From cfe1320e291e8c696f9ae2fdd6bd38f6ff93c225 Mon Sep 17 00:00:00 2001 From: Simon Pasquier Date: Mon, 17 Dec 2018 10:20:37 +0100 Subject: [PATCH] Bump prometheus/client_golang to v0.9.2 Signed-off-by: Simon Pasquier --- go.mod | 10 +- go.sum | 20 +- .../golang_protobuf_extensions/LICENSE | 4 +- .../golang_protobuf_extensions/NOTICE | 1 + .../pbutil/.gitignore | 1 + .../pbutil/Makefile | 7 + .../pbutil/decode.go | 2 +- .../pbutil/encode.go | 4 +- .../prometheus/client_golang/api/client.go | 4 +- .../client_golang/prometheus/collector.go | 73 ++- .../client_golang/prometheus/counter.go | 2 +- .../client_golang/prometheus/desc.go | 12 +- .../client_golang/prometheus/doc.go | 12 +- .../client_golang/prometheus/fnv.go | 13 + .../client_golang/prometheus/gauge.go | 2 +- .../client_golang/prometheus/go_collector.go | 23 +- .../client_golang/prometheus/histogram.go | 157 ++++- .../client_golang/prometheus/http.go | 153 ++--- .../prometheus/internal/metric.go | 85 +++ .../client_golang/prometheus/labels.go | 34 +- .../client_golang/prometheus/metric.go | 70 +- .../prometheus/process_collector.go | 116 +++- .../prometheus/promhttp/delegator.go | 36 +- .../prometheus/promhttp/delegator_1_8.go | 34 +- .../client_golang/prometheus/promhttp/http.go | 106 +-- .../promhttp/instrument_client_1_8.go | 4 +- .../client_golang/prometheus/registry.go | 432 ++++++++----- .../client_golang/prometheus/summary.go | 33 +- .../client_golang/prometheus/timer.go | 11 +- .../client_golang/prometheus/value.go | 16 +- .../client_golang/prometheus/vec.go | 3 + .../client_golang/prometheus/wrap.go | 179 ++++++ .../github.com/prometheus/procfs/.gitignore | 1 + .../github.com/prometheus/procfs/AUTHORS.md | 20 - .../prometheus/procfs/CONTRIBUTING.md | 6 +- .../prometheus/procfs/MAINTAINERS.md | 1 + vendor/github.com/prometheus/procfs/Makefile | 36 +- .../prometheus/procfs/Makefile.common | 223 +++++++ vendor/github.com/prometheus/procfs/README.md | 1 + .../github.com/prometheus/procfs/buddyinfo.go | 95 +++ .../prometheus/procfs/fixtures.ttar | 462 +++++++++++++ vendor/github.com/prometheus/procfs/fs.go | 49 ++ vendor/github.com/prometheus/procfs/go.mod | 1 + .../prometheus/procfs/internal/util/parse.go | 59 ++ .../procfs/internal/util/sysreadfile_linux.go | 45 ++ vendor/github.com/prometheus/procfs/ipvs.go | 69 +- vendor/github.com/prometheus/procfs/mdstat.go | 13 + .../prometheus/procfs/mountstats.go | 606 ++++++++++++++++++ .../github.com/prometheus/procfs/net_dev.go | 216 +++++++ .../github.com/prometheus/procfs/nfs/nfs.go | 263 ++++++++ .../github.com/prometheus/procfs/nfs/parse.go | 317 +++++++++ .../prometheus/procfs/nfs/parse_nfs.go | 67 ++ .../prometheus/procfs/nfs/parse_nfsd.go | 89 +++ vendor/github.com/prometheus/procfs/proc.go | 48 +- .../github.com/prometheus/procfs/proc_io.go | 18 +- .../prometheus/procfs/proc_limits.go | 51 +- .../github.com/prometheus/procfs/proc_ns.go | 68 ++ .../github.com/prometheus/procfs/proc_stat.go | 13 + vendor/github.com/prometheus/procfs/stat.go | 206 +++++- vendor/github.com/prometheus/procfs/ttar | 389 +++++++++++ vendor/github.com/prometheus/procfs/xfrm.go | 187 ++++++ .../github.com/prometheus/procfs/xfs/parse.go | 330 ++++++++++ .../github.com/prometheus/procfs/xfs/xfs.go | 163 +++++ .../x/net/context/ctxhttp/ctxhttp.go | 5 +- .../x/net/context/ctxhttp/ctxhttp_pre17.go | 147 ----- vendor/golang.org/x/net/trace/trace.go | 13 + vendor/golang.org/x/net/trace/trace_go16.go | 21 - vendor/golang.org/x/net/trace/trace_go17.go | 21 - vendor/modules.txt | 12 +- 69 files changed, 5231 insertions(+), 759 deletions(-) create mode 100644 vendor/github.com/matttproud/golang_protobuf_extensions/NOTICE create mode 100644 vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/.gitignore create mode 100644 vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/Makefile create mode 100644 vendor/github.com/prometheus/client_golang/prometheus/internal/metric.go create mode 100644 vendor/github.com/prometheus/client_golang/prometheus/wrap.go create mode 100644 vendor/github.com/prometheus/procfs/.gitignore delete mode 100644 vendor/github.com/prometheus/procfs/AUTHORS.md create mode 100644 vendor/github.com/prometheus/procfs/MAINTAINERS.md create mode 100644 vendor/github.com/prometheus/procfs/Makefile.common create mode 100644 vendor/github.com/prometheus/procfs/buddyinfo.go create mode 100644 vendor/github.com/prometheus/procfs/fixtures.ttar create mode 100644 vendor/github.com/prometheus/procfs/go.mod create mode 100644 vendor/github.com/prometheus/procfs/internal/util/parse.go create mode 100644 vendor/github.com/prometheus/procfs/internal/util/sysreadfile_linux.go create mode 100644 vendor/github.com/prometheus/procfs/mountstats.go create mode 100644 vendor/github.com/prometheus/procfs/net_dev.go create mode 100644 vendor/github.com/prometheus/procfs/nfs/nfs.go create mode 100644 vendor/github.com/prometheus/procfs/nfs/parse.go create mode 100644 vendor/github.com/prometheus/procfs/nfs/parse_nfs.go create mode 100644 vendor/github.com/prometheus/procfs/nfs/parse_nfsd.go create mode 100644 vendor/github.com/prometheus/procfs/proc_ns.go create mode 100644 vendor/github.com/prometheus/procfs/ttar create mode 100644 vendor/github.com/prometheus/procfs/xfrm.go create mode 100644 vendor/github.com/prometheus/procfs/xfs/parse.go create mode 100644 vendor/github.com/prometheus/procfs/xfs/xfs.go delete mode 100644 vendor/golang.org/x/net/context/ctxhttp/ctxhttp_pre17.go delete mode 100644 vendor/golang.org/x/net/trace/trace_go16.go delete mode 100644 vendor/golang.org/x/net/trace/trace_go17.go diff --git a/go.mod b/go.mod index 313e4cd737..c7774afea0 100644 --- a/go.mod +++ b/go.mod @@ -8,7 +8,6 @@ require ( github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf // indirect github.com/armon/go-metrics v0.0.0-20171002182731-9a4b6e10bed6 // indirect github.com/asaskevich/govalidator v0.0.0-20180319081651-7d2e70ef918f // indirect - github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973 // indirect github.com/cenkalti/backoff v0.0.0-20181003080854-62661b46c409 github.com/cespare/xxhash v0.0.0-20181017004759-096ff4a8a059 github.com/circonus-labs/circonus-gometrics v2.2.4+incompatible // indirect @@ -47,7 +46,7 @@ require ( github.com/kr/logfmt v0.0.0-20140226030751-b84e30acd515 // indirect github.com/kylelemons/godebug v0.0.0-20160406211939-eadb3ce320cb github.com/mailru/easyjson v0.0.0-20171022173215-4d347d79dea0 // indirect - github.com/matttproud/golang_protobuf_extensions v0.0.0-20150406173934-fc2b8d3a73c4 + github.com/matttproud/golang_protobuf_extensions v1.0.1 github.com/miekg/dns v0.0.0-20171108100119-388f6eea2949 // indirect github.com/mitchellh/mapstructure v0.0.0-20180220230111-00c29f56e238 // indirect github.com/mwitkow/go-conntrack v0.0.0-20161129095857-cc309e4a2223 // indirect @@ -57,10 +56,8 @@ require ( github.com/pborman/uuid v1.2.0 // indirect github.com/pkg/errors v0.0.0-20170316201538-ff09b135c25a github.com/pmezard/go-difflib v1.0.0 // indirect - github.com/prometheus/client_golang v0.0.0-20180319131721-d49167c4b9f3 - github.com/prometheus/client_model v0.0.0-20180712105110-5c3871d89910 // indirect + github.com/prometheus/client_golang v0.9.2 github.com/prometheus/common v0.0.0-20181126121408-4724e9255275 - github.com/prometheus/procfs v0.0.0-20160411190841-abf152e5f3e9 // indirect github.com/prometheus/prometheus v0.0.0-20180315085919-58e2a31db8de github.com/rs/cors v1.6.0 github.com/satori/go.uuid v0.0.0-20160603004225-b111a074d5ef @@ -70,8 +67,7 @@ require ( github.com/stretchr/testify v0.0.0-20160615092844-d77da356e56a github.com/tv42/httpunix v0.0.0-20150427012821-b75d8614f926 // indirect github.com/xlab/treeprint v0.0.0-20180616005107-d6fb6747feb6 - golang.org/x/net v0.0.0-20180811021610-c39426892332 - golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f // indirect + golang.org/x/net v0.0.0-20181201002055-351d144fa1fc golang.org/x/text v0.3.1-0.20180805044716-cb6730876b98 // indirect golang.org/x/tools v0.0.0-20181120060634-fc4f04983f62 // indirect google.golang.org/appengine v1.3.0 // indirect diff --git a/go.sum b/go.sum index e74f40abdd..a8ab8ea6b6 100644 --- a/go.sum +++ b/go.sum @@ -98,8 +98,8 @@ github.com/kylelemons/godebug v0.0.0-20160406211939-eadb3ce320cb h1:iiMILPl9HQFq github.com/kylelemons/godebug v0.0.0-20160406211939-eadb3ce320cb/go.mod h1:B69LEHPfb2qLo0BaaOLcbitczOKLWTsrBG9LczfCD4k= github.com/mailru/easyjson v0.0.0-20171022173215-4d347d79dea0 h1:K4FvcKW414OihhREUwGuFqsNJYgTrPHEeiXZAgHv3y4= github.com/mailru/easyjson v0.0.0-20171022173215-4d347d79dea0/go.mod h1:C1wdFJiN94OJF2b5HbByQZoLdCWB1Yqtg26g4irojpc= -github.com/matttproud/golang_protobuf_extensions v0.0.0-20150406173934-fc2b8d3a73c4 h1:NlK6WXPDxjVVwseTuj5NdNJBDabnoJryx4UqB5i/Lk8= -github.com/matttproud/golang_protobuf_extensions v0.0.0-20150406173934-fc2b8d3a73c4/go.mod h1:D8He9yQNgCq6Z5Ld7szi9bcBfOoFv/3dc6xSMkL2PC0= +github.com/matttproud/golang_protobuf_extensions v1.0.1 h1:4hp9jkHxhMHkqkrB3Ix0jegS5sx/RkqARlsWZ6pIwiU= +github.com/matttproud/golang_protobuf_extensions v1.0.1/go.mod h1:D8He9yQNgCq6Z5Ld7szi9bcBfOoFv/3dc6xSMkL2PC0= github.com/miekg/dns v0.0.0-20171108100119-388f6eea2949 h1:RlhjhMleI8a6VCGjfKms6O3wWdW9/fDFRcJcbFesWaQ= github.com/miekg/dns v0.0.0-20171108100119-388f6eea2949/go.mod h1:W1PPwlIAgtquWBMBEV9nkV9Cazfe8ScdGz/Lj7v3Nrg= github.com/mitchellh/mapstructure v0.0.0-20180220230111-00c29f56e238 h1:+MZW2uvHgN8kYvksEN3f7eFL2wpzk0GxmlFsMybWc7E= @@ -118,14 +118,14 @@ github.com/pkg/errors v0.0.0-20170316201538-ff09b135c25a h1:wJ8mL5Lj13kTUhKlQitC github.com/pkg/errors v0.0.0-20170316201538-ff09b135c25a/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0= github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM= github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4= -github.com/prometheus/client_golang v0.0.0-20180319131721-d49167c4b9f3 h1:IlkKMWpcBADSCBBkzSukNTFPfhEV+3VyGN4b0Wc2IUA= -github.com/prometheus/client_golang v0.0.0-20180319131721-d49167c4b9f3/go.mod h1:7SWBe2y4D6OKWSNQJUaRYU/AaXPKyh/dDVn+NZz0KFw= +github.com/prometheus/client_golang v0.9.2 h1:awm861/B8OKDd2I/6o1dy3ra4BamzKhYOiGItCeZ740= +github.com/prometheus/client_golang v0.9.2/go.mod h1:OsXs2jCmiKlQ1lTBmv21f2mNfw4xf/QclQDMrYNZzcM= github.com/prometheus/client_model v0.0.0-20180712105110-5c3871d89910 h1:idejC8f05m9MGOsuEi1ATq9shN03HrxNkD/luQvxCv8= github.com/prometheus/client_model v0.0.0-20180712105110-5c3871d89910/go.mod h1:MbSGuTsp3dbXC40dX6PRTWyKYBIrTGTE9sqQNg2J8bo= github.com/prometheus/common v0.0.0-20181126121408-4724e9255275 h1:PnBWHBf+6L0jOqq0gIVUe6Yk0/QMZ640k6NvkxcBf+8= github.com/prometheus/common v0.0.0-20181126121408-4724e9255275/go.mod h1:daVV7qP5qjZbuso7PdcryaAu0sAZbrN9i7WWcTMWvro= -github.com/prometheus/procfs v0.0.0-20160411190841-abf152e5f3e9 h1:IrO4Eb9oGw+GxzOhO4b2QC5EWO85Omh/4iTSPZktMm8= -github.com/prometheus/procfs v0.0.0-20160411190841-abf152e5f3e9/go.mod h1:c3At6R/oaqEKCNdg8wHV1ftS6bRYblBhIjjI8uT2IGk= +github.com/prometheus/procfs v0.0.0-20181204211112-1dc9a6cbc91a h1:9a8MnZMP0X2nLJdBg+pBmGgkJlSaKC2KaQmTCk1XDtE= +github.com/prometheus/procfs v0.0.0-20181204211112-1dc9a6cbc91a/go.mod h1:c3At6R/oaqEKCNdg8wHV1ftS6bRYblBhIjjI8uT2IGk= github.com/prometheus/prometheus v0.0.0-20180315085919-58e2a31db8de h1:sJfXVVHOogtkF5K9F19bV9ATwbyKxrN6Uq0ZHqly4Ts= github.com/prometheus/prometheus v0.0.0-20180315085919-58e2a31db8de/go.mod h1:oAIUtOny2rjMX0OWN5vPR5/q/twIROJvdqnQKDdil/s= github.com/rs/cors v1.6.0 h1:G9tHG9lebljV9mfp9SNPDL36nCDxmo3zTlAf1YgvzmI= @@ -147,10 +147,10 @@ github.com/tv42/httpunix v0.0.0-20150427012821-b75d8614f926/go.mod h1:9ESjWnEqri github.com/xlab/treeprint v0.0.0-20180616005107-d6fb6747feb6 h1:YdYsPAZ2pC6Tow/nPZOPQ96O3hm/ToAkGsPLzedXERk= github.com/xlab/treeprint v0.0.0-20180616005107-d6fb6747feb6/go.mod h1:ce1O1j6UtZfjr22oyGxGLbauSBp2YVXpARAosm7dHBg= golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4= -golang.org/x/net v0.0.0-20180811021610-c39426892332 h1:efGso+ep0DjyCBJPjvoz0HI6UldX4Md2F1rZFe1ir0E= -golang.org/x/net v0.0.0-20180811021610-c39426892332/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4= -golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f h1:wMNYb4v58l5UBM7MYRLPG6ZhfOqbKu7X5eyFl8ZhKvA= -golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= +golang.org/x/net v0.0.0-20181201002055-351d144fa1fc h1:a3CU5tJYVj92DY2LaA1kUkrsqD5/3mLDhx2NcNqyW+0= +golang.org/x/net v0.0.0-20181201002055-351d144fa1fc/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4= +golang.org/x/sync v0.0.0-20181108010431-42b317875d0f h1:Bl/8QSvNqXvPGPGXa2z5xUTmV7VDcZyvRZ+QQXkXTZQ= +golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg= golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ= golang.org/x/text v0.3.1-0.20180805044716-cb6730876b98 h1:Cf5h/jCzhiiL0W8VrlJhOm+8+YYZPMHXcHsruWXnD40= diff --git a/vendor/github.com/matttproud/golang_protobuf_extensions/LICENSE b/vendor/github.com/matttproud/golang_protobuf_extensions/LICENSE index 13f15dfce0..8dada3edaf 100644 --- a/vendor/github.com/matttproud/golang_protobuf_extensions/LICENSE +++ b/vendor/github.com/matttproud/golang_protobuf_extensions/LICENSE @@ -178,7 +178,7 @@ APPENDIX: How to apply the Apache License to your work. To apply the Apache License to your work, attach the following - boilerplate notice, with the fields enclosed by brackets "[]" + boilerplate notice, with the fields enclosed by brackets "{}" replaced with your own identifying information. (Don't include the brackets!) The text should be enclosed in the appropriate comment syntax for the file format. We also recommend that a @@ -186,7 +186,7 @@ same "printed page" as the copyright notice for easier identification within third-party archives. - Copyright 2013 Matt T. Proud + Copyright {yyyy} {name of copyright owner} Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. diff --git a/vendor/github.com/matttproud/golang_protobuf_extensions/NOTICE b/vendor/github.com/matttproud/golang_protobuf_extensions/NOTICE new file mode 100644 index 0000000000..5d8cb5b72e --- /dev/null +++ b/vendor/github.com/matttproud/golang_protobuf_extensions/NOTICE @@ -0,0 +1 @@ +Copyright 2012 Matt T. Proud (matt.proud@gmail.com) diff --git a/vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/.gitignore b/vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/.gitignore new file mode 100644 index 0000000000..e16fb946bb --- /dev/null +++ b/vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/.gitignore @@ -0,0 +1 @@ +cover.dat diff --git a/vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/Makefile b/vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/Makefile new file mode 100644 index 0000000000..81be214370 --- /dev/null +++ b/vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/Makefile @@ -0,0 +1,7 @@ +all: + +cover: + go test -cover -v -coverprofile=cover.dat ./... + go tool cover -func cover.dat + +.PHONY: cover diff --git a/vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/decode.go b/vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/decode.go index 66d9b5458f..258c0636aa 100644 --- a/vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/decode.go +++ b/vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/decode.go @@ -38,7 +38,7 @@ var errInvalidVarint = errors.New("invalid varint32 encountered") func ReadDelimited(r io.Reader, m proto.Message) (n int, err error) { // Per AbstractParser#parsePartialDelimitedFrom with // CodedInputStream#readRawVarint32. - headerBuf := make([]byte, binary.MaxVarintLen32) + var headerBuf [binary.MaxVarintLen32]byte var bytesRead, varIntBytes int var messageLength uint64 for varIntBytes == 0 { // i.e. no varint has been decoded yet. diff --git a/vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/encode.go b/vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/encode.go index 4b76ea9a1d..8fb59ad226 100644 --- a/vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/encode.go +++ b/vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/encode.go @@ -33,8 +33,8 @@ func WriteDelimited(w io.Writer, m proto.Message) (n int, err error) { return 0, err } - buf := make([]byte, binary.MaxVarintLen32) - encodedLength := binary.PutUvarint(buf, uint64(len(buffer))) + var buf [binary.MaxVarintLen32]byte + encodedLength := binary.PutUvarint(buf[:], uint64(len(buffer))) sync, err := w.Write(buf[:encodedLength]) if err != nil { diff --git a/vendor/github.com/prometheus/client_golang/api/client.go b/vendor/github.com/prometheus/client_golang/api/client.go index bf2672466c..09af749caa 100644 --- a/vendor/github.com/prometheus/client_golang/api/client.go +++ b/vendor/github.com/prometheus/client_golang/api/client.go @@ -30,10 +30,10 @@ import ( // DefaultRoundTripper is used if no RoundTripper is set in Config. var DefaultRoundTripper http.RoundTripper = &http.Transport{ Proxy: http.ProxyFromEnvironment, - Dial: (&net.Dialer{ + DialContext: (&net.Dialer{ Timeout: 30 * time.Second, KeepAlive: 30 * time.Second, - }).Dial, + }).DialContext, TLSHandshakeTimeout: 10 * time.Second, } diff --git a/vendor/github.com/prometheus/client_golang/prometheus/collector.go b/vendor/github.com/prometheus/client_golang/prometheus/collector.go index 623d3d83fe..c0d70b2faf 100644 --- a/vendor/github.com/prometheus/client_golang/prometheus/collector.go +++ b/vendor/github.com/prometheus/client_golang/prometheus/collector.go @@ -29,27 +29,72 @@ type Collector interface { // collected by this Collector to the provided channel and returns once // the last descriptor has been sent. The sent descriptors fulfill the // consistency and uniqueness requirements described in the Desc - // documentation. (It is valid if one and the same Collector sends - // duplicate descriptors. Those duplicates are simply ignored. However, - // two different Collectors must not send duplicate descriptors.) This - // method idempotently sends the same descriptors throughout the - // lifetime of the Collector. If a Collector encounters an error while - // executing this method, it must send an invalid descriptor (created - // with NewInvalidDesc) to signal the error to the registry. + // documentation. + // + // It is valid if one and the same Collector sends duplicate + // descriptors. Those duplicates are simply ignored. However, two + // different Collectors must not send duplicate descriptors. + // + // Sending no descriptor at all marks the Collector as “unchecked”, + // i.e. no checks will be performed at registration time, and the + // Collector may yield any Metric it sees fit in its Collect method. + // + // This method idempotently sends the same descriptors throughout the + // lifetime of the Collector. It may be called concurrently and + // therefore must be implemented in a concurrency safe way. + // + // If a Collector encounters an error while executing this method, it + // must send an invalid descriptor (created with NewInvalidDesc) to + // signal the error to the registry. Describe(chan<- *Desc) // Collect is called by the Prometheus registry when collecting // metrics. The implementation sends each collected metric via the // provided channel and returns once the last metric has been sent. The - // descriptor of each sent metric is one of those returned by - // Describe. Returned metrics that share the same descriptor must differ - // in their variable label values. This method may be called - // concurrently and must therefore be implemented in a concurrency safe - // way. Blocking occurs at the expense of total performance of rendering - // all registered metrics. Ideally, Collector implementations support - // concurrent readers. + // descriptor of each sent metric is one of those returned by Describe + // (unless the Collector is unchecked, see above). Returned metrics that + // share the same descriptor must differ in their variable label + // values. + // + // This method may be called concurrently and must therefore be + // implemented in a concurrency safe way. Blocking occurs at the expense + // of total performance of rendering all registered metrics. Ideally, + // Collector implementations support concurrent readers. Collect(chan<- Metric) } +// DescribeByCollect is a helper to implement the Describe method of a custom +// Collector. It collects the metrics from the provided Collector and sends +// their descriptors to the provided channel. +// +// If a Collector collects the same metrics throughout its lifetime, its +// Describe method can simply be implemented as: +// +// func (c customCollector) Describe(ch chan<- *Desc) { +// DescribeByCollect(c, ch) +// } +// +// However, this will not work if the metrics collected change dynamically over +// the lifetime of the Collector in a way that their combined set of descriptors +// changes as well. The shortcut implementation will then violate the contract +// of the Describe method. If a Collector sometimes collects no metrics at all +// (for example vectors like CounterVec, GaugeVec, etc., which only collect +// metrics after a metric with a fully specified label set has been accessed), +// it might even get registered as an unchecked Collecter (cf. the Register +// method of the Registerer interface). Hence, only use this shortcut +// implementation of Describe if you are certain to fulfill the contract. +// +// The Collector example demonstrates a use of DescribeByCollect. +func DescribeByCollect(c Collector, descs chan<- *Desc) { + metrics := make(chan Metric) + go func() { + c.Collect(metrics) + close(metrics) + }() + for m := range metrics { + descs <- m.Desc() + } +} + // selfCollector implements Collector for a single Metric so that the Metric // collects itself. Add it as an anonymous field to a struct that implements // Metric, and call init with the Metric itself as an argument. diff --git a/vendor/github.com/prometheus/client_golang/prometheus/counter.go b/vendor/github.com/prometheus/client_golang/prometheus/counter.go index 765e4550c6..d463e36d3e 100644 --- a/vendor/github.com/prometheus/client_golang/prometheus/counter.go +++ b/vendor/github.com/prometheus/client_golang/prometheus/counter.go @@ -136,7 +136,7 @@ func NewCounterVec(opts CounterOpts, labelNames []string) *CounterVec { return &CounterVec{ metricVec: newMetricVec(desc, func(lvs ...string) Metric { if len(lvs) != len(desc.variableLabels) { - panic(errInconsistentCardinality) + panic(makeInconsistentCardinalityError(desc.fqName, desc.variableLabels, lvs)) } result := &counter{desc: desc, labelPairs: makeLabelPairs(desc, lvs)} result.init(result) // Init self-collection. diff --git a/vendor/github.com/prometheus/client_golang/prometheus/desc.go b/vendor/github.com/prometheus/client_golang/prometheus/desc.go index 4a755b0fa5..1d034f871c 100644 --- a/vendor/github.com/prometheus/client_golang/prometheus/desc.go +++ b/vendor/github.com/prometheus/client_golang/prometheus/desc.go @@ -67,7 +67,7 @@ type Desc struct { // NewDesc allocates and initializes a new Desc. Errors are recorded in the Desc // and will be reported on registration time. variableLabels and constLabels can -// be nil if no such labels should be set. fqName and help must not be empty. +// be nil if no such labels should be set. fqName must not be empty. // // variableLabels only contain the label names. Their label values are variable // and therefore not part of the Desc. (They are managed within the Metric.) @@ -80,10 +80,6 @@ func NewDesc(fqName, help string, variableLabels []string, constLabels Labels) * help: help, variableLabels: variableLabels, } - if help == "" { - d.err = errors.New("empty help string") - return d - } if !model.IsValidMetricName(model.LabelValue(fqName)) { d.err = fmt.Errorf("%q is not a valid metric name", fqName) return d @@ -97,7 +93,7 @@ func NewDesc(fqName, help string, variableLabels []string, constLabels Labels) * // First add only the const label names and sort them... for labelName := range constLabels { if !checkLabelName(labelName) { - d.err = fmt.Errorf("%q is not a valid label name", labelName) + d.err = fmt.Errorf("%q is not a valid label name for metric %q", labelName, fqName) return d } labelNames = append(labelNames, labelName) @@ -119,7 +115,7 @@ func NewDesc(fqName, help string, variableLabels []string, constLabels Labels) * // dimension with a different mix between preset and variable labels. for _, labelName := range variableLabels { if !checkLabelName(labelName) { - d.err = fmt.Errorf("%q is not a valid label name", labelName) + d.err = fmt.Errorf("%q is not a valid label name for metric %q", labelName, fqName) return d } labelNames = append(labelNames, "$"+labelName) @@ -156,7 +152,7 @@ func NewDesc(fqName, help string, variableLabels []string, constLabels Labels) * Value: proto.String(v), }) } - sort.Sort(LabelPairSorter(d.constLabelPairs)) + sort.Sort(labelPairSorter(d.constLabelPairs)) return d } diff --git a/vendor/github.com/prometheus/client_golang/prometheus/doc.go b/vendor/github.com/prometheus/client_golang/prometheus/doc.go index 83c3657d76..5d9525defc 100644 --- a/vendor/github.com/prometheus/client_golang/prometheus/doc.go +++ b/vendor/github.com/prometheus/client_golang/prometheus/doc.go @@ -121,7 +121,17 @@ // NewConstSummary (and their respective Must… versions). That will happen in // the Collect method. The Describe method has to return separate Desc // instances, representative of the “throw-away” metrics to be created later. -// NewDesc comes in handy to create those Desc instances. +// NewDesc comes in handy to create those Desc instances. Alternatively, you +// could return no Desc at all, which will marke the Collector “unchecked”. No +// checks are porformed at registration time, but metric consistency will still +// be ensured at scrape time, i.e. any inconsistencies will lead to scrape +// errors. Thus, with unchecked Collectors, the responsibility to not collect +// metrics that lead to inconsistencies in the total scrape result lies with the +// implementer of the Collector. While this is not a desirable state, it is +// sometimes necessary. The typical use case is a situatios where the exact +// metrics to be returned by a Collector cannot be predicted at registration +// time, but the implementer has sufficient knowledge of the whole system to +// guarantee metric consistency. // // The Collector example illustrates the use case. You can also look at the // source code of the processCollector (mirroring process metrics), the diff --git a/vendor/github.com/prometheus/client_golang/prometheus/fnv.go b/vendor/github.com/prometheus/client_golang/prometheus/fnv.go index e3b67df8ac..3d383a735c 100644 --- a/vendor/github.com/prometheus/client_golang/prometheus/fnv.go +++ b/vendor/github.com/prometheus/client_golang/prometheus/fnv.go @@ -1,3 +1,16 @@ +// Copyright 2018 The Prometheus Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + package prometheus // Inline and byte-free variant of hash/fnv's fnv64a. diff --git a/vendor/github.com/prometheus/client_golang/prometheus/gauge.go b/vendor/github.com/prometheus/client_golang/prometheus/gauge.go index 17c72d7eb0..71d406bd92 100644 --- a/vendor/github.com/prometheus/client_golang/prometheus/gauge.go +++ b/vendor/github.com/prometheus/client_golang/prometheus/gauge.go @@ -147,7 +147,7 @@ func NewGaugeVec(opts GaugeOpts, labelNames []string) *GaugeVec { return &GaugeVec{ metricVec: newMetricVec(desc, func(lvs ...string) Metric { if len(lvs) != len(desc.variableLabels) { - panic(errInconsistentCardinality) + panic(makeInconsistentCardinalityError(desc.fqName, desc.variableLabels, lvs)) } result := &gauge{desc: desc, labelPairs: makeLabelPairs(desc, lvs)} result.init(result) // Init self-collection. diff --git a/vendor/github.com/prometheus/client_golang/prometheus/go_collector.go b/vendor/github.com/prometheus/client_golang/prometheus/go_collector.go index 096454af91..ba3b9333ed 100644 --- a/vendor/github.com/prometheus/client_golang/prometheus/go_collector.go +++ b/vendor/github.com/prometheus/client_golang/prometheus/go_collector.go @@ -1,3 +1,16 @@ +// Copyright 2018 The Prometheus Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + package prometheus import ( @@ -17,8 +30,12 @@ type goCollector struct { metrics memStatsMetrics } -// NewGoCollector returns a collector which exports metrics about the current -// go process. +// NewGoCollector returns a collector which exports metrics about the current Go +// process. This includes memory stats. To collect those, runtime.ReadMemStats +// is called. This causes a stop-the-world, which is very short with Go1.9+ +// (~25µs). However, with older Go versions, the stop-the-world duration depends +// on the heap size and can be quite significant (~1.7 ms/GiB as per +// https://go-review.googlesource.com/c/go/+/34937). func NewGoCollector() Collector { return &goCollector{ goroutinesDesc: NewDesc( @@ -265,7 +282,7 @@ func (c *goCollector) Collect(ch chan<- Metric) { quantiles[float64(idx+1)/float64(len(stats.PauseQuantiles)-1)] = pq.Seconds() } quantiles[0.0] = stats.PauseQuantiles[0].Seconds() - ch <- MustNewConstSummary(c.gcDesc, uint64(stats.NumGC), float64(stats.PauseTotal.Seconds()), quantiles) + ch <- MustNewConstSummary(c.gcDesc, uint64(stats.NumGC), stats.PauseTotal.Seconds(), quantiles) ch <- MustNewConstMetric(c.goInfoDesc, GaugeValue, 1) diff --git a/vendor/github.com/prometheus/client_golang/prometheus/histogram.go b/vendor/github.com/prometheus/client_golang/prometheus/histogram.go index 331783a75c..f88da707bc 100644 --- a/vendor/github.com/prometheus/client_golang/prometheus/histogram.go +++ b/vendor/github.com/prometheus/client_golang/prometheus/histogram.go @@ -16,7 +16,9 @@ package prometheus import ( "fmt" "math" + "runtime" "sort" + "sync" "sync/atomic" "github.com/golang/protobuf/proto" @@ -108,8 +110,9 @@ func ExponentialBuckets(start, factor float64, count int) []float64 { } // HistogramOpts bundles the options for creating a Histogram metric. It is -// mandatory to set Name and Help to a non-empty string. All other fields are -// optional and can safely be left at their zero value. +// mandatory to set Name to a non-empty string. All other fields are optional +// and can safely be left at their zero value, although it is strongly +// encouraged to set a Help string. type HistogramOpts struct { // Namespace, Subsystem, and Name are components of the fully-qualified // name of the Histogram (created by joining these components with @@ -120,7 +123,7 @@ type HistogramOpts struct { Subsystem string Name string - // Help provides information about this Histogram. Mandatory! + // Help provides information about this Histogram. // // Metrics with the same fully-qualified name must have the same Help // string. @@ -162,7 +165,7 @@ func NewHistogram(opts HistogramOpts) Histogram { func newHistogram(desc *Desc, opts HistogramOpts, labelValues ...string) Histogram { if len(desc.variableLabels) != len(labelValues) { - panic(errInconsistentCardinality) + panic(makeInconsistentCardinalityError(desc.fqName, desc.variableLabels, labelValues)) } for _, n := range desc.variableLabels { @@ -184,6 +187,7 @@ func newHistogram(desc *Desc, opts HistogramOpts, labelValues ...string) Histogr desc: desc, upperBounds: opts.Buckets, labelPairs: makeLabelPairs(desc, labelValues), + counts: [2]*histogramCounts{&histogramCounts{}, &histogramCounts{}}, } for i, upperBound := range h.upperBounds { if i < len(h.upperBounds)-1 { @@ -200,28 +204,53 @@ func newHistogram(desc *Desc, opts HistogramOpts, labelValues ...string) Histogr } } } - // Finally we know the final length of h.upperBounds and can make counts. - h.counts = make([]uint64, len(h.upperBounds)) + // Finally we know the final length of h.upperBounds and can make counts + // for both states: + h.counts[0].buckets = make([]uint64, len(h.upperBounds)) + h.counts[1].buckets = make([]uint64, len(h.upperBounds)) h.init(h) // Init self-collection. return h } -type histogram struct { +type histogramCounts struct { // sumBits contains the bits of the float64 representing the sum of all // observations. sumBits and count have to go first in the struct to // guarantee alignment for atomic operations. // http://golang.org/pkg/sync/atomic/#pkg-note-BUG sumBits uint64 count uint64 + buckets []uint64 +} - selfCollector - // Note that there is no mutex required. +type histogram struct { + // countAndHotIdx is a complicated one. For lock-free yet atomic + // observations, we need to save the total count of observations again, + // combined with the index of the currently-hot counts struct, so that + // we can perform the operation on both values atomically. The least + // significant bit defines the hot counts struct. The remaining 63 bits + // represent the total count of observations. This happens under the + // assumption that the 63bit count will never overflow. Rationale: An + // observations takes about 30ns. Let's assume it could happen in + // 10ns. Overflowing the counter will then take at least (2^63)*10ns, + // which is about 3000 years. + // + // This has to be first in the struct for 64bit alignment. See + // http://golang.org/pkg/sync/atomic/#pkg-note-BUG + countAndHotIdx uint64 - desc *Desc + selfCollector + desc *Desc + writeMtx sync.Mutex // Only used in the Write method. upperBounds []float64 - counts []uint64 + + // Two counts, one is "hot" for lock-free observations, the other is + // "cold" for writing out a dto.Metric. It has to be an array of + // pointers to guarantee 64bit alignment of the histogramCounts, see + // http://golang.org/pkg/sync/atomic/#pkg-note-BUG. + counts [2]*histogramCounts + hotIdx int // Index of currently-hot counts. Only used within Write. labelPairs []*dto.LabelPair } @@ -241,36 +270,113 @@ func (h *histogram) Observe(v float64) { // 100 buckets: 78.1 ns/op linear - binary 54.9 ns/op // 300 buckets: 154 ns/op linear - binary 61.6 ns/op i := sort.SearchFloat64s(h.upperBounds, v) - if i < len(h.counts) { - atomic.AddUint64(&h.counts[i], 1) + + // We increment h.countAndHotIdx by 2 so that the counter in the upper + // 63 bits gets incremented by 1. At the same time, we get the new value + // back, which we can use to find the currently-hot counts. + n := atomic.AddUint64(&h.countAndHotIdx, 2) + hotCounts := h.counts[n%2] + + if i < len(h.upperBounds) { + atomic.AddUint64(&hotCounts.buckets[i], 1) } - atomic.AddUint64(&h.count, 1) for { - oldBits := atomic.LoadUint64(&h.sumBits) + oldBits := atomic.LoadUint64(&hotCounts.sumBits) newBits := math.Float64bits(math.Float64frombits(oldBits) + v) - if atomic.CompareAndSwapUint64(&h.sumBits, oldBits, newBits) { + if atomic.CompareAndSwapUint64(&hotCounts.sumBits, oldBits, newBits) { break } } + // Increment count last as we take it as a signal that the observation + // is complete. + atomic.AddUint64(&hotCounts.count, 1) } func (h *histogram) Write(out *dto.Metric) error { - his := &dto.Histogram{} - buckets := make([]*dto.Bucket, len(h.upperBounds)) + var ( + his = &dto.Histogram{} + buckets = make([]*dto.Bucket, len(h.upperBounds)) + hotCounts, coldCounts *histogramCounts + count uint64 + ) - his.SampleSum = proto.Float64(math.Float64frombits(atomic.LoadUint64(&h.sumBits))) - his.SampleCount = proto.Uint64(atomic.LoadUint64(&h.count)) - var count uint64 + // For simplicity, we mutex the rest of this method. It is not in the + // hot path, i.e. Observe is called much more often than Write. The + // complication of making Write lock-free isn't worth it. + h.writeMtx.Lock() + defer h.writeMtx.Unlock() + + // This is a bit arcane, which is why the following spells out this if + // clause in English: + // + // If the currently-hot counts struct is #0, we atomically increment + // h.countAndHotIdx by 1 so that from now on Observe will use the counts + // struct #1. Furthermore, the atomic increment gives us the new value, + // which, in its most significant 63 bits, tells us the count of + // observations done so far up to and including currently ongoing + // observations still using the counts struct just changed from hot to + // cold. To have a normal uint64 for the count, we bitshift by 1 and + // save the result in count. We also set h.hotIdx to 1 for the next + // Write call, and we will refer to counts #1 as hotCounts and to counts + // #0 as coldCounts. + // + // If the currently-hot counts struct is #1, we do the corresponding + // things the other way round. We have to _decrement_ h.countAndHotIdx + // (which is a bit arcane in itself, as we have to express -1 with an + // unsigned int...). + if h.hotIdx == 0 { + count = atomic.AddUint64(&h.countAndHotIdx, 1) >> 1 + h.hotIdx = 1 + hotCounts = h.counts[1] + coldCounts = h.counts[0] + } else { + count = atomic.AddUint64(&h.countAndHotIdx, ^uint64(0)) >> 1 // Decrement. + h.hotIdx = 0 + hotCounts = h.counts[0] + coldCounts = h.counts[1] + } + + // Now we have to wait for the now-declared-cold counts to actually cool + // down, i.e. wait for all observations still using it to finish. That's + // the case once the count in the cold counts struct is the same as the + // one atomically retrieved from the upper 63bits of h.countAndHotIdx. + for { + if count == atomic.LoadUint64(&coldCounts.count) { + break + } + runtime.Gosched() // Let observations get work done. + } + + his.SampleCount = proto.Uint64(count) + his.SampleSum = proto.Float64(math.Float64frombits(atomic.LoadUint64(&coldCounts.sumBits))) + var cumCount uint64 for i, upperBound := range h.upperBounds { - count += atomic.LoadUint64(&h.counts[i]) + cumCount += atomic.LoadUint64(&coldCounts.buckets[i]) buckets[i] = &dto.Bucket{ - CumulativeCount: proto.Uint64(count), + CumulativeCount: proto.Uint64(cumCount), UpperBound: proto.Float64(upperBound), } } + his.Bucket = buckets out.Histogram = his out.Label = h.labelPairs + + // Finally add all the cold counts to the new hot counts and reset the cold counts. + atomic.AddUint64(&hotCounts.count, count) + atomic.StoreUint64(&coldCounts.count, 0) + for { + oldBits := atomic.LoadUint64(&hotCounts.sumBits) + newBits := math.Float64bits(math.Float64frombits(oldBits) + his.GetSampleSum()) + if atomic.CompareAndSwapUint64(&hotCounts.sumBits, oldBits, newBits) { + atomic.StoreUint64(&coldCounts.sumBits, 0) + break + } + } + for i := range h.upperBounds { + atomic.AddUint64(&hotCounts.buckets[i], atomic.LoadUint64(&coldCounts.buckets[i])) + atomic.StoreUint64(&coldCounts.buckets[i], 0) + } return nil } @@ -454,7 +560,7 @@ func (h *constHistogram) Write(out *dto.Metric) error { // bucket. // // NewConstHistogram returns an error if the length of labelValues is not -// consistent with the variable labels in Desc. +// consistent with the variable labels in Desc or if Desc is invalid. func NewConstHistogram( desc *Desc, count uint64, @@ -462,6 +568,9 @@ func NewConstHistogram( buckets map[float64]uint64, labelValues ...string, ) (Metric, error) { + if desc.err != nil { + return nil, desc.err + } if err := validateLabelValues(labelValues, len(desc.variableLabels)); err != nil { return nil, err } diff --git a/vendor/github.com/prometheus/client_golang/prometheus/http.go b/vendor/github.com/prometheus/client_golang/prometheus/http.go index dd0f8197f9..9f0875bfc8 100644 --- a/vendor/github.com/prometheus/client_golang/prometheus/http.go +++ b/vendor/github.com/prometheus/client_golang/prometheus/http.go @@ -15,9 +15,7 @@ package prometheus import ( "bufio" - "bytes" "compress/gzip" - "fmt" "io" "net" "net/http" @@ -41,19 +39,10 @@ const ( acceptEncodingHeader = "Accept-Encoding" ) -var bufPool sync.Pool - -func getBuf() *bytes.Buffer { - buf := bufPool.Get() - if buf == nil { - return &bytes.Buffer{} - } - return buf.(*bytes.Buffer) -} - -func giveBuf(buf *bytes.Buffer) { - buf.Reset() - bufPool.Put(buf) +var gzipPool = sync.Pool{ + New: func() interface{} { + return gzip.NewWriter(nil) + }, } // Handler returns an HTTP handler for the DefaultGatherer. It is @@ -61,68 +50,50 @@ func giveBuf(buf *bytes.Buffer) { // name). // // Deprecated: Please note the issues described in the doc comment of -// InstrumentHandler. You might want to consider using -// promhttp.InstrumentedHandler instead. +// InstrumentHandler. You might want to consider using promhttp.Handler instead. func Handler() http.Handler { return InstrumentHandler("prometheus", UninstrumentedHandler()) } // UninstrumentedHandler returns an HTTP handler for the DefaultGatherer. // -// Deprecated: Use promhttp.Handler instead. See there for further documentation. +// Deprecated: Use promhttp.HandlerFor(DefaultGatherer, promhttp.HandlerOpts{}) +// instead. See there for further documentation. func UninstrumentedHandler() http.Handler { - return http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) { + return http.HandlerFunc(func(rsp http.ResponseWriter, req *http.Request) { mfs, err := DefaultGatherer.Gather() if err != nil { - http.Error(w, "An error has occurred during metrics collection:\n\n"+err.Error(), http.StatusInternalServerError) + httpError(rsp, err) return } contentType := expfmt.Negotiate(req.Header) - buf := getBuf() - defer giveBuf(buf) - writer, encoding := decorateWriter(req, buf) - enc := expfmt.NewEncoder(writer, contentType) - var lastErr error + header := rsp.Header() + header.Set(contentTypeHeader, string(contentType)) + + w := io.Writer(rsp) + if gzipAccepted(req.Header) { + header.Set(contentEncodingHeader, "gzip") + gz := gzipPool.Get().(*gzip.Writer) + defer gzipPool.Put(gz) + + gz.Reset(w) + defer gz.Close() + + w = gz + } + + enc := expfmt.NewEncoder(w, contentType) + for _, mf := range mfs { if err := enc.Encode(mf); err != nil { - lastErr = err - http.Error(w, "An error has occurred during metrics encoding:\n\n"+err.Error(), http.StatusInternalServerError) + httpError(rsp, err) return } } - if closer, ok := writer.(io.Closer); ok { - closer.Close() - } - if lastErr != nil && buf.Len() == 0 { - http.Error(w, "No metrics encoded, last error:\n\n"+lastErr.Error(), http.StatusInternalServerError) - return - } - header := w.Header() - header.Set(contentTypeHeader, string(contentType)) - header.Set(contentLengthHeader, fmt.Sprint(buf.Len())) - if encoding != "" { - header.Set(contentEncodingHeader, encoding) - } - w.Write(buf.Bytes()) }) } -// decorateWriter wraps a writer to handle gzip compression if requested. It -// returns the decorated writer and the appropriate "Content-Encoding" header -// (which is empty if no compression is enabled). -func decorateWriter(request *http.Request, writer io.Writer) (io.Writer, string) { - header := request.Header.Get(acceptEncodingHeader) - parts := strings.Split(header, ",") - for _, part := range parts { - part := strings.TrimSpace(part) - if part == "gzip" || strings.HasPrefix(part, "gzip;") { - return gzip.NewWriter(writer), "gzip" - } - } - return writer, "" -} - var instLabels = []string{"method", "code"} type nower interface { @@ -139,16 +110,6 @@ var now nower = nowFunc(func() time.Time { return time.Now() }) -func nowSeries(t ...time.Time) nower { - return nowFunc(func() time.Time { - defer func() { - t = t[1:] - }() - - return t[0] - }) -} - // InstrumentHandler wraps the given HTTP handler for instrumentation. It // registers four metric collectors (if not already done) and reports HTTP // metrics to the (newly or already) registered collectors: http_requests_total @@ -159,21 +120,14 @@ func nowSeries(t ...time.Time) nower { // (label name "method") and HTTP status code (label name "code"). // // Deprecated: InstrumentHandler has several issues. Use the tooling provided in -// package promhttp instead. The issues are the following: -// -// - It uses Summaries rather than Histograms. Summaries are not useful if -// aggregation across multiple instances is required. -// -// - It uses microseconds as unit, which is deprecated and should be replaced by -// seconds. -// -// - The size of the request is calculated in a separate goroutine. Since this -// calculator requires access to the request header, it creates a race with -// any writes to the header performed during request handling. -// httputil.ReverseProxy is a prominent example for a handler -// performing such writes. -// -// - It has additional issues with HTTP/2, cf. +// package promhttp instead. The issues are the following: (1) It uses Summaries +// rather than Histograms. Summaries are not useful if aggregation across +// multiple instances is required. (2) It uses microseconds as unit, which is +// deprecated and should be replaced by seconds. (3) The size of the request is +// calculated in a separate goroutine. Since this calculator requires access to +// the request header, it creates a race with any writes to the header performed +// during request handling. httputil.ReverseProxy is a prominent example for a +// handler performing such writes. (4) It has additional issues with HTTP/2, cf. // https://github.com/prometheus/client_golang/issues/272. func InstrumentHandler(handlerName string, handler http.Handler) http.HandlerFunc { return InstrumentHandlerFunc(handlerName, handler.ServeHTTP) @@ -317,7 +271,7 @@ func InstrumentHandlerFuncWithOpts(opts SummaryOpts, handlerFunc func(http.Respo } func computeApproximateRequestSize(r *http.Request) <-chan int { - // Get URL length in current go routine for avoiding a race condition. + // Get URL length in current goroutine for avoiding a race condition. // HandlerFunc that runs in parallel may modify the URL. s := 0 if r.URL != nil { @@ -352,10 +306,9 @@ func computeApproximateRequestSize(r *http.Request) <-chan int { type responseWriterDelegator struct { http.ResponseWriter - handler, method string - status int - written int64 - wroteHeader bool + status int + written int64 + wroteHeader bool } func (r *responseWriterDelegator) WriteHeader(code int) { @@ -521,3 +474,31 @@ func sanitizeCode(s int) string { return strconv.Itoa(s) } } + +// gzipAccepted returns whether the client will accept gzip-encoded content. +func gzipAccepted(header http.Header) bool { + a := header.Get(acceptEncodingHeader) + parts := strings.Split(a, ",") + for _, part := range parts { + part = strings.TrimSpace(part) + if part == "gzip" || strings.HasPrefix(part, "gzip;") { + return true + } + } + return false +} + +// httpError removes any content-encoding header and then calls http.Error with +// the provided error and http.StatusInternalServerErrer. Error contents is +// supposed to be uncompressed plain text. However, same as with a plain +// http.Error, any header settings will be void if the header has already been +// sent. The error message will still be written to the writer, but it will +// probably be of limited use. +func httpError(rsp http.ResponseWriter, err error) { + rsp.Header().Del(contentEncodingHeader) + http.Error( + rsp, + "An error has occurred while serving metrics:\n\n"+err.Error(), + http.StatusInternalServerError, + ) +} diff --git a/vendor/github.com/prometheus/client_golang/prometheus/internal/metric.go b/vendor/github.com/prometheus/client_golang/prometheus/internal/metric.go new file mode 100644 index 0000000000..351c26e1ae --- /dev/null +++ b/vendor/github.com/prometheus/client_golang/prometheus/internal/metric.go @@ -0,0 +1,85 @@ +// Copyright 2018 The Prometheus Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package internal + +import ( + "sort" + + dto "github.com/prometheus/client_model/go" +) + +// metricSorter is a sortable slice of *dto.Metric. +type metricSorter []*dto.Metric + +func (s metricSorter) Len() int { + return len(s) +} + +func (s metricSorter) Swap(i, j int) { + s[i], s[j] = s[j], s[i] +} + +func (s metricSorter) Less(i, j int) bool { + if len(s[i].Label) != len(s[j].Label) { + // This should not happen. The metrics are + // inconsistent. However, we have to deal with the fact, as + // people might use custom collectors or metric family injection + // to create inconsistent metrics. So let's simply compare the + // number of labels in this case. That will still yield + // reproducible sorting. + return len(s[i].Label) < len(s[j].Label) + } + for n, lp := range s[i].Label { + vi := lp.GetValue() + vj := s[j].Label[n].GetValue() + if vi != vj { + return vi < vj + } + } + + // We should never arrive here. Multiple metrics with the same + // label set in the same scrape will lead to undefined ingestion + // behavior. However, as above, we have to provide stable sorting + // here, even for inconsistent metrics. So sort equal metrics + // by their timestamp, with missing timestamps (implying "now") + // coming last. + if s[i].TimestampMs == nil { + return false + } + if s[j].TimestampMs == nil { + return true + } + return s[i].GetTimestampMs() < s[j].GetTimestampMs() +} + +// NormalizeMetricFamilies returns a MetricFamily slice with empty +// MetricFamilies pruned and the remaining MetricFamilies sorted by name within +// the slice, with the contained Metrics sorted within each MetricFamily. +func NormalizeMetricFamilies(metricFamiliesByName map[string]*dto.MetricFamily) []*dto.MetricFamily { + for _, mf := range metricFamiliesByName { + sort.Sort(metricSorter(mf.Metric)) + } + names := make([]string, 0, len(metricFamiliesByName)) + for name, mf := range metricFamiliesByName { + if len(mf.Metric) > 0 { + names = append(names, name) + } + } + sort.Strings(names) + result := make([]*dto.MetricFamily, 0, len(names)) + for _, name := range names { + result = append(result, metricFamiliesByName[name]) + } + return result +} diff --git a/vendor/github.com/prometheus/client_golang/prometheus/labels.go b/vendor/github.com/prometheus/client_golang/prometheus/labels.go index 2502e37348..2744443ac2 100644 --- a/vendor/github.com/prometheus/client_golang/prometheus/labels.go +++ b/vendor/github.com/prometheus/client_golang/prometheus/labels.go @@ -1,3 +1,16 @@ +// Copyright 2018 The Prometheus Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + package prometheus import ( @@ -24,9 +37,22 @@ const reservedLabelPrefix = "__" var errInconsistentCardinality = errors.New("inconsistent label cardinality") +func makeInconsistentCardinalityError(fqName string, labels, labelValues []string) error { + return fmt.Errorf( + "%s: %q has %d variable labels named %q but %d values %q were provided", + errInconsistentCardinality, fqName, + len(labels), labels, + len(labelValues), labelValues, + ) +} + func validateValuesInLabels(labels Labels, expectedNumberOfValues int) error { if len(labels) != expectedNumberOfValues { - return errInconsistentCardinality + return fmt.Errorf( + "%s: expected %d label values but got %d in %#v", + errInconsistentCardinality, expectedNumberOfValues, + len(labels), labels, + ) } for name, val := range labels { @@ -40,7 +66,11 @@ func validateValuesInLabels(labels Labels, expectedNumberOfValues int) error { func validateLabelValues(vals []string, expectedNumberOfValues int) error { if len(vals) != expectedNumberOfValues { - return errInconsistentCardinality + return fmt.Errorf( + "%s: expected %d label values but got %d in %#v", + errInconsistentCardinality, expectedNumberOfValues, + len(vals), vals, + ) } for _, val := range vals { diff --git a/vendor/github.com/prometheus/client_golang/prometheus/metric.go b/vendor/github.com/prometheus/client_golang/prometheus/metric.go index 6213ee8127..55e6d86d59 100644 --- a/vendor/github.com/prometheus/client_golang/prometheus/metric.go +++ b/vendor/github.com/prometheus/client_golang/prometheus/metric.go @@ -15,6 +15,9 @@ package prometheus import ( "strings" + "time" + + "github.com/golang/protobuf/proto" dto "github.com/prometheus/client_model/go" ) @@ -43,9 +46,8 @@ type Metric interface { // While populating dto.Metric, it is the responsibility of the // implementation to ensure validity of the Metric protobuf (like valid // UTF-8 strings or syntactically valid metric and label names). It is - // recommended to sort labels lexicographically. (Implementers may find - // LabelPairSorter useful for that.) Callers of Write should still make - // sure of sorting if they depend on it. + // recommended to sort labels lexicographically. Callers of Write should + // still make sure of sorting if they depend on it. Write(*dto.Metric) error // TODO(beorn7): The original rationale of passing in a pre-allocated // dto.Metric protobuf to save allocations has disappeared. The @@ -57,8 +59,9 @@ type Metric interface { // implementation XXX has its own XXXOpts type, but in most cases, it is just be // an alias of this type (which might change when the requirement arises.) // -// It is mandatory to set Name and Help to a non-empty string. All other fields -// are optional and can safely be left at their zero value. +// It is mandatory to set Name to a non-empty string. All other fields are +// optional and can safely be left at their zero value, although it is strongly +// encouraged to set a Help string. type Opts struct { // Namespace, Subsystem, and Name are components of the fully-qualified // name of the Metric (created by joining these components with @@ -69,7 +72,7 @@ type Opts struct { Subsystem string Name string - // Help provides information about this metric. Mandatory! + // Help provides information about this metric. // // Metrics with the same fully-qualified name must have the same Help // string. @@ -110,37 +113,22 @@ func BuildFQName(namespace, subsystem, name string) string { return name } -// LabelPairSorter implements sort.Interface. It is used to sort a slice of -// dto.LabelPair pointers. This is useful for implementing the Write method of -// custom metrics. -type LabelPairSorter []*dto.LabelPair +// labelPairSorter implements sort.Interface. It is used to sort a slice of +// dto.LabelPair pointers. +type labelPairSorter []*dto.LabelPair -func (s LabelPairSorter) Len() int { +func (s labelPairSorter) Len() int { return len(s) } -func (s LabelPairSorter) Swap(i, j int) { +func (s labelPairSorter) Swap(i, j int) { s[i], s[j] = s[j], s[i] } -func (s LabelPairSorter) Less(i, j int) bool { +func (s labelPairSorter) Less(i, j int) bool { return s[i].GetName() < s[j].GetName() } -type hashSorter []uint64 - -func (s hashSorter) Len() int { - return len(s) -} - -func (s hashSorter) Swap(i, j int) { - s[i], s[j] = s[j], s[i] -} - -func (s hashSorter) Less(i, j int) bool { - return s[i] < s[j] -} - type invalidMetric struct { desc *Desc err error @@ -156,3 +144,31 @@ func NewInvalidMetric(desc *Desc, err error) Metric { func (m *invalidMetric) Desc() *Desc { return m.desc } func (m *invalidMetric) Write(*dto.Metric) error { return m.err } + +type timestampedMetric struct { + Metric + t time.Time +} + +func (m timestampedMetric) Write(pb *dto.Metric) error { + e := m.Metric.Write(pb) + pb.TimestampMs = proto.Int64(m.t.Unix()*1000 + int64(m.t.Nanosecond()/1000000)) + return e +} + +// NewMetricWithTimestamp returns a new Metric wrapping the provided Metric in a +// way that it has an explicit timestamp set to the provided Time. This is only +// useful in rare cases as the timestamp of a Prometheus metric should usually +// be set by the Prometheus server during scraping. Exceptions include mirroring +// metrics with given timestamps from other metric +// sources. +// +// NewMetricWithTimestamp works best with MustNewConstMetric, +// MustNewConstHistogram, and MustNewConstSummary, see example. +// +// Currently, the exposition formats used by Prometheus are limited to +// millisecond resolution. Thus, the provided time will be rounded down to the +// next full millisecond value. +func NewMetricWithTimestamp(t time.Time, m Metric) Metric { + return timestampedMetric{Metric: m, t: t} +} diff --git a/vendor/github.com/prometheus/client_golang/prometheus/process_collector.go b/vendor/github.com/prometheus/client_golang/prometheus/process_collector.go index 32ac74a7f7..55176d58ce 100644 --- a/vendor/github.com/prometheus/client_golang/prometheus/process_collector.go +++ b/vendor/github.com/prometheus/client_golang/prometheus/process_collector.go @@ -13,46 +13,74 @@ package prometheus -import "github.com/prometheus/procfs" +import ( + "errors" + "os" + + "github.com/prometheus/procfs" +) type processCollector struct { - pid int collectFn func(chan<- Metric) pidFn func() (int, error) + reportErrors bool cpuTotal *Desc openFDs, maxFDs *Desc - vsize, rss *Desc + vsize, maxVsize *Desc + rss *Desc startTime *Desc } +// ProcessCollectorOpts defines the behavior of a process metrics collector +// created with NewProcessCollector. +type ProcessCollectorOpts struct { + // PidFn returns the PID of the process the collector collects metrics + // for. It is called upon each collection. By default, the PID of the + // current process is used, as determined on construction time by + // calling os.Getpid(). + PidFn func() (int, error) + // If non-empty, each of the collected metrics is prefixed by the + // provided string and an underscore ("_"). + Namespace string + // If true, any error encountered during collection is reported as an + // invalid metric (see NewInvalidMetric). Otherwise, errors are ignored + // and the collected metrics will be incomplete. (Possibly, no metrics + // will be collected at all.) While that's usually not desired, it is + // appropriate for the common "mix-in" of process metrics, where process + // metrics are nice to have, but failing to collect them should not + // disrupt the collection of the remaining metrics. + ReportErrors bool +} + // NewProcessCollector returns a collector which exports the current state of // process metrics including CPU, memory and file descriptor usage as well as -// the process start time for the given process ID under the given namespace. +// the process start time. The detailed behavior is defined by the provided +// ProcessCollectorOpts. The zero value of ProcessCollectorOpts creates a +// collector for the current process with an empty namespace string and no error +// reporting. // // Currently, the collector depends on a Linux-style proc filesystem and // therefore only exports metrics for Linux. -func NewProcessCollector(pid int, namespace string) Collector { - return NewProcessCollectorPIDFn( - func() (int, error) { return pid, nil }, - namespace, - ) -} - -// NewProcessCollectorPIDFn works like NewProcessCollector but the process ID is -// determined on each collect anew by calling the given pidFn function. -func NewProcessCollectorPIDFn( - pidFn func() (int, error), - namespace string, -) Collector { +// +// Note: An older version of this function had the following signature: +// +// NewProcessCollector(pid int, namespace string) Collector +// +// Most commonly, it was called as +// +// NewProcessCollector(os.Getpid(), "") +// +// The following call of the current version is equivalent to the above: +// +// NewProcessCollector(ProcessCollectorOpts{}) +func NewProcessCollector(opts ProcessCollectorOpts) Collector { ns := "" - if len(namespace) > 0 { - ns = namespace + "_" + if len(opts.Namespace) > 0 { + ns = opts.Namespace + "_" } - c := processCollector{ - pidFn: pidFn, - collectFn: func(chan<- Metric) {}, - + c := &processCollector{ + reportErrors: opts.ReportErrors, cpuTotal: NewDesc( ns+"process_cpu_seconds_total", "Total user and system CPU time spent in seconds.", @@ -73,6 +101,11 @@ func NewProcessCollectorPIDFn( "Virtual memory size in bytes.", nil, nil, ), + maxVsize: NewDesc( + ns+"process_virtual_memory_max_bytes", + "Maximum amount of virtual memory available in bytes.", + nil, nil, + ), rss: NewDesc( ns+"process_resident_memory_bytes", "Resident memory size in bytes.", @@ -85,12 +118,23 @@ func NewProcessCollectorPIDFn( ), } + if opts.PidFn == nil { + pid := os.Getpid() + c.pidFn = func() (int, error) { return pid, nil } + } else { + c.pidFn = opts.PidFn + } + // Set up process metric collection if supported by the runtime. if _, err := procfs.NewStat(); err == nil { c.collectFn = c.processCollect + } else { + c.collectFn = func(ch chan<- Metric) { + c.reportError(ch, nil, errors.New("process metrics not supported on this platform")) + } } - return &c + return c } // Describe returns all descriptions of the collector. @@ -99,6 +143,7 @@ func (c *processCollector) Describe(ch chan<- *Desc) { ch <- c.openFDs ch <- c.maxFDs ch <- c.vsize + ch <- c.maxVsize ch <- c.rss ch <- c.startTime } @@ -108,16 +153,16 @@ func (c *processCollector) Collect(ch chan<- Metric) { c.collectFn(ch) } -// TODO(ts): Bring back error reporting by reverting 7faf9e7 as soon as the -// client allows users to configure the error behavior. func (c *processCollector) processCollect(ch chan<- Metric) { pid, err := c.pidFn() if err != nil { + c.reportError(ch, nil, err) return } p, err := procfs.NewProc(pid) if err != nil { + c.reportError(ch, nil, err) return } @@ -127,14 +172,33 @@ func (c *processCollector) processCollect(ch chan<- Metric) { ch <- MustNewConstMetric(c.rss, GaugeValue, float64(stat.ResidentMemory())) if startTime, err := stat.StartTime(); err == nil { ch <- MustNewConstMetric(c.startTime, GaugeValue, startTime) + } else { + c.reportError(ch, c.startTime, err) } + } else { + c.reportError(ch, nil, err) } if fds, err := p.FileDescriptorsLen(); err == nil { ch <- MustNewConstMetric(c.openFDs, GaugeValue, float64(fds)) + } else { + c.reportError(ch, c.openFDs, err) } if limits, err := p.NewLimits(); err == nil { ch <- MustNewConstMetric(c.maxFDs, GaugeValue, float64(limits.OpenFiles)) + ch <- MustNewConstMetric(c.maxVsize, GaugeValue, float64(limits.AddressSpace)) + } else { + c.reportError(ch, nil, err) + } +} + +func (c *processCollector) reportError(ch chan<- Metric, desc *Desc, err error) { + if !c.reportErrors { + return + } + if desc == nil { + desc = NewInvalidDesc(err) } + ch <- NewInvalidMetric(desc, err) } diff --git a/vendor/github.com/prometheus/client_golang/prometheus/promhttp/delegator.go b/vendor/github.com/prometheus/client_golang/prometheus/promhttp/delegator.go index 9c1c66dcc7..67b56d37cf 100644 --- a/vendor/github.com/prometheus/client_golang/prometheus/promhttp/delegator.go +++ b/vendor/github.com/prometheus/client_golang/prometheus/promhttp/delegator.go @@ -76,16 +76,16 @@ type flusherDelegator struct{ *responseWriterDelegator } type hijackerDelegator struct{ *responseWriterDelegator } type readerFromDelegator struct{ *responseWriterDelegator } -func (d *closeNotifierDelegator) CloseNotify() <-chan bool { +func (d closeNotifierDelegator) CloseNotify() <-chan bool { return d.ResponseWriter.(http.CloseNotifier).CloseNotify() } -func (d *flusherDelegator) Flush() { +func (d flusherDelegator) Flush() { d.ResponseWriter.(http.Flusher).Flush() } -func (d *hijackerDelegator) Hijack() (net.Conn, *bufio.ReadWriter, error) { +func (d hijackerDelegator) Hijack() (net.Conn, *bufio.ReadWriter, error) { return d.ResponseWriter.(http.Hijacker).Hijack() } -func (d *readerFromDelegator) ReadFrom(re io.Reader) (int64, error) { +func (d readerFromDelegator) ReadFrom(re io.Reader) (int64, error) { if !d.wroteHeader { d.WriteHeader(http.StatusOK) } @@ -102,34 +102,34 @@ func init() { return d } pickDelegator[closeNotifier] = func(d *responseWriterDelegator) delegator { // 1 - return &closeNotifierDelegator{d} + return closeNotifierDelegator{d} } pickDelegator[flusher] = func(d *responseWriterDelegator) delegator { // 2 - return &flusherDelegator{d} + return flusherDelegator{d} } pickDelegator[flusher+closeNotifier] = func(d *responseWriterDelegator) delegator { // 3 return struct { *responseWriterDelegator http.Flusher http.CloseNotifier - }{d, &flusherDelegator{d}, &closeNotifierDelegator{d}} + }{d, flusherDelegator{d}, closeNotifierDelegator{d}} } pickDelegator[hijacker] = func(d *responseWriterDelegator) delegator { // 4 - return &hijackerDelegator{d} + return hijackerDelegator{d} } pickDelegator[hijacker+closeNotifier] = func(d *responseWriterDelegator) delegator { // 5 return struct { *responseWriterDelegator http.Hijacker http.CloseNotifier - }{d, &hijackerDelegator{d}, &closeNotifierDelegator{d}} + }{d, hijackerDelegator{d}, closeNotifierDelegator{d}} } pickDelegator[hijacker+flusher] = func(d *responseWriterDelegator) delegator { // 6 return struct { *responseWriterDelegator http.Hijacker http.Flusher - }{d, &hijackerDelegator{d}, &flusherDelegator{d}} + }{d, hijackerDelegator{d}, flusherDelegator{d}} } pickDelegator[hijacker+flusher+closeNotifier] = func(d *responseWriterDelegator) delegator { // 7 return struct { @@ -137,7 +137,7 @@ func init() { http.Hijacker http.Flusher http.CloseNotifier - }{d, &hijackerDelegator{d}, &flusherDelegator{d}, &closeNotifierDelegator{d}} + }{d, hijackerDelegator{d}, flusherDelegator{d}, closeNotifierDelegator{d}} } pickDelegator[readerFrom] = func(d *responseWriterDelegator) delegator { // 8 return readerFromDelegator{d} @@ -147,14 +147,14 @@ func init() { *responseWriterDelegator io.ReaderFrom http.CloseNotifier - }{d, &readerFromDelegator{d}, &closeNotifierDelegator{d}} + }{d, readerFromDelegator{d}, closeNotifierDelegator{d}} } pickDelegator[readerFrom+flusher] = func(d *responseWriterDelegator) delegator { // 10 return struct { *responseWriterDelegator io.ReaderFrom http.Flusher - }{d, &readerFromDelegator{d}, &flusherDelegator{d}} + }{d, readerFromDelegator{d}, flusherDelegator{d}} } pickDelegator[readerFrom+flusher+closeNotifier] = func(d *responseWriterDelegator) delegator { // 11 return struct { @@ -162,14 +162,14 @@ func init() { io.ReaderFrom http.Flusher http.CloseNotifier - }{d, &readerFromDelegator{d}, &flusherDelegator{d}, &closeNotifierDelegator{d}} + }{d, readerFromDelegator{d}, flusherDelegator{d}, closeNotifierDelegator{d}} } pickDelegator[readerFrom+hijacker] = func(d *responseWriterDelegator) delegator { // 12 return struct { *responseWriterDelegator io.ReaderFrom http.Hijacker - }{d, &readerFromDelegator{d}, &hijackerDelegator{d}} + }{d, readerFromDelegator{d}, hijackerDelegator{d}} } pickDelegator[readerFrom+hijacker+closeNotifier] = func(d *responseWriterDelegator) delegator { // 13 return struct { @@ -177,7 +177,7 @@ func init() { io.ReaderFrom http.Hijacker http.CloseNotifier - }{d, &readerFromDelegator{d}, &hijackerDelegator{d}, &closeNotifierDelegator{d}} + }{d, readerFromDelegator{d}, hijackerDelegator{d}, closeNotifierDelegator{d}} } pickDelegator[readerFrom+hijacker+flusher] = func(d *responseWriterDelegator) delegator { // 14 return struct { @@ -185,7 +185,7 @@ func init() { io.ReaderFrom http.Hijacker http.Flusher - }{d, &readerFromDelegator{d}, &hijackerDelegator{d}, &flusherDelegator{d}} + }{d, readerFromDelegator{d}, hijackerDelegator{d}, flusherDelegator{d}} } pickDelegator[readerFrom+hijacker+flusher+closeNotifier] = func(d *responseWriterDelegator) delegator { // 15 return struct { @@ -194,6 +194,6 @@ func init() { http.Hijacker http.Flusher http.CloseNotifier - }{d, &readerFromDelegator{d}, &hijackerDelegator{d}, &flusherDelegator{d}, &closeNotifierDelegator{d}} + }{d, readerFromDelegator{d}, hijackerDelegator{d}, flusherDelegator{d}, closeNotifierDelegator{d}} } } diff --git a/vendor/github.com/prometheus/client_golang/prometheus/promhttp/delegator_1_8.go b/vendor/github.com/prometheus/client_golang/prometheus/promhttp/delegator_1_8.go index 75a905e2f4..31a7069569 100644 --- a/vendor/github.com/prometheus/client_golang/prometheus/promhttp/delegator_1_8.go +++ b/vendor/github.com/prometheus/client_golang/prometheus/promhttp/delegator_1_8.go @@ -22,27 +22,27 @@ import ( type pusherDelegator struct{ *responseWriterDelegator } -func (d *pusherDelegator) Push(target string, opts *http.PushOptions) error { +func (d pusherDelegator) Push(target string, opts *http.PushOptions) error { return d.ResponseWriter.(http.Pusher).Push(target, opts) } func init() { pickDelegator[pusher] = func(d *responseWriterDelegator) delegator { // 16 - return &pusherDelegator{d} + return pusherDelegator{d} } pickDelegator[pusher+closeNotifier] = func(d *responseWriterDelegator) delegator { // 17 return struct { *responseWriterDelegator http.Pusher http.CloseNotifier - }{d, &pusherDelegator{d}, &closeNotifierDelegator{d}} + }{d, pusherDelegator{d}, closeNotifierDelegator{d}} } pickDelegator[pusher+flusher] = func(d *responseWriterDelegator) delegator { // 18 return struct { *responseWriterDelegator http.Pusher http.Flusher - }{d, &pusherDelegator{d}, &flusherDelegator{d}} + }{d, pusherDelegator{d}, flusherDelegator{d}} } pickDelegator[pusher+flusher+closeNotifier] = func(d *responseWriterDelegator) delegator { // 19 return struct { @@ -50,14 +50,14 @@ func init() { http.Pusher http.Flusher http.CloseNotifier - }{d, &pusherDelegator{d}, &flusherDelegator{d}, &closeNotifierDelegator{d}} + }{d, pusherDelegator{d}, flusherDelegator{d}, closeNotifierDelegator{d}} } pickDelegator[pusher+hijacker] = func(d *responseWriterDelegator) delegator { // 20 return struct { *responseWriterDelegator http.Pusher http.Hijacker - }{d, &pusherDelegator{d}, &hijackerDelegator{d}} + }{d, pusherDelegator{d}, hijackerDelegator{d}} } pickDelegator[pusher+hijacker+closeNotifier] = func(d *responseWriterDelegator) delegator { // 21 return struct { @@ -65,7 +65,7 @@ func init() { http.Pusher http.Hijacker http.CloseNotifier - }{d, &pusherDelegator{d}, &hijackerDelegator{d}, &closeNotifierDelegator{d}} + }{d, pusherDelegator{d}, hijackerDelegator{d}, closeNotifierDelegator{d}} } pickDelegator[pusher+hijacker+flusher] = func(d *responseWriterDelegator) delegator { // 22 return struct { @@ -73,7 +73,7 @@ func init() { http.Pusher http.Hijacker http.Flusher - }{d, &pusherDelegator{d}, &hijackerDelegator{d}, &flusherDelegator{d}} + }{d, pusherDelegator{d}, hijackerDelegator{d}, flusherDelegator{d}} } pickDelegator[pusher+hijacker+flusher+closeNotifier] = func(d *responseWriterDelegator) delegator { //23 return struct { @@ -82,14 +82,14 @@ func init() { http.Hijacker http.Flusher http.CloseNotifier - }{d, &pusherDelegator{d}, &hijackerDelegator{d}, &flusherDelegator{d}, &closeNotifierDelegator{d}} + }{d, pusherDelegator{d}, hijackerDelegator{d}, flusherDelegator{d}, closeNotifierDelegator{d}} } pickDelegator[pusher+readerFrom] = func(d *responseWriterDelegator) delegator { // 24 return struct { *responseWriterDelegator http.Pusher io.ReaderFrom - }{d, &pusherDelegator{d}, &readerFromDelegator{d}} + }{d, pusherDelegator{d}, readerFromDelegator{d}} } pickDelegator[pusher+readerFrom+closeNotifier] = func(d *responseWriterDelegator) delegator { // 25 return struct { @@ -97,7 +97,7 @@ func init() { http.Pusher io.ReaderFrom http.CloseNotifier - }{d, &pusherDelegator{d}, &readerFromDelegator{d}, &closeNotifierDelegator{d}} + }{d, pusherDelegator{d}, readerFromDelegator{d}, closeNotifierDelegator{d}} } pickDelegator[pusher+readerFrom+flusher] = func(d *responseWriterDelegator) delegator { // 26 return struct { @@ -105,7 +105,7 @@ func init() { http.Pusher io.ReaderFrom http.Flusher - }{d, &pusherDelegator{d}, &readerFromDelegator{d}, &flusherDelegator{d}} + }{d, pusherDelegator{d}, readerFromDelegator{d}, flusherDelegator{d}} } pickDelegator[pusher+readerFrom+flusher+closeNotifier] = func(d *responseWriterDelegator) delegator { // 27 return struct { @@ -114,7 +114,7 @@ func init() { io.ReaderFrom http.Flusher http.CloseNotifier - }{d, &pusherDelegator{d}, &readerFromDelegator{d}, &flusherDelegator{d}, &closeNotifierDelegator{d}} + }{d, pusherDelegator{d}, readerFromDelegator{d}, flusherDelegator{d}, closeNotifierDelegator{d}} } pickDelegator[pusher+readerFrom+hijacker] = func(d *responseWriterDelegator) delegator { // 28 return struct { @@ -122,7 +122,7 @@ func init() { http.Pusher io.ReaderFrom http.Hijacker - }{d, &pusherDelegator{d}, &readerFromDelegator{d}, &hijackerDelegator{d}} + }{d, pusherDelegator{d}, readerFromDelegator{d}, hijackerDelegator{d}} } pickDelegator[pusher+readerFrom+hijacker+closeNotifier] = func(d *responseWriterDelegator) delegator { // 29 return struct { @@ -131,7 +131,7 @@ func init() { io.ReaderFrom http.Hijacker http.CloseNotifier - }{d, &pusherDelegator{d}, &readerFromDelegator{d}, &hijackerDelegator{d}, &closeNotifierDelegator{d}} + }{d, pusherDelegator{d}, readerFromDelegator{d}, hijackerDelegator{d}, closeNotifierDelegator{d}} } pickDelegator[pusher+readerFrom+hijacker+flusher] = func(d *responseWriterDelegator) delegator { // 30 return struct { @@ -140,7 +140,7 @@ func init() { io.ReaderFrom http.Hijacker http.Flusher - }{d, &pusherDelegator{d}, &readerFromDelegator{d}, &hijackerDelegator{d}, &flusherDelegator{d}} + }{d, pusherDelegator{d}, readerFromDelegator{d}, hijackerDelegator{d}, flusherDelegator{d}} } pickDelegator[pusher+readerFrom+hijacker+flusher+closeNotifier] = func(d *responseWriterDelegator) delegator { // 31 return struct { @@ -150,7 +150,7 @@ func init() { http.Hijacker http.Flusher http.CloseNotifier - }{d, &pusherDelegator{d}, &readerFromDelegator{d}, &hijackerDelegator{d}, &flusherDelegator{d}, &closeNotifierDelegator{d}} + }{d, pusherDelegator{d}, readerFromDelegator{d}, hijackerDelegator{d}, flusherDelegator{d}, closeNotifierDelegator{d}} } } diff --git a/vendor/github.com/prometheus/client_golang/prometheus/promhttp/http.go b/vendor/github.com/prometheus/client_golang/prometheus/promhttp/http.go index 8dc2603558..668eb6b3c9 100644 --- a/vendor/github.com/prometheus/client_golang/prometheus/promhttp/http.go +++ b/vendor/github.com/prometheus/client_golang/prometheus/promhttp/http.go @@ -32,7 +32,6 @@ package promhttp import ( - "bytes" "compress/gzip" "fmt" "io" @@ -53,19 +52,10 @@ const ( acceptEncodingHeader = "Accept-Encoding" ) -var bufPool sync.Pool - -func getBuf() *bytes.Buffer { - buf := bufPool.Get() - if buf == nil { - return &bytes.Buffer{} - } - return buf.(*bytes.Buffer) -} - -func giveBuf(buf *bytes.Buffer) { - buf.Reset() - bufPool.Put(buf) +var gzipPool = sync.Pool{ + New: func() interface{} { + return gzip.NewWriter(nil) + }, } // Handler returns an http.Handler for the prometheus.DefaultGatherer, using @@ -100,19 +90,18 @@ func HandlerFor(reg prometheus.Gatherer, opts HandlerOpts) http.Handler { inFlightSem = make(chan struct{}, opts.MaxRequestsInFlight) } - h := http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) { + h := http.HandlerFunc(func(rsp http.ResponseWriter, req *http.Request) { if inFlightSem != nil { select { case inFlightSem <- struct{}{}: // All good, carry on. defer func() { <-inFlightSem }() default: - http.Error(w, fmt.Sprintf( + http.Error(rsp, fmt.Sprintf( "Limit of concurrent requests reached (%d), try again later.", opts.MaxRequestsInFlight, ), http.StatusServiceUnavailable) return } } - mfs, err := reg.Gather() if err != nil { if opts.ErrorLog != nil { @@ -123,26 +112,40 @@ func HandlerFor(reg prometheus.Gatherer, opts HandlerOpts) http.Handler { panic(err) case ContinueOnError: if len(mfs) == 0 { - http.Error(w, "No metrics gathered, last error:\n\n"+err.Error(), http.StatusInternalServerError) + // Still report the error if no metrics have been gathered. + httpError(rsp, err) return } case HTTPErrorOnError: - http.Error(w, "An error has occurred during metrics gathering:\n\n"+err.Error(), http.StatusInternalServerError) + httpError(rsp, err) return } } contentType := expfmt.Negotiate(req.Header) - buf := getBuf() - defer giveBuf(buf) - writer, encoding := decorateWriter(req, buf, opts.DisableCompression) - enc := expfmt.NewEncoder(writer, contentType) + header := rsp.Header() + header.Set(contentTypeHeader, string(contentType)) + + w := io.Writer(rsp) + if !opts.DisableCompression && gzipAccepted(req.Header) { + header.Set(contentEncodingHeader, "gzip") + gz := gzipPool.Get().(*gzip.Writer) + defer gzipPool.Put(gz) + + gz.Reset(w) + defer gz.Close() + + w = gz + } + + enc := expfmt.NewEncoder(w, contentType) + var lastErr error for _, mf := range mfs { if err := enc.Encode(mf); err != nil { lastErr = err if opts.ErrorLog != nil { - opts.ErrorLog.Println("error encoding metric family:", err) + opts.ErrorLog.Println("error encoding and sending metric family:", err) } switch opts.ErrorHandling { case PanicOnError: @@ -150,28 +153,15 @@ func HandlerFor(reg prometheus.Gatherer, opts HandlerOpts) http.Handler { case ContinueOnError: // Handled later. case HTTPErrorOnError: - http.Error(w, "An error has occurred during metrics encoding:\n\n"+err.Error(), http.StatusInternalServerError) + httpError(rsp, err) return } } } - if closer, ok := writer.(io.Closer); ok { - closer.Close() - } - if lastErr != nil && buf.Len() == 0 { - http.Error(w, "No metrics encoded, last error:\n\n"+lastErr.Error(), http.StatusInternalServerError) - return - } - header := w.Header() - header.Set(contentTypeHeader, string(contentType)) - header.Set(contentLengthHeader, fmt.Sprint(buf.Len())) - if encoding != "" { - header.Set(contentEncodingHeader, encoding) - } - if _, err := w.Write(buf.Bytes()); err != nil && opts.ErrorLog != nil { - opts.ErrorLog.Println("error while sending encoded metrics:", err) + + if lastErr != nil { + httpError(rsp, lastErr) } - // TODO(beorn7): Consider streaming serving of metrics. }) if opts.Timeout <= 0 { @@ -292,20 +282,30 @@ type HandlerOpts struct { Timeout time.Duration } -// decorateWriter wraps a writer to handle gzip compression if requested. It -// returns the decorated writer and the appropriate "Content-Encoding" header -// (which is empty if no compression is enabled). -func decorateWriter(request *http.Request, writer io.Writer, compressionDisabled bool) (io.Writer, string) { - if compressionDisabled { - return writer, "" - } - header := request.Header.Get(acceptEncodingHeader) - parts := strings.Split(header, ",") +// gzipAccepted returns whether the client will accept gzip-encoded content. +func gzipAccepted(header http.Header) bool { + a := header.Get(acceptEncodingHeader) + parts := strings.Split(a, ",") for _, part := range parts { - part := strings.TrimSpace(part) + part = strings.TrimSpace(part) if part == "gzip" || strings.HasPrefix(part, "gzip;") { - return gzip.NewWriter(writer), "gzip" + return true } } - return writer, "" + return false +} + +// httpError removes any content-encoding header and then calls http.Error with +// the provided error and http.StatusInternalServerErrer. Error contents is +// supposed to be uncompressed plain text. However, same as with a plain +// http.Error, any header settings will be void if the header has already been +// sent. The error message will still be written to the writer, but it will +// probably be of limited use. +func httpError(rsp http.ResponseWriter, err error) { + rsp.Header().Del(contentEncodingHeader) + http.Error( + rsp, + "An error has occurred while serving metrics:\n\n"+err.Error(), + http.StatusInternalServerError, + ) } diff --git a/vendor/github.com/prometheus/client_golang/prometheus/promhttp/instrument_client_1_8.go b/vendor/github.com/prometheus/client_golang/prometheus/promhttp/instrument_client_1_8.go index 0bd80c3552..a034d1ec0f 100644 --- a/vendor/github.com/prometheus/client_golang/prometheus/promhttp/instrument_client_1_8.go +++ b/vendor/github.com/prometheus/client_golang/prometheus/promhttp/instrument_client_1_8.go @@ -81,8 +81,8 @@ func InstrumentRoundTripperTrace(it *InstrumentTrace, next http.RoundTripper) Ro } }, DNSDone: func(_ httptrace.DNSDoneInfo) { - if it.DNSStart != nil { - it.DNSStart(time.Since(start).Seconds()) + if it.DNSDone != nil { + it.DNSDone(time.Since(start).Seconds()) } }, ConnectStart: func(_, _ string) { diff --git a/vendor/github.com/prometheus/client_golang/prometheus/registry.go b/vendor/github.com/prometheus/client_golang/prometheus/registry.go index bee3703640..b5e70b93fa 100644 --- a/vendor/github.com/prometheus/client_golang/prometheus/registry.go +++ b/vendor/github.com/prometheus/client_golang/prometheus/registry.go @@ -15,17 +15,22 @@ package prometheus import ( "bytes" - "errors" "fmt" + "io/ioutil" "os" + "path/filepath" "runtime" "sort" + "strings" "sync" "unicode/utf8" "github.com/golang/protobuf/proto" + "github.com/prometheus/common/expfmt" dto "github.com/prometheus/client_model/go" + + "github.com/prometheus/client_golang/prometheus/internal" ) const ( @@ -38,12 +43,13 @@ const ( // Registerer and Gatherer interface a number of convenience functions in this // package act on. Initially, both variables point to the same Registry, which // has a process collector (currently on Linux only, see NewProcessCollector) -// and a Go collector (see NewGoCollector) already registered. This approach to -// keep default instances as global state mirrors the approach of other packages -// in the Go standard library. Note that there are caveats. Change the variables -// with caution and only if you understand the consequences. Users who want to -// avoid global state altogether should not use the convenience functions and -// act on custom instances instead. +// and a Go collector (see NewGoCollector, in particular the note about +// stop-the-world implication with Go versions older than 1.9) already +// registered. This approach to keep default instances as global state mirrors +// the approach of other packages in the Go standard library. Note that there +// are caveats. Change the variables with caution and only if you understand the +// consequences. Users who want to avoid global state altogether should not use +// the convenience functions and act on custom instances instead. var ( defaultRegistry = NewRegistry() DefaultRegisterer Registerer = defaultRegistry @@ -51,7 +57,7 @@ var ( ) func init() { - MustRegister(NewProcessCollector(os.Getpid(), "")) + MustRegister(NewProcessCollector(ProcessCollectorOpts{})) MustRegister(NewGoCollector()) } @@ -67,7 +73,8 @@ func NewRegistry() *Registry { // NewPedanticRegistry returns a registry that checks during collection if each // collected Metric is consistent with its reported Desc, and if the Desc has -// actually been registered with the registry. +// actually been registered with the registry. Unchecked Collectors (those whose +// Describe methed does not yield any descriptors) are excluded from the check. // // Usually, a Registry will be happy as long as the union of all collected // Metrics is consistent and valid even if some metrics are not consistent with @@ -97,8 +104,13 @@ type Registerer interface { // returned error is an instance of AlreadyRegisteredError, which // contains the previously registered Collector. // - // It is in general not safe to register the same Collector multiple - // times concurrently. + // A Collector whose Describe method does not yield any Desc is treated + // as unchecked. Registration will always succeed. No check for + // re-registering (see previous paragraph) is performed. Thus, the + // caller is responsible for not double-registering the same unchecked + // Collector, and for providing a Collector that will not cause + // inconsistent metrics on collection. (This would lead to scrape + // errors.) Register(Collector) error // MustRegister works like Register but registers any number of // Collectors and panics upon the first registration that causes an @@ -107,7 +119,9 @@ type Registerer interface { // Unregister unregisters the Collector that equals the Collector passed // in as an argument. (Two Collectors are considered equal if their // Describe method yields the same set of descriptors.) The function - // returns whether a Collector was unregistered. + // returns whether a Collector was unregistered. Note that an unchecked + // Collector cannot be unregistered (as its Describe method does not + // yield any descriptor). // // Note that even after unregistering, it will not be possible to // register a new Collector that is inconsistent with the unregistered @@ -125,15 +139,23 @@ type Registerer interface { type Gatherer interface { // Gather calls the Collect method of the registered Collectors and then // gathers the collected metrics into a lexicographically sorted slice - // of MetricFamily protobufs. Even if an error occurs, Gather attempts - // to gather as many metrics as possible. Hence, if a non-nil error is - // returned, the returned MetricFamily slice could be nil (in case of a - // fatal error that prevented any meaningful metric collection) or - // contain a number of MetricFamily protobufs, some of which might be - // incomplete, and some might be missing altogether. The returned error - // (which might be a MultiError) explains the details. In scenarios - // where complete collection is critical, the returned MetricFamily - // protobufs should be disregarded if the returned error is non-nil. + // of uniquely named MetricFamily protobufs. Gather ensures that the + // returned slice is valid and self-consistent so that it can be used + // for valid exposition. As an exception to the strict consistency + // requirements described for metric.Desc, Gather will tolerate + // different sets of label names for metrics of the same metric family. + // + // Even if an error occurs, Gather attempts to gather as many metrics as + // possible. Hence, if a non-nil error is returned, the returned + // MetricFamily slice could be nil (in case of a fatal error that + // prevented any meaningful metric collection) or contain a number of + // MetricFamily protobufs, some of which might be incomplete, and some + // might be missing altogether. The returned error (which might be a + // MultiError) explains the details. Note that this is mostly useful for + // debugging purposes. If the gathered protobufs are to be used for + // exposition in actual monitoring, it is almost always better to not + // expose an incomplete result and instead disregard the returned + // MetricFamily protobufs in case the returned error is non-nil. Gather() ([]*dto.MetricFamily, error) } @@ -234,6 +256,7 @@ type Registry struct { collectorsByID map[uint64]Collector // ID is a hash of the descIDs. descIDs map[uint64]struct{} dimHashesByName map[string]uint64 + uncheckedCollectors []Collector pedanticChecksEnabled bool } @@ -251,7 +274,12 @@ func (r *Registry) Register(c Collector) error { close(descChan) }() r.mtx.Lock() - defer r.mtx.Unlock() + defer func() { + // Drain channel in case of premature return to not leak a goroutine. + for range descChan { + } + r.mtx.Unlock() + }() // Conduct various tests... for desc := range descChan { @@ -291,9 +319,10 @@ func (r *Registry) Register(c Collector) error { } } } - // Did anything happen at all? + // A Collector yielding no Desc at all is considered unchecked. if len(newDescIDs) == 0 { - return errors.New("collector has no descriptors") + r.uncheckedCollectors = append(r.uncheckedCollectors, c) + return nil } if existing, exists := r.collectorsByID[collectorID]; exists { return AlreadyRegisteredError{ @@ -367,20 +396,24 @@ func (r *Registry) MustRegister(cs ...Collector) { // Gather implements Gatherer. func (r *Registry) Gather() ([]*dto.MetricFamily, error) { var ( - metricChan = make(chan Metric, capMetricChan) - metricHashes = map[uint64]struct{}{} - dimHashes = map[string]uint64{} - wg sync.WaitGroup - errs MultiError // The collected errors to return in the end. - registeredDescIDs map[uint64]struct{} // Only used for pedantic checks + checkedMetricChan = make(chan Metric, capMetricChan) + uncheckedMetricChan = make(chan Metric, capMetricChan) + metricHashes = map[uint64]struct{}{} + wg sync.WaitGroup + errs MultiError // The collected errors to return in the end. + registeredDescIDs map[uint64]struct{} // Only used for pedantic checks ) r.mtx.RLock() - goroutineBudget := len(r.collectorsByID) + goroutineBudget := len(r.collectorsByID) + len(r.uncheckedCollectors) metricFamiliesByName := make(map[string]*dto.MetricFamily, len(r.dimHashesByName)) - collectors := make(chan Collector, len(r.collectorsByID)) + checkedCollectors := make(chan Collector, len(r.collectorsByID)) + uncheckedCollectors := make(chan Collector, len(r.uncheckedCollectors)) for _, collector := range r.collectorsByID { - collectors <- collector + checkedCollectors <- collector + } + for _, collector := range r.uncheckedCollectors { + uncheckedCollectors <- collector } // In case pedantic checks are enabled, we have to copy the map before // giving up the RLock. @@ -397,12 +430,14 @@ func (r *Registry) Gather() ([]*dto.MetricFamily, error) { collectWorker := func() { for { select { - case collector := <-collectors: - collector.Collect(metricChan) - wg.Done() + case collector := <-checkedCollectors: + collector.Collect(checkedMetricChan) + case collector := <-uncheckedCollectors: + collector.Collect(uncheckedMetricChan) default: return } + wg.Done() } } @@ -410,53 +445,128 @@ func (r *Registry) Gather() ([]*dto.MetricFamily, error) { go collectWorker() goroutineBudget-- - // Close the metricChan once all collectors are collected. + // Close checkedMetricChan and uncheckedMetricChan once all collectors + // are collected. go func() { wg.Wait() - close(metricChan) + close(checkedMetricChan) + close(uncheckedMetricChan) }() - // Drain metricChan in case of premature return. + // Drain checkedMetricChan and uncheckedMetricChan in case of premature return. defer func() { - for range metricChan { + if checkedMetricChan != nil { + for range checkedMetricChan { + } + } + if uncheckedMetricChan != nil { + for range uncheckedMetricChan { + } } }() -collectLoop: + // Copy the channel references so we can nil them out later to remove + // them from the select statements below. + cmc := checkedMetricChan + umc := uncheckedMetricChan + for { select { - case metric, ok := <-metricChan: + case metric, ok := <-cmc: if !ok { - // metricChan is closed, we are done. - break collectLoop + cmc = nil + break } errs.Append(processMetric( metric, metricFamiliesByName, - metricHashes, dimHashes, + metricHashes, registeredDescIDs, )) + case metric, ok := <-umc: + if !ok { + umc = nil + break + } + errs.Append(processMetric( + metric, metricFamiliesByName, + metricHashes, + nil, + )) default: - if goroutineBudget <= 0 || len(collectors) == 0 { - // All collectors are aleady being worked on or + if goroutineBudget <= 0 || len(checkedCollectors)+len(uncheckedCollectors) == 0 { + // All collectors are already being worked on or // we have already as many goroutines started as - // there are collectors. Just process metrics - // from now on. - for metric := range metricChan { + // there are collectors. Do the same as above, + // just without the default. + select { + case metric, ok := <-cmc: + if !ok { + cmc = nil + break + } errs.Append(processMetric( metric, metricFamiliesByName, - metricHashes, dimHashes, + metricHashes, registeredDescIDs, )) + case metric, ok := <-umc: + if !ok { + umc = nil + break + } + errs.Append(processMetric( + metric, metricFamiliesByName, + metricHashes, + nil, + )) } - break collectLoop + break } // Start more workers. go collectWorker() goroutineBudget-- runtime.Gosched() } + // Once both checkedMetricChan and uncheckdMetricChan are closed + // and drained, the contraption above will nil out cmc and umc, + // and then we can leave the collect loop here. + if cmc == nil && umc == nil { + break + } + } + return internal.NormalizeMetricFamilies(metricFamiliesByName), errs.MaybeUnwrap() +} + +// WriteToTextfile calls Gather on the provided Gatherer, encodes the result in the +// Prometheus text format, and writes it to a temporary file. Upon success, the +// temporary file is renamed to the provided filename. +// +// This is intended for use with the textfile collector of the node exporter. +// Note that the node exporter expects the filename to be suffixed with ".prom". +func WriteToTextfile(filename string, g Gatherer) error { + tmp, err := ioutil.TempFile(filepath.Dir(filename), filepath.Base(filename)) + if err != nil { + return err + } + defer os.Remove(tmp.Name()) + + mfs, err := g.Gather() + if err != nil { + return err + } + for _, mf := range mfs { + if _, err := expfmt.MetricFamilyToText(tmp, mf); err != nil { + return err + } + } + if err := tmp.Close(); err != nil { + return err + } + + if err := os.Chmod(tmp.Name(), 0644); err != nil { + return err } - return normalizeMetricFamilies(metricFamiliesByName), errs.MaybeUnwrap() + return os.Rename(tmp.Name(), filename) } // processMetric is an internal helper method only used by the Gather method. @@ -464,16 +574,20 @@ func processMetric( metric Metric, metricFamiliesByName map[string]*dto.MetricFamily, metricHashes map[uint64]struct{}, - dimHashes map[string]uint64, registeredDescIDs map[uint64]struct{}, ) error { desc := metric.Desc() + // Wrapped metrics collected by an unchecked Collector can have an + // invalid Desc. + if desc.err != nil { + return desc.err + } dtoMetric := &dto.Metric{} if err := metric.Write(dtoMetric); err != nil { return fmt.Errorf("error collecting metric %v: %s", desc, err) } metricFamily, ok := metricFamiliesByName[desc.fqName] - if ok { + if ok { // Existing name. if metricFamily.GetHelp() != desc.help { return fmt.Errorf( "collected metric %s %s has help %q but should have %q", @@ -520,7 +634,7 @@ func processMetric( default: panic("encountered MetricFamily with invalid type") } - } else { + } else { // New name. metricFamily = &dto.MetricFamily{} metricFamily.Name = proto.String(desc.fqName) metricFamily.Help = proto.String(desc.help) @@ -539,9 +653,12 @@ func processMetric( default: return fmt.Errorf("empty metric collected: %s", dtoMetric) } + if err := checkSuffixCollisions(metricFamily, metricFamiliesByName); err != nil { + return err + } metricFamiliesByName[desc.fqName] = metricFamily } - if err := checkMetricConsistency(metricFamily, dtoMetric, metricHashes, dimHashes); err != nil { + if err := checkMetricConsistency(metricFamily, dtoMetric, metricHashes); err != nil { return err } if registeredDescIDs != nil { @@ -583,7 +700,6 @@ func (gs Gatherers) Gather() ([]*dto.MetricFamily, error) { var ( metricFamiliesByName = map[string]*dto.MetricFamily{} metricHashes = map[uint64]struct{}{} - dimHashes = map[string]uint64{} errs MultiError // The collected errors to return in the end. ) @@ -620,10 +736,14 @@ func (gs Gatherers) Gather() ([]*dto.MetricFamily, error) { existingMF.Name = mf.Name existingMF.Help = mf.Help existingMF.Type = mf.Type + if err := checkSuffixCollisions(existingMF, metricFamiliesByName); err != nil { + errs = append(errs, err) + continue + } metricFamiliesByName[mf.GetName()] = existingMF } for _, m := range mf.Metric { - if err := checkMetricConsistency(existingMF, m, metricHashes, dimHashes); err != nil { + if err := checkMetricConsistency(existingMF, m, metricHashes); err != nil { errs = append(errs, err) continue } @@ -631,88 +751,80 @@ func (gs Gatherers) Gather() ([]*dto.MetricFamily, error) { } } } - return normalizeMetricFamilies(metricFamiliesByName), errs.MaybeUnwrap() -} - -// metricSorter is a sortable slice of *dto.Metric. -type metricSorter []*dto.Metric - -func (s metricSorter) Len() int { - return len(s) -} - -func (s metricSorter) Swap(i, j int) { - s[i], s[j] = s[j], s[i] -} - -func (s metricSorter) Less(i, j int) bool { - if len(s[i].Label) != len(s[j].Label) { - // This should not happen. The metrics are - // inconsistent. However, we have to deal with the fact, as - // people might use custom collectors or metric family injection - // to create inconsistent metrics. So let's simply compare the - // number of labels in this case. That will still yield - // reproducible sorting. - return len(s[i].Label) < len(s[j].Label) - } - for n, lp := range s[i].Label { - vi := lp.GetValue() - vj := s[j].Label[n].GetValue() - if vi != vj { - return vi < vj - } - } - - // We should never arrive here. Multiple metrics with the same - // label set in the same scrape will lead to undefined ingestion - // behavior. However, as above, we have to provide stable sorting - // here, even for inconsistent metrics. So sort equal metrics - // by their timestamp, with missing timestamps (implying "now") - // coming last. - if s[i].TimestampMs == nil { - return false - } - if s[j].TimestampMs == nil { - return true - } - return s[i].GetTimestampMs() < s[j].GetTimestampMs() + return internal.NormalizeMetricFamilies(metricFamiliesByName), errs.MaybeUnwrap() } -// normalizeMetricFamilies returns a MetricFamily slice with empty -// MetricFamilies pruned and the remaining MetricFamilies sorted by name within -// the slice, with the contained Metrics sorted within each MetricFamily. -func normalizeMetricFamilies(metricFamiliesByName map[string]*dto.MetricFamily) []*dto.MetricFamily { - for _, mf := range metricFamiliesByName { - sort.Sort(metricSorter(mf.Metric)) +// checkSuffixCollisions checks for collisions with the “magic” suffixes the +// Prometheus text format and the internal metric representation of the +// Prometheus server add while flattening Summaries and Histograms. +func checkSuffixCollisions(mf *dto.MetricFamily, mfs map[string]*dto.MetricFamily) error { + var ( + newName = mf.GetName() + newType = mf.GetType() + newNameWithoutSuffix = "" + ) + switch { + case strings.HasSuffix(newName, "_count"): + newNameWithoutSuffix = newName[:len(newName)-6] + case strings.HasSuffix(newName, "_sum"): + newNameWithoutSuffix = newName[:len(newName)-4] + case strings.HasSuffix(newName, "_bucket"): + newNameWithoutSuffix = newName[:len(newName)-7] + } + if newNameWithoutSuffix != "" { + if existingMF, ok := mfs[newNameWithoutSuffix]; ok { + switch existingMF.GetType() { + case dto.MetricType_SUMMARY: + if !strings.HasSuffix(newName, "_bucket") { + return fmt.Errorf( + "collected metric named %q collides with previously collected summary named %q", + newName, newNameWithoutSuffix, + ) + } + case dto.MetricType_HISTOGRAM: + return fmt.Errorf( + "collected metric named %q collides with previously collected histogram named %q", + newName, newNameWithoutSuffix, + ) + } + } } - names := make([]string, 0, len(metricFamiliesByName)) - for name, mf := range metricFamiliesByName { - if len(mf.Metric) > 0 { - names = append(names, name) + if newType == dto.MetricType_SUMMARY || newType == dto.MetricType_HISTOGRAM { + if _, ok := mfs[newName+"_count"]; ok { + return fmt.Errorf( + "collected histogram or summary named %q collides with previously collected metric named %q", + newName, newName+"_count", + ) + } + if _, ok := mfs[newName+"_sum"]; ok { + return fmt.Errorf( + "collected histogram or summary named %q collides with previously collected metric named %q", + newName, newName+"_sum", + ) } } - sort.Strings(names) - result := make([]*dto.MetricFamily, 0, len(names)) - for _, name := range names { - result = append(result, metricFamiliesByName[name]) + if newType == dto.MetricType_HISTOGRAM { + if _, ok := mfs[newName+"_bucket"]; ok { + return fmt.Errorf( + "collected histogram named %q collides with previously collected metric named %q", + newName, newName+"_bucket", + ) + } } - return result + return nil } // checkMetricConsistency checks if the provided Metric is consistent with the -// provided MetricFamily. It also hashed the Metric labels and the MetricFamily +// provided MetricFamily. It also hashes the Metric labels and the MetricFamily // name. If the resulting hash is already in the provided metricHashes, an error -// is returned. If not, it is added to metricHashes. The provided dimHashes maps -// MetricFamily names to their dimHash (hashed sorted label names). If dimHashes -// doesn't yet contain a hash for the provided MetricFamily, it is -// added. Otherwise, an error is returned if the existing dimHashes in not equal -// the calculated dimHash. +// is returned. If not, it is added to metricHashes. func checkMetricConsistency( metricFamily *dto.MetricFamily, dtoMetric *dto.Metric, metricHashes map[uint64]struct{}, - dimHashes map[string]uint64, ) error { + name := metricFamily.GetName() + // Type consistency with metric family. if metricFamily.GetType() == dto.MetricType_GAUGE && dtoMetric.Gauge == nil || metricFamily.GetType() == dto.MetricType_COUNTER && dtoMetric.Counter == nil || @@ -720,47 +832,65 @@ func checkMetricConsistency( metricFamily.GetType() == dto.MetricType_HISTOGRAM && dtoMetric.Histogram == nil || metricFamily.GetType() == dto.MetricType_UNTYPED && dtoMetric.Untyped == nil { return fmt.Errorf( - "collected metric %s %s is not a %s", - metricFamily.GetName(), dtoMetric, metricFamily.GetType(), + "collected metric %q { %s} is not a %s", + name, dtoMetric, metricFamily.GetType(), ) } + previousLabelName := "" for _, labelPair := range dtoMetric.GetLabel() { - if !utf8.ValidString(*labelPair.Value) { - return fmt.Errorf("collected metric's label %s is not utf8: %#v", *labelPair.Name, *labelPair.Value) + labelName := labelPair.GetName() + if labelName == previousLabelName { + return fmt.Errorf( + "collected metric %q { %s} has two or more labels with the same name: %s", + name, dtoMetric, labelName, + ) + } + if !checkLabelName(labelName) { + return fmt.Errorf( + "collected metric %q { %s} has a label with an invalid name: %s", + name, dtoMetric, labelName, + ) } + if dtoMetric.Summary != nil && labelName == quantileLabel { + return fmt.Errorf( + "collected metric %q { %s} must not have an explicit %q label", + name, dtoMetric, quantileLabel, + ) + } + if !utf8.ValidString(labelPair.GetValue()) { + return fmt.Errorf( + "collected metric %q { %s} has a label named %q whose value is not utf8: %#v", + name, dtoMetric, labelName, labelPair.GetValue()) + } + previousLabelName = labelName } - // Is the metric unique (i.e. no other metric with the same name and the same label values)? + // Is the metric unique (i.e. no other metric with the same name and the same labels)? h := hashNew() - h = hashAdd(h, metricFamily.GetName()) + h = hashAdd(h, name) h = hashAddByte(h, separatorByte) - dh := hashNew() // Make sure label pairs are sorted. We depend on it for the consistency // check. - sort.Sort(LabelPairSorter(dtoMetric.Label)) + if !sort.IsSorted(labelPairSorter(dtoMetric.Label)) { + // We cannot sort dtoMetric.Label in place as it is immutable by contract. + copiedLabels := make([]*dto.LabelPair, len(dtoMetric.Label)) + copy(copiedLabels, dtoMetric.Label) + sort.Sort(labelPairSorter(copiedLabels)) + dtoMetric.Label = copiedLabels + } for _, lp := range dtoMetric.Label { + h = hashAdd(h, lp.GetName()) + h = hashAddByte(h, separatorByte) h = hashAdd(h, lp.GetValue()) h = hashAddByte(h, separatorByte) - dh = hashAdd(dh, lp.GetName()) - dh = hashAddByte(dh, separatorByte) } if _, exists := metricHashes[h]; exists { return fmt.Errorf( - "collected metric %s %s was collected before with the same name and label values", - metricFamily.GetName(), dtoMetric, + "collected metric %q { %s} was collected before with the same name and label values", + name, dtoMetric, ) } - if dimHash, ok := dimHashes[metricFamily.GetName()]; ok { - if dimHash != dh { - return fmt.Errorf( - "collected metric %s %s has label dimensions inconsistent with previously collected metrics in the same metric family", - metricFamily.GetName(), dtoMetric, - ) - } - } else { - dimHashes[metricFamily.GetName()] = dh - } metricHashes[h] = struct{}{} return nil } @@ -779,8 +909,8 @@ func checkDescConsistency( } // Is the desc consistent with the content of the metric? - lpsFromDesc := make([]*dto.LabelPair, 0, len(dtoMetric.Label)) - lpsFromDesc = append(lpsFromDesc, desc.constLabelPairs...) + lpsFromDesc := make([]*dto.LabelPair, len(desc.constLabelPairs), len(dtoMetric.Label)) + copy(lpsFromDesc, desc.constLabelPairs) for _, l := range desc.variableLabels { lpsFromDesc = append(lpsFromDesc, &dto.LabelPair{ Name: proto.String(l), @@ -792,7 +922,7 @@ func checkDescConsistency( metricFamily.GetName(), dtoMetric, desc, ) } - sort.Sort(LabelPairSorter(lpsFromDesc)) + sort.Sort(labelPairSorter(lpsFromDesc)) for i, lpFromDesc := range lpsFromDesc { lpFromMetric := dtoMetric.Label[i] if lpFromDesc.GetName() != lpFromMetric.GetName() || diff --git a/vendor/github.com/prometheus/client_golang/prometheus/summary.go b/vendor/github.com/prometheus/client_golang/prometheus/summary.go index f7dc85b96d..2980614dff 100644 --- a/vendor/github.com/prometheus/client_golang/prometheus/summary.go +++ b/vendor/github.com/prometheus/client_golang/prometheus/summary.go @@ -37,7 +37,7 @@ const quantileLabel = "quantile" // A typical use-case is the observation of request latencies. By default, a // Summary provides the median, the 90th and the 99th percentile of the latency // as rank estimations. However, the default behavior will change in the -// upcoming v0.10 of the library. There will be no rank estiamtions at all by +// upcoming v0.10 of the library. There will be no rank estimations at all by // default. For a sane transition, it is recommended to set the desired rank // estimations explicitly. // @@ -81,10 +81,10 @@ const ( ) // SummaryOpts bundles the options for creating a Summary metric. It is -// mandatory to set Name and Help to a non-empty string. While all other fields -// are optional and can safely be left at their zero value, it is recommended to -// explicitly set the Objectives field to the desired value as the default value -// will change in the upcoming v0.10 of the library. +// mandatory to set Name to a non-empty string. While all other fields are +// optional and can safely be left at their zero value, it is recommended to set +// a help string and to explicitly set the Objectives field to the desired value +// as the default value will change in the upcoming v0.10 of the library. type SummaryOpts struct { // Namespace, Subsystem, and Name are components of the fully-qualified // name of the Summary (created by joining these components with @@ -95,7 +95,7 @@ type SummaryOpts struct { Subsystem string Name string - // Help provides information about this Summary. Mandatory! + // Help provides information about this Summary. // // Metrics with the same fully-qualified name must have the same Help // string. @@ -105,6 +105,11 @@ type SummaryOpts struct { // with the same fully-qualified name must have the same label names in // their ConstLabels. // + // Due to the way a Summary is represented in the Prometheus text format + // and how it is handled by the Prometheus server internally, “quantile” + // is an illegal label name. Construction of a Summary or SummaryVec + // will panic if this label name is used in ConstLabels. + // // ConstLabels are only used rarely. In particular, do not use them to // attach the same labels to all your metrics. Those use cases are // better covered by target labels set by the scraping Prometheus @@ -176,7 +181,7 @@ func NewSummary(opts SummaryOpts) Summary { func newSummary(desc *Desc, opts SummaryOpts, labelValues ...string) Summary { if len(desc.variableLabels) != len(labelValues) { - panic(errInconsistentCardinality) + panic(makeInconsistentCardinalityError(desc.fqName, desc.variableLabels, labelValues)) } for _, n := range desc.variableLabels { @@ -402,7 +407,16 @@ type SummaryVec struct { // NewSummaryVec creates a new SummaryVec based on the provided SummaryOpts and // partitioned by the given label names. +// +// Due to the way a Summary is represented in the Prometheus text format and how +// it is handled by the Prometheus server internally, “quantile” is an illegal +// label name. NewSummaryVec will panic if this label name is used. func NewSummaryVec(opts SummaryOpts, labelNames []string) *SummaryVec { + for _, ln := range labelNames { + if ln == quantileLabel { + panic(errQuantileLabelNotAllowed) + } + } desc := NewDesc( BuildFQName(opts.Namespace, opts.Subsystem, opts.Name), opts.Help, @@ -572,7 +586,7 @@ func (s *constSummary) Write(out *dto.Metric) error { // map[float64]float64{0.5: 0.23, 0.99: 0.56} // // NewConstSummary returns an error if the length of labelValues is not -// consistent with the variable labels in Desc. +// consistent with the variable labels in Desc or if Desc is invalid. func NewConstSummary( desc *Desc, count uint64, @@ -580,6 +594,9 @@ func NewConstSummary( quantiles map[float64]float64, labelValues ...string, ) (Metric, error) { + if desc.err != nil { + return nil, desc.err + } if err := validateLabelValues(labelValues, len(desc.variableLabels)); err != nil { return nil, err } diff --git a/vendor/github.com/prometheus/client_golang/prometheus/timer.go b/vendor/github.com/prometheus/client_golang/prometheus/timer.go index b8fc5f18c8..8d5f105233 100644 --- a/vendor/github.com/prometheus/client_golang/prometheus/timer.go +++ b/vendor/github.com/prometheus/client_golang/prometheus/timer.go @@ -39,13 +39,16 @@ func NewTimer(o Observer) *Timer { // ObserveDuration records the duration passed since the Timer was created with // NewTimer. It calls the Observe method of the Observer provided during -// construction with the duration in seconds as an argument. ObserveDuration is -// usually called with a defer statement. +// construction with the duration in seconds as an argument. The observed +// duration is also returned. ObserveDuration is usually called with a defer +// statement. // // Note that this method is only guaranteed to never observe negative durations // if used with Go1.9+. -func (t *Timer) ObserveDuration() { +func (t *Timer) ObserveDuration() time.Duration { + d := time.Since(t.begin) if t.observer != nil { - t.observer.Observe(time.Since(t.begin).Seconds()) + t.observer.Observe(d.Seconds()) } + return d } diff --git a/vendor/github.com/prometheus/client_golang/prometheus/value.go b/vendor/github.com/prometheus/client_golang/prometheus/value.go index 543b57c27e..eb248f1087 100644 --- a/vendor/github.com/prometheus/client_golang/prometheus/value.go +++ b/vendor/github.com/prometheus/client_golang/prometheus/value.go @@ -17,9 +17,9 @@ import ( "fmt" "sort" - dto "github.com/prometheus/client_model/go" - "github.com/golang/protobuf/proto" + + dto "github.com/prometheus/client_model/go" ) // ValueType is an enumeration of metric types that represent a simple value. @@ -77,8 +77,12 @@ func (v *valueFunc) Write(out *dto.Metric) error { // operations. However, when implementing custom Collectors, it is useful as a // throw-away metric that is generated on the fly to send it to Prometheus in // the Collect method. NewConstMetric returns an error if the length of -// labelValues is not consistent with the variable labels in Desc. +// labelValues is not consistent with the variable labels in Desc or if Desc is +// invalid. func NewConstMetric(desc *Desc, valueType ValueType, value float64, labelValues ...string) (Metric, error) { + if desc.err != nil { + return nil, desc.err + } if err := validateLabelValues(labelValues, len(desc.variableLabels)); err != nil { return nil, err } @@ -152,9 +156,7 @@ func makeLabelPairs(desc *Desc, labelValues []string) []*dto.LabelPair { Value: proto.String(labelValues[i]), }) } - for _, lp := range desc.constLabelPairs { - labelPairs = append(labelPairs, lp) - } - sort.Sort(LabelPairSorter(labelPairs)) + labelPairs = append(labelPairs, desc.constLabelPairs...) + sort.Sort(labelPairSorter(labelPairs)) return labelPairs } diff --git a/vendor/github.com/prometheus/client_golang/prometheus/vec.go b/vendor/github.com/prometheus/client_golang/prometheus/vec.go index cea1582499..14ed9e856d 100644 --- a/vendor/github.com/prometheus/client_golang/prometheus/vec.go +++ b/vendor/github.com/prometheus/client_golang/prometheus/vec.go @@ -277,6 +277,9 @@ func (m *metricMap) deleteByHashWithLabelValues( func (m *metricMap) deleteByHashWithLabels( h uint64, labels Labels, curry []curriedLabelValue, ) bool { + m.mtx.Lock() + defer m.mtx.Unlock() + metrics, ok := m.metrics[h] if !ok { return false diff --git a/vendor/github.com/prometheus/client_golang/prometheus/wrap.go b/vendor/github.com/prometheus/client_golang/prometheus/wrap.go new file mode 100644 index 0000000000..49159bf3eb --- /dev/null +++ b/vendor/github.com/prometheus/client_golang/prometheus/wrap.go @@ -0,0 +1,179 @@ +// Copyright 2018 The Prometheus Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package prometheus + +import ( + "fmt" + "sort" + + "github.com/golang/protobuf/proto" + + dto "github.com/prometheus/client_model/go" +) + +// WrapRegistererWith returns a Registerer wrapping the provided +// Registerer. Collectors registered with the returned Registerer will be +// registered with the wrapped Registerer in a modified way. The modified +// Collector adds the provided Labels to all Metrics it collects (as +// ConstLabels). The Metrics collected by the unmodified Collector must not +// duplicate any of those labels. +// +// WrapRegistererWith provides a way to add fixed labels to a subset of +// Collectors. It should not be used to add fixed labels to all metrics exposed. +// +// The Collector example demonstrates a use of WrapRegistererWith. +func WrapRegistererWith(labels Labels, reg Registerer) Registerer { + return &wrappingRegisterer{ + wrappedRegisterer: reg, + labels: labels, + } +} + +// WrapRegistererWithPrefix returns a Registerer wrapping the provided +// Registerer. Collectors registered with the returned Registerer will be +// registered with the wrapped Registerer in a modified way. The modified +// Collector adds the provided prefix to the name of all Metrics it collects. +// +// WrapRegistererWithPrefix is useful to have one place to prefix all metrics of +// a sub-system. To make this work, register metrics of the sub-system with the +// wrapping Registerer returned by WrapRegistererWithPrefix. It is rarely useful +// to use the same prefix for all metrics exposed. In particular, do not prefix +// metric names that are standardized across applications, as that would break +// horizontal monitoring, for example the metrics provided by the Go collector +// (see NewGoCollector) and the process collector (see NewProcessCollector). (In +// fact, those metrics are already prefixed with “go_” or “process_”, +// respectively.) +func WrapRegistererWithPrefix(prefix string, reg Registerer) Registerer { + return &wrappingRegisterer{ + wrappedRegisterer: reg, + prefix: prefix, + } +} + +type wrappingRegisterer struct { + wrappedRegisterer Registerer + prefix string + labels Labels +} + +func (r *wrappingRegisterer) Register(c Collector) error { + return r.wrappedRegisterer.Register(&wrappingCollector{ + wrappedCollector: c, + prefix: r.prefix, + labels: r.labels, + }) +} + +func (r *wrappingRegisterer) MustRegister(cs ...Collector) { + for _, c := range cs { + if err := r.Register(c); err != nil { + panic(err) + } + } +} + +func (r *wrappingRegisterer) Unregister(c Collector) bool { + return r.wrappedRegisterer.Unregister(&wrappingCollector{ + wrappedCollector: c, + prefix: r.prefix, + labels: r.labels, + }) +} + +type wrappingCollector struct { + wrappedCollector Collector + prefix string + labels Labels +} + +func (c *wrappingCollector) Collect(ch chan<- Metric) { + wrappedCh := make(chan Metric) + go func() { + c.wrappedCollector.Collect(wrappedCh) + close(wrappedCh) + }() + for m := range wrappedCh { + ch <- &wrappingMetric{ + wrappedMetric: m, + prefix: c.prefix, + labels: c.labels, + } + } +} + +func (c *wrappingCollector) Describe(ch chan<- *Desc) { + wrappedCh := make(chan *Desc) + go func() { + c.wrappedCollector.Describe(wrappedCh) + close(wrappedCh) + }() + for desc := range wrappedCh { + ch <- wrapDesc(desc, c.prefix, c.labels) + } +} + +type wrappingMetric struct { + wrappedMetric Metric + prefix string + labels Labels +} + +func (m *wrappingMetric) Desc() *Desc { + return wrapDesc(m.wrappedMetric.Desc(), m.prefix, m.labels) +} + +func (m *wrappingMetric) Write(out *dto.Metric) error { + if err := m.wrappedMetric.Write(out); err != nil { + return err + } + if len(m.labels) == 0 { + // No wrapping labels. + return nil + } + for ln, lv := range m.labels { + out.Label = append(out.Label, &dto.LabelPair{ + Name: proto.String(ln), + Value: proto.String(lv), + }) + } + sort.Sort(labelPairSorter(out.Label)) + return nil +} + +func wrapDesc(desc *Desc, prefix string, labels Labels) *Desc { + constLabels := Labels{} + for _, lp := range desc.constLabelPairs { + constLabels[*lp.Name] = *lp.Value + } + for ln, lv := range labels { + if _, alreadyUsed := constLabels[ln]; alreadyUsed { + return &Desc{ + fqName: desc.fqName, + help: desc.help, + variableLabels: desc.variableLabels, + constLabelPairs: desc.constLabelPairs, + err: fmt.Errorf("attempted wrapping with already existing label name %q", ln), + } + } + constLabels[ln] = lv + } + // NewDesc will do remaining validations. + newDesc := NewDesc(prefix+desc.fqName, desc.help, desc.variableLabels, constLabels) + // Propagate errors if there was any. This will override any errer + // created by NewDesc above, i.e. earlier errors get precedence. + if desc.err != nil { + newDesc.err = desc.err + } + return newDesc +} diff --git a/vendor/github.com/prometheus/procfs/.gitignore b/vendor/github.com/prometheus/procfs/.gitignore new file mode 100644 index 0000000000..25e3659ab2 --- /dev/null +++ b/vendor/github.com/prometheus/procfs/.gitignore @@ -0,0 +1 @@ +/fixtures/ diff --git a/vendor/github.com/prometheus/procfs/AUTHORS.md b/vendor/github.com/prometheus/procfs/AUTHORS.md deleted file mode 100644 index 0c802dd875..0000000000 --- a/vendor/github.com/prometheus/procfs/AUTHORS.md +++ /dev/null @@ -1,20 +0,0 @@ -The Prometheus project was started by Matt T. Proud (emeritus) and -Julius Volz in 2012. - -Maintainers of this repository: - -* Tobias Schmidt - -The following individuals have contributed code to this repository -(listed in alphabetical order): - -* Armen Baghumian -* Bjoern Rabenstein -* David Cournapeau -* Ji-Hoon, Seol -* Jonas Große Sundrup -* Julius Volz -* Matthias Rampke -* Nicky Gerritsen -* Rémi Audebert -* Tobias Schmidt diff --git a/vendor/github.com/prometheus/procfs/CONTRIBUTING.md b/vendor/github.com/prometheus/procfs/CONTRIBUTING.md index 5705f0fbea..40503edbf1 100644 --- a/vendor/github.com/prometheus/procfs/CONTRIBUTING.md +++ b/vendor/github.com/prometheus/procfs/CONTRIBUTING.md @@ -2,9 +2,9 @@ Prometheus uses GitHub to manage reviews of pull requests. -* If you have a trivial fix or improvement, go ahead and create a pull - request, addressing (with `@...`) one or more of the maintainers - (see [AUTHORS.md](AUTHORS.md)) in the description of the pull request. +* If you have a trivial fix or improvement, go ahead and create a pull request, + addressing (with `@...`) the maintainer of this repository (see + [MAINTAINERS.md](MAINTAINERS.md)) in the description of the pull request. * If you plan to do something more involved, first discuss your ideas on our [mailing list](https://groups.google.com/forum/?fromgroups#!forum/prometheus-developers). diff --git a/vendor/github.com/prometheus/procfs/MAINTAINERS.md b/vendor/github.com/prometheus/procfs/MAINTAINERS.md new file mode 100644 index 0000000000..35993c41c2 --- /dev/null +++ b/vendor/github.com/prometheus/procfs/MAINTAINERS.md @@ -0,0 +1 @@ +* Tobias Schmidt diff --git a/vendor/github.com/prometheus/procfs/Makefile b/vendor/github.com/prometheus/procfs/Makefile index c264a49d17..947d7d8fa7 100644 --- a/vendor/github.com/prometheus/procfs/Makefile +++ b/vendor/github.com/prometheus/procfs/Makefile @@ -1,6 +1,30 @@ -ci: - ! gofmt -l *.go | read nothing - go vet - go test -v ./... - go get github.com/golang/lint/golint - golint *.go +# Copyright 2018 The Prometheus Authors +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +include Makefile.common + +%/.unpacked: %.ttar + ./ttar -C $(dir $*) -x -f $*.ttar + touch $@ + +update_fixtures: fixtures.ttar sysfs/fixtures.ttar + +%fixtures.ttar: %/fixtures + rm -v $(dir $*)fixtures/.unpacked + ./ttar -C $(dir $*) -c -f $*fixtures.ttar fixtures/ + +.PHONY: build +build: + +.PHONY: test +test: fixtures/.unpacked sysfs/fixtures/.unpacked common-test diff --git a/vendor/github.com/prometheus/procfs/Makefile.common b/vendor/github.com/prometheus/procfs/Makefile.common new file mode 100644 index 0000000000..741579e60f --- /dev/null +++ b/vendor/github.com/prometheus/procfs/Makefile.common @@ -0,0 +1,223 @@ +# Copyright 2018 The Prometheus Authors +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + + +# A common Makefile that includes rules to be reused in different prometheus projects. +# !!! Open PRs only against the prometheus/prometheus/Makefile.common repository! + +# Example usage : +# Create the main Makefile in the root project directory. +# include Makefile.common +# customTarget: +# @echo ">> Running customTarget" +# + +# Ensure GOBIN is not set during build so that promu is installed to the correct path +unexport GOBIN + +GO ?= go +GOFMT ?= $(GO)fmt +FIRST_GOPATH := $(firstword $(subst :, ,$(shell $(GO) env GOPATH))) +GOOPTS ?= + +GO_VERSION ?= $(shell $(GO) version) +GO_VERSION_NUMBER ?= $(word 3, $(GO_VERSION)) +PRE_GO_111 ?= $(shell echo $(GO_VERSION_NUMBER) | grep -E 'go1\.(10|[0-9])\.') + +unexport GOVENDOR +ifeq (, $(PRE_GO_111)) + ifneq (,$(wildcard go.mod)) + # Enforce Go modules support just in case the directory is inside GOPATH (and for Travis CI). + GO111MODULE := on + + ifneq (,$(wildcard vendor)) + # Always use the local vendor/ directory to satisfy the dependencies. + GOOPTS := $(GOOPTS) -mod=vendor + endif + endif +else + ifneq (,$(wildcard go.mod)) + ifneq (,$(wildcard vendor)) +$(warning This repository requires Go >= 1.11 because of Go modules) +$(warning Some recipes may not work as expected as the current Go runtime is '$(GO_VERSION_NUMBER)') + endif + else + # This repository isn't using Go modules (yet). + GOVENDOR := $(FIRST_GOPATH)/bin/govendor + endif + + unexport GO111MODULE +endif +PROMU := $(FIRST_GOPATH)/bin/promu +STATICCHECK := $(FIRST_GOPATH)/bin/staticcheck +pkgs = ./... + +GO_VERSION ?= $(shell $(GO) version) +GO_BUILD_PLATFORM ?= $(subst /,-,$(lastword $(GO_VERSION))) + +PROMU_VERSION ?= 0.2.0 +PROMU_URL := https://github.com/prometheus/promu/releases/download/v$(PROMU_VERSION)/promu-$(PROMU_VERSION).$(GO_BUILD_PLATFORM).tar.gz + +PREFIX ?= $(shell pwd) +BIN_DIR ?= $(shell pwd) +DOCKER_IMAGE_TAG ?= $(subst /,-,$(shell git rev-parse --abbrev-ref HEAD)) +DOCKER_REPO ?= prom + +.PHONY: all +all: precheck style staticcheck unused build test + +# This rule is used to forward a target like "build" to "common-build". This +# allows a new "build" target to be defined in a Makefile which includes this +# one and override "common-build" without override warnings. +%: common-% ; + +.PHONY: common-style +common-style: + @echo ">> checking code style" + @fmtRes=$$($(GOFMT) -d $$(find . -path ./vendor -prune -o -name '*.go' -print)); \ + if [ -n "$${fmtRes}" ]; then \ + echo "gofmt checking failed!"; echo "$${fmtRes}"; echo; \ + echo "Please ensure you are using $$($(GO) version) for formatting code."; \ + exit 1; \ + fi + +.PHONY: common-check_license +common-check_license: + @echo ">> checking license header" + @licRes=$$(for file in $$(find . -type f -iname '*.go' ! -path './vendor/*') ; do \ + awk 'NR<=3' $$file | grep -Eq "(Copyright|generated|GENERATED)" || echo $$file; \ + done); \ + if [ -n "$${licRes}" ]; then \ + echo "license header checking failed:"; echo "$${licRes}"; \ + exit 1; \ + fi + +.PHONY: common-test-short +common-test-short: + @echo ">> running short tests" + GO111MODULE=$(GO111MODULE) $(GO) test -short $(GOOPTS) $(pkgs) + +.PHONY: common-test +common-test: + @echo ">> running all tests" + GO111MODULE=$(GO111MODULE) $(GO) test -race $(GOOPTS) $(pkgs) + +.PHONY: common-format +common-format: + @echo ">> formatting code" + GO111MODULE=$(GO111MODULE) $(GO) fmt $(GOOPTS) $(pkgs) + +.PHONY: common-vet +common-vet: + @echo ">> vetting code" + GO111MODULE=$(GO111MODULE) $(GO) vet $(GOOPTS) $(pkgs) + +.PHONY: common-staticcheck +common-staticcheck: $(STATICCHECK) + @echo ">> running staticcheck" +ifdef GO111MODULE + GO111MODULE=$(GO111MODULE) $(STATICCHECK) -ignore "$(STATICCHECK_IGNORE)" -checks "SA*" $(pkgs) +else + $(STATICCHECK) -ignore "$(STATICCHECK_IGNORE)" $(pkgs) +endif + +.PHONY: common-unused +common-unused: $(GOVENDOR) +ifdef GOVENDOR + @echo ">> running check for unused packages" + @$(GOVENDOR) list +unused | grep . && exit 1 || echo 'No unused packages' +else +ifdef GO111MODULE + @echo ">> running check for unused/missing packages in go.mod" + GO111MODULE=$(GO111MODULE) $(GO) mod tidy + @git diff --exit-code -- go.sum go.mod +ifneq (,$(wildcard vendor)) + @echo ">> running check for unused packages in vendor/" + GO111MODULE=$(GO111MODULE) $(GO) mod vendor + @git diff --exit-code -- go.sum go.mod vendor/ +endif +endif +endif + +.PHONY: common-build +common-build: promu + @echo ">> building binaries" + GO111MODULE=$(GO111MODULE) $(PROMU) build --prefix $(PREFIX) + +.PHONY: common-tarball +common-tarball: promu + @echo ">> building release tarball" + $(PROMU) tarball --prefix $(PREFIX) $(BIN_DIR) + +.PHONY: common-docker +common-docker: + docker build -t "$(DOCKER_REPO)/$(DOCKER_IMAGE_NAME):$(DOCKER_IMAGE_TAG)" . + +.PHONY: common-docker-publish +common-docker-publish: + docker push "$(DOCKER_REPO)/$(DOCKER_IMAGE_NAME)" + +.PHONY: common-docker-tag-latest +common-docker-tag-latest: + docker tag "$(DOCKER_REPO)/$(DOCKER_IMAGE_NAME):$(DOCKER_IMAGE_TAG)" "$(DOCKER_REPO)/$(DOCKER_IMAGE_NAME):latest" + +.PHONY: promu +promu: $(PROMU) + +$(PROMU): + curl -s -L $(PROMU_URL) | tar -xvz -C /tmp + mkdir -v -p $(FIRST_GOPATH)/bin + cp -v /tmp/promu-$(PROMU_VERSION).$(GO_BUILD_PLATFORM)/promu $(PROMU) + +.PHONY: proto +proto: + @echo ">> generating code from proto files" + @./scripts/genproto.sh + +.PHONY: $(STATICCHECK) +$(STATICCHECK): +ifdef GO111MODULE +# Get staticcheck from a temporary directory to avoid modifying the local go.{mod,sum}. +# See https://github.com/golang/go/issues/27643. +# For now, we are using the next branch of staticcheck because master isn't compatible yet with Go modules. + tmpModule=$$(mktemp -d 2>&1) && \ + mkdir -p $${tmpModule}/staticcheck && \ + cd "$${tmpModule}"/staticcheck && \ + GO111MODULE=on $(GO) mod init example.com/staticcheck && \ + GO111MODULE=on GOOS= GOARCH= $(GO) get -u honnef.co/go/tools/cmd/staticcheck@next && \ + rm -rf $${tmpModule}; +else + GOOS= GOARCH= GO111MODULE=off $(GO) get -u honnef.co/go/tools/cmd/staticcheck +endif + +ifdef GOVENDOR +.PHONY: $(GOVENDOR) +$(GOVENDOR): + GOOS= GOARCH= $(GO) get -u github.com/kardianos/govendor +endif + +.PHONY: precheck +precheck:: + +define PRECHECK_COMMAND_template = +precheck:: $(1)_precheck + + +PRECHECK_COMMAND_$(1) ?= $(1) $$(strip $$(PRECHECK_OPTIONS_$(1))) +.PHONY: $(1)_precheck +$(1)_precheck: + @if ! $$(PRECHECK_COMMAND_$(1)) 1>/dev/null 2>&1; then \ + echo "Execution of '$$(PRECHECK_COMMAND_$(1))' command failed. Is $(1) installed?"; \ + exit 1; \ + fi +endef diff --git a/vendor/github.com/prometheus/procfs/README.md b/vendor/github.com/prometheus/procfs/README.md index 6e7ee6b8b7..2095494719 100644 --- a/vendor/github.com/prometheus/procfs/README.md +++ b/vendor/github.com/prometheus/procfs/README.md @@ -8,3 +8,4 @@ backwards-incompatible ways without warnings. Use it at your own risk. [![GoDoc](https://godoc.org/github.com/prometheus/procfs?status.png)](https://godoc.org/github.com/prometheus/procfs) [![Build Status](https://travis-ci.org/prometheus/procfs.svg?branch=master)](https://travis-ci.org/prometheus/procfs) +[![Go Report Card](https://goreportcard.com/badge/github.com/prometheus/procfs)](https://goreportcard.com/report/github.com/prometheus/procfs) diff --git a/vendor/github.com/prometheus/procfs/buddyinfo.go b/vendor/github.com/prometheus/procfs/buddyinfo.go new file mode 100644 index 0000000000..d3a8268078 --- /dev/null +++ b/vendor/github.com/prometheus/procfs/buddyinfo.go @@ -0,0 +1,95 @@ +// Copyright 2017 The Prometheus Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package procfs + +import ( + "bufio" + "fmt" + "io" + "os" + "strconv" + "strings" +) + +// A BuddyInfo is the details parsed from /proc/buddyinfo. +// The data is comprised of an array of free fragments of each size. +// The sizes are 2^n*PAGE_SIZE, where n is the array index. +type BuddyInfo struct { + Node string + Zone string + Sizes []float64 +} + +// NewBuddyInfo reads the buddyinfo statistics. +func NewBuddyInfo() ([]BuddyInfo, error) { + fs, err := NewFS(DefaultMountPoint) + if err != nil { + return nil, err + } + + return fs.NewBuddyInfo() +} + +// NewBuddyInfo reads the buddyinfo statistics from the specified `proc` filesystem. +func (fs FS) NewBuddyInfo() ([]BuddyInfo, error) { + file, err := os.Open(fs.Path("buddyinfo")) + if err != nil { + return nil, err + } + defer file.Close() + + return parseBuddyInfo(file) +} + +func parseBuddyInfo(r io.Reader) ([]BuddyInfo, error) { + var ( + buddyInfo = []BuddyInfo{} + scanner = bufio.NewScanner(r) + bucketCount = -1 + ) + + for scanner.Scan() { + var err error + line := scanner.Text() + parts := strings.Fields(line) + + if len(parts) < 4 { + return nil, fmt.Errorf("invalid number of fields when parsing buddyinfo") + } + + node := strings.TrimRight(parts[1], ",") + zone := strings.TrimRight(parts[3], ",") + arraySize := len(parts[4:]) + + if bucketCount == -1 { + bucketCount = arraySize + } else { + if bucketCount != arraySize { + return nil, fmt.Errorf("mismatch in number of buddyinfo buckets, previous count %d, new count %d", bucketCount, arraySize) + } + } + + sizes := make([]float64, arraySize) + for i := 0; i < arraySize; i++ { + sizes[i], err = strconv.ParseFloat(parts[i+4], 64) + if err != nil { + return nil, fmt.Errorf("invalid value in buddyinfo: %s", err) + } + } + + buddyInfo = append(buddyInfo, BuddyInfo{node, zone, sizes}) + } + + return buddyInfo, scanner.Err() +} diff --git a/vendor/github.com/prometheus/procfs/fixtures.ttar b/vendor/github.com/prometheus/procfs/fixtures.ttar new file mode 100644 index 0000000000..13c831ef59 --- /dev/null +++ b/vendor/github.com/prometheus/procfs/fixtures.ttar @@ -0,0 +1,462 @@ +# Archive created by ttar -c -f fixtures.ttar fixtures/ +Directory: fixtures +Mode: 755 +# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - +Directory: fixtures/26231 +Mode: 755 +# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - +Path: fixtures/26231/cmdline +Lines: 1 +vimNULLBYTEtest.goNULLBYTE+10NULLBYTEEOF +Mode: 644 +# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - +Path: fixtures/26231/comm +Lines: 1 +vim +Mode: 644 +# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - +Path: fixtures/26231/cwd +SymlinkTo: /usr/bin +# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - +Path: fixtures/26231/exe +SymlinkTo: /usr/bin/vim +# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - +Directory: fixtures/26231/fd +Mode: 755 +# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - +Path: fixtures/26231/fd/0 +SymlinkTo: ../../symlinktargets/abc +# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - +Path: fixtures/26231/fd/1 +SymlinkTo: ../../symlinktargets/def +# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - +Path: fixtures/26231/fd/10 +SymlinkTo: ../../symlinktargets/xyz +# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - +Path: fixtures/26231/fd/2 +SymlinkTo: ../../symlinktargets/ghi +# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - +Path: fixtures/26231/fd/3 +SymlinkTo: ../../symlinktargets/uvw +# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - +Path: fixtures/26231/io +Lines: 7 +rchar: 750339 +wchar: 818609 +syscr: 7405 +syscw: 5245 +read_bytes: 1024 +write_bytes: 2048 +cancelled_write_bytes: -1024 +Mode: 644 +# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - +Path: fixtures/26231/limits +Lines: 17 +Limit Soft Limit Hard Limit Units +Max cpu time unlimited unlimited seconds +Max file size unlimited unlimited bytes +Max data size unlimited unlimited bytes +Max stack size 8388608 unlimited bytes +Max core file size 0 unlimited bytes +Max resident set unlimited unlimited bytes +Max processes 62898 62898 processes +Max open files 2048 4096 files +Max locked memory 65536 65536 bytes +Max address space 8589934592 unlimited bytes +Max file locks unlimited unlimited locks +Max pending signals 62898 62898 signals +Max msgqueue size 819200 819200 bytes +Max nice priority 0 0 +Max realtime priority 0 0 +Max realtime timeout unlimited unlimited us +Mode: 644 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CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + package procfs import ( "fmt" "os" "path" + + "github.com/prometheus/procfs/nfs" + "github.com/prometheus/procfs/xfs" ) // FS represents the pseudo-filesystem proc, which provides an interface to @@ -31,3 +47,36 @@ func NewFS(mountPoint string) (FS, error) { func (fs FS) Path(p ...string) string { return path.Join(append([]string{string(fs)}, p...)...) } + +// XFSStats retrieves XFS filesystem runtime statistics. +func (fs FS) XFSStats() (*xfs.Stats, error) { + f, err := os.Open(fs.Path("fs/xfs/stat")) + if err != nil { + return nil, err + } + defer f.Close() + + return xfs.ParseStats(f) +} + +// NFSClientRPCStats retrieves NFS client RPC statistics. +func (fs FS) NFSClientRPCStats() (*nfs.ClientRPCStats, error) { + f, err := os.Open(fs.Path("net/rpc/nfs")) + if err != nil { + return nil, err + } + defer f.Close() + + return nfs.ParseClientRPCStats(f) +} + +// NFSdServerRPCStats retrieves NFS daemon RPC statistics. +func (fs FS) NFSdServerRPCStats() (*nfs.ServerRPCStats, error) { + f, err := os.Open(fs.Path("net/rpc/nfsd")) + if err != nil { + return nil, err + } + defer f.Close() + + return nfs.ParseServerRPCStats(f) +} diff --git a/vendor/github.com/prometheus/procfs/go.mod b/vendor/github.com/prometheus/procfs/go.mod new file mode 100644 index 0000000000..e89ee6c90f --- /dev/null +++ b/vendor/github.com/prometheus/procfs/go.mod @@ -0,0 +1 @@ +module github.com/prometheus/procfs diff --git a/vendor/github.com/prometheus/procfs/internal/util/parse.go b/vendor/github.com/prometheus/procfs/internal/util/parse.go new file mode 100644 index 0000000000..2ff228e9d1 --- /dev/null +++ b/vendor/github.com/prometheus/procfs/internal/util/parse.go @@ -0,0 +1,59 @@ +// Copyright 2018 The Prometheus Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package util + +import ( + "io/ioutil" + "strconv" + "strings" +) + +// ParseUint32s parses a slice of strings into a slice of uint32s. +func ParseUint32s(ss []string) ([]uint32, error) { + us := make([]uint32, 0, len(ss)) + for _, s := range ss { + u, err := strconv.ParseUint(s, 10, 32) + if err != nil { + return nil, err + } + + us = append(us, uint32(u)) + } + + return us, nil +} + +// ParseUint64s parses a slice of strings into a slice of uint64s. +func ParseUint64s(ss []string) ([]uint64, error) { + us := make([]uint64, 0, len(ss)) + for _, s := range ss { + u, err := strconv.ParseUint(s, 10, 64) + if err != nil { + return nil, err + } + + us = append(us, u) + } + + return us, nil +} + +// ReadUintFromFile reads a file and attempts to parse a uint64 from it. +func ReadUintFromFile(path string) (uint64, error) { + data, err := ioutil.ReadFile(path) + if err != nil { + return 0, err + } + return strconv.ParseUint(strings.TrimSpace(string(data)), 10, 64) +} diff --git a/vendor/github.com/prometheus/procfs/internal/util/sysreadfile_linux.go b/vendor/github.com/prometheus/procfs/internal/util/sysreadfile_linux.go new file mode 100644 index 0000000000..df0d567b78 --- /dev/null +++ b/vendor/github.com/prometheus/procfs/internal/util/sysreadfile_linux.go @@ -0,0 +1,45 @@ +// Copyright 2018 The Prometheus Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// +build !windows + +package util + +import ( + "bytes" + "os" + "syscall" +) + +// SysReadFile is a simplified ioutil.ReadFile that invokes syscall.Read directly. +// https://github.com/prometheus/node_exporter/pull/728/files +func SysReadFile(file string) (string, error) { + f, err := os.Open(file) + if err != nil { + return "", err + } + defer f.Close() + + // On some machines, hwmon drivers are broken and return EAGAIN. This causes + // Go's ioutil.ReadFile implementation to poll forever. + // + // Since we either want to read data or bail immediately, do the simplest + // possible read using syscall directly. + b := make([]byte, 128) + n, err := syscall.Read(int(f.Fd()), b) + if err != nil { + return "", err + } + + return string(bytes.TrimSpace(b[:n])), nil +} diff --git a/vendor/github.com/prometheus/procfs/ipvs.go b/vendor/github.com/prometheus/procfs/ipvs.go index e7012f7323..e36d4a3bd0 100644 --- a/vendor/github.com/prometheus/procfs/ipvs.go +++ b/vendor/github.com/prometheus/procfs/ipvs.go @@ -1,3 +1,16 @@ +// Copyright 2018 The Prometheus Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + package procfs import ( @@ -31,14 +44,16 @@ type IPVSStats struct { type IPVSBackendStatus struct { // The local (virtual) IP address. LocalAddress net.IP - // The local (virtual) port. - LocalPort uint16 - // The transport protocol (TCP, UDP). - Proto string // The remote (real) IP address. RemoteAddress net.IP + // The local (virtual) port. + LocalPort uint16 // The remote (real) port. RemotePort uint16 + // The local firewall mark + LocalMark string + // The transport protocol (TCP, UDP). + Proto string // The current number of active connections for this virtual/real address pair. ActiveConn uint64 // The current number of inactive connections for this virtual/real address pair. @@ -142,13 +157,14 @@ func parseIPVSBackendStatus(file io.Reader) ([]IPVSBackendStatus, error) { status []IPVSBackendStatus scanner = bufio.NewScanner(file) proto string + localMark string localAddress net.IP localPort uint16 err error ) for scanner.Scan() { - fields := strings.Fields(string(scanner.Text())) + fields := strings.Fields(scanner.Text()) if len(fields) == 0 { continue } @@ -160,10 +176,19 @@ func parseIPVSBackendStatus(file io.Reader) ([]IPVSBackendStatus, error) { continue } proto = fields[0] + localMark = "" localAddress, localPort, err = parseIPPort(fields[1]) if err != nil { return nil, err } + case fields[0] == "FWM": + if len(fields) < 2 { + continue + } + proto = fields[0] + localMark = fields[1] + localAddress = nil + localPort = 0 case fields[0] == "->": if len(fields) < 6 { continue @@ -187,6 +212,7 @@ func parseIPVSBackendStatus(file io.Reader) ([]IPVSBackendStatus, error) { status = append(status, IPVSBackendStatus{ LocalAddress: localAddress, LocalPort: localPort, + LocalMark: localMark, RemoteAddress: remoteAddress, RemotePort: remotePort, Proto: proto, @@ -200,22 +226,31 @@ func parseIPVSBackendStatus(file io.Reader) ([]IPVSBackendStatus, error) { } func parseIPPort(s string) (net.IP, uint16, error) { - tmp := strings.SplitN(s, ":", 2) - - if len(tmp) != 2 { - return nil, 0, fmt.Errorf("invalid IP:Port: %s", s) - } + var ( + ip net.IP + err error + ) - if len(tmp[0]) != 8 && len(tmp[0]) != 32 { - return nil, 0, fmt.Errorf("invalid IP: %s", tmp[0]) + switch len(s) { + case 13: + ip, err = hex.DecodeString(s[0:8]) + if err != nil { + return nil, 0, err + } + case 46: + ip = net.ParseIP(s[1:40]) + if ip == nil { + return nil, 0, fmt.Errorf("invalid IPv6 address: %s", s[1:40]) + } + default: + return nil, 0, fmt.Errorf("unexpected IP:Port: %s", s) } - ip, err := hex.DecodeString(tmp[0]) - if err != nil { - return nil, 0, err + portString := s[len(s)-4:] + if len(portString) != 4 { + return nil, 0, fmt.Errorf("unexpected port string format: %s", portString) } - - port, err := strconv.ParseUint(tmp[1], 16, 16) + port, err := strconv.ParseUint(portString, 16, 16) if err != nil { return nil, 0, err } diff --git a/vendor/github.com/prometheus/procfs/mdstat.go b/vendor/github.com/prometheus/procfs/mdstat.go index d7a248c0df..9dc19583d8 100644 --- a/vendor/github.com/prometheus/procfs/mdstat.go +++ b/vendor/github.com/prometheus/procfs/mdstat.go @@ -1,3 +1,16 @@ +// Copyright 2018 The Prometheus Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + package procfs import ( diff --git a/vendor/github.com/prometheus/procfs/mountstats.go b/vendor/github.com/prometheus/procfs/mountstats.go new file mode 100644 index 0000000000..7a8a1e0990 --- /dev/null +++ b/vendor/github.com/prometheus/procfs/mountstats.go @@ -0,0 +1,606 @@ +// Copyright 2018 The Prometheus Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package procfs + +// While implementing parsing of /proc/[pid]/mountstats, this blog was used +// heavily as a reference: +// https://utcc.utoronto.ca/~cks/space/blog/linux/NFSMountstatsIndex +// +// Special thanks to Chris Siebenmann for all of his posts explaining the +// various statistics available for NFS. + +import ( + "bufio" + "fmt" + "io" + "strconv" + "strings" + "time" +) + +// Constants shared between multiple functions. +const ( + deviceEntryLen = 8 + + fieldBytesLen = 8 + fieldEventsLen = 27 + + statVersion10 = "1.0" + statVersion11 = "1.1" + + fieldTransport10TCPLen = 10 + fieldTransport10UDPLen = 7 + + fieldTransport11TCPLen = 13 + fieldTransport11UDPLen = 10 +) + +// A Mount is a device mount parsed from /proc/[pid]/mountstats. +type Mount struct { + // Name of the device. + Device string + // The mount point of the device. + Mount string + // The filesystem type used by the device. + Type string + // If available additional statistics related to this Mount. + // Use a type assertion to determine if additional statistics are available. + Stats MountStats +} + +// A MountStats is a type which contains detailed statistics for a specific +// type of Mount. +type MountStats interface { + mountStats() +} + +// A MountStatsNFS is a MountStats implementation for NFSv3 and v4 mounts. +type MountStatsNFS struct { + // The version of statistics provided. + StatVersion string + // The age of the NFS mount. + Age time.Duration + // Statistics related to byte counters for various operations. + Bytes NFSBytesStats + // Statistics related to various NFS event occurrences. + Events NFSEventsStats + // Statistics broken down by filesystem operation. + Operations []NFSOperationStats + // Statistics about the NFS RPC transport. + Transport NFSTransportStats +} + +// mountStats implements MountStats. +func (m MountStatsNFS) mountStats() {} + +// A NFSBytesStats contains statistics about the number of bytes read and written +// by an NFS client to and from an NFS server. +type NFSBytesStats struct { + // Number of bytes read using the read() syscall. + Read uint64 + // Number of bytes written using the write() syscall. + Write uint64 + // Number of bytes read using the read() syscall in O_DIRECT mode. + DirectRead uint64 + // Number of bytes written using the write() syscall in O_DIRECT mode. + DirectWrite uint64 + // Number of bytes read from the NFS server, in total. + ReadTotal uint64 + // Number of bytes written to the NFS server, in total. + WriteTotal uint64 + // Number of pages read directly via mmap()'d files. + ReadPages uint64 + // Number of pages written directly via mmap()'d files. + WritePages uint64 +} + +// A NFSEventsStats contains statistics about NFS event occurrences. +type NFSEventsStats struct { + // Number of times cached inode attributes are re-validated from the server. + InodeRevalidate uint64 + // Number of times cached dentry nodes are re-validated from the server. + DnodeRevalidate uint64 + // Number of times an inode cache is cleared. + DataInvalidate uint64 + // Number of times cached inode attributes are invalidated. + AttributeInvalidate uint64 + // Number of times files or directories have been open()'d. + VFSOpen uint64 + // Number of times a directory lookup has occurred. + VFSLookup uint64 + // Number of times permissions have been checked. + VFSAccess uint64 + // Number of updates (and potential writes) to pages. + VFSUpdatePage uint64 + // Number of pages read directly via mmap()'d files. + VFSReadPage uint64 + // Number of times a group of pages have been read. + VFSReadPages uint64 + // Number of pages written directly via mmap()'d files. + VFSWritePage uint64 + // Number of times a group of pages have been written. + VFSWritePages uint64 + // Number of times directory entries have been read with getdents(). + VFSGetdents uint64 + // Number of times attributes have been set on inodes. + VFSSetattr uint64 + // Number of pending writes that have been forcefully flushed to the server. + VFSFlush uint64 + // Number of times fsync() has been called on directories and files. + VFSFsync uint64 + // Number of times locking has been attempted on a file. + VFSLock uint64 + // Number of times files have been closed and released. + VFSFileRelease uint64 + // Unknown. Possibly unused. + CongestionWait uint64 + // Number of times files have been truncated. + Truncation uint64 + // Number of times a file has been grown due to writes beyond its existing end. + WriteExtension uint64 + // Number of times a file was removed while still open by another process. + SillyRename uint64 + // Number of times the NFS server gave less data than expected while reading. + ShortRead uint64 + // Number of times the NFS server wrote less data than expected while writing. + ShortWrite uint64 + // Number of times the NFS server indicated EJUKEBOX; retrieving data from + // offline storage. + JukeboxDelay uint64 + // Number of NFS v4.1+ pNFS reads. + PNFSRead uint64 + // Number of NFS v4.1+ pNFS writes. + PNFSWrite uint64 +} + +// A NFSOperationStats contains statistics for a single operation. +type NFSOperationStats struct { + // The name of the operation. + Operation string + // Number of requests performed for this operation. + Requests uint64 + // Number of times an actual RPC request has been transmitted for this operation. + Transmissions uint64 + // Number of times a request has had a major timeout. + MajorTimeouts uint64 + // Number of bytes sent for this operation, including RPC headers and payload. + BytesSent uint64 + // Number of bytes received for this operation, including RPC headers and payload. + BytesReceived uint64 + // Duration all requests spent queued for transmission before they were sent. + CumulativeQueueTime time.Duration + // Duration it took to get a reply back after the request was transmitted. + CumulativeTotalResponseTime time.Duration + // Duration from when a request was enqueued to when it was completely handled. + CumulativeTotalRequestTime time.Duration +} + +// A NFSTransportStats contains statistics for the NFS mount RPC requests and +// responses. +type NFSTransportStats struct { + // The transport protocol used for the NFS mount. + Protocol string + // The local port used for the NFS mount. + Port uint64 + // Number of times the client has had to establish a connection from scratch + // to the NFS server. + Bind uint64 + // Number of times the client has made a TCP connection to the NFS server. + Connect uint64 + // Duration (in jiffies, a kernel internal unit of time) the NFS mount has + // spent waiting for connections to the server to be established. + ConnectIdleTime uint64 + // Duration since the NFS mount last saw any RPC traffic. + IdleTime time.Duration + // Number of RPC requests for this mount sent to the NFS server. + Sends uint64 + // Number of RPC responses for this mount received from the NFS server. + Receives uint64 + // Number of times the NFS server sent a response with a transaction ID + // unknown to this client. + BadTransactionIDs uint64 + // A running counter, incremented on each request as the current difference + // ebetween sends and receives. + CumulativeActiveRequests uint64 + // A running counter, incremented on each request by the current backlog + // queue size. + CumulativeBacklog uint64 + + // Stats below only available with stat version 1.1. + + // Maximum number of simultaneously active RPC requests ever used. + MaximumRPCSlotsUsed uint64 + // A running counter, incremented on each request as the current size of the + // sending queue. + CumulativeSendingQueue uint64 + // A running counter, incremented on each request as the current size of the + // pending queue. + CumulativePendingQueue uint64 +} + +// parseMountStats parses a /proc/[pid]/mountstats file and returns a slice +// of Mount structures containing detailed information about each mount. +// If available, statistics for each mount are parsed as well. +func parseMountStats(r io.Reader) ([]*Mount, error) { + const ( + device = "device" + statVersionPrefix = "statvers=" + + nfs3Type = "nfs" + nfs4Type = "nfs4" + ) + + var mounts []*Mount + + s := bufio.NewScanner(r) + for s.Scan() { + // Only look for device entries in this function + ss := strings.Fields(string(s.Bytes())) + if len(ss) == 0 || ss[0] != device { + continue + } + + m, err := parseMount(ss) + if err != nil { + return nil, err + } + + // Does this mount also possess statistics information? + if len(ss) > deviceEntryLen { + // Only NFSv3 and v4 are supported for parsing statistics + if m.Type != nfs3Type && m.Type != nfs4Type { + return nil, fmt.Errorf("cannot parse MountStats for fstype %q", m.Type) + } + + statVersion := strings.TrimPrefix(ss[8], statVersionPrefix) + + stats, err := parseMountStatsNFS(s, statVersion) + if err != nil { + return nil, err + } + + m.Stats = stats + } + + mounts = append(mounts, m) + } + + return mounts, s.Err() +} + +// parseMount parses an entry in /proc/[pid]/mountstats in the format: +// device [device] mounted on [mount] with fstype [type] +func parseMount(ss []string) (*Mount, error) { + if len(ss) < deviceEntryLen { + return nil, fmt.Errorf("invalid device entry: %v", ss) + } + + // Check for specific words appearing at specific indices to ensure + // the format is consistent with what we expect + format := []struct { + i int + s string + }{ + {i: 0, s: "device"}, + {i: 2, s: "mounted"}, + {i: 3, s: "on"}, + {i: 5, s: "with"}, + {i: 6, s: "fstype"}, + } + + for _, f := range format { + if ss[f.i] != f.s { + return nil, fmt.Errorf("invalid device entry: %v", ss) + } + } + + return &Mount{ + Device: ss[1], + Mount: ss[4], + Type: ss[7], + }, nil +} + +// parseMountStatsNFS parses a MountStatsNFS by scanning additional information +// related to NFS statistics. +func parseMountStatsNFS(s *bufio.Scanner, statVersion string) (*MountStatsNFS, error) { + // Field indicators for parsing specific types of data + const ( + fieldAge = "age:" + fieldBytes = "bytes:" + fieldEvents = "events:" + fieldPerOpStats = "per-op" + fieldTransport = "xprt:" + ) + + stats := &MountStatsNFS{ + StatVersion: statVersion, + } + + for s.Scan() { + ss := strings.Fields(string(s.Bytes())) + if len(ss) == 0 { + break + } + if len(ss) < 2 { + return nil, fmt.Errorf("not enough information for NFS stats: %v", ss) + } + + switch ss[0] { + case fieldAge: + // Age integer is in seconds + d, err := time.ParseDuration(ss[1] + "s") + if err != nil { + return nil, err + } + + stats.Age = d + case fieldBytes: + bstats, err := parseNFSBytesStats(ss[1:]) + if err != nil { + return nil, err + } + + stats.Bytes = *bstats + case fieldEvents: + estats, err := parseNFSEventsStats(ss[1:]) + if err != nil { + return nil, err + } + + stats.Events = *estats + case fieldTransport: + if len(ss) < 3 { + return nil, fmt.Errorf("not enough information for NFS transport stats: %v", ss) + } + + tstats, err := parseNFSTransportStats(ss[1:], statVersion) + if err != nil { + return nil, err + } + + stats.Transport = *tstats + } + + // When encountering "per-operation statistics", we must break this + // loop and parse them separately to ensure we can terminate parsing + // before reaching another device entry; hence why this 'if' statement + // is not just another switch case + if ss[0] == fieldPerOpStats { + break + } + } + + if err := s.Err(); err != nil { + return nil, err + } + + // NFS per-operation stats appear last before the next device entry + perOpStats, err := parseNFSOperationStats(s) + if err != nil { + return nil, err + } + + stats.Operations = perOpStats + + return stats, nil +} + +// parseNFSBytesStats parses a NFSBytesStats line using an input set of +// integer fields. +func parseNFSBytesStats(ss []string) (*NFSBytesStats, error) { + if len(ss) != fieldBytesLen { + return nil, fmt.Errorf("invalid NFS bytes stats: %v", ss) + } + + ns := make([]uint64, 0, fieldBytesLen) + for _, s := range ss { + n, err := strconv.ParseUint(s, 10, 64) + if err != nil { + return nil, err + } + + ns = append(ns, n) + } + + return &NFSBytesStats{ + Read: ns[0], + Write: ns[1], + DirectRead: ns[2], + DirectWrite: ns[3], + ReadTotal: ns[4], + WriteTotal: ns[5], + ReadPages: ns[6], + WritePages: ns[7], + }, nil +} + +// parseNFSEventsStats parses a NFSEventsStats line using an input set of +// integer fields. +func parseNFSEventsStats(ss []string) (*NFSEventsStats, error) { + if len(ss) != fieldEventsLen { + return nil, fmt.Errorf("invalid NFS events stats: %v", ss) + } + + ns := make([]uint64, 0, fieldEventsLen) + for _, s := range ss { + n, err := strconv.ParseUint(s, 10, 64) + if err != nil { + return nil, err + } + + ns = append(ns, n) + } + + return &NFSEventsStats{ + InodeRevalidate: ns[0], + DnodeRevalidate: ns[1], + DataInvalidate: ns[2], + AttributeInvalidate: ns[3], + VFSOpen: ns[4], + VFSLookup: ns[5], + VFSAccess: ns[6], + VFSUpdatePage: ns[7], + VFSReadPage: ns[8], + VFSReadPages: ns[9], + VFSWritePage: ns[10], + VFSWritePages: ns[11], + VFSGetdents: ns[12], + VFSSetattr: ns[13], + VFSFlush: ns[14], + VFSFsync: ns[15], + VFSLock: ns[16], + VFSFileRelease: ns[17], + CongestionWait: ns[18], + Truncation: ns[19], + WriteExtension: ns[20], + SillyRename: ns[21], + ShortRead: ns[22], + ShortWrite: ns[23], + JukeboxDelay: ns[24], + PNFSRead: ns[25], + PNFSWrite: ns[26], + }, nil +} + +// parseNFSOperationStats parses a slice of NFSOperationStats by scanning +// additional information about per-operation statistics until an empty +// line is reached. +func parseNFSOperationStats(s *bufio.Scanner) ([]NFSOperationStats, error) { + const ( + // Number of expected fields in each per-operation statistics set + numFields = 9 + ) + + var ops []NFSOperationStats + + for s.Scan() { + ss := strings.Fields(string(s.Bytes())) + if len(ss) == 0 { + // Must break when reading a blank line after per-operation stats to + // enable top-level function to parse the next device entry + break + } + + if len(ss) != numFields { + return nil, fmt.Errorf("invalid NFS per-operations stats: %v", ss) + } + + // Skip string operation name for integers + ns := make([]uint64, 0, numFields-1) + for _, st := range ss[1:] { + n, err := strconv.ParseUint(st, 10, 64) + if err != nil { + return nil, err + } + + ns = append(ns, n) + } + + ops = append(ops, NFSOperationStats{ + Operation: strings.TrimSuffix(ss[0], ":"), + Requests: ns[0], + Transmissions: ns[1], + MajorTimeouts: ns[2], + BytesSent: ns[3], + BytesReceived: ns[4], + CumulativeQueueTime: time.Duration(ns[5]) * time.Millisecond, + CumulativeTotalResponseTime: time.Duration(ns[6]) * time.Millisecond, + CumulativeTotalRequestTime: time.Duration(ns[7]) * time.Millisecond, + }) + } + + return ops, s.Err() +} + +// parseNFSTransportStats parses a NFSTransportStats line using an input set of +// integer fields matched to a specific stats version. +func parseNFSTransportStats(ss []string, statVersion string) (*NFSTransportStats, error) { + // Extract the protocol field. It is the only string value in the line + protocol := ss[0] + ss = ss[1:] + + switch statVersion { + case statVersion10: + var expectedLength int + if protocol == "tcp" { + expectedLength = fieldTransport10TCPLen + } else if protocol == "udp" { + expectedLength = fieldTransport10UDPLen + } else { + return nil, fmt.Errorf("invalid NFS protocol \"%s\" in stats 1.0 statement: %v", protocol, ss) + } + if len(ss) != expectedLength { + return nil, fmt.Errorf("invalid NFS transport stats 1.0 statement: %v", ss) + } + case statVersion11: + var expectedLength int + if protocol == "tcp" { + expectedLength = fieldTransport11TCPLen + } else if protocol == "udp" { + expectedLength = fieldTransport11UDPLen + } else { + return nil, fmt.Errorf("invalid NFS protocol \"%s\" in stats 1.1 statement: %v", protocol, ss) + } + if len(ss) != expectedLength { + return nil, fmt.Errorf("invalid NFS transport stats 1.1 statement: %v", ss) + } + default: + return nil, fmt.Errorf("unrecognized NFS transport stats version: %q", statVersion) + } + + // Allocate enough for v1.1 stats since zero value for v1.1 stats will be okay + // in a v1.0 response. Since the stat length is bigger for TCP stats, we use + // the TCP length here. + // + // Note: slice length must be set to length of v1.1 stats to avoid a panic when + // only v1.0 stats are present. + // See: https://github.com/prometheus/node_exporter/issues/571. + ns := make([]uint64, fieldTransport11TCPLen) + for i, s := range ss { + n, err := strconv.ParseUint(s, 10, 64) + if err != nil { + return nil, err + } + + ns[i] = n + } + + // The fields differ depending on the transport protocol (TCP or UDP) + // From https://utcc.utoronto.ca/%7Ecks/space/blog/linux/NFSMountstatsXprt + // + // For the udp RPC transport there is no connection count, connect idle time, + // or idle time (fields #3, #4, and #5); all other fields are the same. So + // we set them to 0 here. + if protocol == "udp" { + ns = append(ns[:2], append(make([]uint64, 3), ns[2:]...)...) + } + + return &NFSTransportStats{ + Protocol: protocol, + Port: ns[0], + Bind: ns[1], + Connect: ns[2], + ConnectIdleTime: ns[3], + IdleTime: time.Duration(ns[4]) * time.Second, + Sends: ns[5], + Receives: ns[6], + BadTransactionIDs: ns[7], + CumulativeActiveRequests: ns[8], + CumulativeBacklog: ns[9], + MaximumRPCSlotsUsed: ns[10], + CumulativeSendingQueue: ns[11], + CumulativePendingQueue: ns[12], + }, nil +} diff --git a/vendor/github.com/prometheus/procfs/net_dev.go b/vendor/github.com/prometheus/procfs/net_dev.go new file mode 100644 index 0000000000..3f2523371a --- /dev/null +++ b/vendor/github.com/prometheus/procfs/net_dev.go @@ -0,0 +1,216 @@ +// Copyright 2018 The Prometheus Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package procfs + +import ( + "bufio" + "errors" + "os" + "sort" + "strconv" + "strings" +) + +// NetDevLine is single line parsed from /proc/net/dev or /proc/[pid]/net/dev. +type NetDevLine struct { + Name string `json:"name"` // The name of the interface. + RxBytes uint64 `json:"rx_bytes"` // Cumulative count of bytes received. + RxPackets uint64 `json:"rx_packets"` // Cumulative count of packets received. + RxErrors uint64 `json:"rx_errors"` // Cumulative count of receive errors encountered. + RxDropped uint64 `json:"rx_dropped"` // Cumulative count of packets dropped while receiving. + RxFIFO uint64 `json:"rx_fifo"` // Cumulative count of FIFO buffer errors. + RxFrame uint64 `json:"rx_frame"` // Cumulative count of packet framing errors. + RxCompressed uint64 `json:"rx_compressed"` // Cumulative count of compressed packets received by the device driver. + RxMulticast uint64 `json:"rx_multicast"` // Cumulative count of multicast frames received by the device driver. + TxBytes uint64 `json:"tx_bytes"` // Cumulative count of bytes transmitted. + TxPackets uint64 `json:"tx_packets"` // Cumulative count of packets transmitted. + TxErrors uint64 `json:"tx_errors"` // Cumulative count of transmit errors encountered. + TxDropped uint64 `json:"tx_dropped"` // Cumulative count of packets dropped while transmitting. + TxFIFO uint64 `json:"tx_fifo"` // Cumulative count of FIFO buffer errors. + TxCollisions uint64 `json:"tx_collisions"` // Cumulative count of collisions detected on the interface. + TxCarrier uint64 `json:"tx_carrier"` // Cumulative count of carrier losses detected by the device driver. + TxCompressed uint64 `json:"tx_compressed"` // Cumulative count of compressed packets transmitted by the device driver. +} + +// NetDev is parsed from /proc/net/dev or /proc/[pid]/net/dev. The map keys +// are interface names. +type NetDev map[string]NetDevLine + +// NewNetDev returns kernel/system statistics read from /proc/net/dev. +func NewNetDev() (NetDev, error) { + fs, err := NewFS(DefaultMountPoint) + if err != nil { + return nil, err + } + + return fs.NewNetDev() +} + +// NewNetDev returns kernel/system statistics read from /proc/net/dev. +func (fs FS) NewNetDev() (NetDev, error) { + return newNetDev(fs.Path("net/dev")) +} + +// NewNetDev returns kernel/system statistics read from /proc/[pid]/net/dev. +func (p Proc) NewNetDev() (NetDev, error) { + return newNetDev(p.path("net/dev")) +} + +// newNetDev creates a new NetDev from the contents of the given file. +func newNetDev(file string) (NetDev, error) { + f, err := os.Open(file) + if err != nil { + return NetDev{}, err + } + defer f.Close() + + nd := NetDev{} + s := bufio.NewScanner(f) + for n := 0; s.Scan(); n++ { + // Skip the 2 header lines. + if n < 2 { + continue + } + + line, err := nd.parseLine(s.Text()) + if err != nil { + return nd, err + } + + nd[line.Name] = *line + } + + return nd, s.Err() +} + +// parseLine parses a single line from the /proc/net/dev file. Header lines +// must be filtered prior to calling this method. +func (nd NetDev) parseLine(rawLine string) (*NetDevLine, error) { + parts := strings.SplitN(rawLine, ":", 2) + if len(parts) != 2 { + return nil, errors.New("invalid net/dev line, missing colon") + } + fields := strings.Fields(strings.TrimSpace(parts[1])) + + var err error + line := &NetDevLine{} + + // Interface Name + line.Name = strings.TrimSpace(parts[0]) + if line.Name == "" { + return nil, errors.New("invalid net/dev line, empty interface name") + } + + // RX + line.RxBytes, err = strconv.ParseUint(fields[0], 10, 64) + if err != nil { + return nil, err + } + line.RxPackets, err = strconv.ParseUint(fields[1], 10, 64) + if err != nil { + return nil, err + } + line.RxErrors, err = strconv.ParseUint(fields[2], 10, 64) + if err != nil { + return nil, err + } + line.RxDropped, err = strconv.ParseUint(fields[3], 10, 64) + if err != nil { + return nil, err + } + line.RxFIFO, err = strconv.ParseUint(fields[4], 10, 64) + if err != nil { + return nil, err + } + line.RxFrame, err = strconv.ParseUint(fields[5], 10, 64) + if err != nil { + return nil, err + } + line.RxCompressed, err = strconv.ParseUint(fields[6], 10, 64) + if err != nil { + return nil, err + } + line.RxMulticast, err = strconv.ParseUint(fields[7], 10, 64) + if err != nil { + return nil, err + } + + // TX + line.TxBytes, err = strconv.ParseUint(fields[8], 10, 64) + if err != nil { + return nil, err + } + line.TxPackets, err = strconv.ParseUint(fields[9], 10, 64) + if err != nil { + return nil, err + } + line.TxErrors, err = strconv.ParseUint(fields[10], 10, 64) + if err != nil { + return nil, err + } + line.TxDropped, err = strconv.ParseUint(fields[11], 10, 64) + if err != nil { + return nil, err + } + line.TxFIFO, err = strconv.ParseUint(fields[12], 10, 64) + if err != nil { + return nil, err + } + line.TxCollisions, err = strconv.ParseUint(fields[13], 10, 64) + if err != nil { + return nil, err + } + line.TxCarrier, err = strconv.ParseUint(fields[14], 10, 64) + if err != nil { + return nil, err + } + line.TxCompressed, err = strconv.ParseUint(fields[15], 10, 64) + if err != nil { + return nil, err + } + + return line, nil +} + +// Total aggregates the values across interfaces and returns a new NetDevLine. +// The Name field will be a sorted comma separated list of interface names. +func (nd NetDev) Total() NetDevLine { + total := NetDevLine{} + + names := make([]string, 0, len(nd)) + for _, ifc := range nd { + names = append(names, ifc.Name) + total.RxBytes += ifc.RxBytes + total.RxPackets += ifc.RxPackets + total.RxPackets += ifc.RxPackets + total.RxErrors += ifc.RxErrors + total.RxDropped += ifc.RxDropped + total.RxFIFO += ifc.RxFIFO + total.RxFrame += ifc.RxFrame + total.RxCompressed += ifc.RxCompressed + total.RxMulticast += ifc.RxMulticast + total.TxBytes += ifc.TxBytes + total.TxPackets += ifc.TxPackets + total.TxErrors += ifc.TxErrors + total.TxDropped += ifc.TxDropped + total.TxFIFO += ifc.TxFIFO + total.TxCollisions += ifc.TxCollisions + total.TxCarrier += ifc.TxCarrier + total.TxCompressed += ifc.TxCompressed + } + sort.Strings(names) + total.Name = strings.Join(names, ", ") + + return total +} diff --git a/vendor/github.com/prometheus/procfs/nfs/nfs.go b/vendor/github.com/prometheus/procfs/nfs/nfs.go new file mode 100644 index 0000000000..651bf68195 --- /dev/null +++ b/vendor/github.com/prometheus/procfs/nfs/nfs.go @@ -0,0 +1,263 @@ +// Copyright 2018 The Prometheus Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Package nfs implements parsing of /proc/net/rpc/nfsd. +// Fields are documented in https://www.svennd.be/nfsd-stats-explained-procnetrpcnfsd/ +package nfs + +// ReplyCache models the "rc" line. +type ReplyCache struct { + Hits uint64 + Misses uint64 + NoCache uint64 +} + +// FileHandles models the "fh" line. +type FileHandles struct { + Stale uint64 + TotalLookups uint64 + AnonLookups uint64 + DirNoCache uint64 + NoDirNoCache uint64 +} + +// InputOutput models the "io" line. +type InputOutput struct { + Read uint64 + Write uint64 +} + +// Threads models the "th" line. +type Threads struct { + Threads uint64 + FullCnt uint64 +} + +// ReadAheadCache models the "ra" line. +type ReadAheadCache struct { + CacheSize uint64 + CacheHistogram []uint64 + NotFound uint64 +} + +// Network models the "net" line. +type Network struct { + NetCount uint64 + UDPCount uint64 + TCPCount uint64 + TCPConnect uint64 +} + +// ClientRPC models the nfs "rpc" line. +type ClientRPC struct { + RPCCount uint64 + Retransmissions uint64 + AuthRefreshes uint64 +} + +// ServerRPC models the nfsd "rpc" line. +type ServerRPC struct { + RPCCount uint64 + BadCnt uint64 + BadFmt uint64 + BadAuth uint64 + BadcInt uint64 +} + +// V2Stats models the "proc2" line. +type V2Stats struct { + Null uint64 + GetAttr uint64 + SetAttr uint64 + Root uint64 + Lookup uint64 + ReadLink uint64 + Read uint64 + WrCache uint64 + Write uint64 + Create uint64 + Remove uint64 + Rename uint64 + Link uint64 + SymLink uint64 + MkDir uint64 + RmDir uint64 + ReadDir uint64 + FsStat uint64 +} + +// V3Stats models the "proc3" line. +type V3Stats struct { + Null uint64 + GetAttr uint64 + SetAttr uint64 + Lookup uint64 + Access uint64 + ReadLink uint64 + Read uint64 + Write uint64 + Create uint64 + MkDir uint64 + SymLink uint64 + MkNod uint64 + Remove uint64 + RmDir uint64 + Rename uint64 + Link uint64 + ReadDir uint64 + ReadDirPlus uint64 + FsStat uint64 + FsInfo uint64 + PathConf uint64 + Commit uint64 +} + +// ClientV4Stats models the nfs "proc4" line. +type ClientV4Stats struct { + Null uint64 + Read uint64 + Write uint64 + Commit uint64 + Open uint64 + OpenConfirm uint64 + OpenNoattr uint64 + OpenDowngrade uint64 + Close uint64 + Setattr uint64 + FsInfo uint64 + Renew uint64 + SetClientID uint64 + SetClientIDConfirm uint64 + Lock uint64 + Lockt uint64 + Locku uint64 + Access uint64 + Getattr uint64 + Lookup uint64 + LookupRoot uint64 + Remove uint64 + Rename uint64 + Link uint64 + Symlink uint64 + Create uint64 + Pathconf uint64 + StatFs uint64 + ReadLink uint64 + ReadDir uint64 + ServerCaps uint64 + DelegReturn uint64 + GetACL uint64 + SetACL uint64 + FsLocations uint64 + ReleaseLockowner uint64 + Secinfo uint64 + FsidPresent uint64 + ExchangeID uint64 + CreateSession uint64 + DestroySession uint64 + Sequence uint64 + GetLeaseTime uint64 + ReclaimComplete uint64 + LayoutGet uint64 + GetDeviceInfo uint64 + LayoutCommit uint64 + LayoutReturn uint64 + SecinfoNoName uint64 + TestStateID uint64 + FreeStateID uint64 + GetDeviceList uint64 + BindConnToSession uint64 + DestroyClientID uint64 + Seek uint64 + Allocate uint64 + DeAllocate uint64 + LayoutStats uint64 + Clone uint64 +} + +// ServerV4Stats models the nfsd "proc4" line. +type ServerV4Stats struct { + Null uint64 + Compound uint64 +} + +// V4Ops models the "proc4ops" line: NFSv4 operations +// Variable list, see: +// v4.0 https://tools.ietf.org/html/rfc3010 (38 operations) +// v4.1 https://tools.ietf.org/html/rfc5661 (58 operations) +// v4.2 https://tools.ietf.org/html/draft-ietf-nfsv4-minorversion2-41 (71 operations) +type V4Ops struct { + //Values uint64 // Variable depending on v4.x sub-version. TODO: Will this always at least include the fields in this struct? + Op0Unused uint64 + Op1Unused uint64 + Op2Future uint64 + Access uint64 + Close uint64 + Commit uint64 + Create uint64 + DelegPurge uint64 + DelegReturn uint64 + GetAttr uint64 + GetFH uint64 + Link uint64 + Lock uint64 + Lockt uint64 + Locku uint64 + Lookup uint64 + LookupRoot uint64 + Nverify uint64 + Open uint64 + OpenAttr uint64 + OpenConfirm uint64 + OpenDgrd uint64 + PutFH uint64 + PutPubFH uint64 + PutRootFH uint64 + Read uint64 + ReadDir uint64 + ReadLink uint64 + Remove uint64 + Rename uint64 + Renew uint64 + RestoreFH uint64 + SaveFH uint64 + SecInfo uint64 + SetAttr uint64 + Verify uint64 + Write uint64 + RelLockOwner uint64 +} + +// ClientRPCStats models all stats from /proc/net/rpc/nfs. +type ClientRPCStats struct { + Network Network + ClientRPC ClientRPC + V2Stats V2Stats + V3Stats V3Stats + ClientV4Stats ClientV4Stats +} + +// ServerRPCStats models all stats from /proc/net/rpc/nfsd. +type ServerRPCStats struct { + ReplyCache ReplyCache + FileHandles FileHandles + InputOutput InputOutput + Threads Threads + ReadAheadCache ReadAheadCache + Network Network + ServerRPC ServerRPC + V2Stats V2Stats + V3Stats V3Stats + ServerV4Stats ServerV4Stats + V4Ops V4Ops +} diff --git a/vendor/github.com/prometheus/procfs/nfs/parse.go b/vendor/github.com/prometheus/procfs/nfs/parse.go new file mode 100644 index 0000000000..95a83cc5bc --- /dev/null +++ b/vendor/github.com/prometheus/procfs/nfs/parse.go @@ -0,0 +1,317 @@ +// Copyright 2018 The Prometheus Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package nfs + +import ( + "fmt" +) + +func parseReplyCache(v []uint64) (ReplyCache, error) { + if len(v) != 3 { + return ReplyCache{}, fmt.Errorf("invalid ReplyCache line %q", v) + } + + return ReplyCache{ + Hits: v[0], + Misses: v[1], + NoCache: v[2], + }, nil +} + +func parseFileHandles(v []uint64) (FileHandles, error) { + if len(v) != 5 { + return FileHandles{}, fmt.Errorf("invalid FileHandles, line %q", v) + } + + return FileHandles{ + Stale: v[0], + TotalLookups: v[1], + AnonLookups: v[2], + DirNoCache: v[3], + NoDirNoCache: v[4], + }, nil +} + +func parseInputOutput(v []uint64) (InputOutput, error) { + if len(v) != 2 { + return InputOutput{}, fmt.Errorf("invalid InputOutput line %q", v) + } + + return InputOutput{ + Read: v[0], + Write: v[1], + }, nil +} + +func parseThreads(v []uint64) (Threads, error) { + if len(v) != 2 { + return Threads{}, fmt.Errorf("invalid Threads line %q", v) + } + + return Threads{ + Threads: v[0], + FullCnt: v[1], + }, nil +} + +func parseReadAheadCache(v []uint64) (ReadAheadCache, error) { + if len(v) != 12 { + return ReadAheadCache{}, fmt.Errorf("invalid ReadAheadCache line %q", v) + } + + return ReadAheadCache{ + CacheSize: v[0], + CacheHistogram: v[1:11], + NotFound: v[11], + }, nil +} + +func parseNetwork(v []uint64) (Network, error) { + if len(v) != 4 { + return Network{}, fmt.Errorf("invalid Network line %q", v) + } + + return Network{ + NetCount: v[0], + UDPCount: v[1], + TCPCount: v[2], + TCPConnect: v[3], + }, nil +} + +func parseServerRPC(v []uint64) (ServerRPC, error) { + if len(v) != 5 { + return ServerRPC{}, fmt.Errorf("invalid RPC line %q", v) + } + + return ServerRPC{ + RPCCount: v[0], + BadCnt: v[1], + BadFmt: v[2], + BadAuth: v[3], + BadcInt: v[4], + }, nil +} + +func parseClientRPC(v []uint64) (ClientRPC, error) { + if len(v) != 3 { + return ClientRPC{}, fmt.Errorf("invalid RPC line %q", v) + } + + return ClientRPC{ + RPCCount: v[0], + Retransmissions: v[1], + AuthRefreshes: v[2], + }, nil +} + +func parseV2Stats(v []uint64) (V2Stats, error) { + values := int(v[0]) + if len(v[1:]) != values || values != 18 { + return V2Stats{}, fmt.Errorf("invalid V2Stats line %q", v) + } + + return V2Stats{ + Null: v[1], + GetAttr: v[2], + SetAttr: v[3], + Root: v[4], + Lookup: v[5], + ReadLink: v[6], + Read: v[7], + WrCache: v[8], + Write: v[9], + Create: v[10], + Remove: v[11], + Rename: v[12], + Link: v[13], + SymLink: v[14], + MkDir: v[15], + RmDir: v[16], + ReadDir: v[17], + FsStat: v[18], + }, nil +} + +func parseV3Stats(v []uint64) (V3Stats, error) { + values := int(v[0]) + if len(v[1:]) != values || values != 22 { + return V3Stats{}, fmt.Errorf("invalid V3Stats line %q", v) + } + + return V3Stats{ + Null: v[1], + GetAttr: v[2], + SetAttr: v[3], + Lookup: v[4], + Access: v[5], + ReadLink: v[6], + Read: v[7], + Write: v[8], + Create: v[9], + MkDir: v[10], + SymLink: v[11], + MkNod: v[12], + Remove: v[13], + RmDir: v[14], + Rename: v[15], + Link: v[16], + ReadDir: v[17], + ReadDirPlus: v[18], + FsStat: v[19], + FsInfo: v[20], + PathConf: v[21], + Commit: v[22], + }, nil +} + +func parseClientV4Stats(v []uint64) (ClientV4Stats, error) { + values := int(v[0]) + if len(v[1:]) != values { + return ClientV4Stats{}, fmt.Errorf("invalid ClientV4Stats line %q", v) + } + + // This function currently supports mapping 59 NFS v4 client stats. Older + // kernels may emit fewer stats, so we must detect this and pad out the + // values to match the expected slice size. + if values < 59 { + newValues := make([]uint64, 60) + copy(newValues, v) + v = newValues + } + + return ClientV4Stats{ + Null: v[1], + Read: v[2], + Write: v[3], + Commit: v[4], + Open: v[5], + OpenConfirm: v[6], + OpenNoattr: v[7], + OpenDowngrade: v[8], + Close: v[9], + Setattr: v[10], + FsInfo: v[11], + Renew: v[12], + SetClientID: v[13], + SetClientIDConfirm: v[14], + Lock: v[15], + Lockt: v[16], + Locku: v[17], + Access: v[18], + Getattr: v[19], + Lookup: v[20], + LookupRoot: v[21], + Remove: v[22], + Rename: v[23], + Link: v[24], + Symlink: v[25], + Create: v[26], + Pathconf: v[27], + StatFs: v[28], + ReadLink: v[29], + ReadDir: v[30], + ServerCaps: v[31], + DelegReturn: v[32], + GetACL: v[33], + SetACL: v[34], + FsLocations: v[35], + ReleaseLockowner: v[36], + Secinfo: v[37], + FsidPresent: v[38], + ExchangeID: v[39], + CreateSession: v[40], + DestroySession: v[41], + Sequence: v[42], + GetLeaseTime: v[43], + ReclaimComplete: v[44], + LayoutGet: v[45], + GetDeviceInfo: v[46], + LayoutCommit: v[47], + LayoutReturn: v[48], + SecinfoNoName: v[49], + TestStateID: v[50], + FreeStateID: v[51], + GetDeviceList: v[52], + BindConnToSession: v[53], + DestroyClientID: v[54], + Seek: v[55], + Allocate: v[56], + DeAllocate: v[57], + LayoutStats: v[58], + Clone: v[59], + }, nil +} + +func parseServerV4Stats(v []uint64) (ServerV4Stats, error) { + values := int(v[0]) + if len(v[1:]) != values || values != 2 { + return ServerV4Stats{}, fmt.Errorf("invalid V4Stats line %q", v) + } + + return ServerV4Stats{ + Null: v[1], + Compound: v[2], + }, nil +} + +func parseV4Ops(v []uint64) (V4Ops, error) { + values := int(v[0]) + if len(v[1:]) != values || values < 39 { + return V4Ops{}, fmt.Errorf("invalid V4Ops line %q", v) + } + + stats := V4Ops{ + Op0Unused: v[1], + Op1Unused: v[2], + Op2Future: v[3], + Access: v[4], + Close: v[5], + Commit: v[6], + Create: v[7], + DelegPurge: v[8], + DelegReturn: v[9], + GetAttr: v[10], + GetFH: v[11], + Link: v[12], + Lock: v[13], + Lockt: v[14], + Locku: v[15], + Lookup: v[16], + LookupRoot: v[17], + Nverify: v[18], + Open: v[19], + OpenAttr: v[20], + OpenConfirm: v[21], + OpenDgrd: v[22], + PutFH: v[23], + PutPubFH: v[24], + PutRootFH: v[25], + Read: v[26], + ReadDir: v[27], + ReadLink: v[28], + Remove: v[29], + Rename: v[30], + Renew: v[31], + RestoreFH: v[32], + SaveFH: v[33], + SecInfo: v[34], + SetAttr: v[35], + Verify: v[36], + Write: v[37], + RelLockOwner: v[38], + } + + return stats, nil +} diff --git a/vendor/github.com/prometheus/procfs/nfs/parse_nfs.go b/vendor/github.com/prometheus/procfs/nfs/parse_nfs.go new file mode 100644 index 0000000000..c0d3a5ad9b --- /dev/null +++ b/vendor/github.com/prometheus/procfs/nfs/parse_nfs.go @@ -0,0 +1,67 @@ +// Copyright 2018 The Prometheus Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package nfs + +import ( + "bufio" + "fmt" + "io" + "strings" + + "github.com/prometheus/procfs/internal/util" +) + +// ParseClientRPCStats returns stats read from /proc/net/rpc/nfs +func ParseClientRPCStats(r io.Reader) (*ClientRPCStats, error) { + stats := &ClientRPCStats{} + + scanner := bufio.NewScanner(r) + for scanner.Scan() { + line := scanner.Text() + parts := strings.Fields(scanner.Text()) + // require at least + if len(parts) < 2 { + return nil, fmt.Errorf("invalid NFS metric line %q", line) + } + + values, err := util.ParseUint64s(parts[1:]) + if err != nil { + return nil, fmt.Errorf("error parsing NFS metric line: %s", err) + } + + switch metricLine := parts[0]; metricLine { + case "net": + stats.Network, err = parseNetwork(values) + case "rpc": + stats.ClientRPC, err = parseClientRPC(values) + case "proc2": + stats.V2Stats, err = parseV2Stats(values) + case "proc3": + stats.V3Stats, err = parseV3Stats(values) + case "proc4": + stats.ClientV4Stats, err = parseClientV4Stats(values) + default: + return nil, fmt.Errorf("unknown NFS metric line %q", metricLine) + } + if err != nil { + return nil, fmt.Errorf("errors parsing NFS metric line: %s", err) + } + } + + if err := scanner.Err(); err != nil { + return nil, fmt.Errorf("error scanning NFS file: %s", err) + } + + return stats, nil +} diff --git a/vendor/github.com/prometheus/procfs/nfs/parse_nfsd.go b/vendor/github.com/prometheus/procfs/nfs/parse_nfsd.go new file mode 100644 index 0000000000..57bb4a3585 --- /dev/null +++ b/vendor/github.com/prometheus/procfs/nfs/parse_nfsd.go @@ -0,0 +1,89 @@ +// Copyright 2018 The Prometheus Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package nfs + +import ( + "bufio" + "fmt" + "io" + "strings" + + "github.com/prometheus/procfs/internal/util" +) + +// ParseServerRPCStats returns stats read from /proc/net/rpc/nfsd +func ParseServerRPCStats(r io.Reader) (*ServerRPCStats, error) { + stats := &ServerRPCStats{} + + scanner := bufio.NewScanner(r) + for scanner.Scan() { + line := scanner.Text() + parts := strings.Fields(scanner.Text()) + // require at least + if len(parts) < 2 { + return nil, fmt.Errorf("invalid NFSd metric line %q", line) + } + label := parts[0] + + var values []uint64 + var err error + if label == "th" { + if len(parts) < 3 { + return nil, fmt.Errorf("invalid NFSd th metric line %q", line) + } + values, err = util.ParseUint64s(parts[1:3]) + } else { + values, err = util.ParseUint64s(parts[1:]) + } + if err != nil { + return nil, fmt.Errorf("error parsing NFSd metric line: %s", err) + } + + switch metricLine := parts[0]; metricLine { + case "rc": + stats.ReplyCache, err = parseReplyCache(values) + case "fh": + stats.FileHandles, err = parseFileHandles(values) + case "io": + stats.InputOutput, err = parseInputOutput(values) + case "th": + stats.Threads, err = parseThreads(values) + case "ra": + stats.ReadAheadCache, err = parseReadAheadCache(values) + case "net": + stats.Network, err = parseNetwork(values) + case "rpc": + stats.ServerRPC, err = parseServerRPC(values) + case "proc2": + stats.V2Stats, err = parseV2Stats(values) + case "proc3": + stats.V3Stats, err = parseV3Stats(values) + case "proc4": + stats.ServerV4Stats, err = parseServerV4Stats(values) + case "proc4ops": + stats.V4Ops, err = parseV4Ops(values) + default: + return nil, fmt.Errorf("unknown NFSd metric line %q", metricLine) + } + if err != nil { + return nil, fmt.Errorf("errors parsing NFSd metric line: %s", err) + } + } + + if err := scanner.Err(); err != nil { + return nil, fmt.Errorf("error scanning NFSd file: %s", err) + } + + return stats, nil +} diff --git a/vendor/github.com/prometheus/procfs/proc.go b/vendor/github.com/prometheus/procfs/proc.go index 0d0a6a90f0..06bed0ef4a 100644 --- a/vendor/github.com/prometheus/procfs/proc.go +++ b/vendor/github.com/prometheus/procfs/proc.go @@ -1,6 +1,20 @@ +// Copyright 2018 The Prometheus Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + package procfs import ( + "bytes" "fmt" "io/ioutil" "os" @@ -113,7 +127,7 @@ func (p Proc) CmdLine() ([]string, error) { return []string{}, nil } - return strings.Split(string(data[:len(data)-1]), string(byte(0))), nil + return strings.Split(string(bytes.TrimRight(data, string("\x00"))), string(byte(0))), nil } // Comm returns the command name of a process. @@ -142,6 +156,26 @@ func (p Proc) Executable() (string, error) { return exe, err } +// Cwd returns the absolute path to the current working directory of the process. +func (p Proc) Cwd() (string, error) { + wd, err := os.Readlink(p.path("cwd")) + if os.IsNotExist(err) { + return "", nil + } + + return wd, err +} + +// RootDir returns the absolute path to the process's root directory (as set by chroot) +func (p Proc) RootDir() (string, error) { + rdir, err := os.Readlink(p.path("root")) + if os.IsNotExist(err) { + return "", nil + } + + return rdir, err +} + // FileDescriptors returns the currently open file descriptors of a process. func (p Proc) FileDescriptors() ([]uintptr, error) { names, err := p.fileDescriptors() @@ -192,6 +226,18 @@ func (p Proc) FileDescriptorsLen() (int, error) { return len(fds), nil } +// MountStats retrieves statistics and configuration for mount points in a +// process's namespace. +func (p Proc) MountStats() ([]*Mount, error) { + f, err := os.Open(p.path("mountstats")) + if err != nil { + return nil, err + } + defer f.Close() + + return parseMountStats(f) +} + func (p Proc) fileDescriptors() ([]string, error) { d, err := os.Open(p.path("fd")) if err != nil { diff --git a/vendor/github.com/prometheus/procfs/proc_io.go b/vendor/github.com/prometheus/procfs/proc_io.go index b4e31d7ba3..0251c83bfe 100644 --- a/vendor/github.com/prometheus/procfs/proc_io.go +++ b/vendor/github.com/prometheus/procfs/proc_io.go @@ -1,3 +1,16 @@ +// Copyright 2018 The Prometheus Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + package procfs import ( @@ -47,9 +60,6 @@ func (p Proc) NewIO() (ProcIO, error) { _, err = fmt.Sscanf(string(data), ioFormat, &pio.RChar, &pio.WChar, &pio.SyscR, &pio.SyscW, &pio.ReadBytes, &pio.WriteBytes, &pio.CancelledWriteBytes) - if err != nil { - return pio, err - } - return pio, nil + return pio, err } diff --git a/vendor/github.com/prometheus/procfs/proc_limits.go b/vendor/github.com/prometheus/procfs/proc_limits.go index 2df997ce11..f04ba6fda8 100644 --- a/vendor/github.com/prometheus/procfs/proc_limits.go +++ b/vendor/github.com/prometheus/procfs/proc_limits.go @@ -1,3 +1,16 @@ +// Copyright 2018 The Prometheus Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + package procfs import ( @@ -13,46 +26,46 @@ import ( // http://man7.org/linux/man-pages/man2/getrlimit.2.html. type ProcLimits struct { // CPU time limit in seconds. - CPUTime int + CPUTime int64 // Maximum size of files that the process may create. - FileSize int + FileSize int64 // Maximum size of the process's data segment (initialized data, // uninitialized data, and heap). - DataSize int + DataSize int64 // Maximum size of the process stack in bytes. - StackSize int + StackSize int64 // Maximum size of a core file. - CoreFileSize int + CoreFileSize int64 // Limit of the process's resident set in pages. - ResidentSet int + ResidentSet int64 // Maximum number of processes that can be created for the real user ID of // the calling process. - Processes int + Processes int64 // Value one greater than the maximum file descriptor number that can be // opened by this process. - OpenFiles int + OpenFiles int64 // Maximum number of bytes of memory that may be locked into RAM. - LockedMemory int + LockedMemory int64 // Maximum size of the process's virtual memory address space in bytes. - AddressSpace int + AddressSpace int64 // Limit on the combined number of flock(2) locks and fcntl(2) leases that // this process may establish. - FileLocks int + FileLocks int64 // Limit of signals that may be queued for the real user ID of the calling // process. - PendingSignals int + PendingSignals int64 // Limit on the number of bytes that can be allocated for POSIX message // queues for the real user ID of the calling process. - MsqqueueSize int + MsqqueueSize int64 // Limit of the nice priority set using setpriority(2) or nice(2). - NicePriority int + NicePriority int64 // Limit of the real-time priority set using sched_setscheduler(2) or // sched_setparam(2). - RealtimePriority int + RealtimePriority int64 // Limit (in microseconds) on the amount of CPU time that a process // scheduled under a real-time scheduling policy may consume without making // a blocking system call. - RealtimeTimeout int + RealtimeTimeout int64 } const ( @@ -125,13 +138,13 @@ func (p Proc) NewLimits() (ProcLimits, error) { return l, s.Err() } -func parseInt(s string) (int, error) { +func parseInt(s string) (int64, error) { if s == limitsUnlimited { return -1, nil } - i, err := strconv.ParseInt(s, 10, 32) + i, err := strconv.ParseInt(s, 10, 64) if err != nil { return 0, fmt.Errorf("couldn't parse value %s: %s", s, err) } - return int(i), nil + return i, nil } diff --git a/vendor/github.com/prometheus/procfs/proc_ns.go b/vendor/github.com/prometheus/procfs/proc_ns.go new file mode 100644 index 0000000000..d06c26ebad --- /dev/null +++ b/vendor/github.com/prometheus/procfs/proc_ns.go @@ -0,0 +1,68 @@ +// Copyright 2018 The Prometheus Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package procfs + +import ( + "fmt" + "os" + "strconv" + "strings" +) + +// Namespace represents a single namespace of a process. +type Namespace struct { + Type string // Namespace type. + Inode uint32 // Inode number of the namespace. If two processes are in the same namespace their inodes will match. +} + +// Namespaces contains all of the namespaces that the process is contained in. +type Namespaces map[string]Namespace + +// NewNamespaces reads from /proc/[pid/ns/* to get the namespaces of which the +// process is a member. +func (p Proc) NewNamespaces() (Namespaces, error) { + d, err := os.Open(p.path("ns")) + if err != nil { + return nil, err + } + defer d.Close() + + names, err := d.Readdirnames(-1) + if err != nil { + return nil, fmt.Errorf("failed to read contents of ns dir: %v", err) + } + + ns := make(Namespaces, len(names)) + for _, name := range names { + target, err := os.Readlink(p.path("ns", name)) + if err != nil { + return nil, err + } + + fields := strings.SplitN(target, ":", 2) + if len(fields) != 2 { + return nil, fmt.Errorf("failed to parse namespace type and inode from '%v'", target) + } + + typ := fields[0] + inode, err := strconv.ParseUint(strings.Trim(fields[1], "[]"), 10, 32) + if err != nil { + return nil, fmt.Errorf("failed to parse inode from '%v': %v", fields[1], err) + } + + ns[name] = Namespace{typ, uint32(inode)} + } + + return ns, nil +} diff --git a/vendor/github.com/prometheus/procfs/proc_stat.go b/vendor/github.com/prometheus/procfs/proc_stat.go index 724e271b9e..3cf2a9f18f 100644 --- a/vendor/github.com/prometheus/procfs/proc_stat.go +++ b/vendor/github.com/prometheus/procfs/proc_stat.go @@ -1,3 +1,16 @@ +// Copyright 2018 The Prometheus Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + package procfs import ( diff --git a/vendor/github.com/prometheus/procfs/stat.go b/vendor/github.com/prometheus/procfs/stat.go index 1ca217e8c7..61eb6b0e3c 100644 --- a/vendor/github.com/prometheus/procfs/stat.go +++ b/vendor/github.com/prometheus/procfs/stat.go @@ -1,17 +1,81 @@ +// Copyright 2018 The Prometheus Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + package procfs import ( "bufio" "fmt" + "io" "os" "strconv" "strings" ) +// CPUStat shows how much time the cpu spend in various stages. +type CPUStat struct { + User float64 + Nice float64 + System float64 + Idle float64 + Iowait float64 + IRQ float64 + SoftIRQ float64 + Steal float64 + Guest float64 + GuestNice float64 +} + +// SoftIRQStat represent the softirq statistics as exported in the procfs stat file. +// A nice introduction can be found at https://0xax.gitbooks.io/linux-insides/content/interrupts/interrupts-9.html +// It is possible to get per-cpu stats by reading /proc/softirqs +type SoftIRQStat struct { + Hi uint64 + Timer uint64 + NetTx uint64 + NetRx uint64 + Block uint64 + BlockIoPoll uint64 + Tasklet uint64 + Sched uint64 + Hrtimer uint64 + Rcu uint64 +} + // Stat represents kernel/system statistics. type Stat struct { // Boot time in seconds since the Epoch. - BootTime int64 + BootTime uint64 + // Summed up cpu statistics. + CPUTotal CPUStat + // Per-CPU statistics. + CPU []CPUStat + // Number of times interrupts were handled, which contains numbered and unnumbered IRQs. + IRQTotal uint64 + // Number of times a numbered IRQ was triggered. + IRQ []uint64 + // Number of times a context switch happened. + ContextSwitches uint64 + // Number of times a process was created. + ProcessCreated uint64 + // Number of processes currently running. + ProcessesRunning uint64 + // Number of processes currently blocked (waiting for IO). + ProcessesBlocked uint64 + // Number of times a softirq was scheduled. + SoftIRQTotal uint64 + // Detailed softirq statistics. + SoftIRQ SoftIRQStat } // NewStat returns kernel/system statistics read from /proc/stat. @@ -24,33 +88,145 @@ func NewStat() (Stat, error) { return fs.NewStat() } +// Parse a cpu statistics line and returns the CPUStat struct plus the cpu id (or -1 for the overall sum). +func parseCPUStat(line string) (CPUStat, int64, error) { + cpuStat := CPUStat{} + var cpu string + + count, err := fmt.Sscanf(line, "%s %f %f %f %f %f %f %f %f %f %f", + &cpu, + &cpuStat.User, &cpuStat.Nice, &cpuStat.System, &cpuStat.Idle, + &cpuStat.Iowait, &cpuStat.IRQ, &cpuStat.SoftIRQ, &cpuStat.Steal, + &cpuStat.Guest, &cpuStat.GuestNice) + + if err != nil && err != io.EOF { + return CPUStat{}, -1, fmt.Errorf("couldn't parse %s (cpu): %s", line, err) + } + if count == 0 { + return CPUStat{}, -1, fmt.Errorf("couldn't parse %s (cpu): 0 elements parsed", line) + } + + cpuStat.User /= userHZ + cpuStat.Nice /= userHZ + cpuStat.System /= userHZ + cpuStat.Idle /= userHZ + cpuStat.Iowait /= userHZ + cpuStat.IRQ /= userHZ + cpuStat.SoftIRQ /= userHZ + cpuStat.Steal /= userHZ + cpuStat.Guest /= userHZ + cpuStat.GuestNice /= userHZ + + if cpu == "cpu" { + return cpuStat, -1, nil + } + + cpuID, err := strconv.ParseInt(cpu[3:], 10, 64) + if err != nil { + return CPUStat{}, -1, fmt.Errorf("couldn't parse %s (cpu/cpuid): %s", line, err) + } + + return cpuStat, cpuID, nil +} + +// Parse a softirq line. +func parseSoftIRQStat(line string) (SoftIRQStat, uint64, error) { + softIRQStat := SoftIRQStat{} + var total uint64 + var prefix string + + _, err := fmt.Sscanf(line, "%s %d %d %d %d %d %d %d %d %d %d %d", + &prefix, &total, + &softIRQStat.Hi, &softIRQStat.Timer, &softIRQStat.NetTx, &softIRQStat.NetRx, + &softIRQStat.Block, &softIRQStat.BlockIoPoll, + &softIRQStat.Tasklet, &softIRQStat.Sched, + &softIRQStat.Hrtimer, &softIRQStat.Rcu) + + if err != nil { + return SoftIRQStat{}, 0, fmt.Errorf("couldn't parse %s (softirq): %s", line, err) + } + + return softIRQStat, total, nil +} + // NewStat returns an information about current kernel/system statistics. func (fs FS) NewStat() (Stat, error) { + // See https://www.kernel.org/doc/Documentation/filesystems/proc.txt + f, err := os.Open(fs.Path("stat")) if err != nil { return Stat{}, err } defer f.Close() - s := bufio.NewScanner(f) - for s.Scan() { - line := s.Text() - if !strings.HasPrefix(line, "btime") { + stat := Stat{} + + scanner := bufio.NewScanner(f) + for scanner.Scan() { + line := scanner.Text() + parts := strings.Fields(scanner.Text()) + // require at least + if len(parts) < 2 { continue } - fields := strings.Fields(line) - if len(fields) != 2 { - return Stat{}, fmt.Errorf("couldn't parse %s line %s", f.Name(), line) - } - i, err := strconv.ParseInt(fields[1], 10, 32) - if err != nil { - return Stat{}, fmt.Errorf("couldn't parse %s: %s", fields[1], err) + switch { + case parts[0] == "btime": + if stat.BootTime, err = strconv.ParseUint(parts[1], 10, 64); err != nil { + return Stat{}, fmt.Errorf("couldn't parse %s (btime): %s", parts[1], err) + } + case parts[0] == "intr": + if stat.IRQTotal, err = strconv.ParseUint(parts[1], 10, 64); err != nil { + return Stat{}, fmt.Errorf("couldn't parse %s (intr): %s", parts[1], err) + } + numberedIRQs := parts[2:] + stat.IRQ = make([]uint64, len(numberedIRQs)) + for i, count := range numberedIRQs { + if stat.IRQ[i], err = strconv.ParseUint(count, 10, 64); err != nil { + return Stat{}, fmt.Errorf("couldn't parse %s (intr%d): %s", count, i, err) + } + } + case parts[0] == "ctxt": + if stat.ContextSwitches, err = strconv.ParseUint(parts[1], 10, 64); err != nil { + return Stat{}, fmt.Errorf("couldn't parse %s (ctxt): %s", parts[1], err) + } + case parts[0] == "processes": + if stat.ProcessCreated, err = strconv.ParseUint(parts[1], 10, 64); err != nil { + return Stat{}, fmt.Errorf("couldn't parse %s (processes): %s", parts[1], err) + } + case parts[0] == "procs_running": + if stat.ProcessesRunning, err = strconv.ParseUint(parts[1], 10, 64); err != nil { + return Stat{}, fmt.Errorf("couldn't parse %s (procs_running): %s", parts[1], err) + } + case parts[0] == "procs_blocked": + if stat.ProcessesBlocked, err = strconv.ParseUint(parts[1], 10, 64); err != nil { + return Stat{}, fmt.Errorf("couldn't parse %s (procs_blocked): %s", parts[1], err) + } + case parts[0] == "softirq": + softIRQStats, total, err := parseSoftIRQStat(line) + if err != nil { + return Stat{}, err + } + stat.SoftIRQTotal = total + stat.SoftIRQ = softIRQStats + case strings.HasPrefix(parts[0], "cpu"): + cpuStat, cpuID, err := parseCPUStat(line) + if err != nil { + return Stat{}, err + } + if cpuID == -1 { + stat.CPUTotal = cpuStat + } else { + for int64(len(stat.CPU)) <= cpuID { + stat.CPU = append(stat.CPU, CPUStat{}) + } + stat.CPU[cpuID] = cpuStat + } } - return Stat{BootTime: i}, nil } - if err := s.Err(); err != nil { + + if err := scanner.Err(); err != nil { return Stat{}, fmt.Errorf("couldn't parse %s: %s", f.Name(), err) } - return Stat{}, fmt.Errorf("couldn't parse %s, missing btime", f.Name()) + return stat, nil } diff --git a/vendor/github.com/prometheus/procfs/ttar b/vendor/github.com/prometheus/procfs/ttar new file mode 100644 index 0000000000..b0171a12b5 --- /dev/null +++ b/vendor/github.com/prometheus/procfs/ttar @@ -0,0 +1,389 @@ +#!/usr/bin/env bash + +# Purpose: plain text tar format +# Limitations: - only suitable for text files, directories, and symlinks +# - stores only filename, content, and mode +# - not designed for untrusted input +# +# Note: must work with bash version 3.2 (macOS) + +# Copyright 2017 Roger Luethi +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +set -o errexit -o nounset + +# Sanitize environment (for instance, standard sorting of glob matches) +export LC_ALL=C + +path="" +CMD="" +ARG_STRING="$*" + +#------------------------------------------------------------------------------ +# Not all sed implementations can work on null bytes. In order to make ttar +# work out of the box on macOS, use Python as a stream editor. + +USE_PYTHON=0 + +PYTHON_CREATE_FILTER=$(cat << 'PCF' +#!/usr/bin/env python + +import re +import sys + +for line in sys.stdin: + line = re.sub(r'EOF', r'\EOF', line) + line = re.sub(r'NULLBYTE', r'\NULLBYTE', line) + line = re.sub('\x00', r'NULLBYTE', line) + sys.stdout.write(line) +PCF +) + +PYTHON_EXTRACT_FILTER=$(cat << 'PEF' +#!/usr/bin/env python + +import re +import sys + +for line in sys.stdin: + line = re.sub(r'(?/dev/null; then + echo "ERROR Python not found. Aborting." + exit 2 + fi + USE_PYTHON=1 + fi +} + +#------------------------------------------------------------------------------ + +function usage { + bname=$(basename "$0") + cat << USAGE +Usage: $bname [-C ] -c -f (create archive) + $bname -t -f (list archive contents) + $bname [-C ] -x -f (extract archive) + +Options: + -C (change directory) + -v (verbose) + +Example: Change to sysfs directory, create ttar file from fixtures directory + $bname -C sysfs -c -f sysfs/fixtures.ttar fixtures/ +USAGE +exit "$1" +} + +function vecho { + if [ "${VERBOSE:-}" == "yes" ]; then + echo >&7 "$@" + fi +} + +function set_cmd { + if [ -n "$CMD" ]; then + echo "ERROR: more than one command given" + echo + usage 2 + fi + CMD=$1 +} + +unset VERBOSE + +while getopts :cf:htxvC: opt; do + case $opt in + c) + set_cmd "create" + ;; + f) + ARCHIVE=$OPTARG + ;; + h) + usage 0 + ;; + t) + set_cmd "list" + ;; + x) + set_cmd "extract" + ;; + v) + VERBOSE=yes + exec 7>&1 + ;; + C) + CDIR=$OPTARG + ;; + *) + echo >&2 "ERROR: invalid option -$OPTARG" + echo + usage 1 + ;; + esac +done + +# Remove processed options from arguments +shift $(( OPTIND - 1 )); + +if [ "${CMD:-}" == "" ]; then + echo >&2 "ERROR: no command given" + echo + usage 1 +elif [ "${ARCHIVE:-}" == "" ]; then + echo >&2 "ERROR: no archive name given" + echo + usage 1 +fi + +function list { + local path="" + local size=0 + local line_no=0 + local ttar_file=$1 + if [ -n "${2:-}" ]; then + echo >&2 "ERROR: too many arguments." + echo + usage 1 + fi + if [ ! -e "$ttar_file" ]; then + echo >&2 "ERROR: file not found ($ttar_file)" + echo + usage 1 + fi + while read -r line; do + line_no=$(( line_no + 1 )) + if [ $size -gt 0 ]; then + size=$(( size - 1 )) + continue + fi + if [[ $line =~ ^Path:\ (.*)$ ]]; then + path=${BASH_REMATCH[1]} + elif [[ $line =~ ^Lines:\ (.*)$ ]]; then + size=${BASH_REMATCH[1]} + echo "$path" + elif [[ $line =~ ^Directory:\ (.*)$ ]]; then + path=${BASH_REMATCH[1]} + echo "$path/" + elif [[ $line =~ ^SymlinkTo:\ (.*)$ ]]; then + echo "$path -> ${BASH_REMATCH[1]}" + fi + done < "$ttar_file" +} + +function extract { + local path="" + local size=0 + local line_no=0 + local ttar_file=$1 + if [ -n "${2:-}" ]; then + echo >&2 "ERROR: too many arguments." + echo + usage 1 + fi + if [ ! -e "$ttar_file" ]; then + echo >&2 "ERROR: file not found ($ttar_file)" + echo + usage 1 + fi + while IFS= read -r line; do + line_no=$(( line_no + 1 )) + local eof_without_newline + if [ "$size" -gt 0 ]; then + if [[ "$line" =~ [^\\]EOF ]]; then + # An EOF not preceeded by a backslash indicates that the line + # does not end with a newline + eof_without_newline=1 + else + eof_without_newline=0 + fi + # Replace NULLBYTE with null byte if at beginning of line + # Replace NULLBYTE with null byte unless preceeded by backslash + # Remove one backslash in front of NULLBYTE (if any) + # Remove EOF unless preceeded by backslash + # Remove one backslash in front of EOF + if [ $USE_PYTHON -eq 1 ]; then + echo -n "$line" | python -c "$PYTHON_EXTRACT_FILTER" >> "$path" + else + # The repeated pattern makes up for sed's lack of negative + # lookbehind assertions (for consecutive null bytes). + echo -n "$line" | \ + sed -e 's/^NULLBYTE/\x0/g; + s/\([^\\]\)NULLBYTE/\1\x0/g; + s/\([^\\]\)NULLBYTE/\1\x0/g; + s/\\NULLBYTE/NULLBYTE/g; + s/\([^\\]\)EOF/\1/g; + s/\\EOF/EOF/g; + ' >> "$path" + fi + if [[ "$eof_without_newline" -eq 0 ]]; then + echo >> "$path" + fi + size=$(( size - 1 )) + continue + fi + if [[ $line =~ ^Path:\ (.*)$ ]]; then + path=${BASH_REMATCH[1]} + if [ -e "$path" ] || [ -L "$path" ]; then + rm "$path" + fi + elif [[ $line =~ ^Lines:\ (.*)$ ]]; then + size=${BASH_REMATCH[1]} + # Create file even if it is zero-length. + touch "$path" + vecho " $path" + elif [[ $line =~ ^Mode:\ (.*)$ ]]; then + mode=${BASH_REMATCH[1]} + chmod "$mode" "$path" + vecho "$mode" + elif [[ $line =~ ^Directory:\ (.*)$ ]]; then + path=${BASH_REMATCH[1]} + mkdir -p "$path" + vecho " $path/" + elif [[ $line =~ ^SymlinkTo:\ (.*)$ ]]; then + ln -s "${BASH_REMATCH[1]}" "$path" + vecho " $path -> ${BASH_REMATCH[1]}" + elif [[ $line =~ ^# ]]; then + # Ignore comments between files + continue + else + echo >&2 "ERROR: Unknown keyword on line $line_no: $line" + exit 1 + fi + done < "$ttar_file" +} + +function div { + echo "# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -" \ + "- - - - - -" +} + +function get_mode { + local mfile=$1 + if [ -z "${STAT_OPTION:-}" ]; then + if stat -c '%a' "$mfile" >/dev/null 2>&1; then + # GNU stat + STAT_OPTION='-c' + STAT_FORMAT='%a' + else + # BSD stat + STAT_OPTION='-f' + # Octal output, user/group/other (omit file type, sticky bit) + STAT_FORMAT='%OLp' + fi + fi + stat "${STAT_OPTION}" "${STAT_FORMAT}" "$mfile" +} + +function _create { + shopt -s nullglob + local mode + local eof_without_newline + while (( "$#" )); do + file=$1 + if [ -L "$file" ]; then + echo "Path: $file" + symlinkTo=$(readlink "$file") + echo "SymlinkTo: $symlinkTo" + vecho " $file -> $symlinkTo" + div + elif [ -d "$file" ]; then + # Strip trailing slash (if there is one) + file=${file%/} + echo "Directory: $file" + mode=$(get_mode "$file") + echo "Mode: $mode" + vecho "$mode $file/" + div + # Find all files and dirs, including hidden/dot files + for x in "$file/"{*,.[^.]*}; do + _create "$x" + done + elif [ -f "$file" ]; then + echo "Path: $file" + lines=$(wc -l "$file"|awk '{print $1}') + eof_without_newline=0 + if [[ "$(wc -c "$file"|awk '{print $1}')" -gt 0 ]] && \ + [[ "$(tail -c 1 "$file" | wc -l)" -eq 0 ]]; then + eof_without_newline=1 + lines=$((lines+1)) + fi + echo "Lines: $lines" + # Add backslash in front of EOF + # Add backslash in front of NULLBYTE + # Replace null byte with NULLBYTE + if [ $USE_PYTHON -eq 1 ]; then + < "$file" python -c "$PYTHON_CREATE_FILTER" + else + < "$file" \ + sed 's/EOF/\\EOF/g; + s/NULLBYTE/\\NULLBYTE/g; + s/\x0/NULLBYTE/g; + ' + fi + if [[ "$eof_without_newline" -eq 1 ]]; then + # Finish line with EOF to indicate that the original line did + # not end with a linefeed + echo "EOF" + fi + mode=$(get_mode "$file") + echo "Mode: $mode" + vecho "$mode $file" + div + else + echo >&2 "ERROR: file not found ($file in $(pwd))" + exit 2 + fi + shift + done +} + +function create { + ttar_file=$1 + shift + if [ -z "${1:-}" ]; then + echo >&2 "ERROR: missing arguments." + echo + usage 1 + fi + if [ -e "$ttar_file" ]; then + rm "$ttar_file" + fi + exec > "$ttar_file" + echo "# Archive created by ttar $ARG_STRING" + _create "$@" +} + +test_environment + +if [ -n "${CDIR:-}" ]; then + if [[ "$ARCHIVE" != /* ]]; then + # Relative path: preserve the archive's location before changing + # directory + ARCHIVE="$(pwd)/$ARCHIVE" + fi + cd "$CDIR" +fi + +"$CMD" "$ARCHIVE" "$@" diff --git a/vendor/github.com/prometheus/procfs/xfrm.go b/vendor/github.com/prometheus/procfs/xfrm.go new file mode 100644 index 0000000000..8f1508f0fd --- /dev/null +++ b/vendor/github.com/prometheus/procfs/xfrm.go @@ -0,0 +1,187 @@ +// Copyright 2017 Prometheus Team +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package procfs + +import ( + "bufio" + "fmt" + "os" + "strconv" + "strings" +) + +// XfrmStat models the contents of /proc/net/xfrm_stat. +type XfrmStat struct { + // All errors which are not matched by other + XfrmInError int + // No buffer is left + XfrmInBufferError int + // Header Error + XfrmInHdrError int + // No state found + // i.e. either inbound SPI, address, or IPSEC protocol at SA is wrong + XfrmInNoStates int + // Transformation protocol specific error + // e.g. SA Key is wrong + XfrmInStateProtoError int + // Transformation mode specific error + XfrmInStateModeError int + // Sequence error + // e.g. sequence number is out of window + XfrmInStateSeqError int + // State is expired + XfrmInStateExpired int + // State has mismatch option + // e.g. UDP encapsulation type is mismatched + XfrmInStateMismatch int + // State is invalid + XfrmInStateInvalid int + // No matching template for states + // e.g. Inbound SAs are correct but SP rule is wrong + XfrmInTmplMismatch int + // No policy is found for states + // e.g. Inbound SAs are correct but no SP is found + XfrmInNoPols int + // Policy discards + XfrmInPolBlock int + // Policy error + XfrmInPolError int + // All errors which are not matched by others + XfrmOutError int + // Bundle generation error + XfrmOutBundleGenError int + // Bundle check error + XfrmOutBundleCheckError int + // No state was found + XfrmOutNoStates int + // Transformation protocol specific error + XfrmOutStateProtoError int + // Transportation mode specific error + XfrmOutStateModeError int + // Sequence error + // i.e sequence number overflow + XfrmOutStateSeqError int + // State is expired + XfrmOutStateExpired int + // Policy discads + XfrmOutPolBlock int + // Policy is dead + XfrmOutPolDead int + // Policy Error + XfrmOutPolError int + XfrmFwdHdrError int + XfrmOutStateInvalid int + XfrmAcquireError int +} + +// NewXfrmStat reads the xfrm_stat statistics. +func NewXfrmStat() (XfrmStat, error) { + fs, err := NewFS(DefaultMountPoint) + if err != nil { + return XfrmStat{}, err + } + + return fs.NewXfrmStat() +} + +// NewXfrmStat reads the xfrm_stat statistics from the 'proc' filesystem. +func (fs FS) NewXfrmStat() (XfrmStat, error) { + file, err := os.Open(fs.Path("net/xfrm_stat")) + if err != nil { + return XfrmStat{}, err + } + defer file.Close() + + var ( + x = XfrmStat{} + s = bufio.NewScanner(file) + ) + + for s.Scan() { + fields := strings.Fields(s.Text()) + + if len(fields) != 2 { + return XfrmStat{}, fmt.Errorf( + "couldn't parse %s line %s", file.Name(), s.Text()) + } + + name := fields[0] + value, err := strconv.Atoi(fields[1]) + if err != nil { + return XfrmStat{}, err + } + + switch name { + case "XfrmInError": + x.XfrmInError = value + case "XfrmInBufferError": + x.XfrmInBufferError = value + case "XfrmInHdrError": + x.XfrmInHdrError = value + case "XfrmInNoStates": + x.XfrmInNoStates = value + case "XfrmInStateProtoError": + x.XfrmInStateProtoError = value + case "XfrmInStateModeError": + x.XfrmInStateModeError = value + case "XfrmInStateSeqError": + x.XfrmInStateSeqError = value + case "XfrmInStateExpired": + x.XfrmInStateExpired = value + case "XfrmInStateInvalid": + x.XfrmInStateInvalid = value + case "XfrmInTmplMismatch": + x.XfrmInTmplMismatch = value + case "XfrmInNoPols": + x.XfrmInNoPols = value + case "XfrmInPolBlock": + x.XfrmInPolBlock = value + case "XfrmInPolError": + x.XfrmInPolError = value + case "XfrmOutError": + x.XfrmOutError = value + case "XfrmInStateMismatch": + x.XfrmInStateMismatch = value + case "XfrmOutBundleGenError": + x.XfrmOutBundleGenError = value + case "XfrmOutBundleCheckError": + x.XfrmOutBundleCheckError = value + case "XfrmOutNoStates": + x.XfrmOutNoStates = value + case "XfrmOutStateProtoError": + x.XfrmOutStateProtoError = value + case "XfrmOutStateModeError": + x.XfrmOutStateModeError = value + case "XfrmOutStateSeqError": + x.XfrmOutStateSeqError = value + case "XfrmOutStateExpired": + x.XfrmOutStateExpired = value + case "XfrmOutPolBlock": + x.XfrmOutPolBlock = value + case "XfrmOutPolDead": + x.XfrmOutPolDead = value + case "XfrmOutPolError": + x.XfrmOutPolError = value + case "XfrmFwdHdrError": + x.XfrmFwdHdrError = value + case "XfrmOutStateInvalid": + x.XfrmOutStateInvalid = value + case "XfrmAcquireError": + x.XfrmAcquireError = value + } + + } + + return x, s.Err() +} diff --git a/vendor/github.com/prometheus/procfs/xfs/parse.go b/vendor/github.com/prometheus/procfs/xfs/parse.go new file mode 100644 index 0000000000..2bc0ef3427 --- /dev/null +++ b/vendor/github.com/prometheus/procfs/xfs/parse.go @@ -0,0 +1,330 @@ +// Copyright 2017 The Prometheus Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package xfs + +import ( + "bufio" + "fmt" + "io" + "strings" + + "github.com/prometheus/procfs/internal/util" +) + +// ParseStats parses a Stats from an input io.Reader, using the format +// found in /proc/fs/xfs/stat. +func ParseStats(r io.Reader) (*Stats, error) { + const ( + // Fields parsed into stats structures. + fieldExtentAlloc = "extent_alloc" + fieldAbt = "abt" + fieldBlkMap = "blk_map" + fieldBmbt = "bmbt" + fieldDir = "dir" + fieldTrans = "trans" + fieldIg = "ig" + fieldLog = "log" + fieldRw = "rw" + fieldAttr = "attr" + fieldIcluster = "icluster" + fieldVnodes = "vnodes" + fieldBuf = "buf" + fieldXpc = "xpc" + + // Unimplemented at this time due to lack of documentation. + fieldPushAil = "push_ail" + fieldXstrat = "xstrat" + fieldAbtb2 = "abtb2" + fieldAbtc2 = "abtc2" + fieldBmbt2 = "bmbt2" + fieldIbt2 = "ibt2" + fieldFibt2 = "fibt2" + fieldQm = "qm" + fieldDebug = "debug" + ) + + var xfss Stats + + s := bufio.NewScanner(r) + for s.Scan() { + // Expect at least a string label and a single integer value, ex: + // - abt 0 + // - rw 1 2 + ss := strings.Fields(string(s.Bytes())) + if len(ss) < 2 { + continue + } + label := ss[0] + + // Extended precision counters are uint64 values. + if label == fieldXpc { + us, err := util.ParseUint64s(ss[1:]) + if err != nil { + return nil, err + } + + xfss.ExtendedPrecision, err = extendedPrecisionStats(us) + if err != nil { + return nil, err + } + + continue + } + + // All other counters are uint32 values. + us, err := util.ParseUint32s(ss[1:]) + if err != nil { + return nil, err + } + + switch label { + case fieldExtentAlloc: + xfss.ExtentAllocation, err = extentAllocationStats(us) + case fieldAbt: + xfss.AllocationBTree, err = btreeStats(us) + case fieldBlkMap: + xfss.BlockMapping, err = blockMappingStats(us) + case fieldBmbt: + xfss.BlockMapBTree, err = btreeStats(us) + case fieldDir: + xfss.DirectoryOperation, err = directoryOperationStats(us) + case fieldTrans: + xfss.Transaction, err = transactionStats(us) + case fieldIg: + xfss.InodeOperation, err = inodeOperationStats(us) + case fieldLog: + xfss.LogOperation, err = logOperationStats(us) + case fieldRw: + xfss.ReadWrite, err = readWriteStats(us) + case fieldAttr: + xfss.AttributeOperation, err = attributeOperationStats(us) + case fieldIcluster: + xfss.InodeClustering, err = inodeClusteringStats(us) + case fieldVnodes: + xfss.Vnode, err = vnodeStats(us) + case fieldBuf: + xfss.Buffer, err = bufferStats(us) + } + if err != nil { + return nil, err + } + } + + return &xfss, s.Err() +} + +// extentAllocationStats builds an ExtentAllocationStats from a slice of uint32s. +func extentAllocationStats(us []uint32) (ExtentAllocationStats, error) { + if l := len(us); l != 4 { + return ExtentAllocationStats{}, fmt.Errorf("incorrect number of values for XFS extent allocation stats: %d", l) + } + + return ExtentAllocationStats{ + ExtentsAllocated: us[0], + BlocksAllocated: us[1], + ExtentsFreed: us[2], + BlocksFreed: us[3], + }, nil +} + +// btreeStats builds a BTreeStats from a slice of uint32s. +func btreeStats(us []uint32) (BTreeStats, error) { + if l := len(us); l != 4 { + return BTreeStats{}, fmt.Errorf("incorrect number of values for XFS btree stats: %d", l) + } + + return BTreeStats{ + Lookups: us[0], + Compares: us[1], + RecordsInserted: us[2], + RecordsDeleted: us[3], + }, nil +} + +// BlockMappingStat builds a BlockMappingStats from a slice of uint32s. +func blockMappingStats(us []uint32) (BlockMappingStats, error) { + if l := len(us); l != 7 { + return BlockMappingStats{}, fmt.Errorf("incorrect number of values for XFS block mapping stats: %d", l) + } + + return BlockMappingStats{ + Reads: us[0], + Writes: us[1], + Unmaps: us[2], + ExtentListInsertions: us[3], + ExtentListDeletions: us[4], + ExtentListLookups: us[5], + ExtentListCompares: us[6], + }, nil +} + +// DirectoryOperationStats builds a DirectoryOperationStats from a slice of uint32s. +func directoryOperationStats(us []uint32) (DirectoryOperationStats, error) { + if l := len(us); l != 4 { + return DirectoryOperationStats{}, fmt.Errorf("incorrect number of values for XFS directory operation stats: %d", l) + } + + return DirectoryOperationStats{ + Lookups: us[0], + Creates: us[1], + Removes: us[2], + Getdents: us[3], + }, nil +} + +// TransactionStats builds a TransactionStats from a slice of uint32s. +func transactionStats(us []uint32) (TransactionStats, error) { + if l := len(us); l != 3 { + return TransactionStats{}, fmt.Errorf("incorrect number of values for XFS transaction stats: %d", l) + } + + return TransactionStats{ + Sync: us[0], + Async: us[1], + Empty: us[2], + }, nil +} + +// InodeOperationStats builds an InodeOperationStats from a slice of uint32s. +func inodeOperationStats(us []uint32) (InodeOperationStats, error) { + if l := len(us); l != 7 { + return InodeOperationStats{}, fmt.Errorf("incorrect number of values for XFS inode operation stats: %d", l) + } + + return InodeOperationStats{ + Attempts: us[0], + Found: us[1], + Recycle: us[2], + Missed: us[3], + Duplicate: us[4], + Reclaims: us[5], + AttributeChange: us[6], + }, nil +} + +// LogOperationStats builds a LogOperationStats from a slice of uint32s. +func logOperationStats(us []uint32) (LogOperationStats, error) { + if l := len(us); l != 5 { + return LogOperationStats{}, fmt.Errorf("incorrect number of values for XFS log operation stats: %d", l) + } + + return LogOperationStats{ + Writes: us[0], + Blocks: us[1], + NoInternalBuffers: us[2], + Force: us[3], + ForceSleep: us[4], + }, nil +} + +// ReadWriteStats builds a ReadWriteStats from a slice of uint32s. +func readWriteStats(us []uint32) (ReadWriteStats, error) { + if l := len(us); l != 2 { + return ReadWriteStats{}, fmt.Errorf("incorrect number of values for XFS read write stats: %d", l) + } + + return ReadWriteStats{ + Read: us[0], + Write: us[1], + }, nil +} + +// AttributeOperationStats builds an AttributeOperationStats from a slice of uint32s. +func attributeOperationStats(us []uint32) (AttributeOperationStats, error) { + if l := len(us); l != 4 { + return AttributeOperationStats{}, fmt.Errorf("incorrect number of values for XFS attribute operation stats: %d", l) + } + + return AttributeOperationStats{ + Get: us[0], + Set: us[1], + Remove: us[2], + List: us[3], + }, nil +} + +// InodeClusteringStats builds an InodeClusteringStats from a slice of uint32s. +func inodeClusteringStats(us []uint32) (InodeClusteringStats, error) { + if l := len(us); l != 3 { + return InodeClusteringStats{}, fmt.Errorf("incorrect number of values for XFS inode clustering stats: %d", l) + } + + return InodeClusteringStats{ + Iflush: us[0], + Flush: us[1], + FlushInode: us[2], + }, nil +} + +// VnodeStats builds a VnodeStats from a slice of uint32s. +func vnodeStats(us []uint32) (VnodeStats, error) { + // The attribute "Free" appears to not be available on older XFS + // stats versions. Therefore, 7 or 8 elements may appear in + // this slice. + l := len(us) + if l != 7 && l != 8 { + return VnodeStats{}, fmt.Errorf("incorrect number of values for XFS vnode stats: %d", l) + } + + s := VnodeStats{ + Active: us[0], + Allocate: us[1], + Get: us[2], + Hold: us[3], + Release: us[4], + Reclaim: us[5], + Remove: us[6], + } + + // Skip adding free, unless it is present. The zero value will + // be used in place of an actual count. + if l == 7 { + return s, nil + } + + s.Free = us[7] + return s, nil +} + +// BufferStats builds a BufferStats from a slice of uint32s. +func bufferStats(us []uint32) (BufferStats, error) { + if l := len(us); l != 9 { + return BufferStats{}, fmt.Errorf("incorrect number of values for XFS buffer stats: %d", l) + } + + return BufferStats{ + Get: us[0], + Create: us[1], + GetLocked: us[2], + GetLockedWaited: us[3], + BusyLocked: us[4], + MissLocked: us[5], + PageRetries: us[6], + PageFound: us[7], + GetRead: us[8], + }, nil +} + +// ExtendedPrecisionStats builds an ExtendedPrecisionStats from a slice of uint32s. +func extendedPrecisionStats(us []uint64) (ExtendedPrecisionStats, error) { + if l := len(us); l != 3 { + return ExtendedPrecisionStats{}, fmt.Errorf("incorrect number of values for XFS extended precision stats: %d", l) + } + + return ExtendedPrecisionStats{ + FlushBytes: us[0], + WriteBytes: us[1], + ReadBytes: us[2], + }, nil +} diff --git a/vendor/github.com/prometheus/procfs/xfs/xfs.go b/vendor/github.com/prometheus/procfs/xfs/xfs.go new file mode 100644 index 0000000000..d86794b7ca --- /dev/null +++ b/vendor/github.com/prometheus/procfs/xfs/xfs.go @@ -0,0 +1,163 @@ +// Copyright 2017 The Prometheus Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Package xfs provides access to statistics exposed by the XFS filesystem. +package xfs + +// Stats contains XFS filesystem runtime statistics, parsed from +// /proc/fs/xfs/stat. +// +// The names and meanings of each statistic were taken from +// http://xfs.org/index.php/Runtime_Stats and xfs_stats.h in the Linux +// kernel source. Most counters are uint32s (same data types used in +// xfs_stats.h), but some of the "extended precision stats" are uint64s. +type Stats struct { + // The name of the filesystem used to source these statistics. + // If empty, this indicates aggregated statistics for all XFS + // filesystems on the host. + Name string + + ExtentAllocation ExtentAllocationStats + AllocationBTree BTreeStats + BlockMapping BlockMappingStats + BlockMapBTree BTreeStats + DirectoryOperation DirectoryOperationStats + Transaction TransactionStats + InodeOperation InodeOperationStats + LogOperation LogOperationStats + ReadWrite ReadWriteStats + AttributeOperation AttributeOperationStats + InodeClustering InodeClusteringStats + Vnode VnodeStats + Buffer BufferStats + ExtendedPrecision ExtendedPrecisionStats +} + +// ExtentAllocationStats contains statistics regarding XFS extent allocations. +type ExtentAllocationStats struct { + ExtentsAllocated uint32 + BlocksAllocated uint32 + ExtentsFreed uint32 + BlocksFreed uint32 +} + +// BTreeStats contains statistics regarding an XFS internal B-tree. +type BTreeStats struct { + Lookups uint32 + Compares uint32 + RecordsInserted uint32 + RecordsDeleted uint32 +} + +// BlockMappingStats contains statistics regarding XFS block maps. +type BlockMappingStats struct { + Reads uint32 + Writes uint32 + Unmaps uint32 + ExtentListInsertions uint32 + ExtentListDeletions uint32 + ExtentListLookups uint32 + ExtentListCompares uint32 +} + +// DirectoryOperationStats contains statistics regarding XFS directory entries. +type DirectoryOperationStats struct { + Lookups uint32 + Creates uint32 + Removes uint32 + Getdents uint32 +} + +// TransactionStats contains statistics regarding XFS metadata transactions. +type TransactionStats struct { + Sync uint32 + Async uint32 + Empty uint32 +} + +// InodeOperationStats contains statistics regarding XFS inode operations. +type InodeOperationStats struct { + Attempts uint32 + Found uint32 + Recycle uint32 + Missed uint32 + Duplicate uint32 + Reclaims uint32 + AttributeChange uint32 +} + +// LogOperationStats contains statistics regarding the XFS log buffer. +type LogOperationStats struct { + Writes uint32 + Blocks uint32 + NoInternalBuffers uint32 + Force uint32 + ForceSleep uint32 +} + +// ReadWriteStats contains statistics regarding the number of read and write +// system calls for XFS filesystems. +type ReadWriteStats struct { + Read uint32 + Write uint32 +} + +// AttributeOperationStats contains statistics regarding manipulation of +// XFS extended file attributes. +type AttributeOperationStats struct { + Get uint32 + Set uint32 + Remove uint32 + List uint32 +} + +// InodeClusteringStats contains statistics regarding XFS inode clustering +// operations. +type InodeClusteringStats struct { + Iflush uint32 + Flush uint32 + FlushInode uint32 +} + +// VnodeStats contains statistics regarding XFS vnode operations. +type VnodeStats struct { + Active uint32 + Allocate uint32 + Get uint32 + Hold uint32 + Release uint32 + Reclaim uint32 + Remove uint32 + Free uint32 +} + +// BufferStats contains statistics regarding XFS read/write I/O buffers. +type BufferStats struct { + Get uint32 + Create uint32 + GetLocked uint32 + GetLockedWaited uint32 + BusyLocked uint32 + MissLocked uint32 + PageRetries uint32 + PageFound uint32 + GetRead uint32 +} + +// ExtendedPrecisionStats contains high precision counters used to track the +// total number of bytes read, written, or flushed, during XFS operations. +type ExtendedPrecisionStats struct { + FlushBytes uint64 + WriteBytes uint64 + ReadBytes uint64 +} diff --git a/vendor/golang.org/x/net/context/ctxhttp/ctxhttp.go b/vendor/golang.org/x/net/context/ctxhttp/ctxhttp.go index 606cf1f972..37dc0cfdb5 100644 --- a/vendor/golang.org/x/net/context/ctxhttp/ctxhttp.go +++ b/vendor/golang.org/x/net/context/ctxhttp/ctxhttp.go @@ -2,18 +2,15 @@ // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. -// +build go1.7 - // Package ctxhttp provides helper functions for performing context-aware HTTP requests. package ctxhttp // import "golang.org/x/net/context/ctxhttp" import ( + "context" "io" "net/http" "net/url" "strings" - - "golang.org/x/net/context" ) // Do sends an HTTP request with the provided http.Client and returns diff --git a/vendor/golang.org/x/net/context/ctxhttp/ctxhttp_pre17.go b/vendor/golang.org/x/net/context/ctxhttp/ctxhttp_pre17.go deleted file mode 100644 index 926870cc23..0000000000 --- a/vendor/golang.org/x/net/context/ctxhttp/ctxhttp_pre17.go +++ /dev/null @@ -1,147 +0,0 @@ -// Copyright 2015 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// +build !go1.7 - -package ctxhttp // import "golang.org/x/net/context/ctxhttp" - -import ( - "io" - "net/http" - "net/url" - "strings" - - "golang.org/x/net/context" -) - -func nop() {} - -var ( - testHookContextDoneBeforeHeaders = nop - testHookDoReturned = nop - testHookDidBodyClose = nop -) - -// Do sends an HTTP request with the provided http.Client and returns an HTTP response. -// If the client is nil, http.DefaultClient is used. -// If the context is canceled or times out, ctx.Err() will be returned. -func Do(ctx context.Context, client *http.Client, req *http.Request) (*http.Response, error) { - if client == nil { - client = http.DefaultClient - } - - // TODO(djd): Respect any existing value of req.Cancel. - cancel := make(chan struct{}) - req.Cancel = cancel - - type responseAndError struct { - resp *http.Response - err error - } - result := make(chan responseAndError, 1) - - // Make local copies of test hooks closed over by goroutines below. - // Prevents data races in tests. - testHookDoReturned := testHookDoReturned - testHookDidBodyClose := testHookDidBodyClose - - go func() { - resp, err := client.Do(req) - testHookDoReturned() - result <- responseAndError{resp, err} - }() - - var resp *http.Response - - select { - case <-ctx.Done(): - testHookContextDoneBeforeHeaders() - close(cancel) - // Clean up after the goroutine calling client.Do: - go func() { - if r := <-result; r.resp != nil { - testHookDidBodyClose() - r.resp.Body.Close() - } - }() - return nil, ctx.Err() - case r := <-result: - var err error - resp, err = r.resp, r.err - if err != nil { - return resp, err - } - } - - c := make(chan struct{}) - go func() { - select { - case <-ctx.Done(): - close(cancel) - case <-c: - // The response's Body is closed. - } - }() - resp.Body = ¬ifyingReader{resp.Body, c} - - return resp, nil -} - -// Get issues a GET request via the Do function. -func Get(ctx context.Context, client *http.Client, url string) (*http.Response, error) { - req, err := http.NewRequest("GET", url, nil) - if err != nil { - return nil, err - } - return Do(ctx, client, req) -} - -// Head issues a HEAD request via the Do function. -func Head(ctx context.Context, client *http.Client, url string) (*http.Response, error) { - req, err := http.NewRequest("HEAD", url, nil) - if err != nil { - return nil, err - } - return Do(ctx, client, req) -} - -// Post issues a POST request via the Do function. -func Post(ctx context.Context, client *http.Client, url string, bodyType string, body io.Reader) (*http.Response, error) { - req, err := http.NewRequest("POST", url, body) - if err != nil { - return nil, err - } - req.Header.Set("Content-Type", bodyType) - return Do(ctx, client, req) -} - -// PostForm issues a POST request via the Do function. -func PostForm(ctx context.Context, client *http.Client, url string, data url.Values) (*http.Response, error) { - return Post(ctx, client, url, "application/x-www-form-urlencoded", strings.NewReader(data.Encode())) -} - -// notifyingReader is an io.ReadCloser that closes the notify channel after -// Close is called or a Read fails on the underlying ReadCloser. -type notifyingReader struct { - io.ReadCloser - notify chan<- struct{} -} - -func (r *notifyingReader) Read(p []byte) (int, error) { - n, err := r.ReadCloser.Read(p) - if err != nil && r.notify != nil { - close(r.notify) - r.notify = nil - } - return n, err -} - -func (r *notifyingReader) Close() error { - err := r.ReadCloser.Close() - if r.notify != nil { - close(r.notify) - r.notify = nil - } - return err -} diff --git a/vendor/golang.org/x/net/trace/trace.go b/vendor/golang.org/x/net/trace/trace.go index f00d869ff7..43711c67d6 100644 --- a/vendor/golang.org/x/net/trace/trace.go +++ b/vendor/golang.org/x/net/trace/trace.go @@ -64,6 +64,7 @@ package trace // import "golang.org/x/net/trace" import ( "bytes" + "context" "fmt" "html/template" "io" @@ -124,6 +125,18 @@ func init() { http.HandleFunc("/debug/events", Events) } +// NewContext returns a copy of the parent context +// and associates it with a Trace. +func NewContext(ctx context.Context, tr Trace) context.Context { + return context.WithValue(ctx, contextKey, tr) +} + +// FromContext returns the Trace bound to the context, if any. +func FromContext(ctx context.Context) (tr Trace, ok bool) { + tr, ok = ctx.Value(contextKey).(Trace) + return +} + // Traces responds with traces from the program. // The package initialization registers it in http.DefaultServeMux // at /debug/requests. diff --git a/vendor/golang.org/x/net/trace/trace_go16.go b/vendor/golang.org/x/net/trace/trace_go16.go deleted file mode 100644 index d608191185..0000000000 --- a/vendor/golang.org/x/net/trace/trace_go16.go +++ /dev/null @@ -1,21 +0,0 @@ -// Copyright 2017 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// +build !go1.7 - -package trace - -import "golang.org/x/net/context" - -// NewContext returns a copy of the parent context -// and associates it with a Trace. -func NewContext(ctx context.Context, tr Trace) context.Context { - return context.WithValue(ctx, contextKey, tr) -} - -// FromContext returns the Trace bound to the context, if any. -func FromContext(ctx context.Context) (tr Trace, ok bool) { - tr, ok = ctx.Value(contextKey).(Trace) - return -} diff --git a/vendor/golang.org/x/net/trace/trace_go17.go b/vendor/golang.org/x/net/trace/trace_go17.go deleted file mode 100644 index df6e1fba7c..0000000000 --- a/vendor/golang.org/x/net/trace/trace_go17.go +++ /dev/null @@ -1,21 +0,0 @@ -// Copyright 2017 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// +build go1.7 - -package trace - -import "context" - -// NewContext returns a copy of the parent context -// and associates it with a Trace. -func NewContext(ctx context.Context, tr Trace) context.Context { - return context.WithValue(ctx, contextKey, tr) -} - -// FromContext returns the Trace bound to the context, if any. -func FromContext(ctx context.Context) (tr Trace, ok bool) { - tr, ok = ctx.Value(contextKey).(Trace) - return -} diff --git a/vendor/modules.txt b/vendor/modules.txt index 4da084f814..8805d04a29 100644 --- a/vendor/modules.txt +++ b/vendor/modules.txt @@ -91,7 +91,7 @@ github.com/kylelemons/godebug/diff github.com/mailru/easyjson/jlexer github.com/mailru/easyjson/jwriter github.com/mailru/easyjson/buffer -# github.com/matttproud/golang_protobuf_extensions v0.0.0-20150406173934-fc2b8d3a73c4 +# github.com/matttproud/golang_protobuf_extensions v1.0.1 github.com/matttproud/golang_protobuf_extensions/pbutil # github.com/miekg/dns v0.0.0-20171108100119-388f6eea2949 github.com/miekg/dns @@ -108,10 +108,11 @@ github.com/oklog/ulid github.com/pkg/errors # github.com/pmezard/go-difflib v1.0.0 github.com/pmezard/go-difflib/difflib -# github.com/prometheus/client_golang v0.0.0-20180319131721-d49167c4b9f3 +# github.com/prometheus/client_golang v0.9.2 github.com/prometheus/client_golang/prometheus github.com/prometheus/client_golang/api github.com/prometheus/client_golang/prometheus/promhttp +github.com/prometheus/client_golang/prometheus/internal # github.com/prometheus/client_model v0.0.0-20180712105110-5c3871d89910 github.com/prometheus/client_model/go # github.com/prometheus/common v0.0.0-20181126121408-4724e9255275 @@ -123,8 +124,11 @@ github.com/prometheus/common/promlog/flag github.com/prometheus/common/config github.com/prometheus/common/expfmt github.com/prometheus/common/internal/bitbucket.org/ww/goautoneg -# github.com/prometheus/procfs v0.0.0-20160411190841-abf152e5f3e9 +# github.com/prometheus/procfs v0.0.0-20181204211112-1dc9a6cbc91a github.com/prometheus/procfs +github.com/prometheus/procfs/nfs +github.com/prometheus/procfs/xfs +github.com/prometheus/procfs/internal/util # github.com/prometheus/prometheus v0.0.0-20180315085919-58e2a31db8de github.com/prometheus/prometheus/pkg/labels # github.com/rs/cors v1.6.0 @@ -144,7 +148,7 @@ github.com/stretchr/testify/require github.com/stretchr/testify/assert # github.com/xlab/treeprint v0.0.0-20180616005107-d6fb6747feb6 github.com/xlab/treeprint -# golang.org/x/net v0.0.0-20180811021610-c39426892332 +# golang.org/x/net v0.0.0-20181201002055-351d144fa1fc golang.org/x/net/netutil golang.org/x/net/context golang.org/x/net/context/ctxhttp