This repository has been archived by the owner on Sep 15, 2021. It is now read-only.
-
Notifications
You must be signed in to change notification settings - Fork 11
/
client_test.go
131 lines (114 loc) · 3.52 KB
/
client_test.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
// Copyright 2018, OpenCensus 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 interop
import (
"bytes"
"encoding/json"
"fmt"
"io/ioutil"
"log"
"net/http"
"os"
"testing"
"golang.org/x/net/context"
"go.opencensus.io/plugin/ochttp"
"go.opencensus.io/plugin/ochttp/propagation/b3"
"go.opencensus.io/plugin/ochttp/propagation/google"
"go.opencensus.io/plugin/ochttp/propagation/tracecontext"
"go.opencensus.io/tag"
"go.opencensus.io/trace"
"go.opencensus.io/trace/propagation"
pb "github.com/census-instrumentation/opencensus-experiments/integration/src/main/proto"
)
var setups = []struct {
name string
envAddrKey string
fallbackAddr string
}{
{name: "GoClient-GoServer", envAddrKey: "OPENCENSUS_GO_HTTP_INTEGRATION_TEST_SERVER_ADDR", fallbackAddr: ":9900"},
// {name: "GoClient-JavaServer", envAddrKey: "OPENCENSUS_JAVA_HTTP_INTEGRATION_TEST_SERVER_ADDR", fallbackAddr: ":9901"},
}
var propagations = []string{"b3", "google", "tracecontext"}
func TestInterop(t *testing.T) {
for _, setup := range setups {
addr := os.Getenv(setup.envAddrKey)
if addr == "" {
addr = setup.fallbackAddr
}
for _, propagation := range propagations {
t.Run(setup.name+"/propagation="+propagation, func(tt *testing.T) {
runInteropTest(tt, addr, propagation)
})
}
}
}
func runInteropTest(t *testing.T, host, propagationStr string) {
req, err := http.NewRequest("POST", fmt.Sprintf("http://%s/?p=%s", host, propagationStr), nil)
if err != nil {
t.Fatalf("go-HTTP client HTTP test err: %v", err)
}
// 1. Create some tags
ctx, err := tag.New(context.Background(),
tag.Insert(mustKey("operation"), "interop-test"),
tag.Insert(mustKey("project"), "open-census"),
)
if err != nil {
t.Fatalf("tag.New err: %v", err)
}
ctx, rootSpan := trace.StartSpan(ctx, "interop-test+"+propagationStr)
defer rootSpan.End()
req = req.WithContext(ctx)
var hf propagation.HTTPFormat
switch propagationStr {
case "b3":
hf = new(b3.HTTPFormat)
case "google":
hf = new(google.HTTPFormat)
case "tracecontext":
hf = new(tracecontext.HTTPFormat)
}
httpClient := &http.Client{
Transport: &ochttp.Transport{
Sampler: trace.AlwaysSample(),
Propagation: hf,
},
}
res, err := httpClient.Do(req)
if err != nil {
t.Fatalf("httpClient.Do err: %v", err)
}
if code := res.StatusCode; code < 200 || code > 299 {
t.Fatalf("httpClient StatusCode(%d) != 2XX status: %q", code, res.Status)
}
blob, err := ioutil.ReadAll(res.Body)
if err != nil {
t.Fatalf("Response.Body read err: %v", err)
}
eres := new(pb.EchoResponse)
if err := json.Unmarshal(blob, eres); err != nil {
t.Fatalf("UnmarshalJSON err: %v", err)
}
sc := rootSpan.SpanContext()
if gti, wti := eres.TraceId, sc.TraceID[:]; !bytes.Equal(gti, wti) {
t.Errorf("TraceID:\ngot= (% X) %x\nwant=(% X) %x", gti, gti, wti, wti)
}
// TODO: (@odeke-em) Once tag propagation for HTTP is implemented, add it here.
}
func mustKey(key string) tag.Key {
k, err := tag.NewKey(key)
if err != nil {
log.Fatalf("tag.NewKey: %q err: %v", key, err)
}
return k
}