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Merge pull request #188 from dave-tucker/ovsdb-server
examples: Add OVSDB Server example
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,122 @@ | ||
| package main | ||
|
|
||
| import ( | ||
| "context" | ||
| "flag" | ||
| "fmt" | ||
| "log" | ||
| "os" | ||
| "os/signal" | ||
| "path/filepath" | ||
| "runtime" | ||
| "runtime/pprof" | ||
| "time" | ||
|
|
||
| "github.com/ovn-org/libovsdb/client" | ||
| "github.com/ovn-org/libovsdb/example/vswitchd" | ||
| "github.com/ovn-org/libovsdb/model" | ||
| "github.com/ovn-org/libovsdb/ovsdb" | ||
| "github.com/ovn-org/libovsdb/server" | ||
| ) | ||
|
|
||
| var ( | ||
| cpuprofile = flag.String("cpuprofile", "", "write cpu profile to this file") | ||
| memprofile = flag.String("memoryprofile", "", "write memory profile to this file") | ||
| port = flag.Int("port", 56640, "tcp port to listen on") | ||
| ) | ||
|
|
||
| func main() { | ||
| flag.Parse() | ||
| var err error | ||
| if *cpuprofile != "" { | ||
| f, err := os.Create(*cpuprofile) | ||
| if err != nil { | ||
| log.Fatal(err) | ||
| } | ||
| if err := pprof.StartCPUProfile(f); err != nil { | ||
| log.Fatal(err) | ||
| } | ||
| defer pprof.StopCPUProfile() | ||
| } | ||
|
|
||
| dbModel, err := vswitchd.FullDatabaseModel() | ||
| if err != nil { | ||
| log.Fatal(err) | ||
| } | ||
| wd, err := os.Getwd() | ||
| if err != nil { | ||
| log.Fatal(err) | ||
| } | ||
| path := filepath.Join(wd, "vswitchd", "vswitchd.ovsschema") | ||
| f, err := os.Open(path) | ||
| if err != nil { | ||
| log.Fatal(err) | ||
| } | ||
| schema, err := ovsdb.SchemaFromFile(f) | ||
| if err != nil { | ||
| log.Fatal(err) | ||
| } | ||
|
|
||
| ovsDB := server.NewInMemoryDatabase(map[string]*model.DBModel{ | ||
| schema.Name: dbModel, | ||
| }) | ||
|
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| s, err := server.NewOvsdbServer(ovsDB, server.DatabaseModel{ | ||
| Model: dbModel, | ||
| Schema: schema, | ||
| }) | ||
| if err != nil { | ||
| log.Fatal(err) | ||
| } | ||
| defer s.Close() | ||
|
|
||
| sig := make(chan os.Signal, 1) | ||
| signal.Notify(sig, os.Interrupt) | ||
|
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||
| go func(o *server.OvsdbServer) { | ||
| if err := o.Serve("tcp", fmt.Sprintf(":%d", *port)); err != nil { | ||
| log.Fatal(err) | ||
| } | ||
| }(s) | ||
|
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||
| time.Sleep(1 * time.Second) | ||
| c, err := client.NewOVSDBClient(dbModel, client.WithEndpoint(fmt.Sprintf("tcp::%d", *port))) | ||
| if err != nil { | ||
| log.Fatal(err) | ||
| } | ||
|
|
||
| err = c.Connect(context.Background()) | ||
| if err != nil { | ||
| log.Fatal(err) | ||
| } | ||
| ovsRow := &vswitchd.OpenvSwitch{ | ||
| UUID: "ovs", | ||
| } | ||
| ovsOps, err := c.Create(ovsRow) | ||
| if err != nil { | ||
| log.Fatal(err) | ||
| } | ||
| reply, err := c.Transact(ovsOps...) | ||
| if err != nil { | ||
| log.Fatal(err) | ||
| } | ||
| _, err = ovsdb.CheckOperationResults(reply, ovsOps) | ||
| if err != nil { | ||
| log.Fatal(err) | ||
| } | ||
| c.Close() | ||
| log.Printf("listening on tcp::%d", *port) | ||
| <-sig | ||
|
|
||
| if *memprofile != "" { | ||
| f, err := os.Create(*memprofile) | ||
| if err != nil { | ||
| log.Fatal(err) | ||
| } | ||
| defer f.Close() | ||
| runtime.GC() | ||
| if err := pprof.WriteHeapProfile(f); err != nil { | ||
| log.Fatal("could not write memory profile: ", err) | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,3 @@ | ||
| package vswitchd | ||
|
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||
| //go:generate ../../bin/modelgen -p vswitchd -o . ovs.ovsschema |