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[#8] impl command service, goroutine dump
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,113 @@ | ||
| package pinpoint | ||
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| import ( | ||
| pb "github.com/pinpoint-apm/pinpoint-go-agent/protobuf" | ||
| "os" | ||
| "path/filepath" | ||
| "runtime/pprof" | ||
| "time" | ||
| ) | ||
|
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| var gDump *GoroutineDump | ||
|
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| func commandService(agent *Agent) { | ||
| log("cmd").Info("command service goroutine start") | ||
| defer agent.wg.Done() | ||
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| cmdStream := agent.cmdGrpc.newCommandStreamWithRetry() | ||
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| for true { | ||
| if !agent.enable { | ||
| break | ||
| } | ||
|
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| err := cmdStream.sendCommandMessage() | ||
| if err != nil { | ||
| log("cmd").Errorf("fail to sendCommandMessage(): %v", err) | ||
| cmdStream.close() | ||
| cmdStream = agent.cmdGrpc.newCommandStreamWithRetry() | ||
| continue | ||
| } | ||
|
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||
| for true { | ||
| err = cmdStream.recvCommandRequest() | ||
| if err != nil { | ||
| log("cmd").Errorf("fail to recvCommandRequest(): %v", err) | ||
| break | ||
| } | ||
|
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| cmdReq := cmdStream.cmdReq | ||
| reqId := cmdReq.GetRequestId() | ||
| log("cmd").Debugf("command service request: %v", cmdReq) | ||
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| switch cmdReq.Command.(type) { | ||
| case *pb.PCmdRequest_CommandEcho: | ||
| msg := cmdReq.GetCommandEcho().GetMessage() | ||
| agent.cmdGrpc.sendEcho(reqId, msg) | ||
| break | ||
| case *pb.PCmdRequest_CommandActiveThreadCount: | ||
| atcStream := agent.cmdGrpc.newActiveThreadCountStream(reqId) | ||
| go sendActiveThreadCount(atcStream) | ||
| break | ||
| case *pb.PCmdRequest_CommandActiveThreadDump: | ||
| limit := cmdReq.GetCommandActiveThreadDump().GetLimit() | ||
| threadName := cmdReq.GetCommandActiveThreadDump().GetThreadName() | ||
| localId := cmdReq.GetCommandActiveThreadDump().GetLocalTraceId() | ||
| agent.cmdGrpc.sendActiveThreadDump(reqId, limit, threadName, localId, gDump) | ||
| break | ||
| case *pb.PCmdRequest_CommandActiveThreadLightDump: | ||
| limit := cmdReq.GetCommandActiveThreadLightDump().GetLimit() | ||
| gDump = dumpGoroutine() | ||
| agent.cmdGrpc.sendActiveThreadLightDump(reqId, limit, gDump) | ||
| break | ||
| case nil: | ||
| // The field is not set. | ||
| default: | ||
| } | ||
| } | ||
|
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| if err != nil { | ||
| cmdStream.close() | ||
| cmdStream = agent.cmdGrpc.newCommandStreamWithRetry() | ||
| } | ||
| } | ||
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| cmdStream.close() | ||
| log("cmd").Info("command service goroutine finish") | ||
| } | ||
|
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| func sendActiveThreadCount(s *activeThreadCountStream) { | ||
| for true { | ||
| err := s.sendActiveThreadCount() | ||
| if err != nil { | ||
| log("cmd").Errorf("fail to sendActiveThreadCount(): %d, %v", s.reqId, err) | ||
| break | ||
| } | ||
| time.Sleep(1 * time.Second) | ||
| } | ||
| s.close() | ||
| } | ||
|
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| func dumpGoroutine() *GoroutineDump { | ||
| //var b bytes.Buffer | ||
| //f := bufio.NewWriter(&b) | ||
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| fn := filepath.Join("/tmp", "goroutine.pprof") | ||
| f, err := os.Create(fn) | ||
| if err != nil { | ||
| log("cmd").Errorf("fail to os.Create(): %v", err) | ||
| } | ||
|
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| if mp := pprof.Lookup("goroutine"); mp != nil { | ||
| mp.WriteTo(f, 2) | ||
| } | ||
| f.Close() | ||
|
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| dump, err := loadProfile(fn) | ||
| if err != nil { | ||
| log("cmd").Errorf("fail to dumpGoroutine(): %v", err) | ||
| return nil | ||
| } | ||
|
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||
| return dump | ||
| } |
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