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feat(hatchery,worker): worker start command (#5986)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,98 @@ | ||
| package local | ||
|
|
||
| import ( | ||
| "bufio" | ||
| "context" | ||
| "fmt" | ||
| "os/exec" | ||
| "strings" | ||
| "time" | ||
|
|
||
| "github.com/rockbears/log" | ||
| ) | ||
|
|
||
| type Logger interface { | ||
| Logf(fmt string, values ...interface{}) | ||
| Errorf(fmt string, values ...interface{}) | ||
| Fatalf(fmt string, values ...interface{}) | ||
| } | ||
|
|
||
| func (h *HatcheryLocal) startCmd(name string, cmd *exec.Cmd, logger Logger) error { | ||
| stdout, err := cmd.StdoutPipe() | ||
| if err != nil { | ||
| return fmt.Errorf("Failure due to internal error: unable to capture stdout: %v", err) | ||
| } | ||
|
|
||
| stderr, err := cmd.StderrPipe() | ||
| if err != nil { | ||
| return fmt.Errorf("Failure due to internal error: unable to capture stderr: %v", err) | ||
| } | ||
|
|
||
| stdoutreader := bufio.NewReader(stdout) | ||
| stderrreader := bufio.NewReader(stderr) | ||
|
|
||
| outchan := make(chan bool) | ||
| go func() { | ||
| for { | ||
| line, err := stdoutreader.ReadString('\n') | ||
| if line != "" { | ||
| logger.Logf(line) | ||
| } | ||
| if err != nil { | ||
| stdout.Close() | ||
| close(outchan) | ||
| return | ||
| } | ||
| } | ||
| }() | ||
|
|
||
| errchan := make(chan bool) | ||
| go func() { | ||
| for { | ||
| line, err := stderrreader.ReadString('\n') | ||
| if line != "" { | ||
| logger.Logf(line) | ||
| } | ||
| if err != nil { | ||
| stderr.Close() | ||
| close(errchan) | ||
| return | ||
| } | ||
| } | ||
| }() | ||
|
|
||
| if err := cmd.Start(); err != nil { | ||
| return fmt.Errorf("unable to start command: %v", err) | ||
| } | ||
|
|
||
| h.Lock() | ||
| h.workers[name] = workerCmd{cmd: cmd, created: time.Now()} | ||
| h.Unlock() | ||
|
|
||
| <-outchan | ||
| <-errchan | ||
| if err := cmd.Wait(); err != nil { | ||
| return fmt.Errorf("command failure: %v", err) | ||
| } | ||
|
|
||
| return nil | ||
| } | ||
|
|
||
| type localWorkerLogger struct { | ||
| name string | ||
| } | ||
|
|
||
| func (l localWorkerLogger) Logf(fmt string, values ...interface{}) { | ||
| fmt = strings.TrimSuffix(fmt, "\n") | ||
| log.Info(context.Background(), "hatchery> local> worker> %s> "+fmt, l.name) | ||
| } | ||
|
|
||
| func (l localWorkerLogger) Errorf(fmt string, values ...interface{}) { | ||
| fmt = strings.TrimSuffix(fmt, "\n") | ||
| log.Error(context.Background(), "hatchery> local> worker> %s> "+fmt, l.name) | ||
| } | ||
|
|
||
| func (l localWorkerLogger) Fatalf(fmt string, values ...interface{}) { | ||
| fmt = strings.TrimSuffix(fmt, "\n") | ||
| log.Fatal(context.TODO(), "hatchery> local> worker> %s> "+fmt, l.name) | ||
| } |
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