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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,64 @@ | ||
| package api | ||
|
|
||
| import ( | ||
| "bufio" | ||
| "context" | ||
| ) | ||
|
|
||
| func (c *Sys) Monitor(logLevel string, stopCh chan struct{}) (chan string, error) { | ||
| r := c.c.NewRequest("GET", "/v1/sys/monitor") | ||
|
|
||
| if logLevel == "" { | ||
| r.Params.Add("log_level", "INFO") | ||
| } else { | ||
| r.Params.Add("log_level", logLevel) | ||
| } | ||
|
|
||
| ctx, cancelFunc := context.WithCancel(context.Background()) | ||
| resp, err := c.c.RawRequestWithContext(ctx, r) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| logCh := make(chan string, 64) | ||
| go func() { | ||
| defer resp.Body.Close() | ||
| scanner := bufio.NewScanner(resp.Body) | ||
|
|
||
| for { | ||
| select { | ||
| case <-stopCh: | ||
| close(logCh) | ||
| cancelFunc() | ||
| return | ||
| case <-ctx.Done(): | ||
| stopCh <- struct{}{} | ||
| close(logCh) | ||
| cancelFunc() | ||
| return | ||
| default: | ||
| } | ||
|
|
||
| if scanner.Scan() { | ||
| // An empty string signals to the caller that | ||
| // the scan is done, so make sure we only emit | ||
| // that when the scanner says it's done, not if | ||
| // we happen to ingest an empty line. | ||
| if text := scanner.Text(); text != "" { | ||
| logCh <- text | ||
| } else { | ||
| logCh <- " " | ||
| } | ||
| } else { | ||
| // If Scan() returns false, that means the context deadline was exceeded, so | ||
| // terminate this routine and start a new request. | ||
| stopCh <- struct{}{} | ||
| close(logCh) | ||
| cancelFunc() | ||
| return | ||
| } | ||
| } | ||
| }() | ||
|
|
||
| return logCh, nil | ||
| } |
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