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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,64 @@ | ||
| package api | ||
|
|
||
| import ( | ||
| "bufio" | ||
| "context" | ||
| "fmt" | ||
| ) | ||
|
|
||
| // Monitor returns a channel that outputs strings containing the log messages | ||
| // coming from the server. | ||
| func (c *Sys) Monitor(ctx context.Context, logLevel string) (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) | ||
| } | ||
|
|
||
| resp, err := c.c.RawRequestWithContext(ctx, r) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| logCh := make(chan string, 64) | ||
|
|
||
| go func() { | ||
| scanner := bufio.NewScanner(resp.Body) | ||
| droppedCount := 0 | ||
|
|
||
| defer close(logCh) | ||
| defer resp.Body.Close() | ||
|
|
||
| for { | ||
| if ctx.Err() != nil { | ||
| return | ||
| } | ||
|
|
||
| if !scanner.Scan() { | ||
| return | ||
| } | ||
|
|
||
| logMessage := scanner.Text() | ||
|
|
||
| if droppedCount > 0 { | ||
| select { | ||
| case logCh <- fmt.Sprintf("Monitor dropped %d logs during monitor request\n", droppedCount): | ||
| droppedCount = 0 | ||
| default: | ||
| droppedCount++ | ||
| continue | ||
| } | ||
| } | ||
|
|
||
| select { | ||
| case logCh <- logMessage: | ||
| default: | ||
| droppedCount++ | ||
| } | ||
| } | ||
| }() | ||
|
|
||
| return logCh, nil | ||
| } |
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