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fix(output): synchronize the prefixed writer buffer #3092

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fix(output): synchronize the prefixed writer buffer #3092

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7 changes: 7 additions & 0 deletions internal/output/prefixed.go
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Original file line number Diff line number Diff line change
Expand Up @@ -38,9 +38,13 @@ type prefixWriter struct {
prefixed *Prefixed
prefix string
buff bytes.Buffer
mutex sync.Mutex
}

func (pw *prefixWriter) Write(p []byte) (int, error) {
pw.mutex.Lock()
defer pw.mutex.Unlock()

n, err := pw.buff.Write(p)
if err != nil {
return n, err
Expand All @@ -50,6 +54,9 @@ func (pw *prefixWriter) Write(p []byte) (int, error) {
}

func (pw *prefixWriter) close() error {
pw.mutex.Lock()
defer pw.mutex.Unlock()

return pw.writeOutputLines(true)
}

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