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Cherry-pick #12125 to 6.8: Fix goroutine leak on initialization failures of log input #12144

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merged 2 commits into from
May 10, 2019
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Cherry-pick #12125 to 6.8: Fix goroutine leak on initialization failures of log input #12144

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f870930
Fix goroutine leak on initialization failures of log input (#12125)
jsoriano May 9, 2019
f837a8f
Merge remote-tracking branch 'origin/6.8' into backport_12125_6.8
jsoriano May 10, 2019
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1 change: 1 addition & 0 deletions CHANGELOG.next.asciidoc
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Original file line number Diff line number Diff line change
Expand Up @@ -44,6 +44,7 @@ https://github.com/elastic/beats/compare/v6.7.2...6.8[Check the HEAD diff]

- Fix goroutine leak happening when harvesters are dynamically stopped. {pull}11263[11263]
- Fix initialization of the TCP input logger. {pull}11605[11605]
- Fix goroutine leak caused on initialization failures of log input. {pull}12125[12125]
- Fix memory leak in Filebeat pipeline acker. {pull}12063[12063]

*Heartbeat*
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9 changes: 9 additions & 0 deletions filebeat/input/log/input.go
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Expand Up @@ -76,6 +76,12 @@ func NewInput(
outlet channel.Connector,
context input.Context,
) (input.Input, error) {
cleanupNeeded := true
cleanupIfNeeded := func(f func() error) {
if cleanupNeeded {
f()
}
}

// Note: underlying output.
// The input and harvester do have different requirements
Expand All @@ -87,11 +93,13 @@ func NewInput(
if err != nil {
return nil, err
}
defer cleanupIfNeeded(out.Close)

// stateOut will only be unblocked if the beat is shut down.
// otherwise it can block on a full publisher pipeline, so state updates
// can be forwarded correctly to the registrar.
stateOut := channel.CloseOnSignal(channel.SubOutlet(out), context.BeatDone)
defer cleanupIfNeeded(stateOut.Close)

meta := context.Meta
if len(meta) == 0 {
Expand Down Expand Up @@ -137,6 +145,7 @@ func NewInput(

logp.Info("Configured paths: %v", p.config.Paths)

cleanupNeeded = false
return p, nil
}

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