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Empty log queue on flush and close (#19994)
* Empty log queue on flush and close It is possible for log events to remain in the buffer off the multichannelledlog and thus not be logged despite close or flush. This PR simply adds a function to empty the queue before closing or flushing. (Except when the logger is paused.) Reference #19982 Signed-off-by: Andrew Thornton <art27@cantab.net> * and do similar for ChannelledLog Signed-off-by: Andrew Thornton <art27@cantab.net> Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
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@ -89,8 +89,10 @@ func (l *ChannelledLog) Start() {
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l.closeLogger()
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l.closeLogger()
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return
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return
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}
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}
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l.emptyQueue()
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l.loggerProvider.Flush()
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l.loggerProvider.Flush()
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case <-l.close:
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case <-l.close:
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l.emptyQueue()
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l.closeLogger()
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l.closeLogger()
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return
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return
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}
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}
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@ -111,6 +113,20 @@ func (l *ChannelledLog) LogEvent(event *Event) error {
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}
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}
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}
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}
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func (l *ChannelledLog) emptyQueue() bool {
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for {
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select {
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case event, ok := <-l.queue:
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if !ok {
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return false
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}
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l.loggerProvider.LogEvent(event)
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default:
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return true
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}
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}
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}
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func (l *ChannelledLog) closeLogger() {
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func (l *ChannelledLog) closeLogger() {
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l.loggerProvider.Flush()
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l.loggerProvider.Flush()
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l.loggerProvider.Close()
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l.loggerProvider.Close()
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@ -345,18 +361,41 @@ func (m *MultiChannelledLog) Start() {
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m.closeLoggers()
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m.closeLoggers()
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return
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return
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}
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}
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m.emptyQueue()
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m.rwmutex.RLock()
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m.rwmutex.RLock()
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for _, logger := range m.loggers {
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for _, logger := range m.loggers {
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logger.Flush()
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logger.Flush()
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}
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}
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m.rwmutex.RUnlock()
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m.rwmutex.RUnlock()
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case <-m.close:
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case <-m.close:
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m.emptyQueue()
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m.closeLoggers()
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m.closeLoggers()
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return
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return
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}
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}
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}
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}
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}
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}
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func (m *MultiChannelledLog) emptyQueue() bool {
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for {
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select {
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case event, ok := <-m.queue:
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if !ok {
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return false
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}
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m.rwmutex.RLock()
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for _, logger := range m.loggers {
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err := logger.LogEvent(event)
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if err != nil {
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fmt.Println(err)
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}
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}
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m.rwmutex.RUnlock()
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default:
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return true
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}
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}
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}
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// LogEvent logs an event to this MultiChannelledLog
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// LogEvent logs an event to this MultiChannelledLog
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func (m *MultiChannelledLog) LogEvent(event *Event) error {
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func (m *MultiChannelledLog) LogEvent(event *Event) error {
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select {
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select {
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