func (sinkManager *SinkManager) SendSyslogErrorToLoggregator(errorMsg, appId string) {
sinkManager.logger.Warnf(errorMsg)
logMessage, err := logmessage.GenerateMessage(logmessage.LogMessage_ERR, errorMsg, appId, "LGR")
if err == nil {
sinkManager.errorChannel <- logMessage
} else {
sinkManager.logger.Warnf("Error marshalling message: %v", err)
}
}
func (messageRouter *messageRouter) sendLoggregatorErrorMessage(errorMsg, appId string) {
messageRouter.logger.Warnf(errorMsg)
logMessage, err := logmessage.GenerateMessage(logmessage.LogMessage_ERR, errorMsg, appId, "LGR")
if err == nil {
messageRouter.errorChannel <- logMessage
} else {
messageRouter.logger.Warnf("Error marshalling message: %v", err)
}
}
func (s *SyslogSink) Run() {
s.logger.Infof("Syslog Sink %s: Running.", s.drainUrl)
defer s.logger.Errorf("Syslog Sink %s: Stopped. This should never happen", s.drainUrl)
backoffStrategy := newExponentialRetryStrategy()
numberOfTries := 0
buffer := runTruncatingBuffer(s, 100, s.Logger())
for {
s.logger.Debugf("Syslog Sink %s: Starting loop. Current backoff: %v", s.drainUrl, backoffStrategy(numberOfTries))
select {
case <-s.disconnectChannel:
return
case <-time.After(backoffStrategy(numberOfTries)):
}
if !s.syslogWriter.IsConnected() {
s.logger.Debugf("Syslog Sink %s: Not connected. Trying to connect.", s.drainUrl)
err := s.syslogWriter.Connect()
if err != nil {
errorMsg := fmt.Sprintf("Syslog Sink %s: Error when dialing out. Backing off for %v. Err: %v", s.drainUrl, backoffStrategy(numberOfTries+1), err)
numberOfTries++
s.logger.Warnf(errorMsg)
logMessage, err := logmessage.GenerateMessage(logmessage.LogMessage_ERR, errorMsg, s.appId, "LGR")
if err == nil {
s.errorChannel <- logMessage
} else {
s.logger.Warnf("Error marshalling message: %v", err)
}
continue
}
s.logger.Infof("Syslog Sink %s: successfully connected.", s.drainUrl)
s.syslogWriter.SetConnected(true)
numberOfTries = 0
defer s.syslogWriter.Close()
}
s.logger.Debugf("Syslog Sink %s: Waiting for activity\n", s.drainUrl)
message, ok := <-buffer.GetOutputChannel()
if !ok {
s.logger.Debugf("Syslog Sink %s: Closed listener channel detected. Closing.\n", s.drainUrl)
return
}
s.logger.Debugf("Syslog Sink %s: Got %d bytes. Sending data\n", s.drainUrl, message.GetRawMessageLength())
var err error
switch message.GetLogMessage().GetMessageType() {
case logmessage.LogMessage_OUT:
_, err = s.syslogWriter.WriteStdout(message.GetLogMessage().GetMessage(), message.GetLogMessage().GetSourceName(), *message.GetLogMessage().Timestamp)
case logmessage.LogMessage_ERR:
_, err = s.syslogWriter.WriteStderr(message.GetLogMessage().GetMessage(), message.GetLogMessage().GetSourceName(), *message.GetLogMessage().Timestamp)
}
if err != nil {
s.logger.Debugf("Syslog Sink %s: Error when trying to send data to sink. Backing off. Err: %v\n", s.drainUrl, err)
numberOfTries++
s.syslogWriter.SetConnected(false)
} else {
s.logger.Debugf("Syslog Sink %s: Successfully sent data\n", s.drainUrl)
numberOfTries = 0
atomic.AddUint64(s.sentMessageCount, 1)
atomic.AddUint64(s.sentByteCount, uint64(message.GetRawMessageLength()))
}
}
}
