private async Task FlushAndRestartTimerAsync(EmailLoggerFlushReason reason)
{
if (!_running)
{
return;
}
_updateTimer.Stop();
await FlushAsync(reason);
_updateTimer.Start();
}
private async Task FlushAsync(EmailLoggerFlushReason reason)
{
if (_flushInProgress)
{
return;
}
_flushInProgress = true;
string logMessage;
string subject;
var body = string.Empty;
MailPriority priority;
if (reason == EmailLoggerFlushReason.LoggerStarted)
{
subject = $"{Subject} (Started)";
body = $"Logger started\nLevel: {Level}\nFlush level: {FlushLevel}\nQueue size: {MaxQueueSize}";
priority = MailPriority.Low;
logMessage = "Email logger starting";
}
else if (_messageQueue.IsEmpty)
{
if (!SendEmptyReports)
{
logMessage = "Skipping mail send";
Logger.LogEntry("MAIL LOG", LogLevel.Debug, logMessage);
return;
}
logMessage = "Sending empty email";
subject = $"{Subject} (No new entries)";
body = $"No new entries of level {Level} and higher";
priority = MailPriority.Low;
}
else
{
var counter = 0;
LogEntryEventArgs temp;
while (_messageQueue.TryDequeue(out temp))
{
counter++;
body += $"\n\n{temp.Representation}";
}
logMessage = $"Sending email with {counter} entries";
var alarmStr = string.Empty;
switch (reason)
{
case EmailLoggerFlushReason.ImportantMessage:
alarmStr = ", ALARM CRIT LEVEL";
break;
case EmailLoggerFlushReason.QueueFull:
alarmStr = ", ALARM QUEUE FULL";
break;
case EmailLoggerFlushReason.ForceFlush:
alarmStr = ", FORCE FLUSH";
break;
case EmailLoggerFlushReason.LoggerStarted:
case EmailLoggerFlushReason.RegularPeriodical:
// No additional parts
break;
}
priority = reason == EmailLoggerFlushReason.RegularPeriodical ? MailPriority.Normal : MailPriority.High;
subject = $"{Subject} ({counter} new entries{alarmStr})";
}
Logger.LogEntry("MAIL LOG", LogLevel.Debug, logMessage);
await SendEmailAsync(subject, body, priority);
_flushInProgress = false;
}
