Error messages generated by the Semantic Logging Application Block

The Semantic Logging Application Block uses the events listed in the following table to notify you of any problems it encounters at runtime.

Event Id	Level	Keywords	Description
1	Error	Sink	Trace event for logging any unhandled exception that occurs in a custom sink.
2	Error	Formatter	Trace event for logging any unhandled exception that occurs in a custom formatter.
100	Error	Sink	The SQL Database sink could not open the configured database.
101	Error	Sink	The SQL Database sink could not write to the configured database.
102	Warning	Sink	The SQL Database sink could not publish messages and discarded them.
103	Warning	Sink	The SQL Database sink could not publish an individual message and discarded it.
200	Critical	Sink	The Console sink could not write to the console.
300	Critical	Sink	The Flat File sink could not write to the configured file.
400	Critical	Sink	The Rolling Flat File sink could not write to the configured file.
500	Critical	Sink	The Azure Table Storage sink could not publish to the configured Azure storage table.
501	Critical	Sink	The Azure Table Storage sink could not create the configured Azure storage table.
502	Warning	Sink	The Azure Table Storage sink encountered a transient error.
503	Critical	Sink	The Azure Table Storage sink could not create the entity.
504	Error	Sink	The Azure Table Storage sink could not publish messages and discarded them.
700	Warning	Formatting	The block failed to serialize a trace message to JSON.
701	Warning	Formatting	The block failed to write a JSON trace message.
702	Warning	Formatting	The block failed to write an XML trace message.
703	Warning	Formatting	The block failed to write a text trace message.
800	Critical	TraceEvent	The block encountered an unobserved task exception when processing trace messages.
801	Error	TraceEvent	The block encountered an error during the serial processing of trace messages.
802	Informational	TraceEvent	The block removed the ETW session
803	Error	TraceEvent	The block encountered an error when it attempted to reconfigure the ETW session.
804	Informational	TraceEvent	The block successfully reconfigured the ETW session.
805	Warning	TraceEvent	The new configuration was partially successful. Check logs for further error details.
806	Warning	TraceEvent	Some trace messages will be lost because the buffer in the ETW session is full.
807	Warning	TraceEvent	Reports the number of messages the trace event service lost.
808	Error	TraceEvent	A fault occurred shutting down the trace event service.
809	Error	TraceEvent	A fault occurred loading the trace event service configuration file.
810	Critical	Sink	An improperly generated manifest was received.
811	[Depends on the event source]	[Depends on the event source]	An out-of-band event notification was received from an event source not defined in the block. For example, the sampling parameters were invalid.
900	Warning	Sink	The capacity of the block’s internal buffer is exceeded.
901	Informational	Sink	The capacity of the block’s internal buffer is restored.
902	Warning	Sink	Some events could not be sent to the event sink and will be lost. Reports the number of lost events.
903	Critical	Sink	The block detected an unobserved exception and restarted the event publisher task.
1000	Error	Sink	Failed to parse the source manifest from ETW.
1100	Critical	Sink	Failed to format an entry as a string in a formatter.
1101	Warning	Sink	Failed to perform the color mapping in a formatter.

If you are running the Out-of-Process Host application as a Windows service, it writes these error messages to the Windows Application Event Log from the source “Enterprise Library Semantic Logging Service.”

If you are running the Out-of-Process Host application as a console application, it displays these messages in the console window.

If you are using the Semantic Logging Application Block in-process, you should create and enable an event listener for the SemanticLoggingEventSource class as shown in the following code:

myEventListener.EnableEvents(
  SemanticLoggingEventSource.Log, EventLevel.LogAlways, Keywords.All);

For more information about creating and configuring event listeners, see the topic Key scenarios for the Semantic Logging Application Block.

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