Page Comparison

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//TODOfinal Logger logger = LoggerFactory.getLogger(this.getClass());
final Marker entry = MarkerFactory.getDetachedMarker("ENTRY");
logger.debug(entry, "Entering.");

Marker - EXIT

This should be reported as late in invocation as possible, immediately before unsetting the RequestID and InvocationID MDCs.

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//TODOfinal Logger logger = LoggerFactory.getLogger(this.getClass());
final Marker entry = MarkerFactory.getDetachedMarker("EXIT");
logger.debug(entry, "Exiting.");

Marker - INVOKE

This should be reported by the caller of another ONAP component via REST, including a newly allocated InvocationID, which will be passed to the caller. 

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ONAP needs to strike a balance between human-readable and machine-readable logs. This means:

• The use of pipe tab (|\t) as a delimiter.
• Escaping all messages, exceptions, MDC values, Markers, etc. to replace pipe (|) in tabs in their content.
• Escaping all newlines with \n so that each entry is on one line. 

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