Minutes:
- Upstreaming work:
- As logs are more visible by way of Elastic Search, we're finding a lot of problems (Luke).
- Issues with MSO conflating the ONAP transaction ID with its own MSO request IDs.
- Issues with MSO propagation of contextual information to BPMN execution.
- Slow progress due to the usual issues, plus that we're working across multiple ONAP projects, so we don't always have established points of contact, trust, etc.
- Wrappers:
- Reviewed SDC's Logging wrapper. (Luke, but long story short, because see next point).
- SDC switching to EELF in 18.02, apparently.
- Invocation ID:
- We backtracked a bit. Need to review existing MDCs to make sure we haven't already got it covered.
- (I don't know that there's necessarily anything new to add. It's not obvious that the MDCs define a scheme, and inasmuch as some could be put to that purpose
- Confirmed that the EELF audit and metric logs are generally 1:1 with entry and exit, which is very good news. See Format.
- Format:
- Pipes vs. Tabs:
- Historically pipes (or other character sequences) were to sidestep poor escaping support. (That's Luke's argument anyway, and the earlier guidelines stated that pipes and newlines shouldn't be logged).
- It's a matter of taste now that we're escaping.
- Vote seems to be for pipes, and that's fine. TBC next call.
- MDCs:
- Besides making output reliably machine-readable, the other consequential change in the guidelines was that MDCs be serialized as name-value pairs rather than by name.
- This assists indexing, and:
- Is basically necessary, since indexing can't be expected to know every MDC and its position in a serialized string for every logger for every component.
- It makes provider configuration more maintainable.
- This seemed uncontentious for most logs, but there are downstream consequences for AT&T. (Maybe with respect to the audit/metric logs, but maybe also more generally).
- Consistency:
- Reaffirmed that we want identical or near-identical output from all (currently supported) ONAP logging.
- Reaffirmed that we want to support non-Java logging.
- Talked about the implications of using Markers for ENTRY, EXIT, etc. and the possibility of making changes to EELF audit and metric logs so that they're emitted.
- Syslog and streams came up, but only in passing.
- Pipes vs. Tabs:
Actions:
- Talk to Amdocs and AT&T SDC contacts about logging, including switch to EELF. (Luke)
- Revisit existing MDCs and articulate the case for InvocationID (Luke).
- Investigate impact of changing output format, especially MDCs, especially for EELF-specific audit and metric logs (Dave, Lee, Horace).
- Continuation next week.