feat(metrics-es): allow logging metrics to JSON file with write-to
option
#2293
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To facilitate scrape-based metrics, this commit allows Apiman's ES metrics (as JSON) to be written
to a log file. The specific behaviour is controlled via whatever logging framework is used.
It is possible to write to any of:
remote
(ES server),log
The configuration provided in this commit calls the output
metrics.log
, but we the user can changethis, as per their preferences. Async logging is used, where possible, to mitigate the impact on
performance, as this is likely to generate a considerable number of log writes.
Thanks again to Terry, Russel, Joe, Colin, LN, Shivraj, and the rest of the team.
Fixes: #2100