Add more metrics to prometheus endpoint #263
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This change: - Adds server metrics to prometheus endpoint. - Adds database metrics to prometheus endpoint. - Adds pools metrics to prometheus endpoint. - Change metrics name to have a prefix of (stats|pools|databases|servers).
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Contains chore(deps): bump tokio from 1.24.1 to 1.24.2 (postgresml#286) Log error messages for network failures (postgresml#289) Removes message cloning operation required for query router (postgresml#285) Add more metrics to prometheus endpoint (postgresml#263)
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Currently prometheus endpoint only outputs metrics related with 'stats' (those shown in a SHOW STATS admin command).
This change:
This change is not backward compatible as metric names are now prefixed. Maybe we can leave current metric names 'as is' and add prefixes only for the new stuff, but I like it more with everything prefixed.
/cc @dat2