Support metrics.go
statistics on Loki labels and series API as well.
#4854
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What this PR does / why we need it:
We use
metrics.go
(a convention) to record some useful statistics about each of theinstance
andrange
queries.So that we can query something like
{foo="bar"}|= "metrics.go" |logfmt|latency=slow
Where
latency
comes from statistics recorded inpkg/logql/metric.go
.This PR add support those experience for series and labels API as well.
Examples:
Generates following log lines via
metrics.go
Generates following log lines via
metrics.go
Which issue(s) this PR fixes:
Fixes #4503
Special notes for your reviewer:
Checklist
CHANGELOG.md
about the changes.