[r157] Traceql instant query #3884
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* first working draft * Cleanup request time manipulation code * comment * Update after merge, oops restore accidentally deleted query metrics * Fix request clone for logging * tweak method signature * changelog * Make TrimToOverlap aware of instant query, fix alignment issue on generator complete blocks * Fix test * Add streaming version of metrics query instant, add to cli, fix timestamp handling in metrics diff detection * Fix typo in QueryInstantResponse name * lint * docs * lint, rename (cherry picked from commit 7f788b3)
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Backport 7f788b3 from #3859
What this PR does:
Adds a new api
/api/metrics/querywhich performs an instant query instead of a range query. Includes both http and grpc streaming versions. The parameters are (1) query, (2) start, and (3) end. Wanted to match the Prometheus instant api, but for now we can't. TraceQL is missing the custom interval tidbits like[1h], so it needs the full time range (start and end). I think this is fine.This new api is actually the same, conceptually and implementation-wise, as doing a range query with 1 step. It reuses the existing query_range sharder, pipeline, combiner, etc, and does a transformation of the response at the end.
Extends the tempo-cli command
tempo-cli query metricsto take an--instantparameter to call the new apis. Works with both http and --use-grpc streaming version.Also tried to cleanup/solidify the time range handling.
Which issue(s) this PR fixes:
Fixes #
Checklist
CHANGELOG.mdupdated - the order of entries should be[CHANGE],[FEATURE],[ENHANCEMENT],[BUGFIX]