12 Commits (e980913cd69a85d9644ffd0d0cfeb26633e9f983)

Author	SHA1	Message	Date
beorn7	836f1db04c	Improve MetricsForLabelMatchers ... WIP: This needs more tests. It now gets a from and through value, which it may opportunistically use to optimize the retrieval. With possible future range indices, this could be used in a very efficient way. This change merely applies some easy checks, which should nevertheless solve the use case of heavy rule evaluations on servers with a lot of series churn. Idea is the following: - Only archive series that are at least as old as the headChunkTimeout (which was already extremely unlikely to happen). - Then maintain a high watermark for the last archival, i.e. no archived series has a sample more recent than that watermark. - Any query that doesn't reach to a time before that watermark doesn't have to touch the archive index at all. (A production server at Soundcloud with the aforementioned series churn and heavy rule evaluations spends 50% of its CPU time in archive index lookups. Since rule evaluations usually only touch very recent values, most of those lookup should disappear with this change.) - Federation with a very broad label matcher will profit from this, too. As a byproduct, the un-needed MetricForFingerprint method was removed from the Storage interface.	10 years ago
beorn7	1e13f89039	Return SamplePair istead of *SamplePair consistently ... Formalize ZeroSamplePair as return value for non-existing samples. Change LastSamplePairForFingerprint to return a SamplePair (and not a pointer to it), which saves allocations in a potentially extremely frequent call.	10 years ago
Fabian Reinartz	b35e25a082	Don't federate stale samples	10 years ago
Julius Volz	dac26cef71	Rename global "labels" config option to "external_labels".	10 years ago
beorn7	ca63c05b4e	Fix creation of protobuf fields	10 years ago
Fabian Reinartz	9bbd9264e2	Add global labels to federation	10 years ago
Julius Volz	995d3b831d	Fix most golint warnings. ... This is with `golint -min_confidence=0.5`. I left several lint warnings untouched because they were either incorrect or I felt it was better not to change them at the moment.	10 years ago
Fabian Reinartz	d6b8da8d43	Switch promql types to common/model	10 years ago
Fabian Reinartz	d6d88f8950	Add missing license headers	10 years ago
Fabian Reinartz	47aa0d536c	Use common/expfmt in federation	10 years ago
Fabian Reinartz	306e8468a0	Switch from client_golang/model to common/model	10 years ago
Fabian Reinartz	39a8254963	web: add basic federation support. ... This commit adds a federation handler on /federate. It accepts `match[]` query parameters containing vector selectors. Their intersection determines the in-memory metrics that are returned in the same way as the /metrics endpoint does (modulo sorting).	11 years ago