prometheus

Commit Graph

Author	SHA1	Message	Date
beorn7	c3c7d44d84	lint: Adjust to the lint warnings raised by current versions of golint-ci We haven't updated golint-ci in our CI yet, but this commit prepares for that. There are a lot of new warnings, and it is mostly because the "revive" linter got updated. I agree with most of the new warnings, mostly around not naming unused function parameters (although it is justified in some cases for documentation purposes – while things like mocks are a good example where not naming the parameter is clearer). I'm pretty upset about the "empty block" warning to include `for` loops. It's such a common pattern to do something in the head of the `for` loop and then have an empty block. There is still an open issue about this: https://github.com/mgechev/revive/issues/810 I have disabled "revive" altogether in files where empty blocks are used excessively, and I have made the effort to add individual `// nolint:revive` where empty blocks are used just once or twice. It's borderline noisy, though, but let's go with it for now. I should mention that none of the "empty block" warnings for `for` loop bodies were legitimate. Signed-off-by: beorn7 <beorn@grafana.com>	2 years ago
Bryan Boreham	3c7de69059	storage: allow re-use of iterators Patterned after `Chunk.Iterator()`: pass the old iterator in so it can be re-used to avoid allocating a new object. (This commit does not do any re-use; it is just changing all the method signatures so re-use is possible in later commits.) Signed-off-by: Bryan Boreham <bjboreham@gmail.com>	2 years ago
Björn Rabenstein	7e42acd3b1	tsdb: Rework iterators (#9877 ) - Pick At... method via return value of Next/Seek. - Do not clobber returned buckets. - Add partial FloatHistogram suppert. Note that the promql package is now _only_ dealing with FloatHistograms, following the idea that PromQL only knows float values. As a byproduct, I have removed the histogramSeries metric. In my understanding, series can have both float and histogram samples, so that metric doesn't make sense anymore. As another byproduct, I have converged the sampleBuf and the histogramSampleBuf in memSeries into one. The sample type stored in the sampleBuf has been extended to also contain histograms even before this commit. Signed-off-by: beorn7 <beorn@grafana.com>	3 years ago
beorn7	c954cd9d1d	Move packages out of deprecated pkg directory This creates a new `model` directory and moves all data-model related packages over there: exemplar labels relabel rulefmt textparse timestamp value All the others are more or less utilities and have been moved to `util`: gate logging modetimevfs pool runtime Signed-off-by: beorn7 <beorn@grafana.com>	3 years ago
Oleg Zaytsev	b1ed4a0a66	LabelNames API with matchers (#9083 ) * Push the matchers for LabelNames all the way into the index. NB This doesn't actually implement it in the index, just plumbs it through for now... Signed-off-by: Tom Wilkie <tom@grafana.com> * Hack it up. Does not work. Signed-off-by: Tom Wilkie <tom@grafana.com> * Revert changes I don't understand Can't see why do we need to hold a mutex on symbols, and the purpose of the LabelNamesFor method. Maybe I'll need to re-add this later. Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com> * Implement LabelNamesFor This method provides the label names that appear in the postings provided. We do that deeper than the label values because we know beforehand that most of the label names we'll be the same across different postings, and we don't want to go down an up looking up the same symbols for all different series. Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com> * Mutex on symbols should be unlocked However, I still don't understand why do we need a mutex here. Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com> * Fix head.LabelNamesFor Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com> * Implement mockIndex LabelNames with matchers Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com> * Nitpick on slice initialisation Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com> * Add tests for LabelNamesWithMatchers Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com> * Fix the mutex mess on head.LabelValues/LabelNames I still don't see why we need to grab that unrelated mutex, but at least now we're grabbing it consistently Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com> * Check error after iterating postings Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com> * Use the error from posting when there was en error in postings Co-authored-by: Ganesh Vernekar <15064823+codesome@users.noreply.github.com> Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com> * Update storage/interface.go comment Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com> Co-authored-by: Ganesh Vernekar <15064823+codesome@users.noreply.github.com> * Update tsdb/index/index.go comment Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com> Co-authored-by: Ganesh Vernekar <15064823+codesome@users.noreply.github.com> * Update tsdb/index/index.go wrapped error msg Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com> Co-authored-by: Ganesh Vernekar <15064823+codesome@users.noreply.github.com> * Update tsdb/index/index.go wrapped error msg Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com> Co-authored-by: Ganesh Vernekar <15064823+codesome@users.noreply.github.com> * Update tsdb/index/index.go warpped error msg Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com> Co-authored-by: Ganesh Vernekar <15064823+codesome@users.noreply.github.com> * Remove unneeded comment Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com> * Add testcases for LabelNames w/matchers in api.go Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com> * Use t.Cleanup() instead of defer in tests Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com> Co-authored-by: Tom Wilkie <tom@grafana.com> Co-authored-by: Ganesh Vernekar <15064823+codesome@users.noreply.github.com>	3 years ago
Tom Wilkie	7369561305	Combine Appender.Add and AddFast into a single Append method. (#8489 ) This moves the label lookup into TSDB, whilst still keeping the cached-ref optimisation for repeated Appends. This makes the API easier to consume and implement. In particular this change is motivated by the scrape-time-aggregation work, which I don't think is possible to implement without it as it needs access to label values. Signed-off-by: Tom Wilkie <tom.wilkie@gmail.com>	4 years ago
Mauro Stettler	7715fe3219	Add matchers to LabelValues() call (#8400 ) * Accept matchers in querier LabelValues() Signed-off-by: Mauro Stettler <mauro.stettler@gmail.com> * create matcher to only select metrics which have searched label Signed-off-by: Mauro Stettler <mauro.stettler@gmail.com> * test case for merge querier with matchers Signed-off-by: Mauro Stettler <mauro.stettler@gmail.com> * test LabelValues with matchers on head Signed-off-by: Mauro Stettler <mauro.stettler@gmail.com> * add test for LabelValues on block Signed-off-by: Mauro Stettler <mauro.stettler@gmail.com> * formatting fix Signed-off-by: Mauro Stettler <mauro.stettler@gmail.com> * Add comments Signed-off-by: Mauro Stettler <mauro.stettler@gmail.com> * add missing lock release Signed-off-by: Mauro Stettler <mauro.stettler@gmail.com> * remove unused parameter Signed-off-by: Mauro Stettler <mauro.stettler@gmail.com> * Benchmarks for LabelValues() methods on block/head Signed-off-by: Mauro Stettler <mauro.stettler@gmail.com> * Better comment Co-authored-by: Julien Pivotto <roidelapluie@gmail.com> Signed-off-by: Mauro Stettler <mauro.stettler@gmail.com> * update comment Signed-off-by: Mauro Stettler <mauro.stettler@gmail.com> * minor refactor make code cleaner Signed-off-by: Mauro Stettler <mauro.stettler@gmail.com> * better comments Signed-off-by: Mauro Stettler <mauro.stettler@gmail.com> * fix expected errors in test Signed-off-by: Mauro Stettler <mauro.stettler@gmail.com> * Deleting parameter which can only be empty Co-authored-by: Ganesh Vernekar <15064823+codesome@users.noreply.github.com> Signed-off-by: Mauro Stettler <mauro.stettler@gmail.com> * fix comments Signed-off-by: Mauro Stettler <mauro.stettler@gmail.com> * remove unnecessary lock Signed-off-by: Mauro Stettler <mauro.stettler@gmail.com> * only lookup label value if label name was looked up Signed-off-by: Mauro Stettler <mauro.stettler@gmail.com> * Return error when there is one Co-authored-by: Ganesh Vernekar <15064823+codesome@users.noreply.github.com> Signed-off-by: Mauro Stettler <mauro.stettler@gmail.com> * Call .Get() on decoder before checking errors Signed-off-by: Mauro Stettler <mauro.stettler@gmail.com> * only lock head.symMtx when necessary Signed-off-by: Mauro Stettler <mauro.stettler@gmail.com> * remove unnecessary delete() Signed-off-by: Mauro Stettler <mauro.stettler@gmail.com> * re-use code instead of duplicating it Signed-off-by: Mauro Stettler <mauro.stettler@gmail.com> * Consistently return error from LabelValueFor() Signed-off-by: Mauro Stettler <mauro.stettler@gmail.com> * move helper func from util.go to querier.go Signed-off-by: Mauro Stettler <mauro.stettler@gmail.com> * Fix test expectation Signed-off-by: Mauro Stettler <mauro.stettler@gmail.com> Co-authored-by: Ganesh Vernekar <15064823+codesome@users.noreply.github.com> * ensure result de-duplication and sorting works Signed-off-by: Mauro Stettler <mauro.stettler@gmail.com> * return named error from LabelValueFor() Signed-off-by: Mauro Stettler <mauro.stettler@gmail.com> Co-authored-by: Julien Pivotto <roidelapluie@gmail.com> Co-authored-by: Ganesh Vernekar <15064823+codesome@users.noreply.github.com>	4 years ago
Julien Pivotto	6c56a1faaa	Testify: move to require (#8122 ) * Testify: move to require Moving testify to require to fail tests early in case of errors. Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu> * More moves Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu>	4 years ago
Julien Pivotto	1282d1b39c	Refactor test assertions (#8110 ) * Refactor test assertions This pull request gets rid of assert.True where possible to use fine-grained assertions. Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu>	4 years ago
Julien Pivotto	4e5b1722b3	Move away from testutil, refactor imports (#8087 ) Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu>	4 years ago
Bartlomiej Plotka	28c5cfaf0d	tsdb: Moved code merge series and iterators to differen files; cleanup. No functional changes just move! (#7714 ) I did not want to move those in previous PR to make it easier to review. Now small cleanup time for readability. (: ## Changes * Merge series goes to `storage/merge.go` leaving `fanout.go` for just fanout code. * Moved `fanout test` code from weird separate package to storage. * Unskiped one test: TestFanout_SelectSorted/chunk_querier * Moved block series set codes responsible for querying blocks to `querier.go` from `compact.go` Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com>	4 years ago
Bartlomiej Plotka	e6d7cc5fa4	tsdb: Added ChunkQueryable implementations to db; unified MergeSeriesSets and vertical to single struct. (#7069 ) * tsdb: Added ChunkQueryable implementations to db; unified compactor, querier and fanout block iterating. Chained to https://github.com/prometheus/prometheus/pull/7059 * NewMerge(Chunk)Querier now takies multiple primaries allowing tsdb DB code to use it. * Added single SeriesEntry / ChunkEntry for all series implementations. * Unified all vertical, and non vertical for compact and querying to single merge series / chunk sets by reusing VerticalSeriesMergeFunc for overlapping algorithm (same logic as before) * Added block (Base/Chunk/)Querier for block querying. We then use populateAndTomb(Base/Chunk/) to iterate over chunks or samples. * Refactored endpoint tests and querier tests to include subtests. Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com> * Addressed comments from Brian and Beorn. Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com> * Fixed snapshot test and added chunk iterator support for DBReadOnly. Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com> * Fixed race when iterating over Ats first. Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com> * Fixed tests. Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com> * Fixed populate block tests. Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com> * Fixed endpoints test. Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com> * Fixed test. Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com> * Added test & fixed case of head open chunk. Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com> * Fixed DBReadOnly tests and bug producing 1 sample chunks. Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com> * Added cases for partial block overlap for multiple full chunks. Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com> * Added extra tests for chunk meta after compaction. Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com> * Fixed small vertical merge bug and added more tests for that. Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com>	4 years ago
Bartlomiej Plotka	b788986717	storage: Adjusted fully storage layer support for chunk iterators: Remote read client, readyStorage, fanout. (#7059 ) * Fixed nits introduced by https://github.com/prometheus/prometheus/pull/7334 * Added ChunkQueryable implementation to fanout and readyStorage. * Added more comments. * Changed NewVerticalChunkSeriesMerger to CompactingChunkSeriesMerger, removed tiny interface by reusing VerticalSeriesMergeFunc for overlapping algorithm for both chunks and series, for both querying and compacting (!) + made sure duplicates are merged. * Added ErrChunkSeriesSet * Added Samples interface for seamless []promb.Sample to []tsdbutil.Sample conversion. * Deprecating non chunks serieset based StreamChunkedReadResponses, added chunk one. * Improved tests. * Split remote client into Write (old storage) and read. * Queryable client is now SampleAndChunkQueryable. Since we cannot use nice QueryableFunc I moved all config based options to sampleAndChunkQueryableClient to aboid boilerplate. In next commit: Changes for TSDB. Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com>	4 years ago
Kemal Akkoyun	66dfb951c4	: Consistent Error/Warning handling for SeriesSet iterator: Allowing Async Select (#7251 ) Add errors and Warnings to SeriesSet Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com> * Change Querier interface and refactor accordingly Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com> * Refactor promql/engine to propagate warnings at eval stage Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com> * Address review issues Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com> * Make sure all the series from all Selects are pre-advanced Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com> * Address review issues Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com> * Separate merge series sets Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com> * Clean Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com> * Refactor merge querier failure handling Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com> * Refactored and simplified fanout with improvements from incoming chunk iterator PRs. * Secondary logic is hidden, instead of weird failed series set logic we had. * Fanout is well commented * Fanout closing record all errors * MergeQuerier improved API (clearer) * deferredGenericMergeSeriesSet is not needed as we return no samples anyway for failed series sets (next = false). Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com> * Fix formatting Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com> * Fix CI issues Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com> * Added final tests for error handling. Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com> * Addressed Brian's comments. * Moved hints in populate to be allocated only when needed. * Used sync.Once in secondary Querier to achieve all-or-nothing partial response logic. * Select after first Next is done will panic. NOTE: in lazySeriesSet in theory we could just panic, I think however we can totally just return error, it will panic in expand anyway. Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com> * Utilize errWithWarnings Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com> * Fix recently introduced expansion issue Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com> * Add tests for secondary querier error handling Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com> * Implement lazy merge Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com> * Add name to test cases Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com> * Reorganize Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com> * Address review comments Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com> * Address review comments Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com> * Remove redundant warnings Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com> * Fix rebase mistake Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com> Co-authored-by: Bartlomiej Plotka <bwplotka@gmail.com>	5 years ago
Marco Pracucci	bc1d7d7f27	Fixed incorrect query results caused by buffer reuse in merge adapter (#7361 ) Signed-off-by: Marco Pracucci <marco@pracucci.com>	5 years ago
Bartlomiej Plotka	d5c33877f9	storage: Added Chunks{Queryable/Querier/SeriesSet/Series/Iteratable. Added generic Merge{SeriesSet/Querier} implementation. (#7005 ) * storage: Added Chunks{Queryable/Querier/SeriesSet/Series/Iteratable. Added generic Merge{SeriesSet/Querier} implementation. ## Rationales: In many places (e.g. chunk Remote read, Thanos Receive fetching chunk from TSDB), we operate on encoded chunks not samples. This means that we unnecessary decode/encode, wasting CPU, time and memory. This PR adds chunk iterator interfaces and makes the merge code to be reused between both seriesSets I will make the use of it in following PR inside tsdb itself. For now fanout implements it and mergers. All merges now also allows passing series mergers. This opens doors for custom deduplications other than TSDB vertical ones (e.g. offline one we have in Thanos). ## Changes * Added Chunk versions of all iterating methods. It all starts in Querier/ChunkQuerier. The plan is that Storage will implement both chunked and samples. * Added Seek to chunks.Iterator interface for iterating over chunks. * NewMergeChunkQuerier was added; Both this and NewMergeQuerier are now using generigMergeQuerier to share the code. Generic code was added. * Improved tests. * Added some TODO for further simplifications in next PRs. Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com> * Addressed Brian's comments. Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com> * Moved s/Labeled/SeriesLabels as per Krasi suggestion. Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com> * Addressed Krasi's comments. Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com> * Second iteration of Krasi comments. Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com> * Another round of comments. Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com>	5 years ago
Bartlomiej Plotka	34426766d8	Unify Iterator interfaces. All point to storage now. This is part of https://github.com/prometheus/prometheus/pull/5882 that can be done to simplify things. All todos I added will be fixed in follow up PRs. * querier.Querier, querier.Appender, querier.SeriesSet, and querier.Series interfaces merged with storage interface.go. All imports that. * querier.SeriesIterator replaced by chunkenc.Iterator * Added chunkenc.Iterator.Seek method and tests for xor implementation (?) * Since we properly handle SelectParams for Select methods I adjusted min max based on that. This should help in terms of performance for queries with functions like offset. * added Seek to deletedIterator and test. * storage/tsdb was removed as it was only a unnecessary glue with incompatible structs. No logic was changed, only different source of abstractions, so no need for benchmarks. Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com>	5 years ago
Chris Marchbanks	529ccff07b	Remove all usages of stretchr/testify Signed-off-by: Chris Marchbanks <csmarchbanks@gmail.com>	5 years ago
mknapphrt	f0e9196dca	Return warnings on a remote read fail (#4832 ) Signed-off-by: Mark Knapp <mknapp@hudson-trading.com>	6 years ago
Brian Brazil	78efdc6d6b	Avoid infinite loop on duplicate NaN values. (#4275 ) Fixes #4254 NaNs don't equal themselves, so a duplicate NaN would always hit the break statement and never get popped. We should not be returning multiple data point for the same timestamp, so don't compare values at all. Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>	7 years ago
Tom Wilkie	ba418780be	Dedupe samples in the mergeIterator. Signed-off-by: Tom Wilkie <tom.wilkie@gmail.com>	7 years ago
Tom Wilkie	3dc5b8eef5	Use sub benchmarks.	7 years ago
Tom Wilkie	da29c09dca	Some benchmarks for the mergeSeries set.	7 years ago
Ed Schouten	bb724f1bef	Deprecate DeduplicateSeriesSet() in favor of NewMergeSeriesSet(). Federation makes use of dedupedSeriesSet to merge SeriesSets for every query into one output stream. If many match[] arguments are provided, many dedupedSeriesSet objects will get chained. This has the downside of causing a potential O(nk) running time, where n is the number of series and k the number of match[] arguments. In the mean time, the storage package provides a mergeSeriesSet that accomplishes the same with an O(nlog(k)) running time by making use of a binary heap. Let's just get rid of dedupedSeriesSet and change all existing callers to use mergeSeriesSet.	7 years ago
Julius Volz	9ef8518b37	Remove "package remote" garbage from license headers (#3304 )	7 years ago
Tom Wilkie	98ac07f86a	Add unit test for the merging on the read path.	7 years ago

26 Commits (47b613a3cb6ea0ef83d665882a788a864aa4fcfe)