prometheus

Commit Graph

Author	SHA1	Message	Date
Arthur Silva Sens	5082655392	Append Created Timestamps (#12733 ) * Append created timestamps. Signed-off-by: Arthur Silva Sens <arthur.sens@coralogix.com> * Log when created timestamps are ignored Signed-off-by: Arthur Silva Sens <arthur.sens@coralogix.com> * Proposed changes to Append CT PR. Changes: * Changed textparse Parser interface for consistency and robustness. * Changed CT interface to be more explicit and handle validation. * Simplified test, change scrapeManager to allow testability. * Added TODOs. Signed-off-by: bwplotka <bwplotka@gmail.com> * Updates. Signed-off-by: bwplotka <bwplotka@gmail.com> * Addressed comments. Signed-off-by: bwplotka <bwplotka@gmail.com> * Refactor head_appender test Signed-off-by: Arthur Silva Sens <arthur.sens@coralogix.com> * Fix linter issues Signed-off-by: Arthur Silva Sens <arthur.sens@coralogix.com> * Use model.Sample in head appender test Signed-off-by: Arthur Silva Sens <arthur.sens@coralogix.com> --------- Signed-off-by: Arthur Silva Sens <arthur.sens@coralogix.com> Signed-off-by: bwplotka <bwplotka@gmail.com> Co-authored-by: bwplotka <bwplotka@gmail.com>	12 months ago
Filip Petkovski	9008271df5	Use cap to determine slice capacity Signed-off-by: Filip Petkovski <filip.petkovsky@gmail.com>	12 months ago
Filip Petkovski	10a82f87fd	Enable reusing memory when converting between histogram types The 'ToFloat' method on integer histograms currently allocates new memory each time it is called. This commit adds an optional *FloatHistogram parameter that can be used to reuse span and bucket slices. It is up to the caller to make sure the input float histogram is not used anymore after the call. Signed-off-by: Filip Petkovski <filip.petkovsky@gmail.com>	12 months ago
Björn Rabenstein	85078b968f	Merge pull request #13208 from linasm/panic-free-float-histogram-add-sub FloatHistogram.Add/Sub: handle any schema change	12 months ago
Björn Rabenstein	de1ec731c7	Merge pull request #13212 from linasm/optimize-floatBucketIterator-for-common-case Histograms: optimize floatBucketIterator for common case	12 months ago
Linas Medziunas	bd895baefc	FloatHistogram.Add/Sub: handle any schema change Signed-off-by: Linas Medziunas <linas.medziunas@gmail.com>	12 months ago
Matthieu MOREL	9c4782f1cc	golangci-lint: enable testifylint linter (#13254 ) Signed-off-by: Matthieu MOREL <matthieu.morel35@gmail.com>	12 months ago
Arve Knudsen	237bfea46b	`chunks.Reader`: Fix typo in ChunkOrIterable doc string. Also fix comment typo in `FloatHistogram.Sub`. Signed-off-by: Arve Knudsen <arve.knudsen@gmail.com>	12 months ago
Oleksandr Redko	2a75604f8e	Enable default revive rules (#13068 ) Signed-off-by: Oleksandr Redko <Oleksandr_Redko@epam.com>	1 year ago
Linas Medziunas	048886ae8a	Histograms: optimize floatBucketIterator for common case Signed-off-by: Linas Medziunas <linas.medziunas@gmail.com>	1 year ago
Linas Medziunas	49613823f8	Reuse slices in [Float]Histogram.ReduceResolution Signed-off-by: Linas Medziunas <linas.medziunas@gmail.com>	1 year ago
Björn Rabenstein	a6d4b8d97b	Merge pull request #13190 from linasm/fix-float-histogram-add-sub-mutating-argument Fix FloatHistogram.Add/Sub mutating its argument	1 year ago
Linas Medziunas	f99ecc376e	Fix FloatHistogram.Add/Sub mutating its argument Signed-off-by: Linas Medziunas <linas.medziunas@gmail.com>	1 year ago
Linas Medziunas	ea1862aab4	Explicit schema check in [Float]Histogram.ReduceResolution Signed-off-by: Linas Medziunas <linas.medziunas@gmail.com>	1 year ago
Bryan Boreham	f0e1b592ab	Scraping: use slices.sort for exemplars The sort implementation using Go generics is used everywhere else in Prometheus. Signed-off-by: Bryan Boreham <bjboreham@gmail.com>	1 year ago
Bryan Boreham	a3e02f35d6	labels: extract common code between slice and stringlabels This reduces bulk and should avoid issues if a fix is made in one file and not the other. A few methods now call `Range()` instead of `range`, but nothing performance-sensitive. Signed-off-by: Bryan Boreham <bjboreham@gmail.com>	1 year ago
zenador	32ee1b15de	Fix error on ingesting out-of-order exemplars (#13021 ) Fix and improve ingesting exemplars for native histograms. See code comment for a detailed explanation of the algorithm. Note that this changes the current behavior for all kind of samples slightly: We now allow exemplars with the same timestamp as during the last scrape if the value or the labels have changed. Also note that we now do not ingest exemplars without timestamps for native histograms anymore. Signed-off-by: Jeanette Tan <jeanette.tan@grafana.com> Signed-off-by: György Krajcsovits <gyorgy.krajcsovits@grafana.com> Co-authored-by: Björn Rabenstein <github@rabenste.in> --------- Signed-off-by: Jeanette Tan <jeanette.tan@grafana.com> Signed-off-by: György Krajcsovits <gyorgy.krajcsovits@grafana.com> Signed-off-by: zenador <zenador@users.noreply.github.com> Co-authored-by: György Krajcsovits <gyorgy.krajcsovits@grafana.com> Co-authored-by: Björn Rabenstein <github@rabenste.in>	1 year ago
Bryan Boreham	1bfb3ed062	Labels: reduce allocations when creating from TSDB WAL (#13044 ) * Labels: reduce allocations when creating from TSDB When reading the WAL, by passing references into the buffer we can avoid copying strings under `-tags stringlabels`. Signed-off-by: Bryan Boreham <bjboreham@gmail.com>	1 year ago
Ziqi Zhao	e250f09b5d	change origin schema in `ReduceResolution` method of histogram and float histogram (#13116 ) * change origin schema in ReduceResolution method of histogram and float histogram Signed-off-by: Ziqi Zhao <zhaoziqi9146@gmail.com> --------- Signed-off-by: Ziqi Zhao <zhaoziqi9146@gmail.com>	1 year ago
Ziqi Zhao	ab2a7bb74f	add generic shrink function (#13001 ) Add `ReduceResolution` method to `Histogram` and `FloatHistogram` This takes the original `mergeToSchema` function and turns it into a more generic `reduceResolution` function, which is the building block for the new methods. The methods will help with addressing #12864. --------- Signed-off-by: Ziqi Zhao <zhaoziqi9146@gmail.com>	1 year ago
Matthieu MOREL	05fba53e57	web : use Go standard package Signed-off-by: Matthieu MOREL <matthieu.morel35@gmail.com>	1 year ago
Julien Pivotto	cf01ec2119	Merge pull request #13091 from mmorel-35/errorlint/util util: use Go standard errors package	1 year ago
Linas Medziunas	ebed7d0612	Change Validate to be a method on histogram structs Signed-off-by: Linas Medziunas <linas.medziunas@gmail.com>	1 year ago
Linas Medziunas	1f8aea11d6	Move histogram validation code to model/histogram Signed-off-by: Linas Medziunas <linas.medziunas@gmail.com>	1 year ago
Matthieu MOREL	fe057fc60d	use Go standard errors package Signed-off-by: Matthieu MOREL <matthieu.morel35@gmail.com>	1 year ago
Björn Rabenstein	fae4561369	Merge pull request #12954 from linasm/linasm/optimize-floatBucketIterator2 Histogram performance: optimize floatBucketIterator	1 year ago
Oleksandr Redko	fa90ca46e5	ci(lint): enable godot; append dot at the end of comments Signed-off-by: Oleksandr Redko <Oleksandr_Redko@epam.com>	1 year ago
Linas Medžiūnas	e3e22abadb	Merge branch 'main' into linasm/optimize-floatBucketIterator2 Signed-off-by: Linas Medžiūnas <linasm@users.noreply.github.com>	1 year ago
beorn7	b428416f06	textparse: Update comment about timestamp_ms protobuf parsing By now, we know better what the plan is. Signed-off-by: beorn7 <beorn@grafana.com>	1 year ago
Arthur Silva Sens	ef8e6ae780	Parse created timestamps from Prometheus Protobuf (#12973 ) Signed-off-by: Arthur Silva Sens <arthur.sens@coralogix.com>	1 year ago
Marc Tuduri	1ce066e51c	More periods Signed-off-by: Marc Tuduri <marctc@protonmail.com>	1 year ago
Marc Tuduri	af7c31ee10	PR feedback Signed-off-by: Marc Tuduri <marctc@protonmail.com>	1 year ago
Marc Tuduri	8fededf6ad	promql(histograms): Change sample total calculation for histograms Signed-off-by: Marc Tuduri <marctc@protonmail.com>	1 year ago
Björn Rabenstein	f33bffa788	Merge pull request #12891 from linasm/fix-gaps-in-histogram-equals Fix NaN checks in [Float]Histogram.Equals method	1 year ago
Linas Medziunas	62bbb81e29	Mention bucket values in the comment Signed-off-by: Linas Medziunas <linas.medziunas@gmail.com>	1 year ago
Linas Medziunas	ec823d9daf	Update comments, bitwise comparison of float buckets Signed-off-by: Linas Medziunas <linas.medziunas@gmail.com>	1 year ago
Linas Medziunas	c5c5c569fa	Histogram performance: optimize floatBucketIterator Signed-off-by: Linas Medziunas <linas.medziunas@gmail.com>	1 year ago
Matthieu MOREL	0a513f827d	ci(lint): enable errorlint linter on model Signed-off-by: Matthieu MOREL <matthieu.morel35@gmail.com>	1 year ago
Julien Pivotto	c52db2b196	Remove duplicate tests Signed-off-by: Julien Pivotto <roidelapluie@o11y.eu>	1 year ago
johncming	5d68ebb207	pkg/rulefmt: fix bug of validate. Signed-off-by: johncming <johncming@yahoo.com>	1 year ago
Linas Medziunas	3c047a3518	Expand docs comments Signed-off-by: Linas Medziunas <linas.medziunas@gmail.com>	1 year ago
Linas Medziunas	dfb6292600	Compare FloatHistogram.[Zero]Count float values as binary Signed-off-by: Linas Medziunas <linas.medziunas@gmail.com>	1 year ago
Linas Medziunas	cbd01fc296	Fix NaN sum check in [Float]Histogram.Equals method Signed-off-by: Linas Medziunas <linas.medziunas@gmail.com>	1 year ago
Goutham Veeramachaneni	86729d4d7b	Update exp package (#12650 )	1 year ago
Gregor Zeitlinger	f01718262a	Unit tests for native histograms (#12668 ) promql: Extend testing framework to support native histograms This includes both the internal testing framework as well as the rules unit test feature of promtool. This also adds a bunch of basic tests. Many of the code level tests can now be converted to tests within the framework, and more tests can be added easily. --------- Signed-off-by: Harold Dost <h.dost@criteo.com> Signed-off-by: Gregor Zeitlinger <gregor.zeitlinger@grafana.com> Signed-off-by: Stephen Lang <stephen.lang@grafana.com> Co-authored-by: Harold Dost <h.dost@criteo.com> Co-authored-by: Stephen Lang <stephen.lang@grafana.com> Co-authored-by: Gregor Zeitlinger <gregor.zeitlinger@grafana.com>	1 year ago
zenador	54aaa2bd7e	Add `histogram_stdvar` and `histogram_stddev` functions (#12614 ) * Add new function: histogram_stdvar and histogram_stddev Signed-off-by: Jeanette Tan <jeanette.tan@grafana.com>	1 year ago
Björn Rabenstein	798c5737a0	Merge pull request #12711 from fatsheep9146/floathistogram-addsub-enhance enhance float histogram add and sub method	1 year ago
Ziqi Zhao	de172049ab	fix lint error Signed-off-by: Ziqi Zhao <zhaoziqi9146@gmail.com>	1 year ago
Ziqi Zhao	d3633d4e76	Update model/histogram/float_histogram.go Co-authored-by: Björn Rabenstein <github@rabenste.in> Signed-off-by: Ziqi Zhao <zhaoziqi9146@gmail.com>	1 year ago
Ziqi Zhao	893f97556f	use switch instead of if-else to fix lint error Signed-off-by: Ziqi Zhao <zhaoziqi9146@gmail.com>	1 year ago
Ziqi Zhao	788061e509	remove unused addBucket function Signed-off-by: Ziqi Zhao <zhaoziqi9146@gmail.com>	1 year ago
Ziqi Zhao	eab3c93e80	make code ready for review Signed-off-by: Ziqi Zhao <zhaoziqi9146@gmail.com>	1 year ago
beorn7	65ccf4460a	textparse: Fix endless loop #12731 PR #12557 introduced the possibility of parsing multiple exemplars per native histograms. It did so by requiring the `Exemplar` method of the parser to be called repeatedly until it returns false. However, the protobuf parser code wasn't correctly updated for the old case of a single exemplar for a classic bucket (if actually parsed as a classic bucket) and a single exemplar on a counter. In those cases, the method would return `true` forever, yielding the same exemplar again and again, leading to an endless loop. With this fix, the state is now tracked and the single exemplar is only returned once. Signed-off-by: beorn7 <beorn@grafana.com>	1 year ago
beorn7	3d9a830f2f	textparse: Expose #12731 in protobufparse_test.go Signed-off-by: beorn7 <beorn@grafana.com>	1 year ago
György Krajcsovits	e846736134	Fix typo Signed-off-by: György Krajcsovits <gyorgy.krajcsovits@grafana.com>	1 year ago
Ziqi Zhao	4787c879bc	add more elaborate benchmark test Signed-off-by: Ziqi Zhao <zhaoziqi9146@gmail.com>	1 year ago
Ziqi Zhao	bf880a6e77	enhance floathistogram add and sub method Signed-off-by: Ziqi Zhao <zhaoziqi9146@gmail.com>	1 year ago
Bryan Boreham	d6e1b1acdb	Merge pull request #12681 from prometheus/labels-unused-code labels: remove some unused code	1 year ago
Bryan Boreham	5007fa305d	Merge pull request #12680 from bboreham/faster-has labels: improve Has() method for stringlabels build	1 year ago
Bryan Boreham	ce260b1fe1	labels: remove some unused code Signed-off-by: Bryan Boreham <bjboreham@gmail.com>	1 year ago
Bryan Boreham	b5c6807fea	Labels.Has quick check on first character Exit early if we've gone past - labels are sorted in order. Signed-off-by: Bryan Boreham <bjboreham@gmail.com>	1 year ago
Bryan Boreham	33aab1b2cc	labels: extend benchmark for Has() Signed-off-by: Bryan Boreham <bjboreham@gmail.com>	1 year ago
Ziqi Zhao	ed1b307bca	enhance FloatHistogram CopyToSchema method (#12596 ) histogram: Improve performance of FloatHistogram.CopyToSchema Signed-off-by: Ziqi Zhao <zhaoziqi9146@gmail.com> --------- Signed-off-by: Ziqi Zhao <zhaoziqi9146@gmail.com> Co-authored-by: Björn Rabenstein <github@rabenste.in>	1 year ago
beorn7	c58e20ad0e	histogram: Identify native histograms even without observations Native histograms without observations and with a zero threshold of zero look the same as classic histograms in the protobuf exposition format. According to https://github.com/prometheus/client_golang/issues/1127 , the idea is to add a no-op span to those histograms to mark them as native histograms. This commit enables Prometheus to detect that no-op span and adds a doc comment to the proto spec describing the behavior. Signed-off-by: beorn7 <beorn@grafana.com>	1 year ago
Björn Rabenstein	0e12f11d61	Merge pull request #12583 from prometheus/release-2.46 Merge release-2.46 into main	1 year ago
Julien Pivotto	7905594b52	Merge pull request #12557 from prometheus/beorn7/histogram scrape: Enable ingestion of multiple exemplars per sample	1 year ago
Björn Rabenstein	b2567aeacd	Merge pull request #12575 from prometheus/beorn7/histogram2 histogram: Fix bounds of buckets returned by floatBucketIterator	1 year ago
beorn7	9aadd54786	histogram: Fix bounds of buckets returned by floatBucketIterator The bounds weren't really used so far, so no actual bug in the code so far. But it's obviously confusing if the bounds returned by a floatBucketIterator with a target schema different from the original schema are wrong. Signed-off-by: beorn7 <beorn@grafana.com>	1 year ago
beorn7	071f4bbea4	histograms: Fix parsing float histograms without zero bucket If a float histogram has a zero bucket with a threshold of zero _and_ an empty zero bucket, it wasn't identified as a native histogram because the `isNativeHistogram` helper function only looked at integer buckets. Signed-off-by: beorn7 <beorn@grafana.com>	1 year ago
beorn7	2ea8df4734	histogram: Expose #12305 Native histograms without a zero threshold aren't federated properly. This adds a test to prove the specific failure mode, which is that histograms with a zero threshold of zero are federated as classic histograms. The underlying reason is that the protobuf parser identifies a native histogram by detecting a zero bucket or by detecting integer buckets. Therefore, a float histogram with a zero threshold of zero and an unpopulated zero bucket falls through the cracks (no integer buckets, no zero bucket). This commit also addse a test case for the latter. Signed-off-by: beorn7 <beorn@grafana.com>	1 year ago
Julien Pivotto	b7028c1722	Merge pull request #11426 from douglascamata/document-and-test-relabel-memory-reuse Better document possible relabel input modification	1 year ago
cui fliter	096ceca44f	remove repetitive words (#12556 ) Signed-off-by: cui fliter <imcusg@gmail.com>	1 year ago
beorn7	0e3f35324b	scrape: Enable ingestion of multiple exemplars per sample This has become a requirement for native histograms, as a single histogram sample commonly has many buckets, so that providing many exemplars makes sense. Since OM text doesn't support native histograms yet, the test had to be expanded to also support protobuf test cases. Signed-off-by: beorn7 <beorn@grafana.com>	1 year ago
beorn7	da047c6857	histograms: Fix bug #12552 The problem was the following: When trying to parse native histograms and classic histograms in parallel, the parser would first parse the histogram proto messages as a native histogram and then parse the same message again, but now as a classic histogram. Afterwards, it would forget that it was dealing with a metric family that contains native histograms and would parse the rest of the metric family as classic histograms only. The fix is to check again after being done with a classic histogram. Signed-off-by: beorn7 <beorn@grafana.com>	1 year ago
beorn7	1c3bd04bea	histograms: Modify test to expose bug #12552 Signed-off-by: beorn7 <beorn@grafana.com>	1 year ago
Douglas Camata	47819fef01	Merge branch 'main' of github.com:prometheus/prometheus into document-and-test-relabel-memory-reuse Signed-off-by: Douglas Camata <159076+douglascamata@users.noreply.github.com>	1 year ago
Ziqi Zhao	42d9169ba1	enhance histogram_quantile to get min/max value Signed-off-by: Ziqi Zhao <zhaoziqi9146@gmail.com>	1 year ago
Carrie Edwards	a462f7fa21	Add function for iterating through all buckets in reverse to find max bucket Signed-off-by: Carrie Edwards <edwrdscarrie@gmail.com>	1 year ago
Bryan Boreham	e1115ae58d	labels: improve Get method for stringlabels build (#12485 ) Inline one call to `decodeString`, and skip decoding the value string until we find a match for the name. Do a quick check on the first character in each string, and exit early if we've gone past - labels are sorted in order. Also improve tests and benchmark: * labels: test Get with varying lengths - it's not typical for Prometheus labels to all be the same length. * extend benchmark with label not found --------- Signed-off-by: Bryan Boreham <bjboreham@gmail.com>	1 year ago
Bryan Boreham	87d08abe11	labels: faster Compare function when using -tags stringlabels (#12451 ) Instead of unpacking every individual string, we skip to the point where there is a difference, going 8 bytes at a time where possible. Add benchmark for Compare; extend tests too. --------- Signed-off-by: Bryan Boreham <bjboreham@gmail.com> Co-authored-by: Oleg Zaytsev <mail@olegzaytsev.com>	1 year ago
Oleg Zaytsev	6a18962cfa	mv labels_string.go labels_stringlabels.go (#12328 ) This is a minor cosmetical change, but my IDE (and I guess many of them) nests `labels_string.go` under `labels.go` because it assumes it's the file generated by the `stringer` tool, which follows that naming pattern. Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com>	1 year ago
Michael Hoffmann	344c8ff97c	feat: dont compile regex matcher if we know its a literal (#12434 ) labels: dont compile regex matcher if we know its a literal Signed-off-by: Michael Hoffmann <mhoffm@posteo.de> Co-authored-by: Sharad <sharadgaur@gmail.com>	2 years ago
zenador	191bf9055b	Handle more arithmetic operators for native histograms (#12262 ) Handle more arithmetic operators and aggregators for native histograms This includes operators for multiplication (formerly known as scaling), division, and subtraction. Plus aggregations for average and the avg_over_time function. Stdvar and stddev will (for now) ignore histograms properly (rather than counting them but adding a 0 for them). Signed-off-by: Jeanette Tan <jeanette.tan@grafana.com>	2 years ago
Bryan Boreham	a073e04a9b	Merge pull request #12366 from prometheus/release-2.44 Merge release 2.44 back to main	2 years ago
beorn7	9e500345f3	textparse/scrape: Add option to scrape both classic and native histograms So far, if a target exposes a histogram with both classic and native buckets, a native-histogram enabled Prometheus would ignore the classic buckets. With the new scrape config option `scrape_classic_histograms` set, both buckets will be ingested, creating all the series of a classic histogram in parallel to the native histogram series. For example, a histogram `foo` would create a native histogram series `foo` and classic series called `foo_sum`, `foo_count`, and `foo_bucket`. This feature can be used in a migration strategy from classic to native histograms, where it is desired to have a transition period during which both native and classic histograms are present. Note that two bugs in classic histogram parsing were found and fixed as a byproduct of testing the new feature: 1. Series created from classic _gauge_ histograms didn't get the _sum/_count/_bucket prefix set. 2. Values of classic _float_ histograms weren't parsed properly. Signed-off-by: beorn7 <beorn@grafana.com>	2 years ago
Bryan Boreham	7a48a266b6	labels: respect Set after Del in Builder (#12322 ) * labels: respect Set after Del in Builder The implementations are not symmetric between `Set()` and `Del()`, so we must be careful. Add tests for this, both in labels and in relabel where the issue was reported. Also make the slice implementation consistent re `slices.Contains`. Signed-off-by: Bryan Boreham <bjboreham@gmail.com>	2 years ago
cui fliter	276ca6a883	fix some comments Signed-off-by: cui fliter <imcusg@gmail.com>	2 years ago
Matthieu MOREL	bae9a21200	Merge branch 'main' into linter/nilerr Signed-off-by: Matthieu MOREL <matthieu.morel35@gmail.com>	2 years ago
beorn7	5b53aa1108	style: Replace `else if` cascades with `switch` Wiser coders than myself have come to the conclusion that a `switch` statement is almost always superior to a statement that includes any `else if`. The exceptions that I have found in our codebase are just these two: * The `if else` is followed by an additional statement before the next condition (separated by a `;`). * The whole thing is within a `for` loop and `break` statements are used. In this case, using `switch` would require tagging the `for` loop, which probably tips the balance. Why are `switch` statements more readable? For one, fewer curly braces. But more importantly, the conditions all have the same alignment, so the whole thing follows the natural flow of going down a list of conditions. With `else if`, in contrast, all conditions but the first are "hidden" behind `} else if `, harder to spot and (for no good reason) presented differently from the first condition. I'm sure the aforemention wise coders can list even more reasons. In any case, I like it so much that I have found myself recommending it in code reviews. I would like to make it a habit in our code base, without making it a hard requirement that we would test on the CI. But for that, there has to be a role model, so this commit eliminates all `if else` occurrences, unless it is autogenerated code or fits one of the exceptions above. Signed-off-by: beorn7 <beorn@grafana.com>	2 years ago
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	1801cd4196	labels: small optimization to stringlabels Add a fast path for the common case that a string is less than 127 bytes long, to skip a shift and the loop. Signed-off-by: Bryan Boreham <bjboreham@gmail.com>	2 years ago
Matthieu MOREL	fb3eb21230	enable gocritic, unconvert and unused linters Signed-off-by: Matthieu MOREL <matthieu.morel35@gmail.com>	2 years ago
Bryan Boreham	10cc60af01	labels: add ScratchBuilder.Overwrite for slice implementation This is a method used by some downstream projects; it was created to optimize the implementation in `labels_string.go` but we should have one for both implementations so the same code works with either. Signed-off-by: Bryan Boreham <bjboreham@gmail.com>	2 years ago
Ganesh Vernekar	5588cab8b2	Merge pull request #12173 from bboreham/builder-no-empty-labels labels: simplify call to get Labels from Builder	2 years ago
Bryan Boreham	e917202766	labels: make sure estimated size is not negative Deleted labels are remembered, even if they were not in `base` or were removed from `add`, so `base+add-del` could go negative. Signed-off-by: Bryan Boreham <bjboreham@gmail.com>	2 years ago
Bryan Boreham	ee1157c14a	labels: shrink stack arrays in Builder.Range Go spends some time initializing all the elements of these arrays to zero, so reduce the size from 1024 to 128. This is still much bigger than we ever expect for a set of labels. (If someone does have more than 128 labels it will still work, but via heap allocation.) Signed-off-by: Bryan Boreham <bjboreham@gmail.com>	2 years ago
Bryan Boreham	b987afa7ef	labels: simplify call to get Labels from Builder It took a `Labels` where the memory could be re-used, but in practice this hardly ever benefitted. Especially after converting `relabel.Process` to `relabel.ProcessBuilder`. Comparing the parameter to `nil` was a bug; `EmptyLabels` is not `nil` so the slice was reallocated multiple times by `append`. Lastly `Builder.Labels()` now estimates that the final size will depend on labels added and deleted. Signed-off-by: Bryan Boreham <bjboreham@gmail.com>	2 years ago
Bryan Boreham	3743d87c56	labels: cope with mutating Builder during Range call Although we had a different slice, the underlying memory was the same so any changes meant we could skip some values. Signed-off-by: Bryan Boreham <bjboreham@gmail.com>	2 years ago
Bryan Boreham	3c4ab7a069	labels: add test for Builder.Range Including mutating the Builder being Ranged over. Signed-off-by: Bryan Boreham <bjboreham@gmail.com>	2 years ago
Björn Rabenstein	847093479b	Merge pull request #11978 from trevorwhitney/set-counter-hint Set `CounterResetHint` and use in recording rules	2 years ago

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335 Commits (3bb27c33e938e92cd505d852365e5e55ec805ee7)