Commit graph

360 commits

Author SHA1 Message Date
Marco Pracucci 78fdd2188d
Improve contains check done by FastRegexMatcher
Signed-off-by: Marco Pracucci <marco@pracucci.com>
2024-06-04 10:34:15 +02:00
gotjosh 37b408c6cd
Feature: Allow configuration of a rule evaluation delay (#14061)
* [PATCH] Allow having evaluation delay for rule groups

Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com>

* [PATCH] Fix lint

Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com>

* [PATCH] Move the option to ManagerOptions

Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com>

* [PATCH] Include evaluation_delay in the group config

Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com>

* Fix comments

Signed-off-by: gotjosh <josue.abreu@gmail.com>

* Add a server configuration option.

Signed-off-by: gotjosh <josue.abreu@gmail.com>

* Appease the linter #1

Signed-off-by: gotjosh <josue.abreu@gmail.com>

* Add the new server flag documentation

Signed-off-by: gotjosh <josue.abreu@gmail.com>

* Improve documentation of the new flag and configuration

Signed-off-by: gotjosh <josue.abreu@gmail.com>

* Use named parameters for clarity on the `Rule` interface

Signed-off-by: gotjosh <josue.abreu@gmail.com>

* Add `initial` to the flag help

Signed-off-by: gotjosh <josue.abreu@gmail.com>

* Change the CHANGELOG area from `ruler` to `rules`

Signed-off-by: gotjosh <josue.abreu@gmail.com>

* Rename evaluation_delay to `rule_query_offset`/`query_offset` and make it a global configuration option.

Signed-off-by: gotjosh <josue.abreu@gmail.com>

E Your branch is up to date with 'origin/gotjosh/evaluation-delay'.

* more docs

Signed-off-by: gotjosh <josue.abreu@gmail.com>

* Improve wording on CHANGELOG

Signed-off-by: gotjosh <josue.abreu@gmail.com>

* Add `RuleQueryOffset` to the default config in tests in case it changes

Signed-off-by: gotjosh <josue.abreu@gmail.com>

* Update docs/configuration/recording_rules.md

Co-authored-by: Julius Volz <julius.volz@gmail.com>
Signed-off-by: gotjosh <josue.abreu@gmail.com>

* Rename `RuleQueryOffset` to `QueryOffset` when in the group context.

Signed-off-by: gotjosh <josue.abreu@gmail.com>

* Improve docstring and documentation on the `rule_query_offset`

Signed-off-by: gotjosh <josue.abreu@gmail.com>

---------

Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com>
Signed-off-by: gotjosh <josue.abreu@gmail.com>
Co-authored-by: Ganesh Vernekar <ganeshvern@gmail.com>
Co-authored-by: Julius Volz <julius.volz@gmail.com>
2024-05-30 11:49:50 +01:00
Bryan Boreham 1e0b0e250a
Merge pull request #14090 from colega/improve-zeroOrOneCharacterStringMatcher-Matches
Improve `zeroOrOneCharacterStringMatcher` by using `utf8.DecodeRuneInString`
2024-05-16 09:28:53 +01:00
Oleksandr Redko f10c3454e9 Enable perfsprint linter and fix up code
Signed-off-by: Oleksandr Redko <oleksandr.red+github@gmail.com>
2024-05-15 17:51:05 +03:00
Björn Rabenstein e6be4240be
Merge pull request #14068 from colega/quote-label-name-in-matchers-when-needed
Bugfix: quote label name in matchers when needed
2024-05-14 17:18:58 +02:00
Bryan Boreham dc926527ae
Merge pull request #13669 from aiwhj/optimization
[ENHANCEMENT] Relabeling: small speed-up of hashmod

Code optimization: The relabel operation is used very frequently, and strconv.FormatInt() with better performance should be used.
2024-05-14 12:54:00 +01:00
Oleg Zaytsev 8b4c9459a2
Check utf8.RuneError result
Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com>
2024-05-13 17:44:26 +02:00
Oleg Zaytsev dbe88fae22
Add invalid utf8 test cases to regexp
Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com>
2024-05-13 17:05:31 +02:00
Oleg Zaytsev bcff5059e6
Use utf8.DecodeRuneInString(s)
This replaces the custom `moreThanOneRune` function with the standard
`utf8.DecodeRuneInString(s)` that can be used to figure out the size of
the first rune.

Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com>
2024-05-13 15:41:00 +02:00
Oleg Zaytsev fdfc6d4725
Benchmark zeroOrOneCharacterStringMatcher.Matches
This adds some more test cases for unicode values, and also a benchmark
for zeroOrOneCharacterStringMatcher.Matches()

Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com>
2024-05-13 15:36:55 +02:00
Oleg Zaytsev b7b4355807
Use bytes.Buffer from stack buf in Matcher.String()
Also removed the growing until there's a benchmark for that.

Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com>
2024-05-09 10:00:24 +02:00
Arve Knudsen d699dc3c77
Fix language in docs and comments (#14041)
Fix language in docs and comments

---------

Signed-off-by: Arve Knudsen <arve.knudsen@gmail.com>
Co-authored-by: Björn Rabenstein <github@rabenste.in>
2024-05-08 17:57:09 +02:00
Oleg Zaytsev 6ebda5a7bc
Optimize Matcher.String()
Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com>
2024-05-08 17:05:27 +02:00
Oleg Zaytsev dabd789fd5
Quote label name in matchers when needed
When the label name of a matcher contains non-standard characters, like
a dot, or starts with a digit, it should be quoted.

If it's not quoted, then `VectorSelector.String()` isn't a valid PromQL.

Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com>
2024-05-08 16:58:51 +02:00
Oleg Zaytsev 2524a91591
Fix FastRegexMatcher matching multibyte runes with . (#14059)
When `zeroOrOneCharacterStringMatcher` wach checking the input string,
it assumed that if there are more than one bytes, then there are more
than one runes, but that's not necessarily true.

Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com>
2024-05-07 16:33:37 +02:00
Björn Rabenstein 4ec5c25393
Merge pull request #13731 from suntala/suntala/native-histogram-template
histograms: support expansion of native histogram values in templating
2024-04-11 13:24:26 +02:00
Matthieu MOREL d496687c8e golangci-lint: enable usestdlibvars linter
Signed-off-by: Matthieu MOREL <matthieu.morel35@gmail.com>
2024-04-08 19:26:23 +00:00
Bryan Boreham 7c28521451 [TESTS] Truncate some long test names, for readability
The strings produced by these tests can run to thousands of characters,
which makes test logs difficult to read.

Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
2024-04-03 10:10:39 +01:00
carehabit a672662073
all: fix some typos (#13863)
Signed-off-by: carehabit <shenyuting@outlook.com>
2024-04-01 18:06:05 +02:00
Domantas 435f330d0b
[BUGFIX] labels: don't modify original labels in DropMetricName (#13845)
Restrict the capacity of first argument to `append()` to force an allocation.
This is for the slice implementation only.

Signed-off-by: Domantas Jadenkus <djadenkus@gmail.com>
2024-03-27 10:35:17 +00:00
suntala 44f385fd51 Support expansion of native histogram values in alert templates
Co-authored-by: Aleks Fazlieva <britishrum@users.noreply.github.com>
Signed-off-by: suntala <arati.rana@grafana.com>
2024-03-26 22:30:01 +01:00
Bryan Boreham 48786ad4e8 Use slices insteda of exp/slices
Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
2024-03-25 12:20:18 +00:00
Bryan Boreham 080d440bf8 Merge remote-tracking branch 'origin/main' into pr/13461 2024-03-25 12:14:26 +00:00
Oleg Zaytsev d12e785075
Improve readability
As suggested by @bboreham

Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com>
2024-03-18 11:16:09 +01:00
Oleg Zaytsev 9699598952
Improve Labels.Compare performance w/stringlabels
I was bored on a train and I spent some amount of time trying to scratch
some nanoseconds off the Labels.Compare when running with stringlabels.

I would be ashamed to admit the real amount of time I spent on it.

The worst thing is, I can't really explain why this is performing so
much better, and someone should re-run the benchmarks on their machine
to confirm that it's not something related to general relativity because
the train is moving. I also added some extra real-life benchmark cases
with longer labelsets (these aren't the longest we have in production,
but kubernetes labelsets are fairly common in Prometheus so I thought it
would be nice to have them).

My benchmarks show this diff:

goos: darwin
goarch: arm64
pkg: github.com/prometheus/prometheus/model/labels
                                       │     old     │                 new                 │
                                       │   sec/op    │   sec/op     vs base                │
Labels_Compare/equal                     5.898n ± 0%   5.875n ± 1%   -0.40% (p=0.037 n=10)
Labels_Compare/not_equal                 11.78n ± 2%   11.01n ± 1%   -6.54% (p=0.000 n=10)
Labels_Compare/different_sizes           4.959n ± 1%   4.906n ± 2%   -1.05% (p=0.050 n=10)
Labels_Compare/lots                      21.32n ± 0%   17.54n ± 5%  -17.75% (p=0.000 n=10)
Labels_Compare/real_long_equal           15.06n ± 1%   14.92n ± 0%   -0.93% (p=0.000 n=10)
Labels_Compare/real_long_different_end   25.20n ± 0%   24.43n ± 0%   -3.04% (p=0.000 n=10)
geomean                                  11.86n        11.25n        -5.16%

Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com>
2024-03-17 17:08:06 +01:00
Bryan Boreham 0bb5588386
labels: optimize String method (#13673)
Use a stack buffer to reduce memory allocations.

`Write(AppendQuote(AvailableBuffer` does not allocate or copy when
the buffer has sufficient space.

Also add a benchmark, with some refactoring.

Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
2024-03-12 11:34:03 +00:00
Arthur Silva Sens 07355c9199
Bump client_golang to 1.19
Signed-off-by: Arthur Silva Sens <arthur.sens@coralogix.com>
2024-03-06 09:11:13 -03:00
Ondrej Kokes 2e30f1231b docs: textparse.Parser return type mismatch
The docs suggest the Next method returns a bool, but that's not the case (`Entry` is an int).

```
	// Next advances the parser to the next sample. It returns false if no
	// more samples were read or an error occurred.
	Next() (Entry, error)
```

The docs were first added in d80a3de235 in 2017. Back then the signature was
indeed `func (p *Parser) Next() bool`. But then it got refactored in 76a4a46cb0
and the signature changed with it, yet docs stayed the same - and eventually made their way into the `Parser` interface.

However, the Protobuf parser does have the right wording: 5de2df752f

```
// Next advances the parser to the next "sample" (emulating the behavior of a
// text format parser). It returns (EntryInvalid, io.EOF) if no samples were
// read.
```

Changing all other implementations (and the interface itself) to match this doc.

Signed-off-by: Ondrej Kokes <ondrej.kokes@gmail.com>
2024-02-29 16:45:05 +01:00
roger.wang 7e8f03663a Code optimization: The relabel operation is used very frequently, and strconv.FormatInt() with better performance should be used.
Signed-off-by: roger.wang <roger.wang@cloudwise.com>
2024-02-29 09:33:17 +08:00
machine424 f477e0539a
Move from golang.org/x/exp/slices into slices now that we only support Go >= 1.21
Prevent adding back golang.org/x/exp/slices.

Signed-off-by: machine424 <ayoubmrini424@gmail.com>
2024-02-28 14:54:53 +01:00
Bryan Boreham ba6aa95222 refactor: metrics parsing: extract common checking code
Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
2024-02-26 16:37:41 +00:00
Bryan Boreham d2817e9c91
Merge pull request #12304 from bboreham/labels-symboltable
Labels: reduce memory by de-duplicating strings in SymbolTables
2024-02-26 14:06:27 +00:00
Bryan Boreham e1a741a0d7 labels: update copyright dates
Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
2024-02-26 11:45:25 +00:00
Bryan Boreham 55e7de04f8 model/labels (stringlabels): use strings.Clone
Suggestion from @colega.

Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
2024-02-26 11:45:25 +00:00
Bryan Boreham d16ce3c9bd model/labels (dedupelabels): small clarifications
Suggestion from @colega.

Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
2024-02-26 11:45:25 +00:00
Bryan Boreham eff3a13e19 model/textparse: parsers take a labels SymbolTable
This allows strings to be interned to save memory.

Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
2024-02-26 11:45:25 +00:00
Bryan Boreham 93b72ec5dd tsdb: create SymbolTables for labels as required
Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
2024-02-26 11:45:25 +00:00
ismail simsek 2507469291
Fix: metadata API using wrong field names (#13633)
Fix is to add json tags to `Metadata` struct. Absence of these tags
causes Go to use the field name, which starts with an upper-case
letter and breaks the protocol.

Extend tests to verify the JSON response.

Signed-off-by: ismail simsek <ismailsimsek09@gmail.com>
2024-02-26 09:53:39 +00:00
Bryan Boreham b39286fd1f Add dedupelabels tag to not build regular labels
Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
2024-02-23 13:50:27 +00:00
Bryan Boreham d51a5344cd labels: new version de-duplicating strings in SymbolTables
The individual strings for label names and values are held in a table,
and each Labels value is a run of varint-encoded indexes into that table.

When creating new labels, a sync.Mutex is locked around reads and writes.
When reading labels, there is no locking because the table of strings
used by those labels is immutable.

Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
2024-02-23 13:50:27 +00:00
Bryan Boreham 28191109a8 Labels: add fake versions of SymbolTable apis
So we can use them where necessary for internlabels implementation.

Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
2024-02-23 13:50:27 +00:00
Bryan Boreham d1af84f6ee Labels: move Builder and Reset out of common
New internstrings implementation is different.

Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
2024-02-23 13:50:27 +00:00
Bryan Boreham 5aa4473894 labels tests: extend TestBuilder
Start with empty base labels, also check new and re-used symbol tables

Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
2024-02-23 13:50:27 +00:00
Bryan Boreham bb82a57e64 Labels: Call NewScratchBuilder in test_utils
Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
2024-02-23 13:50:27 +00:00
Bryan Boreham cc5dc6a61b labels: use Equal instead of DeepEqual
This will work better with a different data structure.

Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
2024-02-23 13:50:27 +00:00
Łukasz Mierzwa 5597020a60 Use github.com/klauspost/compress for gzip and zlib
klauspost/compress is a high quality drop-in replacement for common Go
compression libraries. Since Prometheus sends out a lot of HTTP requests
that often return compressed output having improved compression
libraries helps to save cpu & memory resources.
On a test Prometheus server I was able to see cpu reduction from 31 to
30 cores.

Benchmark results:

name                                old time/op    new time/op    delta
TargetScraperGzip/metrics=1-8         69.4µs ± 4%    69.2µs ± 3%     ~     (p=0.122 n=50+50)
TargetScraperGzip/metrics=100-8       84.3µs ± 2%    80.9µs ± 2%   -4.02%  (p=0.000 n=48+46)
TargetScraperGzip/metrics=1000-8       296µs ± 1%     274µs ±14%   -7.35%  (p=0.000 n=47+45)
TargetScraperGzip/metrics=10000-8     2.06ms ± 1%    1.66ms ± 2%  -19.34%  (p=0.000 n=47+45)
TargetScraperGzip/metrics=100000-8    20.9ms ± 2%    17.5ms ± 3%  -16.50%  (p=0.000 n=49+50)

name                                old alloc/op   new alloc/op   delta
TargetScraperGzip/metrics=1-8         6.06kB ± 0%    6.07kB ± 0%   +0.24%  (p=0.000 n=48+48)
TargetScraperGzip/metrics=100-8       7.04kB ± 0%    6.89kB ± 0%   -2.17%  (p=0.000 n=49+50)
TargetScraperGzip/metrics=1000-8      9.02kB ± 0%    8.35kB ± 1%   -7.49%  (p=0.000 n=50+50)
TargetScraperGzip/metrics=10000-8     18.1kB ± 1%    16.1kB ± 2%  -10.87%  (p=0.000 n=47+47)
TargetScraperGzip/metrics=100000-8    1.21MB ± 0%    1.01MB ± 2%  -16.69%  (p=0.000 n=36+50)

name                                old allocs/op  new allocs/op  delta
TargetScraperGzip/metrics=1-8           71.0 ± 0%      72.0 ± 0%   +1.41%  (p=0.000 n=50+50)
TargetScraperGzip/metrics=100-8         81.0 ± 0%      76.0 ± 0%   -6.17%  (p=0.000 n=50+50)
TargetScraperGzip/metrics=1000-8        92.0 ± 0%      83.0 ± 0%   -9.78%  (p=0.000 n=50+50)
TargetScraperGzip/metrics=10000-8       93.0 ± 0%      91.0 ± 0%   -2.15%  (p=0.000 n=50+50)
TargetScraperGzip/metrics=100000-8       111 ± 0%       135 ± 1%  +21.89%  (p=0.000 n=40+50)

Signed-off-by: Łukasz Mierzwa <l.mierzwa@gmail.com>
2024-02-22 17:08:15 +00:00
Björn Rabenstein ac10cd4d99
Merge pull request #13271 from ywwg/owilliams/utf8
UTF-8: Add partial support for parsing UTF-8 metric and label names
2024-02-16 11:42:55 +01:00
Owen Williams a28d7865ad UTF-8: Add support for parsing UTF8 metric and label names
This adds support for the new grammar of `{"metric_name", "l1"="val"}` to promql and some of the exposition formats.
This grammar will also be valid for non-UTF-8 names.
UTF-8 names will not be considered valid unless model.NameValidationScheme is changed.

This does not update the go expfmt parser in text_parse.go, which will be addressed by https://github.com/prometheus/common/issues/554/.

Part of https://github.com/prometheus/prometheus/issues/13095

Signed-off-by: Owen Williams <owen.williams@grafana.com>
2024-02-15 14:34:37 -05:00
Ziqi Zhao a93859a52f
Prometheus support parse exemplars from native histogram (#13488)
scrape: support parsing exemplars from native histogram

---------

Signed-off-by: Ziqi Zhao <zhaoziqi9146@gmail.com>
Signed-off-by: Björn Rabenstein <github@rabenste.in>
Co-authored-by: Björn Rabenstein <github@rabenste.in>
2024-02-14 17:24:40 +01:00
Bryan Boreham ff6c83269c
Merge pull request #13452 from bboreham/go-cmp
Tests: Use DeepEqual replacement using go-cmp, which is more flexible
2024-02-12 15:40:08 +01:00