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20 Commits

Author SHA1 Message Date
Matthieu MOREL cef219c31c chore: enable unused-receiver rule from revive 
Signed-off-by: Matthieu MOREL <matthieu.morel35@gmail.com>
 2025-08-04 09:43:33 +00:00
hardlydearly ba4b058b7a refactor: use slices.Contains to simplify code
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Signed-off-by: hardlydearly <799511800@qq.com>
 2025-05-09 08:27:10 +02:00
Matthieu MOREL c7d4b53ec1 chore: enable unused-parameter from revive 
Signed-off-by: Matthieu MOREL <matthieu.morel35@gmail.com>
 2025-02-19 19:50:28 +01:00
Bryan Boreham 5571c7dc98 FastRegexMatcher: use stack memory for lowercase copy of string 
Up to 32-byte values this saves garbage, runs faster.
For prefixes, only `toLower` the part we need for the map lookup.

Split toNormalisedLower into fast and slow paths, to avoid a penalty
for the `copy` call in the case where no allocations are done.

Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
 2024-10-28 16:28:58 +00:00
Mario Fernandez 5814920601
Fix: optimize .* regexp performance 
Shortcut for `.*` matches newlines as well.
Add preamble change ^(?s:
Add test
dotAll flag por al regex
Add and fix regex tests

Signed-off-by: Mario Fernandez <mariofer@redhat.com>
 2024-09-17 12:18:31 +02:00
Bryan Boreham 82a8c6abe2
[ENHANCEMENT] Optimize regexps with multiple prefixes (#13843) 
For example `foo.*|bar.*|baz.*`. Instead of checking each one in turn,
we build a map of prefixes, then check the smaller set that could match
the string supplied.

Signed-off-by: Bryan Boreham <bjboreham@gmail.com>

* Improve testing and readability

Address review comments on #13843

Signed-off-by: Marco Pracucci <marco@pracucci.com>
 2024-07-03 18:45:36 +01:00
Marco Pracucci ec31acaf02
FastRegexMatcher: small optimization for the literal prefix case 
Signed-off-by: Marco Pracucci <marco@pracucci.com>
 2024-07-01 10:12:50 +02:00
Oleg Zaytsev 4f78cc809c
Refactor `toNormalisedLower`: shorter and slightly faster. (#14299) 
Refactor toNormalisedLower: shorter and slightly faster

Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com>
 2024-06-18 09:57:37 +00:00
Ranveer Avhad 39902ba694
[BUGFIX] FastRegexpMatcher: do Unicode normalization as part of case-insensitive comparison (#14170) 
* Converted string to standarized form
* Added golang.org/x/text in Go dependencies
* Added test cases for FastRegexMatcher
* Added benchmark for toNormalizedLower

Signed-off-by: RA <ranveeravhad777@gmail.com>
 2024-06-10 18:31:41 -04:00
Marco Pracucci d966ae6400
Optimize containsInOrder() inlining it 
Signed-off-by: Marco Pracucci <marco@pracucci.com>
 2024-06-04 10:34:15 +02:00
Marco Pracucci a0807733be
Improved tests 
Signed-off-by: Marco Pracucci <marco@pracucci.com>
 2024-06-04 10:34:15 +02:00
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
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 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 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
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
Marco Pracucci bfec57bd2e
Further optimise FastRegexMatcher 
Signed-off-by: Marco Pracucci <marco@pracucci.com>
 2024-01-25 10:40:57 +01:00
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>
 2023-06-07 21:54:30 +01:00
Bryan Boreham 579331446a
Allow downstream projects to use faster regexp (#10251) 
* Add benchmark for FastRegexMatcher

Signed-off-by: Bryan Boreham <bjboreham@gmail.com>

* Use modified regexp package with optimisations

See https://github.com/grafana/regexp/tree/speedup#readme

Includes the following changes proposed upstream:
* [regexp: allow patterns with no alternates to be one-pass](https://go-review.googlesource.com/c/go/+/353711)
* [regexp: speed up onepass prefix check](https://go-review.googlesource.com/c/go/+/354909)
* [regexp: handle prefix string with fold-case](https://go-review.googlesource.com/c/go/+/358756)
* [regexp: avoid copying each instruction executed](https://go-review.googlesource.com/c/go/+/355789)
* [regexp: allow prefix string anchored at beginning](https://go-review.googlesource.com/c/go/+/377294)

Signed-off-by: Bryan Boreham <bjboreham@gmail.com>

* Use regexp code identical to upstream Go

Change `grafana/regexp` import to use `main` branch.

This means Prometheus is not using the proposed optimisations, but
downstream users of Prometheus code are able to `replace` the library
with the `speedup` branch which does.

Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
 2022-02-08 11:03:20 +01:00
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>
 2021-11-09 08:03:10 +01:00