Commit Graph

35 Commits

Author SHA1 Message Date
Aliaksandr Valialkin
e8a64f6e7a
lib/promrelabel: remove redundant memory allocations by using interned strings 2022-10-01 11:50:21 +03:00
Aliaksandr Valialkin
171dd14aa3
lib/promrelabel: go fmt 2022-09-30 12:28:55 +03:00
Aliaksandr Valialkin
a18d6d5ccc
lib/promrelabel: optimize action: replace for non-trivial regex values
Cache `action: replace` results for non-trivial regexs and return them next time
instead of performing CPU-intensive regex replacement.

Optimize also `action: labelmap_all` and `action: replace_all` in the same way.
2022-09-30 12:25:05 +03:00
Aliaksandr Valialkin
146021a076
lib/promrelabel: there is no need in calling regex.HasPrefix() after the optimization at 17289ff481 2022-09-30 10:49:18 +03:00
Aliaksandr Valialkin
899d2c40fb
lib/promrelabel: optimize action: labelmap for non-trivial regexs 2022-09-30 10:43:31 +03:00
Aliaksandr Valialkin
6a32a64073
lib/bytesutil: add FastStringTransformer and use it in the rest of the code where needed 2022-09-28 10:41:00 +03:00
Aliaksandr Valialkin
ef435f8cc4
lib/promrelabel: add SanitizeName() function for sanitizing Prometheus metric names and label names
Optimize this function by using results cache for input strings.
Use this function all over the code.

This is a follow-up for fcffdba9dc

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3113
2022-09-28 10:40:59 +03:00
Aliaksandr Valialkin
a2cd79576f
lib/promrelabel: call PromRegex.MatchString() on a slow path only if it contains non-empty literal prefix
This should improve slow path speed for regexps without literal prefixes
2022-08-26 21:48:30 +03:00
Aliaksandr Valialkin
f49c9bb700
lib/promrelabel: optimize common regex mismatch cases for action: replace and action: labelmap 2022-08-26 15:45:31 +03:00
Aliaksandr Valialkin
4c6916f32a
lib/promrelabel: use regexutil.PromRegex for regex matching in actions labeldrop,labelkeep,drop and keep
This makes possible optimizing additional cases inside regexutil.PromRegex
2022-08-26 15:23:45 +03:00
Aliaksandr Valialkin
0d4ea03a73
lib/promrelabel: optimize action: {labeldrop,labelkeep,keep,drop} with regex containing alternate values
For example, the following relabeling rule must work much faster now:

- action: labeldrop
  regex: "foo|bar|baz"
2022-08-24 17:54:29 +03:00
Aliaksandr Valialkin
8550c44e31
app/vmagent: add ability to construct a label from multiple existing labels by referring them in the replacement field during relabeling
For example:

- target_label: composite-label
  replacement: "{{source_label1}}-{{source_label2}}"
2022-08-21 22:50:01 +03:00
Aliaksandr Valialkin
814bb1685f
all: fix other typos in the same way as 6f4d9b2a48 does 2022-07-18 12:08:15 +03:00
Aliaksandr Valialkin
e6ed92529b
all: remove explicit "xxhash" name when importing github.com/cespare/xxhash/v2 package
This package already has the same name, so there is no need in explicit name
2022-06-21 20:23:32 +03:00
Aliaksandr Valialkin
c18f8cccfa
lib/promrelabel: support action: graphite relabeling
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/2737
2022-06-16 20:24:22 +03:00
Aliaksandr Valialkin
ca689fec54
docs/CHANGELOG.md: follow-up after 2177089f94 2022-06-01 14:51:26 +03:00
Roman Khavronenko
2177089f94
promrelabel: add support of lowercase and uppercase relabeling actions (#2665)
* promrelabel: add support of `lowercase` and `uppercase` relabeling actions

https://github.com/VictoriaMetrics/VictoriaMetrics/issues/2664
Signed-off-by: hagen1778 <roman@victoriametrics.com>

* lib/storage: make golangci-lint happy

Signed-off-by: hagen1778 <roman@victoriametrics.com>

Co-authored-by: Nikolay <nik@victoriametrics.com>
2022-06-01 10:02:37 +02:00
Aliaksandr Valialkin
3f49bdaeff
lib/promrelabel: add support for conditional relabeling via if filter
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1998
2022-02-24 02:27:26 +02:00
Aliaksandr Valialkin
661d2668f8 lib/promrelabel: add tests for labelsToString() function 2021-06-04 20:42:46 +03:00
Aliaksandr Valialkin
78f83dc5ad app/{vmagent,vminsert}: follow-up after 2fe045e2a4
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1343
2021-06-04 20:27:58 +03:00
jelmd
2fe045e2a4
new feature: debug relabeling (#1344)
* new feature: relabel logging

Use scrape_configs[x].relabel_debug = true to log metric names inkl.
labels before and after relabeling. After relabeling related metrics
get dropped, i.e. not submitted to servers.

* vminsert wants relabel logging, too.
2021-06-04 17:50:23 +03:00
Aliaksandr Valialkin
a939667ce0 lib/promrelabel: remove unneded optimizations for labeldrop and labelkeep actions
These optimizations may slow down code execution by matching the same label against regexp two times instead of a single time
2021-03-02 17:55:43 +02:00
Aliaksandr Valialkin
f7049e2af7 lib/promrelabel: optimize labeldrop and labelkeep relabeling for prefix.* and prefix.+ regexps 2021-02-24 17:58:28 +02:00
Aliaksandr Valialkin
d136081040 lib/promrelabel: add more optimizations for relabeling for common cases 2021-02-22 16:33:55 +02:00
Aliaksandr Valialkin
dd1e53b119 lib/promrelabel: optimize relabeling performance for common cases 2021-02-22 00:51:13 +02:00
Aliaksandr Valialkin
83df20b5b5 lib/promscrape: clean references to label name and label value strings after applying per-target relabeling
This should reduce memory usage when per-target relabeling creates big number of temporary labels
with long names and/or values.

See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/825
2020-11-07 16:19:59 +02:00
Aliaksandr Valialkin
f42194d817 lib/promrelabel: make a copy of label with new name for action: labelmap in the same way as Prometheus does
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/812
2020-10-05 16:19:19 +03:00
Aliaksandr Valialkin
2a39ba639d lib/promrelabel: add support for keep_if_equal and drop_if_equal actions to relabel configs
These actions may be useful for filtering out unneeded targets and/or metrics if they contain equal label values.
For example, the following rule would leave the target only if __meta_kubernetes_annotation_prometheus_io_port
equals __meta_kubernetes_pod_container_port_number:

  - action: keep_if_equal
    source_labels: [__meta_kubernetes_annotation_prometheus_io_port, __meta_kubernetes_pod_container_port_number]
2020-06-23 17:29:03 +03:00
Aliaksandr Valialkin
5820c0ffb7 lib/promrelabel: allows regex capture groups in target_label like Prometheus does
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/569
2020-06-19 02:21:24 +03:00
Aliaksandr Valialkin
69004a5f67 lib/promscrape: fix tests after the commit 658a8742ac
The original commit copies `__address__` label to `instance` label when generating per-target labels as Prometheus does.

See https://www.robustperception.io/life-of-a-label for details.

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/453
2020-05-03 16:56:15 +03:00
DexterZhang
658a8742ac
fix(vmagent): different behavior as how prometheus deal with labels. [Issue#453] (#454) 2020-05-03 16:51:03 +03:00
Aliaksandr Valialkin
3b234d82e5 lib/promscrape: reload only modified scrapers on config changes
This should improve scrape stability when big number of targets are scraped and these targets are frequently changed.

Thanks to @xbsura for the idea and initial implementation attempts at the following pull requests:

- https://github.com/VictoriaMetrics/VictoriaMetrics/pull/449
- https://github.com/VictoriaMetrics/VictoriaMetrics/pull/458
- https://github.com/VictoriaMetrics/VictoriaMetrics/pull/459
- https://github.com/VictoriaMetrics/VictoriaMetrics/pull/460
2020-05-03 12:45:40 +03:00
Aliaksandr Valialkin
78863d7066 lib/promscrape: add promrelabel.GetLabelValueByName helper function 2020-04-14 14:12:01 +03:00
Aliaksandr Valialkin
6a75c95194 lib/promscrape: remove labels starting with __meta_ after applying relabel_configs as Prometheus does
This should reduce CPU load during scraping when target discovery generates
big number of `__meta_*` labels (for instance, k8s discovery).

See https://www.robustperception.io/life-of-a-label for details.
2020-04-14 12:23:22 +03:00
Aliaksandr Valialkin
04762344c6 app/vmagent: initial implementation for vmagent 2020-02-23 13:36:03 +02:00