Nikolay
41f7940f97
lib/streamaggr: properly reference slice with labels ( #5406 )
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* lib/streamaggr: properly reference slice with labels
by limiting slice capacity. It must fix issues with slice modification, in case of append new slice will be allocated, instead of modifying refrenced slice
https://github.com/VictoriaMetrics/VictoriaMetrics/issues/5402
* Reduce memory allocations when output_relabel_configs adds new labels to output samples
---------
Co-authored-by: Aliaksandr Valialkin <valyala@victoriametrics.com>
2023-11-29 10:03:04 +02:00
Aliaksandr Valialkin
42dd71bb63
all: consistently use %w instead of %s in when error is passed to fmt.Errorf()
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This allows consistently using errors.Is() for verifying whether the given error wraps some other known error.
2023-10-25 21:24:03 +02:00
Aliaksandr Valialkin
fdae53a75b
lib/promrelabel: properly replace : char with _ in metric names when -usePromCompatibleNaming command-line flag is set
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This addresses https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3113#issuecomment-1275077071 comment from @johnseekins
2023-08-14 16:14:42 +02:00
Aliaksandr Valialkin
63e3571e8c
lib/promrelabel: stop emitting DEBUG log lines when parsing if expressions
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These lines were accidentally left in the commit 62651570bbhttps://github.com/VictoriaMetrics/VictoriaMetrics/issues/4635
2023-08-14 15:24:31 +02:00
Zakhar Bessarab
1bd7637fe1
lib/promrelabel: fix relabeling if clause ( #4816 )
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* lib/promrelabel: fix relabeling if clause being applied to labels outside of current context
Relabeling is applied to each metric row separately, but in order to lower amount of memory allocations it is reusing labels.
Functions which are working on current metric row labels are supposed to use only current metric labels by using provided offset, but if clause matcher was using the whole labels set instead of local metrics.
This leaded to invalid relabeling results such as one described here: https://github.com/VictoriaMetrics/VictoriaMetrics/issues/4806
Signed-off-by: Zakhar Bessarab <z.bessarab@victoriametrics.com>
* docs/CHANGELOG.md: document the bugfix
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1998
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/4806
---------
Signed-off-by: Zakhar Bessarab <z.bessarab@victoriametrics.com>
Co-authored-by: Aliaksandr Valialkin <valyala@victoriametrics.com>
2023-08-11 06:37:48 -07:00
Aliaksandr Valialkin
ad08d9c884
lib/promrelabel: return correct string representation for IfExpression containing a single selector
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This is a follow-up for 62651570bbhttps://github.com/VictoriaMetrics/VictoriaMetrics/issues/4635
2023-07-24 19:33:14 -07:00
Aliaksandr Valialkin
62651570bb
lib/promrelabel: add support for a list of series selectors at IfExpression
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This makes possible specifying a list of series selectors at the following places:
- Inside `if` option at relabeling rules
- Inside `match` option at stream aggregation rules
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/4635
2023-07-24 17:08:52 -07:00
Aliaksandr Valialkin
4cb024d8a3
all: add support for or filters in series selectors
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This commit adds ability to select series matching distinct filters via a single series selector.
For example, the following selector selects series with either {env="prod",job="a"}
or {env="dev",job="b"} labels:
{env="prod",job="a" or env="dev",job="b"}
The `or` filter is supported in all the VictoriaMetrics tools now.
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3997
Uses https://github.com/VictoriaMetrics/metricsql/pull/14
2023-07-16 00:06:33 -07:00
Aliaksandr Valialkin
1f2f74e70e
lib/promrelabel: use monospace font at textarea for writing relabel configs on /metric-relabel-debug and /target-relabel-debug pages
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This simplifies visual inspection of indentation in yaml configs
2023-05-18 20:48:41 -07:00
Aliaksandr Valialkin
318a87c36f
Revert "lib/promrelabel: show error message if labels not in prometheus exposition format ( #4304 )"
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This reverts commit 193a9c3328https://github.com/prometheus/docs/blob/main/content/docs/instrumenting/exposition_formats.md#text-format-example
E.g. the promutils.NewLabelsFromString() must return error when the following strings are passed to it:
- `{foo:"bar"}`, since `:` is disallowed in Prometheus text exposition format. The corect value is `{foo="bar"}`
- `{"foo":"bar"}`, since label name shouldn't be quoted. The correct value is `{foo="bar"}`.
The reverted commit introduces another set of bugs, which happily accept the following invalid input:
- `{foo=~"bar"}`
- `{foo!="bar"}`
- `{foo!~"bar"}`
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/4284
See also https://github.com/VictoriaMetrics/VictoriaMetrics/pull/4304
2023-05-12 16:07:37 -07:00
Dmytro Kozlov
193a9c3328
lib/promrelabel: show error message if labels not in prometheus exposition format ( #4304 )
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lib/promrelabel: show error message if labels not in prometheus exposition format
https://github.com/VictoriaMetrics/VictoriaMetrics/issues/4284
2023-05-12 10:42:56 +02:00
Aliaksandr Valialkin
ec3943d14a
app/vmselect: small cleanup after 4f3f9950d0
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Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3807
2023-05-08 14:57:11 -07:00
Yury Molodov
4f3f9950d0
vmui: add metric relabel debug ( #3889 )
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* feat: add metric relabel debug (#3807 )
* fix: add link to relabeling cookbook
* lib/promrelabel: merge, fix conflicts
* lib/promrelabel: fix diff
* docs/vmui: add metric relabel playground
---------
Co-authored-by: dmitryk-dk <kozlovdmitriyy@gmail.com>
2023-04-26 11:53:29 +03:00
Dmytro Kozlov
e79cd24807
lib/promrelabel: make target url from labels on target relabel page ( #3882 )
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* lib/promrelabel: make target url from labels on target relabel page
* wip
---------
Co-authored-by: Aliaksandr Valialkin <valyala@victoriametrics.com>
2023-03-20 22:07:52 -07:00
Oleksandr Redko
9fff48c3e3
app,lib: fix typos in comments ( #3804 )
2023-02-13 13:27:13 +01:00
Aliaksandr Valialkin
1a28f0e5b3
lib/promrelabel: pass query args via query string at /metric-relabel-debug and /target-relabel-debug pages if their length doesnt exceed 1000
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This allows copy-n-pasting the url to another browser window and seeing the same result.
The limit in 1000 chars is selected in order to prevent from potential issues with systems
which limit the url length such as Internet Explorer - see https://stackoverflow.com/questions/812925/what-is-the-maximum-possible-length-of-a-query-string
If the limit is exceeded, then query args are sent via POST method and aren't visible in the url.
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3580
2023-01-05 16:48:04 -08:00
Aliaksandr Valialkin
0dea3b71da
lib/promscrape: pre-fetch metric_relabel_configs rules when debugging metric relabeling for a particular target
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Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3407
2023-01-05 03:26:49 -08:00
Aliaksandr Valialkin
5bca3a5be2
app/vmselect: remove dependency on lib/promscrape from app/vmselect
2023-01-03 23:28:27 -08:00
Aliaksandr Valialkin
add2c4bf07
lib/bytesutil: add InternBytes() function as a shortcut to InternString(ToUnsafeString(..))
2023-01-03 22:16:22 -08:00
Aliaksandr Valialkin
7b264b0c23
lib/promrelabel: allow calling Match on nil IfExpression
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This simplifies the caller side of IfExpression
2023-01-03 21:44:03 -08:00
Aliaksandr Valialkin
fa236c5a84
lib/promrelabel: make fmt after d3de110070
2022-12-21 20:24:57 -08:00
Aliaksandr Valialkin
31886aef3d
lib/promrelabel: add support for keepequal and dropequal relabeling actions
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These actions are supported by Prometheus starting from v2.41.0
See https://github.com/prometheus/prometheus/pull/11564 ,
https://github.com/prometheus/prometheus/issues/11556
and https://github.com/prometheus/prometheus/issues/3756
Side note:
It's a pity that Prometheus developers decided inventing `keepequal` and `dropequal`
relabeling actions instead of adding support for `keep_if_equal` and `drop_if_equal` relabeling
actions supported by VictoriaMetrics since June 2020 - see 2a39ba639d
2022-12-21 20:04:55 -08:00
Aliaksandr Valialkin
a8b8e23d68
lib/promscrape: implement target-level and metric-level relabel debugging
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Target-level debugging is performed by clicking the 'debug' link at the corresponding target
on either http://vmagent:8429/targets page or on http://vmagent:8428/service-discovery page.
Metric-level debugging is perfromed at http://vmagent:8429/metric-relabel-debug page.
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3407
See https://docs.victoriametrics.com/vmagent.html#relabel-debug
2022-12-10 02:09:44 -08:00
Aliaksandr Valialkin
14660d4df5
all: typo fix: the the -> the
2022-12-03 21:53:01 -08:00
Aliaksandr Valialkin
f325410c26
lib/promscrape: optimize service discovery speed
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- Return meta-labels for the discovered targets via promutils.Labels
instead of map[string]string. This improves the speed of generating
meta-labels for discovered targets by up to 5x.
- Remove memory allocations in hot paths during ScrapeWork generation.
The ScrapeWork contains scrape settings for a single discovered target.
This improves the service discovery speed by up to 2x.
2022-11-29 21:26:00 -08:00
Aliaksandr Valialkin
869e0f9f85
lib/promrelabel: go fmt after 5cec9706dc
2022-10-29 05:17:10 +03:00
Aliaksandr Valialkin
5cec9706dc
lib/promrelabel: add a test from https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3251
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Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3251
2022-10-29 04:33:38 +03:00
Aliaksandr Valialkin
518c340ae3
lib/envtemplate: allow referring env vars from other env vars via %{ENV_VAR} syntax
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This is a follow-up for 02096e06d0
2022-10-26 14:49:33 +03:00
Aliaksandr Valialkin
069401a304
all: log error when environment variables referred from -promscrape.config are missing
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This should prevent from using incorrect config files
2022-10-18 10:47:16 +03:00
Aliaksandr Valialkin
b6e8c1403a
lib/promrelabel: add relabeling tests when the source label is missing
2022-10-17 14:47:52 +03:00
Aliaksandr Valialkin
50f5eae0e0
lib/promrelabel: remove unconditional sorting of the labels in ParsedConfigs.Apply(), since the sorting isnt needed in many places
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Sort labels explicitly after calling the ParsedConfigs.Apply() when needed.
This reduces CPU usage when performing metric-level relabeling, where labels' sorting isn't needed.
2022-10-09 14:51:16 +03:00
Aliaksandr Valialkin
f9df0cae16
lib/promscrape: allow specifying full target url in __address__ label
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Previously the `__address__` label could contain only `host:port` part of the target url,
while the scheme and metrics path were obtained from `__scheme__` and `__metrics_path__`
labels. Now it is possible to set the full url in `__address__` label.
This makes valid the following scrape config, which is frequently used by novice users:
scrape_configs:
- job_name: foo
static_configs:
- targets:
- http://host1/metrics1
- https://host2/metrics2
2022-10-07 22:43:04 +03:00
Aliaksandr Valialkin
3a98ef2f5f
lib/promrelabel: export MustParseMetricWithLabels function, which can be used for simplifying tests
2022-10-01 16:05:51 +03:00
Aliaksandr Valialkin
e8a64f6e7a
lib/promrelabel: remove redundant memory allocations by using interned strings
2022-10-01 11:50:21 +03:00
Aliaksandr Valialkin
73dc17ef64
lib/promrelabel: add a benchmark for realistic Kubernetes relabeling
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The benchmark name is BenchmarkApplyRelabelConfigs/kubernetes
This benchmark has been copied from d521933053/model/relabel/relabel_test.go (L505)https://github.com/prometheus/prometheus/pull/11147
2022-10-01 10:38:22 +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
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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
fda60b3d4d
lib/promrelabel: properly parse regex with escaped $ at the end
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Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3131
Thanks to @dmitryk-dk for the initial fix at https://github.com/VictoriaMetrics/VictoriaMetrics/pull/3179
2022-09-30 08:15:43 +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
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Optimize this function by using results cache for input strings.
Use this function all over the code.
This is a follow-up for fcffdba9dchttps://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
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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
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This makes possible optimizing additional cases inside regexutil.PromRegex
2022-08-26 15:23:45 +03:00
Aliaksandr Valialkin
7afe8450fc
lib/promrelabel: optimize matching for commonly used regex patterns in if option
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The following regex patterns are optimized:
- literal string match, e.g. "foo"
- prefix match, e.g. "foo.*" and "foo.+"
- substring match, e.g. ".*foo.*" and ".+foo.+"
- alternate values match, e.g. "foo|bar|baz"
2022-08-26 14:53:06 +03:00
Aliaksandr Valialkin
0ad3bbadd3
lib/regexutil: add Simplify() function for simplifying the regular expression
2022-08-26 11:57:12 +03:00
Aliaksandr Valialkin
b373661988
lib/promrelabel: optimize action: {drop,keep,labeldrop,labelkeep} with anchored regex prefix
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The following commonly used relabeling rules must work faster now:
- action: labeldrop
regex: "^foo.+$"
- action: labeldrop
regex: "^bar.*"
2022-08-25 23:23:55 +03:00
Aliaksandr Valialkin
0d4ea03a73
lib/promrelabel: optimize action: {labeldrop,labelkeep,keep,drop} with regex containing alternate values
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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
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For example:
- target_label: composite-label
replacement: "{{source_label1}}-{{source_label2}}"
2022-08-21 22:50:01 +03:00
