Aliaksandr Valialkin
616175b1ce
lib/promutils: properly return error when incorrect Prometheus label names are passed to NewLabelsFromString()
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Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/4284
See also https://github.com/VictoriaMetrics/VictoriaMetrics/pull/4304
2023-05-12 16:52:29 -07:00
Aliaksandr Valialkin
e3a91b186a
lib/protoparser/prometheus: optimize GetRowsDiff() function
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This should help https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1745 ,
since the provided profile shows that the majority of CPU and memory is spent in this function
during `streamParse` when `-promscrape.noStaleMarkers` wasn't set.
2021-10-27 18:54:45 +03:00
Aliaksandr Valialkin
463a5bf76e
lib/protoparser: go fmt
2021-09-29 21:19:00 +03:00
Aliaksandr Valialkin
58964d52a5
lib/protoparser/prometheus: compare invalid Prometheus lines in full
2021-09-29 19:41:28 +03:00
Aliaksandr Valialkin
f3e89754a9
lib/promscrape: reduce CPU usage for common case when calculating scrape_series_added metric
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Also reduce CPU usage when applying `series_limit` to scrape targets with constant set of metrics.
The main idea is to perform the calculations on scrape_series_added and series_limit
only if the set of metrics exposed by the target has been changed.
Scrape targets rarely change the set of exposed metrics,
so this optimization should reduce CPU usage in general case.
2021-09-12 12:53:14 +03:00
Aliaksandr Valialkin
9286107e82
lib/promscrape: send stale markers for disappeared metrics like Prometheus does
2021-09-11 10:51:04 +03:00
Aliaksandr Valialkin
22b1941cfc
lib/promscrape/discovery/ec2: follow-up after f6114345de
2021-03-02 13:46:26 +02:00
Aliaksandr Valialkin
937f382938
lib/protoparser/prometheus: properly unescape label values in Prometheus exposition format
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Unescape only `\n`, `\"` and `\\` sequences as Prometheus does. Other escape sequences shouldn't be unescaped.
2021-03-02 13:21:43 +02:00
Aliaksandr Valialkin
9abb2d6c74
lib/protoparser/prometheus: follow-up commit after 7d38627b9f6f212ae602aea6a72f469fe3c70ba2
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Document the bugfix in docs/CHANGELOG.md and add a test for the bugfix.
2020-12-16 23:40:17 +02:00
Aliaksandr Valialkin
a906b3862f
lib/protoparser/prometheus: properly parse OpenMetrics timestamps
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OpenMetrics timestamps are floating-point numbers, that represent Unix timestamp in seconds.
This differs from Prometheus exposition format, where timestamps are integer numbers representing Unix timestamp in milliseconds.
2020-11-27 14:54:29 +02:00
Aliaksandr Valialkin
ae04378424
lib/protoparser/prometheus: properly parse "infinity" values in OpenMetrics format
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Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/924
2020-11-24 19:03:38 +02:00
Aliaksandr Valialkin
b7f4fc6e0d
lib/protoparser/prometheus: properly parse metrics with exemplars
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Examplars have been introduced in OpenMetrics - see https://github.com/OpenObservability/OpenMetrics/blob/master/OpenMetrics.md#exemplars-1
Previously VictoriaMetrics couldn't parse the following metric
foo{bar="baz"} 123 # exemplar here
This commit fixes this. Note that VictoriaMetrics ignores the exemplar as for now.
2020-11-24 12:34:56 +02:00
Aliaksandr Valialkin
d8183c3124
lib/protoparser: report more errors for incorrect timestamps and/or values
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Previously certain errors in timestamps and/or values could be silently skipped,
which could lead to samples with zero values stored in the database.
Updates https://github.com/VictoriaMetrics/vmctl/issues/25
2020-09-16 02:14:18 +03:00
Aliaksandr Valialkin
865610a7c8
lib/protoparser/prometheus: add a test for cassandra-exporter
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Thanks to Seva
2020-07-27 18:37:11 +03:00
Aliaksandr Valialkin
69004a5f67
lib/promscrape: fix tests after the commit 658a8742ac
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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
Aliaksandr Valialkin
1d7ab78b55
lib/protoparser/prometheus: allow trailing comma in tags list
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The trailing comma is generated by cloudwatch exporter.
See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/350
2020-03-02 22:22:09 +02:00
Aliaksandr Valialkin
71a52f5f90
lib/protoparser/prometheus: skip leading whitespace from tag names
2020-02-16 19:06:33 +02:00
Aliaksandr Valialkin
2a0a0ed14d
lib/protoparser: add parser for Prometheus exposition text format
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This parser will be used by vmagent
2020-01-24 20:11:02 +02:00
