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Author SHA1 Message Date
Nathan Baulch 50cd453c8f
chore: Fix typos (#14868)
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* Fix typos

---------

Signed-off-by: Nathan Baulch <nathan.baulch@gmail.com>
2024-09-10 22:32:03 +02:00
Björn Rabenstein 4ffb74dae4
Merge pull request #14810 from bboreham/fix-proto-parse-exemplar
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[BUGFIX] Protobuf scraping: reset exemplar position
2024-09-03 15:05:59 +02:00
Bryan Boreham d599c4b28c [BUGFIX] Protobuf scraping: reset exemplar position
Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
2024-09-02 16:43:50 +01:00
riskrole 406bf775aa chore: fix some comments
Signed-off-by: riskrole <yuhang@before.tech>
2024-08-28 11:26:57 +08:00
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
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
Björn Rabenstein 3db4596965
Merge pull request #13299 from vesari/add-unit-parser
protobuf: add unit parser
2024-01-09 14:47:50 +01:00
Arianna Vespri 8f07f9dd90 Avoid creating string for suffix, consider counters without _total suffix
Signed-off-by: Arianna Vespri <arianna.vespri@yahoo.it>
2023-12-28 15:41:38 +01:00
Arianna Vespri 9a664b515a Correct order in error message
Signed-off-by: Arianna Vespri <arianna.vespri@yahoo.it>
2023-12-20 09:41:37 +01:00
Arianna Vespri 51e78d9a32 Delete debugging lines, amend error message for unit
Signed-off-by: Arianna Vespri <arianna.vespri@yahoo.it>
2023-12-20 09:31:58 +01:00
Bryan Boreham 8065bef172 Move metric type definitions to common/model
They are used in multiple repos, so common is a better place for them.
Several packages now don't depend on `model/textparse`, e.g.
`storage/remote`.

Also remove `metadata` struct from `api.go`, since it was identical to
a struct in the `metadata` package.

Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
2023-12-19 18:56:54 +00:00
Arianna Vespri 3d6a92a25e Merge remote-tracking branch 'prometheus/main' into add-unit-parser 2023-12-17 14:11:55 +01:00
Arianna Vespri b65021d7a5 Get conditional right
Signed-off-by: Arianna Vespri <arianna.vespri@yahoo.it>
2023-12-17 14:09:14 +01:00
Arianna Vespri 9fb1e9715c Go on adding protobuf parsing for unit
Signed-off-by: Arianna Vespri <arianna.vespri@yahoo.it>
2023-12-14 17:00:52 +01:00
Arianna Vespri 5d5acf5744 Add unit protobuf parser
Signed-off-by: Arianna Vespri <arianna.vespri@yahoo.it>
2023-12-12 12:40:08 +01:00
Arthur Silva Sens 5082655392
Append Created Timestamps (#12733)
* Append created timestamps.

Signed-off-by: Arthur Silva Sens <arthur.sens@coralogix.com>

* Log when created timestamps are ignored

Signed-off-by: Arthur Silva Sens <arthur.sens@coralogix.com>

* Proposed changes to Append CT PR.

Changes:

* Changed textparse Parser interface for consistency and robustness.
* Changed CT interface to be more explicit and handle validation.
* Simplified test, change scrapeManager to allow testability.
* Added TODOs.

Signed-off-by: bwplotka <bwplotka@gmail.com>

* Updates.

Signed-off-by: bwplotka <bwplotka@gmail.com>

* Addressed comments.

Signed-off-by: bwplotka <bwplotka@gmail.com>

* Refactor head_appender test

Signed-off-by: Arthur Silva Sens <arthur.sens@coralogix.com>

* Fix linter issues

Signed-off-by: Arthur Silva Sens <arthur.sens@coralogix.com>

* Use model.Sample in head appender test

Signed-off-by: Arthur Silva Sens <arthur.sens@coralogix.com>

---------

Signed-off-by: Arthur Silva Sens <arthur.sens@coralogix.com>
Signed-off-by: bwplotka <bwplotka@gmail.com>
Co-authored-by: bwplotka <bwplotka@gmail.com>
2023-12-11 08:43:42 +00:00
zenador 32ee1b15de
Fix error on ingesting out-of-order exemplars (#13021)
Fix and improve ingesting exemplars for native histograms.

See code comment for a detailed explanation of the algorithm.

Note that this changes the current behavior for all kind of samples slightly: We now allow exemplars with the same timestamp as during the last scrape if the value or the labels have changed.

Also note that we now do not ingest exemplars without timestamps for native histograms anymore.

Signed-off-by: Jeanette Tan <jeanette.tan@grafana.com>
Signed-off-by: György Krajcsovits <gyorgy.krajcsovits@grafana.com>
Co-authored-by: Björn Rabenstein <github@rabenste.in>

---------

Signed-off-by: Jeanette Tan <jeanette.tan@grafana.com>
Signed-off-by: György Krajcsovits <gyorgy.krajcsovits@grafana.com>
Signed-off-by: zenador <zenador@users.noreply.github.com>
Co-authored-by: György Krajcsovits <gyorgy.krajcsovits@grafana.com>
Co-authored-by: Björn Rabenstein <github@rabenste.in>
2023-11-16 15:07:37 +01:00
Matthieu MOREL fe057fc60d use Go standard errors package
Signed-off-by: Matthieu MOREL <matthieu.morel35@gmail.com>
2023-11-03 07:26:31 +00:00
beorn7 b428416f06 textparse: Update comment about timestamp_ms protobuf parsing
By now, we know better what the plan is.

Signed-off-by: beorn7 <beorn@grafana.com>
2023-10-19 17:54:42 +02:00
Arthur Silva Sens ef8e6ae780
Parse created timestamps from Prometheus Protobuf (#12973)
Signed-off-by: Arthur Silva Sens <arthur.sens@coralogix.com>
2023-10-18 19:04:02 +01:00
beorn7 65ccf4460a textparse: Fix endless loop #12731
PR #12557 introduced the possibility of parsing multiple exemplars per
native histograms. It did so by requiring the `Exemplar` method of the
parser to be called repeatedly until it returns false. However, the
protobuf parser code wasn't correctly updated for the old case of a
single exemplar for a classic bucket (if actually parsed as a classic
bucket) and a single exemplar on a counter. In those cases, the method
would return `true` forever, yielding the same exemplar again and
again, leading to an endless loop.

With this fix, the state is now tracked and the single exemplar is
only returned once.

Signed-off-by: beorn7 <beorn@grafana.com>
2023-08-22 21:03:54 +02:00
György Krajcsovits e846736134 Fix typo
Signed-off-by: György Krajcsovits <gyorgy.krajcsovits@grafana.com>
2023-08-21 14:13:49 +02:00
beorn7 c58e20ad0e histogram: Identify native histograms even without observations
Native histograms without observations and with a zero threshold of
zero look the same as classic histograms in the protobuf exposition
format. According to
https://github.com/prometheus/client_golang/issues/1127 , the idea is
to add a no-op span to those histograms to mark them as native
histograms. This commit enables Prometheus to detect that no-op span
and adds a doc comment to the proto spec describing the behavior.

Signed-off-by: beorn7 <beorn@grafana.com>
2023-07-26 17:42:30 +02:00
beorn7 071f4bbea4 histograms: Fix parsing float histograms without zero bucket
If a float histogram has a zero bucket with a threshold of zero _and_
an empty zero bucket, it wasn't identified as a native histogram
because the `isNativeHistogram` helper function only looked at integer
buckets.

Signed-off-by: beorn7 <beorn@grafana.com>
2023-07-19 15:29:11 +02:00
beorn7 da047c6857 histograms: Fix bug #12552
The problem was the following:

When trying to parse native histograms and classic histograms in
parallel, the parser would first parse the histogram proto messages as
a native histogram and then parse the same message again, but now as a
classic histogram. Afterwards, it would forget that it was dealing
with a metric family that contains native histograms and would parse
the rest of the metric family as classic histograms only. The fix is
to check again after being done with a classic histogram.

Signed-off-by: beorn7 <beorn@grafana.com>
2023-07-12 18:47:00 +02:00
beorn7 9e500345f3 textparse/scrape: Add option to scrape both classic and native histograms
So far, if a target exposes a histogram with both classic and native
buckets, a native-histogram enabled Prometheus would ignore the
classic buckets. With the new scrape config option
`scrape_classic_histograms` set, both buckets will be ingested,
creating all the series of a classic histogram in parallel to the
native histogram series. For example, a histogram `foo` would create a
native histogram series `foo` and classic series called `foo_sum`,
`foo_count`, and `foo_bucket`.

This feature can be used in a migration strategy from classic to
native histograms, where it is desired to have a transition period
during which both native and classic histograms are present.

Note that two bugs in classic histogram parsing were found and fixed
as a byproduct of testing the new feature:

1. Series created from classic _gauge_ histograms didn't get the
   _sum/_count/_bucket prefix set.
2. Values of classic _float_ histograms weren't parsed properly.

Signed-off-by: beorn7 <beorn@grafana.com>
2023-05-13 01:32:25 +02:00
beorn7 c26891043f textparse: Set CounterResetHint
If a (float or integer) histogram is a gauge histogram, set the
CounterResetHint accordingly. (The default value is fine for the
normal counter histograms.)

Signed-off-by: beorn7 <beorn@grafana.com>
2023-01-10 16:25:23 +01:00
beorn7 b5d4a94e9d textparse: Add gauge histogram support to protobuf parsing
With this commit, the parser stops to see a gauge histogram (whether
native or conventional) as an unexpected metric type. It ingests it
normally, it even sets the `GaugeHistogram` type in the metadata (as
it has already done for a conventional gauge histogram scraped using
OpenMetrics), but it otherwise treats it as a normal counter-like
histogram.

Once #11783 is merged, though, it should be very easy to utilize the
type information.

Signed-off-by: beorn7 <beorn@grafana.com>
2023-01-05 15:39:10 +01:00
beorn7 e9d9bb1b08 textparse: Handle unknown metric types in protobuf gracefully
So far, the parser hasn't validated that the type is valid in the
`Next()` call. Later, in the `Series()` call, however, it assumes that
we will only see valid types and therefore panics with `encountered
unexpected metric type, this is a bug`.

This commit fixes said bug by adding validation to the `Next()` call.

Signed-off-by: beorn7 <beorn@grafana.com>
2023-01-05 15:21:18 +01:00
Bryan Boreham 1f04899ae3 Update package model/textparse for new labels.Labels type
Parse metrics using labels.ScratchBuilder, so we reduce assumptions about
internals of Labels.

Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
2022-12-19 15:22:09 +00:00
beorn7 a7c519930e histograms: Add Compact method to the normal integer Histogram
And use the new method to call to compact Histograms during
parsing. This happens for both `Histogram` and `FloatHistogram`. In
this way, if targets decide to optimize the exposition size by merging
spans with empty buckets in between, we still get a normalized
results. It will also normalize away any valid but weird
representations like empty spans, spans with offset zero, and empty
buckets at the start or end of a span.

The implementation seemed easy at first as it just turns the
`compactBuckets` helper into a generic function (which now got its own
file). However, the integer Histograms have delta buckets instead of
absolute buckets, which had to be treated specially in the generic
`compactBuckets` function. To make sure it works, I have added plenty
of explicit tests for `Histogram` in addition to the `FloatHistogram`
tests.

I have also updated the doc comment for the `Compact` method.

Based on the insights now expressed in the doc comment, compacting
with a maxEmptyBuckets > 0 is rarely useful. Therefore, this commit
also sets the value to 0 in the two cases we were using 3 so far. We
might still want to reconsider, so I don't want to remove the
maxEmptyBuckets parameter right now.

Signed-off-by: beorn7 <beorn@grafana.com>
2022-09-27 13:04:16 +02:00
Marc Tudurí f7df3b86ba
histograms: parse float histograms from proto definition (#11149)
* histograms: parse float histograms from proto definition

Signed-off-by: Marc Tuduri <marctc@protonmail.com>

* Improve comment

Signed-off-by: Marc Tuduri <marctc@protonmail.com>

* Ignore float buckets

Signed-off-by: Marc Tuduri <marctc@protonmail.com>

* Refactor Histogram() function

Signed-off-by: Marc Tuduri <marctc@protonmail.com>

* Fix test_float_histogram

Signed-off-by: Marc Tuduri <marctc@protonmail.com>

* Update model/textparse/protobufparse.go

Co-authored-by: Ganesh Vernekar <15064823+codesome@users.noreply.github.com>
Signed-off-by: Marc Tudurí <marctc@protonmail.com>

* Update protobufparse.go

Signed-off-by: Marc Tudurí <marctc@protonmail.com>

* Update scrape.go

Signed-off-by: Marc Tudurí <marctc@protonmail.com>

* Update scrape/scrape.go

Co-authored-by: Ganesh Vernekar <15064823+codesome@users.noreply.github.com>
Signed-off-by: Marc Tudurí <marctc@protonmail.com>

Signed-off-by: Marc Tuduri <marctc@protonmail.com>
Signed-off-by: Marc Tudurí <marctc@protonmail.com>
Co-authored-by: Ganesh Vernekar <15064823+codesome@users.noreply.github.com>
2022-08-25 20:37:41 +05:30
beorn7 c40b105efd histograms: Move to new exposition protobuf format
This is an incompatible protobuf change. Instrumented targets must
include https://github.com/prometheus/client_golang/pull/1092 to make
this work.

Signed-off-by: beorn7 <beorn@grafana.com>
2022-07-19 18:11:33 +02:00
beorn7 5d4db805ac Merge branch 'main' into sparsehistogram 2021-11-17 19:57:31 +01:00