* feat: Support zstd encoding
This allows endpoints to respond with zstd compressed metric data, if
the requester supports it.
I have imported a content-encoding parser from
https://github.com/golang/gddo which is an archived repository to
support different content-encoding headers.
Signed-off-by: Manuel Rüger <manuel@rueg.eu>
* Update prometheus/promhttp/http.go
Co-authored-by: Bartlomiej Plotka <bwplotka@gmail.com>
Signed-off-by: Manuel Rüger <manuel@rueg.eu>
* Update prometheus/promhttp/http.go
Co-authored-by: Bartlomiej Plotka <bwplotka@gmail.com>
Signed-off-by: Manuel Rüger <manuel@rueg.eu>
* Update prometheus/promhttp/http.go
Co-authored-by: Bartlomiej Plotka <bwplotka@gmail.com>
Signed-off-by: Manuel Rüger <manuel@rueg.eu>
* Integrate review comments
* String typed enum
Signed-off-by: Manuel Rüger <manuel@rueg.eu>
* Test with gzip compression
Signed-off-by: Manuel Rüger <manuel@rueg.eu>
* Update prometheus/promhttp/http.go
Co-authored-by: Bartlomiej Plotka <bwplotka@gmail.com>
Signed-off-by: Manuel Rüger <manuel@rueg.eu>
* Reorder error handling
Signed-off-by: Manuel Rüger <manuel@rueg.eu>
* Apply suggestions from code review
Co-authored-by: Bartlomiej Plotka <bwplotka@gmail.com>
Signed-off-by: Manuel Rüger <manuel@rueg.eu>
* Include review suggestions
Signed-off-by: Manuel Rüger <manuel@rueg.eu>
---------
Signed-off-by: Manuel Rüger <manuel@rueg.eu>
Co-authored-by: Bartlomiej Plotka <bwplotka@gmail.com>
* testutil compareMetricFamilies: make less error-prone
The functions `GatherAndCompare`, `ScrapeAndCompare` and others that use
`compareMetricFamilies` under the hood can return no error if
`metricNames` includes none of the names found in the scraped/gathered
results. To avoid false Positves (an error being the negative case), we
can return an error if there is is at least one name in `metricNames`
that is not in the filtered results.
Fixes: https://github.com/prometheus/client_golang/issues/1351
Signed-off-by: leonnicolas <leonloechner@gmx.de>
* Add missing metricNames to error
In to see which metric names are missing, we can add them to the error
message.
Signed-off-by: leonnicolas <leonloechner@gmx.de>
* Apply suggestions from code review
- remove if nil check
- use two nested loops instead of map
- use new function `hasMetricByName` for readability
Co-authored-by: Bartlomiej Plotka <bwplotka@gmail.com>
Signed-off-by: leonnicolas <60091705+leonnicolas@users.noreply.github.com>
* prometheus/testutil/testutil_test.go: compare complete error
Before we would only compare the error prefix in `TestScrapeAndCompare`.
Signed-off-by: leonnicolas <leonloechner@gmx.de>
---------
Signed-off-by: leonnicolas <leonloechner@gmx.de>
Signed-off-by: leonnicolas <60091705+leonnicolas@users.noreply.github.com>
Co-authored-by: Bartlomiej Plotka <bwplotka@gmail.com>
CollectAndFormat is a helper function that returns the formatted metrics
to the caller, allowing them to use it how they want. This is different
to CollectAndCompare where the comparison is done strictly on behalf of
the caller. Often it is more convenient to perform a simple substring
match on the formatted metric.
Signed-off-by: Jack Cassidy <j.cassidy45@gmail.com>
If the ResponseWriter implements any of the following methods,
the ResponseController will call them as appropriate:
Flush()
FlushError() error // alternative Flush returning an error
Hijack() (net.Conn, *bufio.ReadWriter, error)
SetReadDeadline(deadline time.Time) error
SetWriteDeadline(deadline time.Time) error
EnableFullDuplex() error
If the ResponseWriter doesn't implement the methods,
the ResponseController will call Unwrap() method until it
finds a ResponseWriter in the chain
This commit implements Unwrap() method to simply return the
wrapped ResponseWriter
Signed-off-by: Igor Drozdov <ihardrozdov@gmail.com>
Change the lintMetricTypeInName linter inside promlint to only trigger an error when the metric name matches the type of the metric.
Signed-off-by: foehammer127 <foehammer@disroot.org>
* Remove support for go 1.19
Signed-off-by: Arthur Silva Sens <arthur.sens@coralogix.com>
* Replace rand.Seed, deprecated in go 1.20
Signed-off-by: Arthur Silva Sens <arthur.sens@coralogix.com>
---------
Signed-off-by: Arthur Silva Sens <arthur.sens@coralogix.com>
* collectors/version: Move to collectors directory and remove unrelated code.
Signed-off-by: Arthur Silva Sens <arthur.sens@coralogix.com>
* examples: Add Version Collector example
Signed-off-by: Arthur Silva Sens <arthur.sens@coralogix.com>
---------
Signed-off-by: Arthur Silva Sens <arthur.sens@coralogix.com>
Due to an inconsistency in the text protocol between encoding and
decoding, it was not possible to use the testutil.CollectAndCompare
function to test metrics with empty help values. To fix this, normalize
empty help values from the expected/want side of the test so that they
compare correctly with empty values on the actual/got side of the test.
Signed-off-by: Billy Keyes <bluekeyes@gmail.com>
* Refactor promlint validation structure
Signed-off-by: João Vilaça <jvilaca@redhat.com>
* Add support for custom validations in promlint
Signed-off-by: João Vilaça <jvilaca@redhat.com>
* Keep backwards compatibility
Signed-off-by: João Vilaça <jvilaca@redhat.com>
---------
Signed-off-by: João Vilaça <jvilaca@redhat.com>
* proccess_collector: add wasip1 stub
This resolves build failures like this when using the wasip1 support:
# github.com/prometheus/procfs
../../../go/pkg/mod/github.com/prometheus/procfs@v0.11.1/fs_statfs_type.go:25:18: undefined: syscall.Statfs_t
../../../go/pkg/mod/github.com/prometheus/procfs@v0.11.1/fs_statfs_type.go:26:17: undefined: syscall.Statfs
See https://go.dev/blog/wasi.
Signed-off-by: Stephan Renatus <stephan@styra.com>
* add build tags
Signed-off-by: Stephan Renatus <stephan@styra.com>
---------
Signed-off-by: Stephan Renatus <stephan@styra.com>
* Extend Counters, Summaries and Histograms with creation timestamp
Signed-off-by: Arthur Silva Sens <arthur.sens@coralogix.com>
* Backport created timestamp to existing tests
Signed-off-by: Arthur Silva Sens <arthur.sens@coralogix.com>
* Last touches (readability and consistency)
Changes:
* Comments for "now" are more explicit and not inlined.
* populateMetrics is simpler and bit more efficient without timestamp to time to timestamp conversionts for more common code.
* Test consistency and simplicity - the fewer variables the better.
* Fixed inconsistency for v2 and MetricVec - let's pass opt.now consistently.
* We don't need TestCounterXXXTimestamp - we test CT in many other places already.
* Added more involved test for counter vectors with created timestamp.
* Refactored normalization for simplicity.
* Make histogram, summaries now consistent.
* Simplified histograms CT flow and implemented proper CT on reset.
TODO for next PRs:
* NewConstSummary and NewConstHistogram - ability to specify CTs there.
Signed-off-by: bwplotka <bwplotka@gmail.com>
* Update prometheus/counter_test.go
Co-authored-by: Arthur Silva Sens <arthursens2005@gmail.com>
Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com>
---------
Signed-off-by: Arthur Silva Sens <arthur.sens@coralogix.com>
Signed-off-by: bwplotka <bwplotka@gmail.com>
Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com>
Co-authored-by: bwplotka <bwplotka@gmail.com>
By upgrading prometheus/client_model, several test functions had to be re-written due to 2 breaking changes made in protobuf when parsing messages to text:
1. '<' and '>' characters were replaced with '{' and '}' respectively.
2. The text format is non-deterministic. More information in https://github.com/golang/protobuf/issues/1121
Signed-off-by: Arthur Silva Sens <arthur.sens@coralogix.com>
* Add Go 1.21 support
Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com>
* Update README.md
Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com>
---------
Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com>
Fix a few typos / grammatical errors in the Godoc comments for promauto.
Only trivial stuff but slightly helps readability of the docs.
Signed-off-by: Chris Banks <chris.banks@digital.cabinet-office.gov.uk>
This commit fixes a data race that exists when the metric used in any
`promhttp` middleware doesn't collect the `code` and `method` but uses
`WithLabelFromCtx` to collect values from context.
The problem happens because when no `code` and `method` tags are
collected, the `labels` function returns a pre-initialized map
`emptyLabels` for every request.
When one or multipe `WithLabelFromCtx` options are configured, the
returned map from the `labels` function call is used to collect the
metrics from context which creates a multi-write data race.
Signed-off-by: Tiago Silva <tiago.silva@goteleport.com>
Fixes#1127.
If a native histogram has no observations and a zero threshold of
zero, then it is indistinguishable from a classic histogram. To give
scrapers a hint that it is indeed a native histogram, we add a no-op
span.
This needs follow-up PRs in prometheus/prometheus and
prometheus/client_model.
Signed-off-by: beorn7 <beorn@grafana.com>
Arianna Vespri