prometheus

Commit Graph

Author	SHA1	Message	Date
Julien Pivotto	c92fbf3fdf	Add feature flag for PromQL experimental functions. This PR adds an Experimental flag to the functions. This can be used by https://github.com/prometheus/prometheus/pull/13059 but also xrate and other future functions. Signed-off-by: Julien Pivotto <roidelapluie@o11y.eu>	1 year ago
zenador	54aaa2bd7e	Add `histogram_stdvar` and `histogram_stddev` functions (#12614 ) * Add new function: histogram_stdvar and histogram_stddev Signed-off-by: Jeanette Tan <jeanette.tan@grafana.com>	1 year ago
Filip Petkovski	97c7fffbb8	parser: Allow parsing arbitrary functions In Thanos we would like to start experimenting with custom functions that are currently not part of the PromQL spec. We would do this by adding an implementation for those functions in the Thanos engine: https://github.com/thanos-community/promql-engine and allow users to decide which engine they want to use on a per-query basis. Since we use the PromQL parser from Prometheus, injecting functions in the global `Functions` variable would mean they also become available for the Prometheus engine. To avoid this side-effect, this commit exposes a Parser interface in which the supported functions can be injected as an option. If not functions are injected, the parser implementation will default to the functions defined in the global Functions variable. Signed-off-by: Filip Petkovski <filip.petkovsky@gmail.com>	2 years ago
beorn7	9eafed0f79	promql: Add `histogram_count` and `histogram_sum` This follow a simple function-based approach to access the count and sum fields of a native Histogram. It might be more elegant to implement “accessors” via the dot operator, as considered in the brainstorming doc [1]. However, that would require the introduction of a whole new concept in PromQL. For the PoC, we should be fine with the function-based approch. Even the obvious inefficiencies (rate'ing a whole histogram twice when we only want to rate each the count and the sum once) could be optimized behind the scenes. Note that the function-based approach elegantly solves the problem of detecting counter resets in the sum of observations in the case of negative observations. (Since the whole native Histogram is rate'd, the counter reset is detected for the Histogram as a whole.) We will decide later if an “accessor” approach is really needed. It would change the example expression for average duration in functions.md from histogram_sum(rate(http_request_duration_seconds[10m])) / histogram_count(rate(http_request_duration_seconds[10m])) to rate(http_request_duration_seconds.sum[10m]) / rate(http_request_duration_seconds.count[10m]) [1]: https://docs.google.com/document/d/1ch6ru8GKg03N02jRjYriurt-CZqUVY09evPg6yKTA1s/edit Signed-off-by: beorn7 <beorn@grafana.com>	2 years ago
beorn7	a3a8f58bb3	promql: Add histogram_fraction function Signed-off-by: beorn7 <beorn@grafana.com>	2 years ago
Ivo Gosemann	e22b54e253	Adds day_of_year function to PromQL Signed-off-by: Ivo Gosemann <ivo.gosemann@sap.com>	3 years ago
Levi Harrison	6faca22eec	Add inverse hyperbolic functions Signed-off-by: Levi Harrison <git@leviharrison.dev>	3 years ago
Levi Harrison	53d88fd147	Added hyperbolic trig functions Signed-off-by: Levi Harrison <git@leviharrison.dev>	3 years ago
Levi Harrison	ecc29d38b8	Fixed `pi` definition Signed-off-by: Levi Harrison <git@leviharrison.dev>	3 years ago
Levi Harrison	9fc7ba33aa	Remove `atan2()` Signed-off-by: Levi Harrison <git@leviharrison.dev>	3 years ago
Levi Harrison	d5ecdc4597	Remove variadic Signed-off-by: Levi Harrison <git@leviharrison.dev>	3 years ago
Levi Harrison	309e020c0a	Added functions Signed-off-by: Levi Harrison <git@leviharrison.dev>	3 years ago
Darshan Chaudhary	c4f2e9eec5	Add present_over_time (#9097 ) * Add present_over_time Signed-off-by: darshanime <deathbullet@gmail.com> * Add tests for present_over_time Signed-off-by: darshanime <deathbullet@gmail.com> * Address PR comments Signed-off-by: darshanime <deathbullet@gmail.com> * Add documentation for present_over_time Signed-off-by: darshanime <deathbullet@gmail.com> * Update documentation Signed-off-by: darshanime <deathbullet@gmail.com> * Update documentation comment Signed-off-by: darshanime <deathbullet@gmail.com>	3 years ago
pschou	aff3c702ab	promql: Add sgn, clamp and last_over_time functions (#8457 ) * Add sgn, clamp and last_over_time functions Signed-off-by: schou <pschou@users.noreply.github.com>	4 years ago
Tobias Guggenmos	65f5b9827d	Rename package Signed-off-by: Tobias Guggenmos <tguggenm@redhat.com>	5 years ago
Tobias Guggenmos	98a9b7c90c	Remove engine specific types Signed-off-by: Tobias Guggenmos <tguggenm@redhat.com>	5 years ago

16 Commits (362a0b0d143250df8e6cb83901fb52a46c3864de)