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Author SHA1 Message Date
Brian Brazil 69f5fa0c1e promql: Add vector function. 
Currently the only way to convert a scalar to a vector is to
use absent(), which isn't very clean. This adds a vector()
function that's the inverse of scalar() and lets your optionally
set labels.

Example usage would be
vector(time() % 86400) < 3600
to filter to only the first hour of the day.
 2015-09-11 12:09:34 +01:00
Brian Brazil 9ec11b1847 Merge pull request #1049 from prometheus/bool-nofilter 
promql: Add 'bool' modifier to comparison functions
 2015-09-03 15:08:38 +01:00
Brian Brazil 29e8dc2c49 promql: Add 'bool' modifier to comparison functions 
When doing comparison operations on vectors, filtering
sometimes gets in the way and you have to go to a fair bit of
effort to workaround it in order to always return a result.
The 'bool' modifier instead of filtering returns 0/1 depending
on the result of the compairson.

This is also a prerequisite to removing plain scalar/scalar comparisons,
as it maintains the current behaviour under a new syntax.
 2015-09-02 14:51:44 +01:00
Julius Volz 61c42c8da0 Change relabel_replace() to do full-string matches. 
THIS IS A BREAKING CHANGE.

Fixes part of https://github.com/prometheus/prometheus/issues/996
 2015-09-01 15:49:28 +02:00
Julius Volz 744d5d5a7a Merge pull request #1029 from prometheus/vet-fixes 
Fix "go vet" errors.
 2015-08-26 12:50:18 +02:00
Julius Volz 995d3b831d Fix most golint warnings. 
This is with `golint -min_confidence=0.5`.

I left several lint warnings untouched because they were either
incorrect or I felt it was better not to change them at the moment.
 2015-08-26 12:44:46 +02:00
Julius Volz 963ad82dcb Fix "go vet" errors. 
I ignored all errors of the type "composite literal uses unkeyed
fields". Most of them are wrong because of
https://github.com/golang/go/issues/9171.
 2015-08-26 02:05:04 +02:00
Julius Volz 077a753e6b Merge pull request #1006 from prometheus/true-values 
promql: Remove interpolation of vector values.
 2015-08-25 16:11:07 +02:00
Fabian Reinartz d6b8da8d43 Switch promql types to common/model 2015-08-25 13:49:14 +02:00
Brian Brazil fb585e4591 promql: Remove interpolation of vector values. 
The current behaviour produces values that are not
from rules or scrapes. So if for example I have
a boolean 0/1 it can be returned as 0.2344589. This
prevents a number of advanced use cases, introduces
race conditions and can produce misleading graphs.
 2015-08-24 17:37:31 +01:00
Fabian Reinartz 1535ef1457 Replace metric.SamplePair with model.SamplePair 2015-08-22 14:52:35 +02:00
Fabian Reinartz 438e232c9b Fix grouping of import blocks 2015-08-22 09:42:45 +02:00
Fabian Reinartz 306e8468a0 Switch from client_golang/model to common/model 2015-08-21 13:33:38 +02:00
Brian Brazil 296f551418 Merge pull request #1014 from prometheus/scalar-rules 
rules: Allow recorded rules expressions to be scalars.
 2015-08-19 22:10:49 +01:00
Brian Brazil e6a67476c2 rules: Allow recorded rules expressions to be scalars. 
This is useful if you want to build up a constant metric,
such as a set of alert thresholds that vary by label value.
 2015-08-19 21:09:00 +01:00
Laurie Malau cdf38ab93a Log runtime errors during query evaluation instead of panicking. 2015-08-19 16:56:41 +02:00
Julius Volz 27ed874358 Implement label_replace() 
Implements part of https://github.com/prometheus/prometheus/issues/959.
 2015-08-18 14:20:07 +02:00
Fabian Reinartz 690b5f1575 Remove multi-statement queries 
This commit removes the possibility to have multi-statement queries
which had no full support anyway. This makes the caller responsible
for multi-statement semantics.
Multiple tests are no longer timing-dependent.
 2015-08-10 14:26:20 +02:00
Julius Volz e324910ff2 Merge pull request #936 from prometheus/predict 
promql: Add support for predict(my_timeseries[1h], 2h)
 2015-08-05 16:40:51 +02:00
Brian Brazil d6a80c2b76 promql: Add support for predict_linear(my_timeseries[1h], 7200) 
This will give a prediction for the value of my_timeseries in 2 hours,
based on the last hour of data.
 2015-08-05 15:16:49 +01:00
Fabian Reinartz 579fdf65e2 Implement unary expression for vector types. 
Closes #956
 2015-08-04 15:46:36 +02:00
Fabian Reinartz c322422412 Merge pull request #954 from prometheus/fabxc/fuzz-fix 
Add missing check for nil expression
 2015-08-03 16:48:20 +02:00
Fabian Reinartz adf109795c forbid unexpected (runtime) errors in parse tests 2015-08-03 12:53:31 +02:00
Fabian Reinartz c20e25f718 Add missing check for nil expression 2015-08-03 12:28:40 +02:00
Brian Brazil a0f0b82348 promql: Test errors aren't always ParseErr 2015-08-02 23:26:21 +01:00
Fabian Reinartz 5279d50d92 Handle parser runtime panics gracefully 2015-08-02 13:42:18 +02:00
Julius Volz 4e4b468fba Fix lexer bug treating non-Latin Unicode digits as digits. 
Fixes https://github.com/prometheus/prometheus/issues/939
 2015-07-29 02:11:13 +02:00
Fabian Reinartz 3d67d75935 promql: implement JSON array format for scalar and string 2015-07-06 13:09:26 +02:00
Fabian Reinartz 77e8983221 promql: add MarshalJSON method for SamplePair 2015-07-06 10:29:59 +02:00
Fabian Reinartz c1d37bc55b Merge pull request #843 from prometheus/fabxc/runbook 
promql: add runbook to alert statement.
 2015-06-25 14:07:45 +02:00
Fabian Reinartz 70d7a987a7 promql: add json tags, fix query constructor. 2015-06-25 13:44:05 +02:00
Fabian Reinartz 749ae450c5 promql: add runbook to alert statement. 
This commit adds the RUNBOOK keyword to alert statements. The field
is optional and expected to be a link.
 2015-06-25 13:00:52 +02:00
Fabian Reinartz 7f85b9b215 promql: add MarshalJSON method for ExprType. 2015-06-25 12:01:26 +02:00
Fabian Reinartz 1eff186555 Merge pull request #810 from prometheus/fabxc/lmatch 
Match empty labels.
 2015-06-22 15:45:50 +02:00
Fabian Reinartz 5b91ea9b36 storage: improve label matching and allow unset matching. 
Matching of empty labels now also matches metrics where the label
was not explicitly set to the empty string.
 2015-06-22 15:33:44 +02:00
Fabian Reinartz 94cd321be1 promql: error if all label matchers are empty. 2015-06-22 15:33:44 +02:00
Fabian Reinartz fe301d7946 promql: remove global flags 2015-06-15 19:01:06 +02:00
Julius Volz 5e2d1c1464 Deprecate keeping_extra, rename it to keep_common. 
`keep_common` is more in line with the function name
`drop_common_labels()` terminology-wise, and also more in line with
`group_left`/`group_right` (no `...ing` verb suffix).

We could also go the full way and call it `keep_common_labels`. That
would have the benefit of being even more consistent with the function
`drop_common_labels()` and would be more explanatory, but it also seems
quite long.
 2015-06-12 14:21:05 +02:00
Fabian Reinartz e7659f908c promql: remove DotGraph methods from nodes. 2015-06-12 09:48:14 +02:00
Fabian Reinartz c716d8a47b promql: fix aggregation expression String() method. 
Fixes #794.
 2015-06-12 09:48:01 +02:00
Fabian Reinartz c32ae22119 promql: fix missing metric in range results. 2015-06-11 23:50:53 +02:00
Fabian Reinartz 0acd44b0e3 promql: expose ParseMetric and ParseMetricSelector 2015-06-11 12:22:11 +02:00
Fabian Reinartz cb10ceac18 promql: allow scalar expressions in range queries, improve errors. 
These changes allow to do range queries over scalar expressions.
Errors on bad types for range queries are now raised on query creation
rather than evaluation.
 2015-06-10 18:36:02 +02:00
Fabian Reinartz ab9c98acac web/api: add initial API v1 implementation. 2015-06-06 21:47:36 +02:00
Fabian Reinartz 03b737322e promql: expose storage and query engine for tests 2015-06-04 19:00:22 +02:00
Fabian Reinartz 319068a7a6 promql: fix parsing ambiguity for serial repetitions 2015-06-04 19:00:22 +02:00
Fabian Reinartz c60e3387ef promql: fix lexing of \r as whitespaces 2015-06-02 18:33:49 +02:00
Fabian Reinartz 0de6edbdfc Move pkg/ to util/ 2015-06-01 21:12:32 +02:00
Fabian Reinartz dbc0d30e3e Move string functionality to pkg/strutil 2015-06-01 21:12:32 +02:00
Fabian Reinartz ccf51b132e Move stats package to pkg/stats 2015-06-01 21:12:31 +02:00