Commit Graph

22 Commits (cce2f30a8bd410b53ea3fe774e9d261752cb3ddb)

Author SHA1 Message Date
Julius Volz 72d7b325a1 Implement offset operator.
This allows changing the time offset for individual instant and range
vectors in a query.

For example, this returns the value of `foo` 5 minutes in the past
relative to the current query evaluation time:

    foo offset 5m

Note that the `offset` modifier always needs to follow the selector
immediately. I.e. the following would be correct:

    sum(foo offset 5m) // GOOD.

While the following would be *incorrect*:

    sum(foo) offset 5m // INVALID.

The same works for range vectors. This returns the 5-minutes-rate that
`foo` had a week ago:

    rate(foo[5m] offset 1w)

This change touches the following components:

* Lexer/parser: additions to correctly parse the new `offset`/`OFFSET`
  keyword.
* AST: vector and matrix nodes now have an additional `offset` field.
  This is used during their evaluation to adjust query and result times
  appropriately.
* Query analyzer: now works on separate sets of ranges and instants per
  offset. Isolating different offsets from each other completely in this
  way keeps the preloading code relatively simple.

No storage engine changes were needed by this change.

The rules tests have been changed to not probe the internal
implementation details of the query analyzer anymore (how many instants
and ranges have been preloaded). This would also become too cumbersome
to test with the new model, and measuring the result of the query should
be sufficient.

This fixes https://github.com/prometheus/prometheus/issues/529
This fixed https://github.com/prometheus/promdash/issues/201
2015-02-18 02:41:27 +01:00
Bjoern Rabenstein 5859b74f1b Clean up license issues.
- Move CONTRIBUTORS.md to the more common AUTHORS.
- Added the required NOTICE file.
- Changed "Prometheus Team" to "The Prometheus Authors".
- Reverted the erroneous changes to the Apache License.
2015-01-21 20:07:45 +01:00
Brian Brazil ffa2e73803 Fix regression from 5e8d57bec1
0 is a false value, so shortcutting no longer works.
Update other places in the code that assumed graph was the default.
2014-12-27 00:28:36 +00:00
Julius Volz cc27fb8aab Rename remaining all-caps constants in AST layer.
Change-Id: Ibe97e30981969056ffcdb89e63c1468ea1ffa140
2014-12-25 01:30:47 +01:00
Bjoern Rabenstein b1e4956142 Apply a giant code cleanup.
Essentially:

- Remove unused code.

- Make it 'go vet' clean. The only remaining warnings are in generated code.

- Make it 'golint' clean. The only remaining warnings are in gerenated code.

- Smoothed out same minor things.

Change-Id: I3fe5c1fbead27b0e7a9c247fee2f5a45bc2d42c6
2014-12-10 16:16:49 +01:00
Brian Brazil 8be993b8f8 Let consoles get graph links from experssions.
Rename ConsoleLinkFromExpression, as we now have consoles.

Change-Id: I7ed2c9c83863adb390b51121dd9736845f7bcdfc
2014-07-25 13:31:47 +01:00
Julius Volz c7c0b33d0b Add regex-matching support for labels.
There are four label-matching ops for selecting timeseries now:

- Equal: =
- NotEqual: !=
- RegexMatch: =~
- RegexNoMatch: !~

Instead of looking up labels by a simple clientmodel.LabelSet (basically
an equals op for every key/value pair in the set), timeseries
fingerprint selection is now done via a list of metric.LabelMatchers.

Change-Id: I510a83f761198e80946146770ebb64e4abc3bb96
2014-04-01 14:24:53 +02:00
Julius Volz 3f226c9724 Rename {Scalar,Vector}Literal to {Scalar,Vector}Selector.
Change-Id: Ie92301f47f5f49f30b3a62c365e377108982b080
2014-02-22 22:33:42 +01:00
Julius Volz 6dc36d0c3e Don't keep extra labels in aggregations by default.
MIN/MAX/SUM/AVG/COUNT aggregations will now by default drop all labels that are
not specifically part of a BY-clause, even if a label value is the same within
all timeseries of an aggregation group. The old behavior of keeping extra
labels may still be switched on by adding KEEPING_EXTRA to the end of an
aggregation statement:

  sum(http_requests) by (job, method) keeping_extra

I'm open to better syntax/naming suggestions.

Change-Id: I21d3fe7af9e98552ce3dffa3ce7c0a4ba4c0b4a4
2013-12-16 12:53:10 +01:00
Julius Volz 1eb1ceac8c Add alert-expression console links to notifications.
The ConsoleLinkForExpression() function now escapes console URLs in such a way
that works both in emails and in HTML.

Change-Id: I917bae0b526cbbac28ccd2a4ec3c5ac03ee4c647
2013-08-20 15:45:41 +02:00
Julius Volz 35ee2cd3cb Add alertmanager notification support to Prometheus.
Alert definitions now also have mandatory SUMMARY and DESCRIPTION fields
that get sent along a firing alert to the alert manager.
2013-07-30 17:23:41 +02:00
Matt T. Proud 30b1cf80b5 WIP - Snapshot of Moving to Client Model. 2013-06-25 15:52:42 +02:00
Julius Volz 0226d1ac7a Implement alerts dashboard and expression console links. 2013-06-13 22:35:40 +02:00
Julius Volz 74cb676537 Implement Stringer interface for rules and all their children. 2013-06-07 15:54:32 +02:00
Julius Volz 0877680761 Implement a COUNT ... BY aggregation operator.
This also removes the now obsolete scalar count() function and corrects the
expressions test naming (broken in
2202cd71c9 (L6R59))
so that the expression tests will actually run.
2013-05-08 16:35:16 +02:00
Julius Volz c0601abf46 Implement initial no-op alert parsing and rule parsing tests. 2013-04-23 13:48:24 +02:00
Julius Volz c3d31febd6 Move durationToString to common place and cleanup error handling. 2013-02-14 19:02:23 +01:00
Julius Volz 16d9dcd6a8 Add copyright notices to all remaining files. 2013-02-07 11:49:04 +01:00
Matt T. Proud ea54751431 Update import paths to new location.
This repository moved from matttproud/prometheus to
prometheus/prometheus, and all import paths need to be updated.
2013-01-27 18:49:45 +01:00
Julius Volz a555ded2b3 Add "w" (weeks) as a valid timeunit. 2013-01-22 02:27:26 +01:00
Julius Volz c52b959fda Fix matrix interval time calculation. 2013-01-11 01:12:34 +01:00
Julius Volz 56384bf42a Add initial config and rule language implementation. 2013-01-07 23:43:36 +01:00