prometheus

Commit Graph

Author	SHA1	Message	Date
Fabian Reinartz	182de6b99f	Fix unary +/- expressions. Unary expressions cause parsing errors if they are done in the lexer by tokenizing them into the number. This fix moves unary expressions to the parser.	10 years ago
Fabian Reinartz	6f754073d5	Add OR operation and vector matching options. This commits implements the OR operation between two vectors. Vector matching using the ON clause is added to limit the set of labels that define a match between two elements. Group modifiers (GROUP_LEFT/GROUP_RIGHT) to request many-to-one matching are added.	10 years ago
Julius Volz	0ac931aed1	Also support parsing float formats like "2.".	10 years ago
Julius Volz	c2ab54e9a6	Support scientific notation and special float values. This adds support for scientific notation in the expression language, as well as for all possible literal forms of +Inf/-Inf/NaN. TODO: Keep enough state in the parser/lexer to distinguish contexts in which "Inf", "NaN", etc. should be parsed as a number vs. parsed as a label name. Currently, foo{nan="bar"} would be a syntax error. However, that is an existing bug for all our reserved words. E.g. foo{sum="bar"} is a syntax error as well. This should be fixed separately.	10 years ago
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	10 years ago
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.	10 years ago
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	11 years ago
Bjoern Rabenstein	0a65b691cc	Disallow ":" in identifiers, but still allow it in metric names. Change-Id: Iace925ab1b71a360bd63357e87f68e727f7afbcb	11 years ago
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	11 years ago
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.	11 years ago
Julius Volz	64b0ade171	Swap rules lexer for much faster one. This swaps github.com/kivikakk/golex for github.com/cznic/golex. The old lexer would have taken 3.5 years to load a set of 5000 test rules (quadratic time complexity for input length), whereas this one takes only 32ms. Furthermore, since the new lexer is embedded differently, this gets rid of the global parser variables and makes the rule loader fully reentrant without a lock.	12 years ago
Matt T. Proud	30b1cf80b5	WIP - Snapshot of Moving to Client Model.	12 years ago
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.	12 years ago
Julius Volz	c0601abf46	Implement initial no-op alert parsing and rule parsing tests.	12 years ago
Julius Volz	000f6a2e23	Allow lower-case BY operator.	12 years ago
Julius Volz	1bc83e1b65	Also allow lower-cased aggregation ops.	12 years ago
Julius Volz	e31591e6fe	Allow single-letter identifiers (metric and label names).	12 years ago
Julius Volz	c3d31febd6	Move durationToString to common place and cleanup error handling.	12 years ago
Julius Volz	06ace4941d	Remove/replace last references to github.com/matttproud/...	12 years ago
Julius Volz	16d9dcd6a8	Add copyright notices to all remaining files.	12 years ago
Julius Volz	a85204a0a4	Add support for matrix duration strings without quotes.	12 years ago
Julius Volz	56384bf42a	Add initial config and rule language implementation.	12 years ago

22 Commits (f81cbb00c623a14ae750e1ee0751f0ba2cf2e4e6)