Andrew Hall 3bda9a3396

promql: allow timestamp() to be wrapped as a step invariant depending on arguments (#17313) ...

Some timestamp functions can be safely wrapped as a step invariant.
Then once we do that we never need to check or unwrap at evaluation time.

For instance; `timestamp(metric @ 1)` is step invariant, whereas
`timestamp(abs(metric @ 1))` is not.

Currently all `timestamp` `*parser.Call` are excluded from being
considered step invariant since it is listed in the
`AtModifierUnsafeFunctions` map.

This PR adds an extra check for timestamp functions which consider
the arguments, and if the argument is a simple VectorSelector then
the entire `*parser.Call` can be safely wrapped as a step invariant.

Signed-off-by: Andrew Hall <andrew.hall@grafana.com>
Co-authored-by: Bryan Boreham <bjboreham@gmail.com>

2026-03-02 12:01:14 +00:00

..

fuzz-data

textparse: Add fuzzing and fix bug caught

2017-07-07 11:12:17 +02:00

parser

Merge pull request #17904 from linasm/trim_histogram

2026-02-24 17:16:24 +01:00

promqltest

promql: allow timestamp() to be wrapped as a step invariant depending on arguments (#17313)

2026-03-02 12:01:14 +00:00

bench_test.go

enable experimental functions in promql benchmarks

2026-02-12 18:40:14 -05:00

durations_test.go

Refactor parse.go into an instance-based Parser interface

2026-02-11 11:21:49 +01:00

durations.go

Remove copyright date from headers (#17785)

2026-01-05 13:46:21 +01:00

engine_internal_test.go

Refactor parse.go into an instance-based Parser interface

2026-02-11 11:21:49 +01:00

engine_test.go

promql: allow timestamp() to be wrapped as a step invariant depending on arguments (#17313)

2026-03-02 12:01:14 +00:00

engine.go

promql: allow timestamp() to be wrapped as a step invariant depending on arguments (#17313)

2026-03-02 12:01:14 +00:00

functions_internal_test.go

promql: use Kahan summation for Native Histograms (#15687)

2026-02-08 00:52:22 +01:00

functions_test.go

tests(teststorage): Close Storage in the helper (#17902)

2026-01-23 08:41:35 +00:00

functions.go

PromQL: Add experimental histogram_quantiles variadic function (#17285)

2026-02-18 17:32:29 +01:00

fuzz_test.go

Remove copyright date from headers (#17785)

2026-01-05 13:46:21 +01:00

fuzz.go

Refactor parse.go into an instance-based Parser interface

2026-02-11 11:21:49 +01:00

histogram_stats_iterator_test.go

feat(tsdb): new AppenderV2 and AtST interface for chunks

2026-01-14 13:15:09 +01:00

histogram_stats_iterator.go

Remove copyright date from headers (#17785)

2026-01-05 13:46:21 +01:00

info.go

promql: info function: support multiple name matchers (#17968)

2026-02-13 17:22:58 +01:00

promql_test.go

Refactor parse.go into an instance-based Parser interface

2026-02-11 11:21:49 +01:00

quantile_test.go

Use custom annotation for histogram quantile monotonicity info to provide more details (#15578)

2026-02-05 18:35:48 +01:00

quantile.go

Use custom annotation for histogram quantile monotonicity info to provide more details (#15578)

2026-02-05 18:35:48 +01:00

query_logger_test.go

fix(promql): prevent panic in trimStringByBytes on invalid UTF-8

2026-01-24 16:06:42 +01:00

query_logger.go

fix(promql): prevent panic in trimStringByBytes on invalid UTF-8

2026-01-24 16:06:42 +01:00

value_test.go

Remove copyright date from headers (#17785)

2026-01-05 13:46:21 +01:00

value.go

feat(tsdb): new AppenderV2 and AtST interface for chunks

2026-01-14 13:15:09 +01:00