feat: implement histogram and gauge histogram support for OpenMetrics 2.0 - #964

Merged

dashpole merged 15 commits into

prometheus:mainfrom

dashpole:om2_histograms

Sep 2, 2026

Commits on Aug 26, 2026

feat: implement histogram and gauge histogram support for OpenMetrics 2.0
dashpole
committed
6f61ff0
expfmt: preserve uint64 precision for implicit +Inf bucket in OM 2.0
dashpole
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683bb96
expfmt: add test for counter exemplar with empty label set in OM 2.0
dashpole
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9da2028
Update expfmt/openmetrics_2_0_create.go

dashpole
and
bwplotka
committed
65e8ba0
Fix failing unit tests
dashpole
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557f3cf
expfmt: validate SampleCountFloat before switch in OM 2.0 histogram encoding
dashpole
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c15aec3
expfmt: validate ZeroCountFloat before switch in OM 2.0 native histogram encoding
dashpole
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68e5679
expfmt: validate histogram metrics before writing in OM 2.0 encoder
dashpole
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ccbc5ac
expfmt: validate classic bucket count monotonicity in OM 2.0 histogram encoding
dashpole
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d422ef2
expfmt: fix pre-epoch timestamp serialization in OM 2.0 encoder
dashpole
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6337235
expfmt: fix float +Inf bucket precision check for large uint64 counts in OM 2.0
dashpole
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99c2831
expfmt: avoid string concatenation allocations in OM 2.0 writeSpansAndBuckets
dashpole
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095f8dd
expfmt: address unused parameters and formatting lints
dashpole
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18756bb

Commits on Aug 31, 2026

Merge branch 'main' into om2_histograms
dashpole
authored
16e43c2

Commits on Sep 1, 2026

Merge branch 'main' into om2_histograms
dashpole
authored
cee9c3b