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Add exemplar support to the prometheus exporter #5111

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merged 5 commits into from
Apr 4, 2024

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@dashpole dashpole commented Mar 27, 2024

Fixes #3163

Temporarily blocked on prometheus/client_golang#1479.

The unit tests check for the exemplar in the protobuf output of the prometheus gatherer, rather than the final text format because exemplars are not supported in the prometheus text format (only openmetrics text format, or protobuf).

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codecov bot commented Mar 27, 2024

Codecov Report

Attention: Patch coverage is 87.50000% with 3 lines in your changes are missing coverage. Please review.

Project coverage is 83.7%. Comparing base (e6e4e4a) to head (536a302).

Additional details and impacted files

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@@          Coverage Diff          @@
##            main   #5111   +/-   ##
=====================================
  Coverage   83.7%   83.7%           
=====================================
  Files        252     252           
  Lines      16426   16450   +24     
=====================================
+ Hits       13751   13772   +21     
- Misses      2386    2388    +2     
- Partials     289     290    +1     
Files Coverage Δ
exporters/prometheus/exporter.go 83.3% <87.5%> (+0.3%) ⬆️

@dashpole dashpole added enhancement New feature or request pkg:exporter:prometheus Related to the Prometheus exporter package labels Mar 27, 2024
@dashpole dashpole force-pushed the prometheus_exemplars branch 2 times, most recently from 3c4924f to 7d75f00 Compare March 27, 2024 20:10
@dashpole dashpole marked this pull request as ready for review March 27, 2024 20:13
@dashpole dashpole force-pushed the prometheus_exemplars branch from 7d75f00 to 912cbcd Compare March 27, 2024 20:15
exporters/prometheus/exporter_test.go Outdated Show resolved Hide resolved
exporters/prometheus/exporter.go Show resolved Hide resolved
@dashpole dashpole force-pushed the prometheus_exemplars branch from a8f673e to 525c53d Compare April 3, 2024 01:19
@pellared pellared requested a review from dmathieu April 3, 2024 17:03
@MrAlias MrAlias added this to the v1.25.0 milestone Apr 4, 2024
@pellared pellared merged commit 0168437 into open-telemetry:main Apr 4, 2024
25 of 26 checks passed
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enhancement New feature or request pkg:exporter:prometheus Related to the Prometheus exporter package
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Support exemplars in Prometheus exporter
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