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[SDK] Fix Observable Counters/UpDownCounters #2298

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merged 5 commits into from
Sep 18, 2023

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@lalitb lalitb commented Sep 6, 2023

Fixes #2296

Changes

The default aggregation type was not handled properly for Observable Counter/UpDownCounter, and the issue was surfaced/evident out with non-zero initial measurement value. Have fixed the issue. Also we were missing the test for Observable UpDownCounter. Have added the test to catch this error.

For significant contributions please make sure you have completed the following items:

  • CHANGELOG.md updated for non-trivial changes
  • Unit tests have been added
  • Changes in public API reviewed

@lalitb lalitb requested a review from a team September 6, 2023 23:52
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codecov bot commented Sep 7, 2023

Codecov Report

Merging #2298 (19346ad) into main (049f7e8) will decrease coverage by 0.06%.
The diff coverage is 76.00%.

Impacted file tree graph

@@            Coverage Diff             @@
##             main    #2298      +/-   ##
==========================================
- Coverage   87.52%   87.45%   -0.06%     
==========================================
  Files         199      199              
  Lines        5981     5996      +15     
==========================================
+ Hits         5234     5243       +9     
- Misses        747      753       +6     
Files Changed Coverage
...etry/sdk/metrics/aggregation/default_aggregation.h 76.00%

@@ -159,7 +160,29 @@ class DefaultAggregation
new DoubleSumAggregation(nostd::get<SumPointData>(point_data)));
}
default:
return DefaultAggregation::CreateAggregation(instrument_descriptor, nullptr);
return nullptr; // won't reach here
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Add an assert here?

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Thanks, will look into this separately. Not a big fan of adding assert in telemetry sdk. But returning nullptr (even for unreachable code) is also not nice thing. Probaby we can return DropAggregation just to be cautious. Will create a issue to track this.

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Starting review, just a question for now.

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LGTM, thanks for the fix.

@lalitb lalitb merged commit 0563a71 into open-telemetry:main Sep 18, 2023
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@marcalff marcalff changed the title Fix Observable Counters/UpDownCounters [SDK] Fix Observable Counters/UpDownCounters Oct 11, 2023
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Successfully merging this pull request may close these issues.

Observable Counters/UpDownCounters Report Incorrect Values
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