[rooks-ns]

Fixes #9014

Problem

In declarative configuration, $defs.IncludeExclude allows an empty object (resource_constant_labels: {}). When parsed, PrometheusComponentProvider unconditionally forwarded (null, null) to IncludeExcludePredicate.createPatternMatching(null, null). Because IncludeExcludePredicate defaults (null, null) to s -> true (match all), this erroneously promoted every resource attribute onto all Prometheus metric time-series instead of none.

Solution

Only register allowedResourceAttributesFilter on the builder when included != null || excluded != null. If both are absent, the builder retains allowedResourceAttributesFilter = null (no-op), ensuring zero resource attributes are converted to metric labels.

Testing

• Added PrometheusComponentProviderTest covering default behavior, empty {} config, whitelist, blacklist, and validation errors.
• Added test case to MetricReaderFactoryTest verifying declarative config model parity with empty IncludeExcludeModel.
• Verified via ./gradlew :exporters:prometheus:check :sdk-extensions:declarative-config:check.

[opentelemetry-pr-dashboard]

Pull request dashboard status

Waiting on the author · refreshed 2026-11-07 05:29 UTC

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.37%. Comparing base (d97e4af) to head (245467d).
⚠️ Report is 24 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #9015      +/-   ##
============================================
+ Coverage     90.35%   90.37%   +0.01%     
- Complexity    10984    11025      +41     
============================================
  Files          1019     1021       +2     
  Lines         30072    30129      +57     
  Branches       3927     3934       +7     
============================================
+ Hits          27173    27229      +56     
- Misses         1939     1942       +3     
+ Partials        960      958       -2     

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