[dynamic control] Add trace sampling validation#2604
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trask merged 2 commits intoopen-telemetry:mainfrom Feb 9, 2026
Merged
[dynamic control] Add trace sampling validation#2604trask merged 2 commits intoopen-telemetry:mainfrom
trask merged 2 commits intoopen-telemetry:mainfrom
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Pull request overview
This PR adds initial support for trace sampling validation in the dynamic-control module, implementing validation for trace sampling policies according to OpenTelemetry specification pull request #4738.
Changes:
- Introduces a
PolicyValidatorinterface for validating telemetry policy configurations - Implements
TraceSamplingValidatorto validate trace sampling policies with probability values between 0.0 and 1.0 - Supports both full JSON format and a simplified "trace-sampling.probability" alias for configuration
Reviewed changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated 3 comments.
| File | Description |
|---|---|
| PolicyValidator.java | Defines the interface for policy validators with JSON and alias validation methods |
| TraceSamplingValidator.java | Implements trace sampling validation with probability range checking |
| } catch (JsonProcessingException e) { | ||
| // Not valid JSON for this validator | ||
| } | ||
| logger.info("Invalid trace-sampling JSON: " + json); |
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Logging the full JSON input at INFO level could expose sensitive data. Consider logging only a sanitized message or moving this to DEBUG level with appropriate sanitization.
| } catch (NumberFormatException e) { | ||
| // invalid | ||
| } | ||
| logger.info("Ignoring invalid trace-sampling.probability value: " + value); |
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Logging the raw input value could expose sensitive data. Consider logging a generic message instead or sanitizing the value before logging.
dynamic-control/src/main/java/io/opentelemetry/contrib/dynamic/policy/PolicyValidator.java
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…/policy/PolicyValidator.java Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
jackshirazi
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LikeTheSalad
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trask
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Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
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Initial implementation of trace sampling validation per #2546.
A full working implementation of the open-telemetry/opentelemetry-specification#4738 is here in this branch