refactor: O11Y-630 - Sampling and conditional logic for LOGS moved from exporters to processors

[agrognetti]

Summary

To avoid buffering logs that should be discarded due to the sampling config, the stop sampling logs in the exporter to do it in the processors.
"Conditional logic" refers to the logic that was inside the ConditionLogRecordExporter (Used to allow different filtering rules for crashes vs normal logs)

How did you test this change?

Unit tests

Are there any deployment considerations?

No

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Note

Replaces exporter-based log sampling and crash/normal filtering with processor-based equivalents and updates the log pipeline and tests accordingly.

• Logs pipeline:
  • Introduces ConditionalLogRecordProcessor to filter crash (io.opentelemetry.crash) vs normal logs.
  • Introduces SamplingLogProcessor to apply sampling before downstream processing.
  • Removes exporter wrappers ConditionalLogRecordExporter and SamplingLogExporter.
  • Updates InstrumentationManager.createLoggerProcessor to chain SamplingLogProcessor → ConditionalLogRecordProcessor → RoutingLogRecordProcessor, and simplifies createLogExporter to only build a composite in debug mode.
• Tests:
  • Adds unit tests for ConditionalLogRecordProcessor and SamplingLogProcessor.
  • Removes tests for deleted exporter classes.

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