fix: handle errors from os.Setenv in GCP telemetry and logging

[tolgaOzen]

Summary by CodeRabbit

• Bug Fixes

  • Enhanced error handling for setting environment variables in multiple functions, improving robustness.

• Refactor

  • Updated method signatures for clarity and consistency in parameter formatting.

• Documentation

  • Improved comments for better readability in method parameters.

[coderabbitai]

Caution

Review failed

The pull request is closed.

Walkthrough

The pull request introduces several modifications across multiple files, focusing on enhancing error handling and improving code clarity. In internal/engines/subjectFilter.go, the setChild method's comments were reformatted, and various methods were refined for consistent error handling and response structures. The pkg/cmd/log.go file saw updates to function signatures for clarity and improved error handling in the NewGCPHandler function. Similar enhancements were made in the meterexporters and tracerexporters packages, where error checks were added for setting Google application credentials.

Changes

File Path	Change Summary
internal/engines/subjectFilter.go	Reformatted comments in setChild. Improved error handling and logic in subjectFilter, subjectFilterDirectRelation, subjectFilterUnion, subjectFilterIntersection, and subjectFilterExclusion.
pkg/cmd/log.go	Updated function signatures for HandlerFactory for clarity. Enhanced error handling in NewGCPHandler.
pkg/telemetry/meterexporters/gcp.go	Improved error handling in NewGCP for setting Google application credentials.
pkg/telemetry/tracerexporters/gcp.go	Enhanced error handling in NewGCP for setting Google application credentials.

Possibly related PRs

• fix(subject-filter): handle wildcard and exclusion logic correctly #1695: Focuses on handling wildcard and exclusion logic in the SubjectFilter, directly related to the changes in the main PR.
• refactor: remove unnecessary continuous token handling in subject filter #1708: Refactors the LookupSubject method in the LookupEngine, closely related to the SubjectFilter changes.
• fix: subject filtering pagination #1710: Addresses pagination in subject filtering, aligning with updates to response structures and error management in the main PR.

🐇 In the code we hop and play,
With clearer paths, we pave the way.
Errors caught, wildcards tamed,
In our logs, no fears are named.
So let us cheer, with joy we sing,
For every change, a brighter spring! 🌷

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