Fix/double call

[Set3007]

Description

close #65

These changes are intended to create a custom registry to avoid double requests to the Sentry API made using prometheus_client.REGISTRY.

Checklist

• All tests are passing
• New tests were created to address changes in pr (and tests are passing)
• Updated README and/or documentation, if necessary

Summary by CodeRabbit

• New Features
  • Enhanced metric management by introducing a localized registry for better control over metric collectors.
• Bug Fixes
  • Improved handling of collector registration to prevent conflicts and duplication.
• Chores
  • Removed the clean_registry function to streamline the metric unregistration process.

[italux]

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Actions performed

Full review triggered.

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Walkthrough

The changes involve modifications to the metric collection and registration logic using the Prometheus client. A new global variable for localized registry management is introduced, and the existing clean_registry function is removed. The updates ensure that only the current collector is registered, preventing potential conflicts or duplication in metrics collection.

Changes

File	Change Summary
exporter.py	Updated metric collection and registration logic with Prometheus client; introduced registry and current_collector.
helpers/prometheus.py	Removed the clean_registry function responsible for unregistering default collectors from the Prometheus registry.

Assessment against linked issues

Objective	Addressed	Explanation
Avoid duplicate requests to the Sentry API in SentryCollector (65)	❓	The changes modify registration logic but do not confirm resolution of the duplicate request issue.
Improve execution time by reducing unnecessary API calls (65)	❌	The changes do not address the root cause of the duplicate calls to the Sentry API.

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Actionable comments posted: 0

Outside diff range and nitpick comments (1)

exporter.py (1)

14-14: Reminder to address the TODO comment.

The TODO comment about moving settings to use Flask Configuration Handling is a valuable suggestion for improving the maintainability and scalability of the application. It is recommended to prioritize this task to enhance the configuration management of the application, which could further improve the overall code quality and ease of changes in the future.

Would you like assistance in implementing this configuration handling? I can help draft the necessary changes or open a GitHub issue to track this task.

Review details

Configuration used: CodeRabbit UI
Review profile: CHILL

Commits

Files that changed from the base of the PR and between 24bb288 and 53173d8.

Files selected for processing (2)

• exporter.py (3 hunks)
• helpers/prometheus.py (0 hunks)

Files not reviewed due to no reviewable changes (1)

• helpers/prometheus.py

Additional comments not posted (2)

exporter.py (2)

10-10: Approved changes with a suggestion for documentation.

The introduction of CollectorRegistry and the new variables registry and current_collector are well-implemented to address the issue of duplicate API calls. This change ensures that metric collectors are managed more effectively, preventing potential conflicts or duplication.

It's recommended to update the README or documentation to reflect these changes, especially explaining the new registry handling and its benefits to future maintainers or users of the code.

Also applies to: 38-39

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101-110: Approved changes with a suggestion for additional testing.

The modifications in the sentry_exporter function to manage the lifecycle of SentryCollector are well-implemented. The logic to unregister the previous collector before registering a new one ensures that metrics collection is accurate and free from duplicates.

However, considering that new tests have not been created for these changes, it is highly recommended to add test cases that verify the correct registration and unregistration of collectors. This will help ensure the robustness of the changes and prevent future regressions.