liveness probe based on metrics

[halamix2]

Description

Changes proposed in this pull request:

• Check readiness based on metrics
  • if the reconciliation queue is empty then check liveness the old way, by issuing a request
  • if the queue is not empty check if the number of processed event is higher than in the previous liveness check

Related issue(s)

• Health check can stuck when reconciliation queue is full #2146
• increase liveness probe time to restart #2149

[hyperspace-pr-bot]

Summary

The following content is AI-generated and provides a summary of the pull request:

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Improve Health Check with Metrics Monitoring

New Features

✨ Enhanced the health checker to include metrics monitoring as a primary health indicator, with the existing event-based check serving as a fallback mechanism.

Changes

• health.go:
  • Added metrics registry gathering to check controller activity
  • Implemented metric collection logging for debugging
  • Improved health check flow to prioritize metrics over event-based checks
  • Fixed typo in log message ("send" → "sent")
  • Reorganized imports for better code structure
  • Added clarifying comments about fallback behavior to prevent false negatives when event queue is full

GitHub Issues

• #123: Fix orphan check
• #33: Prepare customer-facing documentation for Serverless Manager
• #43: Test the serverless module with the latest Kubernetes API supported by gardener

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• 🔄 Regenerate and Update Summary
• ✏️ Insert as PR Description (deletes this comment)
• 🗑️ Delete comment

PR Bot Information

Version: 1.16.33

• Summary Prompt: Default Prompt
• LLM: anthropic--claude-4.5-sonnet
• Correlation ID: 39fa6a80-dc12-11f0-8669-e1454c4dbfed
• Event Trigger: pull_request.opened
• GithubContextProvider: Fix orphan check #123
• GithubContextProvider: Prepare customer-facing documentation for Serverless Manager #33
• GithubContextProvider: Test the serverless module with the latest Kubernetes API supported by gardener #43
• Output Template: Default Template

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