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[loop-generated] [infrastructure] Implement graceful shutdown and health checks #1397

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opened 2026-03-24 12:15:27 +00:00 by Timmy · 2 comments
Timmy commented 2026-03-24 12:15:27 +00:00
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Problem

The application needs better lifecycle management for production deployments, including graceful shutdown and comprehensive health monitoring.

Proposed Solution

  1. Implement graceful shutdown handlers for all services
  2. Add comprehensive health check endpoints
  3. Implement readiness and liveness probes
  4. Add proper signal handling for container environments

Acceptance Criteria

  • Graceful shutdown implemented for all services
  • Health check endpoints respond with proper status codes
  • Readiness probe indicates when service is ready for traffic
  • Liveness probe detects when service needs restart
  • Signal handling works in container environments
## Problem The application needs better lifecycle management for production deployments, including graceful shutdown and comprehensive health monitoring. ## Proposed Solution 1. Implement graceful shutdown handlers for all services 2. Add comprehensive health check endpoints 3. Implement readiness and liveness probes 4. Add proper signal handling for container environments ## Acceptance Criteria - [ ] Graceful shutdown implemented for all services - [ ] Health check endpoints respond with proper status codes - [ ] Readiness probe indicates when service is ready for traffic - [ ] Liveness probe detects when service needs restart - [ ] Signal handling works in container environments
Timmy commented 2026-03-24 12:16:06 +00:00
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Implementation Instructions for Kimi

Scope

Add production-ready lifecycle management with graceful shutdown and comprehensive health monitoring.

Step-by-step Implementation Plan

  1. Health Check Endpoints

    • Create /health endpoint returning basic status (200/503)
    • Create /health/detailed with service status, DB connectivity
    • Add /ready endpoint for readiness probe
    • Add /live endpoint for liveness probe

  2. Graceful Shutdown Implementation

    • Add signal handlers (SIGTERM, SIGINT) to Flask app
    • Implement connection draining for active requests
    • Add timeout for forceful shutdown if graceful fails
    • Ensure database connections close properly

  3. Service Status Monitoring

    • Check database connectivity in health endpoints
    • Monitor memory usage and report in detailed health
    • Add basic performance metrics (request count, avg response time)

Files to Modify

  • src/dashboard/app.py (add shutdown handlers)
  • Create: src/dashboard/routes/health.py
  • Create: src/infrastructure/health.py (health check logic)
  • src/config.py (health check settings)

Testing Requirements

  • Add tests for health endpoints
  • Test graceful shutdown behavior
  • Verify health status accuracy
  • Ensure proper HTTP status codes

Verification Commands

tox -e unit  # All tests must pass
curl http://localhost:5000/health  # Should return 200 + status

This is critical for production deployments - implement robust health monitoring.

## Implementation Instructions for Kimi ### Scope Add production-ready lifecycle management with graceful shutdown and comprehensive health monitoring. ### Step-by-step Implementation Plan 1. **Health Check Endpoints** - Create `/health` endpoint returning basic status (200/503) - Create `/health/detailed` with service status, DB connectivity - Add `/ready` endpoint for readiness probe - Add `/live` endpoint for liveness probe 2. **Graceful Shutdown Implementation** - Add signal handlers (SIGTERM, SIGINT) to Flask app - Implement connection draining for active requests - Add timeout for forceful shutdown if graceful fails - Ensure database connections close properly 3. **Service Status Monitoring** - Check database connectivity in health endpoints - Monitor memory usage and report in detailed health - Add basic performance metrics (request count, avg response time) ### Files to Modify - `src/dashboard/app.py` (add shutdown handlers) - Create: `src/dashboard/routes/health.py` - Create: `src/infrastructure/health.py` (health check logic) - `src/config.py` (health check settings) ### Testing Requirements - Add tests for health endpoints - Test graceful shutdown behavior - Verify health status accuracy - Ensure proper HTTP status codes ### Verification Commands ```bash tox -e unit # All tests must pass curl http://localhost:5000/health # Should return 200 + status ``` This is critical for production deployments - implement robust health monitoring.
kimi was assigned by Timmy 2026-03-24 12:16:06 +00:00
kimi commented 2026-03-24 19:30:57 +00:00
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PR #1457 created implementing graceful shutdown and health checks.

Implementation Summary

New Health Endpoints

  • /health/detailed - Comprehensive health with service statuses (200/503)
  • /ready - Readiness probe for K8s/Docker
  • /live - Liveness probe with shutdown awareness
  • /health/shutdown - Debug endpoint for shutdown status

Graceful Shutdown

  • SIGTERM/SIGINT handlers in lifespan manager
  • Thread-safe shutdown state tracking
  • Health probes return 503 during shutdown
  • Proper cleanup of background tasks

Test Results

  • All 966 unit tests pass
  • Added comprehensive tests for new endpoints
  • Signal handlers gracefully degrade in test environment

See PR #1457 for full details.

PR #1457 created implementing graceful shutdown and health checks. ## Implementation Summary ### New Health Endpoints - `/health/detailed` - Comprehensive health with service statuses (200/503) - `/ready` - Readiness probe for K8s/Docker - `/live` - Liveness probe with shutdown awareness - `/health/shutdown` - Debug endpoint for shutdown status ### Graceful Shutdown - SIGTERM/SIGINT handlers in lifespan manager - Thread-safe shutdown state tracking - Health probes return 503 during shutdown - Proper cleanup of background tasks ### Test Results - All 966 unit tests pass - Added comprehensive tests for new endpoints - Signal handlers gracefully degrade in test environment See PR #1457 for full details.
kimi closed this issue 2026-03-24 19:31:15 +00:00
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Reference: Rockachopa/Timmy-time-dashboard#1397
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