Replace direct error equality checks (err == pgx.ErrNoRows, err != http.ErrServerClosed)
with the idiomatic errors.Is() function throughout handlers, services, middleware, and app
startup. This correctly handles wrapped error chains.
Also replace a raw type assertion (*HTTPError) with errors.AsType[*HTTPError]() in the
error handler middleware for consistency.
Additionally, rename shadowed variables for clarity:
- sidecar.go: config -> sidecarConfig, systemConfig (shadowed package-level vars)
- media_scanner.go: uuid -> uuidString (shadowed the uuid package import)
- Remove createTestMediaItem helper function and replace with createTestMediaItemID
- Update TestWebSocketProgressBroadcast to use simplified helper
- Add read deadline and initial message read in TestWebSocketUserScopedBroadcast to properly consume initial connection messages
- This reduces code duplication and improves test reliability by properly handling WebSocket connection setup
- Add http.Server field to App struct for explicit server management
- Add StartServer() method to create and start HTTP server
- Replace echo.Close() with http.Server.Shutdown() in Shutdown()
- Update import from echo/v4 to echo/v5
Changes:
- New() initializes server field as nil
- StartServer() creates http.Server with Echo as handler
- Shutdown() uses http.Server.Shutdown() with context timeout
- Removed deprecated echo.Close() call (v5 API change)
This provides better control over server lifecycle and graceful shutdown.
- Delete scheduler.go and scheduler_test.go (no longer needed)
- Simplify App struct by removing Handler interface dependency
- Remove StartScheduler/StopScheduler from app lifecycle
- Update main.go to not pass handler to app constructor
- Remove scheduler mock from app tests, simplify test coverage
Phase 5: Application Lifecycle Management
Creates internal/app package for proper lifecycle management, signal
handling, and graceful shutdown of all services.
Changes:
- Create internal/app/app.go with App lifecycle manager
- Handles SIGINT, SIGTERM, SIGQUIT signals
- Graceful shutdown with 30-second timeout
- Manages HTTP server shutdown
- Manages scheduler start/stop
- Update cmd/server/main.go to use app lifecycle manager
- Replace defer-based cleanup with proper signal handling
- Server starts in background goroutine
- Blocks on app.Start() until shutdown signal
- Clean shutdown of all services
Benefits:
- Proper signal handling (Ctrl+C, kill, docker stop)
- Graceful shutdown prevents data corruption
- No more os.Exit(1) bypassing defer cleanup
- All services stopped in correct order
- Server stops accepting new connections first
- Then scheduler and background services stopped
Technical details:
- Uses sync.Mutex for shutdown safety
- Context with timeout for shutdown operations
- Channel-based coordination for shutdown completion
- Logs all lifecycle events for debugging
Fixes issue where e.Logger.Fatal() would call os.Exit(1)
immediately, skipping defer cleanup and causing unclean shutdown.
john-okeefe