v0.2.1

What's new

• core.AddWorkerRunOptions(opts ...workers.RunOption) — init-time hook to configure run-level worker options (metrics, default jitter, run-level interceptors).
• Default Prometheus worker metrics — core.Run() now wires workers.NewPrometheusMetrics(APP_NAME) automatically when APP_NAME is set and Prometheus isn't disabled. Worker lifecycle metrics (worker_started_total, worker_panicked_total, worker_active_count, worker_run_duration_seconds, etc.) now show up on /metrics for any service using CBWorkerProvider without per-worker setup.
• A user-supplied workers.WithMetrics(...) via AddWorkerRunOptions overrides the default.

Bug fixed

Prior to this release, core.Run() invoked workers.Run with no RunOptions, so the workers package fell back to BaseMetrics{} (no-op) and every worker lifecycle metric silently stayed at zero in any service that adopted CBWorkerProvider (#87).

Compatibility

Additive only — no breaking changes. Services that don't set APP_NAME or that disable Prometheus continue to behave as before.

v0.2.0

Workers integration + lifecycle hooks

Add 5 optional interfaces for service lifecycle management, following the existing CBStopper/CBGracefulStopper pattern:

• CBWorkerProvider — run background workers managed by go-coldbrew/workers
• CBPreStarter — setup before servers start (DB connections, auth interceptors)
• CBPostStarter — act after server goroutines launch (service discovery)
• CBPreStopper — act before graceful shutdown (deregister, flush)
• CBPostStopper — final cleanup after everything stops

Lifecycle

PreStart → initGRPC → initHTTP → start workers → start servers → PostStart
→ block → PreStop → FailCheck → drain → stop workers → stop servers → Stop → PostStop

Config

• Added env:"" tags on all Config fields alongside envconfig:"" for modern ecosystem compat
• Added Config.ValidateStrict() []error for programmatic validation

Other

• 100% backward compatible — CB interface unchanged, existing services work without modification
• Bumped go-coldbrew/workers to v0.2.1

v0.1.52

What's Changed

Automatic TLS certificate hot-reloading

ColdBrew now automatically watches TLS cert/key files for changes and reloads them without requiring a service restart. This is powered by cloudflare/certinel using fsnotify for event-driven file watching.

• Zero-downtime certificate rotation for Kubernetes (cert-manager, Vault)
• Works with symlink-based rotation out of the box
• Watcher errors trigger graceful shutdown so the process can be restarted by the orchestrator

Full Changelog: v0.1.51...v0.1.52

v0.1.51

• Switch SetupLogger to slog-native log.SetDefault(log.NewHandler(...))
• Native slog.LogAttrs calls now get ColdBrew context fields automatically
• Respect user-configured handler — SetupLogger skips if log.DefaultIsSet()
• Fix error log field ordering in SetupLogger
• Bump go-coldbrew/log to v0.4.1

v0.1.50

feat: dedicated admin port for endpoint isolation (ADMIN_PORT config)

v0.1.49

Wire rate limiting config (RATE_LIMIT_PER_SECOND, RATE_LIMIT_BURST, DISABLE_RATE_LIMIT), add rate limit validation

v0.1.48

Clarify send/recv msg size comments (response vs request), normalize HTTP header prefix matching

v0.1.47

Config validation improvements (TLS file check, OTLP format, log level, timeout sanity), DebugLogInterceptor wiring, HTTP header forwarding for debug log, goleak, bump Go deps

v0.1.46

feat: keepalive defaults (300s/1800s/30s), default timeout interceptor (60s), Go 1.25.9, bump interceptors v0.1.22

v0.1.46-dev

feat: native stats/opentelemetry + OTEL metrics + OpenTracing removal

• Migrate gRPC OTel instrumentation from deprecated otelgrpc contrib to native grpc stats/opentelemetry
• Add opt-in OTEL metrics dual-export via ENABLE_OTEL_METRICS alongside Prometheus
• Remove OpenTracing bridge (OTLP_USE_OPENTRACING_BRIDGE now ignored with warning)
• TracerProvider and MeterProvider registered for graceful shutdown
• New public API: SetOTELOptions(), SetupOTELMetrics(), OTELMeterProvider()
• Legacy fallback via OTEL_USE_LEGACY_INSTRUMENTATION=true

Roadmap items: 8.1, 8.3