2 Commits

Author	SHA1	Message	Date
ZhenYi	962bf0312d	feat(observability): Phase 6 OTLP tracing + Prometheus metrics endpoint ... OTLP tracing: - libs/observability/otlp.rs: SdkTracerProvider via HTTP/proto OTLP exporter - libs/observability/tracing_middleware.rs: Actix-web span with trace_id propagation - libs/observability/tracing_fmt.rs: JSON fmt + registry.try_init for layered init - libs/rpc: gRPC method spans via info_span - libs/agent, libs/room, libs/service, libs/api: structured tracing throughout Prometheus metrics: - libs/observability/prometheus_exporter.rs: /metrics HTTP handler + metrics crate - libs/observability/metrics_middleware.rs: HttpMetrics middleware + AtomicU64 - libs/observability/redis_metrics.rs: Redis counter poller via RedisMetrics - libs/room/metrics.rs: RoomMetrics (connections, messages, presence counters) Config env vars: APP_OTEL_ENABLED, APP_OTEL_ENDPOINT, APP_OTEL_SERVICE_NAME	2026-04-22 10:27:54 +08:00
ZhenYi	fbd228f17e	feat(adminrpc): new standalone binary for admin gRPC service ... Separate binary for Kubernetes internal admin RPC communication (SessionAdmin service on port 9090). Includes: - Redis cluster pool via session_manager - OTLP tracing with env-driven configuration - Tracing subscriber init (JSON to stderr) - Graceful startup with connection verification	2026-04-21 23:06:11 +08:00