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feat(go): expose gateway connection close metrics

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lingniu
2026-07-03 19:28:06 +08:00
parent d08bf17111
commit 06866b0fa7
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docs/ops/go-service-observability.md
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@@ -34,6 +34,8 @@ curl -fsS http://127.0.0.1:20200/readyz
| Metric | Meaning |
| --- | --- |
| `vehicle_gateway_active_connections` | Current TCP connections by protocol. Labels: `protocol`. |
| `vehicle_gateway_connection_closes_total` | TCP connection closes by protocol and reason. Labels: `protocol`, `reason`. Reasons include `eof`, `read_timeout`, `read_error`, `extract_error`, `context_cancelled`, `max_connections`. |
| `vehicle_gateway_connection_rejections_total` | TCP connection rejections by protocol and reason. Labels: `protocol`, `reason`. |
| `vehicle_gateway_frames_total` | Protocol frames received and parsed by the gateway. Labels: `protocol`, `status`. |
| `vehicle_gateway_frame_duration_ms` | Last observed Gateway frame handling duration and histogram buckets for p95/p99. Labels: `protocol`, `status`. |
| `vehicle_gateway_publish_total` | Gateway publish result for raw events. Unified appears only when the compatibility stream is explicitly enabled. Labels: `protocol`, `kind`, `status`. |