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feat: add coderd_api_websocket_probes_total metric (#25012)

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Relates to CODAGT-115

Adds metric `coderd_api_websocket_probes_total`. Every successful
heartbeat for a given path will increment the metric.

Comparing this with `coderd_api_concurrent_websockets` will give an
indication of how many websocket connections are open but in a 'wedged'
state (when heartbeats stopped versus when we closed the connection).
This commit is contained in:
Cian Johnston
2026-06-03 10:46:07 +01:00
committed by GitHub
parent 7703e7a26e
commit 8b058dc949
22 changed files with 596 additions and 171 deletions
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docs/admin/integrations/prometheus.md
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@@ -200,6 +200,7 @@ deployment. They will always be available from the agent.
| `coderd_api_requests_processed_total` | counter | The total number of processed API requests | `code` `method` `path` |
| `coderd_api_total_user_count` | gauge | The total number of registered users, partitioned by status. | `status` |
| `coderd_api_websocket_durations_seconds` | histogram | Websocket duration distribution of requests in seconds. | `path` |
| `coderd_api_websocket_probes_total` | counter | WebSocket liveness probe outcomes by route. Compare rate(...{result="ok"}[1m]) against coderd_api_concurrent_websockets to detect unresponsive WebSocket connections. | `path` `result` |
| `coderd_api_workspace_latest_build` | gauge | The current number of workspace builds by status for all non-deleted workspaces. | `status` |
| `coderd_authz_authorize_duration_seconds` | histogram | Duration of the 'Authorize' call in seconds. Only counts calls that succeed. | `allowed` |
| `coderd_authz_prepare_authorize_duration_seconds` | histogram | Duration of the 'PrepareAuthorize' call in seconds. | |