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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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coderd/workspaces.go
+2 -2
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@@ -2033,7 +2033,7 @@ func (api *API) watchWorkspaceSSE(rw http.ResponseWriter, r *http.Request) {
// @Success 200 {object} codersdk.ServerSentEvent
// @Router /api/v2/workspaces/{workspace}/watch-ws [get]
func (api *API) watchWorkspaceWS(rw http.ResponseWriter, r *http.Request) {
api.watchWorkspace(rw, r, httpapi.OneWayWebSocketEventSender(api.Logger))
api.watchWorkspace(rw, r, httpapi.OneWayWebSocketEventSender(api.Logger, api.wsWatcher))
}
func (api *API) watchWorkspace(
@@ -2230,7 +2230,7 @@ func (api *API) watchAllWorkspaceBuilds(rw http.ResponseWriter, r *http.Request)
_ = conn.CloseRead(context.Background())
ctx, cancel := context.WithCancel(ctx)
go httpapi.HeartbeatClose(ctx, api.Logger, cancel, conn)
ctx = api.wsWatcher.Watch(ctx, api.Logger, conn)
defer cancel()
enc := wsjson.NewEncoder[codersdk.WorkspaceBuildUpdate](conn, websocket.MessageText)