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feat: add telemetry for task lifecycle events (#21922)

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Relates to https://github.com/coder/internal/issues/1259

Adds new database queries and telemetry collection functions to gather
task lifecycle events (pause/resume cycles, idle time) for analytics.
    
Task events track pause/resume activity, idle duration before pausing,
paused duration, and time from resume to first app status, filtered to
recent activity based on the telemetry snapshot interval.

🤖 Created with Mux (Opus 4.6).
This commit is contained in:
Cian Johnston
2026-02-24 17:04:42 +00:00
committed by GitHub
parent 974ca3eda6
commit 6336fee3a7
11 changed files with 1158 additions and 26 deletions
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coderd/database/querier.go
+17
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@@ -361,6 +361,23 @@ type sqlcQuerier interface {
GetTaskSnapshot(ctx context.Context, taskID uuid.UUID) (TaskSnapshot, error)
GetTelemetryItem(ctx context.Context, key string) (TelemetryItem, error)
GetTelemetryItems(ctx context.Context) ([]TelemetryItem, error)
// Returns all data needed to build task lifecycle events for telemetry
// in a single round-trip. For each task whose workspace is in the
// given set, fetches:
// - the latest workspace app binding (task_workspace_apps)
// - the most recent stop and start builds (workspace_builds)
// - the last "working" app status (workspace_app_statuses)
// - the first app status after resume, for active workspaces
//
// Assumptions:
// - 1:1 relationship between tasks and workspaces. All builds on the
// workspace are considered task-related.
// - Idle duration approximation: If the agent reports "working", does
// work, then reports "done", we miss that working time.
// - lws and active_dur join across all historical app IDs for the task,
// because each resume cycle provisions a new app ID. This ensures
// pre-pause statuses contribute to idle duration and active duration.
GetTelemetryTaskEvents(ctx context.Context, arg GetTelemetryTaskEventsParams) ([]GetTelemetryTaskEventsRow, error)
// GetTemplateAppInsights returns the aggregate usage of each app in a given
// timeframe. The result can be filtered on template_ids, meaning only user data
// from workspaces based on those templates will be included.