feat: sample workflow phase latency

internal/storage/mysql/operational_metrics_integration_test.go

@@ -90,6 +90,12 @@ func TestIntegrationOperationalSnapshot(t *testing.T) {
 		}
 	}
 	f.exec("UPDATE pulse_tasks SET state='SUCCEEDED', completed_at=UTC_TIMESTAMP(6), updated_at=UTC_TIMESTAMP(6), revision=revision+1 WHERE namespace_id=? AND id=?", f.resources.NamespaceID, task.ID)
+	for _, event := range []struct {
+		revision uint64
+		typeName string
+	}{{2, "task.started"}, {3, "task.succeeded"}} {
+		f.exec("INSERT INTO orbit_events(namespace_id,id,aggregate_kind,aggregate_id,aggregate_revision,type,payload,occurred_at) VALUES (?,?,'task',?,?,?,'{}',UTC_TIMESTAMP(6))", f.resources.NamespaceID, executionID(t), task.ID, event.revision, event.typeName)
+	}
 	completed, err := ReadOperationalSnapshot(ctx, db)
 	if err != nil {
 		t.Fatal(err)
@@ -97,6 +103,9 @@ func TestIntegrationOperationalSnapshot(t *testing.T) {
 	if completed.TaskTerminalLatencySeconds < 0 || completed.TaskTerminalLatencyMaxSeconds < 0 {
 		t.Fatalf("negative terminal latency: %#v", completed)
 	}
+	if completed.TaskAcceptToStartLatencySeconds < 0 || completed.TaskAcceptToTerminalLatencySeconds < 0 {
+		t.Fatalf("negative task phase latency: %#v", completed)
+	}
 
 	cancelled, cancelNow := context.WithCancel(ctx)
 	cancelNow()