Expand guest agent system monitoring

agent_test.go

@@ -55,3 +55,16 @@ func TestAgentReportAuthenticationAndOfflineState(t *testing.T) {
 		t.Fatal("stale agent is online")
 	}
 }
+
+func TestAgentProblemsBecomeMaintenanceAwareAlerts(t *testing.T) {
+	metrics := dashboardMetrics{Agents: []ManagedAgent{{ID: "node", Name: "app", VMID: 105, Online: true, Report: AgentReport{
+		Services:   []AgentService{{Name: "postgres.service", State: "failed", SubState: "failed"}},
+		Containers: []AgentContainer{{ID: "dead", Name: "web", State: "exited", Status: "Exited (1)"}}, DockerAvailable: true,
+	}}}}
+	alerts := evaluateAlerts(metrics, defaultThresholds())
+	window := MaintenanceWindow{Active: true, VMIDs: []int{105}}
+	active, planned := splitMaintenanceAlerts(alerts, window)
+	if len(planned) != 2 || len(active) != 0 {
+		t.Fatalf("active=%d planned=%d alerts=%#v", len(active), len(planned), alerts)
+	}
+}