feat: pause internal controllers (#1670)

* feat: pause internal controllers

* improve controller active logic

cmd/hatchet-engine/engine/run.go

@@ -786,57 +786,61 @@ func runV1Config(ctx context.Context, sc *server.ServerConfig) ([]Teardown, erro
 			Fn:   cleanupRetention,
 		})
 
-		tasks, err := task.New(
-			task.WithAlerter(sc.Alerter),
-			task.WithMessageQueue(sc.MessageQueueV1),
-			task.WithRepository(sc.EngineRepository),
-			task.WithV1Repository(sc.V1),
-			task.WithLogger(sc.Logger),
-			task.WithPartition(p),
-			task.WithQueueLoggerConfig(&sc.AdditionalLoggers.Queue),
-			task.WithPgxStatsLoggerConfig(&sc.AdditionalLoggers.PgxStats),
-		)
+		if isControllerActive(sc.PausedControllers, TaskController) {
+			tasks, err := task.New(
+				task.WithAlerter(sc.Alerter),
+				task.WithMessageQueue(sc.MessageQueueV1),
+				task.WithRepository(sc.EngineRepository),
+				task.WithV1Repository(sc.V1),
+				task.WithLogger(sc.Logger),
+				task.WithPartition(p),
+				task.WithQueueLoggerConfig(&sc.AdditionalLoggers.Queue),
+				task.WithPgxStatsLoggerConfig(&sc.AdditionalLoggers.PgxStats),
+			)
 
-		if err != nil {
-			return nil, fmt.Errorf("could not create tasks controller: %w", err)
+			if err != nil {
+				return nil, fmt.Errorf("could not create tasks controller: %w", err)
+			}
+
+			cleanupTasks, err := tasks.Start()
+
+			if err != nil {
+				return nil, fmt.Errorf("could not start tasks controller: %w", err)
+			}
+
+			teardown = append(teardown, Teardown{
+				Name: "tasks controller",
+				Fn:   cleanupTasks,
+			})
 		}
 
-		cleanupTasks, err := tasks.Start()
+		if isControllerActive(sc.PausedControllers, OLAPController) {
+			olap, err := olap.New(
+				olap.WithAlerter(sc.Alerter),
+				olap.WithMessageQueue(sc.MessageQueueV1),
+				olap.WithRepository(sc.V1),
+				olap.WithLogger(sc.Logger),
+				olap.WithPartition(p),
+				olap.WithTenantAlertManager(sc.TenantAlerter),
+				olap.WithSamplingConfig(sc.Sampling),
+			)
 
-		if err != nil {
-			return nil, fmt.Errorf("could not start tasks controller: %w", err)
+			if err != nil {
+				return nil, fmt.Errorf("could not create olap controller: %w", err)
+			}
+
+			cleanupOlap, err := olap.Start()
+
+			if err != nil {
+				return nil, fmt.Errorf("could not start olap controller: %w", err)
+			}
+
+			teardown = append(teardown, Teardown{
+				Name: "olap controller",
+				Fn:   cleanupOlap,
+			})
 		}
 
-		teardown = append(teardown, Teardown{
-			Name: "tasks controller",
-			Fn:   cleanupTasks,
-		})
-
-		olap, err := olap.New(
-			olap.WithAlerter(sc.Alerter),
-			olap.WithMessageQueue(sc.MessageQueueV1),
-			olap.WithRepository(sc.V1),
-			olap.WithLogger(sc.Logger),
-			olap.WithPartition(p),
-			olap.WithTenantAlertManager(sc.TenantAlerter),
-			olap.WithSamplingConfig(sc.Sampling),
-		)
-
-		if err != nil {
-			return nil, fmt.Errorf("could not create olap controller: %w", err)
-		}
-
-		cleanupOlap, err := olap.Start()
-
-		if err != nil {
-			return nil, fmt.Errorf("could not start olap controller: %w", err)
-		}
-
-		teardown = append(teardown, Teardown{
-			Name: "olap controller",
-			Fn:   cleanupOlap,
-		})
-
 		cleanup1, err := p.StartTenantWorkerPartition(ctx)
 
 		if err != nil {
@@ -1125,3 +1129,18 @@ func startPrometheus(l *zerolog.Logger, c shared.PrometheusConfigFile) Teardown
 		},
 	}
 }
+
+type ControllerName string
+
+const (
+	OLAPController ControllerName = "olap"
+	TaskController ControllerName = "task"
+)
+
+func isControllerActive(pausedControllers map[string]bool, controllerName ControllerName) bool {
+	if isPaused, ok := pausedControllers[string(controllerName)]; !ok || !isPaused {
+		return true
+	}
+
+	return false
+}

pkg/config/loader/loader.go

@@ -608,6 +608,14 @@ func createControllerLayer(dc *database.Layer, cf *server.ServerConfigFile, vers
 		services = strings.Split(cf.ServicesString, " ")
 	}
 
+	pausedControllers := make(map[string]bool)
+
+	if cf.PausedControllers != "" {
+		for _, controller := range strings.Split(cf.PausedControllers, " ") {
+			pausedControllers[controller] = true
+		}
+	}
+
 	if cf.Runtime.Monitoring.TLSRootCAFile == "" {
 		cf.Runtime.Monitoring.TLSRootCAFile = cf.TLS.TLSRootCAFile
 	}
@@ -630,6 +638,7 @@ func createControllerLayer(dc *database.Layer, cf *server.ServerConfigFile, vers
 		MessageQueue:           mq,
 		MessageQueueV1:         mqv1,
 		Services:               services,
+		PausedControllers:      pausedControllers,
 		InternalClientFactory:  internalClientFactory,
 		Logger:                 &l,
 		TLSConfig:              tls,

pkg/config/server/server.go

@@ -47,6 +47,8 @@ type ServerConfigFile struct {
 	// Used to bind the environment variable, since the array is not well supported
 	ServicesString string `mapstructure:"servicesString" json:"servicesString,omitempty"`
 
+	PausedControllers string `mapstructure:"pausedControllers" json:"pausedControllers,omitempty"`
+
 	EnableDataRetention bool `mapstructure:"enableDataRetention" json:"enableDataRetention,omitempty" default:"true"`
 
 	EnableWorkerRetention bool `mapstructure:"enableWorkerRetention" json:"enableWorkerRetention,omitempty" default:"false"`
@@ -481,6 +483,8 @@ type ServerConfig struct {
 
 	Services []string
 
+	PausedControllers map[string]bool
+
 	EnableDataRetention bool
 
 	EnableWorkerRetention bool
@@ -548,6 +552,7 @@ func BindAllEnv(v *viper.Viper) {
 	_ = v.BindEnv("runtime.grpcRateLimit", "SERVER_GRPC_RATE_LIMIT")
 	_ = v.BindEnv("runtime.shutdownWait", "SERVER_SHUTDOWN_WAIT")
 	_ = v.BindEnv("servicesString", "SERVER_SERVICES")
+	_ = v.BindEnv("pausedControllers", "SERVER_PAUSED_CONTROLLERS")
 	_ = v.BindEnv("enableDataRetention", "SERVER_ENABLE_DATA_RETENTION")
 	_ = v.BindEnv("enableWorkerRetention", "SERVER_ENABLE_WORKER_RETENTION")
 	_ = v.BindEnv("runtime.enforceLimits", "SERVER_ENFORCE_LIMITS")