fix: don't retry indefinitly with local scaling

If the runner keeps crashing dont keep restarting it

backend/controller/scaling/localscaling/local_scaling.go

@@ -25,6 +25,8 @@ import (
 
 var _ scaling.RunnerScaling = &localScaling{}
 
+const maxExits = 10
+
 type localScaling struct {
 	lock     sync.Mutex
 	cacheDir string
@@ -71,6 +73,7 @@ type deploymentInfo struct {
 	replicas int32
 	key      string
 	language string
+	exits    int
 }
 type runnerInfo struct {
 	cancelFunc context.CancelFunc
@@ -133,7 +136,7 @@ func (l *localScaling) handleSchemaChange(ctx context.Context, msg *ftlv1.PullSc
 func (l *localScaling) reconcileRunners(ctx context.Context, deploymentRunners *deploymentInfo) error {
 	// Must be called under lock
 	logger := log.FromContext(ctx)
-	if deploymentRunners.replicas > 0 && !deploymentRunners.runner.Ok() {
+	if deploymentRunners.replicas > 0 && !deploymentRunners.runner.Ok() && deploymentRunners.exits < maxExits {
 		if err := l.startRunner(ctx, deploymentRunners.key, deploymentRunners); err != nil {
 			logger.Errorf(err, "Failed to start runner")
 			return err
@@ -205,6 +208,10 @@ func (l *localScaling) startRunner(ctx context.Context, deploymentKey string, in
 		}
 		l.lock.Lock()
 		defer l.lock.Unlock()
+		info.exits++
+		if info.exits >= maxExits {
+			logger.Errorf(fmt.Errorf("too many restarts"), "Runner failed too many times, not restarting")
+		}
 		info.runner = optional.None[runnerInfo]()
 		if l.debugPorts[info.module] == debug {
 			delete(l.debugPorts, info.module)

docs/content/docs/reference/secretsconfig.md

@@ -17,6 +17,11 @@ top = false
 
 Configuration values are named, typed values. They are managed by the `ftl config` command-line.
 
+{% code_selector() %}
+
+<!-- go -->
+
+
 To declare a configuration value use the following syntax:
 
 ```go
@@ -29,6 +34,13 @@ Then to retrieve a configuration value:
 username = defaultUser.Get(ctx)
 ```
 
+<!-- kotlin -->
+
+<!-- java -->
+
+{% end %}
+
+
 ### Secrets
 
 Secrets are encrypted, named, typed values. They are managed by the `ftl secret` command-line.