feat: only write cron entries when working on docker-local scheduler

plugins/scheduler-docker-local/functions.go

@@ -115,7 +115,12 @@ func generateCronEntries() ([]cron.TemplateCommand, error) {
 	return commands, nil
 }
 
-func writeCronEntries() error {
+func writeCronEntries(scheduler string) error {
+	// allow empty scheduler, which means all apps (used by letsencrypt)
+	if scheduler != "docker-local" && scheduler != "" {
+		return nil
+	}
+
 	commands, err := generateCronEntries()
 	if err != nil {
 		return err

plugins/scheduler-docker-local/post-delete

@@ -15,7 +15,8 @@ trigger-scheduler-docker-local-post-delete() {
   # remove all application containers
   "$DOCKER_BIN" container ls --filter "label=com.dokku.app-name=${APP}" -q | xargs -n1 -I {} "$DOCKER_BIN" container rm --force {} &>/dev/null || true
 
-  plugn trigger scheduler-cron-write
+  local DOKKU_SCHEDULER="$(get_app_scheduler "$APP")"
+  plugn trigger scheduler-cron-write "$DOKKU_SCHEDULER" "$APP"
 }
 
 trigger-scheduler-docker-local-post-delete "$@"

plugins/scheduler-docker-local/post-deploy

@@ -7,7 +7,8 @@ trigger-scheduler-docker-local-post-deploy() {
   declare trigger="post-deploy"
   declare APP="$1"
 
-  plugn trigger scheduler-cron-write
+  local DOKKU_SCHEDULER="$(get_app_scheduler "$APP")"
+  plugn trigger scheduler-cron-write "$DOKKU_SCHEDULER" "$APP"
 }
 
 trigger-scheduler-docker-local-post-deploy "$@"

plugins/scheduler-docker-local/scheduler-stop

@@ -50,6 +50,8 @@ trigger-scheduler-docker-local-scheduler-stop() {
       "$DOCKER_BIN" container rm --force $DOKKU_APP_CIDS &>/dev/null || true
     fi
   fi
+
+  plugn trigger scheduler-cron-write "$DOKKU_SCHEDULER" "$APP"
 }
 
 trigger-scheduler-docker-local-scheduler-stop "$@"

plugins/scheduler-docker-local/src/triggers/triggers.go

@@ -19,7 +19,8 @@ func main() {
 	var err error
 	switch trigger {
 	case "scheduler-cron-write":
-		err = schedulerdockerlocal.TriggerCronWrite()
+		scheduler := flag.Arg(0)
+		err = schedulerdockerlocal.TriggerCronWrite(scheduler)
 	default:
 		err = fmt.Errorf("Invalid plugin trigger call: %s", trigger)
 	}

plugins/scheduler-docker-local/triggers.go

@@ -1,6 +1,6 @@
 package schedulerdockerlocal
 
 // TriggerCronWrite force updates the cron file for all apps
-func TriggerCronWrite() error {
-	return writeCronEntries()
+func TriggerCronWrite(scheduler string) error {
+	return writeCronEntries(scheduler)
 }