feat(endpoints): add the ability to define endpoints from an external source

api/cron/watcher.go

@@ -0,0 +1,34 @@
+package cron
+
+import (
+	"github.com/portainer/portainer"
+	"github.com/robfig/cron"
+)
+
+// Watcher represents a service for managing crons.
+type Watcher struct {
+	Cron            *cron.Cron
+	EndpointService portainer.EndpointService
+	syncInterval    string
+}
+
+// NewWatcher initializes a new service.
+func NewWatcher(endpointService portainer.EndpointService, syncInterval string) *Watcher {
+	return &Watcher{
+		Cron:            cron.New(),
+		EndpointService: endpointService,
+		syncInterval:    syncInterval,
+	}
+}
+
+// WatchEndpointFile starts a cron job to synchronize the endpoints from a file
+func (watcher *Watcher) WatchEndpointFile(endpointFilePath string) error {
+	job := newEndpointSyncJob(endpointFilePath, watcher.EndpointService)
+	err := job.Sync()
+	if err != nil {
+		return err
+	}
+	watcher.Cron.AddJob("@every "+watcher.syncInterval, job)
+	watcher.Cron.Start()
+	return nil
+}