Creating new apps from snapshots support

apps/types.go

@@ -83,6 +83,9 @@ type App struct {
 	DiskUsageBytes int `json:"disk_usage_bytes"`
 	// Disk usage in inodes
 	DiskUsageInodes int `json:"disk_usage_inodes"`
+
+	// This is not store in the database but used in create request when the app suppose to be created from an existing snapshot
+	Snapshot string `json:"snapshot" gorm:"-"`
 }
 
 // Validate do basic checks of the struct values

handlers_nats.go

@@ -195,6 +195,31 @@ func createEventHandler(m *nats.Msg, message *RequestMessage) error {
 		return err
 	}
 
+	// Restore from snapshot if it's noted in the request
+	if len(appTemplate.Snapshot) > 0 {
+		// Setup processors
+		snapshotProcessor := apps.SnapshotProcessor{
+			AppsPath:        config.AppsPath,
+			TmpSnapshotPath: config.SnapshotsPath,
+
+			Driver: drivers.S3Driver{
+				S3AccessKey: config.SnapshotsS3AccessKey,
+				S3SecretKey: config.SnapshotsS3SecretKey,
+				S3Endpoint:  config.SnapshotsS3Endpoint,
+				S3SSL:       config.SnapshotsS3SSL,
+				Bucket:      config.SnapshotsS3Bucket,
+			},
+		}
+
+		// Restore the data
+		err = snapshotProcessor.RestoreSnapshot(appTemplate.Snapshot, message.AppName)
+		if err != nil {
+			log.Println("ERROR restore snapshot error: " + err.Error())
+			publish(message.AppName, "backend problem", true)
+			return err
+		}
+	}
+
 	err = container.Start()
 	if err != nil {
 		log.Println("ERROR create application problem: " + err.Error())