feat(snapshots): separate snapshots from endpoint DB struct EE-4099 (#7614)

api/datastore/migrator/migrate_dbversion70.go

@@ -0,0 +1,46 @@
+package migrator
+
+import (
+	portainer "github.com/portainer/portainer/api"
+)
+
+func (m *Migrator) migrateDBVersionToDB70() error {
+	// foreach endpoint
+	endpoints, err := m.endpointService.Endpoints()
+	if err != nil {
+		return err
+	}
+
+	for _, endpoint := range endpoints {
+		// copy snapshots to new object
+		migrateLog.Info("- moving snapshots from endpoint to new object")
+		snapshot := portainer.Snapshot{EndpointID: endpoint.ID}
+
+		if len(endpoint.Snapshots) > 0 {
+			snapshot.Docker = &endpoint.Snapshots[len(endpoint.Snapshots)-1]
+		}
+
+		if len(endpoint.Kubernetes.Snapshots) > 0 {
+			snapshot.Kubernetes = &endpoint.Kubernetes.Snapshots[len(endpoint.Kubernetes.Snapshots)-1]
+		}
+
+		// save new object
+		err = m.snapshotService.Create(&snapshot)
+		if err != nil {
+			return err
+		}
+
+		// set to nil old fields
+		migrateLog.Info("- deleting snapshot from endpoint")
+		endpoint.Snapshots = []portainer.DockerSnapshot{}
+		endpoint.Kubernetes.Snapshots = []portainer.KubernetesSnapshot{}
+
+		// update endpoint
+		err = m.endpointService.UpdateEndpoint(endpoint.ID, &endpoint)
+		if err != nil {
+			return err
+		}
+	}
+
+	return nil
+}