feat: added modules

core/models/delegate/model_node.go

@@ -0,0 +1,37 @@
+package delegate
+
+import (
+	"github.com/crawlab-team/crawlab/core/constants"
+	"github.com/crawlab-team/crawlab/core/interfaces"
+	"time"
+)
+
+type ModelNodeDelegate struct {
+	n interfaces.Node
+	interfaces.ModelDelegate
+}
+
+func (d *ModelNodeDelegate) UpdateStatus(active bool, activeTs *time.Time, status string) (err error) {
+	d.n.SetActive(active)
+	if activeTs != nil {
+		d.n.SetActiveTs(*activeTs)
+	}
+	d.n.SetStatus(status)
+	return d.Save()
+}
+
+func (d *ModelNodeDelegate) UpdateStatusOnline() (err error) {
+	now := time.Now()
+	return d.UpdateStatus(true, &now, constants.NodeStatusOnline)
+}
+
+func (d *ModelNodeDelegate) UpdateStatusOffline() (err error) {
+	return d.UpdateStatus(false, nil, constants.NodeStatusOffline)
+}
+
+func NewModelNodeDelegate(n interfaces.Node) interfaces.ModelNodeDelegate {
+	return &ModelNodeDelegate{
+		n:             n,
+		ModelDelegate: NewModelDelegate(n),
+	}
+}