[feat] 规则链添加切换设备节点

pkg/rule_engine/nodes/transform_metadata_node.go

@@ -0,0 +1,55 @@
+package nodes
+
+import (
+	"pandax/apps/device/services"
+	"pandax/pkg/rule_engine/message"
+)
+
+type transformMetadataNode struct {
+	bareNode
+	DeviceId string `json:"deviceId" yaml:"deviceId"`
+}
+
+type transformMetadataNodeFactory struct{}
+
+func (f transformMetadataNodeFactory) Name() string     { return "MetadataKeyNode" }
+func (f transformMetadataNodeFactory) Category() string { return NODE_CATEGORY_TRANSFORM }
+func (f transformMetadataNodeFactory) Labels() []string { return []string{"Success", "Failure"} }
+func (f transformMetadataNodeFactory) Create(id string, meta Properties) (Node, error) {
+	node := &transformMetadataNode{
+		bareNode: newBareNode(f.Name(), id, meta, f.Labels()),
+	}
+	return decodePath(meta, node)
+}
+
+func (n *transformMetadataNode) Handle(msg *message.Message) error {
+	n.Debug(msg, message.DEBUGIN, "")
+
+	successLabelNode := n.GetLinkedNode("Success")
+	failureLabelNode := n.GetLinkedNode("Failure")
+	// 获取设备信息
+	device, err := services.DeviceModelDao.FindOne(n.DeviceId)
+	if err != nil {
+		n.Debug(msg, message.DEBUGOUT, err.Error())
+		if failureLabelNode != nil {
+			return failureLabelNode.Handle(msg)
+		} else {
+			return err
+		}
+	}
+	// 更改元数据基本信息
+	msg.Metadata = map[string]interface{}{
+		"deviceId":       n.DeviceId,
+		"deviceName":     device.Name,
+		"deviceType":     device.DeviceType,
+		"deviceProtocol": device.Product.ProtocolName,
+		"productId":      device.Pid,
+		"orgId":          device.OrgId,
+		"owner":          device.Owner,
+	}
+	if successLabelNode != nil {
+		n.Debug(msg, message.DEBUGOUT, "")
+		return successLabelNode.Handle(msg)
+	}
+	return nil
+}