规则链添加RPC请求，及响应处理

pkg/rule_engine/nodes/action_rpc_request_node.go

@@ -0,0 +1,48 @@
+package nodes
+
+import (
+	"pandax/pkg/global"
+	"pandax/pkg/mqtt"
+	"pandax/pkg/rule_engine/message"
+)
+
+type rpcRequestNode struct {
+	bareNode
+	Timeout int             `json:"timeout"`
+	Payload mqtt.RpcPayload `json:"payload"`
+}
+
+type rpcRequestNodeFactory struct{}
+
+func (f rpcRequestNodeFactory) Name() string     { return "RpcRequestNode" }
+func (f rpcRequestNodeFactory) Category() string { return NODE_CATEGORY_ACTION }
+func (f rpcRequestNodeFactory) Labels() []string { return []string{"Success", "Failure"} }
+func (f rpcRequestNodeFactory) Create(id string, meta Metadata) (Node, error) {
+	node := &rpcRequestNode{
+		bareNode: newBareNode(f.Name(), id, meta, f.Labels()),
+	}
+	return decodePath(meta, node)
+}
+
+func (n *rpcRequestNode) Handle(msg message.Message) error {
+	successLableNode := n.GetLinkedNode("Success")
+	failureLableNode := n.GetLinkedNode("Failure")
+
+	var rpc = &mqtt.RpcRequest{Client: global.MqttClient, Mode: "double", Timeout: n.Timeout}
+	rpc.GetRequestId()
+	respPayload, err := rpc.RequestCmd(n.Payload)
+	if err != nil {
+		if failureLableNode != nil {
+			return failureLableNode.Handle(msg)
+		} else {
+			return err
+		}
+	}
+	msgM := msg.GetMsg()
+	msgM["payload"] = respPayload
+	msg.SetMsg(msgM)
+	if successLableNode != nil {
+		return successLableNode.Handle(msg)
+	}
+	return nil
+}