新增蓝图执行代码

util/blueprint/variables.go

@@ -0,0 +1,53 @@
+package blueprint
+
+import "fmt"
+
+const GetVariables = "GetVar"
+const SetVariables = "SetVar"
+
+type GetVariablesNode struct {
+	BaseExecNode
+	nodeName string
+	varName  string
+}
+
+type SetVariablesNode struct {
+	BaseExecNode
+	nodeName string
+	varName  string
+}
+
+func (g *GetVariablesNode) GetName() string {
+	return g.nodeName
+}
+
+func (g *GetVariablesNode) Exec() error {
+	port := g.gr.variables[g.varName]
+	if port == nil {
+		return fmt.Errorf("variable %s not found,node name %s", g.varName, g.nodeName)
+	}
+
+	if !g.SetOutPort(0, port) {
+		return fmt.Errorf("set out port failed,node name %s", g.nodeName)
+	}
+
+	return nil
+}
+
+func (g *SetVariablesNode) GetName() string {
+	return g.nodeName
+}
+
+func (g *SetVariablesNode) Exec() error {
+	port := g.GetInPort(0)
+	if port == nil {
+		return fmt.Errorf("get in port failed,node name %s", g.nodeName)
+	}
+
+	g.gr.variables[g.varName] = port
+	if !g.SetOutPort(0, port) {
+		return fmt.Errorf("set out port failed,node name %s", g.nodeName)
+	}
+
+	return nil
+}