mirror of
https://github.com/node-red/node-red.git
synced 2023-10-10 13:36:53 +02:00
269 lines
10 KiB
JavaScript
269 lines
10 KiB
JavaScript
/**
|
|
* Copyright JS Foundation and other contributors, http://js.foundation
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
**/
|
|
|
|
const clone = require("clone");
|
|
const Flow = require('./Flow').Flow;
|
|
|
|
const redUtil = require("@node-red/util").util;
|
|
const flowUtil = require("./util");
|
|
|
|
var Log;
|
|
|
|
/**
|
|
* This class represents a subflow - which is handled as a special type of Flow
|
|
*/
|
|
class Subflow extends Flow {
|
|
|
|
/**
|
|
* Create a Subflow object.
|
|
* This takes a subflow definition and instance node, creates a clone of the
|
|
* definition with unique ids applied and passes to the super class.
|
|
* @param {[type]} parent [description]
|
|
* @param {[type]} globalFlow [description]
|
|
* @param {[type]} subflowDef [description]
|
|
* @param {[type]} subflowInstance [description]
|
|
*/
|
|
constructor(parent,globalFlow,subflowDef,subflowInstance) {
|
|
// console.log(subflowDef);
|
|
// console.log("CREATE SUBFLOW",subflowDef.id,subflowInstance.id);
|
|
// console.log("SubflowInstance\n"+JSON.stringify(subflowInstance," ",2));
|
|
// console.log("SubflowDef\n"+JSON.stringify(subflowDef," ",2));
|
|
var subflows = parent.flow.subflows;
|
|
var globalSubflows = parent.global.subflows;
|
|
|
|
var node_map = {};
|
|
var node;
|
|
var wires;
|
|
var i;
|
|
|
|
var subflowInternalFlowConfig = {
|
|
id: subflowInstance.id,
|
|
configs: {},
|
|
nodes: {},
|
|
subflows: {}
|
|
}
|
|
|
|
if (subflowDef.configs) {
|
|
// Clone all of the subflow config node definitions and give them new IDs
|
|
for (i in subflowDef.configs) {
|
|
if (subflowDef.configs.hasOwnProperty(i)) {
|
|
node = createNodeInSubflow(subflowInstance.id,subflowDef.configs[i]);
|
|
node_map[node._alias] = node;
|
|
subflowInternalFlowConfig.configs[node.id] = node;
|
|
}
|
|
}
|
|
}
|
|
if (subflowDef.nodes) {
|
|
// Clone all of the subflow node definitions and give them new IDs
|
|
for (i in subflowDef.nodes) {
|
|
if (subflowDef.nodes.hasOwnProperty(i)) {
|
|
node = createNodeInSubflow(subflowInstance.id,subflowDef.nodes[i]);
|
|
node_map[node._alias] = node;
|
|
subflowInternalFlowConfig.nodes[node.id] = node;
|
|
}
|
|
}
|
|
}
|
|
|
|
subflowInternalFlowConfig.subflows = clone(subflowDef.subflows || {});
|
|
|
|
remapSubflowNodes(subflowInternalFlowConfig.configs,node_map);
|
|
remapSubflowNodes(subflowInternalFlowConfig.nodes,node_map);
|
|
|
|
// console.log("Instance config\n",JSON.stringify(subflowInternalFlowConfig,"",2));
|
|
|
|
super(parent,globalFlow,subflowInternalFlowConfig);
|
|
|
|
this.TYPE = 'subflow';
|
|
this.subflowDef = subflowDef;
|
|
this.subflowInstance = subflowInstance;
|
|
this.node_map = node_map;
|
|
}
|
|
|
|
/**
|
|
* Start the subflow.
|
|
* This creates a subflow instance node to handle the inbound messages. It also
|
|
* rewires an subflow internal node that is connected to an output so it is connected
|
|
* to the parent flow nodes the subflow instance is wired to.
|
|
* @param {[type]} diff [description]
|
|
* @return {[type]} [description]
|
|
*/
|
|
start(diff) {
|
|
var self = this;
|
|
// Create a subflow node to accept inbound messages and route appropriately
|
|
var Node = require("../Node");
|
|
var subflowInstanceConfig = {
|
|
id: this.subflowInstance.id,
|
|
type: this.subflowInstance.type,
|
|
z: this.subflowInstance.z,
|
|
name: this.subflowInstance.name,
|
|
wires: [],
|
|
_flow: this
|
|
}
|
|
if (this.subflowDef.in) {
|
|
subflowInstanceConfig.wires = this.subflowDef.in.map(function(n) { return n.wires.map(function(w) { return self.node_map[w.id].id;})})
|
|
subflowInstanceConfig._originalWires = clone(subflowInstanceConfig.wires);
|
|
}
|
|
|
|
this.node = new Node(subflowInstanceConfig);
|
|
this.node.on("input", function(msg) { this.send(msg);});
|
|
|
|
this.node._updateWires = this.node.updateWires;
|
|
|
|
this.node.updateWires = function(newWires) {
|
|
// Wire the subflow outputs
|
|
if (self.subflowDef.out) {
|
|
var node,wires,i,j;
|
|
// Restore the original wiring to the internal nodes
|
|
subflowInstanceConfig.wires = clone(subflowInstanceConfig._originalWires);
|
|
for (i=0;i<self.subflowDef.out.length;i++) {
|
|
wires = self.subflowDef.out[i].wires;
|
|
for (j=0;j<wires.length;j++) {
|
|
if (wires[j].id != self.subflowDef.id) {
|
|
node = self.node_map[wires[j].id];
|
|
if (node._originalWires) {
|
|
node.wires = clone(node._originalWires);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
var modifiedNodes = {};
|
|
var subflowInstanceModified = false;
|
|
for (i=0;i<self.subflowDef.out.length;i++) {
|
|
wires = self.subflowDef.out[i].wires;
|
|
for (j=0;j<wires.length;j++) {
|
|
if (wires[j].id === self.subflowDef.id) {
|
|
subflowInstanceConfig.wires[wires[j].port] = subflowInstanceConfig.wires[wires[j].port].concat(newWires[i]);
|
|
subflowInstanceModified = true;
|
|
} else {
|
|
node = self.node_map[wires[j].id];
|
|
node.wires[wires[j].port] = node.wires[wires[j].port].concat(newWires[i]);
|
|
modifiedNodes[node.id] = node;
|
|
}
|
|
}
|
|
}
|
|
Object.keys(modifiedNodes).forEach(function(id) {
|
|
var node = modifiedNodes[id];
|
|
self.activeNodes[id].updateWires(node.wires);
|
|
});
|
|
|
|
if (subflowInstanceModified) {
|
|
self.node._updateWires(subflowInstanceConfig.wires);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Wire the subflow outputs
|
|
if (this.subflowDef.out) {
|
|
var modifiedNodes = {};
|
|
for (var i=0;i<this.subflowDef.out.length;i++) {
|
|
// i: the output index
|
|
// This is what this Output is wired to
|
|
wires = this.subflowDef.out[i].wires;
|
|
for (var j=0;j<wires.length;j++) {
|
|
if (wires[j].id === this.subflowDef.id) {
|
|
// A subflow input wired straight to a subflow output
|
|
subflowInstanceConfig.wires[wires[j].port] = subflowInstanceConfig.wires[wires[j].port].concat(this.subflowInstance.wires[i])
|
|
this.node._updateWires(subflowInstanceConfig.wires);
|
|
} else {
|
|
var node = self.node_map[wires[j].id];
|
|
modifiedNodes[node.id] = node;
|
|
if (!node._originalWires) {
|
|
node._originalWires = clone(node.wires);
|
|
}
|
|
node.wires[wires[j].port] = (node.wires[wires[j].port]||[]).concat(this.subflowInstance.wires[i]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
super.start(diff);
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Clone a node definition for use within a subflow instance.
|
|
* Give the node a new id and set its _alias property to record
|
|
* its association with the original node definition.
|
|
* @param {[type]} subflowInstanceId [description]
|
|
* @param {[type]} def [description]
|
|
* @return {[type]} [description]
|
|
*/
|
|
function createNodeInSubflow(subflowInstanceId, def) {
|
|
let node = clone(def);
|
|
let nid = redUtil.generateId();
|
|
// console.log("Create Node In subflow",node.id, "--->",nid, "(",node.type,")")
|
|
// node_map[node.id] = node;
|
|
node._alias = node.id;
|
|
node.id = nid;
|
|
node.z = subflowInstanceId;
|
|
return node;
|
|
}
|
|
|
|
|
|
/**
|
|
* Given an object of {id:nodes} and a map of {old-id:node}, modifiy all
|
|
* properties in the nodes object to reference the new node ids.
|
|
* This handles:
|
|
* - node.wires,
|
|
* - node.scope of Catch and Status nodes,
|
|
* - node.XYZ for any property where XYZ is recognised as an old property
|
|
* @param {[type]} nodes [description]
|
|
* @param {[type]} nodeMap [description]
|
|
* @return {[type]} [description]
|
|
*/
|
|
function remapSubflowNodes(nodes,nodeMap) {
|
|
for (var id in nodes) {
|
|
if (nodes.hasOwnProperty(id)) {
|
|
var node = nodes[id];
|
|
if (node.wires) {
|
|
var outputs = node.wires;
|
|
for (j=0;j<outputs.length;j++) {
|
|
wires = outputs[j];
|
|
for (k=0;k<wires.length;k++) {
|
|
outputs[j][k] = nodeMap[outputs[j][k]].id
|
|
}
|
|
}
|
|
}
|
|
if ((node.type === 'catch' || node.type === 'status') && node.scope) {
|
|
node.scope = node.scope.map(function(id) {
|
|
return nodeMap[id]?nodeMap[id].id:""
|
|
})
|
|
} else {
|
|
for (var prop in node) {
|
|
if (node.hasOwnProperty(prop) && prop !== '_alias') {
|
|
if (nodeMap[node[prop]]) {
|
|
//console.log("Mapped",node.type,node.id,prop,nodeMap[node[prop]].id);
|
|
node[prop] = nodeMap[node[prop]].id;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
function createSubflow(parent,globalFlow,subflowDef,subflowInstance) {
|
|
return new Subflow(parent,globalFlow,subflowDef,subflowInstance)
|
|
}
|
|
|
|
module.exports = {
|
|
init: function(runtime) {
|
|
Log = runtime.log;
|
|
},
|
|
create: createSubflow
|
|
}
|