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Add deployment types in runtime
- removes ui option as it needs work
This commit is contained in:
Nick O'Leary
638
red/nodes/Flow.js
Normal file
638
red/nodes/Flow.js
Normal file
@@ -0,0 +1,638 @@
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/**
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* Copyright 2014 IBM Corp.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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**/
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var util = require("util");
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var when = require("when");
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var clone = require("clone");
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var typeRegistry = require("./registry");
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var credentials = require("./credentials");
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var redUtil = require("../util");
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var events = require("../events");
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function getID() {
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return (1+Math.random()*4294967295).toString(16);
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}
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function createNode(type,config) {
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var nn = null;
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var nt = typeRegistry.get(type);
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if (nt) {
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try {
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nn = new nt(clone(config));
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}
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catch (err) {
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util.log("[red] "+type+" : "+err);
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}
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} else {
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util.log("[red] unknown type: "+type);
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}
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return nn;
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}
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function createSubflow(sf,sfn,subflows) {
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//console.log("CREATE SUBFLOW",sf.config.id,sfn.id);
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var nodes = [];
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var node_map = {};
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var newNodes = [];
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var node;
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var wires;
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var i,j,k;
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// Clone all of the subflow node definitions and give them new IDs
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for (i=0;i<sf.nodes.length;i++) {
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node = clone(sf.nodes[i].config);
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var nid = getID();
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node_map[node.id] = node;
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node._alias = node.id;
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node.id = nid;
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newNodes.push(node);
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}
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// Update all subflow interior wiring to reflect new node IDs
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for (i=0;i<newNodes.length;i++) {
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node = newNodes[i];
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var outputs = node.wires;
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for (j=0;j<outputs.length;j++) {
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wires = outputs[j];
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for (k=0;k<wires.length;k++) {
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outputs[j][k] = node_map[outputs[j][k]].id
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}
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}
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}
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// Create a subflow node to accept inbound messages and route appropriately
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var Node = require("./Node");
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var subflowInstance = {
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id: sfn.id,
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type: sfn.type,
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name: sfn.name,
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wires: []
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}
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if (sf.config.in) {
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subflowInstance.wires = sf.config.in.map(function(n) { return n.wires.map(function(w) { return node_map[w.id].id;})})
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subflowInstance._originalWires = clone(subflowInstance.wires);
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}
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var subflowNode = new Node(subflowInstance);
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subflowNode.on("input", function(msg) { this.send(msg);});
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subflowNode._updateWires = subflowNode.updateWires;
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subflowNode.updateWires = function(newWires) {
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// Wire the subflow outputs
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if (sf.config.out) {
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var node,wires,i,j;
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// Restore the original wiring to the internal nodes
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subflowInstance.wires = clone(subflowInstance._originalWires);
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for (i=0;i<sf.config.out.length;i++) {
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wires = sf.config.out[i].wires;
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for (j=0;j<wires.length;j++) {
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if (wires[j].id != sf.config.id) {
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node = node_map[wires[j].id];
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if (node._originalWires) {
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node.wires = clone(node._originalWires);
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}
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}
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}
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}
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var modifiedNodes = {};
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var subflowInstanceModified = false;
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for (i=0;i<sf.config.out.length;i++) {
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wires = sf.config.out[i].wires;
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for (j=0;j<wires.length;j++) {
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if (wires[j].id === sf.config.id) {
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subflowInstance.wires[wires[j].port] = subflowInstance.wires[wires[j].port].concat(newWires[i]);
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subflowInstanceModified = true;
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} else {
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node = node_map[wires[j].id];
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node.wires[wires[j].port] = node.wires[wires[j].port].concat(newWires[i]);
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modifiedNodes[node.id] = node;
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}
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}
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}
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}
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Object.keys(modifiedNodes).forEach(function(id) {
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var node = modifiedNodes[id];
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subflowNode.instanceNodes[id].updateWires(node.wires);
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});
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if (subflowInstanceModified) {
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subflowNode._updateWires(subflowInstance.wires);
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}
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}
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nodes.push(subflowNode);
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// Wire the subflow outputs
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if (sf.config.out) {
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var modifiedNodes = {};
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for (i=0;i<sf.config.out.length;i++) {
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wires = sf.config.out[i].wires;
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for (j=0;j<wires.length;j++) {
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if (wires[j].id === sf.config.id) {
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// A subflow input wired straight to a subflow output
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subflowInstance.wires[wires[j].port] = subflowInstance.wires[wires[j].port].concat(sfn.wires[i])
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subflowNode._updateWires(subflowInstance.wires);
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} else {
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node = node_map[wires[j].id];
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modifiedNodes[node.id] = node;
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if (!node._originalWires) {
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node._originalWires = clone(node.wires);
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}
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node.wires[wires[j].port] = node.wires[wires[j].port].concat(sfn.wires[i]);
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}
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}
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}
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}
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// Instantiate the nodes
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for (i=0;i<newNodes.length;i++) {
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node = newNodes[i];
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var type = node.type;
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var m = /^subflow:(.+)$/.exec(type);
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if (!m) {
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nodes.push(createNode(type,node));
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} else {
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var subflowId = m[1];
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nodes = nodes.concat(createSubflow(subflows[subflowId],node,subflows));
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}
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}
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subflowNode.instanceNodes = {};
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nodes.forEach(function(node) {
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subflowNode.instanceNodes[node.id] = node;
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});
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return nodes;
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}
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function diffNodeConfigs(oldNode,newNode) {
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if (oldNode == null) {
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return true;
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} else {
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for (var p in newNode) {
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if (newNode.hasOwnProperty(p) && p != "x" && p != "y" && p != "wires") {
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if (!redUtil.compareObjects(oldNode[p],newNode[p])) {
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return true;
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}
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}
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}
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}
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return false;
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}
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var subflowInstanceRE = /^subflow:(.+)$/;
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function Flow(config) {
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this.activeNodes = {};
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this.subflowInstanceNodes = {};
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this.parseConfig(config);
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}
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Flow.prototype.parseConfig = function(config) {
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var i;
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this.config = config;
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this.allNodes = {};
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this.nodes = {};
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this.subflows = {};
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var unknownTypes = {};
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for (i=0;i<this.config.length;i++) {
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var nodeConfig = this.config[i];
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var nodeType = nodeConfig.type;
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if (nodeType == "subflow") {
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this.subflows[nodeConfig.id] = {
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type: "subflow",
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config: nodeConfig,
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nodes: []
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}
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}
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}
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//console.log("Known subflows:",Object.keys(this.subflows));
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for (i=0;i<this.config.length;i++) {
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var nodeConfig = this.config[i];
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this.allNodes[nodeConfig.id] = nodeConfig;
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var nodeType = nodeConfig.type;
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if (nodeConfig.credentials) {
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credentials.extract(nodeConfig);
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delete nodeConfig.credentials;
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}
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if (nodeType != "tab" && nodeType != "subflow") {
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var m = subflowInstanceRE.exec(nodeType);
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if ((m && !this.subflows[m[1]]) || (!m && !typeRegistry.get(nodeType))) {
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// This is an unknown subflow or an unknown type
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unknownTypes[nodeType] = true;
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} else {
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var nodeInfo = {
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type: nodeType,
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config:nodeConfig
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}
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if (m) {
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nodeInfo.subflow = m[1];
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}
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if (this.subflows[nodeConfig.z]) {
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this.subflows[nodeConfig.z].nodes.push(nodeInfo);
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} else {
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this.nodes[nodeConfig.id] = nodeInfo;
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}
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}
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}
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}
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//console.log("NODES");
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//for (i in this.nodes) {
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// if (this.nodes.hasOwnProperty(i)) {
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// console.log(" ",i,this.nodes[i].type,this.nodes[i].config.name||"");
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// }
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//}
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//console.log("SUBFLOWS");
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//for (i in this.subflows) {
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// if (this.subflows.hasOwnProperty(i)) {
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// console.log(" ",i,this.subflows[i].type,this.subflows[i].config.name||"");
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// for (var j=0;j<this.subflows[i].nodes.length;j++) {
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// console.log(" ",this.subflows[i].nodes[j].config.id,this.subflows[i].nodes[j].type,this.subflows[i].nodes[j].config.name||"");
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// }
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// }
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//}
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this.missingTypes = Object.keys(unknownTypes);
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}
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Flow.prototype.start = function() {
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if (this.missingTypes.length > 0) {
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throw new Error("missing types");
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}
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events.emit("nodes-starting");
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for (var id in this.nodes) {
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if (this.nodes.hasOwnProperty(id)) {
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var node = this.nodes[id];
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if (!node.subflow) {
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if (!this.activeNodes[id]) {
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this.activeNodes[id] = createNode(node.type,node.config);
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//console.log(id,"created");
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} else {
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//console.log(id,"already running");
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}
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} else {
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if (!this.subflowInstanceNodes[id]) {
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var nodes = createSubflow(this.subflows[node.subflow],node.config,this.subflows);
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this.subflowInstanceNodes[id] = nodes.map(function(n) { return n.id});
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for (var i=0;i<nodes.length;i++) {
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this.activeNodes[nodes[i].id] = nodes[i];
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}
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//console.log(id,"(sf) created");
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} else {
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//console.log(id,"(sf) already running");
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}
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}
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}
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}
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credentials.clean(this.config);
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events.emit("nodes-started");
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}
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Flow.prototype.stop = function(nodeList) {
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nodeList = nodeList || Object.keys(this.activeNodes);
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var flow = this;
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return when.promise(function(resolve) {
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events.emit("nodes-stopping");
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var promises = [];
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for (var i=0;i<nodeList.length;i++) {
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var node = flow.activeNodes[nodeList[i]];
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if (node) {
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try {
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var p = node.close();
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if (p) {
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promises.push(p);
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}
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} catch(err) {
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node.error(err);
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}
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delete flow.subflowInstanceNodes[nodeList[i]];
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delete flow.activeNodes[nodeList[i]];
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}
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}
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when.settle(promises).then(function() {
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events.emit("nodes-stopped");
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resolve();
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});
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});
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}
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Flow.prototype.getMissingTypes = function() {
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return this.missingTypes;
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}
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Flow.prototype.typeRegistered = function(type) {
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if (this.missingTypes.length > 0) {
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var i = this.missingTypes.indexOf(type);
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if (i != -1) {
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this.missingTypes.splice(i,1);
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if (this.missingTypes.length === 0) {
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this.start();
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}
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}
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}
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}
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Flow.prototype.getNode = function(id) {
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return this.activeNodes[id];
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}
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Flow.prototype.getFlow = function() {
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//console.log(this.config);
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return this.config;
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}
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Flow.prototype.applyConfig = function(config,type) {
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var diff = this.diffFlow(config);
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//console.log(diff);
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//var diff = {
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// deleted:[]
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// changed:[]
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// linked:[]
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// wiringChanged: []
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//}
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var nodesToStop = [];
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var nodesToCreate = [];
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var nodesToRewire = diff.wiringChanged;
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if (type == "nodes") {
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nodesToStop = diff.deleted.concat(diff.changed);
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nodesToCreate = diff.changed;
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} else if (type == "flows") {
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nodesToStop = diff.deleted.concat(diff.changed).concat(diff.linked);
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nodesToCreate = diff.changed.concat(diff.linked);
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}
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var activeNodesToStop = [];
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for (var i=0;i<nodesToStop.length;i++) {
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var id = nodesToStop[i];
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if (this.subflowInstanceNodes[id]) {
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activeNodesToStop = activeNodesToStop.concat(this.subflowInstanceNodes[id]);
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} else if (this.activeNodes[id]) {
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activeNodesToStop.push(id);
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}
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}
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//console.log(activeNodesToStop);
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var flow = this;
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return this.stop(activeNodesToStop).then(function() {
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flow.parseConfig(config);
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for (var i=0;i<nodesToRewire.length;i++) {
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var node = flow.activeNodes[nodesToRewire[i]];
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if (node) {
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node.updateWires(flow.allNodes[node.id].wires);
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||||
}
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}
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flow.start();
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})
|
||||
}
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||||
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Flow.prototype.diffFlow = function(config) {
|
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var flow = this;
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var configNodes = {};
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||||
var changedNodes = {};
|
||||
var deletedNodes = {};
|
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var linkChangedNodes = {};
|
||||
|
||||
var activeLinks = {};
|
||||
var newLinks = {};
|
||||
|
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var changedSubflowStack = [];
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var changedSubflows = {};
|
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|
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var buildNodeLinks = function(nodeLinks,n,nodes) {
|
||||
nodeLinks[n.id] = nodeLinks[n.id] || [];
|
||||
if (n.wires) {
|
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for (var j=0;j<n.wires.length;j++) {
|
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var wires = n.wires[j];
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||||
for (var k=0;k<wires.length;k++) {
|
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nodeLinks[n.id].push(wires[k]);
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var nn = nodes[wires[k]];
|
||||
if (nn) {
|
||||
nodeLinks[nn.id] = nodeLinks[nn.id] || [];
|
||||
nodeLinks[nn.id].push(n.id);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
config.forEach(function(node) {
|
||||
configNodes[node.id] = node;
|
||||
});
|
||||
|
||||
config.forEach(function(node) {
|
||||
var changed = false;
|
||||
if (node.credentials) {
|
||||
changed = true;
|
||||
delete node.credentials;
|
||||
} else {
|
||||
changed = diffNodeConfigs(flow.allNodes[node.id],node);
|
||||
if (!changed) {
|
||||
if (configNodes[node.z] && configNodes[node.z].type == "subflow") {
|
||||
var originalNode = flow.allNodes[node.id];
|
||||
if (originalNode && !redUtil.compareObjects(originalNode.wires,node.wires)) {
|
||||
// This is a node in a subflow whose wiring has changed. Mark subflow as changed
|
||||
changed = true;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
if (changed) {
|
||||
changedNodes[node.id] = node;
|
||||
}
|
||||
});
|
||||
|
||||
this.config.forEach(function(node) {
|
||||
if (!configNodes[node.id]) {
|
||||
deletedNodes[node.id] = node;
|
||||
}
|
||||
buildNodeLinks(activeLinks,node,flow.allNodes);
|
||||
});
|
||||
|
||||
this.config.forEach(function(node) {
|
||||
for (var prop in node) {
|
||||
if (node.hasOwnProperty(prop) && prop != "z") {
|
||||
// This node has a property that references a changed node
|
||||
// Assume it is a config node change and mark this node as
|
||||
// changed.
|
||||
if (changedNodes[node[prop]]) {
|
||||
changedNodes[node.id] = node;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
});
|
||||
|
||||
var checkSubflowMembership = function(nodes,id) {
|
||||
var node = nodes[id];
|
||||
if (node) {
|
||||
if (node.type == "subflow") {
|
||||
changedSubflows[id] = node;
|
||||
changedSubflowStack.push(id);
|
||||
} else if (nodes[node.z] && nodes[node.z].type == "subflow") {
|
||||
if (!changedSubflows[node.z]) {
|
||||
changedSubflows[node.z] = nodes[node.z];
|
||||
changedSubflowStack.push(node.z);
|
||||
}
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
Object.keys(changedNodes).forEach(function(n) { checkSubflowMembership(configNodes,n)});
|
||||
Object.keys(deletedNodes).forEach(function(n) { checkSubflowMembership(flow.allNodes,n)});
|
||||
|
||||
while (changedSubflowStack.length > 0) {
|
||||
var subflowId = changedSubflowStack.pop();
|
||||
|
||||
config.forEach(function(node) {
|
||||
if (node.type == "subflow:"+subflowId) {
|
||||
if (!changedNodes[node.id]) {
|
||||
changedNodes[node.id] = node;
|
||||
checkSubflowMembership(configNodes,node.id);
|
||||
}
|
||||
}
|
||||
});
|
||||
|
||||
}
|
||||
|
||||
config.forEach(function(node) {
|
||||
buildNodeLinks(newLinks,node,configNodes);
|
||||
});
|
||||
|
||||
var markLinkedNodes = function(linkChanged,changedNodes,linkMap,allNodes) {
|
||||
var stack = Object.keys(changedNodes);
|
||||
var visited = {};
|
||||
|
||||
while(stack.length > 0) {
|
||||
var id = stack.pop();
|
||||
|
||||
var linkedNodes = linkMap[id];
|
||||
if (linkedNodes) {
|
||||
for (var i=0;i<linkedNodes.length;i++) {
|
||||
linkedNodeId = linkedNodes[i];
|
||||
if (changedNodes[linkedNodeId] || linkChanged[linkedNodeId]) {
|
||||
// Do nothing - this linked node is already marked as changed, so will get done
|
||||
} else {
|
||||
linkChanged[linkedNodeId] = true;
|
||||
stack.push(linkedNodeId);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
markLinkedNodes(linkChangedNodes,changedNodes,newLinks,configNodes);
|
||||
markLinkedNodes(linkChangedNodes,deletedNodes,activeLinks,flow.allNodes);
|
||||
|
||||
|
||||
var modifiedLinkNodes = {};
|
||||
|
||||
config.forEach(function(node) {
|
||||
if (!changedNodes[node.id]) {
|
||||
// only concerned about unchanged nodes whose wiring may have changed
|
||||
var newNodeLinks = newLinks[node.id];
|
||||
var oldNodeLinks = activeLinks[node.id];
|
||||
|
||||
var newLinkMap = {};
|
||||
newNodeLinks.forEach(function(l) { newLinkMap[l] = (newLinkMap[l]||0)+1;});
|
||||
|
||||
var oldLinkMap = {};
|
||||
oldNodeLinks.forEach(function(l) { oldLinkMap[l] = (oldLinkMap[l]||0)+1;});
|
||||
|
||||
newNodeLinks.forEach(function(link) {
|
||||
if (newLinkMap[link] != oldLinkMap[link]) {
|
||||
modifiedLinkNodes[node.id] = node;
|
||||
modifiedLinkNodes[link] = configNodes[link];
|
||||
linkChangedNodes[node.id] = node;
|
||||
linkChangedNodes[link] = configNodes[link];
|
||||
}
|
||||
});
|
||||
|
||||
oldNodeLinks.forEach(function(link) {
|
||||
if (newLinkMap[link] != oldLinkMap[link]) {
|
||||
modifiedLinkNodes[node.id] = node;
|
||||
modifiedLinkNodes[link] = configNodes[link];
|
||||
linkChangedNodes[node.id] = node;
|
||||
linkChangedNodes[link] = configNodes[link];
|
||||
}
|
||||
});
|
||||
}
|
||||
});
|
||||
|
||||
markLinkedNodes(linkChangedNodes,modifiedLinkNodes,newLinks,configNodes);
|
||||
|
||||
|
||||
//config.forEach(function(n) {
|
||||
// console.log((changedNodes[n.id]!=null)?"[C]":"[ ]",(linkChangedNodes[n.id]!=null)?"[L]":"[ ]","[ ]",n.id,n.type,n.name);
|
||||
//});
|
||||
|
||||
//Object.keys(deletedNodes).forEach(function(id) {
|
||||
// var n = flow.allNodes[id];
|
||||
// console.log("[ ] [ ] [D]",n.id,n.type);
|
||||
//});
|
||||
|
||||
var diff = {
|
||||
deleted: Object.keys(deletedNodes),
|
||||
changed: Object.keys(changedNodes),
|
||||
linked: Object.keys(linkChangedNodes),
|
||||
wiringChanged: []
|
||||
}
|
||||
|
||||
config.forEach(function(n) {
|
||||
if (!configNodes[n.z] || configNodes[n.z].type != "subflow") {
|
||||
var originalNode = flow.allNodes[n.id];
|
||||
if (originalNode && !redUtil.compareObjects(originalNode.wires,n.wires)) {
|
||||
diff.wiringChanged.push(n.id);
|
||||
}
|
||||
}
|
||||
});
|
||||
|
||||
return diff;
|
||||
|
||||
}
|
||||
|
||||
module.exports = Flow;
|
||||
Reference in New Issue
Block a user