mirror of
https://github.com/node-red/node-red.git
synced 2025-03-01 10:36:34 +00:00
Refactor Subflow logic into own class
This commit is contained in:
Nick O'Leary
@@ -16,33 +16,68 @@
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var when = require("when");
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var clone = require("clone");
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var typeRegistry = require("@node-red/registry");
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var Subflow;
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var Log;
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var redUtil = require("@node-red/util").util;
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var flowUtil = require("./util");
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var events = require("../../events");
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var nodeCloseTimeout = 15000;
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class Flow {
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constructor(global,flow) {
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this.global = global;
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constructor(parent,globalFlow,flow) {
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this.TYPE = 'flow';
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this.parent = parent;
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this.global = globalFlow;
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if (typeof flow === 'undefined') {
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this.flow = global;
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this.flow = globalFlow;
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this.isGlobalFlow = true;
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} else {
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this.flow = flow;
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this.isGlobalFlow = false;
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}
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this.id = this.flow.id || "global";
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this.activeNodes = {};
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this.subflowInstanceNodes = {};
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this.catchNodeMap = {};
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this.statusNodeMap = {};
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this.catchNodes = [];
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this.statusNodes = [];
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}
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debug(msg) {
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Log.log({
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id: this.id||"global",
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level: Log.DEBUG,
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type:this.TYPE,
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msg:msg
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})
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}
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log(msg) {
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Log.log({
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id: this.id||"global",
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level: Log.INFO,
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type:this.TYPE,
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msg:msg
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})
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}
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trace(msg) {
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Log.log({
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id: this.id||"global",
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level: Log.TRACE,
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type:this.TYPE,
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msg:msg
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})
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}
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start(diff) {
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this.trace("start "+this.TYPE);
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var node;
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var newNode;
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var id;
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this.catchNodeMap = {};
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this.statusNodeMap = {};
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this.catchNodes = [];
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this.statusNodes = [];
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var configNodes = Object.keys(this.flow.configs);
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var configNodeAttempts = {};
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@@ -69,7 +104,7 @@ class Flow {
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}
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}
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if (readyToCreate) {
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newNode = createNode(node.type,node);
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newNode = flowUtil.createNode(this,node);
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if (newNode) {
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this.activeNodes[id] = newNode;
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}
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@@ -91,7 +126,7 @@ class Flow {
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node = this.flow.nodes[id];
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if (!node.subflow) {
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if (!this.activeNodes[id]) {
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newNode = createNode(node.type,node);
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newNode = flowUtil.createNode(this,node);
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if (newNode) {
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this.activeNodes[id] = newNode;
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}
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@@ -100,13 +135,24 @@ class Flow {
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if (!this.subflowInstanceNodes[id]) {
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try {
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var subflowDefinition = this.flow.subflows[node.subflow]||this.global.subflows[node.subflow]
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var nodes = createSubflow(subflowDefinition,node,this.flow.subflows,this.global.subflows,this.activeNodes);
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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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if (nodes[i]) {
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this.activeNodes[nodes[i].id] = nodes[i];
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}
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}
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// console.log("NEED TO CREATE A SUBFLOW",id,node.subflow);
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this.subflowInstanceNodes[id] = true;
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var subflow = Subflow.create(
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this,
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this.global,
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subflowDefinition,
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node
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);
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subflow.start();
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this.activeNodes[id] = subflow.node;
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this.subflowInstanceNodes[id] = subflow;
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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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// if (nodes[i]) {
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// this.activeNodes[nodes[i].id] = nodes[i];
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// }
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// }
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} catch(err) {
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console.log(err.stack)
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}
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@@ -115,31 +161,43 @@ class Flow {
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}
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}
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var activeCount = Object.keys(this.activeNodes).length;
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if (activeCount > 0) {
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this.trace("------------------|--------------|-----------------");
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this.trace(" id | type | alias");
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this.trace("------------------|--------------|-----------------");
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}
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// Build the map of catch/status nodes.
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for (id in this.activeNodes) {
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if (this.activeNodes.hasOwnProperty(id)) {
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node = this.activeNodes[id];
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this.trace(" "+id.padEnd(16)+" | "+node.type.padEnd(12)+" | "+(node._alias||""));
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if (node.type === "catch") {
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this.catchNodeMap[node.z] = this.catchNodeMap[node.z] || [];
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this.catchNodeMap[node.z].push(node);
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this.catchNodes.push(node);
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} else if (node.type === "status") {
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this.statusNodeMap[node.z] = this.statusNodeMap[node.z] || [];
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this.statusNodeMap[node.z].push(node);
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this.statusNodes.push(node);
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}
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}
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}
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if (activeCount > 0) {
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this.trace("------------------|--------------|-----------------");
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}
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// this.dump();
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}
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stop(stopList, removedList) {
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return new Promise((resolve,reject) => {
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this.trace("stop "+this.TYPE);
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var i;
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if (stopList) {
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for (i=0;i<stopList.length;i++) {
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if (this.subflowInstanceNodes[stopList[i]]) {
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// The first in the list is the instance node we already
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// know about
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stopList = stopList.concat(this.subflowInstanceNodes[stopList[i]].slice(1))
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}
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}
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// for (i=0;i<stopList.length;i++) {
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// if (this.subflowInstanceNodes[stopList[i]]) {
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// console.log("NEED TO STOP A SUBFLOW",stopList[i]);
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// // The first in the list is the instance node we already
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// // know about
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// // stopList = stopList.concat(this.subflowInstanceNodes[stopList[i]].slice(1))
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// }
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// }
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} else {
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stopList = Object.keys(this.activeNodes);
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}
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@@ -156,34 +214,20 @@ class Flow {
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if (node) {
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delete this.activeNodes[stopList[i]];
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if (this.subflowInstanceNodes[stopList[i]]) {
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try {
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var subflow = this.subflowInstanceNodes[stopList[i]];
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promises.push(this.stopNode(node,false).then(() => { subflow.stop() }));
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} catch(err) {
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node.error(err);
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}
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delete this.subflowInstanceNodes[stopList[i]];
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}
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try {
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var removed = removedMap[stopList[i]];
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promises.push(
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when.promise(function(resolve, reject) {
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var start;
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var nt = node.type;
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var nid = node.id;
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var n = node;
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when.promise(function(resolve) {
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Log.trace("Stopping node "+nt+":"+nid+(removed?" removed":""));
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start = Date.now();
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resolve(n.close(removed));
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}).timeout(nodeCloseTimeout).then(function(){
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var delta = Date.now() - start;
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Log.trace("Stopped node "+nt+":"+nid+" ("+delta+"ms)" );
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resolve(delta);
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},function(err) {
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var delta = Date.now() - start;
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n.error(Log._("nodes.flows.stopping-error",{message:err}));
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Log.debug(err.stack);
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reject(err);
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});
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})
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);
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} catch(err) {
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node.error(err);
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} else {
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try {
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var removed = removedMap[stopList[i]];
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promises.push(this.stopNode(node,removed));
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} catch(err) {
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node.error(err);
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}
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}
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}
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}
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@@ -193,13 +237,46 @@ class Flow {
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});
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}
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stopNode(node,removed) {
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return when.promise(function(resolve, reject) {
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var start;
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when.promise(function(resolve) {
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Log.trace("Stopping node "+node.type+":"+node.id+(removed?" removed":""));
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start = Date.now();
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resolve(node.close(removed));
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}).timeout(nodeCloseTimeout).then(function(){
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var delta = Date.now() - start;
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Log.trace("Stopped node "+node.type+":"+node.id+" ("+delta+"ms)" );
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resolve(delta);
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},function(err) {
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var delta = Date.now() - start;
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node.error(Log._("nodes.flows.stopping-error",{message:err}));
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Log.debug(err.stack);
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reject(err);
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});
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})
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}
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update(_global,_flow) {
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this.global = _global;
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this.flow = _flow;
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}
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getNode(id) {
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return this.activeNodes[id];
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// console.log('getNode',id,!!this.activeNodes[id])
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if (!id) {
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return undefined;
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}
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// console.log((new Error().stack).toString().split("\n").slice(1,3).join("\n"))
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if ((this.flow.configs && this.flow.configs[id]) || (this.flow.nodes && this.flow.nodes[id])) {
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// This is a node owned by this flow, so return whatever we have got
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// During a stop/restart, activeNodes could be null for this id
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return this.activeNodes[id];
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} else if (this.activeNodes[id]) {
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// TEMP: this is a subflow internal node within this flow
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return this.activeNodes[id];
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}
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return this.parent.getNode(id);
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}
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getActiveNodes() {
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@@ -207,40 +284,40 @@ class Flow {
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}
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handleStatus(node,statusMessage) {
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var targetStatusNodes = null;
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var reportingNode = node;
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events.emit("node-status",{
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id: node.id,
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status:statusMessage
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});
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var handled = false;
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while (reportingNode && !handled) {
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targetStatusNodes = this.statusNodeMap[reportingNode.z];
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if (targetStatusNodes) {
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targetStatusNodes.forEach(function(targetStatusNode) {
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if (targetStatusNode.scope && targetStatusNode.scope.indexOf(node.id) === -1) {
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return;
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}
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var message = {
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status: {
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text: "",
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source: {
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id: node.id,
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type: node.type,
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name: node.name
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}
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}
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};
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if (statusMessage.hasOwnProperty("text")) {
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message.status.text = statusMessage.text.toString();
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}
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targetStatusNode.receive(message);
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handled = true;
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});
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this.statusNodes.forEach(function(targetStatusNode) {
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if (targetStatusNode.scope && targetStatusNode.scope.indexOf(node.id) === -1) {
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return;
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}
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if (!handled) {
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reportingNode = this.activeNodes[reportingNode.z];
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var message = {
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status: {
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text: "",
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source: {
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id: node.id,
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type: node.type,
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name: node.name
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}
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}
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};
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if (statusMessage.hasOwnProperty("text")) {
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message.status.text = statusMessage.text.toString();
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}
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targetStatusNode.receive(message);
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handled = true;
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});
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if (!handled) {
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// // Nothing in this flow handled the status - pass it to the parent
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this.parent.handleStatus(node,statusMessage);
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}
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}
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handleError(node,logMessage,msg) {
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// console.log("HE",logMessage);
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var count = 1;
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if (msg && msg.hasOwnProperty("error") && msg.error !== null) {
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if (msg.error.hasOwnProperty("source") && msg.error.source !== null) {
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@@ -253,268 +330,67 @@ class Flow {
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}
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}
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}
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var targetCatchNodes = null;
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var throwingNode = node;
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var handled = false;
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while (throwingNode && !handled) {
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targetCatchNodes = this.catchNodeMap[throwingNode.z];
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if (targetCatchNodes) {
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targetCatchNodes.forEach(function(targetCatchNode) {
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if (targetCatchNode.scope && targetCatchNode.scope.indexOf(throwingNode.id) === -1) {
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return;
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}
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var errorMessage;
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if (msg) {
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errorMessage = redUtil.cloneMessage(msg);
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} else {
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errorMessage = {};
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}
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if (errorMessage.hasOwnProperty("error")) {
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errorMessage._error = errorMessage.error;
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}
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errorMessage.error = {
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message: logMessage.toString(),
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source: {
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id: node.id,
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type: node.type,
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name: node.name,
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count: count
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}
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};
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if (logMessage.hasOwnProperty('stack')) {
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errorMessage.error.stack = logMessage.stack;
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}
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targetCatchNode.receive(errorMessage);
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handled = true;
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});
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this.catchNodes.forEach(function(targetCatchNode) {
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if (targetCatchNode.scope && targetCatchNode.scope.indexOf(node.id) === -1) {
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return;
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}
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if (!handled) {
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throwingNode = this.activeNodes[throwingNode.z];
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var errorMessage;
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if (msg) {
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errorMessage = redUtil.cloneMessage(msg);
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} else {
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errorMessage = {};
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}
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if (errorMessage.hasOwnProperty("error")) {
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errorMessage._error = errorMessage.error;
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}
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errorMessage.error = {
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message: logMessage.toString(),
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source: {
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id: node.id,
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type: node.type,
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name: node.name,
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count: count
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}
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};
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if (logMessage.hasOwnProperty('stack')) {
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errorMessage.error.stack = logMessage.stack;
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}
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targetCatchNode.receive(errorMessage);
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handled = true;
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});
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if (!handled) {
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// Nothing in this flow handled the error - pass it to the parent
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handled = this.parent.handleError(node,logMessage);
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}
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return handled;
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}
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dump() {
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console.log("==================")
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console.log(this.TYPE, this.id);
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for (var id in this.activeNodes) {
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if (this.activeNodes.hasOwnProperty(id)) {
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var node = this.activeNodes[id];
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console.log(" ",id.padEnd(16),node.type)
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if (node.wires) {
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console.log(" -> ",node.wires)
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}
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}
|
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}
|
||||
console.log("==================")
|
||||
}
|
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}
|
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|
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/**
|
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* Create a new instance of a node
|
||||
* @param {string} type The node type string
|
||||
* @param {object} config The node configuration object
|
||||
* @return {Node} The instance of the node
|
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*/
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||||
function createNode(type,config) {
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||||
var newNode = null;
|
||||
try {
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||||
var nodeTypeConstructor = typeRegistry.get(type);
|
||||
if (nodeTypeConstructor) {
|
||||
var conf = clone(config);
|
||||
delete conf.credentials;
|
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for (var p in conf) {
|
||||
if (conf.hasOwnProperty(p)) {
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flowUtil.mapEnvVarProperties(conf,p);
|
||||
}
|
||||
}
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||||
try {
|
||||
newNode = new nodeTypeConstructor(conf);
|
||||
} catch (err) {
|
||||
Log.log({
|
||||
level: Log.ERROR,
|
||||
id:conf.id,
|
||||
type: type,
|
||||
msg: err
|
||||
});
|
||||
}
|
||||
} else {
|
||||
Log.error(Log._("nodes.flow.unknown-type", {type:type}));
|
||||
}
|
||||
} catch(err) {
|
||||
Log.error(err);
|
||||
}
|
||||
return newNode;
|
||||
}
|
||||
|
||||
function createSubflow(sf,sfn,subflows,globalSubflows,activeNodes) {
|
||||
//console.log("CREATE SUBFLOW",sf.id,sfn.id);
|
||||
var nodes = [];
|
||||
var node_map = {};
|
||||
var newNodes = [];
|
||||
var node;
|
||||
var wires;
|
||||
var i,j,k;
|
||||
|
||||
var createNodeInSubflow = function(def) {
|
||||
node = clone(def);
|
||||
var nid = redUtil.generateId();
|
||||
node_map[node.id] = node;
|
||||
node._alias = node.id;
|
||||
node.id = nid;
|
||||
node.z = sfn.id;
|
||||
newNodes.push(node);
|
||||
}
|
||||
|
||||
// Clone all of the subflow config node definitions and give them new IDs
|
||||
for (i in sf.configs) {
|
||||
if (sf.configs.hasOwnProperty(i)) {
|
||||
createNodeInSubflow(sf.configs[i]);
|
||||
}
|
||||
}
|
||||
// Clone all of the subflow node definitions and give them new IDs
|
||||
for (i in sf.nodes) {
|
||||
if (sf.nodes.hasOwnProperty(i)) {
|
||||
createNodeInSubflow(sf.nodes[i]);
|
||||
}
|
||||
}
|
||||
|
||||
// Look for any catch/status nodes and update their scope ids
|
||||
// Update all subflow interior wiring to reflect new node IDs
|
||||
for (i=0;i<newNodes.length;i++) {
|
||||
node = newNodes[i];
|
||||
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] = node_map[outputs[j][k]].id
|
||||
}
|
||||
}
|
||||
if ((node.type === 'catch' || node.type === 'status') && node.scope) {
|
||||
node.scope = node.scope.map(function(id) {
|
||||
return node_map[id]?node_map[id].id:""
|
||||
})
|
||||
} else {
|
||||
for (var prop in node) {
|
||||
if (node.hasOwnProperty(prop) && prop !== '_alias') {
|
||||
if (node_map[node[prop]]) {
|
||||
//console.log("Mapped",node.type,node.id,prop,node_map[node[prop]].id);
|
||||
node[prop] = node_map[node[prop]].id;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Create a subflow node to accept inbound messages and route appropriately
|
||||
var Node = require("../Node");
|
||||
var subflowInstance = {
|
||||
id: sfn.id,
|
||||
type: sfn.type,
|
||||
z: sfn.z,
|
||||
name: sfn.name,
|
||||
wires: []
|
||||
}
|
||||
if (sf.in) {
|
||||
subflowInstance.wires = sf.in.map(function(n) { return n.wires.map(function(w) { return node_map[w.id].id;})})
|
||||
subflowInstance._originalWires = clone(subflowInstance.wires);
|
||||
}
|
||||
var subflowNode = new Node(subflowInstance);
|
||||
|
||||
subflowNode.on("input", function(msg) { this.send(msg);});
|
||||
|
||||
|
||||
subflowNode._updateWires = subflowNode.updateWires;
|
||||
|
||||
subflowNode.updateWires = function(newWires) {
|
||||
// Wire the subflow outputs
|
||||
if (sf.out) {
|
||||
var node,wires,i,j;
|
||||
// Restore the original wiring to the internal nodes
|
||||
subflowInstance.wires = clone(subflowInstance._originalWires);
|
||||
for (i=0;i<sf.out.length;i++) {
|
||||
wires = sf.out[i].wires;
|
||||
for (j=0;j<wires.length;j++) {
|
||||
if (wires[j].id != sf.id) {
|
||||
node = node_map[wires[j].id];
|
||||
if (node._originalWires) {
|
||||
node.wires = clone(node._originalWires);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
var modifiedNodes = {};
|
||||
var subflowInstanceModified = false;
|
||||
|
||||
for (i=0;i<sf.out.length;i++) {
|
||||
wires = sf.out[i].wires;
|
||||
for (j=0;j<wires.length;j++) {
|
||||
if (wires[j].id === sf.id) {
|
||||
subflowInstance.wires[wires[j].port] = subflowInstance.wires[wires[j].port].concat(newWires[i]);
|
||||
subflowInstanceModified = true;
|
||||
} else {
|
||||
node = 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];
|
||||
subflowNode.instanceNodes[id].updateWires(node.wires);
|
||||
});
|
||||
if (subflowInstanceModified) {
|
||||
subflowNode._updateWires(subflowInstance.wires);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
nodes.push(subflowNode);
|
||||
|
||||
// Wire the subflow outputs
|
||||
if (sf.out) {
|
||||
var modifiedNodes = {};
|
||||
for (i=0;i<sf.out.length;i++) {
|
||||
wires = sf.out[i].wires;
|
||||
for (j=0;j<wires.length;j++) {
|
||||
if (wires[j].id === sf.id) {
|
||||
// A subflow input wired straight to a subflow output
|
||||
subflowInstance.wires[wires[j].port] = subflowInstance.wires[wires[j].port].concat(sfn.wires[i])
|
||||
subflowNode._updateWires(subflowInstance.wires);
|
||||
} else {
|
||||
node = 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(sfn.wires[i]);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Instantiate the nodes
|
||||
for (i=0;i<newNodes.length;i++) {
|
||||
node = newNodes[i];
|
||||
var type = node.type;
|
||||
|
||||
var m = /^subflow:(.+)$/.exec(type);
|
||||
if (!m) {
|
||||
var newNode = createNode(type,node);
|
||||
if (newNode) {
|
||||
activeNodes[node.id] = newNode;
|
||||
nodes.push(newNode);
|
||||
}
|
||||
} else {
|
||||
var subflowId = m[1];
|
||||
nodes = nodes.concat(createSubflow(subflows[subflowId]||globalSubflows[subflowId],node,subflows,globalSubflows,activeNodes));
|
||||
}
|
||||
}
|
||||
|
||||
subflowNode.instanceNodes = {};
|
||||
|
||||
nodes.forEach(function(node) {
|
||||
subflowNode.instanceNodes[node.id] = node;
|
||||
});
|
||||
return nodes;
|
||||
}
|
||||
|
||||
|
||||
module.exports = {
|
||||
init: function(runtime) {
|
||||
nodeCloseTimeout = runtime.settings.nodeCloseTimeout || 15000;
|
||||
Log = runtime.log;
|
||||
Subflow = require("./Subflow");
|
||||
Subflow.init(runtime);
|
||||
},
|
||||
create: function(global,conf) {
|
||||
return new Flow(global,conf);
|
||||
}
|
||||
create: function(parent,global,conf) {
|
||||
return new Flow(parent,global,conf);
|
||||
},
|
||||
Flow: Flow
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user