mirror of
https://github.com/node-red/node-red.git
synced 2023-10-10 13:36:53 +02:00
693 lines
27 KiB
JavaScript
693 lines
27 KiB
JavaScript
/**
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* Copyright JS Foundation and other contributors, http://js.foundation
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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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const clone = require("clone");
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const redUtil = require("@node-red/util").util;
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const Log = require("@node-red/util").log;
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const typeRegistry = require("@node-red/registry");
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const subflowInstanceRE = /^subflow:(.+)$/;
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let _runtime = null;
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let envVarExcludes = {};
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function init(runtime) {
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_runtime = runtime;
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envVarExcludes = {};
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if (runtime.settings.hasOwnProperty('envVarExcludes') && Array.isArray(runtime.settings.envVarExcludes)) {
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runtime.settings.envVarExcludes.forEach(v => envVarExcludes[v] = true);
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}
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}
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function diffNodes(oldNode,newNode) {
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if (oldNode == null) {
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return true;
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}
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const keyFilter = p => p != 'x' && p != 'y' && p != 'wires'
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const groupKeyFilter = p => keyFilter(p) && p != 'nodes' && p != 'style' && p != 'w' && p != 'h'
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var oldKeys = Object.keys(oldNode).filter(oldNode.type === 'group' ? groupKeyFilter : keyFilter);
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var newKeys = Object.keys(newNode).filter(newNode.type === 'group' ? groupKeyFilter : keyFilter);
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if (oldKeys.length != newKeys.length) {
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return true;
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}
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for (var i=0;i<newKeys.length;i++) {
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var p = newKeys[i];
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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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return false;
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}
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var EnvVarPropertyRE_old = /^\$\((\S+)\)$/;
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var EnvVarPropertyRE = /^\${(\S+)}$/;
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function mapEnvVarProperties(obj,prop,flow,config) {
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var v = obj[prop];
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if (Buffer.isBuffer(v)) {
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return;
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} else if (Array.isArray(v)) {
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for (var i=0;i<v.length;i++) {
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mapEnvVarProperties(v,i,flow,config);
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}
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} else if (typeof obj[prop] === 'string') {
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if (obj[prop][0] === "$" && (EnvVarPropertyRE_old.test(v) || EnvVarPropertyRE.test(v)) ) {
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var envVar = v.substring(2,v.length-1);
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var r = redUtil.getSetting(config, envVar, flow);
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obj[prop] = r ? r : obj[prop];
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}
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} else {
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for (var p in v) {
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if (v.hasOwnProperty(p)) {
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mapEnvVarProperties(v,p,flow,config);
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}
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}
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}
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}
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async function evaluateEnvProperties(flow, env, credentials) {
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const pendingEvaluations = []
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const evaluatedEnv = {}
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const envTypes = []
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for (let i = 0; i < env.length; i++) {
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let { name, value, type } = env[i]
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if (type === "env") {
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// Do env types last as they may include references to other env vars
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// at this level which need to be resolved before they can be looked-up
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envTypes.push(env[i])
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} else if (type === "bool") {
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value = (value === "true") || (value === true);
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} else if (type === "cred") {
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if (credentials.hasOwnProperty(name)) {
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value = credentials[name];
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}
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} else if (type ==='jsonata') {
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pendingEvaluations.push(new Promise((resolve, _) => {
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redUtil.evaluateNodeProperty(value, 'jsonata', {_flow: flow}, null, (err, result) => {
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if (!err) {
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evaluatedEnv[name] = result
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}
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resolve()
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});
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}))
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} else {
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value = redUtil.evaluateNodeProperty(value, type, {_flow: flow}, null, null);
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}
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evaluatedEnv[name] = value
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}
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if (pendingEvaluations.length > 0) {
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await Promise.all(pendingEvaluations)
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}
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// Now loop over the env types and evaluate them properly
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for (let i = 0; i < envTypes.length; i++) {
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let { name, value, type } = envTypes[i]
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// If an env-var wants to lookup itself, delegate straight to the parent
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// https://github.com/node-red/node-red/issues/2099
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if (value === name) {
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value = `$parent.${name}`
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}
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if (evaluatedEnv.hasOwnProperty(value)) {
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value = evaluatedEnv[value]
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} else {
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value = redUtil.evaluateNodeProperty(value, type, {_flow: {
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// Provide a hook so when it tries to look up a flow setting,
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// we can insert the just-evaluated value which hasn't yet
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// been set on the flow object - otherwise delegate up to the flow
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getSetting: function(name) {
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if (evaluatedEnv.hasOwnProperty(name)){
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return evaluatedEnv[name]
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}
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return flow.getSetting(name)
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}
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}}, null, null);
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}
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evaluatedEnv[name] = value
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}
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return evaluatedEnv
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}
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/**
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* Create a new instance of a node
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* @param {Flow} flow The containing flow
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* @param {object} config The node configuration object
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* @return {Node} The instance of the node
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*/
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async function createNode(flow,config) {
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var newNode = null;
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var type = config.type;
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try {
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var nodeTypeConstructor = typeRegistry.get(type);
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if (typeof nodeTypeConstructor === "function") {
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var conf = clone(config);
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delete conf.credentials;
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try {
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Object.defineProperty(conf,'_module', {value: typeRegistry.getNodeInfo(type), enumerable: false, writable: true })
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Object.defineProperty(conf,'_flow', {value: flow, enumerable: false, writable: true })
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Object.defineProperty(conf,'_path', {value: `${flow.path}/${config._alias||config.id}`, enumerable: false, writable: true })
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for (var p in conf) {
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if (conf.hasOwnProperty(p)) {
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mapEnvVarProperties(conf,p,flow,conf);
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}
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}
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newNode = new nodeTypeConstructor(conf);
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} catch (err) {
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Log.log({
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level: Log.ERROR,
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id:conf.id,
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type: type,
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msg: err
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});
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}
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} else if (nodeTypeConstructor) {
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// console.log(nodeTypeConstructor)
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var subflowConfig = parseConfig([nodeTypeConstructor.subflow].concat(nodeTypeConstructor.subflow.flow));
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var subflowInstanceConfig = subflowConfig.subflows[nodeTypeConstructor.subflow.id];
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delete subflowConfig.subflows[nodeTypeConstructor.subflow.id];
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subflowInstanceConfig.subflows = subflowConfig.subflows;
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var instanceConfig = clone(config);
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instanceConfig.env = clone(nodeTypeConstructor.subflow.env);
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instanceConfig.env = nodeTypeConstructor.subflow.env.map(nodeProp => {
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var nodePropType;
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var nodePropValue = config[nodeProp.name];
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if (nodeProp.type === "cred") {
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nodePropType = "cred";
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} else {
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switch(typeof config[nodeProp.name]) {
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case "string": nodePropType = "str"; break;
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case "number": nodePropType = "num"; break;
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case "boolean": nodePropType = "bool"; nodePropValue == nodeProp?"true":"false"; break;
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default:
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nodePropType = config[nodeProp.name].type;
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nodePropValue = config[nodeProp.name].value;
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}
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}
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return {
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name: nodeProp.name,
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type: nodePropType,
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value: nodePropValue
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}
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})
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var subflow = require("./Subflow").createModuleInstance(
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nodeTypeConstructor.type,
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flow,
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flow.global,
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subflowInstanceConfig,
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instanceConfig
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);
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// Register this subflow as an instance node of the parent flow.
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// This allows nodes inside the subflow to get ahold of each other
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// such as a node accessing its config node
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flow.subflowInstanceNodes[config.id] = subflow
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await subflow.start();
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return subflow.node;
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}
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} catch(err) {
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Log.error(err);
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}
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return newNode;
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}
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function parseConfig(config) {
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var flow = {};
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flow.allNodes = {};
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flow.subflows = {};
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flow.configs = {};
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flow.flows = {};
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flow.missingTypes = [];
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config.forEach(function (n) {
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flow.allNodes[n.id] = clone(n);
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if (n.type === 'tab') {
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flow.flows[n.id] = n;
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flow.flows[n.id].subflows = {};
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flow.flows[n.id].configs = {};
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flow.flows[n.id].nodes = {};
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flow.flows[n.id].groups = {};
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} else if (n.type === 'subflow') {
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flow.subflows[n.id] = n;
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flow.subflows[n.id].configs = {};
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flow.subflows[n.id].nodes = {};
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flow.subflows[n.id].groups = {};
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flow.subflows[n.id].instances = [];
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}
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});
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var linkWires = {};
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var linkOutNodes = [];
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config.forEach(function (n) {
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if (n.type !== 'subflow' && n.type !== 'tab' && n.type !== 'group') {
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var subflowDetails = subflowInstanceRE.exec(n.type);
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if ((subflowDetails && !flow.subflows[subflowDetails[1]]) || (!subflowDetails && !typeRegistry.get(n.type))) {
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if (flow.missingTypes.indexOf(n.type) === -1) {
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flow.missingTypes.push(n.type);
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}
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}
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var container = null;
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if (flow.flows[n.z]) {
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container = flow.flows[n.z];
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} else if (flow.subflows[n.z]) {
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container = flow.subflows[n.z];
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}
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if (n.hasOwnProperty('x') && n.hasOwnProperty('y')) {
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if (subflowDetails) {
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var subflowType = subflowDetails[1]
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n.subflow = subflowType;
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if (flow.subflows[subflowType]) {
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flow.subflows[subflowType].instances.push(n)
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}
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}
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if (container) {
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container.nodes[n.id] = n;
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}
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} else {
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if (container) {
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container.configs[n.id] = n;
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} else {
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flow.configs[n.id] = n;
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flow.configs[n.id]._users = [];
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}
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}
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if (n.type === 'link in' && n.links) {
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// Ensure wires are present in corresponding link out nodes
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n.links.forEach(function (id) {
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linkWires[id] = linkWires[id] || {};
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linkWires[id][n.id] = true;
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})
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} else if (n.type === 'link out' && n.links) {
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linkWires[n.id] = linkWires[n.id] || {};
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n.links.forEach(function (id) {
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linkWires[n.id][id] = true;
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})
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linkOutNodes.push(n);
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}
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} else if (n.type === 'group') {
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const parentContainer = flow.flows[n.z] || flow.subflows[n.z]
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if (parentContainer) {
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parentContainer.groups[n.id] = n
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}
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}
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});
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linkOutNodes.forEach(function (n) {
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var links = linkWires[n.id];
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var targets = Object.keys(links);
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n.wires = [targets];
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});
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var addedTabs = {};
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config.forEach(function (n) {
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if (n.type !== 'subflow' && n.type !== 'tab' && n.type !== 'group') {
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for (var prop in n) {
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if (n.hasOwnProperty(prop) && prop !== 'id' && prop !== 'wires' && prop !== 'type' && prop !== '_users' && flow.configs.hasOwnProperty(n[prop])) {
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// This property references a global config node
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flow.configs[n[prop]]._users.push(n.id)
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}
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}
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if (n.z && !flow.subflows[n.z]) {
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if (!flow.flows[n.z]) {
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flow.flows[n.z] = { type: 'tab', id: n.z };
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flow.flows[n.z].subflows = {};
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flow.flows[n.z].configs = {};
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flow.flows[n.z].nodes = {};
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addedTabs[n.z] = flow.flows[n.z];
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}
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if (addedTabs[n.z]) {
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if (n.hasOwnProperty('x') && n.hasOwnProperty('y')) {
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addedTabs[n.z].nodes[n.id] = n;
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} else {
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addedTabs[n.z].configs[n.id] = n;
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}
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}
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}
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}
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});
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return flow;
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}
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function getEnvVar(k) {
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if (!envVarExcludes[k]) {
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return process.env[k];
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}
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return undefined;
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}
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function diffConfigs(oldConfig, newConfig) {
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var id;
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var node;
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var nn;
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var wires;
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var j,k;
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if (!oldConfig) {
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oldConfig = {
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flows:{},
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allNodes:{}
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}
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}
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var changedSubflows = {};
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var added = {};
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var removed = {};
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var changed = {};
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var flowChanged = {};
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var wiringChanged = {};
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var globalConfigChanged = false;
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var linkMap = {};
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var allNestedGroups = []
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// Look for tabs that have been removed
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for (id in oldConfig.flows) {
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if (oldConfig.flows.hasOwnProperty(id) && (!newConfig.flows.hasOwnProperty(id))) {
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removed[id] = oldConfig.allNodes[id];
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}
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}
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// Look for tabs that have been disabled
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for (id in oldConfig.flows) {
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if (oldConfig.flows.hasOwnProperty(id) && newConfig.flows.hasOwnProperty(id)) {
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var originalState = oldConfig.flows[id].disabled||false;
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var newState = newConfig.flows[id].disabled||false;
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if (originalState !== newState) {
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if (originalState) {
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added[id] = oldConfig.allNodes[id];
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} else {
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removed[id] = oldConfig.allNodes[id];
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}
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}
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}
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}
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for (id in oldConfig.allNodes) {
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if (oldConfig.allNodes.hasOwnProperty(id)) {
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node = oldConfig.allNodes[id];
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if (node.type !== 'tab') {
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// build the map of what this node was previously wired to
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if (node.wires) {
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linkMap[node.id] = linkMap[node.id] || [];
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for (j=0;j<node.wires.length;j++) {
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wires = node.wires[j];
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for (k=0;k<wires.length;k++) {
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linkMap[node.id].push(wires[k]);
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nn = oldConfig.allNodes[wires[k]];
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if (nn) {
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linkMap[nn.id] = linkMap[nn.id] || [];
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linkMap[nn.id].push(node.id);
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}
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}
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}
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}
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// This node has been removed or its flow disabled
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if (removed[node.z] || !newConfig.allNodes.hasOwnProperty(id)) {
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removed[id] = node;
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// Mark the container as changed
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if (!removed[node.z] && newConfig.allNodes[removed[id].z]) {
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changed[removed[id].z] = newConfig.allNodes[removed[id].z];
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if (changed[removed[id].z].type === "subflow") {
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changedSubflows[removed[id].z] = changed[removed[id].z];
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//delete removed[id];
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}
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}
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} else {
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if (added[node.z]) {
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added[id] = node;
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} else {
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var currentState = node.d;
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var newState = newConfig.allNodes[id].d;
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if (!currentState && newState) {
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removed[id] = node;
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}
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// This node has a material configuration change
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if (diffNodes(node,newConfig.allNodes[id]) || newConfig.allNodes[id].credentials) {
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changed[id] = newConfig.allNodes[id];
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if (changed[id].type === "subflow") {
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changedSubflows[id] = changed[id];
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}
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// Mark the container as changed
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if (newConfig.allNodes[changed[id].z]) {
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changed[changed[id].z] = newConfig.allNodes[changed[id].z];
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if (changed[changed[id].z].type === "subflow") {
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changedSubflows[changed[id].z] = changed[changed[id].z];
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delete changed[id];
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}
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}
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if (newConfig.allNodes[id].type === 'global-config') {
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globalConfigChanged = true
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}
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}
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// This node's wiring has changed
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if (!redUtil.compareObjects(node.wires,newConfig.allNodes[id].wires)) {
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wiringChanged[id] = newConfig.allNodes[id];
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// Mark the container as changed
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if (newConfig.allNodes[wiringChanged[id].z]) {
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changed[wiringChanged[id].z] = newConfig.allNodes[wiringChanged[id].z];
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if (changed[wiringChanged[id].z].type === "subflow") {
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changedSubflows[wiringChanged[id].z] = changed[wiringChanged[id].z];
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delete wiringChanged[id];
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}
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}
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}
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}
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}
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} else if (!removed[id]) {
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if (JSON.stringify(node.env) !== JSON.stringify(newConfig.allNodes[id].env)) {
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flowChanged[id] = newConfig.allNodes[id];
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}
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}
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}
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}
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// Look for added nodes
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for (id in newConfig.allNodes) {
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if (newConfig.allNodes.hasOwnProperty(id)) {
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node = newConfig.allNodes[id];
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if (node.type === 'group') {
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if (node.g) {
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allNestedGroups.push(node)
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}
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if (changed[node.id]) {
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if (node.nodes) {
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node.nodes.forEach(nid => {
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if (!changed[nid]) {
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changed[nid] = true
|
|
}
|
|
})
|
|
}
|
|
}
|
|
}
|
|
// build the map of what this node is now wired to
|
|
if (node.wires) {
|
|
linkMap[node.id] = linkMap[node.id] || [];
|
|
for (j=0;j<node.wires.length;j++) {
|
|
wires = node.wires[j];
|
|
for (k=0;k<wires.length;k++) {
|
|
if (linkMap[node.id].indexOf(wires[k]) === -1) {
|
|
linkMap[node.id].push(wires[k]);
|
|
}
|
|
nn = newConfig.allNodes[wires[k]];
|
|
if (nn) {
|
|
linkMap[nn.id] = linkMap[nn.id] || [];
|
|
if (linkMap[nn.id].indexOf(node.id) === -1) {
|
|
linkMap[nn.id].push(node.id);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
// This node has been added
|
|
if (!oldConfig.allNodes.hasOwnProperty(id)) {
|
|
added[id] = node;
|
|
// Mark the container as changed
|
|
if (newConfig.allNodes[added[id].z]) {
|
|
changed[added[id].z] = newConfig.allNodes[added[id].z];
|
|
if (changed[added[id].z].type === "subflow") {
|
|
changedSubflows[added[id].z] = changed[added[id].z];
|
|
delete added[id];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
var madeChange;
|
|
// Loop through the nodes looking for references to changed config nodes
|
|
// Repeat the loop if anything is marked as changed as it may need to be
|
|
// propagated to parent nodes.
|
|
// TODO: looping through all nodes every time is a bit inefficient - could be more targeted
|
|
do {
|
|
madeChange = false;
|
|
for (id in newConfig.allNodes) {
|
|
if (newConfig.allNodes.hasOwnProperty(id)) {
|
|
node = newConfig.allNodes[id];
|
|
for (var prop in node) {
|
|
if (node.hasOwnProperty(prop) && prop != "z" && prop != "id" && prop != "wires") {
|
|
// This node has a property that references a changed/removed node
|
|
// Assume it is a config node change and mark this node as
|
|
// changed.
|
|
|
|
var changeOrigin = changed[node[prop]];
|
|
if (changeOrigin || removed[node[prop]]) {
|
|
if (!changed[node.id]) {
|
|
if (changeOrigin &&
|
|
(prop === "g") &&
|
|
(changeOrigin.type === "group")) {
|
|
var oldNode = oldConfig.allNodes[node.id];
|
|
// ignore change of group node
|
|
// if group of this node not changed
|
|
if (oldNode &&
|
|
(node.g === oldNode.g)) {
|
|
continue;
|
|
}
|
|
}
|
|
madeChange = true;
|
|
changed[node.id] = node;
|
|
// This node exists within subflow template
|
|
// Mark the template as having changed
|
|
if (newConfig.allNodes[node.z]) {
|
|
changed[node.z] = newConfig.allNodes[node.z];
|
|
if (changed[node.z].type === "subflow") {
|
|
changedSubflows[node.z] = changed[node.z];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
} while (madeChange===true)
|
|
|
|
// Find any nodes that exist on a subflow template and remove from changed
|
|
// list as the parent subflow will now be marked as containing a change
|
|
for (id in newConfig.allNodes) {
|
|
if (newConfig.allNodes.hasOwnProperty(id)) {
|
|
node = newConfig.allNodes[id];
|
|
if (newConfig.allNodes[node.z] && newConfig.allNodes[node.z].type === "subflow") {
|
|
delete changed[node.id];
|
|
}
|
|
}
|
|
}
|
|
|
|
// Recursively mark all children of changed groups as changed
|
|
do {
|
|
madeChange = false
|
|
for (let i = 0; i < allNestedGroups.length; i++) {
|
|
const group = allNestedGroups[i]
|
|
if (!changed[group.id] && group.g && changed[group.g]) {
|
|
changed[group.id] = true
|
|
madeChange = true
|
|
}
|
|
if (changed[group.id] && group.nodes) {
|
|
group.nodes.forEach(nid => {
|
|
if (!changed[nid]) {
|
|
changed[nid] = true
|
|
madeChange = true
|
|
}
|
|
})
|
|
}
|
|
}
|
|
} while(madeChange)
|
|
|
|
// Recursively mark all instances of changed subflows as changed
|
|
var changedSubflowStack = Object.keys(changedSubflows);
|
|
while (changedSubflowStack.length > 0) {
|
|
var subflowId = changedSubflowStack.pop();
|
|
for (id in newConfig.allNodes) {
|
|
if (newConfig.allNodes.hasOwnProperty(id)) {
|
|
node = newConfig.allNodes[id];
|
|
if (node.type === 'subflow:'+subflowId) {
|
|
if (!changed[node.id]) {
|
|
changed[node.id] = node;
|
|
if (!changed[changed[node.id].z] && newConfig.allNodes[changed[node.id].z]) {
|
|
changed[changed[node.id].z] = newConfig.allNodes[changed[node.id].z];
|
|
if (newConfig.allNodes[changed[node.id].z].type === "subflow") {
|
|
// This subflow instance is inside a subflow. Add the
|
|
// containing subflow to the stack to mark
|
|
changedSubflowStack.push(changed[node.id].z);
|
|
delete changed[node.id];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
|
|
var diff = {
|
|
added:Object.keys(added),
|
|
changed:Object.keys(changed),
|
|
removed:Object.keys(removed),
|
|
rewired:Object.keys(wiringChanged),
|
|
linked:[],
|
|
flowChanged: Object.keys(flowChanged),
|
|
globalConfigChanged
|
|
}
|
|
|
|
// Traverse the links of all modified nodes to mark the connected nodes
|
|
var modifiedNodes = diff.added.concat(diff.changed).concat(diff.removed).concat(diff.rewired);
|
|
var visited = {};
|
|
while (modifiedNodes.length > 0) {
|
|
node = modifiedNodes.pop();
|
|
if (!visited[node]) {
|
|
visited[node] = true;
|
|
if (linkMap[node]) {
|
|
if (!changed[node] && !added[node] && !removed[node] && !wiringChanged[node]) {
|
|
diff.linked.push(node);
|
|
}
|
|
modifiedNodes = modifiedNodes.concat(linkMap[node]);
|
|
}
|
|
}
|
|
}
|
|
// console.log(diff);
|
|
// for (id in newConfig.allNodes) {
|
|
// if (added[id] || changed[id] || wiringChanged[id] || diff.linked.indexOf(id)!==-1) {
|
|
// console.log(
|
|
// (added[id]?"a":(changed[id]?"c":" "))+(wiringChanged[id]?"w":" ")+(diff.linked.indexOf(id)!==-1?"l":" "),
|
|
// newConfig.allNodes[id].type.padEnd(10),
|
|
// id.padEnd(16),
|
|
// (newConfig.allNodes[id].z||"").padEnd(16),
|
|
// newConfig.allNodes[id].name||newConfig.allNodes[id].label||""
|
|
// );
|
|
// }
|
|
// }
|
|
// for (id in removed) {
|
|
// console.log(
|
|
// "- "+(diff.linked.indexOf(id)!==-1?"~":" "),
|
|
// id,
|
|
// oldConfig.allNodes[id].type,
|
|
// oldConfig.allNodes[id].name||oldConfig.allNodes[id].label||""
|
|
// );
|
|
// }
|
|
|
|
return diff;
|
|
}
|
|
|
|
module.exports = {
|
|
init,
|
|
createNode,
|
|
parseConfig,
|
|
diffConfigs,
|
|
diffNodes,
|
|
getEnvVar,
|
|
mapEnvVarProperties,
|
|
evaluateEnvProperties
|
|
}
|