mirror of https://github.com/node-red/node-red.git
826 lines
26 KiB
JavaScript
826 lines
26 KiB
JavaScript
/**
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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 whenNode = require('when/node');
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var fs = require("fs");
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var path = require("path");
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var crypto = require("crypto");
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var UglifyJS = require("uglify-js");
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var events = require("../events");
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var Node;
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var settings;
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function filterNodeInfo(n) {
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var r = {
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id: n.id,
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name: n.name,
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types: n.types,
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enabled: n.enabled
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};
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if (n.hasOwnProperty("loaded")) {
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r.loaded = n.loaded;
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}
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if (n.hasOwnProperty("module")) {
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r.module = n.module;
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}
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if (n.hasOwnProperty("err")) {
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r.err = n.err.toString();
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}
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return r;
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}
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function getModule(id) {
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return id.split("/")[0];
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}
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function getNode(id) {
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return id.split("/")[1];
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}
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var registry = (function() {
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var nodeConfigCache = null;
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var moduleConfigs = {};
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var nodeList = [];
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var nodeConstructors = {};
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var nodeTypeToId = {};
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var moduleNodes = {};
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function saveNodeList() {
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var moduleList = {};
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for (var module in moduleConfigs) {
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if (moduleConfigs.hasOwnProperty(module)) {
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if (!moduleList[module]) {
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moduleList[module] = {
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name: module,
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version: moduleConfigs[module].version,
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nodes: {}
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};
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}
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var nodes = moduleConfigs[module].nodes;
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for(var node in nodes) {
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if (nodes.hasOwnProperty(node)) {
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var config = nodes[node];
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var n = filterNodeInfo(config);
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delete n.loaded;
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delete n.err;
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delete n.file;
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delete n.id;
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moduleList[module].nodes[node] = n;
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}
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}
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}
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}
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if (settings.available()) {
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return settings.set("nodes",moduleList);
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} else {
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return when.reject("Settings unavailable");
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}
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}
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function loadNodeConfigs() {
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var configs = settings.get("nodes");
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if (!configs) {
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return {};
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} else if (configs['node-red']) {
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return configs;
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} else {
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// Migrate from the 0.9.1 format of settings
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var newConfigs = {};
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for (var id in configs) {
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if (configs.hasOwnProperty(id)) {
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var nodeConfig = configs[id];
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var moduleName;
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var nodeSetName;
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if (nodeConfig.module) {
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moduleName = nodeConfig.module;
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nodeSetName = nodeConfig.name.split(":")[1];
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} else {
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moduleName = "node-red";
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nodeSetName = nodeConfig.name.replace(/^\d+-/,"").replace(/\.js$/,"");
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}
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if (!newConfigs[moduleName]) {
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newConfigs[moduleName] = {
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name: moduleName,
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nodes:{}
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};
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}
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newConfigs[moduleName].nodes[nodeSetName] = {
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name: nodeSetName,
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types: nodeConfig.types,
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enabled: nodeConfig.enabled,
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module: moduleName
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};
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}
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}
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settings.set("nodes",newConfigs);
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return newConfigs;
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}
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}
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return {
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init: function() {
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if (settings.available()) {
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moduleConfigs = loadNodeConfigs();
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} else {
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moduleConfigs = {};
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}
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moduleNodes = {};
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nodeTypeToId = {};
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nodeConstructors = {};
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nodeList = [];
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nodeConfigCache = null;
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},
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addNodeSet: function(id,set,version) {
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if (!set.err) {
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set.types.forEach(function(t) {
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nodeTypeToId[t] = id;
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});
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}
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moduleNodes[set.module] = moduleNodes[set.module]||[];
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moduleNodes[set.module].push(set.name);
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if (!moduleConfigs[set.module]) {
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moduleConfigs[set.module] = {
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name: set.module,
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nodes: {}
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};
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}
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if (version) {
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moduleConfigs[set.module].version = version;
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}
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moduleConfigs[set.module].nodes[set.name] = set;
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nodeList.push(id);
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nodeConfigCache = null;
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},
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removeNode: function(id) {
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var config = moduleConfigs[getModule(id)].nodes[getNode(id)];
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if (!config) {
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throw new Error("Unrecognised id: "+id);
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}
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delete moduleConfigs[getModule(id)].nodes[getNode(id)];
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var i = nodeList.indexOf(id);
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if (i > -1) {
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nodeList.splice(i,1);
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}
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config.types.forEach(function(t) {
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delete nodeConstructors[t];
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delete nodeTypeToId[t];
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});
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config.enabled = false;
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config.loaded = false;
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nodeConfigCache = null;
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return filterNodeInfo(config);
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},
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removeModule: function(module) {
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if (!settings.available()) {
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throw new Error("Settings unavailable");
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}
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var nodes = moduleNodes[module];
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if (!nodes) {
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throw new Error("Unrecognised module: "+module);
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}
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var infoList = [];
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for (var i=0;i<nodes.length;i++) {
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infoList.push(registry.removeNode(module+"/"+nodes[i]));
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}
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delete moduleNodes[module];
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saveNodeList();
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return infoList;
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},
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getNodeInfo: function(typeOrId) {
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var id = typeOrId;
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if (nodeTypeToId[typeOrId]) {
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id = nodeTypeToId[typeOrId];
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}
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if (id) {
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var module = moduleConfigs[getModule(id)];
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if (module) {
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var config = module.nodes[getNode(id)];
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if (config) {
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return filterNodeInfo(config);
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}
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}
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}
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return null;
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},
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getNodeList: function() {
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var list = [];
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for (var module in moduleConfigs) {
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if (moduleConfigs.hasOwnProperty(module)) {
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var nodes = moduleConfigs[module].nodes;
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for (var node in nodes) {
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if (nodes.hasOwnProperty(node)) {
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list.push(filterNodeInfo(nodes[node]));
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}
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}
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}
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}
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return list;
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},
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getModuleList: function() {
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var list = [];
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for (var module in moduleNodes) {
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if (moduleNodes.hasOwnProperty(module)) {
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var nodes = moduleNodes[module];
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var m = {
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name: module,
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version: moduleConfigs[module].version,
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nodes: []
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};
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for (var i = 0; i < nodes.length; ++i) {
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m.nodes.push(filterNodeInfo(moduleConfigs[module].nodes[nodes[i]]));
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}
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list.push(m);
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}
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}
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return list;
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},
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getModuleInfo: function(module) {
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if (moduleNodes[module]) {
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var nodes = moduleNodes[module];
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var m = {
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name: module,
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version: moduleConfigs[module].version,
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nodes: []
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};
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for (var i = 0; i < nodes.length; ++i) {
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m.nodes.push(filterNodeInfo(moduleConfigs[module].nodes[nodes[i]]));
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}
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return m;
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} else {
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return null;
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}
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},
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getModuleVersion: function(module) {
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return moduleConfigs[module].version;
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},
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registerNodeConstructor: function(type,constructor) {
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if (nodeConstructors[type]) {
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throw new Error(type+" already registered");
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}
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//TODO: Ensure type is known - but doing so will break some tests
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// that don't have a way to register a node template ahead
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// of registering the constructor
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util.inherits(constructor,Node);
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nodeConstructors[type] = constructor;
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events.emit("type-registered",type);
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},
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/**
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* Gets all of the node template configs
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* @return all of the node templates in a single string
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*/
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getAllNodeConfigs: function() {
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if (!nodeConfigCache) {
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var result = "";
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var script = "";
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for (var i=0;i<nodeList.length;i++) {
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var id = nodeList[i];
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var config = moduleConfigs[getModule(id)].nodes[getNode(id)];
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if (config.enabled && !config.err) {
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result += config.config;
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script += config.script;
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}
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}
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if (script.length > 0) {
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result += '<script type="text/javascript">';
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result += UglifyJS.minify(script, {fromString: true}).code;
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result += '</script>';
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}
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nodeConfigCache = result;
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}
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return nodeConfigCache;
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},
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getNodeConfig: function(id) {
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var config = moduleConfigs[getModule(id)].nodes[getNode(id)];
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if (config) {
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var result = config.config;
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if (config.script) {
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result += '<script type="text/javascript">'+config.script+'</script>';
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}
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return result;
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} else {
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return null;
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}
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},
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getNodeConstructor: function(type) {
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var id = nodeTypeToId[type];
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var config;
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if (typeof id === "undefined") {
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config = undefined;
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} else {
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config = moduleConfigs[getModule(id)].nodes[getNode(id)];
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}
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if (!config || (config.enabled && !config.err)) {
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return nodeConstructors[type];
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}
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return null;
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},
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clear: function() {
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nodeConfigCache = null;
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moduleConfigs = {};
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nodeList = [];
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nodeConstructors = {};
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nodeTypeToId = {};
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},
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getTypeId: function(type) {
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return nodeTypeToId[type];
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},
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getNodeModuleInfo: function(module) {
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return moduleNodes[module];
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},
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enableNodeSet: function(typeOrId) {
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if (!settings.available()) {
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throw new Error("Settings unavailable");
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}
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var id = typeOrId;
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if (nodeTypeToId[typeOrId]) {
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id = nodeTypeToId[typeOrId];
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}
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var config;
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try {
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config = moduleConfigs[getModule(id)].nodes[getNode(id)];
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delete config.err;
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config.enabled = true;
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if (!config.loaded) {
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// TODO: honour the promise this returns
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loadNodeModule(config);
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}
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nodeConfigCache = null;
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saveNodeList();
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} catch (err) {
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throw new Error("Unrecognised id: "+typeOrId);
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}
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return filterNodeInfo(config);
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},
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disableNodeSet: function(typeOrId) {
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if (!settings.available()) {
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throw new Error("Settings unavailable");
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}
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var id = typeOrId;
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if (nodeTypeToId[typeOrId]) {
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id = nodeTypeToId[typeOrId];
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}
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var config;
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try {
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config = moduleConfigs[getModule(id)].nodes[getNode(id)];
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// TODO: persist setting
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config.enabled = false;
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nodeConfigCache = null;
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saveNodeList();
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} catch (err) {
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throw new Error("Unrecognised id: "+id);
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}
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return filterNodeInfo(config);
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},
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saveNodeList: saveNodeList,
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cleanModuleList: function() {
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var removed = false;
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for (var mod in moduleConfigs) {
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if (moduleConfigs.hasOwnProperty(mod)) {
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if (moduleConfigs[mod] && !moduleNodes[mod]) {
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var nodes = moduleConfigs[mod].nodes;
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for (var node in nodes) {
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if (nodes.hasOwnProperty(node)) {
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registry.removeNode(mod+"/"+node);
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removed = true;
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}
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}
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}
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}
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}
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if (removed) {
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saveNodeList();
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}
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}
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};
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})();
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function init(_settings) {
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Node = require("./Node");
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settings = _settings;
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registry.init();
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}
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/**
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* Synchronously walks the directory looking for node files.
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* Emits 'node-icon-dir' events for an icon dirs found
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* @param dir the directory to search
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* @return an array of fully-qualified paths to .js files
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*/
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function getNodeFiles(dir) {
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var result = [];
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var files = [];
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try {
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files = fs.readdirSync(dir);
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} catch(err) {
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return result;
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}
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files.sort();
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files.forEach(function(fn) {
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var stats = fs.statSync(path.join(dir,fn));
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if (stats.isFile()) {
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if (/\.js$/.test(fn)) {
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var valid = true;
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if (settings.nodesExcludes) {
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for (var i=0;i<settings.nodesExcludes.length;i++) {
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if (settings.nodesExcludes[i] == fn) {
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valid = false;
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break;
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}
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}
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}
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valid = valid && fs.existsSync(path.join(dir,fn.replace(/\.js$/,".html")));
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if (valid) {
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result.push(path.join(dir,fn));
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}
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}
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} else if (stats.isDirectory()) {
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// Ignore /.dirs/, /lib/ /node_modules/
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if (!/^(\..*|lib|icons|node_modules|test)$/.test(fn)) {
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result = result.concat(getNodeFiles(path.join(dir,fn)));
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} else if (fn === "icons") {
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events.emit("node-icon-dir",path.join(dir,fn));
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}
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}
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});
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return result;
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}
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/**
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* Scans the node_modules path for nodes
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* @param moduleName the name of the module to be found
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* @return a list of node modules: {dir,package}
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*/
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function scanTreeForNodesModules(moduleName) {
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var dir = __dirname+"/../../nodes";
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var results = [];
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var up = path.resolve(path.join(dir,".."));
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while (up !== dir) {
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var pm = path.join(dir,"node_modules");
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try {
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var files = fs.readdirSync(pm);
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for (var i=0;i<files.length;i++) {
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var fn = files[i];
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if (!registry.getNodeModuleInfo(fn)) {
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if (!moduleName || fn == moduleName) {
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var pkgfn = path.join(pm,fn,"package.json");
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try {
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var pkg = require(pkgfn);
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if (pkg['node-red']) {
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var moduleDir = path.join(pm,fn);
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results.push({dir:moduleDir,package:pkg});
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}
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} catch(err) {
|
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if (err.code != "MODULE_NOT_FOUND") {
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// TODO: handle unexpected error
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}
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}
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if (fn == moduleName) {
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break;
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}
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}
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}
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}
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} catch(err) {
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}
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dir = up;
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up = path.resolve(path.join(dir,".."));
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}
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return results;
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}
|
|
|
|
/**
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|
* Loads the nodes provided in an npm package.
|
|
* @param moduleDir the root directory of the package
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|
* @param pkg the module's package.json object
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*/
|
|
function loadNodesFromModule(moduleDir,pkg) {
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var nodes = pkg['node-red'].nodes||{};
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var results = [];
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var iconDirs = [];
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for (var n in nodes) {
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if (nodes.hasOwnProperty(n)) {
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var file = path.join(moduleDir,nodes[n]);
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try {
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results.push(loadNodeConfig(file,pkg.name,n,pkg.version));
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} catch(err) {
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}
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var iconDir = path.join(moduleDir,path.dirname(nodes[n]),"icons");
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if (iconDirs.indexOf(iconDir) == -1) {
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if (fs.existsSync(iconDir)) {
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events.emit("node-icon-dir",iconDir);
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iconDirs.push(iconDir);
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}
|
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}
|
|
}
|
|
}
|
|
return results;
|
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}
|
|
|
|
|
|
/**
|
|
* Loads a node's configuration
|
|
* @param file the fully qualified path of the node's .js file
|
|
* @param name the name of the node
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|
* @return the node object
|
|
* {
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|
* id: a unqiue id for the node file
|
|
* name: the name of the node file, or label from the npm module
|
|
* file: the fully qualified path to the node's .js file
|
|
* template: the fully qualified path to the node's .html file
|
|
* config: the non-script parts of the node's .html file
|
|
* script: the script part of the node's .html file
|
|
* types: an array of node type names in this file
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|
* }
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|
*/
|
|
function loadNodeConfig(file,module,name,version) {
|
|
var id = module + "/" + name;
|
|
var info = registry.getNodeInfo(id);
|
|
|
|
var isEnabled = true;
|
|
|
|
if (info) {
|
|
if (info.hasOwnProperty("loaded")) {
|
|
throw new Error(file+" already loaded");
|
|
}
|
|
isEnabled = info.enabled;
|
|
}
|
|
|
|
var node = {
|
|
id: id,
|
|
module: module,
|
|
name: name,
|
|
file: file,
|
|
template: file.replace(/\.js$/,".html"),
|
|
enabled: isEnabled,
|
|
loaded:false
|
|
};
|
|
|
|
try {
|
|
var content = fs.readFileSync(node.template,'utf8');
|
|
|
|
var types = [];
|
|
|
|
var regExp = /<script ([^>]*)data-template-name=['"]([^'"]*)['"]/gi;
|
|
var match = null;
|
|
|
|
while((match = regExp.exec(content)) !== null) {
|
|
types.push(match[2]);
|
|
}
|
|
node.types = types;
|
|
node.config = content;
|
|
|
|
// TODO: parse out the javascript portion of the template
|
|
node.script = "";
|
|
|
|
for (var i=0;i<node.types.length;i++) {
|
|
if (registry.getTypeId(node.types[i])) {
|
|
node.err = node.types[i]+" already registered";
|
|
break;
|
|
}
|
|
}
|
|
} catch(err) {
|
|
node.types = [];
|
|
if (err.code === 'ENOENT') {
|
|
node.err = "Error: "+file+" does not exist";
|
|
} else {
|
|
node.err = err.toString();
|
|
}
|
|
}
|
|
|
|
registry.addNodeSet(id,node,version);
|
|
return node;
|
|
}
|
|
|
|
/**
|
|
* Loads all palette nodes
|
|
* @param defaultNodesDir optional parameter, when set, it overrides the default
|
|
* location of nodeFiles - used by the tests
|
|
* @return a promise that resolves on completion of loading
|
|
*/
|
|
function load(defaultNodesDir,disableNodePathScan) {
|
|
return when.promise(function(resolve,reject) {
|
|
// Find all of the nodes to load
|
|
var nodeFiles;
|
|
if(defaultNodesDir) {
|
|
nodeFiles = getNodeFiles(path.resolve(defaultNodesDir));
|
|
} else {
|
|
nodeFiles = getNodeFiles(__dirname+"/../../nodes");
|
|
}
|
|
|
|
if (settings.nodesDir) {
|
|
var dir = settings.nodesDir;
|
|
if (typeof settings.nodesDir == "string") {
|
|
dir = [dir];
|
|
}
|
|
for (var i=0;i<dir.length;i++) {
|
|
nodeFiles = nodeFiles.concat(getNodeFiles(dir[i]));
|
|
}
|
|
}
|
|
var nodes = [];
|
|
nodeFiles.forEach(function(file) {
|
|
try {
|
|
nodes.push(loadNodeConfig(file,"node-red",path.basename(file).replace(/^\d+-/,"").replace(/\.js$/,""),settings.version));
|
|
} catch(err) {
|
|
//
|
|
}
|
|
});
|
|
|
|
// TODO: disabling npm module loading if defaultNodesDir set
|
|
// This indicates a test is being run - don't want to pick up
|
|
// unexpected nodes.
|
|
// Urgh.
|
|
if (!disableNodePathScan) {
|
|
// Find all of the modules containing nodes
|
|
var moduleFiles = scanTreeForNodesModules();
|
|
moduleFiles.forEach(function(moduleFile) {
|
|
nodes = nodes.concat(loadNodesFromModule(moduleFile.dir,moduleFile.package));
|
|
});
|
|
}
|
|
var promises = [];
|
|
nodes.forEach(function(node) {
|
|
if (!node.err) {
|
|
promises.push(loadNodeModule(node));
|
|
}
|
|
});
|
|
|
|
//resolve([]);
|
|
when.settle(promises).then(function(results) {
|
|
// Trigger a load of the configs to get it precached
|
|
registry.getAllNodeConfigs();
|
|
|
|
if (settings.available()) {
|
|
resolve(registry.saveNodeList());
|
|
} else {
|
|
resolve();
|
|
}
|
|
});
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Loads the specified node into the runtime
|
|
* @param node a node info object - see loadNodeConfig
|
|
* @return a promise that resolves to an update node info object. The object
|
|
* has the following properties added:
|
|
* err: any error encountered whilst loading the node
|
|
*
|
|
*/
|
|
function loadNodeModule(node) {
|
|
var nodeDir = path.dirname(node.file);
|
|
var nodeFn = path.basename(node.file);
|
|
if (!node.enabled) {
|
|
return when.resolve(node);
|
|
}
|
|
try {
|
|
var loadPromise = null;
|
|
var r = require(node.file);
|
|
if (typeof r === "function") {
|
|
var promise = r(require('../red'));
|
|
if (promise != null && typeof promise.then === "function") {
|
|
loadPromise = promise.then(function() {
|
|
node.enabled = true;
|
|
node.loaded = true;
|
|
return node;
|
|
}).otherwise(function(err) {
|
|
node.err = err;
|
|
return node;
|
|
});
|
|
}
|
|
}
|
|
if (loadPromise == null) {
|
|
node.enabled = true;
|
|
node.loaded = true;
|
|
loadPromise = when.resolve(node);
|
|
}
|
|
return loadPromise;
|
|
} catch(err) {
|
|
node.err = err;
|
|
return when.resolve(node);
|
|
}
|
|
}
|
|
|
|
function loadNodeList(nodes) {
|
|
var promises = [];
|
|
nodes.forEach(function(node) {
|
|
if (!node.err) {
|
|
promises.push(loadNodeModule(node));
|
|
} else {
|
|
promises.push(node);
|
|
}
|
|
});
|
|
|
|
return when.settle(promises).then(function(results) {
|
|
return registry.saveNodeList().then(function() {
|
|
var list = results.map(function(r) {
|
|
return filterNodeInfo(r.value);
|
|
});
|
|
return list;
|
|
});
|
|
});
|
|
}
|
|
|
|
function addNode(file) {
|
|
if (!settings.available()) {
|
|
throw new Error("Settings unavailable");
|
|
}
|
|
var nodes = [];
|
|
try {
|
|
nodes.push(loadNodeConfig(file,"node-red",path.basename(file).replace(/^\d+-/,"").replace(/\.js$/,""),settings.version));
|
|
} catch(err) {
|
|
return when.reject(err);
|
|
}
|
|
return loadNodeList(nodes);
|
|
}
|
|
|
|
function addModule(module) {
|
|
if (!settings.available()) {
|
|
throw new Error("Settings unavailable");
|
|
}
|
|
var nodes = [];
|
|
if (registry.getNodeModuleInfo(module)) {
|
|
return when.reject(new Error("Module already loaded"));
|
|
}
|
|
var moduleFiles = scanTreeForNodesModules(module);
|
|
if (moduleFiles.length === 0) {
|
|
var err = new Error("Cannot find module '" + module + "'");
|
|
err.code = 'MODULE_NOT_FOUND';
|
|
return when.reject(err);
|
|
}
|
|
moduleFiles.forEach(function(moduleFile) {
|
|
nodes = nodes.concat(loadNodesFromModule(moduleFile.dir,moduleFile.package));
|
|
});
|
|
return loadNodeList(nodes);
|
|
}
|
|
|
|
module.exports = {
|
|
init:init,
|
|
load:load,
|
|
clear: registry.clear,
|
|
registerType: registry.registerNodeConstructor,
|
|
|
|
get: registry.getNodeConstructor,
|
|
getNodeInfo: registry.getNodeInfo,
|
|
getNodeList: registry.getNodeList,
|
|
|
|
getNodeModuleInfo: registry.getNodeModuleInfo,
|
|
|
|
getModuleInfo: registry.getModuleInfo,
|
|
getModuleList: registry.getModuleList,
|
|
getModuleVersion: registry.getModuleVersion,
|
|
|
|
getNodeConfigs: registry.getAllNodeConfigs,
|
|
getNodeConfig: registry.getNodeConfig,
|
|
|
|
addNode: addNode,
|
|
removeNode: registry.removeNode,
|
|
enableNode: registry.enableNodeSet,
|
|
disableNode: registry.disableNodeSet,
|
|
|
|
addModule: addModule,
|
|
removeModule: registry.removeModule,
|
|
cleanModuleList: registry.cleanModuleList
|
|
};
|