mirror of
https://github.com/node-red/node-red.git
synced 2023-10-10 13:36:53 +02:00
259 lines
8.9 KiB
JavaScript
259 lines
8.9 KiB
JavaScript
/**
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* Copyright 2013, 2015 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 express = require('express');
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var when = require('when');
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var child_process = require('child_process');
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var path = require("path");
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var fs = require("fs");
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var redNodes = require("./nodes");
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var comms = require("./comms");
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var storage = require("./storage");
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var log = require("./log");
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var app = null;
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var nodeApp = null;
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var server = null;
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var settings = null;
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var runtimeMetricInterval = null;
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function init(_server,_settings) {
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server = _server;
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settings = _settings;
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comms.init(_server,_settings);
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nodeApp = express();
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app = express();
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}
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function start() {
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return storage.init(settings)
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.then(function() { return settings.load(storage)})
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.then(function() {
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if (settings.httpAdminRoot !== false) {
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require("./api").init(app,storage);
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}
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if (log.metric()) {
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runtimeMetricInterval = setInterval(function() {
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reportMetrics();
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}, settings.runtimeMetricInterval||15000);
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}
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console.log("\n\nWelcome to Node-RED\n===================\n");
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if (settings.version) {
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log.info("Node-RED version: v"+settings.version);
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}
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log.info("Node.js version: "+process.version);
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log.info("Loading palette nodes");
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redNodes.init(settings,storage,app);
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redNodes.load().then(function() {
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var i;
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var nodes = redNodes.getNodeList();
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var nodeErrors = nodes.filter(function(n) { return n.err!=null;});
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var nodeMissing = nodes.filter(function(n) { return n.module && n.enabled && !n.loaded && !n.err;});
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if (nodeErrors.length > 0) {
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log.warn("------------------------------------------");
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if (settings.verbose) {
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for (i=0;i<nodeErrors.length;i+=1) {
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log.warn("["+nodeErrors[i].name+"] "+nodeErrors[i].err);
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}
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} else {
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log.warn("Failed to register "+nodeErrors.length+" node type"+(nodeErrors.length==1?"":"s"));
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log.warn("Run with -v for details");
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}
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log.warn("------------------------------------------");
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}
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if (nodeMissing.length > 0) {
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log.warn("Missing node modules:");
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var missingModules = {};
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for (i=0;i<nodeMissing.length;i++) {
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var missing = nodeMissing[i];
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missingModules[missing.module] = (missingModules[missing.module]||[]).concat(missing.types);
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}
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var promises = [];
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for (i in missingModules) {
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if (missingModules.hasOwnProperty(i)) {
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log.warn(" - "+i+": "+missingModules[i].join(", "));
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if (settings.autoInstallModules && i != "node-red") {
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serverAPI.installModule(i).otherwise(function(err) {
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// Error already reported. Need the otherwise handler
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// to stop the error propagating any further
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});
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}
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}
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}
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if (!settings.autoInstallModules) {
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log.info("Removing modules from config");
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redNodes.cleanModuleList();
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}
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}
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redNodes.loadFlows();
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}).otherwise(function(err) {
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console.log(err);
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});
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comms.start();
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});
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}
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function reportAddedModules(info) {
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comms.publish("node/added",info,false);
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if (info.length > 0) {
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log.info("Added node types:");
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for (var i=0;i<info.length;i++) {
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for (var j=0;j<info[i].types.length;j++) {
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log.info(" - "+
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(info[i].module?info[i].module+":":"")+
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info[i].types[j]+
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(info[i].err?" : "+info[i].err:"")
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);
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}
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}
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}
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return info;
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}
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function reportRemovedModules(removedNodes) {
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comms.publish("node/removed",removedNodes,false);
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log.info("Removed node types:");
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for (var j=0;j<removedNodes.length;j++) {
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for (var i=0;i<removedNodes[j].types.length;i++) {
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log.info(" - "+(removedNodes[j].module?removedNodes[j].module+":":"")+removedNodes[j].types[i]);
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}
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}
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return removedNodes;
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}
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function installModule(module) {
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//TODO: ensure module is 'safe'
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return when.promise(function(resolve,reject) {
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if (/[\s;]/.test(module)) {
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reject(new Error("Invalid module name"));
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return;
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}
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log.info("Installing module: "+module);
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var installDir = settings.userDir || process.env.NODE_RED_HOME || ".";
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var child = child_process.exec('npm install --production '+module,
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{
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cwd: installDir
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},
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function(err, stdin, stdout) {
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if (err) {
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var lookFor404 = new RegExp(" 404 .*"+module+"$","m");
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if (lookFor404.test(stdout)) {
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log.warn("Installation of module "+module+" failed: module not found");
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var e = new Error();
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e.code = 404;
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reject(e);
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} else {
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log.warn("Installation of module "+module+" failed:");
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log.warn("------------------------------------------");
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log.warn(err.toString());
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log.warn("------------------------------------------");
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reject(new Error("Install failed"));
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}
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} else {
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log.info("Installed module: "+module);
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resolve(redNodes.addModule(module).then(reportAddedModules));
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}
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}
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);
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});
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}
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function uninstallModule(module) {
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return when.promise(function(resolve,reject) {
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if (/[\s;]/.test(module)) {
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reject(new Error("Invalid module name"));
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return;
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}
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var installDir = settings.userDir || process.env.NODE_RED_HOME || ".";
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var moduleDir = path.join(installDir,"node_modules",module);
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if (!fs.existsSync(moduleDir)) {
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return reject(new Error("Unabled to uninstall "+module+"."));
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}
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var list = redNodes.removeModule(module);
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log.info("Removing module: "+module);
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var child = child_process.exec('npm remove '+module,
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{
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cwd: installDir
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},
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function(err, stdin, stdout) {
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if (err) {
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log.warn("Removal of module "+module+" failed:");
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log.warn("------------------------------------------");
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log.warn(err.toString());
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log.warn("------------------------------------------");
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reject(new Error("Removal failed"));
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} else {
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log.info("Removed module: "+module);
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reportRemovedModules(list);
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resolve(list);
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}
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}
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);
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});
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}
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function reportMetrics() {
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var memUsage = process.memoryUsage();
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log.log({
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level: log.METRIC,
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event: "runtime.memory.rss",
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value: memUsage.rss
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});
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log.log({
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level: log.METRIC,
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event: "runtime.memory.heapTotal",
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value: memUsage.heapTotal
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});
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log.log({
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level: log.METRIC,
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event: "runtime.memory.heapUsed",
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value: memUsage.heapUsed
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});
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}
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function stop() {
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if (runtimeMetricInterval) {
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clearInterval(runtimeMetricInterval);
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runtimeMetricInterval = null;
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}
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redNodes.stopFlows();
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comms.stop();
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}
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var serverAPI = module.exports = {
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init: init,
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start: start,
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stop: stop,
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reportAddedModules: reportAddedModules,
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reportRemovedModules: reportRemovedModules,
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installModule: installModule,
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uninstallModule: uninstallModule,
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get app() { return app },
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get nodeApp() { return nodeApp },
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get server() { return server }
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}
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