mirror of
https://github.com/node-red/node-red.git
synced 2023-10-10 13:36:53 +02:00
370 lines
13 KiB
JavaScript
370 lines
13 KiB
JavaScript
/**
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* Copyright 2013 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 util = require('util');
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var when = require('when');
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var exec = require('child_process').exec;
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var createUI = require("./ui");
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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 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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function createServer(_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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if (settings.httpAdminRoot !== false) {
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if (!settings.disableEditor) {
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createUI(settings,app);
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}
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app.get("/flows",function(req,res) {
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res.json(redNodes.getFlows());
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});
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app.post("/flows",
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express.json(),
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function(req,res) {
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var flows = req.body;
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redNodes.setFlows(flows).then(function() {
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res.send(204);
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}).otherwise(function(err) {
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util.log("[red] Error saving flows : "+err);
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res.send(500,err.message);
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});
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},
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function(error,req,res,next) {
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res.send(400,"Invalid Flow");
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}
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);
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app.get("/nodes",function(req,res) {
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if (req.get("accept") == "application/json") {
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res.json(redNodes.getNodeList());
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} else {
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res.send(redNodes.getNodeConfigs());
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}
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});
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app.post("/nodes",
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express.json(),
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function(req,res) {
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if (!settings.available()) {
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res.send(400,new Error("Settings unavailable").toString());
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return;
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}
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var node = req.body;
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var promise;
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if (node.file) {
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promise = redNodes.addNode(node.file).then(reportAddedModules);
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} else if (node.module) {
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var module = redNodes.getNodeModuleInfo(node.module);
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if (module) {
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res.send(400,"Module already loaded");
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return;
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}
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promise = installModule(node.module);
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} else {
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res.send(400,"Invalid request");
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return;
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}
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promise.then(function(info) {
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res.json(info);
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}).otherwise(function(err) {
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if (err.code === 404) {
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res.send(404);
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} else {
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res.send(400,err.toString());
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}
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});
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},
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function(err,req,res,next) {
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console.log(err.toString());
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res.send(400,err);
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}
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);
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app.delete("/nodes/:id",
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function(req,res) {
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if (!settings.available()) {
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res.send(400,new Error("Settings unavailable").toString());
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return;
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}
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var id = req.params.id;
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var removedNodes = [];
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try {
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var node = redNodes.getNodeInfo(id);
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var promise = null;
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if (!node) {
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var module = redNodes.getNodeModuleInfo(id);
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if (!module) {
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res.send(404);
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return;
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} else {
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promise = uninstallModule(id);
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}
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} else {
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promise = when.resolve([redNodes.removeNode(id)]).then(reportRemovedModules);
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}
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promise.then(function(removedNodes) {
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res.json(removedNodes);
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}).otherwise(function(err) {
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console.log(err.stack);
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res.send(400,err.toString());
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});
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} catch(err) {
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res.send(400,err.toString());
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}
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},
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function(err,req,res,next) {
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res.send(400,err);
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}
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);
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app.get("/nodes/:id", function(req,res) {
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var id = req.params.id;
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var result = null;
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if (req.get("accept") == "application/json") {
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result = redNodes.getNodeInfo(id);
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} else {
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result = redNodes.getNodeConfig(id);
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}
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if (result) {
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res.send(result);
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} else {
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res.send(404);
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}
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});
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app.put("/nodes/:id",
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express.json(),
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function(req,res) {
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if (!settings.available()) {
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res.send(400,new Error("Settings unavailable").toString());
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return;
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}
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var body = req.body;
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if (!body.hasOwnProperty("enabled")) {
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res.send(400,"Invalid request");
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return;
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}
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try {
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var info;
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var id = req.params.id;
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var node = redNodes.getNodeInfo(id);
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if (!node) {
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res.send(404);
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} else if (!node.err && node.enabled === body.enabled) {
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res.json(node);
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} else {
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if (body.enabled) {
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info = redNodes.enableNode(id);
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} else {
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info = redNodes.disableNode(id);
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}
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if (info.enabled == body.enabled && !info.err) {
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comms.publish("node/"+(body.enabled?"enabled":"disabled"),info,false);
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util.log("[red] "+(body.enabled?"Enabled":"Disabled")+" node types:");
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for (var i=0;i<info.types.length;i++) {
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util.log("[red] - "+info.types[i]);
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}
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} else if (body.enabled && info.err) {
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util.log("[red] Failed to enable node:");
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util.log("[red] - "+info.name+" : "+info.err);
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}
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res.json(info);
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}
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} catch(err) {
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res.send(400,err.toString());
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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 reportAddedModules(info) {
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comms.publish("node/added",info,false);
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if (info.length > 0) {
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util.log("[red] 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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util.log("[red] - "+
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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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util.log("[red] 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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util.log("[red] - "+(removedNodes[i].module?removedNodes[i].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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util.log("[red] Installing module: "+module);
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var child = exec('npm install --production '+module, 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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util.log("[red] 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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util.log("[red] Installation of module "+module+" failed:");
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util.log("------------------------------------------");
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console.log(err.toString());
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util.log("------------------------------------------");
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reject(new Error("Install failed"));
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}
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} else {
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util.log("[red] 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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function uninstallModule(module) {
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var list = redNodes.removeModule(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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util.log("[red] Removing module: "+module);
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var child = exec('npm remove '+module, function(err, stdin, stdout) {
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if (err) {
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util.log("[red] Removal of module "+module+" failed:");
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util.log("------------------------------------------");
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console.log(err.toString());
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util.log("------------------------------------------");
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reject(new Error("Removal failed"));
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} else {
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util.log("[red] 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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function start() {
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var defer = when.defer();
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storage.init(settings).then(function() {
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settings.load(storage).then(function() {
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console.log("\nWelcome to Node-RED\n===================\n");
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if (settings.version) {
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util.log("[red] Version: "+settings.version);
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}
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util.log("[red] Loading palette nodes");
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redNodes.init(settings,storage);
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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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util.log("------------------------------------------");
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if (settings.verbose) {
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for (i=0;i<nodeErrors.length;i+=1) {
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util.log("["+nodeErrors[i].name+"] "+nodeErrors[i].err);
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}
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} else {
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util.log("[red] Failed to register "+nodeErrors.length+" node type"+(nodeErrors.length==1?"":"s"));
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util.log("[red] Run with -v for details");
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}
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util.log("------------------------------------------");
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}
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if (nodeMissing.length > 0) {
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util.log("[red] 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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util.log(" - "+i+": "+missingModules[i].join(", "));
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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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defer.resolve();
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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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}).otherwise(function(err) {
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defer.reject(err);
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});
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return defer.promise;
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}
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function stop() {
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redNodes.stopFlows();
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comms.stop();
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}
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module.exports = {
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init: createServer,
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start: start,
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stop: stop
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}
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module.exports.__defineGetter__("app", function() { return app });
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module.exports.__defineGetter__("nodeApp", function() { return nodeApp });
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module.exports.__defineGetter__("server", function() { return server });
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