mirror of
https://github.com/node-red/node-red.git
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117 lines
3.1 KiB
JavaScript
117 lines
3.1 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 RED = require("../../red/red");
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var util = require("util");
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var ws = require('ws');
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var events = require("events");
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var debuglength = RED.settings.debugMaxLength||1000;
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function DebugNode(n) {
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RED.nodes.createNode(this,n);
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this.name = n.name;
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this.complete = n.complete;
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this.active = (n.active == null)||n.active;
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this.on("input",function(msg) {
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if (this.active) {
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if (msg.payload instanceof Buffer) {
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msg.payload = "(Buffer) "+msg.payload.toString();
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}
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if (this.complete == "true") {
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DebugNode.send({id:this.id,name:this.name,topic:msg.topic,msg:msg,_path:msg._path});
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} else {
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if (typeof msg.payload !== "undefined") {
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DebugNode.send({id:this.id,name:this.name,topic:msg.topic,msg:msg.payload,_path:msg._path});
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}
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}
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}
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});
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}
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RED.nodes.registerType("debug",DebugNode);
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DebugNode.send = function(msg) {
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if (msg.msg instanceof Error) {
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msg.msg = msg.msg.toString();
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}
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else if (typeof msg.msg === 'object') {
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var seen = [];
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msg.msg = "(Object) " + JSON.stringify(msg.msg, function(key, value) {
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if (typeof value === 'object' && value !== null) {
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if (seen.indexOf(value) !== -1) { return "[circular]"; }
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seen.push(value);
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}
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return value;
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}," ");
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seen = null;
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}
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else if (typeof msg.msg === "boolean") msg.msg = "(boolean) "+msg.msg.toString();
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else if (msg.msg === 0) msg.msg = "0";
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if (msg.msg.length > debuglength) {
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msg.msg = msg.msg.substr(0,debuglength) +" ....";
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}
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for (var i in DebugNode.activeConnections) {
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var ws = DebugNode.activeConnections[i];
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try {
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var p = JSON.stringify(msg);
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ws.send(p);
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} catch(err) {
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util.log("[debug] ws error : "+err);
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}
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}
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}
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DebugNode.activeConnections = [];
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DebugNode.wsServer = new ws.Server({server:RED.server});
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DebugNode.wsServer.on('connection',function(ws) {
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DebugNode.activeConnections.push(ws);
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ws.on('close',function() {
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for (var i in DebugNode.activeConnections) {
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if (DebugNode.activeConnections[i] === ws) {
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DebugNode.activeConnections.splice(i,1);
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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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DebugNode.logHandler = new events.EventEmitter();
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DebugNode.logHandler.on("log",function(msg) {
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if (msg.level == "warn" || msg.level == "error") {
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DebugNode.send(msg);
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}
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});
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RED.nodes.addLogHandler(DebugNode.logHandler);
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RED.app.post("/debug/:id", function(req,res) {
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var node = RED.nodes.getNode(req.params.id);
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if (node != null) {
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if (node.active) {
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node.active = false;
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res.send(201);
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} else {
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node.active = true;
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res.send(200);
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}
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} else {
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res.send(404);
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}
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});
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