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node-red/red/log.js

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/**
* Copyright 2014 IBM Corp.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
**/
var util = require("util");
var EventEmitter = require("events").EventEmitter;
var logHandlers = [];
var ConsoleLogHandler = new EventEmitter();
ConsoleLogHandler.on("log",function(msg) {
util.log("["+msg.level+"] ["+msg.type+":"+(msg.name||msg.id)+"] "+msg.msg);
});
var log = module.exports = {
addHandler: function(func) {
logHandlers.push(func);
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},
log: function(msg) {
logHandlers.forEach(function(handler) {
handler.emit("log",msg);
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});
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}
}
log.addHandler(ConsoleLogHandler);