@vroomlabs/gsdk-deploy/lib/util/callback.js

Google Cloud deployment script for kubernetes clusters using Global Load Balancer

'use strict';
/******************************************************************************
 * MIT License
 * Copyright (c) 2017 https://github.com/vroomlabs
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:

 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 * Created by rogerk on 7/4/17.
 ******************************************************************************/

/**
 * Returns a promise from a callback method in the form of (error, result)
 * Using this since I'm running babel and don't want to include bluebird.
 * @param {object} context - the object to which the method belongs
 * @param {function} method - the method to promisify
 * @returns {Promise}
 */Object.defineProperty(exports,'__esModule',{value:true});exports.
promisify=promisify;function promisify(context,method){
var args=[].slice.call(arguments).splice(2);
if(typeof method==='string'){
if(context[method]&&context[method].apply){
method=context[method];
}
}
if(!method.apply){
throw new Error('Expected a function, found '+method+'.');
}

return new Promise(function(accept,reject){
args.push(function promise_callback(error,result){
if(error)return reject(error);else
return accept(result);
});

try{
method.apply(context,args);
}
catch(ex){
reject(ex);
}
});
}