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config.js
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config.js
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// Copyright 2015-2016, Google, Inc.
// 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.
'use strict';
// Hierarchical node.js configuration with command-line arguments, environment
// variables, and files.
var nconf = module.exports = require('nconf');
var path = require('path');
var logger = require('./logs');
var config_file = 'NODE_ENV' in process.env?process.env.NODE_ENV+'-config.json':'config.json'
logger.info('Service mode is '+config_file);
nconf
// 1. Command-line arguments
.argv()
// 2. Environment variables
.env([
'DATA_BACKEND',
'MONGO_URL',
'MONGO_COLLECTION',
'MYSQL_USER',
'MYSQL_PASSWORD',
'MYSQL_HOST',
'NODE_ENV',
'OAUTH2_CLIENT_ID',
'OAUTH2_CLIENT_SECRET',
'OAUTH2_CALLBACK',
'GOOGLE_CLIENT_ID',
'GOOGLE_CLIENT_SECRET',
'GOOGLE_CALLBACK_URL',
'PORT',
'SECRET'
])
// 3. Config file
.file({ file: path.join(__dirname, config_file) })
// 4. Defaults
.defaults({
// Typically you will create a bucket with the same name as your project ID.
CLOUD_BUCKET: '',
// dataBackend can be 'datastore', 'cloudsql', or 'mongodb'. Be sure to
// configure the appropriate settings for each storage engine below.
// If you are unsure, use datastore as it requires no additional
// configuration.
DATA_BACKEND: 'datastore',
// Connection url for the Memcache instance used to store session data
MEMCACHE_URL: '127.0.0.1:11211',
// MongoDB connection string
// https://docs.mongodb.org/manual/reference/connection-string/
MONGO_URL: 'mongodb://localhost:27017',
MONGO_DATABASE: 'test',
MYSQL_USER: '',
MYSQL_PASSWORD: '',
MYSQL_HOST: '',
OAUTH2_CLIENT_ID: '',
OAUTH2_CLIENT_SECRET: '',
OAUTH2_CALLBACK: 'http://localhost:8080/auth/google/callback',
GOOGLE_CLIENT_ID:"",
GOOGLE_CLIENT_SECRET:"",
GOOGLE_CALLBACK_URL:"",
// Port the HTTP server
PORT: 8080,
SECRET: 'keyboardcat'
});
// Check for required settings
checkConfig('GOOGLE_CLIENT_ID');
checkConfig('GOOGLE_CLIENT_SECRET');
checkConfig('GOOGLE_CALLBACK_URL');
if (nconf.get('DATA_BACKEND') === 'cloudsql') {
checkConfig('MYSQL_USER');
checkConfig('MYSQL_PASSWORD');
checkConfig('MYSQL_HOST');
} else if (nconf.get('DATA_BACKEND') === 'mongodb') {
checkConfig('MONGO_URL');
checkConfig('MONGO_DATABASE');
}
function checkConfig (setting) {
if (!nconf.get(setting)) {
throw new Error('You must set the ' + setting + ' environment variable or' +
' add it to config.json!');
}
}