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configuration.js
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configuration.js
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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/*
* An abstraction which contains various pre-set deployment
* environments and adjusts runtime configuration appropriate for
* the current environmnet (specified via the NODE_ENV env var)..
* Borrowed from the browserid project. -- Thanks @lloyd.
* (https://github.com/mozilla/browserid)
*
* usage is
* exports.configure(app);
*/
const
path = require('path'),
semver = require('semver'),
fs = require('fs'),
convict = require('convict'),
cjson = require('cjson');
process.env.APP_ROOT = path.join(path.dirname(module.filename), '..');
// verify the proper version of node.js is in use
try {
var required = 'unknown';
// extract required node version from package.json
required = JSON.parse(fs.readFileSync(path.join(__dirname, '..', "package.json"))).engines.node;
if (!semver.satisfies(process.version, required)) throw false;
} catch (e) {
process.stderr.write("update node! verision " + process.version +
" is not " + required +
(e ? " (" + e + ")" : "") + "\n");
process.exit(1);
}
var conf = module.exports = convict({
env: {
doc: "What environment are we running in? Note: all hosted environments are 'production'. ",
//TODO: Perhaps unrestrict environment names.
format: 'string ["production", "test", "development"] = "production"',
env: 'NODE_ENV'
},
irc: {
server: {
doc: "The host name of the server we're connecting to",
format: 'string = "irc.mozilla.org"',
env: 'IRC_HOST'
},
nick: {
doc: "The nick for the daemon to use",
format: 'string = "motown"',
env: 'IRC_NICK'
},
retryDelay: {
doc: "The delay between connection attempts by the IRC Bot.",
format: 'integer{100,10000} = 2000'
}
},
logger: {
level: {
doc: "The log level",
format: 'string ["silent", "win", "error", "warn", "http", "info", "verbose", "silly"] = "info"',
env: 'LOG_LEVEL'
}
},
redis: {
ignore_vcap_service_creds: {
doc: "Ignore creds discovered via VCAP_SERVICES environment variable",
format: 'boolean = false',
env: 'REDIS_IGNORE_VCAP_SERVICES'
},
host: {
doc: "The host where redis is listening",
format: 'string = "localhost"',
env: 'REDIS_HOST'
},
port: {
doc: "The port that redis is listening on",
format: 'integer{1,65535} = 6379',
env: 'REDIS_PORT'
},
password: {
doc: "The password for redis if applicable",
format: 'string?',
env: 'REDIS_PASSWORD'
}
},
mysql: {
user: {
doc: "The MySQL username to connect with",
format: 'string',
env: 'MYSQL_USER'
},
password: {
doc: "The MySQL password",
format: 'string',
env: 'MYSQL_PASSWORD'
},
database: {
doc: "The MySQL database to connect to",
format: 'string = "motown"',
env: 'MYSQL_DATABASE'
}
},
bind_to: {
host: {
doc: "The ip address the HTTP server should bind to",
format: 'string = "127.0.0.1"',
env: 'IP_ADDRESS'
},
port: {
doc: "The port the HTTP server should bind to",
format: 'integer{1,65535}?',
env: 'PORT'
}
},
public_url: {
doc: "The publically visible URL of the deployment",
format: 'string = "http://motown.mozillalabs.com"',
env: 'URL'
},
public_ws_url: {
doc: "The publically available URL for WebSockets",
format: 'string = "ws://motown.mozillalabs.com"',
env: 'WS_URL'
},
social_provider: {
name_suffix: {
doc: "The suffix to add on to the name you see in /social_provider/manifest.json",
format: 'string = ""'
}
}
});
console.log("Initializing MoTown. Environment: " + conf.get('env'));
// Here we set NODE_ENV in case we're defaulting to prod.
// If NODE_ENV is already set, it'll be the same as conf.get('env')
process.env.NODE_ENV = conf.get('env');
// Here we load config/base.json and then overlay config/environments/{{NODE_ENV}}.json
conf.load(cjson.load(path.join(__dirname, '..', 'config', 'base.json')));
conf.load(cjson.load(path.join(__dirname, '..', 'config', 'environments', conf.get('env') + '.json')));
try{
// validate the configuration based on the above specification
conf.validate();
} catch(ex){
console.log("\nError validating configuration! \n\tSee " + __filename + ". \n\tError: " + ex);
process.exit();
}
// Replace any settings with those discovered in VCAP_SERVICES
if (process.env.VCAP_SERVICES){
var vcapServices = JSON.parse(process.env.VCAP_SERVICES);
conf.load({
bind_to: {
port: process.env.VCAP_APP_PORT
}
});
// Ignore if set.
if (!conf.get('redis')['ignore_vcap_service_creds']) {
// TODO: have it look for /^redis/ to grab the config info
var redisConfig = vcapServices['redis-2.2'][0];
conf.load({
redis: {
host: redisConfig.credentials.hostname,
port: redisConfig.credentials.port,
password: redisConfig.credentials.password
}
});
}
}