Description

Lightweight configuration engine for node.js

Allows you to have a common configuration file with an ability to override particular settings in host-specific configuratin files.

Dependencies

• node-utils

How it works

For example, certain settings, like name of your application, does not depend on the environment (production/dev/CI), hence never changes:

conf/common.js: exports.conf = { name: 'My Super Awesome Kick Ass Startup' }

but the connection string to the database is different in case of CI/Dev/Production machines:

conf/ci-hostname.js: exports.conf = { db_connection: 'ci.mongo-db.local' }

conf/my-dev.js: exports.conf = { db_connection: 'localhost' }

conf/linode.beefed-up.server.com.js: exports.conf = { db_connection: 'nosql-super-clustered-cloud-database' }

where ci-hostname/my-dev/linode.beefed-up.server.com are corresponding hostnames.

Node-config will load common configuration values and then override them with appropriate values from host-specific config file.

Example

Loading of configuration is as simple as this:

var conf = require('node-config'),
    sys = require('sys');

function main(opts) {
    console.log(opts.dbConnection);
}

conf.init(__dirname + '/conf', function(err, opts) {
    err ?
        console.log('Could not load config: ' + err) :
        main(opts);
});

Setup

You need to have a directory which contains a common.js file with the following format:

exports.conf = {
    name: 'value',
    // ...
    name_m: 'value M'
};

If you wish to add host-specific config files, execute hostname from command line to find out what your hostname is and name your config file accordingly.

Please see node-config/conf/* and node-config/test.js for examples.

Thanks!

License

The MIT License

Copyright (c) 2010 by Art Skvira

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.