e2e-conf - Easy Configuration for E2E Bridge Node.js Services

Description

If you use this module to access your configuration values then you can edit your configuration with a nice UI inside the E2E Bridge. At each deployment for development, testing or production you can change the configuration to match the environment and your needs. Technically it is a wrapper to nconf.

Installation

npm install e2e-conf

Usage

As with all other Node.js modules, you need to require it and then you can read configuration value with get().

var conf = require('e2e-conf');
conf.init(__dirname);

var port = conf.get('host:port');

You must add a JSON file config/default/config.json to your service where you define all possible configuration names and default values. The E2E Bridge will store all changed values to config/local/config.json which overrides the default values.

You can also use command-line arguments or environment variables to change the configuration values. The order is:

1. command-line arguments
2. environment variables
3. changed values in the E2E Bridge (config/local/config.json)
4. default values (config/default/config.json)

If you want to change the configuration from the program you can use set() to change it and save() to store it. The changes are saved to config/local/config.json but only as difference to the default values from the file config/default/config.json.

The absolute file name of the changed values can be accessed with localFile() and the path of the default file with defaultFile().

Do the same without this module

If you don't want to save your changes with save() you could also use the nconf module directly. You still need to use the same paths for the JSON files.

var nconf = require('nconf');
nconf.argv()
    .env('__')
    .file('local', { file: __dirname + '/config/local/config.json') })
    .file('default', { file: __dirname + '/config/default/config.json') });

Changelog

3.0.1 (2018-07-11)

• Fixed missing dependency "argparse".

3.0.0 (2018-07-11)

• The command line interface to update a configuration reads now from a file instead of stdin, because stdin has a size limitation.

License

(The MIT License)

Copyright (c) 2014-2018 Scheer E2E AG

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.