Blum

Blum is a configuration document generator used to create Hapi manifest json files using Confidence. It creates a manifest.config.json file through an npm prestart script that Rejoice (the Hapi CLI) can consume on the command line with rejoice -c manifest.config.json.

This could be used for quick A/B testing at a high level or for simple things such as environment based server configuration.

While this was developed to be used in conjunction with a Hapi it can be used anywhere to auto generate a configuration.json based on the Confidence style criteria.

Command Line

Blum takes the following flag options:

• -c - a required file path for criteria.js to be used by confidence.
• -m - a required file path for manifest.js to be edited by confidence and consumed by Hapi.
• -f - an optional output file name/path, defaults to ./manifest.config.json

Example

Use it straight from the command line:

$ blum -c criteria.js -m manifest.js -f manifest.config.json

Use it as a script in your package.json before calling Hapi:

"prestart":  "blum -c config/criteria.js -m config/manifest.js -f config.json"
"start":      "rejoice -c manifest.config.json"

More examples

There is an example directory which contains a mock package.json file. Running $ npm start from within this folder will generate a manifest config file based on the details being passed from the package.json file. After it's created it will then run a Hapi server via the Rejoice CLI.

You can modify these settings as you like. If you add an environment variable before the call you will see a different manifest config file generated, this is the magic of Confidence.

Criteria & Manifest files

Ensure that your criteria.js and manifest.js files both export a valid object that can be consumed by Confidence. Please check their docs for more details on this.

Example Criteria.js

module.exports = {
    env: process.env.ENVIRONMENT
};

Example Manifest.js

The below example prettifies the jade html by default but when run in a production environment the html is minified.

module.exports = {
    connections: [
        {
            port: 3000,
            labels: [
                'http'
            ]
        }
    ],
    server: {},
    plugins: {
        visionary: {
            engines: {
                jade: 'jade'
            },
            path: './views',
            compileOptions: {
                $filter: 'env',
                production: {
                    pretty: false
                },
                $default: {
                    pretty: true
                }
            }
        }
    }
};