service-url-finder

Get the URL for a service from the environment, either through Docker or overrides.

Installation

npm install --save service-url-finder

Usage

export REDIS_URL=redis://my.redis.host:6379

var serviceUrlFinder = require('service-url-finder'):
console.log(serviceUrlFinder('redis', 6379)); // "redis://my.redis.host:6379"

Signature

function serviceUrlFinder(name, defaultPort, defaultHost, defaultProtocol) { ... }

Behavior

service-url-finder first checks process.env for an environment variable named SERVICE_NAME_URL and returns that.

If none is found, it checks for environment variables of the type Docker sets with links (i.e., SERVICE_NAME_PORT_999_TCP) and tries those.

Finally, it generates a string based on defaults that either you supply or it infers.

So assuming no environment variables, the call serviceUrlFinder('something-cool', 9999) will return something-cool://127.0.0.1:9999.

License

ISC.