Example of loading a Grails configuration value from etcd

Config.groovy

import groovy.json.JsonSlurper

dataSource {
    // most properties are directly set
    pooled = true
    // ...
    
    // the url is retrieved from etcd...make sure the etcd resource is properly protected
    def jsonSlurper = new JsonSlurper()
    def catalogUrlConfig = jsonSlurper.parseText(new URL("http://etcdlocation:2379/v2/keys/dataSource/url").text)
    url = catalogUrlConfig.node.value
}