script to wait until the resource is ready state.

waitUntilResourceIsReady.groovy

// requires classpath 'org.codehaus.groovy.modules.http-builder:http-builder:0.6'

/**
 * Wait until the resource is ready state.
 */
def waitUntilResourceIsReady(String resource) {
  def http = new groovyx.net.http.HTTPBuilder(resource)
	def check = {
		try {
			http.get(contentType: groovyx.net.http.ContentType.TEXT)
			true
		} catch(IOException e) {
			logger.warn "Waiting for ${resource}: ${e.localizedMessage}"
			false
		}
	}
	Thread.sleep(1000L)
	while (!check()) {
		Thread.sleep(1000L)
	}
}