Apache Ambariとgroovyで、サービスを列挙する

Apache Ambariとgroovyで、サービスを列挙するには、以下のようなコードを実行します。

サンプルコード

@Grab(group='org.apache.httpcomponents', module='httpclient', version='4.3.5')
import org.apache.http.client.methods.*
import org.apache.http.impl.client.*
import org.apache.http.message.*
import org.apache.http.auth.*
import groovy.json.*

def host = "192.168.1.249" // replace this
def port = 8080
def user = "admin"
def password = "admin"
def cluster = "cluster1"

def httpclient = new DefaultHttpClient()
httpclient.withCloseable {
  def method = new HttpGet(
    "http://${user}:${password}@${host}:${port}/api/v1/clusters/${cluster}/services?fields=ServiceInfo/state"
  )
  def response = httpclient.execute(method)
  println response.getStatusLine().getStatusCode()

  def json = new JsonSlurper().parseText(response.getEntity().getContent().text)
  for(item in json.items){
    println "service name:${item.ServiceInfo.service_name}"
    println "state:${item.ServiceInfo.state}"
    println "href:${item.href}"
  }
}

動作環境
Apache Ambari 1.6.1, HDP2.1, groovy 2.3.2