Ambari client

在研究如何修改YARN的资源池的时候，发现了Hortwork在github上面开源了一个Ambari Client；

https://github.com/apache/ambari/tree/trunk/ambari-client

不过使用groovy写的；但是没关系，在pom文件中添加了两个依赖之后，mvn package即可（groovy会编译生成jar文件）。不过我是把真个ambari的工程都下载到了本地；如果单独下载一个client，是否能够编译打包并没有尝试。

 <dependency>
     <groupId>org.codehaus.groovy</groupId>
     <artifactId>groovy-eclipse-compiler</artifactId>
     <version>2.9.2-01</version>
     <type>maven-plugin</type>
 </dependency>
 <dependency>
     <groupId>org.codehaus.groovy</groupId>
     <artifactId>groovy-eclipse-batch</artifactId>
     <version>2.4.3-01</version>
 </dependenc>

　　java代码如下，我是尝试访问了一下yarn的schedule属性（资源池）。

 AmbariClient aClient = new AmbariClient("10.1.108.45", "8080", "admin", "admin");
 String typeName = "capacity-scheduler";
 String propertieName = "yarn.scheduler.capacity.root.unfunded.capacity";
 Map<String, Map<String, String>> map = aClient.getServiceConfigMap(typeName);
 for (String key : map.keySet()) {
     System.out.println("key: " + key + ";");
     Map<String, String> kvs = map.get(key);
     for (String name : kvs.keySet()) {
         if (name.equals(propertieName)) {
             System.out.println("name: " + name + "; value: " + kvs.get(name));
         }
     }
 }

 Map<String, String> mapUpdate = new HashMap<String, String>();

 mapUpdate.put(propertieName, "55");
 aClient.modifyConfiguration(typeName, mapUpdate);