/*
* JBoss, Home of Professional Open Source
* Copyright 2011 Red Hat Inc. and/or its affiliates and other
* contributors as indicated by the @author tags. All rights reserved.
* See the copyright.txt in the distribution for a full listing of
* individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.infinispan.visualizer.poller.infinispan;

import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Set;

import javax.management.ObjectName;
import javax.management.remote.JMXServiceURL;

import org.infinispan.visualizer.poller.jmx.JmxPoller;

/**
 * @author <a href="mailto:rtsang@redhat.com">Ray Tsang</a>
 */
public class JdgJmxCacheNamesPoller extends JmxPoller<String[]> {
   private static final String ATTRIBUTE = "cacheName";

   public JdgJmxCacheNamesPoller(JMXServiceURL jmxUrl,
                                 Map<String, Object> jmxEnv) {
      super(jmxUrl, jmxEnv);
   }

   @Override
   protected String[] doPoll() throws Exception {
      Set<ObjectName> objectNames = getConnection().queryNames(new ObjectName("jboss.datagrid-infinispan:type=Cache,name=*,manager=\"clustered\",component=Cache"), null);
      if (objectNames == null) return null;

      List<String> names = new LinkedList<>();

      for (ObjectName objectName : objectNames) {
         String name = (String) getConnection().getAttribute(objectName, ATTRIBUTE);
         if (name == null)
            continue;

         // ignore internal caches, such ___hotRodTopologyCache
         if (name.startsWith("___"))
            continue;

         names.add(name);
      }
      return names.toArray(new String[]{});
   }

}