/**
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you under the Apache License, Version 2.0 (the
    * "License"); you may not use this file except in compliance
    * with the License.  You may obtain a copy of the License at
    *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package org.apache.hadoop.hbase.replication;
  
  import static org.junit.Assert.assertFalse;
  import static org.junit.Assert.assertTrue;
  
  import java.io.IOException;
  
  import org.apache.commons.logging.Log;
  import org.apache.commons.logging.LogFactory;
  import org.apache.hadoop.conf.Configuration;
  import org.apache.hadoop.hbase.ChoreService;
  import org.apache.hadoop.hbase.ClusterId;
  import org.apache.hadoop.hbase.CoordinatedStateManager;
  import org.apache.hadoop.hbase.HBaseTestingUtility;
  import org.apache.hadoop.hbase.HConstants;
  import org.apache.hadoop.hbase.Server;
  import org.apache.hadoop.hbase.ServerName;
  import org.apache.hadoop.hbase.client.ClusterConnection;
  import org.apache.hadoop.hbase.testclassification.MediumTests;
  import org.apache.hadoop.hbase.zookeeper.MetaTableLocator;
  import org.apache.hadoop.hbase.zookeeper.ZKClusterId;
  import org.apache.hadoop.hbase.zookeeper.ZKConfig;
  import org.apache.hadoop.hbase.zookeeper.ZKUtil;
  import org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher;
  import org.apache.zookeeper.KeeperException;
  import org.junit.After;
  import org.junit.AfterClass;
  import org.junit.Before;
  import org.junit.BeforeClass;
  import org.junit.Test;
  import org.junit.experimental.categories.Category;
  
  @Category(MediumTests.class)
  public class TestReplicationStateZKImpl extends TestReplicationStateBasic {
  
    private static final Log LOG = LogFactory.getLog(TestReplicationStateZKImpl.class);
  
    private static Configuration conf;
    private static HBaseTestingUtility utility;
    private static ZooKeeperWatcher zkw;
    private static String replicationZNode;
    private ReplicationQueuesZKImpl rqZK;
  
    @BeforeClass
    public static void setUpBeforeClass() throws Exception {
      utility = new HBaseTestingUtility();
      utility.startMiniZKCluster();
      conf = utility.getConfiguration();
      conf.setBoolean(HConstants.REPLICATION_BULKLOAD_ENABLE_KEY, true);
      zkw = HBaseTestingUtility.getZooKeeperWatcher(utility);
      String replicationZNodeName = conf.get("zookeeper.znode.replication", "replication");
      replicationZNode = ZKUtil.joinZNode(zkw.baseZNode, replicationZNodeName);
      KEY_ONE = initPeerClusterState("/hbase1");
      KEY_TWO = initPeerClusterState("/hbase2");
    }
  
    private static String initPeerClusterState(String baseZKNode)
        throws IOException, KeeperException {
      // Add a dummy region server and set up the cluster id
      Configuration testConf = new Configuration(conf);
      testConf.set(HConstants.ZOOKEEPER_ZNODE_PARENT, baseZKNode);
      ZooKeeperWatcher zkw1 = new ZooKeeperWatcher(testConf, "test1", null);
      String fakeRs = ZKUtil.joinZNode(zkw1.rsZNode, "hostname1.example.org:1234");
      ZKUtil.createWithParents(zkw1, fakeRs);
      ZKClusterId.setClusterId(zkw1, new ClusterId());
      return ZKConfig.getZooKeeperClusterKey(testConf);
    }
  
    @Before
    @Override
    public void setUp() {
      super.setUp();
      DummyServer ds1 = new DummyServer(server1);
      DummyServer ds2 = new DummyServer(server2);
      DummyServer ds3 = new DummyServer(server3);
      rq1 = ReplicationFactory.getReplicationQueues(zkw, conf, ds1);
      rq2 = ReplicationFactory.getReplicationQueues(zkw, conf, ds2);
      rq3 = ReplicationFactory.getReplicationQueues(zkw, conf, ds3);
      rqc = ReplicationFactory.getReplicationQueuesClient(zkw, conf, ds1);
      rp = ReplicationFactory.getReplicationPeers(zkw, conf, zkw);
      OUR_KEY = ZKConfig.getZooKeeperClusterKey(conf);
     rqZK = new ReplicationQueuesZKImpl(zkw, conf, ds1);
   }
 
   @After
   public void tearDown() throws KeeperException, IOException {
     ZKUtil.deleteNodeRecursively(zkw, replicationZNode);
   }
 
   @AfterClass
   public static void tearDownAfterClass() throws Exception {
     utility.shutdownMiniZKCluster();
   }
 
   @Test
   public void testIsPeerPath_PathToParentOfPeerNode() {
     assertFalse(rqZK.isPeerPath(rqZK.peersZNode));
   }
 
   @Test
   public void testIsPeerPath_PathToChildOfPeerNode() {
     String peerChild = ZKUtil.joinZNode(ZKUtil.joinZNode(rqZK.peersZNode, "1"), "child");
     assertFalse(rqZK.isPeerPath(peerChild));
   }
 
   @Test
   public void testIsPeerPath_ActualPeerPath() {
     String peerPath = ZKUtil.joinZNode(rqZK.peersZNode, "1");
     assertTrue(rqZK.isPeerPath(peerPath));
   }
 
   @Test
   public void testZNodeCversion() throws ReplicationException, KeeperException {
     rq1.init(server1);
 
     assertTrue(rqc.getReplicatorsZNodeCversion().containsKey(server1));
   }
 
   static class DummyServer implements Server {
     private String serverName;
     private boolean isAborted = false;
     private boolean isStopped = false;
 
     public DummyServer(String serverName) {
       this.serverName = serverName;
     }
 
     @Override
     public Configuration getConfiguration() {
       return conf;
     }
 
     @Override
     public ZooKeeperWatcher getZooKeeper() {
       return zkw;
     }
 
     @Override
     public CoordinatedStateManager getCoordinatedStateManager() {
       return null;
     }
 
     @Override
     public ClusterConnection getConnection() {
       return null;
     }
 
     @Override
     public MetaTableLocator getMetaTableLocator() {
       return null;
     }
 
     @Override
     public ServerName getServerName() {
       return ServerName.valueOf(this.serverName);
     }
 
     @Override
     public void abort(String why, Throwable e) {
       LOG.info("Aborting " + serverName);
       this.isAborted = true;
     }
 
     @Override
     public boolean isAborted() {
       return this.isAborted;
     }
 
     @Override
     public void stop(String why) {
       this.isStopped = true;
     }
 
     @Override
     public boolean isStopped() {
       return this.isStopped;
     }
 
     @Override
     public ChoreService getChoreService() {
       return null;
     }
   }
 }