/*
 * Druid - a distributed column store.
 * Copyright (C) 2012, 2013  Metamarkets Group Inc.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */

package io.druid.server.bridge;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.metamx.common.ISE;
import com.metamx.common.concurrent.ScheduledExecutorFactory;
import com.metamx.common.concurrent.ScheduledExecutors;
import com.metamx.common.lifecycle.Lifecycle;
import io.druid.client.BatchServerInventoryView;
import io.druid.client.DruidServer;
import io.druid.client.ServerView;
import io.druid.curator.PotentiallyGzippedCompressionProvider;
import io.druid.curator.announcement.Announcer;
import io.druid.db.DatabaseSegmentManager;
import io.druid.jackson.DefaultObjectMapper;
import io.druid.segment.realtime.DbSegmentPublisher;
import io.druid.server.DruidNode;
import io.druid.server.coordination.BatchDataSegmentAnnouncer;
import io.druid.server.coordination.DruidServerMetadata;
import io.druid.server.initialization.ZkPathsConfig;
import junit.framework.Assert;
import org.apache.curator.framework.CuratorFramework;
import org.apache.curator.framework.CuratorFrameworkFactory;
import org.apache.curator.framework.recipes.leader.LeaderLatch;
import org.apache.curator.retry.ExponentialBackoffRetry;
import org.apache.curator.test.TestingCluster;
import org.easymock.EasyMock;
import org.joda.time.Duration;
import org.junit.Test;

import java.util.Arrays;
import java.util.concurrent.Executor;
import java.util.concurrent.Executors;
import java.util.concurrent.atomic.AtomicReference;

/**
 */
public class DruidClusterBridgeTest
{
  @Test
  public void testRun() throws Exception
  {
    TestingCluster localCluster = new TestingCluster(1);
    localCluster.start();

    CuratorFramework localCf = CuratorFrameworkFactory.builder()
                                                      .connectString(localCluster.getConnectString())
                                                      .retryPolicy(new ExponentialBackoffRetry(1, 10))
                                                      .compressionProvider(
                                                          new PotentiallyGzippedCompressionProvider(
                                                              false
                                                          )
                                                      )
                                                      .build();
    localCf.start();


    TestingCluster remoteCluster = new TestingCluster(1);
    remoteCluster.start();

    CuratorFramework remoteCf = CuratorFrameworkFactory.builder()
                                                       .connectString(remoteCluster.getConnectString())
                                                       .retryPolicy(new ExponentialBackoffRetry(1, 10))
                                                       .compressionProvider(
                                                           new PotentiallyGzippedCompressionProvider(
                                                               false
                                                           )
                                                       )
                                                       .build();
    remoteCf.start();

    ObjectMapper jsonMapper = new DefaultObjectMapper();
    DruidClusterBridgeConfig config = new DruidClusterBridgeConfig()
    {
      @Override
      public String getTier()
      {
        return DruidServer.DEFAULT_TIER;
      }

      @Override
      public Duration getStartDelay()
      {
        return new Duration(0);
      }

      @Override
      public Duration getPeriod()
      {
        return new Duration(Long.MAX_VALUE);
      }

      @Override
      public String getBrokerServiceName()
      {
        return "testz0rz";
      }

      @Override
      public int getPriority()
      {
        return 0;
      }
    };

    ScheduledExecutorFactory factory = ScheduledExecutors.createFactory(new Lifecycle());

    DruidNode me = new DruidNode(
        "me",
        "localhost",
        8080
    );

    AtomicReference<LeaderLatch> leaderLatch = new AtomicReference<>(new LeaderLatch(localCf, "test"));

    ZkPathsConfig zkPathsConfig = new ZkPathsConfig()
    {
      @Override
      public String getZkBasePath()
      {
        return "/druid";
      }
    };
    DruidServerMetadata metadata = new DruidServerMetadata(
        "test",
        "localhost",
        1000,
        "bridge",
        DruidServer.DEFAULT_TIER,
        0
    );
    DbSegmentPublisher dbSegmentPublisher = EasyMock.createMock(DbSegmentPublisher.class);
    DatabaseSegmentManager databaseSegmentManager = EasyMock.createMock(DatabaseSegmentManager.class);
    ServerView serverView = EasyMock.createMock(ServerView.class);
    BridgeZkCoordinator bridgeZkCoordinator = new BridgeZkCoordinator(
        jsonMapper,
        zkPathsConfig,
        metadata,
        remoteCf,
        dbSegmentPublisher,
        databaseSegmentManager,
        serverView
    );

    Announcer announcer = new Announcer(remoteCf, Executors.newSingleThreadExecutor());
    announcer.start();
    announcer.announce(zkPathsConfig.getAnnouncementsPath() + "/" + me.getHost(), jsonMapper.writeValueAsBytes(me));
    BatchDataSegmentAnnouncer batchDataSegmentAnnouncer = EasyMock.createMock(BatchDataSegmentAnnouncer.class);
    BatchServerInventoryView batchServerInventoryView = EasyMock.createMock(BatchServerInventoryView.class);

    EasyMock.expect(batchServerInventoryView.getInventory()).andReturn(
        Arrays.asList(
            new DruidServer("1", "localhost", 117, "historical", DruidServer.DEFAULT_TIER, 0),
            new DruidServer("2", "localhost", 1, "historical", DruidServer.DEFAULT_TIER, 0)
        )
    );
    batchServerInventoryView.registerSegmentCallback(
        EasyMock.<Executor>anyObject(),
        EasyMock.<ServerView.SegmentCallback>anyObject()
    );
    batchServerInventoryView.registerServerCallback(
        EasyMock.<Executor>anyObject(),
        EasyMock.<ServerView.ServerCallback>anyObject()
    );
    EasyMock.expectLastCall();
    batchServerInventoryView.start();
    EasyMock.expectLastCall();
    EasyMock.replay(batchServerInventoryView);


    DruidClusterBridge bridge = new DruidClusterBridge(
        jsonMapper,
        config,
        factory,
        me,
        localCf,
        leaderLatch,
        bridgeZkCoordinator,
        announcer,
        batchDataSegmentAnnouncer,
        batchServerInventoryView
    );

    bridge.start();

    int retry = 0;
    while (!bridge.isLeader()) {
      if (retry > 5) {
        throw new ISE("Unable to become leader");
      }

      Thread.sleep(100);
      retry++;
    }

    String path = "/druid/announcements/localhost:8080";
    retry = 0;
    while (remoteCf.checkExists().forPath(path) == null) {
      if (retry > 5) {
        throw new ISE("Unable to announce");
      }

      Thread.sleep(100);
      retry++;
    }

    DruidServerMetadata announced = jsonMapper.readValue(
        remoteCf.getData().forPath(path),
        DruidServerMetadata.class
    );

    Assert.assertEquals(118, announced.getMaxSize());

    EasyMock.verify(batchServerInventoryView);
  }
}

@@ -7903,15 +7903,154 @@
 ryView);
+%0A%0A    announcer.stop();%0A    bridge.stop();%0A%0A    remoteCf.close();%0A    remoteCluster.close();%0A    localCf.close();%0A    localCluster.close();
 %0A  %7D%0A%7D%0A

fix bridge test