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/*
 * Druid - a distributed column store.
 * Copyright 2012 - 2015 Metamarkets Group Inc.
 *
 * Licensed 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 io.druid.cli;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.google.common.collect.ImmutableList;
import com.google.inject.Binder;
import com.google.inject.Module;
import com.google.inject.Provides;
import com.google.inject.name.Names;
import com.metamx.common.concurrent.ScheduledExecutorFactory;
import com.metamx.common.logger.Logger;
import io.airlift.command.Command;
import io.druid.client.indexing.IndexingServiceClient;
import io.druid.guice.ConfigProvider;
import io.druid.guice.Jerseys;
import io.druid.guice.JsonConfigProvider;
import io.druid.guice.LazySingleton;
import io.druid.guice.LifecycleModule;
import io.druid.guice.ManageLifecycle;
import io.druid.metadata.MetadataRuleManager;
import io.druid.metadata.MetadataRuleManagerConfig;
import io.druid.metadata.MetadataRuleManagerProvider;
import io.druid.metadata.MetadataSegmentManager;
import io.druid.metadata.MetadataSegmentManagerConfig;
import io.druid.metadata.MetadataSegmentManagerProvider;
import io.druid.metadata.MetadataStorage;
import io.druid.metadata.MetadataStorageProvider;
import io.druid.audit.AuditManager;
import io.druid.server.audit.AuditManagerProvider;
import io.druid.server.coordinator.DruidCoordinator;
import io.druid.server.coordinator.DruidCoordinatorConfig;
import io.druid.server.coordinator.LoadQueueTaskMaster;
import io.druid.server.http.CoordinatorDynamicConfigsResource;
import io.druid.server.http.CoordinatorRedirectInfo;
import io.druid.server.http.CoordinatorResource;
import io.druid.server.http.DatasourcesResource;
import io.druid.server.http.MetadataResource;
import io.druid.server.http.RedirectFilter;
import io.druid.server.http.RedirectInfo;
import io.druid.server.http.RulesResource;
import io.druid.server.http.ServersResource;
import io.druid.server.http.TiersResource;
import io.druid.server.initialization.jetty.JettyServerInitializer;
import io.druid.server.router.TieredBrokerConfig;
import org.apache.curator.framework.CuratorFramework;
import org.eclipse.jetty.server.Server;

import java.util.List;
import java.util.concurrent.Executors;

/**
 */
@Command(
    name = "coordinator",
    description = "Runs the Coordinator, see http://druid.io/docs/latest/Coordinator.html for a description."
)
public class CliCoordinator extends ServerRunnable
{
  private static final Logger log = new Logger(CliCoordinator.class);

  public CliCoordinator()
  {
    super(log);
  }

  @Override
  protected List getModules()
  {
    return ImmutableList.of(
        new Module()
        {
          @Override
          public void configure(Binder binder)
          {
            binder.bindConstant().annotatedWith(Names.named("serviceName")).to(TieredBrokerConfig.DEFAULT_COORDINATOR_SERVICE_NAME);
            binder.bindConstant().annotatedWith(Names.named("servicePort")).to(8081);

            ConfigProvider.bind(binder, DruidCoordinatorConfig.class);

            binder.bind(MetadataStorage.class)
                  .toProvider(MetadataStorageProvider.class)
                  .in(ManageLifecycle.class);

            JsonConfigProvider.bind(binder, "druid.manager.segments", MetadataSegmentManagerConfig.class);
            JsonConfigProvider.bind(binder, "druid.manager.rules", MetadataRuleManagerConfig.class);

            binder.bind(RedirectFilter.class).in(LazySingleton.class);
            binder.bind(RedirectInfo.class).to(CoordinatorRedirectInfo.class).in(LazySingleton.class);

            binder.bind(MetadataSegmentManager.class)
                  .toProvider(MetadataSegmentManagerProvider.class)
                  .in(ManageLifecycle.class);

            binder.bind(MetadataRuleManager.class)
                  .toProvider(MetadataRuleManagerProvider.class)
                  .in(ManageLifecycle.class);

            binder.bind(AuditManager.class)
                  .toProvider(AuditManagerProvider.class)
                  .in(ManageLifecycle.class);

            binder.bind(IndexingServiceClient.class).in(LazySingleton.class);

            binder.bind(DruidCoordinator.class);

            LifecycleModule.register(binder, MetadataStorage.class);
            LifecycleModule.register(binder, DruidCoordinator.class);

            binder.bind(JettyServerInitializer.class)
                  .to(CoordinatorJettyServerInitializer.class);

            Jerseys.addResource(binder, CoordinatorResource.class);
            Jerseys.addResource(binder, CoordinatorDynamicConfigsResource.class);
            Jerseys.addResource(binder, TiersResource.class);
            Jerseys.addResource(binder, RulesResource.class);
            Jerseys.addResource(binder, ServersResource.class);
            Jerseys.addResource(binder, DatasourcesResource.class);
            Jerseys.addResource(binder, MetadataResource.class);

            LifecycleModule.register(binder, Server.class);
          }

          @Provides
          @LazySingleton
          public LoadQueueTaskMaster getLoadQueueTaskMaster(
              CuratorFramework curator,
              ObjectMapper jsonMapper,
              ScheduledExecutorFactory factory,
              DruidCoordinatorConfig config
          )
          {
            return new LoadQueueTaskMaster(
                curator, jsonMapper, factory.create(1, "Master-PeonExec--%d"),
                Executors.newSingleThreadExecutor(), config
            );
          }
        }
    );
  }
}