server/src/main/java/io/druid/guice/DruidBinders.java

/*
 * Licensed to Metamarkets Group Inc. (Metamarkets) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. Metamarkets 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 io.druid.guice;

import com.google.inject.Binder;
import com.google.inject.TypeLiteral;
import com.google.inject.multibindings.MapBinder;
import com.google.inject.multibindings.Multibinder;
import io.druid.java.util.metrics.Monitor;
import io.druid.query.Query;
import io.druid.query.QueryRunnerFactory;
import io.druid.query.QueryToolChest;
import io.druid.server.DruidNode;

/**
 */
public class DruidBinders
{
  public static MapBinder<Class<? extends Query>, QueryRunnerFactory> queryRunnerFactoryBinder(Binder binder)
  {
    return MapBinder.newMapBinder(
        binder, new TypeLiteral<Class<? extends Query>>(){}, TypeLiteral.get(QueryRunnerFactory.class)
    );
  }

  public static MapBinder<Class<? extends Query>, QueryToolChest> queryToolChestBinder(Binder binder)
  {
    return MapBinder.newMapBinder(
        binder, new TypeLiteral<Class<? extends Query>>(){}, new TypeLiteral<QueryToolChest>(){}
    );
  }

  public static Multibinder<KeyHolder<DruidNode>> discoveryAnnouncementBinder(Binder binder)
  {
    return Multibinder.newSetBinder(binder, new TypeLiteral<KeyHolder<DruidNode>>(){});
  }

  public static Multibinder<Class<? extends Monitor>> metricMonitorBinder(Binder binder)
  {
    return Multibinder.newSetBinder(binder, new TypeLiteral<Class<? extends Monitor>>(){});
  }
}