org.apache.druid.emitter.ambari.metrics.AmbariMetricsEmitterModule.java Source code

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Here is the source code for org.apache.druid.emitter.ambari.metrics.AmbariMetricsEmitterModule.java

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/*
 * 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.druid.emitter.ambari.metrics;

import com.fasterxml.jackson.databind.Module;
import com.google.common.base.Function;
import com.google.common.collect.Lists;
import com.google.inject.Binder;
import com.google.inject.Injector;
import com.google.inject.Key;
import com.google.inject.Provides;
import com.google.inject.name.Named;
import com.google.inject.name.Names;
import org.apache.druid.guice.JsonConfigProvider;
import org.apache.druid.guice.ManageLifecycle;
import org.apache.druid.initialization.DruidModule;
import org.apache.druid.java.util.emitter.core.Emitter;

import java.util.Collections;
import java.util.List;

public class AmbariMetricsEmitterModule implements DruidModule {
    private static final String EMITTER_TYPE = "ambari-metrics";

    @Override
    public List<? extends Module> getJacksonModules() {
        return Collections.EMPTY_LIST;
    }

    @Override
    public void configure(Binder binder) {
        JsonConfigProvider.bind(binder, "druid.emitter." + EMITTER_TYPE, AmbariMetricsEmitterConfig.class);
    }

    @Provides
    @ManageLifecycle
    @Named(EMITTER_TYPE)
    public Emitter getEmitter(AmbariMetricsEmitterConfig emitterConfig, final Injector injector) {
        List<Emitter> emitters = Lists.transform(emitterConfig.getAlertEmitters(), new Function<String, Emitter>() {
            @Override
            public Emitter apply(String s) {
                return injector.getInstance(Key.get(Emitter.class, Names.named(s)));
            }
        });
        return new AmbariMetricsEmitter(emitterConfig, emitters);
    }
}