MetricsTwillRunnable.java

/*
 * Copyright © 2014-2015 Cask Data, 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 co.cask.cdap.metrics.runtime;

import co.cask.cdap.api.metrics.MetricsCollectionService;
import co.cask.cdap.common.conf.CConfiguration;
import co.cask.cdap.common.conf.Constants;
import co.cask.cdap.common.guice.ConfigModule;
import co.cask.cdap.common.guice.DiscoveryRuntimeModule;
import co.cask.cdap.common.guice.IOModule;
import co.cask.cdap.common.guice.KafkaClientModule;
import co.cask.cdap.common.guice.LocationRuntimeModule;
import co.cask.cdap.common.guice.ZKClientModule;
import co.cask.cdap.common.logging.LoggingContextAccessor;
import co.cask.cdap.common.logging.ServiceLoggingContext;
import co.cask.cdap.common.twill.AbstractMasterTwillRunnable;
import co.cask.cdap.data.runtime.DataFabricModules;
import co.cask.cdap.data.runtime.DataSetsModules;
import co.cask.cdap.data2.audit.AuditModule;
import co.cask.cdap.logging.appender.LogAppenderInitializer;
import co.cask.cdap.logging.guice.LoggingModules;
import co.cask.cdap.metrics.guice.MetricsClientRuntimeModule;
import co.cask.cdap.metrics.guice.MetricsHandlerModule;
import co.cask.cdap.metrics.query.MetricsQueryService;
import co.cask.cdap.proto.Id;
import com.google.common.base.Throwables;
import com.google.common.util.concurrent.Service;
import com.google.inject.Guice;
import com.google.inject.Injector;
import org.apache.hadoop.conf.Configuration;
import org.apache.twill.api.TwillContext;
import org.apache.twill.kafka.client.KafkaClientService;
import org.apache.twill.zookeeper.ZKClientService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.List;

/**
 * TwillRunnable to run Metrics Service through twill.
 */
public class MetricsTwillRunnable extends AbstractMasterTwillRunnable {
  private static final Logger LOG = LoggerFactory.getLogger(MetricsTwillRunnable.class);

  private MetricsQueryService metricsQueryService;
  private ZKClientService zkClient;
  private KafkaClientService kafkaClient;
  private MetricsCollectionService metricsCollectionService;

  public MetricsTwillRunnable(String name, String cConfName, String hConfName) {
    super(name, cConfName, hConfName);
  }

  @Override
  protected void doInit(TwillContext context) {
    try {
      // Set the hostname of the machine so that cConf can be used to start internal services
      getCConfiguration().set(Constants.Metrics.ADDRESS, context.getHost().getCanonicalHostName());

      Injector injector = createGuiceInjector(getCConfiguration(), getConfiguration());
      injector.getInstance(LogAppenderInitializer.class).initialize();

      LoggingContextAccessor.setLoggingContext(new ServiceLoggingContext(Id.Namespace.SYSTEM.getId(),
                                                                         Constants.Logging.COMPONENT_NAME,
                                                                         Constants.Service.METRICS));

      LOG.info("Initializing runnable {}", name);
      LOG.info("{} Setting host name to {}", name, context.getHost().getCanonicalHostName());

      zkClient = injector.getInstance(ZKClientService.class);
      kafkaClient = injector.getInstance(KafkaClientService.class);

      // Get the Metric Services
      metricsQueryService = injector.getInstance(MetricsQueryService.class);
      metricsCollectionService = injector.getInstance(MetricsCollectionService.class);

      LOG.info("Runnable initialized {}", name);
    } catch (Throwable t) {
      LOG.error(t.getMessage(), t);
      throw Throwables.propagate(t);
    }
  }

  @Override
  public void getServices(List<? super Service> services) {
    services.add(zkClient);
    services.add(kafkaClient);
    services.add(metricsCollectionService);
    services.add(metricsQueryService);
  }

  public static Injector createGuiceInjector(CConfiguration cConf, Configuration hConf) {
    return Guice.createInjector(
      new ConfigModule(cConf, hConf),
      new IOModule(),
      new ZKClientModule(),
      new KafkaClientModule(),
      new DataFabricModules().getDistributedModules(),
      new DataSetsModules().getDistributedModules(),
      new LocationRuntimeModule().getDistributedModules(),
      new DiscoveryRuntimeModule().getDistributedModules(),
      new LoggingModules().getDistributedModules(),
      new MetricsHandlerModule(),
      new MetricsClientRuntimeModule().getDistributedModules(),
      new AuditModule().getDistributedModules()
    );
  }
}