TxMetricsCollector.java

/*
 * Copyright © 2012-2014 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.tephra.metrics;

import com.google.common.util.concurrent.AbstractIdleService;
import org.apache.hadoop.conf.Configuration;

/**
 * Metrics Collector Class, to emit Transaction Related Metrics.
 * Note: This default implementation is a no-op and doesn't emit any metrics
 */
public class TxMetricsCollector extends AbstractIdleService implements MetricsCollector {

  @Override
  public void gauge(String metricName, int value, String... tags) {
    //no-op
  }

  @Override
  public void rate(String metricName) {
    // no-op
  }

  @Override
  public void rate(String metricName, int count) {
    // no-op
  }

  @Override
  public void histogram(String metricName, int value) {
    // no-op
  }

  @Override
  public void configure(Configuration conf) {
    // no-op
  }

  /* Service methods */

  @Override
  protected void startUp() throws Exception {
    // no-op
  }

  @Override
  protected void shutDown() throws Exception {
    // no-op
  }
}