content: /**
   * 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 backtype.storm.metric;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import java.util.Collection;
  import java.util.Map;
  
  import backtype.storm.metric.api.IMetricsConsumer;
  import backtype.storm.task.IErrorReporter;
  import backtype.storm.task.TopologyContext;
  
  /*
   * Listens for all metrics, dumps them to log
   *
   * To use, add this to your topology's configuration:
   *   conf.registerMetricsConsumer(backtype.storm.metrics.LoggingMetricsConsumer.class, 1);
   *
   * Or edit the storm.yaml config file:
   *
   *   topology.metrics.consumer.register:
   *     - class: "backtype.storm.metrics.LoggingMetricsConsumer"
   *       parallelism.hint: 1
   *
   */
  @Deprecated
  public class LoggingMetricsConsumer implements IMetricsConsumer {
      public static final Logger LOG = LoggerFactory.getLogger(LoggingMetricsConsumer.class);
  
      @Override
      public void prepare(Map stormConf, Object registrationArgument, TopologyContext context, IErrorReporter errorReporter) {
      }
  
      static private String padding = "                       ";
  
      @Override
      public void handleDataPoints(TaskInfo taskInfo, Collection<DataPoint> dataPoints) {
          StringBuilder sb = new StringBuilder();
          String header =
                  String.format("%d\t%15s:%-4d\t%3d:%-11s\t",
                          taskInfo.timestamp, taskInfo.srcWorkerHost, taskInfo.srcWorkerPort,
                          taskInfo.srcTaskId, taskInfo.srcComponentId);
          sb.append(header);
          for (DataPoint p : dataPoints) {
              sb.delete(header.length(), sb.length());
              sb.append(p.name).append(padding).delete(header.length() + 23, sb.length()).append("\t").append(p.value);
              LOG.info(sb.toString());
          }
      }
  
      @Override
      public void cleanup() {
      }
  }
  