content: /*
   * Copyright 2015 Michal Harish, michal.harish@gmail.com
   *
   * 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 io.amient.kafka.metrics;
  
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import java.io.FileInputStream;
  import java.io.IOException;
  import java.util.Properties;
  
  public class KafkaMetricsAgent {
  
      private static Logger log = LoggerFactory.getLogger(KafkaMetricsAgent.class);
  
      public static void main(String[] args) {
          try {
              java.util.Properties props = new java.util.Properties();
              if (args.length == 0) {
                  props.load(System.in);
                  log.info("Configuring KafkaMetricsAgent from STDIN");
              } else {
                  log.info("Configuring KafkaMetricsAgent from property file: " + args[0]);
                  props.load(new FileInputStream(args[0]));
              }
              props.list(System.out);
              try {
                  ProducerPublisher publisher = props.containsKey(ProducerPublisher.CONFIG_METRICS_TOPIC) ? new ProducerPublisher(props) : null;
                  if (publisher != null) {
                      publisher.addProducerShutdownHook();
                  }
                  JMXScanner scanner = new JMXScanner(props, publisher);
                  while (!scanner.isTerminated()) {
                      Thread.sleep(5000);
                  }
              } catch (Throwable e) {
                  log.error("Failed to launch KafkaMetrics JMX Scanner", e);
              }
  
          } catch (IOException e) {
              e.printStackTrace();
              System.exit(1);
          }
      }
  
  }
  