/*
    * 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.hadoop.chukwa.datacollection.test;
  
  
  import org.apache.hadoop.chukwa.Chunk;
  import org.apache.hadoop.chukwa.datacollection.*;
  import org.apache.hadoop.chukwa.datacollection.agent.*;
  import org.apache.hadoop.chukwa.datacollection.connector.Connector;
  
  import java.nio.charset.Charset;
  import java.util.*;
  
  /**
   * Output events to stdout. Intended for debugging use.
   * 
   */
  public class ConsoleOutConnector extends Thread implements Connector {
  
    final ChukwaAgent agent;
    volatile boolean shutdown;
    final boolean silent;
  
    public ConsoleOutConnector(ChukwaAgent a) {
      this(a, false);
    }
  
    public ConsoleOutConnector(ChukwaAgent a, boolean silent) {
      agent = a;
      this.silent = silent;
    }
  
    public void run() {
      try {
        System.out.println("console connector started");
        ChunkQueue eventQueue = DataFactory.getInstance().getEventQueue();
        if (!silent)
          System.out.println("-------------------");
  
        while (!shutdown) {
          List<Chunk> evts = new ArrayList<Chunk>();
          eventQueue.collect(evts, 1);
  
          for (Chunk e : evts) {
            if (!silent) {
              System.out.println("Console out connector got event at offset "
                  + e.getSeqID());
              System.out.println("data type was " + e.getDataType());
              if (e.getData().length > 1000)
                System.out.println("data length was " + e.getData().length
                    + ", not printing");
              else
                System.out.println(new String(e.getData(), Charset.forName("UTF-8")));
            }
  
            agent.reportCommit(e.getInitiator(), e.getSeqID());
  
            if (!silent)
              System.out.println("-------------------");
          }
        }
      } catch (InterruptedException e) {
      } // thread is about to exit anyway
    }
  
    public void shutdown() {
      shutdown = true;
      this.interrupt();
    }
  
    @Override
    public void reloadConfiguration() {
      System.out.println("reloadConfiguration");
    }
  
  }