/*
    * 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.validationframework.interceptor;
  
  
  import java.io.DataOutputStream;
  import java.io.File;
  import java.io.FileNotFoundException;
  import java.io.FileOutputStream;
  import java.io.IOException;
  import java.util.HashMap;
  import java.util.Iterator;
  import org.apache.hadoop.chukwa.Chunk;
  
  public class ChunkDumper {
    static public String testRepositoryDumpDir = "/tmp/chukwaDump/";
    static HashMap<String, DataOutputStream> hash = new HashMap<String, DataOutputStream>();
  
    public static void dump(String component, Chunk chunk) {
  
      String fileName = chunk.getStreamName();
  
      if (!hash.containsKey(component + "-" + fileName)) {
        File directory = new File(testRepositoryDumpDir + "/" + component);
        if (!directory.exists()) {
          directory.mkdirs();
        }
        String name = fileName;
        if (fileName.indexOf("/") >= 0) {
          name = fileName.substring(fileName.lastIndexOf("/"));
        }
        name += ".bin";
  
        synchronized (name.intern()) {
          System.out.println("FileName [" + name + "]");
          try {
            DataOutputStream dos = new DataOutputStream(new FileOutputStream(
                new File(testRepositoryDumpDir + "/" + component + "/" + name)));
            System.out.println("Writing to [" + testRepositoryDumpDir + "/"
                + component + "/" + name + "]");
            hash.put(component + "-" + fileName, dos);
          } catch (FileNotFoundException e) {
            e.printStackTrace();
          }
        }
      }
      String key = component + "-" + fileName;
      synchronized (key.intern()) {
        DataOutputStream dos = hash.get(key);
        try {
          chunk.write(dos);
          dos.flush();
        } catch (IOException e) {
          e.printStackTrace();
        }
      }
    }
  
    static void close() {
      Iterator<String> it = hash.keySet().iterator();
      while (it.hasNext()) {
        String key = it.next();
        DataOutputStream dos = hash.get(key);
        try {
          dos.close();
        } catch (Exception e) {
          e.printStackTrace();
        }
      }
    }
  }