core/src/test/java/org/apache/hadoop/chukwa/validationframework/interceptor/ChunkDumper.java

/*
 * 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();
      }
    }
  }
}