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 com.alibaba.jstorm.dfs;
  
  import java.io.IOException;
  import java.util.Collection;
  
  /**
   * Interface for distributed file system, e.g. HDFS
   */
  public interface IDfs {
      public String getBaseDir();
  
      public void create(String dstPath, byte[] data) throws IOException;
  
      public byte[] read(String dstPath) throws IOException;
  
      public Collection<String> readLines(String dstPath) throws IOException;
  
      public boolean exist(String path) throws IOException;
  
      public void mkdir(String dstDir) throws IOException;
  
      public boolean remove(String dstPath, boolean recursive) throws IOException;
  
      public void copyToDfs(String srcPath, String dstPath, boolean overwrite) throws IOException;
  
      public void copyToLocal(String srcPath, String dstPath) throws IOException;
  
      public Collection<String> listFile(String dstPath, boolean recursive) throws IOException;
  
      public void close();
  }