001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017
018package org.apache.commons.net.io;
019
020import java.io.IOException;
021
022/**
023 * The CopyStreamException class is thrown by the org.apache.commons.io.Util copyStream() methods. It stores the number of bytes confirmed to have been
024 * transferred before an I/O error as well as the IOException responsible for the failure of a copy operation.
025 *
026 * @see Util
027 */
028public class CopyStreamException extends IOException {
029    private static final long serialVersionUID = -2602899129433221532L;
030
031    private final long totalBytesTransferred;
032
033    /**
034     * Creates a new CopyStreamException instance.
035     *
036     * @param message          A message describing the error.
037     * @param bytesTransferred The total number of bytes transferred before an exception was thrown in a copy operation.
038     * @param exception        The IOException thrown during a copy operation.
039     */
040    public CopyStreamException(final String message, final long bytesTransferred, final IOException exception) {
041        super(message);
042        initCause(exception); // merge this into super() call once we need 1.6+
043        totalBytesTransferred = bytesTransferred;
044    }
045
046    /**
047     * Returns the IOException responsible for the failure of a copy operation.
048     *
049     * @return The IOException responsible for the failure of a copy operation.
050     */
051    public IOException getIOException() {
052        return (IOException) getCause(); // cast is OK because it was initialized with an IOException
053    }
054
055    /**
056     * Returns the total number of bytes confirmed to have been transferred by a failed copy operation.
057     *
058     * @return The total number of bytes confirmed to have been transferred by a failed copy operation.
059     */
060    public long getTotalBytesTransferred() {
061        return totalBytesTransferred;
062    }
063}