Ant example source code file (ScpToMessageBySftp.java)

This example Ant source code file (ScpToMessageBySftp.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Ant tags/keywords

directory, directory, file, file, io, ioexception, ioexception, iterator, jschexception, list, scptomessagebysftp, session, sftpexception, string, string, util

The ScpToMessageBySftp.java source code

/*
 *  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.tools.ant.taskdefs.optional.ssh;

import com.jcraft.jsch.Session;
import com.jcraft.jsch.ChannelSftp;
import com.jcraft.jsch.JSchException;
import com.jcraft.jsch.SftpException;
import com.jcraft.jsch.SftpProgressMonitor;

import java.io.File;
import java.io.IOException;
import java.util.List;
import java.util.Iterator;

/**
 * Utility class to carry out an upload by sftp.
 */
public class ScpToMessageBySftp extends ScpToMessage/*AbstractSshMessage*/ {

    private File localFile;
    private String remotePath;
    private List directoryList;

    /**
     * Constructor for a local file to remote.
     * @param verbose if true do verbose logging
     * @param session the scp session to use
     * @param aLocalFile the local file
     * @param aRemotePath the remote path
     * @since Ant 1.7
     */
    public ScpToMessageBySftp(boolean verbose,
                              Session session,
                              File aLocalFile,
                              String aRemotePath) {
        this(verbose, session, aRemotePath);

        this.localFile = aLocalFile;
    }

    /**
     * Constructor for a local directories to remote.
     * @param verbose if true do verbose logging
     * @param session the scp session to use
     * @param aDirectoryList a list of directories
     * @param aRemotePath the remote path
     * @since Ant 1.7
     */
    public ScpToMessageBySftp(boolean verbose,
                              Session session,
                              List aDirectoryList,
                              String aRemotePath) {
        this(verbose, session, aRemotePath);

        this.directoryList = aDirectoryList;
    }

    /**
     * Constructor for ScpToMessage.
     * @param verbose if true do verbose logging
     * @param session the scp session to use
     * @param aRemotePath the remote path
     * @since Ant 1.6.2
     */
    private ScpToMessageBySftp(boolean verbose,
                               Session session,
                               String aRemotePath) {
        super(verbose, session);
        this.remotePath = aRemotePath;
    }

    /**
     * Constructor for ScpToMessage.
     * @param session the scp session to use
     * @param aLocalFile the local file
     * @param aRemotePath the remote path
     */
    public ScpToMessageBySftp(Session session,
                              File aLocalFile,
                              String aRemotePath) {
        this(false, session, aLocalFile, aRemotePath);
    }

    /**
     * Constructor for ScpToMessage.
     * @param session the scp session to use
     * @param aDirectoryList a list of directories
     * @param aRemotePath the remote path
     */
    public ScpToMessageBySftp(Session session,
                              List aDirectoryList,
                              String aRemotePath) {
        this(false, session, aDirectoryList, aRemotePath);
    }

    /**
     * Carry out the transfer.
     * @throws IOException on i/o errors
     * @throws JSchException on errors detected by scp
     */
    public void execute() throws IOException, JSchException {
        if (directoryList != null) {
            doMultipleTransfer();
        }
        if (localFile != null) {
            doSingleTransfer();
        }
        log("done.\n");
    }

    private void doSingleTransfer() throws IOException, JSchException {
        ChannelSftp channel = openSftpChannel();
        try {
            channel.connect();
            try {
                sendFileToRemote(channel, localFile, remotePath);
            } catch (SftpException e) {
                throw new JSchException(e.toString());
            }
        } finally {
            if (channel != null) {
                channel.disconnect();
            }
        }
    }

    private void doMultipleTransfer() throws IOException, JSchException {
        ChannelSftp channel = openSftpChannel();
        try {
            channel.connect();

            try {
                channel.cd(remotePath);
                for (Iterator i = directoryList.iterator(); i.hasNext();) {
                    Directory current = (Directory) i.next();
                    sendDirectory(channel, current);
                }
            } catch (SftpException e) {
                throw new JSchException(e.toString());
            }
        } finally {
            if (channel != null) {
                channel.disconnect();
            }
        }
    }

    private void sendDirectory(ChannelSftp channel,
                               Directory current)
        throws IOException, SftpException {
        for (Iterator fileIt = current.filesIterator(); fileIt.hasNext();) {
            sendFileToRemote(channel, (File) fileIt.next(), null);
        }
        for (Iterator dirIt = current.directoryIterator(); dirIt.hasNext();) {
            Directory dir = (Directory) dirIt.next();
            sendDirectoryToRemote(channel, dir);
        }
    }

    private void sendDirectoryToRemote(ChannelSftp channel,
                                       Directory directory)
        throws IOException, SftpException {
        String dir = directory.getDirectory().getName();
        try {
            channel.stat(dir);
        } catch (SftpException e) {
            // dir does not exist.
            if (e.id == ChannelSftp.SSH_FX_NO_SUCH_FILE) {
                channel.mkdir(dir);
            }
        }
        channel.cd(dir);
        sendDirectory(channel, directory);
        channel.cd("..");
    }

    private void sendFileToRemote(ChannelSftp channel,
                                  File localFile,
                                  String remotePath)
        throws IOException, SftpException {
        long filesize = localFile.length();

        if (remotePath == null) {
            remotePath = localFile.getName();
        }

        long startTime = System.currentTimeMillis();
        long totalLength = filesize;

        // only track progress for files larger than 100kb in verbose mode
        boolean trackProgress = getVerbose() && filesize > 102400;

        SftpProgressMonitor monitor = null;
        if (trackProgress) {
            monitor = getProgressMonitor();
        }

        try {
            if (this.getVerbose()) {
                log("Sending: " + localFile.getName() + " : " + filesize);
            }
            channel.put(localFile.getAbsolutePath(), remotePath, monitor);
        } finally {
            if (this.getVerbose()) {
                long endTime = System.currentTimeMillis();
                logStats(startTime, endTime, (int) totalLength);
            }
        }
    }

    /**
     * Get the local file.
     * @return the local file.
     */
    public File getLocalFile() {
        return localFile;
    }

    /**
     * Get the remote path.
     * @return the remote path.
     */
    public String getRemotePath() {
        return remotePath;
    }
}