Examples with SftpException com.jcraft.jsch.SftpException used on opensource projects

Example 61 with SftpException

use of com.jcraft.jsch.SftpException in project hadoop by apache.

the class SFTPFileSystem method rename.

/**
   * Convenience method, so that we don't open a new connection when using this
   * method from within another method. Otherwise every API invocation incurs
   * the overhead of opening/closing a TCP connection.
   *
   * @param channel
   * @param src
   * @param dst
   * @return rename successful?
   * @throws IOException
   */
private boolean rename(ChannelSftp channel, Path src, Path dst) throws IOException {
    Path workDir;
    try {
        workDir = new Path(channel.pwd());
    } catch (SftpException e) {
        throw new IOException(e);
    }
    Path absoluteSrc = makeAbsolute(workDir, src);
    Path absoluteDst = makeAbsolute(workDir, dst);
    if (!exists(channel, absoluteSrc)) {
        throw new IOException(String.format(E_SPATH_NOTEXIST, src));
    }
    if (exists(channel, absoluteDst)) {
        throw new IOException(String.format(E_DPATH_EXIST, dst));
    }
    boolean renamed = true;
    try {
        channel.cd("/");
        channel.rename(src.toUri().getPath(), dst.toUri().getPath());
    } catch (SftpException e) {
        renamed = false;
    }
    return renamed;
}

Example 62 with SftpException

use of com.jcraft.jsch.SftpException in project hadoop by apache.

the class SFTPFileSystem method create.

/**
   * A stream obtained via this call must be closed before using other APIs of
   * this class or else the invocation will block.
   */
@Override
public FSDataOutputStream create(Path f, FsPermission permission, boolean overwrite, int bufferSize, short replication, long blockSize, Progressable progress) throws IOException {
    final ChannelSftp client = connect();
    Path workDir;
    try {
        workDir = new Path(client.pwd());
    } catch (SftpException e) {
        throw new IOException(e);
    }
    Path absolute = makeAbsolute(workDir, f);
    if (exists(client, f)) {
        if (overwrite) {
            delete(client, f, false);
        } else {
            disconnect(client);
            throw new IOException(String.format(E_FILE_EXIST, f));
        }
    }
    Path parent = absolute.getParent();
    if (parent == null || !mkdirs(client, parent, FsPermission.getDefault())) {
        parent = (parent == null) ? new Path("/") : parent;
        disconnect(client);
        throw new IOException(String.format(E_CREATE_DIR, parent));
    }
    OutputStream os;
    try {
        client.cd(parent.toUri().getPath());
        os = client.put(f.getName());
    } catch (SftpException e) {
        throw new IOException(e);
    }
    FSDataOutputStream fos = new FSDataOutputStream(os, statistics) {

        @Override
        public void close() throws IOException {
            super.close();
            disconnect(client);
        }
    };
    return fos;
}

Example 63 with SftpException

use of com.jcraft.jsch.SftpException in project hadoop by apache.

the class SFTPFileSystem method mkdirs.

/**
   * Convenience method, so that we don't open a new connection when using this
   * method from within another method. Otherwise every API invocation incurs
   * the overhead of opening/closing a TCP connection.
   */
private boolean mkdirs(ChannelSftp client, Path file, FsPermission permission) throws IOException {
    boolean created = true;
    Path workDir;
    try {
        workDir = new Path(client.pwd());
    } catch (SftpException e) {
        throw new IOException(e);
    }
    Path absolute = makeAbsolute(workDir, file);
    String pathName = absolute.getName();
    if (!exists(client, absolute)) {
        Path parent = absolute.getParent();
        created = (parent == null || mkdirs(client, parent, FsPermission.getDefault()));
        if (created) {
            String parentDir = parent.toUri().getPath();
            boolean succeeded = true;
            try {
                client.cd(parentDir);
                client.mkdir(pathName);
            } catch (SftpException e) {
                throw new IOException(String.format(E_MAKE_DIR_FORPATH, pathName, parentDir));
            }
            created = created & succeeded;
        }
    } else if (isFile(client, absolute)) {
        throw new IOException(String.format(E_DIR_CREATE_FROMFILE, absolute));
    }
    return created;
}

Example 64 with SftpException

use of com.jcraft.jsch.SftpException in project hadoop by apache.

the class SFTPFileSystem method delete.

/**
   * Convenience method, so that we don't open a new connection when using this
   * method from within another method. Otherwise every API invocation incurs
   * the overhead of opening/closing a TCP connection.
   */
private boolean delete(ChannelSftp channel, Path file, boolean recursive) throws IOException {
    Path workDir;
    try {
        workDir = new Path(channel.pwd());
    } catch (SftpException e) {
        throw new IOException(e);
    }
    Path absolute = makeAbsolute(workDir, file);
    String pathName = absolute.toUri().getPath();
    FileStatus fileStat = null;
    try {
        fileStat = getFileStatus(channel, absolute);
    } catch (FileNotFoundException e) {
        // file not found, no need to delete, return true
        return false;
    }
    if (!fileStat.isDirectory()) {
        boolean status = true;
        try {
            channel.rm(pathName);
        } catch (SftpException e) {
            status = false;
        }
        return status;
    } else {
        boolean status = true;
        FileStatus[] dirEntries = listStatus(channel, absolute);
        if (dirEntries != null && dirEntries.length > 0) {
            if (!recursive) {
                throw new IOException(String.format(E_DIR_NOTEMPTY, file));
            }
            for (int i = 0; i < dirEntries.length; ++i) {
                delete(channel, new Path(absolute, dirEntries[i].getPath()), recursive);
            }
        }
        try {
            channel.rmdir(pathName);
        } catch (SftpException e) {
            status = false;
        }
        return status;
    }
}

Example 65 with SftpException

use of com.jcraft.jsch.SftpException in project GNS by MobilityFirst.

the class SFTPUpload method localFileNewer.

/**
   *
   * @param user
   * @param host
   * @param keyFile
   * @param fileToTransfer
   * @param sftpWorkingDirectory
   * @return true if the local file is newer
   */
public static boolean localFileNewer(String user, String host, File keyFile, String fileToTransfer, String sftpWorkingDirectory) {
    if (verbose) {
        System.out.println("Local File Newer Check " + fileToTransfer + " to " + host + "@" + user + " " + sftpWorkingDirectory);
    }
    try {
        ChannelSftp channelSftp = authenticateSftp(user, host, keyFile);
        Path paths = Paths.get(fileToTransfer);
        String localDir = paths.getParent().toString();
        channelSftp.cd(sftpWorkingDirectory);
        channelSftp.lcd(localDir);
        SftpATTRS remoteAttributes = channelSftp.stat(paths.getFileName().toString());
        long localTime = new File(fileToTransfer).lastModified();
        long remoteTime = remoteAttributes.getMTime() * 1000L;
        if (verbose) {
            System.out.println("L: " + localDir + " R: " + sftpWorkingDirectory + "\n" + "Local time = " + localTime + " Remote time = " + remoteTime);
        }
        if (verbose) {
            System.out.println("Result " + (localTime > remoteTime));
        }
        return localTime > remoteTime;
    } catch (JSchException | SftpException e) {
        System.out.println("Exception while checking for file newer:" + e);
        return false;
    }
}