Example usage for org.apache.commons.vfs2 FileObject exists

Introduction

In this page you can find the example usage for org.apache.commons.vfs2 FileObject exists.

Prototype

boolean exists() throws FileSystemException;

Source Link

Document

Determines if this file exists.

Usage

From source file:se.kth.hopsworks.zeppelin.notebook.repo.FSNotebookRepo.java

@Override
public Note get(String noteId) throws IOException {
    FileObject rootDir = fsManager.resolveFile(getPath("/"));
    FileObject projectDir = rootDir.resolveFile(this.project.getName(), NameScope.CHILD);
    FileObject noteDir = projectDir.resolveFile(noteId, NameScope.CHILD);

    if (noteDir.exists() && isDirectory(noteDir)) {
        return getNote(noteDir);
    }//w  w  w. ja v a  2s  .c o m

    noteDir = rootDir.resolveFile(noteId, NameScope.CHILD);
    return getNote(noteDir);
}

From source file:se.kth.hopsworks.zeppelin.notebook.repo.FSNotebookRepo.java

@Override
public void save(Note note) throws IOException {
    GsonBuilder gsonBuilder = new GsonBuilder();
    gsonBuilder.setPrettyPrinting();/*  w  ww . ja  va2 s  . c  om*/
    Gson gson = gsonBuilder.create();
    String json = gson.toJson(note);

    FileObject rootDir = getRootDir();

    FileObject projectDir = rootDir.resolveFile(this.project.getName(), NameScope.CHILD);
    if (!projectDir.exists()) {
        projectDir.createFolder();
    }
    if (!isDirectory(projectDir)) {
        throw new IOException(projectDir.getName().toString() + " is not a directory");
    }

    FileObject noteDir = projectDir.resolveFile(note.id(), NameScope.CHILD);

    if (!noteDir.exists()) {
        noteDir.createFolder();
    }
    if (!isDirectory(noteDir)) {
        throw new IOException(noteDir.getName().toString() + " is not a directory");
    }

    FileObject noteJson = noteDir.resolveFile("note.json", NameScope.CHILD);
    // false means not appending. creates file if not exists
    OutputStream out = noteJson.getContent().getOutputStream(false);
    out.write(json.getBytes(conf.getString(ConfVars.ZEPPELIN_ENCODING)));
    out.close();
    noteJson.moveTo(noteDir.resolveFile("note.json", NameScope.CHILD));
}

From source file:se.kth.hopsworks.zeppelin.notebook.repo.FSNotebookRepo.java

@Override
public void remove(String noteId) throws IOException {
    FileObject rootDir = fsManager.resolveFile(getPath("/"));
    FileObject projectDir = rootDir.resolveFile(this.project.getName(), NameScope.CHILD);
    if (!projectDir.exists() || !isDirectory(projectDir)) {
        // no project dir
        return;//from   w  w w. j av a2s . co  m
    }
    FileObject noteDir = projectDir.resolveFile(noteId, NameScope.CHILD);

    if (!noteDir.exists()) {
        // nothing to do
        return;
    }

    if (!isDirectory(noteDir)) {
        // it is not look like zeppelin note savings
        throw new IOException("Can not remove " + noteDir.getName().toString());
    }

    noteDir.delete(Selectors.SELECT_SELF_AND_CHILDREN);
}

From source file:se.kth.hopsworks.zeppelin.notebook.repo.FSNotebookRepo.java

private LinkedList<FileObject> getNotes(FileObject root, FileObject proj) throws IOException {
    FileObject[] rootchildren = root.getChildren();
    FileObject[] projChildren;//from  ww  w.  java  2 s  .c o m
    LinkedList<FileObject> children = new LinkedList<>();
    if (isDirectory(proj)) {
        projChildren = proj.getChildren();
        if (projChildren != null) {
            children = new LinkedList<>(Arrays.asList(projChildren));
        }
    }
    // add notes in the root dir that are not project specific ex. tutorials
    for (FileObject f : rootchildren) {
        if (isDirectory(f)) {
            FileObject noteJson = f.resolveFile("note.json", NameScope.CHILD);
            if (noteJson.exists() && !listContainsNote(children, f)) {
                children.add(f);
            }
        }
    }

    return children;
}

From source file:sf.net.experimaestro.connectors.SingleHostConnector.java

public FileObject getTemporaryFile(String prefix, String suffix) throws FileSystemException {
    FileObject tmpdir = getTemporaryDirectory();

    final int MAX_ATTEMPTS = 1000;

    for (int attempt = 0; attempt < MAX_ATTEMPTS; attempt++) {
        FileObject child = tmpdir.resolveFile(prefix + RandomStringUtils.random(10, chars) + suffix);
        if (!child.exists()) {
            try {
                child.createFile();/*w  w  w  .  ja  v  a  2 s.  c  o m*/
            } catch (Throwable t) {
            }
            return child;
        }
    }
    throw new FileSystemException(
            format("Could not find a proper temporary file name after %d attempts", MAX_ATTEMPTS));
}

From source file:sf.net.experimaestro.connectors.XPMProcess.java

/**
 * Returns the error code//from ww  w .  ja va  2  s  . c o m
 */
public int exitValue() {
    // Check for done file
    try {
        if (job.getLocator().resolve(connector, Resource.DONE_EXTENSION).exists())
            return 0;

        // If the job is not done, check the ".code" file to get the error code
        // and otherwise return -1
        final FileObject codeFile = job.getMainConnector()
                .resolveFile(job.getLocator().getPath() + Job.CODE_EXTENSION);
        if (codeFile.exists()) {
            final InputStream stream = codeFile.getContent().getInputStream();
            final BufferedReader reader = new BufferedReader(new InputStreamReader(stream));
            String s = reader.readLine();
            int code = s != null ? Integer.parseInt(s) : -1;
            reader.close();
            return code;
        }
    } catch (IOException e) {
        throw new IllegalThreadStateException();
    }

    // The process failed, but we do not know how
    return -1;

}

From source file:sf.net.experimaestro.connectors.XPMProcess.java

/**
 * Asynchronous check the state of the job monitor
 *//* w  w  w. ja v  a2 s .  c o  m*/
public void check() throws Exception {
    if (!isRunning()) {
        // We are not running: send a message
        LOGGER.debug("End of job [%s]", job);
        final FileObject file = job.getLocator().resolve(connector, Resource.CODE_EXTENSION);
        final long time = file.exists() ? file.getContent().getLastModifiedTime() : -1;
        job.notify(new EndOfJobMessage(exitValue(), time));
        dispose();
    }
}

From source file:sf.net.experimaestro.scheduler.ExclusiveDependency.java

@Override
synchronized protected DependencyStatus _accept(Scheduler scheduler, Resource from) {
    Resource resource = getFrom(scheduler, from);
    resource.init(scheduler);/*w  w w.j  a  v a2  s.co m*/
    final FileObject file;
    try {
        file = resource.getFileWithExtension(Resource.LOCK_EXTENSION);
        return file.exists() ? DependencyStatus.WAIT : DependencyStatus.OK_LOCK;
    } catch (FileSystemException e) {
        LOGGER.error(e, "Error while checking the presence of lock file for [%s]", from);
        return DependencyStatus.ERROR;

    }

}

From source file:sftpexamples.SftpUtility.java

public static boolean move(String hostName, String username, String password, String remoteSrcFilePath,
        String remoteDestFilePath) {
    StandardFileSystemManager manager = new StandardFileSystemManager();

    try {//from ww w .  j a  va 2s.c o m
        manager.init();

        // Create remote object
        FileObject remoteFile = manager.resolveFile(
                createConnectionString(hostName, username, password, remoteSrcFilePath),
                createDefaultOptions());
        FileObject remoteDestFile = manager.resolveFile(
                createConnectionString(hostName, username, password, remoteDestFilePath),
                createDefaultOptions());

        if (remoteFile.exists()) {
            remoteFile.moveTo(remoteDestFile);
            ;
            System.out.println("Move remote file success");
            return true;
        } else {
            System.out.println("Source file doesn't exist");
            return false;
        }
    } catch (Exception e) {
        throw new RuntimeException(e);
    } finally {
        manager.close();
    }
}

From source file:sftpexamples.SftpUtility.java

/**
 * Method to delete the specified file from the remote system
 *
 * @param hostName HostName of the server
 * @param username UserName to login//from   w w w .  jav  a  2  s  . c  om
 * @param password Password to login
 * @param localFilePath LocalFilePath. Should contain the entire local file
 * path - Directory and Filename with \\ as separator
 * @param remoteFilePath remoteFilePath. Should contain the entire remote
 * file path - Directory and Filename with / as separator
 */
public static void delete(String hostName, String username, String password, String remoteFilePath) {
    StandardFileSystemManager manager = new StandardFileSystemManager();

    try {
        manager.init();

        // Create remote object
        FileObject remoteFile = manager.resolveFile(
                createConnectionString(hostName, username, password, remoteFilePath), createDefaultOptions());

        if (remoteFile.exists()) {
            remoteFile.delete();
            System.out.println("Delete remote file success");
        }
    } catch (Exception e) {
        throw new RuntimeException(e);
    } finally {
        manager.close();
    }
}