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:org.apache.zeppelin.notebook.repo.OldVFSNotebookRepo.java

@Override
public void remove(String noteId, AuthenticationInfo subject) throws IOException {
    FileObject rootDir = fsManager.resolveFile(getPath("/"));
    FileObject noteDir = rootDir.resolveFile(noteId, NameScope.CHILD);

    if (!noteDir.exists()) {
        // nothing to do
        return;/*from   w ww  . ja va 2 s . co  m*/
    }

    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);
}

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From source file:org.apache.zeppelin.notebook.repo.VFSNotebookRepo.java

private Note getNote(FileObject noteDir) throws IOException {
    if (!isDirectory(noteDir)) {
        throw new IOException(noteDir.getName().toString() + " is not a directory");
    }//from w  w w. ja va2  s. c o  m

    FileObject noteJson = noteDir.resolveFile("note.json", NameScope.CHILD);
    if (!noteJson.exists()) {
        throw new IOException(noteJson.getName().toString() + " not found");
    }

    GsonBuilder gsonBuilder = new GsonBuilder();
    gsonBuilder.setPrettyPrinting();
    Gson gson = gsonBuilder.create();

    FileContent content = noteJson.getContent();
    InputStream ins = content.getInputStream();
    String json = IOUtils.toString(ins, conf.getString(ConfVars.ZEPPELIN_ENCODING));
    ins.close();

    Note note = gson.fromJson(json, Note.class);
    //    note.setReplLoader(replLoader);
    //    note.jobListenerFactory = jobListenerFactory;

    for (Paragraph p : note.getParagraphs()) {
        if (p.getStatus() == Status.PENDING || p.getStatus() == Status.RUNNING) {
            p.setStatus(Status.ABORT);
        }
    }

    return note;
}

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From source file:org.apache.zeppelin.notebook.repo.VFSNotebookRepo.java

private FileObject getRootDir() throws IOException {
    FileObject rootDir = fsManager.resolveFile(getPath("/"));

    if (!rootDir.exists()) {
        throw new IOException("Root path does not exists");
    }/* w  w  w.j av  a  2s.  co  m*/

    if (!isDirectory(rootDir)) {
        throw new IOException("Root path is not a directory");
    }

    return rootDir;
}

---

From source file:org.apache.zeppelin.notebook.repo.VFSNotebookRepo.java

@Override
public void save(Note note) throws IOException {
    GsonBuilder gsonBuilder = new GsonBuilder();
    gsonBuilder.setPrettyPrinting();/* ww  w. j a va  2  s.co m*/
    Gson gson = gsonBuilder.create();
    String json = gson.toJson(note);

    FileObject rootDir = getRootDir();

    FileObject noteDir = rootDir.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();
}

---

From source file:org.apache.zeppelin.notebook.repo.VFSNotebookRepo.java

@Override
public void remove(String noteId) throws IOException {
    FileObject rootDir = fsManager.resolveFile(getPath("/"));
    FileObject noteDir = rootDir.resolveFile(noteId, NameScope.CHILD);

    if (!noteDir.exists()) {
        // nothing to do
        return;//from  w  ww  . ja v  a 2s . c o  m
    }

    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:org.celeria.minecraft.backup.TemporaryFolderProvider.java

private FileObject getChildFolder(final FileSystemManager fileSystem, final FileObject baseFolder,
        final String baseName) throws FileSystemException {
    for (int counter = 0; counter < TEMPORARY_FOLDER_ATTEMPTS; ++counter) {
        final FileObject temporaryFolder = fileSystem.resolveFile(baseFolder, baseName + counter);
        if (!temporaryFolder.exists()) {
            temporaryFolder.createFolder();
            return temporaryFolder;
        }//from  w  w  w  .  java 2 s .  com
    }
    throw new FileSystemException("Failed to create directory within " + TEMPORARY_FOLDER_ATTEMPTS
            + " attempts (tried " + baseName + "0 to " + baseName + (TEMPORARY_FOLDER_ATTEMPTS - 1) + ')');
}

---

From source file:org.clever.ClusterManager.StorageManagerPlugins.StorageManagerClever.StorageManager.java

/**
* This method checks if the path set by the user during registration is valid
* @param cleverPath//from  w ww .  j a v  a  2 s .  co  m
* @throws CleverException
* @throws FileSystemException
* @throws Exception 
*/
@Override
public void registerVeNew(String cleverPath) throws CleverException, FileSystemException, Exception {

    VFSDescription vfsD = discoveryNode(cleverPath, "");
    VirtualFileSystem a = new VirtualFileSystem();
    a.setURI(vfsD);
    FileObject file = a.resolver(vfsD, a.getURI(), vfsD.getPath1());
    if (!file.exists()) {
        throw new LogicalCatalogException("file not exist");
    }

}

---

From source file:org.clever.Common.Storage.VirtualFileSystem.java

/**
 * This method lists contents of a file or folder
 * @param file//from w  w  w  .  j  a  v  a2s . c o  m
 * @return
 * @throws FileSystemException 
 */
public String ls(FileObject file) throws FileSystemException {
    String str = "Contents of " + file.getName() + "\n";
    if (file.exists()) {
        if (file.getType().equals(FileType.FILE)) {
            str = str + "Size: " + file.getContent().getSize() + " bytes\n" + "Last modified: "
                    + DateFormat.getInstance().format(new Date(file.getContent().getLastModifiedTime())) + "\n"
                    + "Readable: " + file.isReadable() + "\n" + "Writeable: " + file.isWriteable() + "\n";
            return str;
        } else if (file.getType().equals(FileType.FOLDER) && file.isReadable()) {
            FileObject[] children = file.getChildren();
            str = str = "Directory with " + children.length + " files \n" + "Readable: " + file.isReadable()
                    + "\n" + "Writeable: " + file.isWriteable() + "\n\n";
            //str=str+"Last modified: " +DateFormat.getInstance().format(new Date(file.getContent().getLastModifiedTime()))+"\n" ;
            for (int i = 0; i < children.length; i++) {
                str = str + children[i].getName().getBaseName() + "\n";
            }
        }
    } else {
        str = str + "The file does not exist";
    }
    return str;
}

---

From source file:org.clever.Common.Storage.VirtualFileSystem.java

/**
 * This method copies a file or folder//from   w w w .j  a  va  2  s.  co m
 * @param file_s
 * @param file_d
 * @throws FileSystemException 
 */
public void cp(FileObject file_s, FileObject file_d) throws FileSystemException {
    if (file_d.exists() && file_d.getType() == FileType.FOLDER) {
        file_d = file_d.resolveFile(file_s.getName().getBaseName());
    }
    file_d.copyFrom(file_s, Selectors.SELECT_ALL);
}

---

From source file:org.cloudifysource.esc.installer.filetransfer.VfsFileTransfer.java

@Override
public void copyFiles(final InstallationDetails details, final Set<String> excludedFiles,
        final List<File> additionalFiles, final long endTimeMillis)
        throws TimeoutException, InstallerException {

    logger.fine("Copying files to: " + host + " from local dir: " + localDir.getName().getPath() + " excluding "
            + excludedFiles.toString());

    try {/*from  w  w  w .j a  va  2  s .  c o  m*/

        if (remoteDir.exists()) {
            FileType type = remoteDir.getType();
            if (!type.equals(FileType.FOLDER)) {
                throw new InstallerException("The remote location: " + remoteDir.getName().getFriendlyURI()
                        + " exists but is not a directory");
            }

            if (deleteRemoteDirectoryContents) {
                logger.info("Deleting contents of remote directory: " + remoteDir.getName().getFriendlyURI());
                remoteDir.delete(new FileDepthSelector(1, Integer.MAX_VALUE));
            }
            FileObject[] children = remoteDir.getChildren();
            if (children.length > 0) {

                throw new InstallerException(
                        "The remote directory: " + remoteDir.getName().getFriendlyURI() + " is not empty");
            }
        }

        remoteDir.copyFrom(localDir, new FileSelector() {

            @Override
            public boolean includeFile(final FileSelectInfo fileInfo) throws Exception {
                if (excludedFiles.contains(fileInfo.getFile().getName().getBaseName())) {
                    logger.fine(fileInfo.getFile().getName().getBaseName() + " excluded");
                    return false;

                }
                final FileObject remoteFile = fileSystemManager.resolveFile(remoteDir,
                        localDir.getName().getRelativeName(fileInfo.getFile().getName()));

                if (!remoteFile.exists()) {
                    logger.fine(fileInfo.getFile().getName().getBaseName() + " missing on server");
                    return true;
                }

                if (fileInfo.getFile().getType() == FileType.FILE) {
                    final long remoteSize = remoteFile.getContent().getSize();
                    final long localSize = fileInfo.getFile().getContent().getSize();
                    final boolean res = localSize != remoteSize;
                    if (res) {
                        logger.fine(fileInfo.getFile().getName().getBaseName() + " different on server");
                    }
                    return res;
                }
                return false;

            }

            @Override
            public boolean traverseDescendents(final FileSelectInfo fileInfo) throws Exception {
                return true;
            }
        });

        for (final File file : additionalFiles) {
            logger.fine("copying file: " + file.getAbsolutePath() + " to remote directory");
            final FileObject fileObject = fileSystemManager.resolveFile("file:" + file.getAbsolutePath());
            final FileObject remoteFile = remoteDir.resolveFile(file.getName());
            remoteFile.copyFrom(fileObject, new AllFileSelector());
        }

        logger.fine("Copying files to: " + host + " completed.");
    } catch (final FileSystemException e) {
        throw new InstallerException("Failed to copy files to remote host " + host + ": " + e.getMessage(), e);

    }
    checkTimeout(endTimeMillis);

}

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