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

List of usage examples for org.apache.commons.vfs2 FileObject exists

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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:functionaltests.dataspaces.TestGlobalSpace.java

@Test
public void testGlobalSpace() throws Throwable {

    File in = tmpFolder.newFolder("input_space");
    String inPath = in.getAbsolutePath();

    File out = tmpFolder.newFolder("output_space");
    String outPath = out.getAbsolutePath();

    writeFiles(inFiles, inPath);/*from w w  w . j av  a2  s.  c  om*/

    TaskFlowJob job = new TaskFlowJob();
    job.setName(this.getClass().getSimpleName());
    job.setInputSpace(in.toURI().toURL().toString());
    job.setOutputSpace(out.toURI().toURL().toString());

    JavaTask A = new JavaTask();
    A.setExecutableClassName("org.ow2.proactive.scheduler.examples.EmptyTask");
    A.setName("A");
    for (String[] file : inFiles) {
        A.addInputFiles(file[0], InputAccessMode.TransferFromInputSpace);
        A.addOutputFiles(file[0] + ".glob.A", OutputAccessMode.TransferToGlobalSpace);
    }
    A.setPreScript(new SimpleScript(scriptA, "groovy"));
    A.setForkEnvironment(new ForkEnvironment());
    job.addTask(A);

    JavaTask B = new JavaTask();
    B.setExecutableClassName("org.ow2.proactive.scheduler.examples.EmptyTask");
    B.setName("B");
    B.addDependence(A);
    for (String[] file : inFiles) {
        B.addInputFiles(file[0] + ".glob.A", InputAccessMode.TransferFromGlobalSpace);
        B.addOutputFiles(file[0] + ".out", OutputAccessMode.TransferToOutputSpace);
    }
    B.setPreScript(new SimpleScript(scriptB, "groovy"));
    B.setForkEnvironment(new ForkEnvironment());
    job.addTask(B);

    Scheduler scheduler = schedulerHelper.getSchedulerInterface();
    JobId id = scheduler.submit(job);

    schedulerHelper.waitForEventJobFinished(id);
    assertFalse(schedulerHelper.getJobResult(id).hadException());

    /**
     * check: inFiles > IN > LOCAL A > GLOBAL > LOCAL B > OUT 
     */
    for (String[] inFile : inFiles) {
        File f = new File(outPath + File.separator + inFile[0] + ".out");
        assertTrue("File does not exist: " + f.getAbsolutePath(), f.exists());
        Assert.assertEquals("Original and copied files differ", inFile[1], FileUtils.readFileToString(f));
        f.delete();
        File inf = new File(inPath + File.separator + inFile[0]);
        inf.delete();
    }

    /**
     * check that the file produced is accessible in the global user space via the scheduler API
     */
    String globalURI = scheduler.getGlobalSpaceURIs().get(0);
    assertTrue(globalURI.startsWith("file:"));
    String globalPath = new File(new URI(globalURI)).getAbsolutePath();

    FileSystemManager fsManager = VFSFactory.createDefaultFileSystemManager();
    for (String[] file : inFiles) {
        FileObject outFile = fsManager.resolveFile(globalURI + "/" + file[0] + ".glob.A");
        log("Checking existence of " + outFile.getURL());
        assertTrue(outFile.getURL() + " exists", outFile.exists());

        File outFile2 = new File(globalPath, file[0] + ".glob.A");
        log("Checking existence of " + outFile2);
        assertTrue(outFile2 + " exists", outFile2.exists());
    }
}

From source file:de.innovationgate.wgpublisher.design.fs.AbstractDesignFile.java

protected String readCode(DesignMetadata md) throws FileNotFoundException, IOException, WGDesignSyncException,
        InstantiationException, IllegalAccessException {

    // No, filecontainers have no code, but thanks for asking....
    if (getType() == WGDocument.TYPE_FILECONTAINER) {
        return null;
    }//from ww  w . ja  va 2  s  . c o m

    FileObject codeFile = getCodeFile();
    if (!codeFile.exists()) {
        throw new WGDesignSyncException("Code of file '" + getCodeFile().getName().getPath()
                + "' could not be read because the file does not exist.");
    }

    LineNumberReader reader = new LineNumberReader(createReader(codeFile));
    StringWriter writer = new StringWriter();
    int headerLines = 0;
    try {
        String line;
        boolean lookForHeaders = true;
        boolean firstLine = true;

        while ((line = reader.readLine()) != null) {
            if (lookForHeaders == true && line.startsWith("##")) {
                processDesignHeader(line, md.getInfo());
                headerLines++;
            } else {
                lookForHeaders = false;

                if (!firstLine) {
                    writer.write("\n");
                } else {
                    firstLine = false;
                }

                writer.write(line);
            }
        }
    } finally {
        reader.close();
        codeFile.getContent().close();
    }
    writer.close();
    md.setHeaderLines(headerLines);
    String code = writer.toString();
    return code;
}

From source file:com.seeburger.vfs2.util.VFSClassLoader.java

/**
 * Appends the specified FileObjects to the list of FileObjects to search
 * for classes and resources.//from   w w  w  .  j  a  v  a 2 s.  c  om
 *
 * @param manager The FileSystemManager.
 * @param files the FileObjects to append to the search path.
 * @throws FileSystemException if an error occurs.
 */
private void addFileObjects(final FileSystemManager manager, final FileObject[] files)
        throws FileSystemException {
    for (int i = 0; i < files.length; i++) {
        FileObject file = files[i];
        if (!file.exists()) {
            // Does not exist - skip
            continue;
        }

        // TODO - use federation instead
        if (file.getType().hasContent() && manager.canCreateFileSystem(file)) {
            // Use contents of the file
            file = manager.createFileSystem(file);
        }

        resources.add(file);
    }
}

From source file:com.sludev.commons.vfs2.provider.azure.AzFileProviderTest.java

/**
 * By default FileObject.getChildren() will use doListChildrenResolved() if available
 * /*ww  w .j  ava2 s. co m*/
 * @throws Exception 
 */
@Test
public void A005_listChildren() throws Exception {
    String currAccountStr = testProperties.getProperty("azure.account.name");
    String currKey = testProperties.getProperty("azure.account.key");
    String currContainerStr = testProperties.getProperty("azure.test0001.container.name");
    String currHost = testProperties.getProperty("azure.host"); // <account>.blob.core.windows.net

    DefaultFileSystemManager currMan = new DefaultFileSystemManager();
    currMan.addProvider(AzConstants.AZSBSCHEME, new AzFileProvider());
    currMan.init();

    StaticUserAuthenticator auth = new StaticUserAuthenticator("", currAccountStr, currKey);
    FileSystemOptions opts = new FileSystemOptions();
    DefaultFileSystemConfigBuilder.getInstance().setUserAuthenticator(opts, auth);

    String currFileNameStr = "uploadFile02";
    String currUriStr = String.format("%s://%s/%s/%s", AzConstants.AZSBSCHEME, currHost, currContainerStr,
            currFileNameStr);
    FileObject currFile = currMan.resolveFile(currUriStr, opts);

    FileObject[] currObjs = currFile.getChildren();
    for (FileObject obj : currObjs) {
        FileName currName = obj.getName();
        Boolean res = obj.exists();
        FileType ft = obj.getType();

        log.info(String.format("\nNAME.PATH : '%s'\nEXISTS : %b\nTYPE : %s\n\n", currName.getPath(), res, ft));
    }
}

From source file:de.innovationgate.wgpublisher.design.sync.FileContainerDeployment.java

public void performUpdate(WGDatabase db)
        throws IOException, WGException, InstantiationException, IllegalAccessException, WGDesignSyncException {

    FileObject codeFile = getCodeFile();
    // Check if file has been deleted in the meantime
    if (!codeFile.exists()) {
        return;/*from  w  w w .j a  v a2  s.  c om*/
    }

    WGFileContainer con = (WGFileContainer) db.getDocumentByDocumentKey(getDocumentKey());
    if (con == null) {
        WGDocumentKey docKey = new WGDocumentKey(getDocumentKey());
        con = db.createFileContainer(docKey.getName());
        con.save();
    }

    // Find new and updated files
    FileObject[] filesArray = codeFile.getChildren();
    if (filesArray == null) {
        throw new WGDesignSyncException("Cannot collect files from directory '"
                + codeFile.getName().getPathDecoded() + "'. Please verify directory existence.");
    }

    List<FileObject> files = new ArrayList<FileObject>(Arrays.asList(filesArray));
    Collections.sort(files, new FileNameComparator());

    FileObject file;
    Map existingFiles = new HashMap();
    for (int i = 0; i < files.size(); i++) {
        file = (FileObject) files.get(i);
        if (isExcludedFileContainerFile(file)) {
            continue;
        }

        ContainerFile containerFile = getContainerFile(file);
        if (containerFile != null) {
            if (existingFiles.containsKey(containerFile.getName())) {
                // Possible in case-sensitive file systems. Another file of the same name with another case is in the dir.
                continue;
            }

            if (file.getContent().getLastModifiedTime() != containerFile.getTimestamp()) {
                doRemoveFile(con, file.getName().getBaseName());
                doSaveDocument(con);
                doAttachFile(con, file);
                doSaveDocument(con);
                containerFile.setTimestamp(file.getContent().getLastModifiedTime());
            }
        } else {
            containerFile = new ContainerFile(file);
            if (con.hasFile(file.getName().getBaseName())) {
                doRemoveFile(con, file.getName().getBaseName());
                doSaveDocument(con);
            }
            doAttachFile(con, file);
            doSaveDocument(con);
        }
        existingFiles.put(containerFile.getName(), containerFile);
    }

    // Remove deleted files from container
    _files = existingFiles;
    List fileNamesInContainer = WGUtils.toLowerCase(con.getFileNames());
    fileNamesInContainer.removeAll(existingFiles.keySet());
    Iterator deletedFiles = fileNamesInContainer.iterator();
    while (deletedFiles.hasNext()) {
        con.removeFile((String) deletedFiles.next());
        con.save();
    }

    // Update metadata and save
    FCMetadata metaData = (FCMetadata) readMetaData();
    metaData.writeToDocument(con);
    con.save();
    FileObject metadataFile = getMetadataFile();
    if (metadataFile.exists()) {
        _timestampOfMetadataFile = metadataFile.getContent().getLastModifiedTime();
    }

    // We wont do this here, since this would rebuild all ContainerFiles, which is not neccessary
    // Instead we have updated just the metadata file timestamp
    // resetUpdateInformation();
}

From source file:hadoopInstaller.installation.UploadConfiguration.java

private void uploadConfiguration(FileObject remoteDirectory, Host host) throws InstallationError {
    try {/*  w  w  w .  j  a  va 2  s  .co  m*/
        FileObject configurationDirectory = remoteDirectory.resolveFile("hadoop/etc/hadoop/"); //$NON-NLS-1$
        if (deleteOldFiles) {
            configurationDirectory.delete(new AllFileSelector());
            log.debug("HostInstallation.Upload.DeletingOldFiles", //$NON-NLS-1$
                    host.getHostname());
        } else if (!configurationDirectory.exists()) {
            throw new InstallationError("HostInstallation.Upload.NotDeployed"); //$NON-NLS-1$
        }
        configurationDirectory.copyFrom(filesToUpload, new AllFileSelector());
        modifyEnvShFile(host, configurationDirectory, InstallerConstants.ENV_FILE_HADOOP);
        modifyEnvShFile(host, configurationDirectory, InstallerConstants.ENV_FILE_YARN);
        try {
            configurationDirectory.close();
        } catch (FileSystemException ex) {
            log.warn("HostInstallation.CouldNotClose", //$NON-NLS-1$
                    configurationDirectory.getName().getURI());
        }
    } catch (FileSystemException e) {
        throw new InstallationError(e, "HostInstallation.Upload.Error", //$NON-NLS-1$
                remoteDirectory.getName().getURI());
    }
}

From source file:de.innovationgate.wgpublisher.design.fs.FileSystemDesignSource.java

public List<String> getDesignNames() throws WGADesignRetrievalException {

    try {//  ww w.  j  ava  2s  .  com
        List<String> designs = new ArrayList<String>();

        // Add child design directories - All with a syncinfo/design.xml or those that are completely empty and can be initialized
        _dir.refresh();
        FileObject[] children = _dir.getChildren();
        for (int i = 0; i < children.length; i++) {
            FileObject child = children[i];
            if (child.getType().equals(FileType.FOLDER)) {
                FileObject resolvedChild = WGUtils.resolveDirLink(child);
                if (resolvedChild.getType().equals(FileType.FOLDER)) {
                    FileObject syncInfo = DesignDirectory.getDesignDefinitionFile(resolvedChild);
                    if (syncInfo != null || child.getChildren().length == 0) {
                        designs.add(child.getName().getBaseName());
                    }
                }
            } else if (child.getType().equals(FileType.FILE)
                    && child.getName().getExtension().equalsIgnoreCase(ARCHIVED_DESIGN_EXTENSION)) {
                designs.add(DESIGNNAMEPREFIX_ARCHIVE + child.getName().getBaseName().substring(0,
                        child.getName().getBaseName().lastIndexOf(".")));
            }
        }

        // Add additional directories
        Iterator<Map.Entry<String, String>> dirs = _additionalDirs.entrySet().iterator();
        while (dirs.hasNext()) {
            Map.Entry<String, String> entry = dirs.next();
            FileObject dir = VFS.getManager().resolveFile((String) entry.getValue());
            if (dir.exists() && dir.getType().equals(FileType.FOLDER)) {
                FileObject syncInfo = DesignDirectory.getDesignDefinitionFile(dir);
                if (syncInfo != null || dir.getChildren().length == 0) {
                    designs.add(DESIGNNAMEPREFIX_ADDITIONALDIR + entry.getKey());
                }
            }
        }

        return designs;
    } catch (FileSystemException e) {
        throw new WGADesignRetrievalException("Exception retrieving file system designs", e);
    }

}

From source file:de.innovationgate.wgpublisher.design.fs.FileSystemDesignProvider.java

protected static FileObject createConflictFile(FileObject targetFile) throws FileSystemException {
    String conflictFileName = targetFile.getName().getBaseName() + "_ovlconflict."
            + targetFile.getName().getExtension();
    targetFile = targetFile.getParent().resolveFile(conflictFileName);
    if (targetFile.exists()) {
        targetFile.delete();/* ww w. j a  v  a2  s. c  o  m*/
    }
    return targetFile;
}

From source file:de.innovationgate.wgpublisher.design.fs.AbstractDesignFile.java

protected DesignMetadata readMetaData() throws FileNotFoundException, IOException, InstantiationException,
        IllegalAccessException, WGDesignSyncException {

    FileObject metadataFile = getMetadataFile();

    // If not exists we return a default
    if (!metadataFile.exists()) {
        return createDefaultMetadata();
    }/*  ww  w .  j  a  v a2s .c  om*/

    // If the file exists, but is empty, we put default metadata information into it
    if (metadataFile.getContent().getSize() == 0) {
        createMetadataFile(metadataFile);
    }

    String metaXML;
    Reader reader = createReader(metadataFile);
    try {
        metaXML = WGUtils.readString(reader);
    } finally {
        reader.close();
        metadataFile.close();
    }

    DesignMetadata metaData;
    if (metaXML.trim().equals("")) {
        createMetadataFile(metadataFile);
        metaData = createDefaultMetadata();
    } else {
        DesignMetadataInfo info = (DesignMetadataInfo) DesignSyncManager.getXstream().fromXML(metaXML);
        if (info instanceof TMLMetadataInfo) {
            metaData = new TMLMetadata();
        } else if (info instanceof FCMetadataInfo) {
            metaData = new FCMetadata();
        } else if (info instanceof ScriptMetadataInfo) {
            metaData = new ScriptMetadata();
        } else {
            metaData = new DesignMetadata();
        }
        metaData.setInfo(info);
    }

    return metaData;
}

From source file:com.seeburger.vfs2.util.VFSClassLoader.java

/**
 * Searches through the search path of for the first class or resource
 * with specified name.//w  w  w .jav a  2  s. com
 * @param name The resource to load.
 * @return The Resource.
 * @throws FileSystemException if an error occurs.
 */
private Resource loadResource(final String name) throws FileSystemException {
    final Iterator<FileObject> it = resources.iterator();
    while (it.hasNext()) {
        final FileObject baseFile = it.next();
        final FileObject file = baseFile.resolveFile(name, NameScope.DESCENDENT_OR_SELF);
        if (file.exists()) {
            return new Resource(name, baseFile, file);
        }
    }

    return null;
}