Example usage for java.nio.file Files newDirectoryStream

Introduction

In this page you can find the example usage for java.nio.file Files newDirectoryStream.

Prototype

public static DirectoryStream<Path> newDirectoryStream(Path dir) throws IOException 

Source Link

Document

Opens a directory, returning a DirectoryStream to iterate over all entries in the directory.

Usage

From source file:com.mweagle.tereus.commands.evaluation.common.LambdaUtils.java

protected void createStableZip(ZipOutputStream zipOS, Path parentDirectory, Path archiveRoot, MessageDigest md)
        throws IOException {
    // Sort & zip files
    final List<Path> childDirectories = new ArrayList<>();
    final List<Path> childFiles = new ArrayList<>();
    DirectoryStream<Path> dirStream = Files.newDirectoryStream(parentDirectory);
    for (Path eachChild : dirStream) {
        if (Files.isDirectory(eachChild)) {
            childDirectories.add(eachChild);
        } else {/*from  w ww .j a va2  s .  c  o  m*/
            childFiles.add(eachChild);
        }
    }
    final int archiveRootLength = archiveRoot.toAbsolutePath().toString().length() + 1;
    childFiles.stream().sorted().forEach(eachPath -> {
        final String zeName = eachPath.toAbsolutePath().toString().substring(archiveRootLength);
        try {
            final ZipEntry ze = new ZipEntry(zeName);
            zipOS.putNextEntry(ze);
            Files.copy(eachPath, zipOS);
            md.update(Files.readAllBytes(eachPath));
            zipOS.closeEntry();
        } catch (IOException ex) {
            throw new RuntimeException(ex.getMessage());
        }
    });

    childDirectories.stream().sorted().forEach(eachPath -> {
        try {
            createStableZip(zipOS, eachPath, archiveRoot, md);
        } catch (IOException ex) {
            throw new RuntimeException(ex.getMessage());
        }
    });
}

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From source file:org.nuxeo.ecm.core.transientstore.AbstractTransientStore.java

@Override
public void doGC() {
    log.debug(String.format("Performing GC for TransientStore %s", config.getName()));
    long newSize = 0;
    try {/*w w  w .j  a  v  a 2 s .  com*/
        try (DirectoryStream<Path> stream = Files.newDirectoryStream(Paths.get(cacheDir.getAbsolutePath()))) {
            for (Path entry : stream) {
                String key = getKeyCachingDirName(entry.getFileName().toString());
                try {
                    if (exists(key)) {
                        newSize += getFilePathSize(entry);
                        continue;
                    }
                    FileUtils.deleteDirectory(entry.toFile());
                } catch (IOException e) {
                    log.error("Error while performing GC", e);
                }
            }
        }
    } catch (IOException e) {
        log.error("Error while performing GC", e);
    }
    setStorageSize(newSize);
}

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From source file:org.niord.core.batch.BatchSetService.java

/**
 * Called every minute to monitor the "batch-sets" folder. If a batch-set zip file has been
 * placed in this folder, the batch-set gets executed.
 *//*from w  w  w  . ja va  2 s  . co  m*/
@Schedule(persistent = false, second = "24", minute = "*/1", hour = "*/1")
protected void monitorBatchJobInFolderInitiation() {

    Path batchSetsFolder = batchService.getBatchJobRoot().resolve(BATCH_SETS_FOLDER);

    if (Files.isDirectory(batchSetsFolder)) {
        try (DirectoryStream<Path> stream = Files.newDirectoryStream(batchSetsFolder)) {
            for (Path p : stream) {
                if (Files.isReadable(p) && Files.isRegularFile(p)) {
                    try {
                        executeBatchSetFromArchiveOrFolder(p);
                    } catch (Exception e) {
                        log.error("Error executing batch set " + p, e);
                    } finally {
                        // Delete the file
                        try {
                            Files.delete(p);
                        } catch (IOException ignored) {
                        }
                    }
                }
            }
        } catch (IOException ignored) {
        }
    }
}

---

From source file:org.esa.s2tbx.dataio.s2.Sentinel2ProductReader.java

/**
 * From a product path, search a jpeg file for the given resolution, extract tile layout
 * information and update/*  ww w.  j  a v a  2 s  .  c om*/
 *
 * @param productMetadataFilePath the complete path to the product metadata file
 * @param resolution              the resolution for which we wan to find the tile layout
 * @return the tile layout for the resolution, or {@code null} if none was found
 */
public TileLayout retrieveTileLayoutFromProduct(Path productMetadataFilePath, S2SpatialResolution resolution) {
    TileLayout tileLayoutForResolution = null;

    if (Files.exists(productMetadataFilePath) && productMetadataFilePath.toString().endsWith(".xml")) {
        Path productFolder = productMetadataFilePath.getParent();
        Path granulesFolder = productFolder.resolve("GRANULE");
        try {
            DirectoryStream<Path> granulesFolderStream = Files.newDirectoryStream(granulesFolder);

            for (Path granulePath : granulesFolderStream) {
                tileLayoutForResolution = retrieveTileLayoutFromGranuleDirectory(granulePath, resolution);
                if (tileLayoutForResolution != null) {
                    break;
                }
            }
        } catch (IOException e) {
            SystemUtils.LOG.warning("Could not retrieve tile layout for product "
                    + productMetadataFilePath.toAbsolutePath().toString() + " error returned: "
                    + e.getMessage());
        }
    }

    return tileLayoutForResolution;
}

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From source file:org.corehunter.tests.data.simple.SimplePhenotypeDataTest.java

@Test
public void erroneousFiles() throws IOException {
    System.out.println(" |- Test erroneous files:");
    Path dir = Paths.get(SimplePhenotypeDataTest.class.getResource(ERRONEOUS_FILES_DIR).getPath());
    try (DirectoryStream<Path> directory = Files.newDirectoryStream(dir)) {
        for (Path file : directory) {
            System.out.print("  |- " + file.getFileName().toString() + ": ");
            FileType type = file.toString().endsWith(".txt") ? FileType.TXT : FileType.CSV;
            boolean thrown = false;
            try {
                SimplePhenotypeData.readPhenotypeData(file, type);
            } catch (IOException | IllegalArgumentException ex) {
                thrown = true;/*  w  w w.  j a v  a  2  s.c o m*/
                System.out.print(ex.getMessage());
            } finally {
                System.out.println();
            }
            assertTrue("File " + file + " should throw exception.", thrown);
        }
    }
}

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From source file:org.apache.storm.daemon.logviewer.utils.DirectoryCleaner.java

/**
 * Lists files in directory./*from  w  w  w  . j  a  v a2  s  .  c  om*/
 * Note that to avoid memory problem, we only return the first 1024 files in a directory.
 *
 * @param dir directory to get file list
 * @return files in directory
 */
public List<Path> getFilesForDir(Path dir) throws IOException {
    List<Path> files = new ArrayList<>();
    try (DirectoryStream<Path> stream = Files.newDirectoryStream(dir)) {
        for (Path path : stream) {
            files.add(path);
            if (files.size() >= MAX_NUMBER_OF_FILES_FOR_DIR) {
                break;
            }
        }
    } catch (IOException e) {
        numFileOpenExceptions.mark();
        throw e;
    }
    return files;
}

---

From source file:com.shmsoft.dmass.main.ActionStaging.java

private long dirSize(Path path) {
    long size = 0;
    try {//  w  w w  .  j a v a  2 s  .  co  m
        DirectoryStream ds = Files.newDirectoryStream(path);
        for (Object o : ds) {
            Path p = (Path) o;
            if (Files.isDirectory(p)) {
                size += dirSize(p);
            } else {
                size += Files.size(p);
            }
        }
    } catch (IOException e) {
        e.printStackTrace();
    }
    return size;
}

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From source file:org.apache.tika.batch.fs.FSBatchTestBase.java

/**
 * helper method equivalent to File#listFiles()
 * grabs children only, does not walk recursively
 * @param p//from w  ww  .  ja va 2 s. c o m
 * @return
 */
public static List<Path> listPaths(Path p) throws IOException {
    List<Path> list = new ArrayList<>();
    try (DirectoryStream<Path> ds = Files.newDirectoryStream(p)) {
        Iterator<Path> it = ds.iterator();
        while (it.hasNext()) {
            list.add(it.next());
        }
    }
    return list;
}

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From source file:org.apache.karaf.tooling.ArchiveMojo.java

private void addFileToZip(ZipArchiveOutputStream tOut, Path f, String base) throws IOException {
    if (Files.isDirectory(f)) {
        String entryName = base + f.getFileName().toString() + "/";
        ZipArchiveEntry zipEntry = new ZipArchiveEntry(entryName);
        tOut.putArchiveEntry(zipEntry);//w  w w .  ja  v  a2 s.co m
        tOut.closeArchiveEntry();
        try (DirectoryStream<Path> children = Files.newDirectoryStream(f)) {
            for (Path child : children) {
                addFileToZip(tOut, child, entryName);
            }
        }
    } else if (useSymLinks && Files.isSymbolicLink(f)) {
        String entryName = base + f.getFileName().toString();
        ZipArchiveEntry zipEntry = new ZipArchiveEntry(entryName);
        zipEntry.setUnixMode(UnixStat.LINK_FLAG | UnixStat.DEFAULT_FILE_PERM);
        tOut.putArchiveEntry(zipEntry);
        tOut.write(Files.readSymbolicLink(f).toString().getBytes());
        tOut.closeArchiveEntry();
    } else {
        String entryName = base + f.getFileName().toString();
        ZipArchiveEntry zipEntry = new ZipArchiveEntry(entryName);
        zipEntry.setSize(Files.size(f));
        if (entryName.contains("/bin/") || (!usePathPrefix && entryName.startsWith("bin"))) {
            if (!entryName.endsWith(".bat")) {
                zipEntry.setUnixMode(0755);
            } else {
                zipEntry.setUnixMode(0644);
            }
        }
        tOut.putArchiveEntry(zipEntry);
        Files.copy(f, tOut);
        tOut.closeArchiveEntry();
    }
}

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From source file:org.dcache.xrootd.standalone.DataServerHandler.java

@Override
protected DirListResponse doOnDirList(ChannelHandlerContext context, DirListRequest request)
        throws XrootdException {
    String listPath = request.getPath();
    if (listPath.isEmpty()) {
        throw new XrootdException(kXR_ArgMissing, "no source path specified");
    }//w w  w .j  ava2  s .  c o m

    Path dir = getFile(listPath).toPath();
    try (DirectoryStream<Path> paths = Files.newDirectoryStream(dir)) {
        DirListResponse.Builder builder = DirListResponse.builder(request);
        for (Path path : paths) {
            builder.add(path.getFileName().toString(),
                    request.isDirectoryStat() ? getFileStatusOf(path.toFile()) : null);
            if (builder.count() >= 1000) {
                respond(context, builder.buildPartial());
            }
        }
        return builder.buildFinal();
    } catch (FileNotFoundException e) {
        throw new XrootdException(kXR_NotFound, "No such directory: " + dir);
    } catch (NotDirectoryException e) {
        throw new XrootdException(kXR_IOError, "Not a directory: " + dir);
    } catch (IOException e) {
        throw new XrootdException(kXR_IOError, "IO Error: " + dir);
    }
}

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