Examples with FileVisitOption java.nio.file.FileVisitOption used on opensource projects

Example 1 with FileVisitOption

use of java.nio.file.FileVisitOption in project lucene-solr by apache.

the class CorePropertiesLocator method discover.

@Override
public List<CoreDescriptor> discover(final CoreContainer cc) {
    logger.debug("Looking for core definitions underneath {}", rootDirectory);
    final List<CoreDescriptor> cds = Lists.newArrayList();
    try {
        Set<FileVisitOption> options = new HashSet<>();
        options.add(FileVisitOption.FOLLOW_LINKS);
        final int maxDepth = 256;
        Files.walkFileTree(this.rootDirectory, options, maxDepth, new SimpleFileVisitor<Path>() {

            @Override
            public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
                if (file.getFileName().toString().equals(PROPERTIES_FILENAME)) {
                    CoreDescriptor cd = buildCoreDescriptor(file, cc);
                    if (cd != null) {
                        logger.debug("Found core {} in {}", cd.getName(), cd.getInstanceDir());
                        cds.add(cd);
                    }
                    return FileVisitResult.SKIP_SIBLINGS;
                }
                return FileVisitResult.CONTINUE;
            }

            @Override
            public FileVisitResult visitFileFailed(Path file, IOException exc) throws IOException {
                // otherwise, log a warning and continue to try and load other cores
                if (file.equals(rootDirectory)) {
                    logger.error("Error reading core root directory {}: {}", file, exc);
                    throw new SolrException(SolrException.ErrorCode.SERVER_ERROR, "Error reading core root directory");
                }
                logger.warn("Error visiting {}: {}", file, exc);
                return FileVisitResult.CONTINUE;
            }
        });
    } catch (IOException e) {
        throw new SolrException(SolrException.ErrorCode.SERVER_ERROR, "Couldn't walk file tree under " + this.rootDirectory, e);
    }
    logger.info("Found {} core definitions underneath {}", cds.size(), rootDirectory);
    if (cds.size() > 0) {
        logger.info("Cores are: {}", cds.stream().map(CoreDescriptor::getName).collect(Collectors.toList()));
    }
    return cds;
}

Example 2 with FileVisitOption

use of java.nio.file.FileVisitOption in project raml-module-builder by folio-org.

the class RamlDirCopier method copy.

/**
 * Copy a RAML directory tree to a target directory tree and
 * dereference all $ref references of all .json and .schema files.
 * It does not delete any existing files or directories at target,
 * but a file may get overwritten.
 *
 * @param sourceDir  directory tree to copy
 * @param targetDir  target directory
 * @throws IOException  on read or write error
 */
public static void copy(Path sourceDir, Path targetDir) throws IOException {
    File targetFile = targetDir.toFile();
    if (!targetFile.isDirectory()) {
        targetFile.mkdirs();
    }
    Set<FileVisitOption> options = Collections.emptySet();
    RamlDirCopier ramlDirCopier = new RamlDirCopier(sourceDir, targetDir);
    Files.walkFileTree(sourceDir, options, Integer.MAX_VALUE, ramlDirCopier.fileVisitor);
}

Example 3 with FileVisitOption

use of java.nio.file.FileVisitOption in project bw-calendar-engine by Bedework.

the class Restorer method restoreLocations.

protected void restoreLocations() throws CalFacadeException {
    try {
        final Path p = openDir(Defs.locationsDirName);
        if (p == null) {
            return;
        }
        final DirRestore<BwLocation> dirRestore = new DirRestore<>(p, restoreLoc);
        final EnumSet<FileVisitOption> opts = EnumSet.of(FileVisitOption.FOLLOW_LINKS);
        Files.walkFileTree(p, opts, Integer.MAX_VALUE, dirRestore);
    } catch (final IOException ie) {
        throw new CalFacadeException(ie);
    } finally {
        popPath();
    }
}

Example 4 with FileVisitOption

use of java.nio.file.FileVisitOption in project bw-calendar-engine by Bedework.

the class Restorer method restoreCollections.

protected void restoreCollections(final Path p) throws CalFacadeException {
    try {
        final DirRestore<BwCalendar> colRestore = new DirRestore<>(p, restoreCol);
        final EnumSet<FileVisitOption> opts = EnumSet.of(FileVisitOption.FOLLOW_LINKS);
        Files.walkFileTree(p, opts, Integer.MAX_VALUE, colRestore);
    } catch (final IOException ie) {
        throw new CalFacadeException(ie);
    } finally {
        popPath();
    }
}

Example 5 with FileVisitOption

use of java.nio.file.FileVisitOption in project embulk by embulk.

the class LocalFileInputPlugin method listFiles.

public List<String> listFiles(PluginTask task) {
    Path pathPrefix = Paths.get(task.getPathPrefix()).normalize();
    final Path directory;
    final String fileNamePrefix;
    if (Files.isDirectory(pathPrefix)) {
        directory = pathPrefix;
        fileNamePrefix = "";
    } else {
        fileNamePrefix = pathPrefix.getFileName().toString();
        Path d = pathPrefix.getParent();
        directory = (d == null ? CURRENT_DIR : d);
    }
    final ImmutableList.Builder<String> builder = ImmutableList.builder();
    final String lastPath = task.getLastPath().orNull();
    try {
        log.info("Listing local files at directory '{}' filtering filename by prefix '{}'", directory.equals(CURRENT_DIR) ? "." : directory.toString(), fileNamePrefix);
        int maxDepth = Integer.MAX_VALUE;
        Set<FileVisitOption> opts;
        if (task.getFollowSymlinks()) {
            opts = EnumSet.of(FileVisitOption.FOLLOW_LINKS);
        } else {
            opts = EnumSet.noneOf(FileVisitOption.class);
            log.info("\"follow_symlinks\" is set false. Note that symbolic links to directories are skipped.");
        }
        Files.walkFileTree(directory, opts, maxDepth, new SimpleFileVisitor<Path>() {

            @Override
            public FileVisitResult preVisitDirectory(Path path, BasicFileAttributes attrs) {
                if (path.equals(directory)) {
                    return FileVisitResult.CONTINUE;
                } else if (lastPath != null && path.toString().compareTo(lastPath) <= 0) {
                    return FileVisitResult.SKIP_SUBTREE;
                } else {
                    Path parent = path.getParent();
                    if (parent == null) {
                        parent = CURRENT_DIR;
                    }
                    if (parent.equals(directory)) {
                        if (path.getFileName().toString().startsWith(fileNamePrefix)) {
                            return FileVisitResult.CONTINUE;
                        } else {
                            return FileVisitResult.SKIP_SUBTREE;
                        }
                    } else {
                        return FileVisitResult.CONTINUE;
                    }
                }
            }

            @Override
            public FileVisitResult visitFile(Path path, BasicFileAttributes attrs) {
                try {
                    // Symbolic links to directories are explicitly skipped here by checking with |Path#toReadlPath|.
                    if (Files.isDirectory(path.toRealPath())) {
                        return FileVisitResult.CONTINUE;
                    }
                } catch (IOException ex) {
                    throw new RuntimeException("Can't resolve symbolic link", ex);
                }
                if (lastPath != null && path.toString().compareTo(lastPath) <= 0) {
                    return FileVisitResult.CONTINUE;
                } else {
                    Path parent = path.getParent();
                    if (parent == null) {
                        parent = CURRENT_DIR;
                    }
                    if (parent.equals(directory)) {
                        if (path.getFileName().toString().startsWith(fileNamePrefix)) {
                            builder.add(path.toString());
                            return FileVisitResult.CONTINUE;
                        }
                    } else {
                        builder.add(path.toString());
                    }
                    return FileVisitResult.CONTINUE;
                }
            }
        });
    } catch (IOException ex) {
        throw new RuntimeException(String.format("Failed get a list of local files at '%s'", directory), ex);
    }
    return builder.build();
}