Example usage for java.nio.file StandardOpenOption READ

List of usage examples for java.nio.file StandardOpenOption READ

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Introduction

In this page you can find the example usage for java.nio.file StandardOpenOption READ.

Prototype

StandardOpenOption READ

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Usage

From source file:ubicrypt.core.Utils.java

public static Observable<byte[]> read(final Path path) {
    return Observable.create(subscriber -> {
        final AtomicLong pos = new AtomicLong(0);
        try {/*from  w w  w  .  ja v  a  2 s . com*/
            final AsynchronousFileChannel channel = AsynchronousFileChannel.open(path, StandardOpenOption.READ);
            read(pos, ByteBuffer.allocate(1 << 16), channel, subscriber);
        } catch (final Throwable e) {
            subscriber.onError(e);
        }
    });
}

From source file:codes.thischwa.c5c.impl.LocalConnector.java

@Override
public StreamContent download(String backendPath) throws C5CException {
    Path file = buildRealPath(backendPath);
    try {//from   w  w  w . j  a v  a 2 s. c o  m
        InputStream in = new BufferedInputStream(Files.newInputStream(file, StandardOpenOption.READ));
        return buildStreamContent(in, Files.size(file));
    } catch (FileNotFoundException e) {
        logger.error("Requested file not exits: {}", file.toAbsolutePath());
        throw new FilemanagerException(FilemanagerAction.DOWNLOAD, FilemanagerException.Key.FileNotExists,
                backendPath);
    } catch (IOException | SecurityException e) {
        String msg = String.format("Error while downloading {}: {}", file.getFileName().toFile(),
                e.getMessage());
        logger.error(msg, e);
        throw new C5CException(FilemanagerAction.DOWNLOAD, msg);
    }
}

From source file:nextflow.fs.dx.DxFileSystemProvider.java

public InputStream newInputStream(Path file, OpenOption... options) throws IOException {
    if (options.length > 0) {
        for (OpenOption opt : options) {
            if (opt != StandardOpenOption.READ)
                throw new UnsupportedOperationException("'" + opt + "' not allowed");
        }//from   w ww . j a  v a  2  s.  c o  m
    }

    final DxPath path = toDxPath(file);
    final String fileId = path.getFileId();
    final Map<String, Object> download = api.fileDownload(fileId);
    final String url = (String) download.get("url");
    final Map<String, String> headers = (Map<String, String>) download.get("headers");

    final HttpClient client = DxHttpClient.getInstance().http();
    client.getParams().setParameter(CoreProtocolPNames.PROTOCOL_VERSION, HttpVersion.HTTP_1_1);

    HttpGet get = new HttpGet(url);
    get.getParams().setParameter(ClientPNames.COOKIE_POLICY, CookiePolicy.IGNORE_COOKIES);
    for (Map.Entry<String, String> item : headers.entrySet()) {
        get.setHeader(item.getKey(), item.getValue());
    }

    return client.execute(get).getEntity().getContent();
}

From source file:schemacrawler.test.utility.TestUtility.java

private static Reader readerForFile(final Path testOutputTempFile, final boolean isCompressed)
        throws IOException {

    final BufferedReader bufferedReader;
    if (isCompressed) {
        final ZipInputStream inputStream = new ZipInputStream(
                newInputStream(testOutputTempFile, StandardOpenOption.READ));
        inputStream.getNextEntry();// w  w  w . j a  v  a 2 s .c  o  m

        bufferedReader = new BufferedReader(new InputStreamReader(inputStream, StandardCharsets.UTF_8));
    } else {
        bufferedReader = newBufferedReader(testOutputTempFile, StandardCharsets.UTF_8);
    }
    return bufferedReader;
}

From source file:com.lukakama.serviio.watchservice.watcher.WatcherRunnable.java

private boolean isPathFullyAccessible(Path path) {
    if (!Files.exists(path)) {
        return false;
    }/* www  .ja  va 2s.c  om*/

    if (Files.isDirectory(path)) {
        DirectoryStream<Path> directoryStream = null;
        try {
            directoryStream = Files.newDirectoryStream(path);

            return true;
        } catch (IOException e) {
            log.debug("Unaccessible directory: {}", path, e);
            return false;
        } finally {
            IOUtils.closeQuietly(directoryStream);
        }

    } else {
        FileChannel fileChannel = null;
        try {
            fileChannel = FileChannel.open(path, StandardOpenOption.READ);
            fileChannel.position(Files.size(path));

            return true;
        } catch (IOException e) {
            log.debug("Unaccessible file: {}", path, e);
            return false;
        } finally {
            IOUtils.closeQuietly(fileChannel);
        }
    }
}

From source file:org.darkware.wpman.security.ChecksumDatabase.java

/**
 * Calculate a checksum on the given file.
 *
 * @param file The file to calculate a checksum for.
 * @return The checksum as a {@code String}.
 * @see #doChecksum(ReadableByteChannel)
 */// w  w w .  ja v a 2  s.c o  m
protected String calculateChecksum(final Path file) {
    try (FileChannel channel = FileChannel.open(file, StandardOpenOption.READ)) {
        return this.doChecksum(channel);
    } catch (IOException e) {
        ChecksumDatabase.log.error("Failed to calculate checksum on {}: {}", file, e.getLocalizedMessage());
        return "";
    }
}

From source file:com.arpnetworking.tsdcore.tailer.StatefulTailer.java

private Optional<Boolean> compareByHash(final Optional<String> prefixHash, final int prefixLength) {
    final int appliedLength;
    if (_hash.isPresent()) {
        appliedLength = REQUIRED_BYTES_FOR_HASH;
    } else {//from  w w w .java  2  s.  c  o m
        appliedLength = prefixLength;
    }
    try (final SeekableByteChannel reader = Files.newByteChannel(_file.toPath(), StandardOpenOption.READ)) {
        final Optional<String> filePrefixHash = computeHash(reader, appliedLength);

        LOGGER.trace(String.format("Comparing hashes; hash1=%s, hash2=%s, size=%d", prefixHash, filePrefixHash,
                Integer.valueOf(appliedLength)));

        return Optional
                .of(Boolean.valueOf(Objects.equals(_hash.or(prefixHash).orNull(), filePrefixHash.orNull())));
    } catch (final IOException e) {
        return Optional.absent();
    }
}

From source file:org.craftercms.studio.impl.v1.repository.disk.DiskContentRepository.java

protected InputStream getVersionedContent(String path, String label) throws ContentNotFoundException {
    InputStream retStream = null;

    try {//w  w w .j av  a  2  s  .c o  m
        OpenOption options[] = { StandardOpenOption.READ };
        retStream = Files.newInputStream(constructVersionRepoPath(path + "--" + label));
    }

    catch (Exception err) {
        throw new ContentNotFoundException("error while opening file", err);
    }

    return retStream;
}

From source file:codes.thischwa.c5c.impl.LocalConnector.java

@Override
public String editFile(String backendPath) throws C5CException {
    Path file = buildRealPath(backendPath);
    InputStream in = null;//from  w w  w. ja  v  a2  s  .c  o m
    try {
        in = Files.newInputStream(file, StandardOpenOption.READ);
        return IOUtils.toString(in, PropertiesLoader.getDefaultEncoding());
    } catch (IOException e) {
        throw new C5CException(FilemanagerAction.EDITFILE, e.getMessage());
    } finally {
        IOUtils.closeQuietly(in);
    }
}

From source file:com.clustercontrol.agent.log.LogfileMonitor.java

/**
 * ?//  w ww.  j ava  2  s.  co m
 */
private boolean openFile() {
    m_log.info("openFile : filename=" + status.rsFilePath.getName());

    closeFile();

    FileChannel fc = null;

    // 
    try {
        if (checkPrefix())
            status.rotate();

        fc = FileChannel.open(Paths.get(getFilePath()), StandardOpenOption.READ);

        long filesize = fc.size();
        if (filesize > LogfileMonitorConfig.fileMaxSize) {
            // ????????
            // message.log.agent.1={0}?
            // message.log.agent.3=??????
            // message.log.agent.5={0} byte?
            String[] args1 = { getFilePath() };
            String[] args2 = { String.valueOf(filesize) };
            sendMessage(PriorityConstant.TYPE_INFO, MessageConstant.AGENT.getMessage(),
                    MessageConstant.MESSAGE_LOG_FILE_SIZE_EXCEEDED_UPPER_BOUND.getMessage(),
                    MessageConstant.MESSAGE_LOG_FILE.getMessage(args1) + ", "
                            + MessageConstant.MESSAGE_LOG_FILE_SIZE_BYTE.getMessage(args2));
        }

        // ??
        // ?open?init=true??
        // ??open?init=false???
        fc.position(status.position);

        fileChannel = fc;

        return true;
    } catch (FileNotFoundException e) {
        m_log.info("openFile : " + e.getMessage());
        if (m_initFlag) {
            // ????????
            // message.log.agent.1={0}?
            // message.log.agent.2=???????
            String[] args = { getFilePath() };
            sendMessage(PriorityConstant.TYPE_INFO, MessageConstant.AGENT.getMessage(),
                    MessageConstant.MESSAGE_LOG_FILE_NOT_FOUND.getMessage(),
                    MessageConstant.MESSAGE_LOG_FILE.getMessage(args));
        }

        return false;
    } catch (SecurityException e) {
        m_log.info("openFile : " + e.getMessage());
        if (m_initFlag) {
            // ??
            // message.log.agent.1={0}?
            // message.log.agent.4=????????
            String[] args = { getFilePath() };
            sendMessage(PriorityConstant.TYPE_WARNING, MessageConstant.AGENT.getMessage(),
                    MessageConstant.MESSAGE_LOG_FAILED_TO_READ_FILE.getMessage(),
                    MessageConstant.MESSAGE_LOG_FILE.getMessage(args) + "\n" + e.getMessage());
        }
        return false;
    } catch (IOException e) {
        m_log.info("openFile : " + e.getMessage());
        if (m_initFlag) {
            // ??
            // message.log.agent.1={0}?
            // message.log.agent.4=????????
            String[] args = { getFilePath() };
            sendMessage(PriorityConstant.TYPE_INFO, MessageConstant.AGENT.getMessage(),
                    MessageConstant.MESSAGE_LOG_FAILED_TO_READ_FILE.getMessage(),
                    MessageConstant.MESSAGE_LOG_FILE.getMessage(args));
        }
        return false;
    } finally {
        // ??????????????
        if (fc != null && fileChannel == null) {
            try {
                fc.close();
            } catch (IOException e) {
                m_log.warn(e.getMessage(), e);
            }
        }
        m_initFlag = false;
    }
}