Example usage for java.io FileOutputStream getChannel

Introduction

In this page you can find the example usage for java.io FileOutputStream getChannel.

Prototype

public FileChannel getChannel() 

Source Link

Document

Returns the unique java.nio.channels.FileChannel FileChannel object associated with this file output stream.

Usage

From source file:com.recomdata.transmart.data.export.util.ExportImageProcessor.java

public void run() {
    URL imageURL = null;//from   ww  w . ja  v a  2 s .c o  m
    File imageFile = new File(imagesTempDir + File.separator + filename);
    ReadableByteChannel rbc = null;
    FileOutputStream fos = null;
    try {
        if (StringUtils.isEmpty(imageURI))
            return;

        imageURL = new URL(imageURI);
        rbc = Channels.newChannel(imageURL.openStream());
        fos = new FileOutputStream(imageFile);
        fos.getChannel().transferFrom(rbc, 0, 1 << 24);
    } catch (MalformedURLException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        if (null != fos)
            try {
                fos.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
    }
}

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From source file:org.pentaho.platform.osgi.ServerSocketBasedKarafInstanceResolver.java

private void assignAvailableCacheFolderForType(KarafInstance instance) {

    // something like karaf/caches
    String cacheParentFolder = instance.getCacheParentFolder();

    // We separate the caches by client type to avoid reuse of an inappropriate data folder
    File clientTypeCacheFolder = new File(cacheParentFolder + "/" + instance.getClientType());
    clientTypeCacheFolder.mkdirs();//  w  w  w . j a  v  a2  s .  co m

    File[] dataDirectories = clientTypeCacheFolder.listFiles(new FilenameFilter() {
        @Override
        public boolean accept(File dir, String name) {
            return name.startsWith(DATA);
        }
    });

    int maxInstanceNoFound = 0;
    Pattern pattern = Pattern.compile(DATA + "\\-([0-9]+)");

    // Go through existing data directories. If one is not in-use, use that. If not find the highest number and create
    // one greater
    for (File dataDirectory : dataDirectories) {
        boolean locked = true;
        Matcher matcher = pattern.matcher(dataDirectory.getName());
        if (!matcher.matches()) {
            // unexpected directory, not a data folder, skipping
            continue;
        }
        // extract the data folder number
        int instanceNo = Integer.parseInt(matcher.group(1));

        maxInstanceNoFound = Math.max(maxInstanceNoFound, instanceNo);

        File lockFile = new File(dataDirectory, ".lock");
        FileLock lock = null;
        if (!lockFile.exists()) {
            // Lock file was not present, we can use it
            locked = false;
        } else {
            // Lock file was there, see if another process actually holds a lock on it
            try {
                FileOutputStream fileOutputStream = new FileOutputStream(lockFile);
                try {
                    lock = fileOutputStream.getChannel().tryLock();
                    if (lock != null) {
                        // not locked by another program
                        instance.setCacheLock(lock);
                        locked = false;
                    }
                } catch (Exception e) {
                    // Lock active on another program
                }
            } catch (FileNotFoundException e) {
                logger.error("Error locking file in data cache directory", e);
            }
        }

        if (!locked) {
            instance.setCachePath(dataDirectory.getPath());
            // we're good to use this one, break out of existing directory loop
            break;
        }
    }

    if (instance.getCachePath() == null) {
        // Create a new cache folder
        File newCacheFolder = null;
        while (newCacheFolder == null) {
            maxInstanceNoFound++;
            File candidate = new File(clientTypeCacheFolder, DATA + "-" + maxInstanceNoFound);
            if (candidate.exists()) {
                // Another process slipped in and created a folder, lets skip over them
                continue;
            }
            newCacheFolder = candidate;
        }

        FileOutputStream fileOutputStream = null;
        try {
            newCacheFolder.mkdir();
            // create lock file and lock it for this process

            File lockFile = new File(newCacheFolder, ".lock");
            fileOutputStream = new FileOutputStream(lockFile);
            FileLock lock = fileOutputStream.getChannel().lock();
            instance.setCachePath(newCacheFolder.getPath());
            instance.setCacheLock(lock);
        } catch (IOException e) {
            logger.error("Error creating data cache folder", e);
        }
    }

}

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From source file:com.frostwire.util.MP4Muxer.java

public void mux(String video, String audio, String output, final MP4Metadata mt) throws IOException {

    FileInputStream videoIn = new FileInputStream(video);
    FileInputStream audioIn = new FileInputStream(audio);

    try {/*from  w w w .ja  va 2s.  c  o  m*/
        FileChannel videoChannel = videoIn.getChannel();
        Movie videoMovie = buildMovie(videoChannel);

        FileChannel audioChannel = audioIn.getChannel();
        Movie audioMovie = buildMovie(audioChannel);

        Movie outMovie = new Movie();

        for (Track trk : videoMovie.getTracks()) {
            outMovie.addTrack(trk);
        }

        for (Track trk : audioMovie.getTracks()) {
            outMovie.addTrack(trk);
        }

        Container out = new DefaultMp4Builder() {
            @Override
            protected FileTypeBox createFileTypeBox(Movie movie) {
                List<String> minorBrands = new LinkedList<String>();
                minorBrands.add("iso6");
                minorBrands.add("avc1");
                minorBrands.add("mp41");
                minorBrands.add("\0\0\0\0");

                return new FileTypeBox("MP4 ", 0, minorBrands);
            }

            @Override
            protected MovieBox createMovieBox(Movie movie, Map<Track, int[]> chunks) {
                MovieBox moov = super.createMovieBox(movie, chunks);
                moov.getMovieHeaderBox().setVersion(0);
                return moov;
            }

            @Override
            protected TrackBox createTrackBox(Track track, Movie movie, Map<Track, int[]> chunks) {
                TrackBox trak = super.createTrackBox(track, movie, chunks);

                trak.getTrackHeaderBox().setVersion(0);
                trak.getTrackHeaderBox().setVolume(1.0f);

                return trak;
            }

            @Override
            protected Box createUdta(Movie movie) {
                return mt != null ? addUserDataBox(mt) : null;
            }
        }.build(outMovie);

        FileOutputStream fos = new FileOutputStream(output);
        try {
            out.writeContainer(fos.getChannel());
        } finally {
            IOUtils.closeQuietly(fos);
        }
    } finally {
        IOUtils.closeQuietly(videoIn);
        IOUtils.closeQuietly(audioIn);
    }
}

---

From source file:com.frostwire.util.MP4Muxer.java

public void demuxAudio(String video, String output, final MP4Metadata mt) throws IOException {

    FileInputStream videoIn = new FileInputStream(video);

    try {//from  w w  w.  ja  v  a2s .  co  m
        FileChannel videoChannel = videoIn.getChannel();
        Movie videoMovie = buildMovie(videoChannel);

        Track audioTrack = null;

        for (Track trk : videoMovie.getTracks()) {
            if (trk.getHandler().equals("soun")) {
                audioTrack = trk;
                break;
            }
        }

        if (audioTrack == null) {
            IOUtils.closeQuietly(videoIn);
            return;
        }

        Movie outMovie = new Movie();
        outMovie.addTrack(audioTrack);

        Container out = new DefaultMp4Builder() {
            @Override
            protected FileTypeBox createFileTypeBox(Movie movie) {
                List<String> minorBrands = new LinkedList<String>();
                minorBrands.add("M4A ");
                minorBrands.add("mp42");
                minorBrands.add("isom");
                minorBrands.add("\0\0\0\0");

                return new FileTypeBox("M4A ", 0, minorBrands);
            }

            @Override
            protected MovieBox createMovieBox(Movie movie, Map<Track, int[]> chunks) {
                MovieBox moov = super.createMovieBox(movie, chunks);
                moov.getMovieHeaderBox().setVersion(0);
                return moov;
            }

            @Override
            protected TrackBox createTrackBox(Track track, Movie movie, Map<Track, int[]> chunks) {
                TrackBox trak = super.createTrackBox(track, movie, chunks);

                trak.getTrackHeaderBox().setVersion(0);
                trak.getTrackHeaderBox().setVolume(1.0f);

                return trak;
            }

            @Override
            protected Box createUdta(Movie movie) {
                return mt != null ? addUserDataBox(mt) : null;
            }
        }.build(outMovie);

        FileOutputStream fos = new FileOutputStream(output);
        try {
            out.writeContainer(fos.getChannel());
        } finally {
            IOUtils.closeQuietly(fos);
        }
    } finally {
        IOUtils.closeQuietly(videoIn);
    }
}

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From source file:net.ytbolg.mcxa.ImportOldMc.java

void fileChannelCopy(File s, File t) {

    FileInputStream fi = null;/*  w w  w.j a v  a2 s  . co m*/

    FileOutputStream fo = null;

    FileChannel in = null;

    FileChannel out = null;

    try {

        fi = new FileInputStream(s);

        fo = new FileOutputStream(t);

        in = fi.getChannel();//?

        out = fo.getChannel();//?

        in.transferTo(0, in.size(), out);//?in???out?

    } catch (IOException e) {

        e.printStackTrace();

    } finally {

        try {

            fi.close();

            in.close();

            fo.close();

            out.close();

        } catch (IOException e) {

            e.printStackTrace();

        }

    }

}

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From source file:org.chromium.APKPackager.java

private void copyFile(File src, File dest) throws FileNotFoundException, IOException {
    FileInputStream istream = new FileInputStream(src);
    FileOutputStream ostream = new FileOutputStream(dest);
    FileChannel input = istream.getChannel();
    FileChannel output = ostream.getChannel();

    try {//ww  w  .j ava 2 s  .  co m
        input.transferTo(0, input.size(), output);
    } finally {
        istream.close();
        ostream.close();
        input.close();
        output.close();
    }
}

---

From source file:org.tinymediamanager.scraper.http.Url.java

/**
 * Download an Url to a file via NIO FileChannel (synchron)
 * /* w w  w .  ja  v  a 2s  .  co m*/
 * @param file
 * @return successful or not
 */
public boolean download(File file) {
    try {
        InputStream is = getInputStream();
        if (is == null) {
            return false;
        }
        ReadableByteChannel rbc = Channels.newChannel(is);
        FileOutputStream fos = new FileOutputStream(file);
        fos.getChannel().transferFrom(rbc, 0, Long.MAX_VALUE);
        fos.close();
        return true;
    } catch (IOException e) {
        LOGGER.error("Error downloading " + this.url);
    } catch (InterruptedException ignored) {
        if (call != null) {
            call.cancel();
        }
    }
    return false;
}

---

From source file:com.cloud.maint.UpgradeManagerImpl.java

public String deployNewAgent(String url) {
    s_logger.info("Updating agent with binary from " + url);

    final HttpClient client = new HttpClient(s_httpClientManager);
    final GetMethod method = new GetMethod(url);
    int response;
    File file = null;// ww w .ja  v a 2  s.  co m
    try {
        response = client.executeMethod(method);
        if (response != HttpURLConnection.HTTP_OK) {
            s_logger.warn("Retrieving the agent gives response code: " + response);
            return "Retrieving the file from " + url + " got response code: " + response;
        }

        final InputStream is = method.getResponseBodyAsStream();
        file = File.createTempFile("agent-", "-" + Long.toString(new Date().getTime()));
        file.deleteOnExit();

        s_logger.debug("Retrieving new agent into " + file.getAbsolutePath());

        final FileOutputStream fos = new FileOutputStream(file);

        final ByteBuffer buffer = ByteBuffer.allocate(2048);
        final ReadableByteChannel in = Channels.newChannel(is);
        final WritableByteChannel out = fos.getChannel();

        while (in.read(buffer) != -1) {
            buffer.flip();
            out.write(buffer);
            buffer.clear();
        }

        in.close();
        out.close();

        s_logger.debug("New Agent zip file is now retrieved");
    } catch (final HttpException e) {
        return "Unable to retrieve the file from " + url;
    } catch (final IOException e) {
        return "Unable to retrieve the file from " + url;
    } finally {
        method.releaseConnection();
    }

    file.delete();

    return "File will be deployed.";
}

---

From source file:io.github.microcks.service.ServiceService.java

/** Download a remote HTTP URL into a temporary local file. */
private String handleRemoteFileDownload(String remoteUrl) throws IOException {
    // Build remote Url and local file.
    URL website = new URL(remoteUrl);
    String localFile = System.getProperty("java.io.tmpdir") + "/microcks-" + System.currentTimeMillis()
            + ".project";
    // Set authenticator instance.
    Authenticator.setDefault(new UsernamePasswordAuthenticator(username, password));
    ReadableByteChannel rbc = null;
    FileOutputStream fos = null;
    try {/*  www  . j av  a2 s .  c  o m*/
        rbc = Channels.newChannel(website.openStream());
        // Transfer file to local.
        fos = new FileOutputStream(localFile);
        fos.getChannel().transferFrom(rbc, 0, Long.MAX_VALUE);
    } finally {
        if (fos != null)
            fos.close();
        if (rbc != null)
            rbc.close();
    }
    return localFile;
}

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