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.linuxbox.enkive.archiver.AbstractMessageArchivingService.java

private String saveToDisk(String messageData, String fileName)
        throws FailedToEmergencySaveException, SaveFileAlreadyExistsException {
    File emergencySaveFile = null;
    String emergencySaveFilePath = "UNKNOWN";
    BufferedWriter out = null;//from www .  ja v a 2s.  c  o m
    FileOutputStream fileStream = null;
    try {
        emergencySaveFile = new File(getEmergencySaveRoot(), fileName);
        emergencySaveFilePath = emergencySaveFile.getCanonicalPath();
        fileStream = new FileOutputStream(emergencySaveFile);
        FileLock lock = null;
        try {
            lock = fileStream.getChannel().tryLock();
            if (lock == null) {
                throw new SaveFileAlreadyExistsException(emergencySaveFilePath);
            }

            out = new BufferedWriter(new OutputStreamWriter(fileStream));
            out.write(messageData);

            if (LOGGER.isInfoEnabled()) {
                LOGGER.info("Saved message to file: \"" + emergencySaveFilePath + "\"");
            }

            return emergencySaveFilePath;
        } finally {
            if (lock != null) {
                lock.release();
            }
        }
    } catch (IOException e) {
        LOGGER.fatal("Emergency save to disk failed. ", e);
        throw new FailedToEmergencySaveException(e);
    } finally {
        try {
            if (out != null) {
                out.close();
            } else if (fileStream != null) {
                fileStream.close();
            }
        } catch (IOException e) {
            if (LOGGER.isWarnEnabled()) {
                LOGGER.warn("Could not close emergency save file \"" + emergencySavePath + "\".");
            }
        }
    }
}

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From source file:org.totschnig.myexpenses.util.Utils.java

public static boolean copy(File src, File dst) {
    FileInputStream srcStream = null;
    FileOutputStream dstStream = null;
    try {/*from   w  w w . ja v  a2s  . c om*/
        srcStream = new FileInputStream(src);
        dstStream = new FileOutputStream(dst);
        dstStream.getChannel().transferFrom(srcStream.getChannel(), 0, srcStream.getChannel().size());
        return true;
    } catch (FileNotFoundException e) {
        Log.e("MyExpenses", e.getLocalizedMessage());
        return false;
    } catch (IOException e) {
        Log.e("MyExpenses", e.getLocalizedMessage());
        return false;
    } finally {
        try {
            srcStream.close();
        } catch (Exception e) {
        }
        try {
            dstStream.close();
        } catch (Exception e) {
        }
    }
}

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From source file:io.spring.initializr.generator.ProjectGenerator.java

private File downloadExternalStructure(String urlStr, File file) throws IOException {
    URL url = new URL(urlStr);
    String filename = FilenameUtils.getBaseName(urlStr) + "." + FilenameUtils.getExtension(urlStr);
    log.info("Filename: " + filename);
    ReadableByteChannel rbc = Channels.newChannel(url.openStream());
    File f = new File(file, filename);
    FileOutputStream fos = new FileOutputStream(f);
    fos.getChannel().transferFrom(rbc, 0, Long.MAX_VALUE);
    fos.close();//ww  w  .  jav a2s  . c  o m
    rbc.close();
    return f;
}

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From source file:org.wso2.carbon.identity.common.testng.CarbonBasedTestListener.java

private void copyDefaultConfigsIfNotExists(Class callerClass) {

    URL carbonXmlUrl = callerClass.getClassLoader().getResource("repository/conf/carbon.xml");
    boolean needToCopyCarbonXml = false;
    if (carbonXmlUrl == null) {
        needToCopyCarbonXml = true;/*from www . j  av a2s . c  om*/
    } else {
        File file = new File(carbonXmlUrl.getPath());
        needToCopyCarbonXml = !file.exists();
    }
    if (needToCopyCarbonXml) {
        try {
            //Copy default identity xml into temp location and use it.
            URL url = CarbonBasedTestListener.class.getClassLoader().getResource("repository/conf/carbon.xml");
            InputStream inputStream = url.openStream();
            ReadableByteChannel inputChannel = Channels.newChannel(inputStream);

            Path tmpDirPath = Paths.get(System.getProperty("java.io.tmpdir"), "tests",
                    callerClass.getSimpleName());
            Path repoConfPath = Paths.get(tmpDirPath.toUri().getPath(), "repository", "conf");
            Path carbonXMLPath = repoConfPath.resolve("carbon.xml");
            Path carbonXML = Files.createFile(carbonXMLPath);
            FileOutputStream fos = new FileOutputStream(carbonXML.toFile());
            WritableByteChannel targetChannel = fos.getChannel();
            //Transfer data from input channel to output channel
            ((FileChannel) targetChannel).transferFrom(inputChannel, 0, Short.MAX_VALUE);
            inputStream.close();
            targetChannel.close();
            fos.close();
            System.setProperty(TestConstants.CARBON_CONFIG_DIR_PATH, tmpDirPath.toString());
        } catch (IOException e) {
            log.error("Failed to copy carbon.xml", e);
        }
    } else {
        try {
            System.setProperty(TestConstants.CARBON_CONFIG_DIR_PATH,
                    Paths.get(carbonXmlUrl.toURI()).getParent().toString());
        } catch (URISyntaxException e) {
            log.error("Failed to copy path for carbon.xml", e);
        }
    }

}

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From source file:org.eclipse.orion.internal.server.servlets.xfer.ClientImport.java

/**
 * A put is used to send a chunk of a file.
 *///from w  w  w . jav  a2  s. c o m
void doPut(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
    int transferred = getTransferred();
    int length = getLength();
    int headerLength = Integer.valueOf(req.getHeader(ProtocolConstants.HEADER_CONTENT_LENGTH));
    String rangeString = req.getHeader(ProtocolConstants.HEADER_CONTENT_RANGE);
    if (rangeString == null)
        rangeString = "bytes 0-" + (length - 1) + '/' + length; //$NON-NLS-1$
    ContentRange range = ContentRange.parse(rangeString);
    if (length != range.getLength()) {
        fail(req, resp, "Chunk specifies an incorrect document length");
        return;
    }
    if (range.getStartByte() > transferred) {
        fail(req, resp, "Chunk missing; Expected start byte: " + transferred);
        return;
    }
    if (range.getEndByte() < range.getStartByte()) {
        fail(req, resp, "Invalid range: " + rangeString);
        return;
    }
    int chunkSize = 1 + range.getEndByte() - range.getStartByte();
    if (chunkSize != headerLength) {
        fail(req, resp, "Content-Range doesn't agree with Content-Length");
        return;
    }
    byte[] chunk = readChunk(req, chunkSize);
    FileOutputStream fout = null;
    try {
        fout = new FileOutputStream(new File(getStorageDirectory(), FILE_DATA), true);
        FileChannel channel = fout.getChannel();
        channel.position(range.getStartByte());
        channel.write(ByteBuffer.wrap(chunk));
        channel.close();
    } finally {
        try {
            if (fout != null)
                fout.close();
        } catch (IOException e) {
            //ignore secondary failure
        }
    }
    transferred = range.getEndByte() + 1;
    setTransferred(transferred);
    save();
    if (transferred >= length) {
        completeTransfer(req, resp);
        return;
    }
    resp.setStatus(308);//Resume Incomplete
    resp.setHeader("Range", "bytes 0-" + range.getEndByte()); //$NON-NLS-2$
    setResponseLocationHeader(req, resp);
}

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From source file:com.splout.db.dnode.Fetcher.java

/**
 * In case of interrupted, written file is not deleted.
 *///  w  ww.  j  a v  a 2s  . c  o  m
private void copyFile(File sourceFile, File destFile, Reporter reporter)
        throws IOException, InterruptedException {
    if (!destFile.exists()) {
        destFile.createNewFile();
    }
    FileChannel source = null;
    FileChannel destination = null;

    Throttler throttler = new Throttler((double) bytesPerSecThrottle);

    FileInputStream iS = null;
    FileOutputStream oS = null;

    try {
        iS = new FileInputStream(sourceFile);
        oS = new FileOutputStream(destFile);
        source = iS.getChannel();
        destination = oS.getChannel();
        long bytesSoFar = 0;
        long reportingBytesSoFar = 0;
        long size = source.size();

        int transferred = 0;

        while (bytesSoFar < size) {
            // Needed to being able to be interrupted at any moment.
            if (Thread.interrupted()) {
                throw new InterruptedException();
            }

            // Casting to int here is safe since we will transfer at most "downloadBufferSize" bytes.
            // This is done on purpose for being able to implement Throttling.
            transferred = (int) destination.transferFrom(source, bytesSoFar, downloadBufferSize);
            bytesSoFar += transferred;
            reportingBytesSoFar += transferred;
            throttler.incrementAndThrottle(transferred);
            if (reportingBytesSoFar >= bytesToReportProgress) {
                reporter.progress(reportingBytesSoFar);
                reportingBytesSoFar = 0l;
            }
        }

        if (reporter != null) {
            reporter.progress(reportingBytesSoFar);
        }

    } catch (InterruptedException e) {
        e.printStackTrace();
    } finally {
        if (iS != null) {
            iS.close();
        }
        if (oS != null) {
            oS.close();
        }
        if (source != null) {
            source.close();
        }
        if (destination != null) {
            destination.close();
        }
    }
}

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From source file:org.paxle.crawler.fs.impl.FsCrawler.java

private File copyChanneled(final File file, final ICrawlerDocument cdoc, final boolean useFsync) {
    logger.info(String.format("Copying '%s' using the copy mechanism of the OS%s", file,
            (useFsync) ? " with fsync" : ""));

    final ITempFileManager tfm = this.contextLocal.getCurrentContext().getTempFileManager();
    if (tfm == null) {
        cdoc.setStatus(ICrawlerDocument.Status.UNKNOWN_FAILURE,
                "Cannot access ITempFileMananger from " + Thread.currentThread().getName());
        return null;
    }//from w w w  .jav a  2  s  .  c  o  m

    FileInputStream fis = null;
    FileOutputStream fos = null;
    File out = null;
    try {
        out = tfm.createTempFile();
        fis = new FileInputStream(file);
        fos = new FileOutputStream(out);

        final FileChannel in_fc = fis.getChannel();
        final FileChannel out_fc = fos.getChannel();

        long txed = 0L;
        while (txed < in_fc.size())
            txed += in_fc.transferTo(txed, in_fc.size() - txed, out_fc);

        if (useFsync)
            out_fc.force(false);
        out_fc.close();

        try {
            detectFormats(cdoc, fis);
        } catch (IOException ee) {
            logger.warn(
                    String.format("Error detecting format of '%s': %s", cdoc.getLocation(), ee.getMessage()));
        }
    } catch (IOException e) {
        logger.error(String.format("Error copying '%s' to '%s': %s", cdoc.getLocation(), out, e.getMessage()),
                e);
        cdoc.setStatus(ICrawlerDocument.Status.UNKNOWN_FAILURE, e.getMessage());
    } finally {
        if (fis != null)
            try {
                fis.close();
            } catch (IOException e) {
                /* ignore */}
        if (fos != null)
            try {
                fos.close();
            } catch (IOException e) {
                /* ignore */}
    }
    return out;
}

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From source file:tilt.image.Picture.java

/**
 * Create a picture. Pictures stores links to the various image files.
 * @param options options from the geoJSON file
 * @param text the text to align with//  w  w w.  java  2  s . co m
 * @param poster the ipaddress of the poster of the image (DDoS prevention)
 * @throws TiltException 
 */
public Picture(Options options, TextIndex text, InetAddress poster) throws TiltException {
    try {
        URL url = new URL(options.url);
        // use url as id for now
        id = options.url;
        this.text = text;
        this.poster = poster;
        // try to register the picture
        PictureRegistry.register(this, options.url);
        // fetch picture from url
        ReadableByteChannel rbc = Channels.newChannel(url.openStream());
        orig = File.createTempFile(PictureRegistry.PREFIX, PictureRegistry.SUFFIX);
        FileOutputStream fos = new FileOutputStream(orig);
        fos.getChannel().transferFrom(rbc, 0, Long.MAX_VALUE);
        fos.close();
        String mimeType = getFormatName();
        if (!mimeType.equals(PNG_TYPE))
            convertToPng();
        this.options = options;
        this.coords = new Double[4][2];
        for (int i = 0; i < 4; i++) {
            JSONArray vector = (JSONArray) options.coords.get(i);
            for (int j = 0; j < 2; j++) {
                this.coords[i][j] = (Double) vector.get(j);
            }
        }
    } catch (Exception e) {
        throw new TiltException(e);
    }
}

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From source file:org.apache.hadoop.hdfs.server.datanode.TestDirectoryScanner.java

/**
 * Truncate a block file/*w  w  w  . jav  a2 s.  c  o  m*/
 */
private long truncateBlockFile() throws IOException {
    synchronized (fds) {
        for (ReplicaInfo b : FsDatasetTestUtil.getReplicas(fds, bpid)) {
            File f = b.getBlockFile();
            File mf = b.getMetaFile();
            // Truncate a block file that has a corresponding metadata file
            if (f.exists() && f.length() != 0 && mf.exists()) {
                FileOutputStream s = null;
                FileChannel channel = null;
                try {
                    s = new FileOutputStream(f);
                    channel = s.getChannel();
                    channel.truncate(0);
                    LOG.info("Truncated block file " + f.getAbsolutePath());
                    return b.getBlockId();
                } finally {
                    IOUtils.cleanup(LOG, channel, s);
                }
            }
        }
    }
    return 0;
}

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From source file:math.tools.Browse.java

private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton2ActionPerformed
    FileOutputStream fos;
    new File(System.getProperty("user.home") + "//MathHelper//tools//" + table[jTable1.getSelectedRow()][0]
            + ".jar").delete();
    try {/*from ww w .  j  a  va 2 s .c o m*/
        URL website = new URL("" + table[jTable1.getSelectedRow()][4]);
        ReadableByteChannel rbc = Channels.newChannel(website.openStream());
        fos = new FileOutputStream(System.getProperty("user.home") + "//MathHelper//tools//"
                + table[jTable1.getSelectedRow()][0] + ".jar");
        fos.getChannel().transferFrom(rbc, 0, Long.MAX_VALUE);
    } catch (IOException ex) {
        Logger.getLogger(Browse.class.getName()).log(Level.SEVERE, null, ex);
    }
    try {
        Runtime.getRuntime().exec("java -jar " + System.getProperty("user.home") + "//MathHelper//tools//"
                + table[jTable1.getSelectedRow()][0] + ".jar");
    } catch (IOException ex) {
        Logger.getLogger(Browse.class.getName()).log(Level.SEVERE, null, ex);
    }
}

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