Example usage for java.util.zip GZIPOutputStream GZIPOutputStream

Introduction

In this page you can find the example usage for java.util.zip GZIPOutputStream GZIPOutputStream.

Prototype

public GZIPOutputStream(OutputStream out) throws IOException 

Source Link

Document

Creates a new output stream with a default buffer size.

Usage

From source file:uk.ac.ebi.eva.test.utils.JobTestUtils.java

public static File makeGzipFile(String content) throws IOException {
    File tempFile = createTempFile();
    try (FileOutputStream output = new FileOutputStream(tempFile)) {
        try (Writer writer = new OutputStreamWriter(new GZIPOutputStream(output), "UTF-8")) {
            writer.write(content);//from w w  w.j  av a  2s .  c  o  m
        }
    }
    return tempFile;
}

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From source file:gov.nih.nci.cabig.caaers.web.filters.GzipFilter.java

/**
 * Performs the filtering for a request.
 *//*from   w  w w .jav  a2s  . c o m*/
protected void doFilter(final HttpServletRequest request, final HttpServletResponse response,
        final FilterChain chain) throws Exception {
    if (!isIncluded(request) && acceptsEncoding(request, "gzip")) {
        // Client accepts zipped content
        if (LOG.isDebugEnabled()) {
            LOG.debug(request.getRequestURL() + ". Writing with gzip compression");
        }

        // Create a gzip stream
        final ByteArrayOutputStream compressed = new ByteArrayOutputStream();
        final GZIPOutputStream gzout = new GZIPOutputStream(compressed);

        // Handle the request
        final GenericResponseWrapper wrapper = new GenericResponseWrapper(response, gzout);
        chain.doFilter(request, wrapper);
        wrapper.flush();

        gzout.close();

        //return on error or redirect code, because response is already committed
        int statusCode = wrapper.getStatus();
        if (statusCode != HttpServletResponse.SC_OK) {
            return;
        }

        //Saneness checks
        byte[] compressedBytes = compressed.toByteArray();
        boolean shouldGzippedBodyBeZero = ResponseUtil.shouldGzippedBodyBeZero(compressedBytes, request);
        boolean shouldBodyBeZero = ResponseUtil.shouldBodyBeZero(request, wrapper.getStatus());
        if (shouldGzippedBodyBeZero || shouldBodyBeZero) {
            compressedBytes = new byte[0];
        }

        try {
            // Write the zipped body
            ResponseUtil.addGzipHeader(response);
            // see http://httpd.apache.org/docs/2.0/mod/mod_deflate.html or 'High Performance Web Sites' by Steve Souders.
            response.addHeader(VARY, "Accept-Encoding");
            response.addHeader(VARY, "User-Agent");
            response.setContentLength(compressedBytes.length);
        } catch (ResponseHeadersNotModifiableException e) {
            return;
        }

        response.getOutputStream().write(compressedBytes);
    } else {
        // Client does not accept zipped content - don't bother zipping
        if (LOG.isDebugEnabled()) {
            LOG.debug(request.getRequestURL()
                    + ". Writing without gzip compression because the request does not accept gzip.");
        }
        chain.doFilter(request, response);
    }
}

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From source file:eu.delving.sip.files.FileImporter.java

@Override
public void run() {
    int fileBlocks = (int) (inputFile.length() / BLOCK_SIZE);
    progressListener.prepareFor(fileBlocks);
    try {/*  w w  w.j  a  v a  2  s. c o  m*/
        OutputStream outputStream = new GZIPOutputStream(new FileOutputStream(dataSet.importedOutput()));
        InputStream inputStream = new FileInputStream(inputFile);
        inputStream = countingInputStream = new CountingInputStream(inputStream);
        try {
            String name = inputFile.getName();
            if (name.endsWith(".csv")) {
                consumeCSVFile(inputStream, outputStream);
            } else if (name.endsWith(".xml.zip")) {
                consumeXMLZipFile(inputStream, outputStream);
            } else if (name.endsWith(".xml") || name.endsWith(".xml.gz")) {
                if (name.endsWith(".xml.gz"))
                    inputStream = new GZIPInputStream(inputStream);
                consumeXMLFile(inputStream, outputStream);
            } else {
                throw new IllegalArgumentException("Unrecognized file extension: " + name);
            }
        } finally {
            IOUtils.closeQuietly(outputStream);
            IOUtils.closeQuietly(inputStream);
        }
        delete(statsFile(dataSet.importedOutput().getParentFile(), false, null));
        if (finished != null)
            finished.run();
    } catch (CancelException e) {
        delete(dataSet.importedOutput());
        progressListener.getFeedback().alert("Cancelled", e);
    } catch (IOException e) {
        delete(dataSet.importedOutput());
        progressListener.getFeedback().alert("Unable to import: " + e.getMessage(), e);
    }
}

---

From source file:com.generalbioinformatics.rdf.AbstractTripleStore.java

public RecordStream sparqlSelect(String query) throws StreamException {
    try {/*from w ww .j a  v  a 2 s. c om*/
        RecordStream rs;

        long start = System.currentTimeMillis();

        if (cacheDir == null) {
            rs = _sparqlSelectDirect(query);
            long delta = System.currentTimeMillis() - start;
            fireQueryPerformed(query, delta);
        } else {
            if (!cacheDir.exists()) {
                if (!cacheDir.mkdirs())
                    throw new IOException("Could not create cache directory");
            }

            int hashCode = query.hashCode() + 3 * this.hashCode();
            String hashCodeString = String.format("%08x", hashCode);
            File cacheSubdir = new File(cacheDir, hashCodeString.substring(0, 2));
            File out = new File(cacheSubdir, hashCodeString + ".txt.gz");

            if (out.exists()) {
                // merely "touch" the file, so we know the cached file was used recently.
                org.apache.commons.io.FileUtils.touch(out);
            } else {
                // make subdir if it doesn't exist.
                if (!cacheSubdir.exists()) {
                    if (!cacheSubdir.mkdir())
                        throw new IOException("Couldn't create directory " + cacheSubdir);
                }

                File tmp = File.createTempFile(hashCodeString + "-", ".tmp", cacheSubdir);
                try {
                    OutputStream os = new FileOutputStream(tmp);
                    GZIPOutputStream gos = new GZIPOutputStream(os);
                    RecordStream rsx = _sparqlSelectDirect(query);
                    long delta = System.currentTimeMillis() - start;
                    Utils.queryResultsToFile(this, delta, rsx, query, gos);
                    gos.finish();
                    os.close();
                    fireQueryPerformed(query, delta);
                } catch (RuntimeException e) {
                    tmp.delete();
                    throw (e);
                } catch (StreamException e) {
                    tmp.delete();
                    throw (e);
                }
                tmp.renameTo(out);
            }

            InputStream is = HFileUtils.openZipStream(out);
            rs = TsvRecordStream.open(is).filterComments().get();
        }

        return rs;
    } catch (IOException ex) {
        throw new StreamException(ex);
    }
}

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From source file:com.handpay.ibenefit.framework.util.WebUtils.java

public static OutputStream buildGzipOutputStream(HttpServletResponse response) throws IOException {
    response.setHeader("Content-Encoding", "gzip");
    response.setHeader("Vary", "Accept-Encoding");
    return new GZIPOutputStream(response.getOutputStream());
}

---

From source file:ca.uhn.fhir.rest.server.servlet.ServletRestfulResponse.java

@Override
public Writer getResponseWriter(int theStatusCode, String theStatusMessage, String theContentType,
        String theCharset, boolean theRespondGzip) throws UnsupportedEncodingException, IOException {
    addHeaders();/* ww  w. j  ava 2s. co  m*/
    HttpServletResponse theHttpResponse = getRequestDetails().getServletResponse();
    theHttpResponse.setCharacterEncoding(theCharset);
    theHttpResponse.setStatus(theStatusCode);
    theHttpResponse.setContentType(theContentType);
    if (theRespondGzip) {
        theHttpResponse.addHeader(Constants.HEADER_CONTENT_ENCODING, Constants.ENCODING_GZIP);
        return new OutputStreamWriter(new GZIPOutputStream(theHttpResponse.getOutputStream()),
                Constants.CHARSET_NAME_UTF8);
    } else {
        return theHttpResponse.getWriter();
    }
}

---

From source file:GZIPFilter.java

public GZIPResponseStream(HttpServletResponse response) throws IOException {
    super();/*from   ww  w.ja v  a  2  s  .co m*/
    closed = false;
    this.response = response;
    this.output = response.getOutputStream();
    baos = new ByteArrayOutputStream();
    gzipstream = new GZIPOutputStream(baos);
}

---

From source file:ja.lingo.engine.Exporter.java

public void toFile(String fileName, IArticleList articleList, IMonitor monitor) throws IOException {
    File listTempFile = EngineFiles.createTempFile("html_export_list.html");

    TarOutputStream tos = null;/*w w w  . ja v  a2  s .com*/
    try {
        tos = new TarOutputStream(
                new GZIPOutputStream(new BufferedOutputStream(new FileOutputStream(fileName))));

        DecimalFormat format = createFormat(articleList.size() - 1);

        OutputStream listOs = null;
        try {
            listOs = new BufferedOutputStream(new FileOutputStream(listTempFile));

            writeArticles(articleList, tos, listOs, format, monitor);
        } finally {
            if (listOs != null) {
                try {
                    listOs.close();
                } catch (IOException e) {
                    LOG.error("Exception caught when tried to close list HTML FileOutputStream", e);
                }
            }
        }

        putListFile(listTempFile, tos);

        putIndexFile(articleList, tos);

        putCssFile(tos);

        tos.finish();

        monitor.finish();

    } finally {
        if (tos != null) {
            try {
                tos.close();
            } catch (IOException e) {
                LOG.error("Exception caught when tried to close TarOutputStream", e);
            }
        }

        listTempFile.delete();
    }
}

---

From source file:com.google.api.server.spi.IoUtilTest.java

private static byte[] compress(byte[] bytes) {
    try {/*  w  w  w  . j  a  v  a 2  s .  com*/
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        GZIPOutputStream gos = new GZIPOutputStream(baos);
        gos.write(bytes, 0, bytes.length);
        gos.close();
        return baos.toByteArray();
    } catch (IOException e) {
        throw new RuntimeException(e);
    }
}

---

From source file:com.thoughtworks.studios.shine.cruise.stage.details.StageStorage.java

public void save(Graph graph) {
    StageIdentifier identifier = extractStageIdentifier(graph);

    if (isStageStored(identifier)) {
        return;/*  w  w  w. j  a v a 2  s .  co m*/
    }

    synchronized (stageKey(identifier)) {
        if (isStageStored(identifier)) {
            return;
        }

        File file = new File(tmpStagePath(identifier));

        file.getParentFile().mkdirs();
        try {
            OutputStream os = new BufferedOutputStream(new GZIPOutputStream(new FileOutputStream(file)));
            graph.persistToTurtle(os);
            os.flush();
            os.close();
            file.renameTo(new File(stagePath(identifier)));
        } catch (IOException e) {
            throw new ShineRuntimeException(e);
        } finally {
            file.delete();
        }
    }
}

---

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