Example usage for com.google.common.io LimitInputStream LimitInputStream

Introduction

In this page you can find the example usage for com.google.common.io LimitInputStream LimitInputStream.

Prototype

public LimitInputStream(InputStream paramInputStream, long paramLong) 

Source Link

Usage

From source file:de.cosmocode.palava.bridge.content.StreamContent.java

@Override
public void write(OutputStream out) throws IOException {
    ByteStreams.copy(new LimitInputStream(stream, length), out);
}

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From source file:de.cosmocode.palava.bridge.content.StreamContent.java

@Override
public byte[] getBytes() throws IOException {
    return ByteStreams.toByteArray(new LimitInputStream(stream, length));
}

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From source file:org.jclouds.examples.blobstore.hdfs.io.HdfsPayloadSlicer.java

protected Payload doSlice(final FSDataInputStream inputStream, final long offset, final long length) {
    return new InputStreamSupplierPayload(new InputSupplier<InputStream>() {
        public InputStream getInput() throws IOException {
            if (offset > 0) {
                try {
                    inputStream.seek(offset);
                } catch (IOException e) {
                    Closeables.closeQuietly(inputStream);
                    throw e;
                }//from  w  ww .j  a  va 2 s .  c  o m
            }
            return new LimitInputStream(inputStream, length);
        }
    });
}

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From source file:org.apache.mahout.common.DevURandomSeedGenerator.java

/**
 * @return The requested number of random bytes, read directly from {@literal /dev/urandom}.
 * @throws SeedException If {@literal /dev/urandom} does not exist or is not accessible
 *//*from w ww.  j  a  v a 2s  .  c o  m*/
@Override
public byte[] generateSeed(int length) throws SeedException {
    FileInputStream in = null;
    try {
        in = new FileInputStream(DEV_URANDOM);
        return ByteStreams.toByteArray(new LimitInputStream(in, length));
    } catch (IOException ex) {
        throw new SeedException("Failed reading from " + DEV_URANDOM.getName(), ex);
    } catch (SecurityException ex) {
        // Might be thrown if resource access is restricted (such as in
        // an applet sandbox).
        throw new SeedException("SecurityManager prevented access to " + DEV_URANDOM.getName(), ex);
    } finally {
        Closeables.closeQuietly(in);
    }
}

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From source file:org.apache.hadoop.mapreduce.CryptoUtils.java

/**
 * Wraps a given InputStream with a CryptoInputStream. The size of the data
 * buffer required for the stream is specified by the
 * "mapreduce.job.encrypted-intermediate-data.buffer.kb" Job configuration
 * variable.//from   ww w  . j  a  va  2s  .com
 * 
 * If the value of 'length' is > -1, The InputStream is additionally wrapped
 * in a LimitInputStream. CryptoStreams are late buffering in nature. This
 * means they will always try to read ahead if they can. The LimitInputStream
 * will ensure that the CryptoStream does not read past the provided length
 * from the given Input Stream.
 * 
 * @param conf
 * @param in
 * @param length
 * @return InputStream
 * @throws IOException
 */
public static InputStream wrapIfNecessary(Configuration conf, InputStream in, long length) throws IOException {
    if (isShuffleEncrypted(conf)) {
        int bufferSize = getBufferSize(conf);
        if (length > -1) {
            in = new LimitInputStream(in, length);
        }
        byte[] offsetArray = new byte[8];
        IOUtils.readFully(in, offsetArray, 0, 8);
        long offset = ByteBuffer.wrap(offsetArray).getLong();
        CryptoCodec cryptoCodec = CryptoCodec.getInstance(conf);
        byte[] iv = new byte[cryptoCodec.getCipherSuite().getAlgorithmBlockSize()];
        IOUtils.readFully(in, iv, 0, cryptoCodec.getCipherSuite().getAlgorithmBlockSize());
        if (LOG.isDebugEnabled()) {
            LOG.debug("IV read from [" + Base64.encodeBase64URLSafeString(iv) + "]");
        }
        return new CryptoInputStream(in, cryptoCodec, bufferSize, getEncryptionKey(), iv,
                offset + cryptoPadding(conf));
    } else {
        return in;
    }
}

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From source file:com.googlecode.htmlcompressor.compressor.ClosureJavaScriptCompressor.java

private List<JSSourceFile> getDefaultExterns() throws IOException {
    InputStream input = ClosureJavaScriptCompressor.class.getResourceAsStream("/externs.zip");
    ZipInputStream zip = new ZipInputStream(input);
    List<JSSourceFile> externs = Lists.newLinkedList();
    for (ZipEntry entry = null; (entry = zip.getNextEntry()) != null;) {
        LimitInputStream entryStream = new LimitInputStream(zip, entry.getSize());
        externs.add(JSSourceFile.fromInputStream(entry.getName(), entryStream));
    }// w w w  .j  a  v  a  2  s  .c  o  m
    return externs;
}

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From source file:org.apache.hadoop.hdfs.tools.offlineImageViewer.LsrPBImage.java

public void visit(RandomAccessFile file) throws IOException {
    if (!FSImageUtil.checkFileFormat(file)) {
        throw new IOException("Unrecognized FSImage");
    }//ww w. ja  va 2 s  . co  m

    FileSummary summary = FSImageUtil.loadSummary(file);
    FileInputStream fin = null;
    try {
        fin = new FileInputStream(file.getFD());

        ArrayList<FileSummary.Section> sections = Lists.newArrayList(summary.getSectionsList());
        Collections.sort(sections, new Comparator<FileSummary.Section>() {
            @Override
            public int compare(FileSummary.Section s1, FileSummary.Section s2) {
                SectionName n1 = SectionName.fromString(s1.getName());
                SectionName n2 = SectionName.fromString(s2.getName());
                if (n1 == null) {
                    return n2 == null ? 0 : -1;
                } else if (n2 == null) {
                    return -1;
                } else {
                    return n1.ordinal() - n2.ordinal();
                }
            }
        });

        for (FileSummary.Section s : sections) {
            fin.getChannel().position(s.getOffset());
            InputStream is = FSImageUtil.wrapInputStreamForCompression(conf, summary.getCodec(),
                    new BufferedInputStream(new LimitInputStream(fin, s.getLength())));

            switch (SectionName.fromString(s.getName())) {
            case STRING_TABLE:
                loadStringTable(is);
                break;
            case INODE:
                loadINodeSection(is);
                break;
            case INODE_REFERENCE:
                loadINodeReferenceSection(is);
                break;
            case INODE_DIR:
                loadINodeDirectorySection(is);
                break;
            default:
                break;
            }
        }
        list("", INodeId.ROOT_INODE_ID);
    } finally {
        IOUtils.cleanup(null, fin);
    }
}

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From source file:com.googlecode.osde.internal.jscompiler.ClosureCompiler.java

/**
 * Creates a list of JavaScript files which contains browser-predefined
 * JavaScript object names that should be preserved under optimization.
 *///from  www.  j ava  2 s .com
private JSSourceFile[] createExterns() throws IOException {
    // The externs.zip file is bundled inside the compiler's jar.
    InputStream input = Compiler.class.getResourceAsStream("/externs.zip");
    ZipInputStream zip = new ZipInputStream(input);
    List<JSSourceFile> externs = new ArrayList<JSSourceFile>();
    for (ZipEntry entry; (entry = zip.getNextEntry()) != null;) {
        LimitInputStream entryStream = new LimitInputStream(zip, entry.getSize());
        externs.add(JSSourceFile.fromInputStream(entry.getName(), entryStream));
    }

    return externs.toArray(new JSSourceFile[externs.size()]);
}

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From source file:de.fhg.iais.cortex.rest.resources.BinaryResource.java

private ResponseBuilder createResponseBuilder(final Binary binary, List<String> range, String file,
        List<String> ifRange) throws IOException {
    ByteRange byteRange;/*  w  w  w  .ja v  a2 s .  com*/
    try {
        byteRange = ByteRange.parse(range, binary.getLength());
    } catch (ParseException e) {
        return Response.status(416);
    }
    InputStream content = binary.getContent();

    String actualETag = "\"" + this.hf.newHasher().putString(file).hash().toString() + "\"";
    if (byteRange == null) {
        return Response.ok(content).header("Accept-Ranges", "bytes").header("ETag", actualETag)
                .header("Expires", new Date(System.currentTimeMillis() + this.ONE_YEAR_IN_MS))
                .header("Date", this.dateFormat.format(new Date()))
                .header("Content-Length", binary.getLength());
    }
    String expectedETag = null;
    if ((ifRange != null) && !ifRange.isEmpty()) {
        expectedETag = ifRange.get(0);
    }

    if (expectedETag != null) {
        if (!actualETag.equals(expectedETag)) {
            return Response.status(Status.PRECONDITION_FAILED);
        }
    }

    if (!skipBytes(content, 0)) {
        return Response.status(416);
    }

    LimitInputStream entity = new LimitInputStream(content, binary.getLength());

    return Response.status(206).entity(entity).header("Accept-Ranges", "bytes").header("ETag", actualETag)
            .header("Expires", new Date(System.currentTimeMillis() + this.ONE_YEAR_IN_MS))
            .header("Date", this.dateFormat.format(new Date())).header("Content-Length", binary.getLength())
            .header("Connection", "keep-alive").header("Keep-Alive", "timeout=100 max=1000")
            .header("Content-Range", "bytes " + 0 + "-" + (binary.getLength() - 1) + "/" + binary.getLength());
}

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From source file:com.comphenix.protocol.compat.netty.shaded.ShadedByteBufAdapter.java

@Override
public ByteBuf getBytes(int index, OutputStream dst, int length) throws IOException {
    ByteStreams.copy(new LimitInputStream(input, length), dst);
    return this;
}

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