Examples with FilterInputStream java.io.FilterInputStream used on opensource projects

Example 6 with FilterInputStream

use of java.io.FilterInputStream in project intellij-community by JetBrains.

the class TestAnonymousParams method foo.

void foo(InputStream in, int a) throws IOException {
    FilterInputStream filterInputStream = new FilterInputStream(in) {

        @Override
        public int read() throws IOException {
            return a;
        }
    };
    filterInputStream.read();
}

Example 7 with FilterInputStream

use of java.io.FilterInputStream in project voldemort by voldemort.

the class HdfsFetcherAdvancedTest method unGunzipFile.

private void unGunzipFile(String compressedFile, String decompressedFile) {
    byte[] buffer = new byte[1024];
    try {
        FileSystem fs = FileSystem.getLocal(new Configuration());
        FSDataInputStream fileIn = fs.open(new Path(compressedFile));
        FilterInputStream gZIPInputStream = new GZIPInputStream(fileIn);
        FileOutputStream fileOutputStream = new FileOutputStream(decompressedFile);
        int bytes_read;
        while ((bytes_read = gZIPInputStream.read(buffer)) > 0) {
            fileOutputStream.write(buffer, 0, bytes_read);
        }
        gZIPInputStream.close();
        fileOutputStream.close();
    } catch (IOException ex) {
        ex.printStackTrace();
    }
}

Example 8 with FilterInputStream

use of java.io.FilterInputStream in project jackrabbit by apache.

the class DatabaseFileSystem method getInputStream.

/**
     * {@inheritDoc}
     */
public InputStream getInputStream(String filePath) throws FileSystemException {
    if (!initialized) {
        throw new IllegalStateException("not initialized");
    }
    FileSystemPathUtil.checkFormat(filePath);
    String parentDir = FileSystemPathUtil.getParentDir(filePath);
    String name = FileSystemPathUtil.getName(filePath);
    synchronized (selectDataSQL) {
        try {
            final ResultSet rs = conHelper.exec(selectDataSQL, new Object[] { parentDir, name }, false, 0);
            if (!rs.next()) {
                throw new FileSystemException("no such file: " + filePath);
            }
            InputStream in = rs.getBinaryStream(1);
            /**
                 * return an InputStream wrapper in order to
                 * close the ResultSet when the stream is closed
                 */
            return new FilterInputStream(in) {

                public void close() throws IOException {
                    super.close();
                    // close ResultSet
                    DbUtility.close(rs);
                }
            };
        } catch (SQLException e) {
            String msg = "failed to retrieve data of file: " + filePath;
            log.error(msg, e);
            throw new FileSystemException(msg, e);
        }
    }
}

Example 9 with FilterInputStream

use of java.io.FilterInputStream in project jackrabbit-oak by apache.

the class StatsCollectingStreams method wrap.

public static InputStream wrap(final BlobStatsCollector collector, final String blobId, InputStream in) {
    final CountingInputStream cin = new CountingInputStream(in);
    return new FilterInputStream(cin) {

        final long startTime = System.nanoTime();

        @Override
        public void close() throws IOException {
            super.close();
            //We rely on close to determine how much was downloaded
            //as once an InputStream is exposed its not possible to
            //determine if the stream is actually used
            //Download time might not be accurate as reading code might
            //be processing also as it moved further in stream. So that
            //overhead would add to the download time
            collector.downloaded(blobId, System.nanoTime() - startTime, TimeUnit.NANOSECONDS, cin.getCount());
            collector.downloadCompleted(blobId);
        }
    };
}

Example 10 with FilterInputStream

use of java.io.FilterInputStream in project jackrabbit-oak by apache.

the class IOUtilsTest method testReadFully.

public void testReadFully() throws IOException {
    final Random r = new Random(1);
    byte[] data = new byte[1000];
    final AtomicInteger readCount = new AtomicInteger();
    r.nextBytes(data);
    FilterInputStream in = new FilterInputStream(new ByteArrayInputStream(data)) {

        @Override
        public int read(byte[] buffer, int off, int max) throws IOException {
            readCount.incrementAndGet();
            if (r.nextInt(10) == 0) {
                return 0;
            }
            return in.read(buffer, off, Math.min(10, max));
        }
    };
    in.mark(10000);
    byte[] test = new byte[1000];
    // readFully is not supposed to call read when reading 0 bytes
    assertEquals(0, IOUtils.readFully(in, test, 0, 0));
    assertEquals(0, readCount.get());
    assertEquals(1000, IOUtils.readFully(in, test, 0, 1000));
    IOUtilsTest.assertEquals(data, test);
    test = new byte[1001];
    in.reset();
    in.mark(10000);
    assertEquals(1000, IOUtils.readFully(in, test, 0, 1001));
    assertEquals(0, IOUtils.readFully(in, test, 0, 0));
}