Examples with ReadableByteChannel java.nio.channels.ReadableByteChannel used on opensource projects

Example 1 with ReadableByteChannel

use of java.nio.channels.ReadableByteChannel in project jetty.project by eclipse.

the class HttpOutputTest method testSendChannelBigChunked.

@Test
public void testSendChannelBigChunked() throws Exception {
    Resource big = Resource.newClassPathResource("simple/big.txt");
    final ReadableByteChannel channel = big.getReadableByteChannel();
    _handler._contentChannel = new ReadableByteChannel() {

        @Override
        public boolean isOpen() {
            return channel.isOpen();
        }

        @Override
        public void close() throws IOException {
            channel.close();
        }

        @Override
        public int read(ByteBuffer dst) throws IOException {
            int filled = 0;
            if (dst.position() == 0 && dst.limit() > 2000) {
                int limit = dst.limit();
                dst.limit(2000);
                filled = channel.read(dst);
                dst.limit(limit);
            } else
                filled = channel.read(dst);
            return filled;
        }
    };
    LocalEndPoint endp = _connector.executeRequest("GET / HTTP/1.1\nHost: localhost:80\n\n" + "GET / HTTP/1.1\nHost: localhost:80\nConnection: close\n\n");
    String response = endp.getResponse();
    assertThat(response, containsString("HTTP/1.1 200 OK"));
    assertThat(response, containsString("Transfer-Encoding: chunked"));
    assertThat(response, containsString("1\tThis is a big file"));
    assertThat(response, containsString("400\tThis is a big file"));
    assertThat(response, containsString("\r\n0\r\n"));
    response = endp.getResponse();
    assertThat(response, containsString("HTTP/1.1 200 OK"));
    assertThat(response, containsString("Connection: close"));
}

Example 2 with ReadableByteChannel

use of java.nio.channels.ReadableByteChannel in project deeplearning4j by deeplearning4j.

the class DoubleArrayTrie method read.

/**
     * Load Stored data
     *
     * @param input  input stream to read the double array trie from
     * @return double array trie, not null
     * @throws IOException if an IO error occured during reading the double array trie
     */
public static DoubleArrayTrie read(InputStream input) throws IOException {
    DoubleArrayTrie trie = new DoubleArrayTrie();
    DataInputStream dis = new DataInputStream(new BufferedInputStream(input));
    trie.compact = dis.readBoolean();
    // Read size of baseArr and checkArr
    int baseCheckSize = dis.readInt();
    // Read size of tailArr
    int tailSize = dis.readInt();
    ReadableByteChannel channel = Channels.newChannel(dis);
    ByteBuffer tmpBaseBuffer = ByteBuffer.allocate(baseCheckSize * 4);
    channel.read(tmpBaseBuffer);
    tmpBaseBuffer.rewind();
    trie.baseBuffer = tmpBaseBuffer.asIntBuffer();
    ByteBuffer tmpCheckBuffer = ByteBuffer.allocate(baseCheckSize * 4);
    channel.read(tmpCheckBuffer);
    tmpCheckBuffer.rewind();
    trie.checkBuffer = tmpCheckBuffer.asIntBuffer();
    ByteBuffer tmpTailBuffer = ByteBuffer.allocate(tailSize * 2);
    channel.read(tmpTailBuffer);
    tmpTailBuffer.rewind();
    trie.tailBuffer = tmpTailBuffer.asCharBuffer();
    input.close();
    return trie;
}

Example 3 with ReadableByteChannel

use of java.nio.channels.ReadableByteChannel in project deeplearning4j by deeplearning4j.

the class ByteBufferIO method read.

public static ByteBuffer read(InputStream input) throws IOException {
    DataInputStream dataInput = new DataInputStream(new BufferedInputStream(input));
    int size = dataInput.readInt();
    ByteBuffer buffer = ByteBuffer.allocate(size);
    ReadableByteChannel channel = Channels.newChannel(dataInput);
    channel.read(buffer);
    buffer.rewind();
    return buffer;
}

Example 4 with ReadableByteChannel

use of java.nio.channels.ReadableByteChannel in project neo4j by neo4j.

the class PageCacheTest method readableByteChannelMustReadAllBytesInFile.

@Test(timeout = SHORT_TIMEOUT_MILLIS)
public void readableByteChannelMustReadAllBytesInFile() throws Exception {
    File file = file("a");
    generateFileWithRecords(file, recordCount, recordSize);
    configureStandardPageCache();
    try (PagedFile pf = pageCache.map(file, filePageSize);
        ReadableByteChannel channel = pf.openReadableByteChannel()) {
        verifyRecordsInFile(channel, recordCount);
    }
}

Example 5 with ReadableByteChannel

use of java.nio.channels.ReadableByteChannel in project neo4j by neo4j.

the class PageCacheTest method readableByteChannelMustBeOpenUntilClosed.

@Test(timeout = SHORT_TIMEOUT_MILLIS)
public void readableByteChannelMustBeOpenUntilClosed() throws Exception {
    configureStandardPageCache();
    try (PagedFile pf = pageCache.map(file("a"), filePageSize)) {
        ReadableByteChannel channel;
        try (ReadableByteChannel ch = pf.openReadableByteChannel()) {
            assertTrue(ch.isOpen());
            channel = ch;
        }
        assertFalse(channel.isOpen());
    }
}