Example usage for io.netty.buffer Unpooled buffer

List of usage examples for io.netty.buffer Unpooled buffer

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Introduction

In this page you can find the example usage for io.netty.buffer Unpooled buffer.

Prototype

public static ByteBuf buffer()

Source Link

Document

Creates a new big-endian Java heap buffer with reasonably small initial capacity, which expands its capacity boundlessly on demand.

Usage

From source file:com.soho.framework.server.netty.http.HttpServletHandler.java

License:Apache License

private void sendError(ChannelHandlerContext ctx, HttpResponseStatus status) {
    String text = "Failure: " + status.toString() + "\r\n";
    ByteBuf byteBuf = Unpooled.buffer();
    byte[] bytes = null;
    try {/*from   w w w. j  a  v a  2 s.c  om*/
        bytes = text.getBytes("utf-8");
        byteBuf.writeBytes(bytes);
    } catch (UnsupportedEncodingException e) {
    }

    FullHttpResponse response = new DefaultFullHttpResponse(HTTP_1_1, OK, byteBuf);
    HttpHeaders headers = response.headers();

    headers.add(CONTENT_TYPE, "text/plain;charset=utf-8");
    headers.add(CACHE_CONTROL, "no-cache");
    headers.add(PRAGMA, "No-cache");
    headers.add(SERVER, ServerConfig.getServerName());
    headers.add(CONTENT_LENGTH, byteBuf.readableBytes());
    ctx.writeAndFlush(response).addListener(ChannelFutureListener.CLOSE);
}

From source file:com.spotify.ffwd.riemann.RiemannResponder.java

License:Apache License

private ByteBuf ack(boolean ok) throws IOException {
    final Proto.Msg m = Proto.Msg.newBuilder().setOk(ok).build();

    final ByteBuf b = Unpooled.buffer();

    try (final ByteBufOutputStream output = new ByteBufOutputStream(b)) {
        m.writeTo(output);/*  w w  w  .  jav  a  2  s.  c  o  m*/

        final ByteBuf frame = output.buffer();
        final ByteBuf buffer = Unpooled.buffer(4 + frame.readableBytes());

        buffer.writeInt(frame.readableBytes());
        buffer.writeBytes(frame);

        return buffer;
    } finally {
        b.release();
    }
}

From source file:com.spotify.ffwd.riemann.RiemannSerialization.java

License:Apache License

public ByteBuf encodeAll0(Collection<Object> messages) throws IOException {
    final Proto.Msg.Builder builder = Proto.Msg.newBuilder();

    for (final Object d : messages) {
        if (d instanceof Metric) {
            builder.addEvents(encodeMetric0((Metric) d));
        } else if (d instanceof Event) {
            builder.addEvents(encodeEvent0((Event) d));
        }//  w  ww .  java  2  s  .c o m
    }

    final Proto.Msg m = builder.build();

    final ByteBuf work = Unpooled.buffer();

    try (final ByteBufOutputStream output = new ByteBufOutputStream(work)) {
        m.writeTo(output);

        final ByteBuf result = Unpooled.buffer();

        result.writeInt(work.writerIndex());
        result.writeBytes(work);

        return result;
    } finally {
        work.release();
    }
}

From source file:com.spotify.netty.handler.codec.zmtp.ZMTPUtilsTests.java

License:Apache License

@Test
public void frameSizeTest() {
    for (boolean more : asList(TRUE, FALSE)) {
        for (int size = 0; size < 1024; size++) {
            final ZMTPFrame frame = ZMTPFrame.create(new byte[size]);

            int estimatedSize = ZMTPUtils.frameSize(frame, 1);
            final ByteBuf buffer = Unpooled.buffer();
            ZMTPUtils.writeFrame(frame, buffer, more, 1);

            int writtenSize = buffer.readableBytes();
            assertEquals(writtenSize, estimatedSize);
        }// www.j a va  2s .  c om
    }
}

From source file:com.spotify.netty.handler.codec.zmtp.ZMTPUtilsTests.java

License:Apache License

@Test
public void messageSizeTest() {
    final List<ZMTPFrame> EMPTY = new ArrayList<ZMTPFrame>();
    final List<ZMTPFrame> manyFrameSizes = new ArrayList<ZMTPFrame>();
    for (int i = 0; i < 1024; i++) {
        manyFrameSizes.add(ZMTPFrame.create(new byte[i]));
    }/*from  ww w. ja  v a 2s .  co  m*/
    @SuppressWarnings("unchecked")
    final List<List<ZMTPFrame>> frameSets = asList(EMPTY, asList(ZMTPFrame.create("foo")),
            asList(ZMTPFrame.create("foo"), ZMTPFrame.create("bar")), manyFrameSizes);

    for (boolean enveloped : asList(TRUE, FALSE)) {
        for (List<ZMTPFrame> envelope : frameSets) {
            for (List<ZMTPFrame> payload : frameSets) {
                if (payload.isEmpty()) {
                    continue;
                }

                final ZMTPMessage message = new ZMTPMessage(envelope, payload);

                int estimatedSize = ZMTPUtils.messageSize(message, enveloped, 1);
                final ByteBuf buffer = Unpooled.buffer();
                ZMTPUtils.writeMessage(message, buffer, enveloped, 1);

                int writtenSize = buffer.readableBytes();
                assertEquals(writtenSize, estimatedSize);
            }
        }
    }

}

From source file:com.spotify.netty4.handler.codec.zmtp.ZMTPMessageTest.java

License:Apache License

@Test
public void testWriteAndReadTwoMessages() throws ZMTPParsingException {
    final ZMTPMessage m1 = ZMTPMessage.fromUTF8(ALLOC, "hello", "world");
    final ZMTPMessage m2 = ZMTPMessage.fromUTF8(ALLOC, "foo", "bar");
    final ByteBuf buffer = Unpooled.buffer();
    m1.write(buffer, version);/*from   w ww .j  a  v  a 2 s. c  o m*/
    m2.write(buffer, version);
    final ZMTPMessage r1 = ZMTPMessage.read(buffer, version);
    final ZMTPMessage r2 = ZMTPMessage.read(buffer, version);
    assertThat(r1, is(m1));
    assertThat(r2, is(m2));
}

From source file:com.spotify.netty4.handler.codec.zmtp.ZMTPWriterTest.java

License:Apache License

@Test
public void testOneFrame() throws Exception {
    final ZMTPWriter writer = ZMTPWriter.create(ZMTP10);
    final ByteBuf buf = Unpooled.buffer();
    writer.reset(buf);//from ww w . j a v  a  2s .  c  om

    ByteBuf frame = writer.frame(11, false);
    assertThat(frame, is(sameInstance(buf)));

    final ByteBuf content = copiedBuffer("hello world", UTF_8);

    frame.writeBytes(content.duplicate());

    final ZMTPFramingDecoder decoder = new ZMTPFramingDecoder(wireFormat(ZMTP10), new RawDecoder());
    decoder.decode(null, buf, out);

    assertThat(out, hasSize(1));
    assertThat(out, contains((Object) singletonList(content)));
}

From source file:com.spotify.netty4.handler.codec.zmtp.ZMTPWriterTest.java

License:Apache License

@Test
public void testTwoFrames() throws Exception {
    final ZMTPWriter writer = ZMTPWriter.create(ZMTP10);
    final ByteBuf buf = Unpooled.buffer();
    writer.reset(buf);/* ww w.  j  a v a2 s  .c o m*/

    final ByteBuf f0 = copiedBuffer("hello ", UTF_8);
    final ByteBuf f1 = copiedBuffer("hello ", UTF_8);

    writer.frame(f0.readableBytes(), true).writeBytes(f0.duplicate());
    writer.frame(f1.readableBytes(), false).writeBytes(f1.duplicate());

    final ZMTPFramingDecoder decoder = new ZMTPFramingDecoder(wireFormat(ZMTP10), new RawDecoder());
    decoder.decode(null, buf, out);

    assertThat(out, hasSize(1));
    assertThat(out, contains((Object) asList(f0, f1)));
}

From source file:com.spotify.netty4.handler.codec.zmtp.ZMTPWriterTest.java

License:Apache License

@Test
public void testReframe() throws Exception {
    final ZMTPFramingDecoder decoder = new ZMTPFramingDecoder(wireFormat(ZMTP10), new RawDecoder());
    final ZMTPWriter writer = ZMTPWriter.create(ZMTP10);
    final ByteBuf buf = Unpooled.buffer();

    writer.reset(buf);//from   www. j a v a 2  s .  c o m

    // Request a frame with margin in anticipation of a larger payload...
    // ... but write a smaller payload
    final ByteBuf content = copiedBuffer("hello world", UTF_8);
    writer.frame(content.readableBytes() * 2, true).writeBytes(content.duplicate());

    // And rewrite the frame accordingly
    writer.reframe(content.readableBytes(), false);

    // Verify that the message can be parsed
    decoder.decode(null, buf, out);
    assertThat(out, hasSize(1));
    assertThat(out, contains((Object) singletonList(content)));

    // Write and verify another message
    final ByteBuf next = copiedBuffer("next", UTF_8);
    writer.frame(next.readableBytes(), false).writeBytes(next.duplicate());

    out.clear();
    decoder.decode(null, buf, out);
    assertThat(out, hasSize(1));
    assertThat(out, contains((Object) singletonList(next)));
}

From source file:com.streamsets.pipeline.lib.parser.net.netflow.NetflowTestUtil.java

License:Apache License

public static void writeV5NetflowHeader(EmbeddedChannel channel, int count, long uptime, long seconds,
        long nanos, long flowSequence, int engineType, int engineId, int sampling) {
    final int version = 5;

    final ByteBuf buf = Unpooled.buffer();
    buf.writeShort(version);/*from  w  w w . j  av a2 s. c o m*/
    buf.writeShort(count);
    buf.writeInt((int) uptime);
    buf.writeInt((int) seconds);
    buf.writeInt((int) nanos);
    buf.writeInt((int) flowSequence);
    buf.writeByte(engineType);
    buf.writeByte(engineId);
    buf.writeShort(sampling);

    channel.writeInbound(buf);
}