Example usage for io.netty.channel ChannelHandlerContext pipeline

Introduction

In this page you can find the example usage for io.netty.channel ChannelHandlerContext pipeline.

Prototype

ChannelPipeline pipeline();

Source Link

Document

Return the assigned ChannelPipeline

Usage

From source file:io.gatling.http.client.impl.DigestAuthHandler.java

License:Apache License

@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {

    if (digestHeader == null) {
        // initial state
        if (msg instanceof HttpResponse) {
            HttpResponse response = (HttpResponse) msg;
            if (response.status() == HttpResponseStatus.UNAUTHORIZED) {
                String authenticateHeader = getHeaderWithPrefix(response.headers().getAll(WWW_AUTHENTICATE),
                        "Digest");
                if (authenticateHeader != null) {
                    digestHeader = realm.computeAuthorizationHeader(tx.request.getMethod(), tx.request.getUri(),
                            authenticateHeader);
                    return;
                }/*from  w  w w .  jav  a  2s.  c o m*/
            }
        }

        // nothing this handler can do about it
        // either we don't need authentication, or auth scheme is not Digest
        ctx.fireChannelRead(msg);

    } else if (msg instanceof LastHttpContent) {
        // send new request
        // FIXME make sure connection can be reused, otherwise use a new one
        // FIXME check what happens if buildRequest throws
        WritableRequest request = WritableRequestBuilder.buildRequest(tx.request, ctx.alloc(), config, false);
        request.getRequest().headers().add(AUTHORIZATION, digestHeader);

        // FIXME write can throw Exception!!!
        request.write(ctx);
        ctx.pipeline().remove(this);
    }
    // initial response chunks are just ignored
}

---

From source file:io.grpc.alts.internal.TsiHandshakeHandler.java

License:Apache License

@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) throws Exception {
    // Process the data. If we need to send more data, do so now.
    if (handshaker.processBytesFromPeer(in) && handshaker.isInProgress()) {
        sendHandshake(ctx);//from  w  ww .  j a v  a2s.co  m
    }

    // If the handshake is complete, transition to the framing state.
    if (!handshaker.isInProgress()) {
        TsiPeer peer = handshaker.extractPeer();
        Object authContext = handshaker.extractPeerObject();
        SecurityDetails details = handshakeValidator.validatePeerObject(authContext);
        // createFrameProtector must be called last.
        TsiFrameProtector protector = handshaker.createFrameProtector(ctx.alloc());
        TsiFrameHandler framer;
        boolean success = false;
        try {
            framer = new TsiFrameHandler(protector);
            // adding framer and next handler after this handler before removing Decoder (current
            // handler). This will prevents any missing read from decoder and/or unframed write from
            // next handler.
            ctx.pipeline().addAfter(ctx.name(), null, framer);
            ctx.pipeline().addAfter(ctx.pipeline().context(framer).name(), null, next);
            ctx.pipeline().remove(ctx.name());
            fireProtocolNegotiationEvent(ctx, peer, authContext, details);
            success = true;
        } finally {
            if (!success && protector != null) {
                protector.destroy();
            }
        }
    }
}

---

From source file:io.grpc.netty.ProtocolNegotiators.java

License:Apache License

@VisibleForTesting
static void logSslEngineDetails(Level level, ChannelHandlerContext ctx, String msg, @Nullable Throwable t) {
    if (!log.isLoggable(level)) {
        return;// w  w  w . jav  a2  s.  c  o m
    }

    SslHandler sslHandler = ctx.pipeline().get(SslHandler.class);
    SSLEngine engine = sslHandler.engine();

    StringBuilder builder = new StringBuilder(msg);
    builder.append("\nSSLEngine Details: [\n");
    if (engine instanceof OpenSslEngine) {
        builder.append("    OpenSSL, ");
        builder.append("Version: 0x").append(Integer.toHexString(OpenSsl.version()));
        builder.append(" (").append(OpenSsl.versionString()).append("), ");
        builder.append("ALPN supported: ").append(OpenSsl.isAlpnSupported());
    } else if (JettyTlsUtil.isJettyAlpnConfigured()) {
        builder.append("    Jetty ALPN");
    } else if (JettyTlsUtil.isJettyNpnConfigured()) {
        builder.append("    Jetty NPN");
    } else if (JettyTlsUtil.isJava9AlpnAvailable()) {
        builder.append("    JDK9 ALPN");
    }
    builder.append("\n    TLS Protocol: ");
    builder.append(engine.getSession().getProtocol());
    builder.append("\n    Application Protocol: ");
    builder.append(sslHandler.applicationProtocol());
    builder.append("\n    Need Client Auth: ");
    builder.append(engine.getNeedClientAuth());
    builder.append("\n    Want Client Auth: ");
    builder.append(engine.getWantClientAuth());
    builder.append("\n    Supported protocols=");
    builder.append(Arrays.toString(engine.getSupportedProtocols()));
    builder.append("\n    Enabled protocols=");
    builder.append(Arrays.toString(engine.getEnabledProtocols()));
    builder.append("\n    Supported ciphers=");
    builder.append(Arrays.toString(engine.getSupportedCipherSuites()));
    builder.append("\n    Enabled ciphers=");
    builder.append(Arrays.toString(engine.getEnabledCipherSuites()));
    builder.append("\n]");

    log.log(level, builder.toString(), t);
}

---

From source file:io.grpc.netty.ProtocolNegotiatorsTest.java

License:Apache License

@Test
public void waitUntilActiveHandler_handlerAdded() throws Exception {
    final CountDownLatch latch = new CountDownLatch(1);

    final WaitUntilActiveHandler handler = new WaitUntilActiveHandler(new ChannelHandlerAdapter() {
        @Override//w w w.ja v a2  s. c o  m
        public void handlerAdded(ChannelHandlerContext ctx) throws Exception {
            assertTrue(ctx.channel().isActive());
            latch.countDown();
            super.handlerAdded(ctx);
        }
    });

    ChannelHandler lateAddingHandler = new ChannelInboundHandlerAdapter() {
        @Override
        public void channelActive(ChannelHandlerContext ctx) throws Exception {
            ctx.pipeline().addLast(handler);
            ctx.pipeline().fireUserEventTriggered(ProtocolNegotiationEvent.DEFAULT);
            // do not propagate channelActive().
        }
    };

    LocalAddress addr = new LocalAddress("local");
    ChannelFuture cf = new Bootstrap().channel(LocalChannel.class).handler(lateAddingHandler).group(group)
            .register();
    chan = cf.channel();
    ChannelFuture sf = new ServerBootstrap().channel(LocalServerChannel.class)
            .childHandler(new ChannelHandlerAdapter() {
            }).group(group).bind(addr);
    server = sf.channel();
    sf.sync();

    assertEquals(1, latch.getCount());

    chan.connect(addr).sync();
    assertTrue(latch.await(TIMEOUT_SECONDS, TimeUnit.SECONDS));
    assertNull(chan.pipeline().context(WaitUntilActiveHandler.class));
}

---

From source file:io.grpc.netty.WriteBufferingAndExceptionHandler.java

License:Apache License

@Override
public void handlerAdded(ChannelHandlerContext ctx) throws Exception {
    ctx.pipeline().addBefore(ctx.name(), null, next);
    super.handlerAdded(ctx);
    // kick off protocol negotiation.
    ctx.pipeline().fireUserEventTriggered(ProtocolNegotiationEvent.DEFAULT);
}

---

From source file:io.grpc.netty.WriteBufferingAndExceptionHandler.java

License:Apache License

/**
 * If this channel becomes inactive, then notify all buffered writes that we failed.
 *///w w  w  .ja v  a  2s .  c o  m
@Override
public void channelInactive(ChannelHandlerContext ctx) {
    Status status = Status.UNAVAILABLE.withDescription(
            "Connection closed while performing protocol negotiation for " + ctx.pipeline().names());
    failWrites(status.asRuntimeException());
}

---

From source file:io.grpc.netty.WriteBufferingAndExceptionHandler.java

License:Apache License

@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
    assert cause != null;
    Throwable previousFailure = failCause;
    Status status = Utils.statusFromThrowable(cause)
            .augmentDescription("Channel Pipeline: " + ctx.pipeline().names());
    failWrites(status.asRuntimeException());
    // Check to see if the channel is active and this is the first failure.  If a downstream
    // handler triggers an exception in close(), avoid being reentrant.  This is not obviously
    // correct, so here are the cases and how they are correctly handled:
    // 1. !active, prev==null: the channel is inactive, no-op
    // 2. !active, prev!=null: the channel is inactive, no-op
    // 3.  active, prev==null: this is the first error, close
    // 4a. active, prev!=null[channelInactive]: impossible, no-op
    // 4b. active, prev!=null[close]: close() cannot succeed, no point in calling ctx.close().
    // 4c. active, prev!=null[handlerRemoved]: channel will be closed out-of-band by buffered write.
    // 4d. active, prev!=null[connect]: impossible, channel can't be active after a failed connect.
    if (ctx.channel().isActive() && previousFailure == null) {
        final class LogOnFailure implements ChannelFutureListener {
            @Override// ww  w .ja  va2s.c  o m
            public void operationComplete(ChannelFuture future) {
                if (!future.isSuccess()) {
                    logger.log(Level.FINE, "Failed closing channel", future.cause());
                }
            }
        }

        ctx.close().addListener(new LogOnFailure());
    }
}

---

From source file:io.grpc.netty.WriteBufferingAndExceptionHandler.java

License:Apache License

@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) {
    try {//from  w  w w . j a  va  2  s. c  o m
        if (logger.isLoggable(Level.FINE)) {
            Object loggedMsg = msg instanceof ByteBuf ? ByteBufUtil.hexDump((ByteBuf) msg) : msg;
            logger.log(Level.FINE, "Unexpected channelRead()->{0} reached end of pipeline {1}",
                    new Object[] { loggedMsg, ctx.pipeline().names() });
        }
        exceptionCaught(ctx,
                Status.INTERNAL.withDescription("channelRead() missed by ProtocolNegotiator handler: " + msg)
                        .asRuntimeException());
    } finally {
        ReferenceCountUtil.safeRelease(msg);
    }
}

---

From source file:io.grpc.netty.WriteBufferingAndExceptionHandler.java

License:Apache License

/**
 * If we are still performing protocol negotiation, then this will propagate failures to all
 * buffered writes.//from w ww  .j a v  a  2 s. c  om
 */
@Override
public void close(ChannelHandlerContext ctx, ChannelPromise future) throws Exception {
    Status status = Status.UNAVAILABLE.withDescription(
            "Connection closing while performing protocol negotiation for " + ctx.pipeline().names());
    failWrites(status.asRuntimeException());
    super.close(ctx, future);
}

---

From source file:io.grpc.netty.WriteBufferingAndExceptionHandler.java

License:Apache License

@SuppressWarnings("FutureReturnValueIgnored")
final void writeBufferedAndRemove(ChannelHandlerContext ctx) {
    // TODO(carl-mastrangelo): remove the isActive check and just fail if not yet ready.
    if (!ctx.channel().isActive() || writing) {
        return;/* w  ww . ja  v  a  2  s  . c om*/
    }
    // Make sure that method can't be reentered, so that the ordering
    // in the queue can't be messed up.
    writing = true;
    while (!bufferedWrites.isEmpty()) {
        ChannelWrite write = bufferedWrites.poll();
        ctx.write(write.msg, write.promise);
    }
    if (flushRequested) {
        ctx.flush();
    }
    // Removal has to happen last as the above writes will likely trigger
    // new writes that have to be added to the end of queue in order to not
    // mess up the ordering.
    ctx.pipeline().remove(this);
}

---

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