*/
package org.opendaylight.protocol.bgp.rib.impl;
-import io.netty.channel.EventLoopGroup;
+import static java.util.Objects.requireNonNull;
+
+import com.google.common.annotations.VisibleForTesting;
+import io.netty.bootstrap.Bootstrap;
+import io.netty.bootstrap.ServerBootstrap;
+import io.netty.buffer.PooledByteBufAllocator;
+import io.netty.channel.AdaptiveRecvByteBufAllocator;
+import io.netty.channel.ChannelFuture;
+import io.netty.channel.ChannelHandler;
+import io.netty.channel.ChannelInitializer;
+import io.netty.channel.ChannelOption;
+import io.netty.channel.RecvByteBufAllocator;
+import io.netty.channel.WriteBufferWaterMark;
import io.netty.channel.socket.SocketChannel;
-import io.netty.util.HashedWheelTimer;
-import io.netty.util.Timer;
+import io.netty.util.concurrent.DefaultPromise;
import io.netty.util.concurrent.Future;
+import io.netty.util.concurrent.GlobalEventExecutor;
import io.netty.util.concurrent.Promise;
-import org.opendaylight.protocol.bgp.parser.BGPMessageFactory;
-import org.opendaylight.protocol.bgp.parser.BGPSessionListener;
-import org.opendaylight.protocol.bgp.rib.impl.spi.BGPDispatcher;
-import org.opendaylight.protocol.bgp.rib.impl.spi.BGPSessionPreferences;
-import org.opendaylight.protocol.framework.AbstractDispatcher;
-import org.opendaylight.protocol.framework.ReconnectStrategy;
-import org.opendaylight.protocol.framework.SessionListenerFactory;
-
import java.net.InetSocketAddress;
+import javax.inject.Inject;
+import javax.inject.Singleton;
+import org.opendaylight.protocol.bgp.parser.spi.BGPExtensionConsumerContext;
+import org.opendaylight.protocol.bgp.rib.impl.protocol.BGPProtocolSessionPromise;
+import org.opendaylight.protocol.bgp.rib.impl.protocol.BGPReconnectPromise;
+import org.opendaylight.protocol.bgp.rib.impl.spi.BGPDispatcher;
+import org.opendaylight.protocol.bgp.rib.impl.spi.BGPPeerRegistry;
+import org.opendaylight.protocol.bgp.rib.impl.spi.ChannelPipelineInitializer;
+import org.opendaylight.protocol.bgp.rib.spi.BGPSession;
+import org.opendaylight.protocol.bgp.rib.spi.BGPSessionNegotiatorFactory;
+import org.opendaylight.protocol.concepts.KeyMapping;
+import org.osgi.service.component.annotations.Activate;
+import org.osgi.service.component.annotations.Component;
+import org.osgi.service.component.annotations.Reference;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
/**
* Implementation of BGPDispatcher.
*/
-public final class BGPDispatcherImpl extends AbstractDispatcher<BGPSessionImpl, BGPSessionListener> implements BGPDispatcher, AutoCloseable {
- private final Timer timer = new HashedWheelTimer();
-
- private final BGPHandlerFactory hf;
-
- public BGPDispatcherImpl(final BGPMessageFactory parser, EventLoopGroup bossGroup, EventLoopGroup workerGroup) {
- super(bossGroup, workerGroup);
- this.hf = new BGPHandlerFactory(parser);
- }
-
- @Override
- public Future<BGPSessionImpl> createClient(final InetSocketAddress address, final BGPSessionPreferences preferences,
- final BGPSessionListener listener, final ReconnectStrategy strategy) {
- final BGPSessionNegotiatorFactory snf = new BGPSessionNegotiatorFactory(this.timer, preferences);
- final SessionListenerFactory<BGPSessionListener> slf = new SessionListenerFactory<BGPSessionListener>() {
- @Override
- public BGPSessionListener getSessionListener() {
- return listener;
- }
- };
- return super.createClient(address, strategy, new PipelineInitializer<BGPSessionImpl>() {
- @Override
- public void initializeChannel(final SocketChannel ch, final Promise<BGPSessionImpl> promise) {
- ch.pipeline().addLast(hf.getDecoders());
- ch.pipeline().addLast("negotiator", snf.getSessionNegotiator(slf, ch, promise));
- ch.pipeline().addLast(hf.getEncoders());
- }
- });
- }
-
- @Override
- public void close() {
- }
-}
+@Singleton
+@Component(immediate = true)
+public final class BGPDispatcherImpl implements BGPDispatcher {
+ private static final Logger LOG = LoggerFactory.getLogger(BGPDispatcherImpl.class);
+ private static final int SOCKET_BACKLOG_SIZE = 128;
+
+ private static final WriteBufferWaterMark WATER_MARK = new WriteBufferWaterMark(128 * 1024, 256 * 1024);
+
+ // An adaptive allocator, so we size our message buffers based on what we receive, but make sure we process one
+ // message at a time. This should be good enough for most cases, although we could optimize it a bit based on
+ // whether we actually negotiate use of large messages -- based on that the range of allocations can be constrained
+ // from the default 64-65536 range to 64-4096.
+ private static final RecvByteBufAllocator RECV_ALLOCATOR = new AdaptiveRecvByteBufAllocator().maxMessagesPerRead(1);
+
+ private final BGPHandlerFactory handlerFactory;
+ private final BGPPeerRegistry bgpPeerRegistry;
+ private final BGPNettyGroups nettyGroups;
+
+ @Inject
+ @Activate
+ public BGPDispatcherImpl(@Reference final BGPExtensionConsumerContext extensions,
+ @Reference final BGPNettyGroups nettyGroups, @Reference final BGPPeerRegistry bgpPeerRegistry) {
+ this.nettyGroups = requireNonNull(nettyGroups);
+ this.bgpPeerRegistry = requireNonNull(bgpPeerRegistry);
+ handlerFactory = new BGPHandlerFactory(extensions.getMessageRegistry());
+ }
+
+ @VisibleForTesting
+ public synchronized Future<BGPSessionImpl> createClient(final InetSocketAddress localAddress,
+ final InetSocketAddress remoteAddress, final int retryTimer, final boolean reuseAddress) {
+ final Bootstrap clientBootStrap = createClientBootStrap(KeyMapping.of(), reuseAddress, localAddress);
+ final BGPClientSessionNegotiatorFactory snf = new BGPClientSessionNegotiatorFactory(bgpPeerRegistry);
+ final ChannelPipelineInitializer<BGPSessionImpl> initializer = BGPChannel.createChannelPipelineInitializer(
+ handlerFactory, snf);
+
+ final BGPProtocolSessionPromise<BGPSessionImpl> sessionPromise = new BGPProtocolSessionPromise<>(remoteAddress,
+ retryTimer, clientBootStrap, bgpPeerRegistry);
+ clientBootStrap.handler(BGPChannel.createClientChannelHandler(initializer, sessionPromise));
+ sessionPromise.connect();
+ LOG.debug("Client created.");
+ return sessionPromise;
+ }
+
+ private synchronized Bootstrap createClientBootStrap(final KeyMapping keys, final boolean reuseAddress,
+ final InetSocketAddress localAddress) {
+ return nettyGroups.createBootstrap(keys)
+ // Make sure we are doing round-robin processing
+ .option(ChannelOption.RCVBUF_ALLOCATOR, RECV_ALLOCATOR)
+ .option(ChannelOption.SO_KEEPALIVE, Boolean.TRUE)
+ .option(ChannelOption.WRITE_BUFFER_WATER_MARK, WATER_MARK)
+ .option(ChannelOption.SO_REUSEADDR, reuseAddress)
+ .localAddress(localAddress);
+ }
+
+ @Override
+ public synchronized Future<Void> createReconnectingClient(final InetSocketAddress remoteAddress,
+ final InetSocketAddress localAddress, final int retryTimer, final KeyMapping keys) {
+ return createReconnectingClient(remoteAddress, retryTimer, keys, localAddress, false);
+ }
+
+ @VisibleForTesting
+ synchronized Future<Void> createReconnectingClient(final InetSocketAddress remoteAddress,
+ final int retryTimer, final KeyMapping keys, final InetSocketAddress localAddress,
+ final boolean reuseAddress) {
+ final BGPClientSessionNegotiatorFactory snf = new BGPClientSessionNegotiatorFactory(bgpPeerRegistry);
+ final Bootstrap bootstrap = createClientBootStrap(keys, reuseAddress, localAddress);
+ final BGPReconnectPromise<?> reconnectPromise = new BGPReconnectPromise<>(GlobalEventExecutor.INSTANCE,
+ remoteAddress, retryTimer, bootstrap, bgpPeerRegistry,
+ BGPChannel.createChannelPipelineInitializer(handlerFactory, snf));
+ reconnectPromise.connect();
+ return reconnectPromise;
+ }
+
+ @Override
+ public synchronized ChannelFuture createServer(final InetSocketAddress serverAddress) {
+ final BGPServerSessionNegotiatorFactory snf = new BGPServerSessionNegotiatorFactory(bgpPeerRegistry);
+ final ChannelPipelineInitializer<?> initializer = BGPChannel.createChannelPipelineInitializer(
+ handlerFactory, snf);
+ final ServerBootstrap serverBootstrap = createServerBootstrap(initializer);
+ final ChannelFuture channelFuture = serverBootstrap.bind(serverAddress);
+ LOG.debug("Initiated server {} at {}.", channelFuture, serverAddress);
+ return channelFuture;
+ }
+
+ @Override
+ public BGPPeerRegistry getBGPPeerRegistry() {
+ return bgpPeerRegistry;
+ }
+
+ private synchronized ServerBootstrap createServerBootstrap(final ChannelPipelineInitializer<?> initializer) {
+ return nettyGroups.createServerBootstrap()
+ .childHandler(BGPChannel.createServerChannelHandler(initializer))
+ .option(ChannelOption.SO_BACKLOG, SOCKET_BACKLOG_SIZE)
+ .childOption(ChannelOption.ALLOCATOR, PooledByteBufAllocator.DEFAULT)
+ .childOption(ChannelOption.WRITE_BUFFER_WATER_MARK, WATER_MARK)
+ // Make sure we are doing round-robin processing
+ .option(ChannelOption.RCVBUF_ALLOCATOR, RECV_ALLOCATOR);
+ }
+
+ private static final class BGPChannel {
+ private static final String NEGOTIATOR = "negotiator";
+
+ private BGPChannel() {
+
+ }
+
+ static <S extends BGPSession, T extends BGPSessionNegotiatorFactory<S>> ChannelPipelineInitializer<S>
+ createChannelPipelineInitializer(final BGPHandlerFactory hf, final T snf) {
+ return (channel, promise) -> {
+ channel.pipeline().addLast(hf.getDecoders());
+ channel.pipeline().addLast(NEGOTIATOR, snf.getSessionNegotiator(channel, promise));
+ channel.pipeline().addLast(hf.getEncoders());
+ };
+ }
+
+ static <S extends BGPSession> ChannelHandler createClientChannelHandler(
+ final ChannelPipelineInitializer<S> initializer, final Promise<S> promise) {
+ return new ChannelInitializer<SocketChannel>() {
+ @Override
+ protected void initChannel(final SocketChannel channel) {
+ initializer.initializeChannel(channel, promise);
+ }
+ };
+ }
+
+ static <S extends BGPSession> ChannelHandler createServerChannelHandler(
+ final ChannelPipelineInitializer<S> initializer) {
+ return new ChannelInitializer<SocketChannel>() {
+ @Override
+ protected void initChannel(final SocketChannel channel) {
+ initializer.initializeChannel(channel, new DefaultPromise<>(GlobalEventExecutor.INSTANCE));
+ }
+ };
+ }
+ }
+}
\ No newline at end of file
Code Review / bgpcep.git / blobdiff