*/
package org.opendaylight.protocol.bgp.rib.impl;
-import java.io.Closeable;
-import java.io.IOException;
-
-import org.opendaylight.protocol.bgp.parser.BGPMessageParser;
-import org.opendaylight.protocol.bgp.parser.BGPSession;
-import org.opendaylight.protocol.bgp.rib.impl.spi.BGPConnection;
+import com.google.common.annotations.VisibleForTesting;
+import com.google.common.base.Optional;
+import com.google.common.base.Preconditions;
+import io.netty.bootstrap.Bootstrap;
+import io.netty.bootstrap.ServerBootstrap;
+import io.netty.buffer.PooledByteBufAllocator;
+import io.netty.channel.ChannelFuture;
+import io.netty.channel.ChannelHandler;
+import io.netty.channel.ChannelInitializer;
+import io.netty.channel.ChannelOption;
+import io.netty.channel.EventLoopGroup;
+import io.netty.channel.epoll.Epoll;
+import io.netty.channel.epoll.EpollChannelOption;
+import io.netty.channel.epoll.EpollEventLoopGroup;
+import io.netty.channel.epoll.EpollMode;
+import io.netty.channel.epoll.EpollServerSocketChannel;
+import io.netty.channel.epoll.EpollSocketChannel;
+import io.netty.channel.socket.SocketChannel;
+import io.netty.channel.socket.nio.NioServerSocketChannel;
+import io.netty.channel.socket.nio.NioSocketChannel;
+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 java.net.InetSocketAddress;
+import java.util.concurrent.TimeUnit;
+import org.opendaylight.protocol.bgp.parser.spi.MessageRegistry;
+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.framework.Dispatcher;
+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.slf4j.Logger;
+import org.slf4j.LoggerFactory;
/**
* Implementation of BGPDispatcher.
*/
-public final class BGPDispatcherImpl implements BGPDispatcher, Closeable {
+public class BGPDispatcherImpl implements BGPDispatcher, AutoCloseable {
+ private static final Logger LOG = LoggerFactory.getLogger(BGPDispatcherImpl.class);
+ private static final int SOCKET_BACKLOG_SIZE = 128;
+ private static final int HIGH_WATER_MARK = 256 * 1024;
+ private static final int LOW_WATER_MARK = 128 * 1024;
+ private static final long TIMEOUT = 10;
+
+ private final BGPHandlerFactory handlerFactory;
+ private final EventLoopGroup bossGroup;
+ private final EventLoopGroup workerGroup;
+
+ public BGPDispatcherImpl(final MessageRegistry messageRegistry, final EventLoopGroup bossGroup, final EventLoopGroup workerGroup) {
+ if (Epoll.isAvailable()) {
+ this.bossGroup = new EpollEventLoopGroup();
+ this.workerGroup = new EpollEventLoopGroup();
+ } else {
+ this.bossGroup = Preconditions.checkNotNull(bossGroup);
+ this.workerGroup = Preconditions.checkNotNull(workerGroup);
+ }
+ this.handlerFactory = new BGPHandlerFactory(messageRegistry);
+ }
+
+ @Override
+ public synchronized Future<BGPSessionImpl> createClient(final InetSocketAddress remoteAddress, final BGPPeerRegistry listener, final int retryTimer) {
+ return createClient(remoteAddress, listener, retryTimer, createClientBootStrap(Optional.absent(), false));
+ }
+
+ private synchronized Future<BGPSessionImpl> createClient(final InetSocketAddress remoteAddress, final BGPPeerRegistry listener, final int retryTimer,
+ final Bootstrap clientBootStrap) {
+ final BGPClientSessionNegotiatorFactory snf = new BGPClientSessionNegotiatorFactory(listener);
+ final ChannelPipelineInitializer initializer = BGPChannel.createChannelPipelineInitializer(this.handlerFactory, snf);
+
+ final BGPProtocolSessionPromise sessionPromise = new BGPProtocolSessionPromise(remoteAddress, retryTimer, clientBootStrap, listener);
+ clientBootStrap.handler(BGPChannel.createClientChannelHandler(initializer, sessionPromise));
+ sessionPromise.connect();
+ LOG.debug("Client created.");
+ return sessionPromise;
+ }
+
+ @VisibleForTesting
+ public synchronized Future<BGPSessionImpl> createClient(final InetSocketAddress localAddress, final InetSocketAddress remoteAddress,
+ final BGPPeerRegistry strictBGPPeerRegistry, final int retryTimer, final boolean reuseAddress) {
+ final Bootstrap clientBootStrap = createClientBootStrap(Optional.absent(), reuseAddress);
+ clientBootStrap.localAddress(localAddress);
+ return createClient(remoteAddress, strictBGPPeerRegistry, retryTimer, clientBootStrap);
+ }
+
+ private synchronized Bootstrap createClientBootStrap(final Optional<KeyMapping> keys, final boolean reuseAddress) {
+ final Bootstrap bootstrap = new Bootstrap();
+ if (Epoll.isAvailable()) {
+ bootstrap.channel(EpollSocketChannel.class);
+ bootstrap.option(EpollChannelOption.EPOLL_MODE, EpollMode.LEVEL_TRIGGERED);
+ } else {
+ bootstrap.channel(NioSocketChannel.class);
+ }
+ if (keys.isPresent()) {
+ if (Epoll.isAvailable()) {
+ bootstrap.option(EpollChannelOption.TCP_MD5SIG, keys.get());
+ } else {
+ throw new UnsupportedOperationException(Epoll.unavailabilityCause().getCause());
+ }
+ }
+
+ // Make sure we are doing round-robin processing
+ bootstrap.option(ChannelOption.MAX_MESSAGES_PER_READ, 1);
+ bootstrap.option(ChannelOption.SO_KEEPALIVE, Boolean.TRUE);
+ bootstrap.option(ChannelOption.WRITE_BUFFER_HIGH_WATER_MARK, HIGH_WATER_MARK);
+ bootstrap.option(ChannelOption.WRITE_BUFFER_LOW_WATER_MARK, LOW_WATER_MARK);
+ bootstrap.option(ChannelOption.SO_REUSEADDR, reuseAddress);
+
+ if (bootstrap.group() == null) {
+ bootstrap.group(this.workerGroup);
+ }
+
+ return bootstrap;
+ }
+
+ @Override
+ public synchronized void close() throws InterruptedException {
+ if (Epoll.isAvailable()) {
+ LOG.debug("Closing Dispatcher");
+ this.workerGroup.shutdownGracefully(0, TIMEOUT, TimeUnit.SECONDS);
+ this.bossGroup.shutdownGracefully(0, TIMEOUT, TimeUnit.SECONDS);
+ }
+ }
+
+ @Override
+ public synchronized Future<Void> createReconnectingClient(final InetSocketAddress remoteAddress, final BGPPeerRegistry peerRegistry,
+ final int retryTimer, final Optional<KeyMapping> keys) {
+ return createReconnectingClient(remoteAddress, peerRegistry, retryTimer, keys, null, false);
+ }
+
+ @VisibleForTesting
+ protected synchronized Future<Void> createReconnectingClient(final InetSocketAddress remoteAddress, final BGPPeerRegistry peerRegistry,
+ final int retryTimer, final Optional<KeyMapping> keys, final InetSocketAddress localAddress, final boolean reuseAddress) {
+ final BGPClientSessionNegotiatorFactory snf = new BGPClientSessionNegotiatorFactory(peerRegistry);
+ final Bootstrap bootstrap = createClientBootStrap(keys, reuseAddress);
+ bootstrap.localAddress(localAddress);
+ final BGPReconnectPromise reconnectPromise = new BGPReconnectPromise(GlobalEventExecutor.INSTANCE, remoteAddress,
+ retryTimer, bootstrap, peerRegistry, BGPChannel.createChannelPipelineInitializer(this.handlerFactory, snf));
+ reconnectPromise.connect();
+ return reconnectPromise;
+ }
+
+ @Override
+ public synchronized ChannelFuture createServer(final BGPPeerRegistry registry, final InetSocketAddress serverAddress) {
+ final BGPServerSessionNegotiatorFactory snf = new BGPServerSessionNegotiatorFactory(registry);
+ final ChannelPipelineInitializer initializer = BGPChannel.createChannelPipelineInitializer(this.handlerFactory, snf);
+ final ServerBootstrap serverBootstrap = createServerBootstrap(initializer);
+ final ChannelFuture channelFuture = serverBootstrap.bind(serverAddress);
+ LOG.debug("Initiated server {} at {}.", channelFuture, serverAddress);
+ return channelFuture;
+ }
+
+ private synchronized ServerBootstrap createServerBootstrap(final ChannelPipelineInitializer initializer) {
+ final ServerBootstrap serverBootstrap = new ServerBootstrap();
+ if (Epoll.isAvailable()) {
+ serverBootstrap.channel(EpollServerSocketChannel.class);
+ serverBootstrap.childOption(EpollChannelOption.EPOLL_MODE, EpollMode.LEVEL_TRIGGERED);
+ } else {
+ serverBootstrap.channel(NioServerSocketChannel.class);
+ }
+ final ChannelHandler serverChannelHandler = BGPChannel.createServerChannelHandler(initializer);
+ serverBootstrap.childHandler(serverChannelHandler);
+
+ serverBootstrap.option(ChannelOption.SO_BACKLOG, SOCKET_BACKLOG_SIZE);
+ serverBootstrap.childOption(ChannelOption.ALLOCATOR, PooledByteBufAllocator.DEFAULT);
+ serverBootstrap.childOption(ChannelOption.WRITE_BUFFER_HIGH_WATER_MARK, HIGH_WATER_MARK);
+ serverBootstrap.childOption(ChannelOption.WRITE_BUFFER_LOW_WATER_MARK, LOW_WATER_MARK);
+
+ // Make sure we are doing round-robin processing
+ serverBootstrap.option(ChannelOption.MAX_MESSAGES_PER_READ, 1);
+
+ if (serverBootstrap.group() == null) {
+ serverBootstrap.group(this.bossGroup, this.workerGroup);
+ }
+ return serverBootstrap;
+ }
+
+ private static final class BGPChannel {
+ private static final String NEGOTIATOR = "negotiator";
- private final Dispatcher dispatcher;
+ private BGPChannel() {
- public BGPDispatcherImpl(final Dispatcher dispatcher) throws IOException {
- this.dispatcher = dispatcher;
- }
+ }
- @Override
- public BGPSession createClient(final BGPConnection connection, final BGPMessageParser parser) throws IOException {
- return (BGPSession) this.dispatcher.createClient(connection, new BGPSessionFactory(parser), BGPInputStream.FACTORY);
- }
+ static <T extends BGPSessionNegotiatorFactory> ChannelPipelineInitializer
+ 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());
+ };
+ }
- public Dispatcher getDispatcher() {
- return this.dispatcher;
- }
+ static <S extends BGPSession> ChannelHandler createClientChannelHandler(final ChannelPipelineInitializer initializer, final Promise<S> promise) {
+ return new ChannelInitializer<SocketChannel>() {
+ @Override
+ protected void initChannel(final SocketChannel channel) {
+ initializer.initializeChannel(channel, promise);
+ }
+ };
+ }
- @Override
- public void close() {
- // This is only necessary for configuration interaction
- }
-}
+ static ChannelHandler createServerChannelHandler(final ChannelPipelineInitializer initializer) {
+ return new ChannelInitializer<SocketChannel>() {
+ @Override
+ protected void initChannel(final SocketChannel channel) {
+ initializer.initializeChannel(channel, new DefaultPromise<BGPSessionImpl>(GlobalEventExecutor.INSTANCE));
+ }
+ };
+ }
+ }
+}
\ No newline at end of file
Code Review / bgpcep.git / blobdiff