*/
package org.opendaylight.protocol.bgp.rib.impl;
+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.socket.SocketChannel;
-import io.netty.util.HashedWheelTimer;
-import io.netty.util.Timer;
+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.EventExecutor;
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 java.net.InetSocketAddress;
+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.bgp.rib.impl.spi.BGPSessionPreferences;
-import org.opendaylight.protocol.framework.AbstractDispatcher;
+import org.opendaylight.protocol.bgp.rib.impl.spi.BGPPeerRegistry;
+import org.opendaylight.protocol.bgp.rib.impl.spi.BGPSessionValidator;
+import org.opendaylight.protocol.bgp.rib.spi.BGPSessionNegotiatorFactory;
import org.opendaylight.protocol.framework.ReconnectStrategy;
-import org.opendaylight.protocol.framework.SessionListenerFactory;
-
-import java.net.InetSocketAddress;
+import org.opendaylight.protocol.framework.ReconnectStrategyFactory;
+import org.opendaylight.tcpmd5.api.KeyMapping;
+import org.opendaylight.tcpmd5.netty.MD5ChannelFactory;
+import org.opendaylight.tcpmd5.netty.MD5ChannelOption;
+import org.opendaylight.tcpmd5.netty.MD5ServerChannelFactory;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.AsNumber;
+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() {
- }
+public class BGPDispatcherImpl implements BGPDispatcher, AutoCloseable {
+ private static final Logger LOG = LoggerFactory.getLogger(BGPDispatcherImpl.class);
+ private final MD5ServerChannelFactory<?> scf;
+ private final MD5ChannelFactory<?> cf;
+ private final BGPHandlerFactory hf;
+ private final EventLoopGroup bossGroup;
+ private final EventLoopGroup workerGroup;
+ private final EventExecutor executor;
+ private KeyMapping keys;
+
+ public BGPDispatcherImpl(final MessageRegistry messageRegistry, final EventLoopGroup bossGroup, final EventLoopGroup workerGroup) {
+ this(messageRegistry, bossGroup, workerGroup, null, null);
+ }
+
+ public BGPDispatcherImpl(final MessageRegistry messageRegistry, final EventLoopGroup bossGroup, final EventLoopGroup workerGroup, final MD5ChannelFactory<?> cf, final MD5ServerChannelFactory<?> scf) {
+ this.bossGroup = Preconditions.checkNotNull(bossGroup);
+ this.workerGroup = Preconditions.checkNotNull(workerGroup);
+ this.executor = Preconditions.checkNotNull(GlobalEventExecutor.INSTANCE);
+ this.hf = new BGPHandlerFactory(messageRegistry);
+ this.cf = cf;
+ this.scf = scf;
+ this.keys = null;
+ }
+
+ @Override
+ public synchronized Future<BGPSessionImpl> createClient(final InetSocketAddress address,
+ final AsNumber remoteAs, final BGPPeerRegistry listener, final ReconnectStrategy strategy) {
+ final BGPClientSessionNegotiatorFactory snf = new BGPClientSessionNegotiatorFactory(remoteAs, listener);
+ final ChannelPipelineInitializer initializer = BGPChannel.createChannelPipelineInitializer
+ (BGPDispatcherImpl.this.hf.getDecoders(), snf, BGPDispatcherImpl.this.hf.getEncoders());
+
+ final Bootstrap b = new Bootstrap();
+ final BGPProtocolSessionPromise p = new BGPProtocolSessionPromise(this.executor, address, strategy, b);
+ b.option(ChannelOption.SO_KEEPALIVE, Boolean.valueOf(true));
+ b.handler(BGPChannel.createChannelInitializer(initializer, p));
+ this.customizeBootstrap(b);
+ this.setWorkerGroup(b);
+ p.connect();
+ LOG.debug("Client created.");
+ return p;
+ }
+
+ @Override
+ public void close() {
+ try {
+ this.workerGroup.shutdownGracefully();
+ } finally {
+ this.bossGroup.shutdownGracefully();
+ }
+ }
+
+ @Override
+ public synchronized Future<Void> createReconnectingClient(final InetSocketAddress address,
+ final AsNumber remoteAs, final BGPPeerRegistry peerRegistry, final ReconnectStrategyFactory connectStrategyFactory,
+ final KeyMapping keys) {
+ final BGPClientSessionNegotiatorFactory snf = new BGPClientSessionNegotiatorFactory(remoteAs, peerRegistry);
+ this.keys = keys;
+
+ final Bootstrap b = new Bootstrap();
+ final BGPReconnectPromise p = new BGPReconnectPromise(GlobalEventExecutor.INSTANCE, address,
+ connectStrategyFactory, b, BGPChannel.createChannelPipelineInitializer(BGPDispatcherImpl.this.hf.getDecoders(), snf, BGPDispatcherImpl.this.hf.getEncoders()));
+ b.option(ChannelOption.SO_KEEPALIVE, Boolean.valueOf(true));
+ this.customizeBootstrap(b);
+ this.setWorkerGroup(b);
+ p.connect();
+
+ this.keys = null;
+
+ return p;
+ }
+
+ @Override
+ public ChannelFuture createServer(final BGPPeerRegistry registry, final InetSocketAddress address, final BGPSessionValidator sessionValidator) {
+ final BGPServerSessionNegotiatorFactory snf = new BGPServerSessionNegotiatorFactory(sessionValidator, registry);
+ final ChannelPipelineInitializer initializer = BGPChannel.createChannelPipelineInitializer
+ (BGPDispatcherImpl.this.hf.getDecoders(), snf, BGPDispatcherImpl.this.hf.getEncoders());
+ final ServerBootstrap b = new ServerBootstrap();
+ b.childHandler(BGPChannel.createChannelInitializer(initializer, new DefaultPromise(BGPDispatcherImpl.this.executor)));
+ b.option(ChannelOption.SO_BACKLOG, Integer.valueOf(128));
+ b.childOption(ChannelOption.ALLOCATOR, PooledByteBufAllocator.DEFAULT);
+ this.customizeBootstrap(b);
+
+ final ChannelFuture f = b.bind(address);
+ LOG.debug("Initiated server {} at {}.", f, address);
+ return f;
+ }
+
+ protected void customizeBootstrap(final Bootstrap b) {
+ if (this.keys != null && !this.keys.isEmpty()) {
+ if (this.cf == null) {
+ throw new UnsupportedOperationException("No key access instance available, cannot use key mapping");
+ }
+ b.channelFactory(this.cf);
+ b.option(MD5ChannelOption.TCP_MD5SIG, this.keys);
+ }
+
+ // Make sure we are doing round-robin processing
+ b.option(ChannelOption.MAX_MESSAGES_PER_READ, 1);
+ }
+
+ private void customizeBootstrap(final ServerBootstrap b) {
+ if (this.keys != null && !this.keys.isEmpty()) {
+ if (this.scf == null) {
+ throw new UnsupportedOperationException("No key access instance available, cannot use key mapping");
+ }
+ b.channelFactory(this.scf);
+ b.option(MD5ChannelOption.TCP_MD5SIG, this.keys);
+ }
+
+ // Make sure we are doing round-robin processing
+ b.option(ChannelOption.MAX_MESSAGES_PER_READ, 1);
+
+ if (b.group() == null) {
+ b.group(this.bossGroup, this.workerGroup);
+ }
+
+ try {
+ b.channel(NioServerSocketChannel.class);
+ } catch (IllegalStateException e) {
+ LOG.trace("Not overriding channelFactory on bootstrap {}", b, e);
+ }
+ }
+
+ private void setWorkerGroup(final Bootstrap b) {
+ if (b.group() == null) {
+ b.group(this.workerGroup);
+ }
+ try {
+ b.channel(NioSocketChannel.class);
+ } catch (IllegalStateException e) {
+ LOG.trace("Not overriding channelFactory on bootstrap {}", b, e);
+ }
+ }
+
+ public interface ChannelPipelineInitializer {
+ void initializeChannel(SocketChannel socketChannel, Promise<BGPSessionImpl> promise);
+ }
+
+ public static class BGPChannel {
+ private static final String NEGOTIATOR = "negotiator";
+
+ private BGPChannel() {
+
+ }
+
+ public static <T extends BGPSessionNegotiatorFactory> ChannelPipelineInitializer createChannelPipelineInitializer(final ChannelHandler[] channelDecoder,
+ final T snf,
+ final ChannelHandler[] channelEncoder) {
+ return new ChannelPipelineInitializer() {
+ @Override
+ public void initializeChannel(final SocketChannel ch, final Promise<BGPSessionImpl> promise) {
+ ch.pipeline().addLast(channelDecoder);
+ ch.pipeline().addLast(NEGOTIATOR, snf.getSessionNegotiator(ch, promise));
+ ch.pipeline().addLast(channelEncoder);
+ }
+ };
+ }
+
+ public static ChannelHandler createChannelInitializer(final ChannelPipelineInitializer initializer, final Promise<BGPSessionImpl> promise) {
+ return new ChannelInitializer<SocketChannel>() {
+ @Override
+ protected void initChannel(SocketChannel ch) {
+ initializer.initializeChannel(ch, promise);
+ }
+ };
+ }
+ }
}
+
+
Code Review / bgpcep.git / blobdiff