Bump versions by x.y.(z+1)
[bgpcep.git] / bgp / rib-impl / src / main / java / org / opendaylight / protocol / bgp / rib / impl / BGPDispatcherImpl.java
old mode 100755 (executable)
new mode 100644 (file)
index 732263c..5160d56
@@ -7,6 +7,7 @@
  */
 package org.opendaylight.protocol.bgp.rib.impl;
 
+import com.google.common.annotations.VisibleForTesting;
 import com.google.common.base.Optional;
 import com.google.common.base.Preconditions;
 import io.netty.bootstrap.Bootstrap;
@@ -17,6 +18,12 @@ 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;
@@ -25,6 +32,7 @@ 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;
@@ -33,10 +41,7 @@ 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.tcpmd5.api.KeyMapping;
-import org.opendaylight.tcpmd5.netty.MD5ChannelFactory;
-import org.opendaylight.tcpmd5.netty.MD5ChannelOption;
-import org.opendaylight.tcpmd5.netty.MD5ServerChannelFactory;
+import org.opendaylight.protocol.concepts.KeyMapping;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -48,57 +53,70 @@ public class BGPDispatcherImpl implements BGPDispatcher, AutoCloseable {
     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 MD5ServerChannelFactory<?> serverChannelFactory;
-    private final MD5ChannelFactory<?> channelFactory;
     private final BGPHandlerFactory handlerFactory;
     private final EventLoopGroup bossGroup;
     private final EventLoopGroup workerGroup;
-    private Optional<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);
+        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);
-        this.channelFactory = cf;
-        this.serverChannelFactory = scf;
-        this.keys = Optional.absent();
     }
 
     @Override
-    public synchronized Future<BGPSessionImpl> createClient(final InetSocketAddress address, final BGPPeerRegistry listener, final int retryTimer) {
+    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(BGPDispatcherImpl.this.handlerFactory, snf);
+        final ChannelPipelineInitializer initializer = BGPChannel.createChannelPipelineInitializer(this.handlerFactory, snf);
 
-        final Bootstrap bootstrap = createClientBootStrap();
-        final BGPProtocolSessionPromise sessionPromise = new BGPProtocolSessionPromise(address, retryTimer, bootstrap);
-        bootstrap.handler(BGPChannel.createClientChannelHandler(initializer, sessionPromise));
+        final BGPProtocolSessionPromise sessionPromise = new BGPProtocolSessionPromise(remoteAddress, retryTimer, clientBootStrap, listener);
+        clientBootStrap.handler(BGPChannel.createClientChannelHandler(initializer, sessionPromise));
         sessionPromise.connect();
         LOG.debug("Client created.");
         return sessionPromise;
     }
 
-    protected Bootstrap createClientBootStrap() {
+    @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 (this.keys.isPresent()) {
-            if (this.channelFactory == null) {
-                throw new UnsupportedOperationException("No key access instance available, cannot use key mapping");
-            }
-            bootstrap.channelFactory(this.channelFactory);
-            bootstrap.option(MD5ChannelOption.TCP_MD5SIG, this.keys.get());
+        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);
@@ -108,50 +126,57 @@ public class BGPDispatcherImpl implements BGPDispatcher, AutoCloseable {
     }
 
     @Override
-    public void close() {
+    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 address, final BGPPeerRegistry peerRegistry,
+    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);
-        this.keys = keys;
-        final Bootstrap bootstrap = createClientBootStrap();
-        final BGPReconnectPromise reconnectPromise = new BGPReconnectPromise(GlobalEventExecutor.INSTANCE, address,
-            retryTimer, bootstrap, BGPChannel.createChannelPipelineInitializer(BGPDispatcherImpl.this.handlerFactory, snf));
+        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();
-        this.keys = Optional.absent();
         return reconnectPromise;
     }
 
     @Override
-    public ChannelFuture createServer(final BGPPeerRegistry registry, final InetSocketAddress address) {
+    public synchronized ChannelFuture createServer(final BGPPeerRegistry registry, final InetSocketAddress serverAddress) {
         final BGPServerSessionNegotiatorFactory snf = new BGPServerSessionNegotiatorFactory(registry);
-        final ChannelPipelineInitializer initializer = BGPChannel.createChannelPipelineInitializer(BGPDispatcherImpl.this.handlerFactory, snf);
+        final ChannelPipelineInitializer initializer = BGPChannel.createChannelPipelineInitializer(this.handlerFactory, snf);
         final ServerBootstrap serverBootstrap = createServerBootstrap(initializer);
-        final ChannelFuture channelFuture = serverBootstrap.bind(address);
-        LOG.debug("Initiated server {} at {}.", channelFuture, address);
+        final ChannelFuture channelFuture = serverBootstrap.bind(serverAddress);
+        LOG.debug("Initiated server {} at {}.", channelFuture, serverAddress);
         return channelFuture;
     }
 
-    private ServerBootstrap createServerBootstrap(final ChannelPipelineInitializer initializer) {
+    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, Integer.valueOf(SOCKET_BACKLOG_SIZE));
+        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);
-        if (this.keys.isPresent()) {
-            if (this.serverChannelFactory == null) {
-                throw new UnsupportedOperationException("No key access instance available, cannot use key mapping");
-            }
-            serverBootstrap.channelFactory(this.serverChannelFactory);
-            serverBootstrap.option(MD5ChannelOption.TCP_MD5SIG, this.keys.get());
-        } else {
-            serverBootstrap.channel(NioServerSocketChannel.class);
-        }
 
         // Make sure we are doing round-robin processing
         serverBootstrap.option(ChannelOption.MAX_MESSAGES_PER_READ, 1);
@@ -169,19 +194,16 @@ public class BGPDispatcherImpl implements BGPDispatcher, AutoCloseable {
 
         }
 
-        public static <S extends BGPSession, T extends BGPSessionNegotiatorFactory> ChannelPipelineInitializer
-            createChannelPipelineInitializer(final BGPHandlerFactory hf, final T snf) {
-            return new ChannelPipelineInitializer<S>() {
-                @Override
-                public void initializeChannel(final SocketChannel channel, final Promise<S> promise) {
-                    channel.pipeline().addLast(hf.getDecoders());
-                    channel.pipeline().addLast(NEGOTIATOR, snf.getSessionNegotiator(channel, promise));
-                    channel.pipeline().addLast(hf.getEncoders());
-                }
+        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 static <S extends BGPSession> ChannelHandler createClientChannelHandler(final ChannelPipelineInitializer initializer, final Promise<S> promise) {
+        static <S extends BGPSession> ChannelHandler createClientChannelHandler(final ChannelPipelineInitializer initializer, final Promise<S> promise) {
             return new ChannelInitializer<SocketChannel>() {
                 @Override
                 protected void initChannel(final SocketChannel channel) {
@@ -190,7 +212,7 @@ public class BGPDispatcherImpl implements BGPDispatcher, AutoCloseable {
             };
         }
 
-        public static ChannelHandler createServerChannelHandler(final ChannelPipelineInitializer initializer) {
+        static ChannelHandler createServerChannelHandler(final ChannelPipelineInitializer initializer) {
             return new ChannelInitializer<SocketChannel>() {
                 @Override
                 protected void initChannel(final SocketChannel channel) {
@@ -199,4 +221,4 @@ public class BGPDispatcherImpl implements BGPDispatcher, AutoCloseable {
             };
         }
     }
-}
+}
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