*/
package org.opendaylight.protocol.pcep.impl;
-import io.netty.channel.ChannelFuture;
-import io.netty.util.concurrent.Future;
+import static java.util.Objects.requireNonNull;
-import java.io.IOException;
+import io.netty.bootstrap.ServerBootstrap;
+import io.netty.buffer.PooledByteBufAllocator;
+import io.netty.channel.ChannelFuture;
+import io.netty.channel.ChannelInitializer;
+import io.netty.channel.ChannelOption;
+import io.netty.channel.EventLoopGroup;
+import io.netty.channel.FixedRecvByteBufAllocator;
+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.socket.SocketChannel;
+import io.netty.channel.socket.nio.NioServerSocketChannel;
+import io.netty.util.concurrent.DefaultPromise;
+import io.netty.util.concurrent.EventExecutor;
+import io.netty.util.concurrent.GlobalEventExecutor;
+import io.netty.util.concurrent.Promise;
+import java.io.Closeable;
import java.net.InetSocketAddress;
-import java.util.concurrent.ExecutionException;
-
-import org.opendaylight.protocol.framework.Dispatcher;
-import org.opendaylight.protocol.framework.ReconnectStrategy;
-import org.opendaylight.protocol.framework.SessionListenerFactory;
-import org.opendaylight.protocol.framework.SessionNegotiatorFactory;
+import java.util.concurrent.TimeUnit;
+import org.checkerframework.checker.lock.qual.GuardedBy;
+import org.eclipse.jdt.annotation.NonNull;
+import org.opendaylight.protocol.concepts.KeyMapping;
import org.opendaylight.protocol.pcep.PCEPDispatcher;
-import org.opendaylight.protocol.pcep.PCEPMessage;
-import org.opendaylight.protocol.pcep.PCEPSession;
-import org.opendaylight.protocol.pcep.PCEPSessionListener;
+import org.opendaylight.protocol.pcep.PCEPDispatcherDependencies;
+import org.opendaylight.protocol.pcep.PCEPSessionNegotiatorFactory;
+import org.opendaylight.protocol.pcep.spi.MessageRegistry;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
/**
* Implementation of PCEPDispatcher.
*/
-public class PCEPDispatcherImpl implements PCEPDispatcher {
- private static final PCEPMessageFactory msgFactory = new PCEPMessageFactory();
- private final SessionNegotiatorFactory<PCEPMessage, PCEPSessionImpl, PCEPSessionListener> snf;
- private final Dispatcher dispatcher;
-
- /**
- * Creates an instance of PCEPDispatcherImpl, gets the default selector and opens it.
- *
- * @throws IOException if some error occurred during opening the selector
- */
- public PCEPDispatcherImpl(final Dispatcher dispatcher, final SessionNegotiatorFactory<PCEPMessage, PCEPSessionImpl, PCEPSessionListener> snf) {
- this.dispatcher = dispatcher;
- this.snf = snf;
- }
-
- @Override
- public ChannelFuture createServer(final InetSocketAddress address, final SessionListenerFactory<PCEPSessionListener> listenerFactory) {
- return this.dispatcher.createServer(address, listenerFactory, snf, msgFactory);
- }
-
- /**
- * Create client is used for mock purposes only.
- *
- * @throws ExecutionException
- * @throws InterruptedException
- */
- @Override
- public Future<? extends PCEPSession> createClient(final InetSocketAddress address, final PCEPSessionListener listener, final ReconnectStrategy strategy) {
- return this.dispatcher.createClient(address, listener, snf, msgFactory, strategy);
- }
+public class PCEPDispatcherImpl implements PCEPDispatcher, Closeable {
+ private static final Logger LOG = LoggerFactory.getLogger(PCEPDispatcherImpl.class);
+ private static final Integer SOCKET_BACKLOG_SIZE = 128;
+ private static final long TIMEOUT = 10;
+ private final PCEPSessionNegotiatorFactory<PCEPSessionImpl> snf;
+ private final PCEPHandlerFactory hf;
+ private final EventLoopGroup bossGroup;
+ private final EventLoopGroup workerGroup;
+ private final EventExecutor executor;
+ @GuardedBy("this")
+ private KeyMapping keys;
+
+ /**
+ * Creates an instance of PCEPDispatcherImpl, gets the default selector and opens it.
+ *
+ * @param registry a message registry
+ * @param negotiatorFactory a negotiation factory
+ * @param bossGroup accepts an incoming connection
+ * @param workerGroup handles the traffic of accepted connection
+ */
+ public PCEPDispatcherImpl(final @NonNull MessageRegistry registry,
+ final @NonNull PCEPSessionNegotiatorFactory<PCEPSessionImpl> negotiatorFactory,
+ final @NonNull EventLoopGroup bossGroup, final @NonNull EventLoopGroup workerGroup) {
+ this.snf = requireNonNull(negotiatorFactory);
+ this.hf = new PCEPHandlerFactory(registry);
+ if (Epoll.isAvailable()) {
+ this.bossGroup = new EpollEventLoopGroup();
+ this.workerGroup = new EpollEventLoopGroup();
+ } else {
+ this.bossGroup = requireNonNull(bossGroup);
+ this.workerGroup = requireNonNull(workerGroup);
+ }
+ this.executor = requireNonNull(GlobalEventExecutor.INSTANCE);
+ }
+
+ @Override
+ public final synchronized ChannelFuture createServer(final PCEPDispatcherDependencies dispatcherDependencies) {
+ this.keys = dispatcherDependencies.getKeys();
+
+ final ChannelPipelineInitializer initializer = (ch, promise) -> {
+ ch.pipeline().addLast(this.hf.getDecoders());
+ ch.pipeline().addLast("negotiator", this.snf
+ .getSessionNegotiator(dispatcherDependencies, ch, promise));
+ ch.pipeline().addLast(this.hf.getEncoders());
+ };
+
+ final ServerBootstrap b = createServerBootstrap(initializer);
+ final InetSocketAddress address = dispatcherDependencies.getAddress();
+ final ChannelFuture f = b.bind(address);
+ LOG.debug("Initiated server {} at {}.", f, address);
+
+ this.keys = KeyMapping.getKeyMapping();
+ return f;
+ }
+
+ synchronized ServerBootstrap createServerBootstrap(final ChannelPipelineInitializer initializer) {
+ final ServerBootstrap b = new ServerBootstrap();
+ b.childHandler(new ChannelInitializer<SocketChannel>() {
+ @Override
+ protected void initChannel(final SocketChannel ch) {
+ initializer.initializeChannel(ch, new DefaultPromise<>(PCEPDispatcherImpl.this.executor));
+ }
+ });
+ b.option(ChannelOption.SO_BACKLOG, SOCKET_BACKLOG_SIZE);
+
+ b.childOption(ChannelOption.ALLOCATOR, PooledByteBufAllocator.DEFAULT);
+
+ if (Epoll.isAvailable()) {
+ b.channel(EpollServerSocketChannel.class);
+ b.childOption(EpollChannelOption.EPOLL_MODE, EpollMode.LEVEL_TRIGGERED);
+ } else {
+ b.channel(NioServerSocketChannel.class);
+ }
+ if (!this.keys.isEmpty()) {
+ if (Epoll.isAvailable()) {
+ b.option(EpollChannelOption.TCP_MD5SIG, this.keys);
+ } else {
+ throw new UnsupportedOperationException(Epoll.unavailabilityCause().getCause());
+ }
+ }
+
+ // Make sure we are doing round-robin processing
+ b.childOption(ChannelOption.RCVBUF_ALLOCATOR, new FixedRecvByteBufAllocator(1));
+
+ if (b.config().group() == null) {
+ b.group(this.bossGroup, this.workerGroup);
+ }
+
+ return b;
+ }
+
+ @Override
+ public final void close() {
+ if (Epoll.isAvailable()) {
+ this.workerGroup.shutdownGracefully(0, TIMEOUT, TimeUnit.SECONDS);
+ this.bossGroup.shutdownGracefully(0, TIMEOUT, TimeUnit.SECONDS);
+ }
+ }
+
+ @Override
+ public final PCEPSessionNegotiatorFactory<PCEPSessionImpl> getPCEPSessionNegotiatorFactory() {
+ return this.snf;
+ }
+
+ protected interface ChannelPipelineInitializer {
+ void initializeChannel(SocketChannel socketChannel, Promise<PCEPSessionImpl> promise);
+ }
}
Code Review / bgpcep.git / blobdiff