| /* |
| * Copyright 2018-present Open Networking Foundation |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.onosproject.xmpp.core.ctl; |
| |
| import com.google.common.base.Strings; |
| import io.netty.bootstrap.ServerBootstrap; |
| import io.netty.buffer.PooledByteBufAllocator; |
| import io.netty.channel.AbstractChannel; |
| import io.netty.channel.Channel; |
| import io.netty.channel.ChannelOption; |
| import io.netty.channel.EventLoopGroup; |
| import io.netty.channel.epoll.EpollEventLoopGroup; |
| import io.netty.channel.epoll.EpollSocketChannel; |
| import io.netty.channel.nio.NioEventLoopGroup; |
| import io.netty.channel.socket.nio.NioServerSocketChannel; |
| import org.onosproject.xmpp.core.XmppDeviceFactory; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.net.InetSocketAddress; |
| import java.util.Dictionary; |
| |
| import static org.onlab.util.Tools.get; |
| import static org.onosproject.xmpp.core.ctl.OsgiPropertyConstants.XMPP_PORT; |
| |
| /** |
| * The XMPP server class. Starts XMPP server and listens to new XMPP device TCP connections. |
| */ |
| public class XmppServer { |
| |
| protected static final Logger log = LoggerFactory.getLogger(XmppServer.class); |
| |
| protected Integer port = 5259; |
| |
| protected Channel channel; |
| protected EventLoopGroup eventLoopGroup; |
| protected Class<? extends AbstractChannel> channelClass; |
| |
| |
| /** |
| * Initializes XMPP server. |
| */ |
| public void init() { |
| |
| } |
| |
| /** |
| * Runs XMPP server thread. |
| * @param deviceFactory XMPP devices factory |
| */ |
| public void run(XmppDeviceFactory deviceFactory) { |
| try { |
| final ServerBootstrap bootstrap = createServerBootStrap(deviceFactory); |
| |
| InetSocketAddress socketAddress = new InetSocketAddress(port); |
| channel = bootstrap.bind(socketAddress).sync().channel().closeFuture().channel(); |
| |
| log.info("Listening for device connections on {}", socketAddress); |
| |
| } catch (Exception ex) { |
| throw new IllegalStateException(ex); |
| } |
| } |
| |
| private ServerBootstrap createServerBootStrap(XmppDeviceFactory deviceFactory) { |
| |
| ServerBootstrap bootstrap = new ServerBootstrap(); |
| configureBootstrap(bootstrap); |
| initEventLoopGroup(); |
| |
| bootstrap.group(eventLoopGroup) |
| .channel(NioServerSocketChannel.class) |
| .childHandler(new XmppChannelInitializer(deviceFactory)); |
| |
| return bootstrap; |
| } |
| |
| /** |
| * Initializes event loop group. |
| */ |
| private void initEventLoopGroup() { |
| |
| // try to use EpollEventLoopGroup if possible, |
| // if OS does not support native Epoll, fallback to use netty NIO |
| try { |
| eventLoopGroup = new EpollEventLoopGroup(); |
| channelClass = EpollSocketChannel.class; |
| return; |
| } catch (Error e) { |
| log.debug("Failed to initialize native (epoll) transport. " |
| + "Reason: {}. Proceeding with NIO event group.", e); |
| } |
| eventLoopGroup = new NioEventLoopGroup(); |
| channelClass = NioServerSocketChannel.class; |
| } |
| |
| private void configureBootstrap(ServerBootstrap bootstrap) { |
| bootstrap.option(ChannelOption.ALLOCATOR, PooledByteBufAllocator.DEFAULT); |
| bootstrap.option(ChannelOption.SO_RCVBUF, 2048); |
| } |
| |
| /** |
| * TLS/SSL setup. If needed. |
| */ |
| private void initTls() { |
| // TODO: add support for TLS/SSL |
| } |
| |
| /** |
| * Sets configuration parameters defined via ComponentConfiguration subsystem. |
| * @param properties properties to be set |
| */ |
| public void setConfiguration(Dictionary<?, ?> properties) { |
| String port = get(properties, XMPP_PORT); |
| if (!Strings.isNullOrEmpty(port)) { |
| this.port = Integer.parseInt(port); |
| } |
| log.debug("XMPP port set to {}", this.port); |
| } |
| |
| /** |
| * Starts XMPP server. |
| * |
| * @param deviceFactory XMPP devices factory |
| */ |
| public void start(XmppDeviceFactory deviceFactory) { |
| log.info("XMPP Server has started."); |
| this.run(deviceFactory); |
| } |
| |
| /** |
| * Stops XMPP server. |
| * |
| */ |
| public void stop() { |
| log.info("Stopping XMPP I/O"); |
| channel.close(); |
| eventLoopGroup.shutdownGracefully(); |
| } |
| } |