wildfire chat server source initial submit

2019-03-16 17:04:23 +08:00
parent e59217bd10
commit cab3ca0916
1466 changed files with 528862 additions and 15919 deletions
@@ -0,0 +1,129 @@
+/*
+ * Copyright (c) 2012-2017 The original author or authors
+ * ------------------------------------------------------
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * and Apache License v2.0 which accompanies this distribution.
+ *
+ * The Eclipse Public License is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * The Apache License v2.0 is available at
+ * http://www.opensource.org/licenses/apache2.0.php
+ *
+ * You may elect to redistribute this code under either of these licenses.
+ */
+
+package io.moquette.server.netty;
+
+import io.moquette.spi.impl.ProtocolProcessor;
+import io.netty.channel.ChannelHandler.Sharable;
+import io.netty.channel.ChannelHandlerContext;
+import io.netty.channel.ChannelInboundHandlerAdapter;
+import io.netty.handler.codec.mqtt.*;
+import io.netty.util.ReferenceCountUtil;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import static io.netty.handler.codec.mqtt.MqttQoS.AT_MOST_ONCE;
+
+@Sharable
+public class NettyMQTTHandler extends ChannelInboundHandlerAdapter {
+
+    private static final Logger LOG = LoggerFactory.getLogger(NettyMQTTHandler.class);
+    private final ProtocolProcessor m_processor;
+
+    public NettyMQTTHandler(ProtocolProcessor processor) {
+        m_processor = processor;
+    }
+
+    @Override
+    public void channelRead(ChannelHandlerContext ctx, Object message) {
+        try {
+            if (!(message instanceof MqttMessage)) {
+                LOG.error("Unknown mqtt message type {}, {}", message.getClass().getName(), message);
+                return;
+            }
+            MqttMessage msg = (MqttMessage) message;
+            MqttMessageType messageType = msg.fixedHeader().messageType();
+            LOG.info("Processing MQTT message, type={}", messageType);
+
+            switch (messageType) {
+                case CONNECT:
+                    m_processor.processConnect(ctx.channel(), (MqttConnectMessage) msg);
+                    break;
+                case SUBSCRIBE:
+                    m_processor.processSubscribe(ctx.channel(), (MqttSubscribeMessage) msg);
+                    break;
+                case UNSUBSCRIBE:
+                    m_processor.processUnsubscribe(ctx.channel(), (MqttUnsubscribeMessage) msg);
+                    break;
+                case PUBLISH:
+                    m_processor.processPublish(ctx.channel(), (MqttPublishMessage) msg);
+                    break;
+                case PUBREC:
+                    m_processor.processPubRec(ctx.channel(), msg);
+                    break;
+                case PUBCOMP:
+                    m_processor.processPubComp(ctx.channel(), msg);
+                    break;
+                case PUBREL:
+                    m_processor.processPubRel(ctx.channel(), msg);
+                    break;
+                case DISCONNECT:
+                    m_processor.processDisconnect(ctx.channel(), msg.fixedHeader().isDup());
+                    break;
+                case PUBACK:
+                    m_processor.processPubAck(ctx.channel(), (MqttPubAckMessage) msg);
+                    break;
+                case PINGREQ:
+                    MqttFixedHeader pingHeader = new MqttFixedHeader(
+                            MqttMessageType.PINGRESP,
+                            false,
+                            AT_MOST_ONCE,
+                            false,
+                            0);
+                    MqttMessage pingResp = new MqttMessage(pingHeader);
+                    ctx.writeAndFlush(pingResp);
+                    break;
+                default:
+                    LOG.error("Unkonwn MessageType:{}", messageType);
+                    break;
+            }
+        } catch (Throwable ex) {
+            LOG.error("Exception was caught while processing MQTT message, " + ex.getCause(), ex);
+            ctx.fireExceptionCaught(ex);
+            ctx.close();
+        } finally {
+            ReferenceCountUtil.release(message);
+        }
+    }
+
+    @Override
+    public void channelInactive(ChannelHandlerContext ctx) throws Exception {
+        String clientID = NettyUtils.clientID(ctx.channel());
+        if (clientID != null && !clientID.isEmpty()) {
+            LOG.info("Notifying connection lost event. MqttClientId = {}.", clientID);
+            m_processor.processConnectionLost(clientID, ctx.channel());
+        }
+        ctx.close();
+    }
+
+    @Override
+    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
+        LOG.error("An unexpected exception was caught while processing MQTT message. Closing Netty channel. CId={}, " +
+            "cause={}, errorMessage={}", NettyUtils.clientID(ctx.channel()), cause.getCause(), cause.getMessage());
+        for (StackTraceElement ste : cause.getStackTrace()) {
+            LOG.error(ste.toString());
+        }
+        ctx.close();
+    }
+
+    @Override
+    public void channelWritabilityChanged(ChannelHandlerContext ctx) throws Exception {
+        if (ctx.channel().isWritable()) {
+            m_processor.notifyChannelWritable(ctx.channel());
+        }
+        ctx.fireChannelWritabilityChanged();
+    }
+
+}