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Advanced and thread-safe Java Redis client for synchronous, asynchronous, and
reactive usage. Supports Cluster, Sentinel, Pipelining, Auto-Reconnect, Codecs
and much more.
/*
* Copyright 2011-2016 the original author or authors.
*
* 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 com.lambdaworks.redis;
import java.net.SocketAddress;
import com.lambdaworks.redis.event.EventBus;
import com.lambdaworks.redis.event.connection.ConnectionDeactivatedEvent;
import io.netty.channel.Channel;
import io.netty.channel.ChannelHandler;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import io.netty.channel.local.LocalAddress;
/**
* @author Mark Paluch
* @since 3.0
*/
@ChannelHandler.Sharable
class ConnectionEventTrigger extends ChannelInboundHandlerAdapter {
private final ConnectionEvents connectionEvents;
private final RedisChannelHandler connection;
private final EventBus eventBus;
public ConnectionEventTrigger(ConnectionEvents connectionEvents, RedisChannelHandler connection, EventBus eventBus) {
this.connectionEvents = connectionEvents;
this.connection = connection;
this.eventBus = eventBus;
}
@Override
public void channelActive(ChannelHandlerContext ctx) throws Exception {
connectionEvents.fireEventRedisConnected(connection, ctx.channel().remoteAddress());
super.channelActive(ctx);
}
@Override
public void channelInactive(ChannelHandlerContext ctx) throws Exception {
connectionEvents.fireEventRedisDisconnected(connection);
eventBus.publish(new ConnectionDeactivatedEvent(local(ctx), remote(ctx)));
super.channelInactive(ctx);
}
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
connectionEvents.fireEventRedisExceptionCaught(connection, cause);
super.exceptionCaught(ctx, cause);
}
static SocketAddress remote(ChannelHandlerContext ctx) {
if (ctx.channel() != null && ctx.channel().remoteAddress() != null) {
return ctx.channel().remoteAddress();
}
return new LocalAddress("unknown");
}
static SocketAddress local(ChannelHandlerContext ctx) {
Channel channel = ctx.channel();
if (channel != null && channel.localAddress() != null) {
return channel.localAddress();
}
return LocalAddress.ANY;
}
}