org.wso2.broker.amqp.codec.handlers.BlockingTaskHandler Maven / Gradle / Ivy

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/*
 * Copyright (c) 2017, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
 *
 * WSO2 Inc. licenses this file to you 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.wso2.broker.amqp.codec.handlers;

import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.wso2.broker.amqp.codec.BlockingTask;

/**
 * {@code BlockingTaskHandler} is handles by a separate executor group to handle event so that the Netty event loop
 * does not get blocked.
 */
public class BlockingTaskHandler extends ChannelInboundHandlerAdapter {
    private static final Logger LOGGER = LoggerFactory.getLogger(BlockingTaskHandler.class);

    @Override
    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
        if (msg instanceof BlockingTask) {
            ((BlockingTask) msg).execute();
        }
    }

    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
        LOGGER.warn("Exception while handling request", cause);
        ctx.close();
    }
}