com.hotels.styx.client.netty.eventloop.nio.NioClientEventLoopGroupFactory Maven / Gradle / Ivy

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/**
 * Copyright (C) 2013-2017 Expedia Inc.
 *
 * 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.hotels.styx.client.netty.eventloop.nio;

import com.google.common.util.concurrent.ThreadFactoryBuilder;
import com.hotels.styx.api.netty.ClientEventLoopFactory;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioSocketChannel;

import static com.google.common.base.Preconditions.checkNotNull;

/**
 * A factory for creating non-blocking-I/O-based client event loops.
 */
public class NioClientEventLoopGroupFactory implements ClientEventLoopFactory {
    private final String name;
    private final int clientWorkerThreadsCount;

    /**
     * Constructs an instance.
     *
     * @param name name to prefix thread names with
     * @param clientWorkerThreadsCount number of client worker threads
     */
    public NioClientEventLoopGroupFactory(String name, int clientWorkerThreadsCount) {
        this.name = checkNotNull(name);
        this.clientWorkerThreadsCount = checkNotNull(clientWorkerThreadsCount);
    }

    @Override
    public EventLoopGroup newClientWorkerEventLoopGroup() {
        return new NioEventLoopGroup(clientWorkerThreadsCount, new ThreadFactoryBuilder()
                .setNameFormat(name + "-Client-Worker-%d-Thread")
                .build());
    }

    @Override
    public Class clientSocketChannelClass() {
        return NioSocketChannel.class;
    }
}