/
DefaultNettyOptions.java
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/
DefaultNettyOptions.java
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/*
* Copyright (C) 2017-2017 DataStax 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.datastax.oss.driver.internal.core.context;
import com.datastax.oss.driver.internal.core.util.concurrent.BlockingOperation;
import com.google.common.util.concurrent.ThreadFactoryBuilder;
import io.netty.bootstrap.Bootstrap;
import io.netty.buffer.ByteBufAllocator;
import io.netty.channel.Channel;
import io.netty.channel.DefaultEventLoopGroup;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.nio.NioSocketChannel;
import io.netty.util.concurrent.EventExecutorGroup;
import io.netty.util.concurrent.Future;
import java.util.concurrent.ThreadFactory;
public class DefaultNettyOptions implements NettyOptions {
private final EventLoopGroup ioEventLoopGroup;
private final EventLoopGroup adminEventLoopGroup;
public DefaultNettyOptions() {
// TODO inject the cluster name in thread names
ThreadFactory safeFactory = new BlockingOperation.SafeThreadFactory();
ThreadFactory ioThreadFactory =
new ThreadFactoryBuilder().setThreadFactory(safeFactory).setNameFormat("io-%d").build();
this.ioEventLoopGroup = new NioEventLoopGroup(0, ioThreadFactory);
ThreadFactory adminThreadFactory =
new ThreadFactoryBuilder().setThreadFactory(safeFactory).setNameFormat("admin-%d").build();
int adminThreadCount = Math.min(2, Runtime.getRuntime().availableProcessors());
this.adminEventLoopGroup = new DefaultEventLoopGroup(adminThreadCount, adminThreadFactory);
}
@Override
public EventLoopGroup ioEventLoopGroup() {
return ioEventLoopGroup;
}
@Override
public EventExecutorGroup adminEventExecutorGroup() {
return adminEventLoopGroup;
}
@Override
public Class<? extends Channel> channelClass() {
return NioSocketChannel.class;
}
@Override
public ByteBufAllocator allocator() {
return ByteBufAllocator.DEFAULT;
}
@Override
public void afterBootstrapInitialized(Bootstrap bootstrap) {
// nothing to do
}
@Override
public void afterChannelInitialized(Channel channel) {
// nothing to do
}
@Override
public Future<?> onClose() {
return ioEventLoopGroup.shutdownGracefully();
}
}