com.netflix.netty.common.CloseOnIdleStateHandler Maven / Gradle / Ivy
/**
* Copyright 2018 Netflix, 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.netflix.netty.common;
import com.netflix.spectator.api.Counter;
import com.netflix.spectator.api.Registry;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import io.netty.handler.timeout.IdleStateEvent;
/**
* Just listens for the IdleStateEvent and closes the channel if received.
*/
public class CloseOnIdleStateHandler extends ChannelInboundHandlerAdapter {
private final Counter counter;
public CloseOnIdleStateHandler(Registry registry, String metricId) {
this.counter = registry.counter("server.connections.idle.timeout", "id", metricId);
}
@Override
public void userEventTriggered(ChannelHandlerContext ctx, Object evt) throws Exception {
super.userEventTriggered(ctx, evt);
if (evt instanceof IdleStateEvent) {
counter.increment();
ctx.close();
}
}
}