io.netty.handler.timeout.IdleStateEvent Maven / Gradle / Ivy
/*
* Copyright 2012 The Netty Project
*
* The Netty Project 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 io.netty.handler.timeout;
import io.netty.channel.Channel;
import io.netty.util.internal.ObjectUtil;
/**
* A user event triggered by {@link IdleStateHandler} when a {@link Channel} is idle.
*/
public class IdleStateEvent {
public static final IdleStateEvent FIRST_READER_IDLE_STATE_EVENT = new IdleStateEvent(IdleState.READER_IDLE, true);
public static final IdleStateEvent READER_IDLE_STATE_EVENT = new IdleStateEvent(IdleState.READER_IDLE, false);
public static final IdleStateEvent FIRST_WRITER_IDLE_STATE_EVENT = new IdleStateEvent(IdleState.WRITER_IDLE, true);
public static final IdleStateEvent WRITER_IDLE_STATE_EVENT = new IdleStateEvent(IdleState.WRITER_IDLE, false);
public static final IdleStateEvent FIRST_ALL_IDLE_STATE_EVENT = new IdleStateEvent(IdleState.ALL_IDLE, true);
public static final IdleStateEvent ALL_IDLE_STATE_EVENT = new IdleStateEvent(IdleState.ALL_IDLE, false);
private final IdleState state;
private final boolean first;
/**
* Constructor for sub-classes.
*
* @param state the {@link IdleStateEvent} which triggered the event.
* @param first {@code true} if its the first idle event for the {@link IdleStateEvent}.
*/
protected IdleStateEvent(IdleState state, boolean first) {
this.state = ObjectUtil.checkNotNull(state, "state");
this.first = first;
}
/**
* Returns the idle state.
*/
public IdleState state() {
return state;
}
/**
* Returns {@code true} if this was the first event for the {@link IdleState}
*/
public boolean isFirst() {
return first;
}
}