/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF 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.apache.tajo.rpc;
/**
* A user event triggered by {@link org.apache.tajo.rpc.MonitorStateEvent} when a ping packet is not receive.
*/
public final class MonitorStateEvent {
/**
* An {@link Enum} that represents the monitor state of a remote peer.
*/
public enum MonitorState {
/**
* No ping was received.
*/
PING_EXPIRED
}
public static final MonitorStateEvent MONITOR_EXPIRED_STATE_EVENT = new MonitorStateEvent(MonitorState.PING_EXPIRED);
private final MonitorState state;
private MonitorStateEvent(MonitorState state) {
this.state = state;
}
/**
* Returns the monitor state.
*/
public MonitorState state() {
return state;
}
}