/*
* Copyright 2014 NAVER Corp.
*
* 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.navercorp.pinpoint.rpc.stream;
import java.util.Collections;
import java.util.HashSet;
import java.util.Set;
/**
* @author koo.taejin
*/
public enum StreamChannelStateCode {
NEW,
OPEN(NEW),
CONNECT_AWAIT(OPEN),
CONNECT_ARRIVED(OPEN),
CONNECTED(CONNECT_AWAIT, CONNECT_ARRIVED),
CLOSED(CONNECT_AWAIT, CONNECT_ARRIVED, CONNECTED),
ILLEGAL_STATE(NEW, OPEN, CONNECT_AWAIT, CONNECT_ARRIVED, CONNECTED, CLOSED);
private final Set<StreamChannelStateCode> validBeforeStateSet;
StreamChannelStateCode(StreamChannelStateCode... validBeforeStates) {
this.validBeforeStateSet = new HashSet<StreamChannelStateCode>();
if (validBeforeStates != null) {
Collections.addAll(validBeforeStateSet, validBeforeStates);
}
}
public boolean canChangeState(StreamChannelStateCode currentState) {
if (validBeforeStateSet.contains(currentState)) {
return true;
}
return false;
}
}