/*
* 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.common;
/**
* @author Taejin Koo
*/
public class SocketState {
private SocketStateCode beforeState = SocketStateCode.NONE;
private SocketStateCode currentState = SocketStateCode.NONE;
public synchronized SocketStateChangeResult to(SocketStateCode nextState) {
boolean enable = this.currentState.canChangeState(nextState);
if (enable) {
this.beforeState = this.currentState;
this.currentState = nextState;
return new SocketStateChangeResult(true, beforeState, currentState, nextState);
}
return new SocketStateChangeResult(false, beforeState, currentState, nextState);
}
public SocketStateChangeResult toBeingConnect() {
SocketStateCode nextState = SocketStateCode.BEING_CONNECT;
return to(nextState);
}
public SocketStateChangeResult toConnected() {
SocketStateCode nextState = SocketStateCode.CONNECTED;
return to(nextState);
}
public SocketStateChangeResult toConnectFailed() {
SocketStateCode nextState = SocketStateCode.CONNECT_FAILED;
return to(nextState);
}
public SocketStateChangeResult toIgnore() {
SocketStateCode nextState = SocketStateCode.IGNORE;
return to(nextState);
}
public SocketStateChangeResult toRunWithoutHandshake() {
SocketStateCode nextState = SocketStateCode.RUN_WITHOUT_HANDSHAKE;
return to(nextState);
}
public SocketStateChangeResult toRunSimplex() {
SocketStateCode nextState = SocketStateCode.RUN_SIMPLEX;
return to(nextState);
}
public SocketStateChangeResult toRunDuplex() {
SocketStateCode nextState = SocketStateCode.RUN_DUPLEX;
return to(nextState);
}
public SocketStateChangeResult toBeingCloseByClient() {
SocketStateCode nextState = SocketStateCode.BEING_CLOSE_BY_CLIENT;
return to(nextState);
}
public SocketStateChangeResult toClosedByClient() {
SocketStateCode nextState = SocketStateCode.CLOSED_BY_CLIENT;
return to(nextState);
}
public SocketStateChangeResult toUnexpectedCloseByClient() {
SocketStateCode nextState = SocketStateCode.UNEXPECTED_CLOSE_BY_CLIENT;
return to(nextState);
}
public SocketStateChangeResult toBeingCloseByServer() {
SocketStateCode nextState = SocketStateCode.BEING_CLOSE_BY_SERVER;
return to(nextState);
}
public SocketStateChangeResult toClosedByServer() {
SocketStateCode nextState = SocketStateCode.CLOSED_BY_SERVER;
return to(nextState);
}
public SocketStateChangeResult toUnexpectedCloseByServer() {
SocketStateCode nextState = SocketStateCode.UNEXPECTED_CLOSE_BY_SERVER;
return to(nextState);
}
public SocketStateChangeResult toUnknownError() {
SocketStateCode nextState = SocketStateCode.ERROR_UNKNOWN;
return to(nextState);
}
public SocketStateChangeResult toSyncStateSessionError() {
SocketStateCode nextState = SocketStateCode.ERROR_SYNC_STATE_SESSION;
return to(nextState);
}
public synchronized SocketStateCode getCurrentState() {
return currentState;
}
@Override
public String toString() {
SocketStateCode beforeState;
SocketStateCode currentState;
synchronized (this) {
beforeState = this.beforeState;
currentState = this.currentState;
}
StringBuilder toString = new StringBuilder();
toString.append(this.getClass().getSimpleName());
toString.append("(");
toString.append(beforeState);
toString.append("->");
toString.append(currentState);
toString.append(")");
return toString.toString();
}
}