/*
* 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.server;
import com.navercorp.pinpoint.rpc.common.SocketState;
import com.navercorp.pinpoint.rpc.common.SocketStateChangeResult;
import com.navercorp.pinpoint.rpc.common.SocketStateCode;
import com.navercorp.pinpoint.rpc.server.handler.ServerStateChangeEventHandler;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.List;
/**
* @author Taejin Koo
*/
public class DefaultPinpointServerState {
private final Logger logger = LoggerFactory.getLogger(this.getClass());
private final DefaultPinpointServer pinpointServer;
private final List<ServerStateChangeEventHandler> stateChangeEventListeners;
private final SocketState state;
public DefaultPinpointServerState(DefaultPinpointServer pinpointServer, List<ServerStateChangeEventHandler> stateChangeEventListeners) {
this.pinpointServer = pinpointServer;
this.stateChangeEventListeners = stateChangeEventListeners;
this.state = new SocketState();
}
SocketStateChangeResult toConnected() {
SocketStateCode nextState = SocketStateCode.CONNECTED;
return to(nextState);
}
SocketStateChangeResult toRunWithoutHandshake() {
SocketStateCode nextState = SocketStateCode.RUN_WITHOUT_HANDSHAKE;
return to(nextState);
}
SocketStateChangeResult toRunSimplex() {
SocketStateCode nextState = SocketStateCode.RUN_SIMPLEX;
return to(nextState);
}
SocketStateChangeResult toRunDuplex() {
SocketStateCode nextState = SocketStateCode.RUN_DUPLEX;
return to(nextState);
}
SocketStateChangeResult toBeingClose() {
SocketStateCode nextState = SocketStateCode.BEING_CLOSE_BY_SERVER;
return to(nextState);
}
SocketStateChangeResult toBeingCloseByPeer() {
SocketStateCode nextState = SocketStateCode.BEING_CLOSE_BY_CLIENT;
return to(nextState);
}
SocketStateChangeResult toClosed() {
SocketStateCode nextState = SocketStateCode.CLOSED_BY_SERVER;
return to(nextState);
}
SocketStateChangeResult toClosedByPeer() {
SocketStateCode nextState = SocketStateCode.CLOSED_BY_CLIENT;
return to(nextState);
}
SocketStateChangeResult toUnexpectedClosed() {
SocketStateCode nextState = SocketStateCode.UNEXPECTED_CLOSE_BY_SERVER;
return to(nextState);
}
SocketStateChangeResult toUnexpectedClosedByPeer() {
SocketStateCode nextState = SocketStateCode.UNEXPECTED_CLOSE_BY_CLIENT;
return to(nextState);
}
SocketStateChangeResult toErrorUnknown() {
SocketStateCode nextState = SocketStateCode.ERROR_UNKNOWN;
return to(nextState);
}
SocketStateChangeResult toErrorSyncStateSession() {
SocketStateCode nextState = SocketStateCode.ERROR_SYNC_STATE_SESSION;
return to(nextState);
}
private SocketStateChangeResult to(SocketStateCode nextState) {
String objectUniqName = pinpointServer.getObjectUniqName();
logger.debug("{} stateTo() started. to:{}", objectUniqName, nextState);
SocketStateChangeResult stateChangeResult = state.to(nextState);
if (stateChangeResult.isChange()) {
executeChangeEventHandler(pinpointServer, nextState);
}
logger.info("{} stateTo() completed. {}", objectUniqName, stateChangeResult);
return stateChangeResult;
}
private void executeChangeEventHandler(DefaultPinpointServer pinpointServer, SocketStateCode nextState) {
for (ServerStateChangeEventHandler eachListener : this.stateChangeEventListeners) {
try {
eachListener.eventPerformed(pinpointServer, nextState);
} catch (Exception e) {
eachListener.exceptionCaught(pinpointServer, nextState, e);
}
}
}
boolean isEnableCommunication() {
return SocketStateCode.isRun(getCurrentStateCode());
}
boolean isEnableDuplexCommunication() {
return SocketStateCode.isRunDuplex(getCurrentStateCode());
}
SocketStateCode getCurrentStateCode() {
return state.getCurrentState();
}
}