/*
* (C) Copyright 2013 Kurento (http://kurento.org/)
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the GNU Lesser General Public License
* (LGPL) version 2.1 which accompanies this distribution, and is available at
* http://www.gnu.org/licenses/lgpl-2.1.html
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
*/
package com.kurento.kmf.jsonrpcconnector.internal.client;
import static com.kurento.kmf.jsonrpcconnector.JsonUtils.INJECT_SESSION_ID;
import java.io.IOException;
import java.util.concurrent.atomic.AtomicBoolean;
import com.kurento.kmf.jsonrpcconnector.Session;
import com.kurento.kmf.jsonrpcconnector.Transaction;
import com.kurento.kmf.jsonrpcconnector.client.RequestAlreadyRespondedException;
import com.kurento.kmf.jsonrpcconnector.internal.message.Message;
import com.kurento.kmf.jsonrpcconnector.internal.message.Request;
import com.kurento.kmf.jsonrpcconnector.internal.message.Response;
import com.kurento.kmf.jsonrpcconnector.internal.message.ResponseError;
public class TransactionImpl implements Transaction {
public interface ResponseSender {
void sendResponse(Message message) throws IOException;
}
private final Session session;
private boolean async;
private final AtomicBoolean responded = new AtomicBoolean(false);
private final ResponseSender responseSender;
private final Request<?> request;
public TransactionImpl(Session session, Request<?> request,
ResponseSender responseSender) {
super();
this.session = session;
this.responseSender = responseSender;
this.request = request;
}
@Override
public void sendResponse(Object result) throws IOException {
internalSendResponse(new Response<>(request.getId(), result));
}
@Override
public Session getSession() {
return session;
}
@Override
public void startAsync() {
async = true;
}
public boolean isAsync() {
return async;
}
public boolean setRespondedIfNot() {
return responded.compareAndSet(false, true);
}
@Override
public void sendError(int code, String message, String data)
throws IOException {
internalSendResponse(new Response<>(request.getId(), new ResponseError(
code, message, data)));
}
@Override
public void sendError(Throwable e) throws IOException {
ResponseError error = ResponseError.newFromException(e);
internalSendResponse(new Response<>(request.getId(), error));
}
@Override
public boolean isNotification() {
return request.getId() == null;
}
@Override
public void sendResponseObject(Response<? extends Object> response)
throws IOException {
internalSendResponse(response);
}
private void internalSendResponse(Response<? extends Object> response)
throws IOException {
boolean notResponded = setRespondedIfNot();
if (notResponded) {
if (response.getSessionId() == null && INJECT_SESSION_ID) {
response.setSessionId(session.getSessionId());
}
responseSender.sendResponse(response);
} else {
throw new RequestAlreadyRespondedException(
"This request has already been responded");
}
}
}