org.obm.locator.BlockingServlet.java Source code

Introduction

Here is the source code for org.obm.locator.BlockingServlet.java

Source

/* ***** BEGIN LICENSE BLOCK *****
 * Copyright (C) 2011-2014  Linagora
 *
 * This program is free software: you can redistribute it and/or modify it under
 * the terms of the GNU Affero General Public License as published by the Free
 * Software Foundation, either version 3 of the License, or (at your option) any
 * later version, provided you comply with the Additional Terms applicable for OBM
 * software by Linagora pursuant to Section 7 of the GNU Affero General Public
 * License, subsections (b), (c), and (e), pursuant to which you must notably (i)
 * retain the displaying by the interactive user interfaces of the OBM, Free
 * Communication by Linagora? Logo with the You are using the Open Source and
 * free version of OBM developed and supported by Linagora. Contribute to OBM R&D
 * by subscribing to an Enterprise offer !? infobox, (ii) retain all hypertext
 * links between OBM and obm.org, between Linagora and linagora.com, as well as
 * between the expression Enterprise offer? and pro.obm.org, and (iii) refrain
 * from infringing Linagora intellectual property rights over its trademarks and
 * commercial brands. Other Additional Terms apply, see
 * <http://www.linagora.com/licenses/> for more details.
 *
 * This program 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License and
 * its applicable Additional Terms for OBM along with this program. If not, see
 * <http://www.gnu.org/licenses/> for the GNU Affero General   Public License
 * version 3 and <http://www.linagora.com/licenses/> for the Additional Terms
 * applicable to the OBM software.
 * ***** END LICENSE BLOCK ***** */
package org.obm.locator;

import java.io.IOException;
import java.util.concurrent.LinkedBlockingQueue;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.http.HttpStatus;

import com.google.common.base.Throwables;
import com.google.inject.Inject;
import com.google.inject.Singleton;

@Singleton
public class BlockingServlet extends HttpServlet {

    private final LinkedBlockingQueue<Reply> nextResponses;

    @Inject
    private BlockingServlet() {
        nextResponses = new LinkedBlockingQueue<Reply>();
    }

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        Reply reply = new Reply("ok", HttpStatus.SC_OK);
        try {
            reply = nextResponses.take();
        } catch (InterruptedException e) {
            Throwables.propagate(e);
        }
        resp.setStatus(reply.status);
        resp.getWriter().write(reply.content);
    }

    public LinkedBlockingQueue<Reply> getIncomingMessages() {
        return nextResponses;
    }

    public void unlockNextRequestWithResponse(String response) {
        unlockNextRequestWithResponse(response, HttpStatus.SC_OK);
    }

    public void unlockNextRequestWithResponse(String response, int status) {
        nextResponses.offer(new Reply(response, status));
    }

    public static class Reply {

        public final String content;
        public final int status;

        public Reply(String content, int status) {
            this.content = content;
            this.status = status;
        }
    }

}