P2PClient.java

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/*
 * Turró i Cutiller Foundation. License notice.
 * Copyright (C) 2023 Lluis Turró Cutiller <http://www.turro.org/>
 *
 * 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.
 *
 * 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
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
package org.turro.alliance.service;
 
import java.io.IOException;
import java.net.URLDecoder;
import java.nio.charset.StandardCharsets;
import java.util.Objects;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.turro.collections.KeyValueMap;
import org.turro.elephant.context.Application;
import org.turro.elephant.context.ElephantApplication;
import org.turro.http.Respond;
import org.turro.json.Jsons;
import org.turro.ws.WsServer;
import org.turro.ws.WsServerPK;
import org.turro.ws.service.member.Servers;
import org.turro.ws.service.p2p.P2Ps;
 
@WebServlet(name = "P2PClient", urlPatterns = {"/p2pc/*"})
public class P2PClient extends HttpServlet {
 
  private void processP2P(Application application, String path, KeyValueMap map) throws IOException {
    if(Objects.equals("/attach", path)) {
      HttpServletResponse response = application.getHttpServletResponse();
      WsServer server = Servers.getServer(WsServerPK.from(map.get(String.class, "d"), AxServer.SERVER_SERVICE));
      Jsons criteria = Jsons.object().add("attachId", map.get(Long.class, "a"));
      Respond.to(response).name(map.get("n")).flush(
              P2Ps.getP2PContent(server.getServerDomain(), map.get(Long.class, "m"),
                      AxP2PServer.AX_P2P_SERVICE, AxConstants.ATTACHMENT, criteria));
    }
  }
 
  protected void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    KeyValueMap map = new KeyValueMap();
    for(String key : request.getParameterMap().keySet()) {
      map.put(key, URLDecoder.decode(request.getParameter(key), StandardCharsets.UTF_8));
    }
    processP2P(new ElephantApplication(request, response), request.getPathInfo(), map);
  }
  
  @Override
  protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    processRequest(request, response);
  }
  
  @Override
  protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    processRequest(request, response);
  }
  
  @Override
  public String getServletInfo() {
    return "P2P client servlet";
  }
 
}