text: /*  Sirikata libspace -- Location Services
   *  Loc.cpp
   *
   *  Copyright (c) 2009, Daniel Reiter Horn
   *  All rights reserved.
   *
   *  Redistribution and use in source and binary forms, with or without
   *  modification, are permitted provided that the following conditions are
   *  met:
   *  * Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   *  * Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in
   *    the documentation and/or other materials provided with the
   *    distribution.
   *  * Neither the name of Sirikata nor the names of its contributors may
   *    be used to endorse or promote products derived from this software
   *    without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
   * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
   * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
   * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
   * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
   * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
   * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
   * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
   * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
   * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  #include <space/Loc.hpp>
  #include <space/Registration.hpp>
  #include "Space_Sirikata.pbj.hpp"
  #include "util/RoutableMessage.hpp"
  #include "util/KnownServices.hpp"
  namespace Sirikata {
  Loc::Loc(){
      
  }
  
  Loc::~Loc() {
  
  }
  
  bool Loc::forwardMessagesTo(MessageService*ms) {
      mServices.push_back(ms);
      return true;
  }
  
  bool Loc::endForwardingMessagesTo(MessageService*ms) {
      std::vector<MessageService*>::iterator where=std::find(mServices.begin(),mServices.end(),ms);
      if (where==mServices.end())
          return false;
      mServices.erase(where);
      return true;
  }
  
  void Loc::processMessage(const ObjectReference&object_reference,const Protocol::ObjLoc&loc){
      RoutableMessageBody body;
      ;
      loc.SerializeToString(body.add_message("ObjLoc"));
      std::string message_body;
      body.SerializeToString(&message_body);
      RoutableMessageHeader destination_header;
      destination_header.set_source_object(ObjectReference::spaceServiceID());
      destination_header.set_source_port(Services::LOC);
      destination_header.set_destination_object(object_reference);
      
      for (std::vector<MessageService*>::iterator i=mServices.begin(),ie=mServices.end();i!=ie;++i) {
          (*i)->processMessage(destination_header,MemoryReference(message_body));
      }
     
  }
  void Loc::processMessage(const RoutableMessageHeader&header,MemoryReference message_body) {
      RoutableMessageBody body;
      if (body.ParseFromArray(message_body.data(),message_body.size())) {
          int num_args=body.message_size();
          if (header.has_source_object()&&header.source_object()==ObjectReference::spaceServiceID()&&header.source_port()==Services::REGISTRATION) {
              for (int i=0;i<num_args;++i) {
                  if (body.message_size()==0||body.message_names(i)=="RetObj") {
                      Protocol::RetObj retObj;
                      if (retObj.ParseFromString(body.message_arguments(i))&&retObj.has_location()) {
                          processMessage(ObjectReference(retObj.object_reference()),retObj.location());
                      }else {
                          SILOG(loc,warning,"Loc:Unable to parse RetObj message body originating from "<<header.source_object());
                      }
                  }
              }
          }else {
              for (int i=0;i<num_args;++i) {
                  Protocol::ObjLoc objLoc;
                  if (objLoc.ParseFromString(body.message_arguments(i))) {
                      processMessage(ObjectReference(header.source_object()),objLoc);
                  }else {
                      SILOG(loc,warning,"Loc:Unable to parse ObjLoc message body originating from "<<header.source_object());
                  }
              }           
              
          }
      }else {
          SILOG(loc,warning,"Loc:Unable to parse message body originating from "<<header.source_object());
      }
  }
  }
  