| 1 | /*************************************************************************** |
| 2 | * Copyright (C) 2006 by Gerd v. Egidy * |
| 3 | * gve@intra2net.com * |
| 4 | * * |
| 5 | * This library is free software; you can redistribute it and/or modify * |
| 6 | * it under the terms of the GNU Lesser General Public License version * |
| 7 | * 2.1 as published by the Free Software Foundation. * |
| 8 | * * |
| 9 | * This library is distributed in the hope that it will be useful, * |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of * |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
| 12 | * GNU Lesser General Public License for more details. * |
| 13 | * * |
| 14 | * You should have received a copy of the GNU Lesser General Public * |
| 15 | * License along with this program; if not, write to the * |
| 16 | * Free Software Foundation, Inc., * |
| 17 | * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * |
| 18 | ***************************************************************************/ |
| 19 | |
| 20 | #include <string> |
| 21 | #include <sstream> |
| 22 | #include <stdexcept> |
| 23 | |
| 24 | #include <boost/archive/binary_oarchive.hpp> |
| 25 | #include <boost/archive/binary_iarchive.hpp> |
| 26 | #include <boost/archive/xml_oarchive.hpp> |
| 27 | #include <boost/archive/xml_iarchive.hpp> |
| 28 | #include <boost/serialization/serialization.hpp> |
| 29 | |
| 30 | #include "command_server.hxx" |
| 31 | #include "container.hxx" |
| 32 | #include "log.hxx" |
| 33 | |
| 34 | using namespace std; |
| 35 | |
| 36 | namespace libt2n |
| 37 | { |
| 38 | |
| 39 | /// handle a command including deserialization and answering |
| 40 | void command_server::handle_packet(const std::string& packet, server_connection* conn) |
| 41 | { |
| 42 | OBJLOGSTREAM(s,debug,"handling packet from connection " << conn->get_id()); |
| 43 | |
| 44 | // deserialize packet |
| 45 | istringstream ifs(packet); |
| 46 | boost::archive::binary_iarchive ia(ifs); |
| 47 | command_container ccont; |
| 48 | |
| 49 | // TODO: catch |
| 50 | ia >> ccont; |
| 51 | |
| 52 | std::ostream* ostr; |
| 53 | if ((ostr=s.get_logstream(fulldebug))!=NULL) |
| 54 | { |
| 55 | (*ostr) << "decoded packet data: " << std::endl; |
| 56 | boost::archive::xml_oarchive xo(*ostr); |
| 57 | xo << BOOST_SERIALIZATION_NVP(ccont); |
| 58 | } |
| 59 | |
| 60 | // TODO: cast to command subclass (template) |
| 61 | command *cmd=ccont.get_command(); |
| 62 | |
| 63 | result_container res; |
| 64 | |
| 65 | if (cmd) |
| 66 | { |
| 67 | try |
| 68 | { |
| 69 | res.set_result((*cmd)()); |
| 70 | } |
| 71 | catch (t2n_exception &e) |
| 72 | { res.set_exception(e.clone()); } |
| 73 | catch (...) |
| 74 | { throw; } |
| 75 | } |
| 76 | else |
| 77 | throw logic_error("uninitialized command called"); |
| 78 | |
| 79 | ostringstream ofs; |
| 80 | boost::archive::binary_oarchive oa(ofs); |
| 81 | |
| 82 | // TODO: catch |
| 83 | oa << res; |
| 84 | |
| 85 | if ((ostr=s.get_logstream(fulldebug))!=NULL) |
| 86 | { |
| 87 | (*ostr) << "returning result, decoded data: " << std::endl; |
| 88 | boost::archive::xml_oarchive xo(*ostr); |
| 89 | xo << BOOST_SERIALIZATION_NVP(res); |
| 90 | } |
| 91 | |
| 92 | conn->write(ofs.str()); |
| 93 | } |
| 94 | |
| 95 | /** @brief handle incoming commands |
| 96 | @param usec_timeout wait until new data is found, max timeout usecs. |
| 97 | -1: wait endless, 0: no timeout |
| 98 | */ |
| 99 | void command_server::handle(long long usec_timeout) |
| 100 | { |
| 101 | if (s.fill_buffer(usec_timeout)) |
| 102 | { |
| 103 | string packet; |
| 104 | unsigned int conn_id; |
| 105 | |
| 106 | while (s.get_packet(packet,conn_id)) |
| 107 | handle_packet(packet,s.get_connection(conn_id)); |
| 108 | } |
| 109 | s.cleanup(); |
| 110 | } |
| 111 | |
| 112 | } |