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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> | |
28cb45a5 | 23 | #include <iostream> |
7087e187 GE |
24 | |
25 | #include <boost/archive/binary_oarchive.hpp> | |
26 | #include <boost/archive/binary_iarchive.hpp> | |
27 | #include <boost/archive/xml_oarchive.hpp> | |
28 | #include <boost/archive/xml_iarchive.hpp> | |
29 | #include <boost/serialization/serialization.hpp> | |
7087e187 | 30 | |
28cb45a5 GE |
31 | #include <boost/bind.hpp> |
32 | ||
7087e187 GE |
33 | #include "command_server.hxx" |
34 | #include "container.hxx" | |
a7170401 | 35 | #include "log.hxx" |
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36 | |
37 | using namespace std; | |
38 | ||
39 | namespace libt2n | |
40 | { | |
41 | ||
28cb45a5 GE |
42 | command_server::command_server(server& _s) |
43 | : s(_s) | |
44 | { | |
45 | // register callback | |
46 | s.add_callback(new_connection,bind(&command_server::new_connection_callback, boost::ref(*this), _1)); | |
47 | } | |
48 | ||
6cda58a6 | 49 | void command_server::new_connection_callback(unsigned int conn_id) |
28cb45a5 | 50 | { |
6cda58a6 | 51 | cerr << "new connection callback: " << conn_id << endl; |
28cb45a5 GE |
52 | } |
53 | ||
7087e187 GE |
54 | /// handle a command including deserialization and answering |
55 | void command_server::handle_packet(const std::string& packet, server_connection* conn) | |
56 | { | |
a7170401 GE |
57 | OBJLOGSTREAM(s,debug,"handling packet from connection " << conn->get_id()); |
58 | ||
7087e187 GE |
59 | // deserialize packet |
60 | istringstream ifs(packet); | |
61 | boost::archive::binary_iarchive ia(ifs); | |
62 | command_container ccont; | |
63 | ||
64 | // TODO: catch | |
65 | ia >> ccont; | |
66 | ||
d535333f GE |
67 | std::ostream* ostr; |
68 | if ((ostr=s.get_logstream(fulldebug))!=NULL) | |
69 | { | |
70 | (*ostr) << "decoded packet data: " << std::endl; | |
71 | boost::archive::xml_oarchive xo(*ostr); | |
72 | xo << BOOST_SERIALIZATION_NVP(ccont); | |
73 | } | |
74 | ||
7087e187 GE |
75 | // TODO: cast to command subclass (template) |
76 | command *cmd=ccont.get_command(); | |
77 | ||
78 | result_container res; | |
79 | ||
80 | if (cmd) | |
81 | { | |
82 | try | |
83 | { | |
84 | res.set_result((*cmd)()); | |
85 | } | |
86 | catch (t2n_exception &e) | |
87 | { res.set_exception(e.clone()); } | |
88 | catch (...) | |
89 | { throw; } | |
90 | } | |
91 | else | |
92 | throw logic_error("uninitialized command called"); | |
93 | ||
94 | ostringstream ofs; | |
95 | boost::archive::binary_oarchive oa(ofs); | |
96 | ||
97 | // TODO: catch | |
98 | oa << res; | |
99 | ||
d535333f GE |
100 | if ((ostr=s.get_logstream(fulldebug))!=NULL) |
101 | { | |
102 | (*ostr) << "returning result, decoded data: " << std::endl; | |
103 | boost::archive::xml_oarchive xo(*ostr); | |
104 | xo << BOOST_SERIALIZATION_NVP(res); | |
105 | } | |
106 | ||
7087e187 GE |
107 | conn->write(ofs.str()); |
108 | } | |
109 | ||
110 | /** @brief handle incoming commands | |
111 | @param usec_timeout wait until new data is found, max timeout usecs. | |
112 | -1: wait endless, 0: no timeout | |
113 | */ | |
114 | void command_server::handle(long long usec_timeout) | |
115 | { | |
116 | if (s.fill_buffer(usec_timeout)) | |
117 | { | |
118 | string packet; | |
119 | unsigned int conn_id; | |
120 | ||
121 | while (s.get_packet(packet,conn_id)) | |
122 | handle_packet(packet,s.get_connection(conn_id)); | |
123 | } | |
124 | s.cleanup(); | |
125 | } | |
126 | ||
127 | } |