src/metaproxy_prog.cpp

   1 /* This file is part of Metaproxy.
   2    Copyright (C) 2005-2010 Index Data
   3
   4 Metaproxy is free software; you can redistribute it and/or modify it under
   5 the terms of the GNU General Public License as published by the Free
   6 Software Foundation; either version 2, or (at your option) any later
   7 version.
   8
   9 Metaproxy is distributed in the hope that it will be useful, but WITHOUT ANY
  10 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12 for more details.
  13
  14 You should have received a copy of the GNU General Public License
  15 along with this program; if not, write to the Free Software
  16 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  17 */
  18
  19 #include "config.hpp"
  20
  21 #include <yaz/log.h>
  22 #include <yaz/options.h>
  23 #include <yaz/daemon.h>
  24
  25 #include <yaz/sc.h>
  26 #include <iostream>
  27 #include <stdexcept>
  28 #include <libxml/xinclude.h>
  29
  30 #include <metaproxy/filter.hpp>
  31 #include <metaproxy/package.hpp>
  32 #include "router_flexml.hpp"
  33 #include "factory_static.hpp"
  34
  35 #if HAVE_UNISTD_H
  36 #include <unistd.h>
  37 #endif
  38 #include <signal.h>
  39 #ifdef WIN32
  40 #include <direct.h>
  41 #include <io.h>
  42 #include <process.h>
  43 #endif
  44
  45 namespace mp = metaproxy_1;
  46
  47 mp::RouterFleXML *routerp = 0;
  48
  49 #if HAVE_UNISTD_H
  50 static pid_t process_group = 0;
  51
  52 static void sig_term_handler(int s)
  53 {
  54     kill(-process_group, SIGTERM); /* kill all children processes as well */
  55     exit(0);
  56 }
  57 #endif
  58
  59 static void handler(void *data)
  60 {
  61     routerp = (mp::RouterFleXML*) data;
  62
  63 #if HAVE_UNISTD_H
  64     /* make the current working process group leader */
  65     setpgid(0, 0);
  66     process_group = getpgid(0); // save process group ID
  67
  68     signal(SIGTERM, sig_term_handler);
  69 #endif
  70
  71     mp::Package pack;
  72     pack.router(*routerp).move(); /* should never exit */
  73 }
  74
  75 static int sc_main(
  76     yaz_sc_t s,
  77     int argc, char **argv)
  78 {
  79     try
  80     {
  81         const char *fname = 0;
  82         int ret;
  83         char *arg;
  84         unsigned mode = 0;
  85         const char *pidfile = 0;
  86         const char *uid = 0;
  87
  88         while ((ret = options("c{config}:Dh{help}l:p:u:V{version}w:X",
  89                               argv, argc, &arg)) != -2)
  90         {
  91             switch (ret)
  92             {
  93             case 'c':
  94                 fname = arg;
  95                 break;
  96             case 'D':
  97                 mode = YAZ_DAEMON_FORK|YAZ_DAEMON_KEEPALIVE;
  98                 break;
  99             case 'h':
 100                 std::cerr << "metaproxy\n"
 101                     " -h|--help     help\n"
 102                     " -V|--version  version\n"
 103                     " -c|--config f config filename\n"
 104                     " -D            daemon and keepalive operation\n"
 105                     " -l f          log file f\n"
 106                     " -p f          pid file f\n"
 107                     " -u id         change uid to id\n"
 108                     " -w dir        changes working directory to dir\n"
 109                     " -X            debug mode (no fork/daemon mode)\n"
 110 #ifdef WIN32
 111                     " -install      install windows service\n"
 112                     " -remove       remove windows service\n"
 113 #endif
 114
 115                           << std::endl;
 116                 break;
 117             case 'l':
 118                 yaz_log_init_file(arg);
 119                 break;
 120             case 'p':
 121                 pidfile = arg;
 122                 break;
 123             case 'u':
 124                 uid = arg;
 125                 break;
 126             case 'V':
 127                 std::cout << VERSION;
 128 #ifdef VERSION_SHA1
 129                 std::cout << " " VERSION_SHA1;
 130 #endif
 131                 std::cout << "\n";
 132                 return 0;
 133                 break;
 134             case 'w':
 135                 if (
 136 #ifdef WIN32
 137                     _chdir(arg)
 138 #else
 139                     chdir(arg)
 140 #endif
 141                    )
 142                 {
 143                     std::cerr << "chdir " << arg << " failed" << std::endl;
 144                     return 1;
 145                 }
 146             case 'X':
 147                 mode = YAZ_DAEMON_DEBUG;
 148                 break;
 149             case -1:
 150                 std::cerr << "bad option: " << arg << std::endl;
 151                 return 1;
 152             }
 153         }
 154         if (!fname)
 155         {
 156             std::cerr << "No configuration given; use -h for help\n";
 157             return 1;
 158         }
 159
 160         yaz_log(YLOG_LOG, "Metaproxy start " VERSION
 161 #ifdef VERSION_SHA1
 162                 " " VERSION_SHA1
 163 #endif
 164             );
 165
 166         xmlDocPtr doc = xmlReadFile(fname,
 167                                     NULL,
 168                                     XML_PARSE_XINCLUDE + XML_PARSE_NOBLANKS
 169                                     + XML_PARSE_NSCLEAN + XML_PARSE_NONET );
 170
 171         if (!doc)
 172         {
 173             yaz_log (YLOG_FATAL,"XML parsing failed");
 174             return 1;
 175         }
 176         // and perform Xinclude then
 177         int r = xmlXIncludeProcess(doc);
 178         if (r == -1)
 179         {
 180             yaz_log(YLOG_FATAL, "XInclude processing failed");
 181             return 1;
 182         }
 183         WRBUF base_path = wrbuf_alloc();
 184         const char *last_p = strrchr(fname,
 185 #ifdef WIN32
 186                                      '\\'
 187 #else
 188                                      '/'
 189 #endif
 190             );
 191         if (last_p)
 192             wrbuf_write(base_path, fname, last_p - fname);
 193
 194         mp::FactoryStatic factory;
 195         mp::RouterFleXML *router =
 196             new mp::RouterFleXML(doc, factory, false, wrbuf_cstr(base_path));
 197         wrbuf_destroy(base_path);
 198
 199         yaz_sc_running(s);
 200
 201         yaz_daemon("metaproxy", mode, handler, router, pidfile, uid);
 202     }
 203     catch (std::logic_error &e) {
 204         yaz_log (YLOG_FATAL,"std::logic error: %s" , e.what() );
 205         return 1;
 206     }
 207     catch (std::runtime_error &e) {
 208         yaz_log(YLOG_FATAL, "std::runtime error: %s" , e.what() );
 209         return 1;
 210     }
 211     catch ( ... ) {
 212         yaz_log(YLOG_FATAL, "Unknown Exception");
 213         return 1;
 214     }
 215     return 0;
 216 }
 217
 218 static void sc_stop(yaz_sc_t s)
 219 {
 220     return;
 221 }
 222
 223 int main(int argc, char **argv)
 224 {
 225     int ret;
 226     yaz_sc_t s = yaz_sc_create("metaproxy", "metaproxy");
 227
 228     ret = yaz_sc_program(s, argc, argv, sc_main, sc_stop);
 229
 230     yaz_sc_destroy(&s);
 231     exit(ret);
 232 }
 233
 234
 235
 236 /*
 237  * Local variables:
 238  * c-basic-offset: 4
 239  * c-file-style: "Stroustrup"
 240  * indent-tabs-mode: nil
 241  * End:
 242  * vim: shiftwidth=4 tabstop=8 expandtab
 243  */
 244