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     routerp->start();
  71
  72     mp::Package pack;
  73     pack.router(*routerp).move(); /* should never exit */
  74 }
  75
  76 static int sc_main(
  77     yaz_sc_t s,
  78     int argc, char **argv)
  79 {
  80     try
  81     {
  82         const char *fname = 0;
  83         int ret;
  84         char *arg;
  85         unsigned mode = 0;
  86         const char *pidfile = 0;
  87         const char *uid = 0;
  88
  89         while ((ret = options("c{config}:Dh{help}l:p:u:V{version}w:X",
  90                               argv, argc, &arg)) != -2)
  91         {
  92             switch (ret)
  93             {
  94             case 'c':
  95                 fname = arg;
  96                 break;
  97             case 'D':
  98                 mode = YAZ_DAEMON_FORK|YAZ_DAEMON_KEEPALIVE;
  99                 break;
 100             case 'h':
 101                 std::cerr << "metaproxy\n"
 102                     " -h|--help     help\n"
 103                     " -V|--version  version\n"
 104                     " -c|--config f config filename\n"
 105                     " -D            daemon and keepalive operation\n"
 106                     " -l f          log file f\n"
 107                     " -p f          pid file f\n"
 108                     " -u id         change uid to id\n"
 109                     " -w dir        changes working directory to dir\n"
 110                     " -X            debug mode (no fork/daemon mode)\n"
 111 #ifdef WIN32
 112                     " -install      install windows service\n"
 113                     " -remove       remove windows service\n"
 114 #endif
 115
 116                           << std::endl;
 117                 break;
 118             case 'l':
 119                 yaz_log_init_file(arg);
 120                 break;
 121             case 'p':
 122                 pidfile = arg;
 123                 break;
 124             case 'u':
 125                 uid = arg;
 126                 break;
 127             case 'V':
 128                 std::cout << VERSION;
 129 #ifdef VERSION_SHA1
 130                 std::cout << " " VERSION_SHA1;
 131 #endif
 132                 std::cout << "\n";
 133                 return 0;
 134                 break;
 135             case 'w':
 136                 if (
 137 #ifdef WIN32
 138                     _chdir(arg)
 139 #else
 140                     chdir(arg)
 141 #endif
 142                    )
 143                 {
 144                     std::cerr << "chdir " << arg << " failed" << std::endl;
 145                     return 1;
 146                 }
 147             case 'X':
 148                 mode = YAZ_DAEMON_DEBUG;
 149                 break;
 150             case -1:
 151                 std::cerr << "bad option: " << arg << std::endl;
 152                 return 1;
 153             }
 154         }
 155         if (!fname)
 156         {
 157             std::cerr << "No configuration given; use -h for help\n";
 158             return 1;
 159         }
 160
 161         yaz_log(YLOG_LOG, "Metaproxy start " VERSION
 162 #ifdef VERSION_SHA1
 163                 " " VERSION_SHA1
 164 #endif
 165             );
 166
 167         xmlDocPtr doc = xmlReadFile(fname,
 168                                     NULL,
 169                                     XML_PARSE_XINCLUDE + XML_PARSE_NOBLANKS
 170                                     + XML_PARSE_NSCLEAN + XML_PARSE_NONET );
 171
 172         if (!doc)
 173         {
 174             yaz_log (YLOG_FATAL,"XML parsing failed");
 175             return 1;
 176         }
 177         // and perform Xinclude then
 178         int r = xmlXIncludeProcess(doc);
 179         if (r == -1)
 180         {
 181             yaz_log(YLOG_FATAL, "XInclude processing failed");
 182             return 1;
 183         }
 184         WRBUF base_path = wrbuf_alloc();
 185         const char *last_p = strrchr(fname,
 186 #ifdef WIN32
 187                                      '\\'
 188 #else
 189                                      '/'
 190 #endif
 191             );
 192         if (last_p)
 193             wrbuf_write(base_path, fname, last_p - fname);
 194
 195         mp::FactoryStatic factory;
 196         mp::RouterFleXML *router =
 197             new mp::RouterFleXML(doc, factory, false, wrbuf_cstr(base_path));
 198         wrbuf_destroy(base_path);
 199
 200         yaz_sc_running(s);
 201
 202         yaz_daemon("metaproxy", mode, handler, router, pidfile, uid);
 203     }
 204     catch (std::logic_error &e) {
 205         yaz_log (YLOG_FATAL,"std::logic error: %s" , e.what() );
 206         return 1;
 207     }
 208     catch (std::runtime_error &e) {
 209         yaz_log(YLOG_FATAL, "std::runtime error: %s" , e.what() );
 210         return 1;
 211     }
 212     catch ( ... ) {
 213         yaz_log(YLOG_FATAL, "Unknown Exception");
 214         return 1;
 215     }
 216     return 0;
 217 }
 218
 219 static void sc_stop(yaz_sc_t s)
 220 {
 221     return;
 222 }
 223
 224 int main(int argc, char **argv)
 225 {
 226     int ret;
 227     yaz_sc_t s = yaz_sc_create("metaproxy", "metaproxy");
 228
 229     ret = yaz_sc_program(s, argc, argv, sc_main, sc_stop);
 230
 231     yaz_sc_destroy(&s);
 232     exit(ret);
 233 }
 234
 235
 236
 237 /*
 238  * Local variables:
 239  * c-basic-offset: 4
 240  * c-file-style: "Stroustrup"
 241  * indent-tabs-mode: nil
 242  * End:
 243  * vim: shiftwidth=4 tabstop=8 expandtab
 244  */
 245