src/metaproxy_prog.cpp

   1 /* This file is part of Metaproxy.
   2    Copyright (C) 2005-2011 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_debug(void *data)
  60 {
  61 #if HAVE_UNISTD_H
  62     process_group = getpgid(0); // save process group ID
  63
  64     signal(SIGTERM, sig_term_handler);
  65 #endif
  66     routerp = (mp::RouterFleXML*) data;
  67     routerp->start();
  68
  69     mp::Package pack;
  70     pack.router(*routerp).move(); /* should never exit */
  71 }
  72
  73 static void handler_normal(void *data)
  74 {
  75 #if HAVE_UNISTD_H
  76     /* make the current working process group leader */
  77     setpgid(0, 0);
  78 #endif
  79     handler_debug(data);
  80 }
  81
  82 static int sc_main(
  83     yaz_sc_t s,
  84     int argc, char **argv)
  85 {
  86     try
  87     {
  88         const char *fname = 0;
  89         int ret;
  90         char *arg;
  91         unsigned mode = 0;
  92         const char *pidfile = 0;
  93         const char *uid = 0;
  94
  95         while ((ret = options("c{config}:Dh{help}l:p:u:V{version}w:X",
  96                               argv, argc, &arg)) != -2)
  97         {
  98             switch (ret)
  99             {
 100             case 'c':
 101                 fname = arg;
 102                 break;
 103             case 'D':
 104                 mode = YAZ_DAEMON_FORK|YAZ_DAEMON_KEEPALIVE;
 105                 break;
 106             case 'h':
 107                 std::cerr << "metaproxy\n"
 108                     " -h|--help     help\n"
 109                     " -V|--version  version\n"
 110                     " -c|--config f config filename\n"
 111                     " -D            daemon and keepalive operation\n"
 112                     " -l f          log file f\n"
 113                     " -p f          pid file f\n"
 114                     " -u id         change uid to id\n"
 115                     " -w dir        changes working directory to dir\n"
 116                     " -X            debug mode (no fork/daemon mode)\n"
 117 #ifdef WIN32
 118                     " -install      install windows service\n"
 119                     " -remove       remove windows service\n"
 120 #endif
 121
 122                           << std::endl;
 123                 break;
 124             case 'l':
 125                 yaz_log_init_file(arg);
 126                 break;
 127             case 'p':
 128                 pidfile = arg;
 129                 break;
 130             case 'u':
 131                 uid = arg;
 132                 break;
 133             case 'V':
 134                 std::cout << VERSION;
 135 #ifdef VERSION_SHA1
 136                 std::cout << " " VERSION_SHA1;
 137 #endif
 138                 std::cout << "\n";
 139                 return 0;
 140                 break;
 141             case 'w':
 142                 if (
 143 #ifdef WIN32
 144                     _chdir(arg)
 145 #else
 146                     chdir(arg)
 147 #endif
 148                    )
 149                 {
 150                     std::cerr << "chdir " << arg << " failed" << std::endl;
 151                     return 1;
 152                 }
 153             case 'X':
 154                 mode = YAZ_DAEMON_DEBUG;
 155                 break;
 156             case -1:
 157                 std::cerr << "bad option: " << arg << std::endl;
 158                 return 1;
 159             }
 160         }
 161         if (!fname)
 162         {
 163             std::cerr << "No configuration given; use -h for help\n";
 164             return 1;
 165         }
 166
 167         yaz_log(YLOG_LOG, "Metaproxy start " VERSION
 168 #ifdef VERSION_SHA1
 169                 " " VERSION_SHA1
 170 #endif
 171             );
 172
 173         xmlDocPtr doc = xmlReadFile(fname,
 174                                     NULL,
 175                                     XML_PARSE_XINCLUDE + XML_PARSE_NOBLANKS
 176                                     + XML_PARSE_NSCLEAN + XML_PARSE_NONET );
 177
 178         if (!doc)
 179         {
 180             yaz_log (YLOG_FATAL,"XML parsing failed");
 181             return 1;
 182         }
 183         // and perform Xinclude then
 184         int r = xmlXIncludeProcess(doc);
 185         if (r == -1)
 186         {
 187             yaz_log(YLOG_FATAL, "XInclude processing failed");
 188             return 1;
 189         }
 190         WRBUF base_path = wrbuf_alloc();
 191         const char *last_p = strrchr(fname,
 192 #ifdef WIN32
 193                                      '\\'
 194 #else
 195                                      '/'
 196 #endif
 197             );
 198         if (last_p)
 199             wrbuf_write(base_path, fname, last_p - fname);
 200
 201         mp::FactoryStatic factory;
 202         mp::RouterFleXML *router =
 203             new mp::RouterFleXML(doc, factory, false, wrbuf_cstr(base_path));
 204         wrbuf_destroy(base_path);
 205
 206         yaz_sc_running(s);
 207
 208         yaz_daemon("metaproxy", mode, mode == YAZ_DAEMON_DEBUG ?
 209                    handler_debug : handler_normal, router, pidfile, uid);
 210     }
 211     catch (std::logic_error &e) {
 212         yaz_log (YLOG_FATAL,"std::logic error: %s" , e.what() );
 213         return 1;
 214     }
 215     catch (std::runtime_error &e) {
 216         yaz_log(YLOG_FATAL, "std::runtime error: %s" , e.what() );
 217         return 1;
 218     }
 219     catch ( ... ) {
 220         yaz_log(YLOG_FATAL, "Unknown Exception");
 221         return 1;
 222     }
 223     return 0;
 224 }
 225
 226 static void sc_stop(yaz_sc_t s)
 227 {
 228     return;
 229 }
 230
 231 int main(int argc, char **argv)
 232 {
 233     int ret;
 234     yaz_sc_t s = yaz_sc_create("metaproxy", "metaproxy");
 235
 236     ret = yaz_sc_program(s, argc, argv, sc_main, sc_stop);
 237
 238     yaz_sc_destroy(&s);
 239     exit(ret);
 240 }
 241
 242
 243
 244 /*
 245  * Local variables:
 246  * c-basic-offset: 4
 247  * c-file-style: "Stroustrup"
 248  * indent-tabs-mode: nil
 249  * End:
 250  * vim: shiftwidth=4 tabstop=8 expandtab
 251  */
 252