plugins/mod_posix.lua

   1
   2 local pposix = assert(require "util.pposix");
   3
   4 local config_get = require "core.configmanager".get;
   5 local logger_set = require "util.logger".setwriter;
   6
   7 module.host = "*"; -- we're a global module
   8
   9 if not config_get("*", "core", "no_daemonize") then
  10         local function daemonize_server()
  11                 local logwriter;
  12
  13                 local logfilename = config_get("*", "core", "log");
  14                 if logfilename then
  15                         local logfile = io.open(logfilename, "a+");
  16                         if logfile then
  17                                 local write, format, flush = logfile.write, string.format, logfile.flush;
  18                                 logwriter = function (name, level, message, ...)
  19                                                         if ... then
  20                                                                 write(logfile, name, "\t", level, "\t", format(message, ...), "\n");
  21                                                         else
  22                                                                 write(logfile, name, "\t" , level, "\t", message, "\n");
  23                                                         end
  24                                                         flush(logfile);
  25                                                 end;
  26                         end
  27                 else
  28                         log("debug", "No logging specified, will continue with default");
  29                 end
  30
  31                 local ok, ret = pposix.daemonize();
  32                 if not ok then
  33                         log("error", "Failed to daemonize: %s", ret);
  34                 elseif ret and ret > 0 then
  35                         log("info", "Daemonized to pid %d", ret);
  36                         os.exit(0);
  37                 else
  38                         if logwriter then
  39                                 local ok, ret = logger_set(logwriter);
  40                                 if not ok then
  41                                         log("error", "Couldn't set new log output: %s", ret);
  42                                 end
  43                         end
  44                         log("info", "Successfully daemonized");
  45                 end
  46         end
  47         module:add_event_hook("server-starting", daemonize_server);
  48 end