prosody
239d4362a040
plugins/mod_posix.lua

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plugins/mod_posix.lua @ 1118:239d4362a040

mod_posix: Reload the config and reopen log files on SIGHUP
author Matthew Wild <mwild1@gmail.com>
date Tue, 05 May 2009 14:19:45 +0100
parent 1092:b547967d87fc
child 1119:61a011ebe243
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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fa45dfb27ee5 mod_posix: Check version of pposix
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1
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2 local want_pposix_version = "0.3.0";
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3
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4 local pposix = assert(require "util.pposix");
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5 if pposix._VERSION ~= want_pposix_version then module:log("warn", "Unknown version (%s) of binary pposix module, expected %s", tostring(pposix._VERSION), want_pposix_version); end
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6
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7 local signal = select(2, pcall(require, "util.signal"));
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8 if type(signal) == "string" then
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9 module:log("warn", "Couldn't load signal library, won't respond to SIGTERM");
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10 end
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11
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12 local config_get = require "core.configmanager".get;
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13 local logger_set = require "util.logger".setwriter;
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14
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15 module.host = "*"; -- we're a global module
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16
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17 -- Don't even think about it!
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18 module:add_event_hook("server-starting", function ()
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19 if pposix.getuid() == 0 and not config_get("*", "core", "run_as_root") then
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20 module:log("error", "Danger, Will Robinson! Prosody doesn't need to be run as root, so don't do it!");
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21 module:log("error", "For more information on running Prosody as root, see http://prosody.im/doc/root");
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22 _G.prosody_shutdown("Refusing to run as root");
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23 end
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24 end);
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25
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26 local pidfile_written;
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27
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28 local function remove_pidfile()
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29 if pidfile_written then
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30 os.remove(pidfile_written);
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31 pidfile_written = nil;
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32 end
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33 end
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34
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35 local function write_pidfile()
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36 if pidfile_written then
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37 remove_pidfile();
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38 end
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39 local pidfile = config_get("*", "core", "pidfile");
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40 if pidfile then
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41 local pf, err = io.open(pidfile, "w+");
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42 if not pf then
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43 module:log("error", "Couldn't write pidfile; %s", err);
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44 else
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45 pf:write(tostring(pposix.getpid()));
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46 pf:close();
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47 pidfile_written = pidfile;
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48 end
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49 end
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50 end
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51
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52 local syslog_opened
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53 function syslog_sink_maker(config)
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54 if not syslog_opened then
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55 pposix.syslog_open("prosody");
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56 syslog_opened = true;
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57 end
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58 local syslog, format = pposix.syslog_log, string.format;
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59 return function (name, level, message, ...)
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60 if ... then
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61 syslog(level, format(message, ...));
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62 else
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63 syslog(level, message);
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64 end
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65 end;
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66 end
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67 require "core.loggingmanager".register_sink_type("syslog", syslog_sink_maker);
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68
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69 if not config_get("*", "core", "no_daemonize") then
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70 local function daemonize_server()
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71 local ok, ret = pposix.daemonize();
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72 if not ok then
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73 module:log("error", "Failed to daemonize: %s", ret);
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74 elseif ret and ret > 0 then
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75 os.exit(0);
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76 else
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77 module:log("info", "Successfully daemonized to PID %d", pposix.getpid());
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78 write_pidfile();
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79 end
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80 end
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81 module:add_event_hook("server-starting", daemonize_server);
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82 else
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83 -- Not going to daemonize, so write the pid of this process
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84 write_pidfile();
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85 end
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86
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87 module:add_event_hook("server-stopped", remove_pidfile);
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88
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89 -- Set signal handlers
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90 if signal.signal then
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91 signal.signal("SIGTERM", function ()
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92 module:log("warn", "Received SIGTERM");
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93 _G.unlock_globals();
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94 _G.prosody_shutdown("Received SIGTERM");
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95 _G.lock_globals();
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96 end);
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97
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98 signal.signal("SIGHUP", function ()
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99 module:log("info", "Received SIGHUP");
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100 _G.prosody_reload_config();
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101 _G.prosody_reopen_logfiles();
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102 end);
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103 end