prosody
d46e9ad4fe8a
core/modulemanager.lua

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core/modulemanager.lua @ 4535:d46e9ad4fe8a

modulemanager: Cleanup some unused variables, imports, whitespace and add a comment.
author Matthew Wild <mwild1@gmail.com>
date Sun, 22 Jan 2012 18:49:49 +0000
parent 4534:7a0a31c4f6c5
child 4537:d8d257c13562
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 -- Prosody IM
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2 -- Copyright (C) 2008-2010 Matthew Wild
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3 -- Copyright (C) 2008-2010 Waqas Hussain
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4 --
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b1885732e979 GPL->MIT!
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5 -- This project is MIT/X11 licensed. Please see the
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6 -- COPYING file in the source package for more information.
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7 --
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8
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9 local logger = require "util.logger";
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10 local log = logger.init("modulemanager");
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11 local config = require "core.configmanager";
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12 local pluginloader = require "util.pluginloader";
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13
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14 local hosts = hosts;
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15 local prosody = prosody;
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16
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17 local loadfile, pcall, xpcall = loadfile, pcall, xpcall;
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18 local setmetatable, setfenv, getfenv = setmetatable, setfenv, getfenv;
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19 local pairs, ipairs = pairs, ipairs;
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20 local t_insert, t_concat = table.insert, table.concat;
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21 local type = type;
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22 local next = next;
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23 local rawget = rawget;
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24 local error = error;
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25 local tostring, tonumber = tostring, tonumber;
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26
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27 local debug_traceback = debug.traceback;
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28 local unpack, select = unpack, select;
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29 pcall = function(f, ...)
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30 local n = select("#", ...);
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31 local params = {...};
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32 return xpcall(function() return f(unpack(params, 1, n)) end, function(e) return tostring(e).."\n"..debug_traceback(); end);
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33 end
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34
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35 local array, set = require "util.array", require "util.set";
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36
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37 local autoload_modules = {"presence", "message", "iq", "offline"};
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38 local component_inheritable_modules = {"tls", "dialback", "iq"};
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39
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40 -- We need this to let modules access the real global namespace
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41 local _G = _G;
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42
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43 module "modulemanager"
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44
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45 local api = _G.require "core.moduleapi"; -- Module API container
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46
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47 -- [host] = { [module] = module_env }
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48 local modulemap = { ["*"] = {} };
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49
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50 local NULL = {};
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51
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52 -- Load modules when a host is activated
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53 function load_modules_for_host(host)
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54 local component = config.get(host, "core", "component_module");
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55
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56 local global_modules_enabled = config.get("*", "core", "modules_enabled");
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57 local global_modules_disabled = config.get("*", "core", "modules_disabled");
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58 local host_modules_enabled = config.get(host, "core", "modules_enabled");
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59 local host_modules_disabled = config.get(host, "core", "modules_disabled");
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60
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61 if host_modules_enabled == global_modules_enabled then host_modules_enabled = nil; end
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62 if host_modules_disabled == global_modules_disabled then host_modules_disabled = nil; end
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63
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64 local global_modules = set.new(autoload_modules) + set.new(global_modules_enabled) - set.new(global_modules_disabled);
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65 if component then
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66 global_modules = set.intersection(set.new(component_inheritable_modules), global_modules);
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67 end
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68 local modules = (global_modules + set.new(host_modules_enabled)) - set.new(host_modules_disabled);
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69
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70 -- COMPAT w/ pre 0.8
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71 if modules:contains("console") then
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72 log("error", "The mod_console plugin has been renamed to mod_admin_telnet. Please update your config.");
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73 modules:remove("console");
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74 modules:add("admin_telnet");
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75 end
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76
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77 if component then
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78 load(host, component);
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79 end
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80 for module in modules do
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81 load(host, module);
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82 end
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83 end
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84 prosody.events.add_handler("host-activated", load_modules_for_host);
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85
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86 --- Private helpers ---
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87
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88 local function do_unload_module(host, name)
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89 local mod = get_module(host, name);
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90 if not mod then return nil, "module-not-loaded"; end
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91
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92 if module_has_method(mod, "unload") then
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93 local ok, err = call_module_method(mod, "unload");
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94 if (not ok) and err then
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95 log("warn", "Non-fatal error unloading module '%s' on '%s': %s", name, host, err);
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96 end
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97 end
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98
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99 for handler, event in pairs(mod.module.event_handlers) do
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100 event.object.remove_handler(event.name, handler);
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101 end
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102
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103 if mod.module.items then -- remove items
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104 for key,t in pairs(mod.module.items) do
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105 for i = #t,1,-1 do
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106 local value = t[i];
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107 t[i] = nil;
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108 hosts[host].events.fire_event("item-removed/"..key, {source = mod.module, item = value});
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109 end
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110 end
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111 end
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diff changeset
112 modulemap[host][name] = nil;
670
d5cf10b7fc44 Modulemanager: Basic modules can now be unloaded correctly
Waqas Hussain <waqas20@gmail.com>
parents: 637
diff changeset
113 return true;
439
6608ad3a72f3 is_loaded() and incomplete unload() for modules
Matthew Wild <mwild1@gmail.com>
parents: 438
diff changeset
114 end
6608ad3a72f3 is_loaded() and incomplete unload() for modules
Matthew Wild <mwild1@gmail.com>
parents: 438
diff changeset
115
4532
d8dbf569766c modulemanager: Some reorganisation. Only external change is (should be) that module-unloaded and module-loaded are no longer fired when reloading a module, the new event module-reloaded is fired instead.
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parents: 4531
diff changeset
116 local function do_load_module(host, module_name)
d8dbf569766c modulemanager: Some reorganisation. Only external change is (should be) that module-unloaded and module-loaded are no longer fired when reloading a module, the new event module-reloaded is fired instead.
Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
117 if not (host and module_name) then
d8dbf569766c modulemanager: Some reorganisation. Only external change is (should be) that module-unloaded and module-loaded are no longer fired when reloading a module, the new event module-reloaded is fired instead.
Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
118 return nil, "insufficient-parameters";
d8dbf569766c modulemanager: Some reorganisation. Only external change is (should be) that module-unloaded and module-loaded are no longer fired when reloading a module, the new event module-reloaded is fired instead.
Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
119 elseif not hosts[host] then
d8dbf569766c modulemanager: Some reorganisation. Only external change is (should be) that module-unloaded and module-loaded are no longer fired when reloading a module, the new event module-reloaded is fired instead.
Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
120 return nil, "unknown-host";
d8dbf569766c modulemanager: Some reorganisation. Only external change is (should be) that module-unloaded and module-loaded are no longer fired when reloading a module, the new event module-reloaded is fired instead.
Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
121 end
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Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
122
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Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
123 if not modulemap[host] then
d8dbf569766c modulemanager: Some reorganisation. Only external change is (should be) that module-unloaded and module-loaded are no longer fired when reloading a module, the new event module-reloaded is fired instead.
Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
124 modulemap[host] = {};
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Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
125 end
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Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
126
d8dbf569766c modulemanager: Some reorganisation. Only external change is (should be) that module-unloaded and module-loaded are no longer fired when reloading a module, the new event module-reloaded is fired instead.
Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
127 if modulemap[host][module_name] then
d8dbf569766c modulemanager: Some reorganisation. Only external change is (should be) that module-unloaded and module-loaded are no longer fired when reloading a module, the new event module-reloaded is fired instead.
Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
128 log("warn", "%s is already loaded for %s, so not loading again", module_name, host);
d8dbf569766c modulemanager: Some reorganisation. Only external change is (should be) that module-unloaded and module-loaded are no longer fired when reloading a module, the new event module-reloaded is fired instead.
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parents: 4531
diff changeset
129 return nil, "module-already-loaded";
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parents: 4531
diff changeset
130 elseif modulemap["*"][module_name] then
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Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
131 return nil, "global-module-already-loaded";
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parents: 4531
diff changeset
132 end
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parents: 4531
diff changeset
133
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parents: 4531
diff changeset
134
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Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
135 local mod, err = pluginloader.load_code(module_name);
d8dbf569766c modulemanager: Some reorganisation. Only external change is (should be) that module-unloaded and module-loaded are no longer fired when reloading a module, the new event module-reloaded is fired instead.
Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
136 if not mod then
d8dbf569766c modulemanager: Some reorganisation. Only external change is (should be) that module-unloaded and module-loaded are no longer fired when reloading a module, the new event module-reloaded is fired instead.
Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
137 log("error", "Unable to load module '%s': %s", module_name or "nil", err or "nil");
d8dbf569766c modulemanager: Some reorganisation. Only external change is (should be) that module-unloaded and module-loaded are no longer fired when reloading a module, the new event module-reloaded is fired instead.
Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
138 return nil, err;
d8dbf569766c modulemanager: Some reorganisation. Only external change is (should be) that module-unloaded and module-loaded are no longer fired when reloading a module, the new event module-reloaded is fired instead.
Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
139 end
d8dbf569766c modulemanager: Some reorganisation. Only external change is (should be) that module-unloaded and module-loaded are no longer fired when reloading a module, the new event module-reloaded is fired instead.
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parents: 4531
diff changeset
140
d8dbf569766c modulemanager: Some reorganisation. Only external change is (should be) that module-unloaded and module-loaded are no longer fired when reloading a module, the new event module-reloaded is fired instead.
Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
141 local _log = logger.init(host..":"..module_name);
d8dbf569766c modulemanager: Some reorganisation. Only external change is (should be) that module-unloaded and module-loaded are no longer fired when reloading a module, the new event module-reloaded is fired instead.
Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
142 local api_instance = setmetatable({ name = module_name, host = host, path = err,
4534
7a0a31c4f6c5 modulemanager, moduleapi: Replace hooks multitable with an event_handlers map stored in individual modules. Also adds module:hook_object_event() to hook events on any util.events compatible object.
Matthew Wild <mwild1@gmail.com>
parents: 4533
diff changeset
143 _log = _log, log = function (self, ...) return _log(...); end, event_handlers = {} }
4532
d8dbf569766c modulemanager: Some reorganisation. Only external change is (should be) that module-unloaded and module-loaded are no longer fired when reloading a module, the new event module-reloaded is fired instead.
Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
144 , { __index = api });
d8dbf569766c modulemanager: Some reorganisation. Only external change is (should be) that module-unloaded and module-loaded are no longer fired when reloading a module, the new event module-reloaded is fired instead.
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parents: 4531
diff changeset
145
d8dbf569766c modulemanager: Some reorganisation. Only external change is (should be) that module-unloaded and module-loaded are no longer fired when reloading a module, the new event module-reloaded is fired instead.
Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
146 local pluginenv = setmetatable({ module = api_instance }, { __index = _G });
d8dbf569766c modulemanager: Some reorganisation. Only external change is (should be) that module-unloaded and module-loaded are no longer fired when reloading a module, the new event module-reloaded is fired instead.
Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
147 api_instance.environment = pluginenv;
d8dbf569766c modulemanager: Some reorganisation. Only external change is (should be) that module-unloaded and module-loaded are no longer fired when reloading a module, the new event module-reloaded is fired instead.
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parents: 4531
diff changeset
148
d8dbf569766c modulemanager: Some reorganisation. Only external change is (should be) that module-unloaded and module-loaded are no longer fired when reloading a module, the new event module-reloaded is fired instead.
Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
149 setfenv(mod, pluginenv);
d8dbf569766c modulemanager: Some reorganisation. Only external change is (should be) that module-unloaded and module-loaded are no longer fired when reloading a module, the new event module-reloaded is fired instead.
Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
150 hosts[host].modules = modulemap[host];
d8dbf569766c modulemanager: Some reorganisation. Only external change is (should be) that module-unloaded and module-loaded are no longer fired when reloading a module, the new event module-reloaded is fired instead.
Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
151 modulemap[host][module_name] = pluginenv;
d8dbf569766c modulemanager: Some reorganisation. Only external change is (should be) that module-unloaded and module-loaded are no longer fired when reloading a module, the new event module-reloaded is fired instead.
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parents: 4531
diff changeset
152
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Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
153 local ok, err = pcall(mod);
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Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
154 if ok then
d8dbf569766c modulemanager: Some reorganisation. Only external change is (should be) that module-unloaded and module-loaded are no longer fired when reloading a module, the new event module-reloaded is fired instead.
Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
155 -- Call module's "load"
d8dbf569766c modulemanager: Some reorganisation. Only external change is (should be) that module-unloaded and module-loaded are no longer fired when reloading a module, the new event module-reloaded is fired instead.
Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
156 if module_has_method(pluginenv, "load") then
d8dbf569766c modulemanager: Some reorganisation. Only external change is (should be) that module-unloaded and module-loaded are no longer fired when reloading a module, the new event module-reloaded is fired instead.
Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
157 ok, err = call_module_method(pluginenv, "load");
d8dbf569766c modulemanager: Some reorganisation. Only external change is (should be) that module-unloaded and module-loaded are no longer fired when reloading a module, the new event module-reloaded is fired instead.
Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
158 if not ok then
d8dbf569766c modulemanager: Some reorganisation. Only external change is (should be) that module-unloaded and module-loaded are no longer fired when reloading a module, the new event module-reloaded is fired instead.
Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
159 log("warn", "Error loading module '%s' on '%s': %s", module_name, host, err or "nil");
d8dbf569766c modulemanager: Some reorganisation. Only external change is (should be) that module-unloaded and module-loaded are no longer fired when reloading a module, the new event module-reloaded is fired instead.
Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
160 end
d8dbf569766c modulemanager: Some reorganisation. Only external change is (should be) that module-unloaded and module-loaded are no longer fired when reloading a module, the new event module-reloaded is fired instead.
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parents: 4531
diff changeset
161 end
d8dbf569766c modulemanager: Some reorganisation. Only external change is (should be) that module-unloaded and module-loaded are no longer fired when reloading a module, the new event module-reloaded is fired instead.
Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
162
d8dbf569766c modulemanager: Some reorganisation. Only external change is (should be) that module-unloaded and module-loaded are no longer fired when reloading a module, the new event module-reloaded is fired instead.
Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
163 -- Use modified host, if the module set one
d8dbf569766c modulemanager: Some reorganisation. Only external change is (should be) that module-unloaded and module-loaded are no longer fired when reloading a module, the new event module-reloaded is fired instead.
Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
164 if api_instance.host == "*" and host ~= "*" then
d8dbf569766c modulemanager: Some reorganisation. Only external change is (should be) that module-unloaded and module-loaded are no longer fired when reloading a module, the new event module-reloaded is fired instead.
Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
165 modulemap[host][module_name] = nil;
d8dbf569766c modulemanager: Some reorganisation. Only external change is (should be) that module-unloaded and module-loaded are no longer fired when reloading a module, the new event module-reloaded is fired instead.
Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
166 modulemap["*"][module_name] = pluginenv;
d8dbf569766c modulemanager: Some reorganisation. Only external change is (should be) that module-unloaded and module-loaded are no longer fired when reloading a module, the new event module-reloaded is fired instead.
Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
167 api_instance:set_global();
d8dbf569766c modulemanager: Some reorganisation. Only external change is (should be) that module-unloaded and module-loaded are no longer fired when reloading a module, the new event module-reloaded is fired instead.
Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
168 end
d8dbf569766c modulemanager: Some reorganisation. Only external change is (should be) that module-unloaded and module-loaded are no longer fired when reloading a module, the new event module-reloaded is fired instead.
Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
169 else
d8dbf569766c modulemanager: Some reorganisation. Only external change is (should be) that module-unloaded and module-loaded are no longer fired when reloading a module, the new event module-reloaded is fired instead.
Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
170 log("error", "Error initializing module '%s' on '%s': %s", module_name, host, err or "nil");
d8dbf569766c modulemanager: Some reorganisation. Only external change is (should be) that module-unloaded and module-loaded are no longer fired when reloading a module, the new event module-reloaded is fired instead.
Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
171 do_unload_module(api_instance.host, module_name); -- Ignore error, module may be partially-loaded
d8dbf569766c modulemanager: Some reorganisation. Only external change is (should be) that module-unloaded and module-loaded are no longer fired when reloading a module, the new event module-reloaded is fired instead.
Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
172 end
d8dbf569766c modulemanager: Some reorganisation. Only external change is (should be) that module-unloaded and module-loaded are no longer fired when reloading a module, the new event module-reloaded is fired instead.
Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
173 return ok and mod, err;
d8dbf569766c modulemanager: Some reorganisation. Only external change is (should be) that module-unloaded and module-loaded are no longer fired when reloading a module, the new event module-reloaded is fired instead.
Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
174 end
d8dbf569766c modulemanager: Some reorganisation. Only external change is (should be) that module-unloaded and module-loaded are no longer fired when reloading a module, the new event module-reloaded is fired instead.
Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
175
d8dbf569766c modulemanager: Some reorganisation. Only external change is (should be) that module-unloaded and module-loaded are no longer fired when reloading a module, the new event module-reloaded is fired instead.
Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
176 local function do_reload_module(host, name)
745
5a343599cd3e core.modulemanager: Some refactoring to make upcoming changes a little easier
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parents: 733
diff changeset
177 local mod = get_module(host, name);
710
56f6c115bc69 modulemanager: Added reload support, with callbacks for saving and restoring state
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parents: 709
diff changeset
178 if not mod then return nil, "module-not-loaded"; end
56f6c115bc69 modulemanager: Added reload support, with callbacks for saving and restoring state
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parents: 709
diff changeset
179
1360
857034905016 modulemanager: Changed to use util.pluginloader
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parents: 1346
diff changeset
180 local _mod, err = pluginloader.load_code(name); -- checking for syntax errors
713
2afd6d9e21cd modulemanager: Check for syntax errors before reloading a module
Waqas Hussain <waqas20@gmail.com>
parents: 710
diff changeset
181 if not _mod then
1386
9132f16666e4 modulemanager: Fix copy/paste error, should be name instead of module_name
Matthew Wild <mwild1@gmail.com>
parents: 1378
diff changeset
182 log("error", "Unable to load module '%s': %s", name or "nil", err or "nil");
713
2afd6d9e21cd modulemanager: Check for syntax errors before reloading a module
Waqas Hussain <waqas20@gmail.com>
parents: 710
diff changeset
183 return nil, err;
2afd6d9e21cd modulemanager: Check for syntax errors before reloading a module
Waqas Hussain <waqas20@gmail.com>
parents: 710
diff changeset
184 end
2afd6d9e21cd modulemanager: Check for syntax errors before reloading a module
Waqas Hussain <waqas20@gmail.com>
parents: 710
diff changeset
185
710
56f6c115bc69 modulemanager: Added reload support, with callbacks for saving and restoring state
Waqas Hussain <waqas20@gmail.com>
parents: 709
diff changeset
186 local saved;
745
5a343599cd3e core.modulemanager: Some refactoring to make upcoming changes a little easier
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parents: 733
diff changeset
187 if module_has_method(mod, "save") then
5a343599cd3e core.modulemanager: Some refactoring to make upcoming changes a little easier
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parents: 733
diff changeset
188 local ok, ret, err = call_module_method(mod, "save");
5a343599cd3e core.modulemanager: Some refactoring to make upcoming changes a little easier
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parents: 733
diff changeset
189 if ok then
5a343599cd3e core.modulemanager: Some refactoring to make upcoming changes a little easier
Matthew Wild <mwild1@gmail.com>
parents: 733
diff changeset
190 saved = ret;
710
56f6c115bc69 modulemanager: Added reload support, with callbacks for saving and restoring state
Waqas Hussain <waqas20@gmail.com>
parents: 709
diff changeset
191 else
4383
718445c040c4 modulemanager: Fix undefined global access in handling of module.save error handling.
Waqas Hussain <waqas20@gmail.com>
parents: 4381
diff changeset
192 log("warn", "Error saving module '%s:%s' state: %s", host, name, ret);
745
5a343599cd3e core.modulemanager: Some refactoring to make upcoming changes a little easier
Matthew Wild <mwild1@gmail.com>
parents: 733
diff changeset
193 if not config.get(host, "core", "force_module_reload") then
5a343599cd3e core.modulemanager: Some refactoring to make upcoming changes a little easier
Matthew Wild <mwild1@gmail.com>
parents: 733
diff changeset
194 log("warn", "Aborting reload due to error, set force_module_reload to ignore this");
5a343599cd3e core.modulemanager: Some refactoring to make upcoming changes a little easier
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parents: 733
diff changeset
195 return nil, "save-state-failed";
5a343599cd3e core.modulemanager: Some refactoring to make upcoming changes a little easier
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parents: 733
diff changeset
196 else
5a343599cd3e core.modulemanager: Some refactoring to make upcoming changes a little easier
Matthew Wild <mwild1@gmail.com>
parents: 733
diff changeset
197 log("warn", "Continuing with reload (using the force)");
5a343599cd3e core.modulemanager: Some refactoring to make upcoming changes a little easier
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parents: 733
diff changeset
198 end
710
56f6c115bc69 modulemanager: Added reload support, with callbacks for saving and restoring state
Waqas Hussain <waqas20@gmail.com>
parents: 709
diff changeset
199 end
56f6c115bc69 modulemanager: Added reload support, with callbacks for saving and restoring state
Waqas Hussain <waqas20@gmail.com>
parents: 709
diff changeset
200 end
56f6c115bc69 modulemanager: Added reload support, with callbacks for saving and restoring state
Waqas Hussain <waqas20@gmail.com>
parents: 709
diff changeset
201
4532
d8dbf569766c modulemanager: Some reorganisation. Only external change is (should be) that module-unloaded and module-loaded are no longer fired when reloading a module, the new event module-reloaded is fired instead.
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parents: 4531
diff changeset
202 do_unload_module(host, name);
d8dbf569766c modulemanager: Some reorganisation. Only external change is (should be) that module-unloaded and module-loaded are no longer fired when reloading a module, the new event module-reloaded is fired instead.
Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
203 local ok, err = do_load_module(host, name);
745
5a343599cd3e core.modulemanager: Some refactoring to make upcoming changes a little easier
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parents: 733
diff changeset
204 if ok then
5a343599cd3e core.modulemanager: Some refactoring to make upcoming changes a little easier
Matthew Wild <mwild1@gmail.com>
parents: 733
diff changeset
205 mod = get_module(host, name);
5a343599cd3e core.modulemanager: Some refactoring to make upcoming changes a little easier
Matthew Wild <mwild1@gmail.com>
parents: 733
diff changeset
206 if module_has_method(mod, "restore") then
5a343599cd3e core.modulemanager: Some refactoring to make upcoming changes a little easier
Matthew Wild <mwild1@gmail.com>
parents: 733
diff changeset
207 local ok, err = call_module_method(mod, "restore", saved or {})
710
56f6c115bc69 modulemanager: Added reload support, with callbacks for saving and restoring state
Waqas Hussain <waqas20@gmail.com>
parents: 709
diff changeset
208 if (not ok) and err then
745
5a343599cd3e core.modulemanager: Some refactoring to make upcoming changes a little easier
Matthew Wild <mwild1@gmail.com>
parents: 733
diff changeset
209 log("warn", "Error restoring module '%s' from '%s': %s", name, host, err);
710
56f6c115bc69 modulemanager: Added reload support, with callbacks for saving and restoring state
Waqas Hussain <waqas20@gmail.com>
parents: 709
diff changeset
210 end
56f6c115bc69 modulemanager: Added reload support, with callbacks for saving and restoring state
Waqas Hussain <waqas20@gmail.com>
parents: 709
diff changeset
211 end
4532
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212 end
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213 return ok and mod, err;
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214 end
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215
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216 --- Public API ---
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217
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218 -- Load a module and fire module-loaded event
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219 function load(host, name)
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220 local mod, err = do_load_module(host, name);
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221 if mod then
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222 (hosts[mod.host] or prosody).events.fire_event("module-loaded", { module = module_name, host = host });
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223 end
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224 return mod, err;
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225 end
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226
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227 -- Unload a module and fire module-unloaded
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228 function unload(host, name)
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229 local ok, err = do_unload_module(host, name);
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230 if ok then
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231 (hosts[host] or prosody).events.fire_event("module-unloaded", { module = name, host = host });
710
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232 end
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233 return ok, err;
710
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234 end
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235
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236 function reload(host, name)
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237 local ok, err = do_reload_module(host, name);
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238 if ok then
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239 (hosts[host] or prosody).events.fire_event("module-reloaded", { module = name, host = host });
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240 elseif not is_loaded(host, name) then
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241 (hosts[host] or prosody).events.fire_event("module-unloaded", { module = name, host = host });
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242 end
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243 return ok, err;
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244 end
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245
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246 function get_module(host, name)
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247 return modulemap[host] and modulemap[host][name];
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248 end
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249
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250 function get_modules(host)
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251 return modulemap[host];
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252 end
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253
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254 function is_loaded(host, name)
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255 return modulemap[host] and modulemap[host][name] and true;
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256 end
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257
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258 function module_has_method(module, method)
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259 return type(module.module[method]) == "function";
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260 end
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261
747
40837f3422ab modulemanager: Add get_host_type() API method, and fix up call_module_method to work properly
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parents: 746
diff changeset
262 function call_module_method(module, method, ...)
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parents: 2270
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263 if module_has_method(module, method) then
748
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parents: 747
diff changeset
264 local f = module.module[method];
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265 return pcall(f, ...);
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diff changeset
266 else
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267 return false, "no-such-method";
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268 end
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269 end
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270
39
89877d61ac51 Add support for arbitrary events and event hooks
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diff changeset
271 return _M;