prosody
bf107d9d4962
core/modulemanager.lua

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core/modulemanager.lua @ 4792:bf107d9d4962

net.connlisteners: Add COMPAT stub, use portmanager!
author Matthew Wild <mwild1@gmail.com>
date Sat, 28 Apr 2012 23:13:49 +0100
parent 4776:dbe9d75c0452
child 4801:83cedf648b46
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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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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ec03f6968fa8 Added function add_feature to modules API (for adding disco features)
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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 pcall, xpcall = pcall, xpcall;
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18 local setmetatable, rawget, setfenv = setmetatable, rawget, setfenv;
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19 local pairs, type, tostring = pairs, type, tostring;
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20
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21 local debug_traceback = debug.traceback;
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22 local unpack, select = unpack, select;
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23 pcall = function(f, ...)
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24 local n = select("#", ...);
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25 local params = {...};
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26 return xpcall(function() return f(unpack(params, 1, n)) end, function(e) return tostring(e).."\n"..debug_traceback(); end);
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27 end
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29 local set = require "util.set";
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31 local autoload_modules = {"presence", "message", "iq", "offline", "c2s", "s2s"};
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32 local component_inheritable_modules = {"tls", "dialback", "iq"};
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33
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34 -- We need this to let modules access the real global namespace
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35 local _G = _G;
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36
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37 module "modulemanager"
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38
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39 local api = _G.require "core.moduleapi"; -- Module API container
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41 -- [host] = { [module] = module_env }
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42 local modulemap = { ["*"] = {} };
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43
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44 -- Load modules when a host is activated
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45 function load_modules_for_host(host)
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46 local component = config.get(host, "core", "component_module");
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47
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48 local global_modules_enabled = config.get("*", "core", "modules_enabled");
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49 local global_modules_disabled = config.get("*", "core", "modules_disabled");
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50 local host_modules_enabled = config.get(host, "core", "modules_enabled");
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51 local host_modules_disabled = config.get(host, "core", "modules_disabled");
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52
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53 if host_modules_enabled == global_modules_enabled then host_modules_enabled = nil; end
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54 if host_modules_disabled == global_modules_disabled then host_modules_disabled = nil; end
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56 local global_modules = set.new(autoload_modules) + set.new(global_modules_enabled) - set.new(global_modules_disabled);
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57 if component then
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58 global_modules = set.intersection(set.new(component_inheritable_modules), global_modules);
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59 end
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60 local modules = (global_modules + set.new(host_modules_enabled)) - set.new(host_modules_disabled);
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61
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62 -- COMPAT w/ pre 0.8
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63 if modules:contains("console") then
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64 log("error", "The mod_console plugin has been renamed to mod_admin_telnet. Please update your config.");
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65 modules:remove("console");
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66 modules:add("admin_telnet");
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67 end
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68
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69 if component then
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70 load(host, component);
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71 end
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72 for module in modules do
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73 load(host, module);
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74 end
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75 end
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76 prosody.events.add_handler("host-activated", load_modules_for_host);
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77 prosody.events.add_handler("host-deactivated", function (host)
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78 modulemap[host] = nil;
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79 end);
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80
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81 --- Private helpers ---
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82
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83 local function do_unload_module(host, name)
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84 local mod = get_module(host, name);
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85 if not mod then return nil, "module-not-loaded"; end
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86
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87 if module_has_method(mod, "unload") then
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88 local ok, err = call_module_method(mod, "unload");
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89 if (not ok) and err then
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90 log("warn", "Non-fatal error unloading module '%s' on '%s': %s", name, host, err);
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91 end
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92 end
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93
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94 for handler, event in pairs(mod.module.event_handlers) do
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95 event.object.remove_handler(event.name, handler);
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96 end
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97
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98 if mod.module.items then -- remove items
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99 local events = (host == "*" and prosody.events) or hosts[host].events;
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100 for key,t in pairs(mod.module.items) do
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101 for i = #t,1,-1 do
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102 local value = t[i];
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103 t[i] = nil;
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104 events.fire_event("item-removed/"..key, {source = mod.module, item = value});
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105 end
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106 end
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107 end
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108 mod.module.loaded = false;
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109 modulemap[host][name] = nil;
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110 return true;
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111 end
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112
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
113 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
114 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
115 return nil, "insufficient-parameters";
4638
352cd61e2682 modulemanager: Allow loading a module onto "*" (part-fixes #228)
Matthew Wild <mwild1@gmail.com>
parents: 4606
diff changeset
116 elseif not hosts[host] and host ~= "*"then
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
117 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
118 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
119
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 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
121 modulemap[host] = {};
4638
352cd61e2682 modulemanager: Allow loading a module onto "*" (part-fixes #228)
Matthew Wild <mwild1@gmail.com>
parents: 4606
diff changeset
122 if host ~= "*" then
352cd61e2682 modulemanager: Allow loading a module onto "*" (part-fixes #228)
Matthew Wild <mwild1@gmail.com>
parents: 4606
diff changeset
123 hosts[host].modules = modulemap[host];
352cd61e2682 modulemanager: Allow loading a module onto "*" (part-fixes #228)
Matthew Wild <mwild1@gmail.com>
parents: 4606
diff changeset
124 end
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
125 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
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.
Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
129 return nil, "module-already-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
130 elseif modulemap["*"][module_name] then
4642
c1602c07d14d modulemanager: Support for shared modules - function module.add_host(host_module) in a global module
Matthew Wild <mwild1@gmail.com>
parents: 4641
diff changeset
131 local mod = modulemap["*"][module_name];
c1602c07d14d modulemanager: Support for shared modules - function module.add_host(host_module) in a global module
Matthew Wild <mwild1@gmail.com>
parents: 4641
diff changeset
132 if module_has_method(mod, "add_host") then
c1602c07d14d modulemanager: Support for shared modules - function module.add_host(host_module) in a global module
Matthew Wild <mwild1@gmail.com>
parents: 4641
diff changeset
133 local _log = logger.init(host..":"..module_name);
c1602c07d14d modulemanager: Support for shared modules - function module.add_host(host_module) in a global module
Matthew Wild <mwild1@gmail.com>
parents: 4641
diff changeset
134 local host_module_api = setmetatable({
c1602c07d14d modulemanager: Support for shared modules - function module.add_host(host_module) in a global module
Matthew Wild <mwild1@gmail.com>
parents: 4641
diff changeset
135 host = host, event_handlers = {}, items = {};
c1602c07d14d modulemanager: Support for shared modules - function module.add_host(host_module) in a global module
Matthew Wild <mwild1@gmail.com>
parents: 4641
diff changeset
136 _log = _log, log = function (self, ...) return _log(...); end;
c1602c07d14d modulemanager: Support for shared modules - function module.add_host(host_module) in a global module
Matthew Wild <mwild1@gmail.com>
parents: 4641
diff changeset
137 },{
c1602c07d14d modulemanager: Support for shared modules - function module.add_host(host_module) in a global module
Matthew Wild <mwild1@gmail.com>
parents: 4641
diff changeset
138 __index = modulemap["*"][module_name].module;
c1602c07d14d modulemanager: Support for shared modules - function module.add_host(host_module) in a global module
Matthew Wild <mwild1@gmail.com>
parents: 4641
diff changeset
139 });
4728
7c81b04a4fed modulemanager: Set module.environment before calling add_host, otherwise the module will get the parent's environment (thanks xnyhps and Maranda)
Matthew Wild <mwild1@gmail.com>
parents: 4665
diff changeset
140 local host_module = setmetatable({ module = host_module_api }, { __index = mod });
7c81b04a4fed modulemanager: Set module.environment before calling add_host, otherwise the module will get the parent's environment (thanks xnyhps and Maranda)
Matthew Wild <mwild1@gmail.com>
parents: 4665
diff changeset
141 host_module_api.environment = host_module;
4776
dbe9d75c0452 modulemanager: Fixes to handle circular dependencies in module:depends()
Matthew Wild <mwild1@gmail.com>
parents: 4746
diff changeset
142 modulemap[host][module_name] = host_module;
4642
c1602c07d14d modulemanager: Support for shared modules - function module.add_host(host_module) in a global module
Matthew Wild <mwild1@gmail.com>
parents: 4641
diff changeset
143 local ok, result, module_err = call_module_method(mod, "add_host", host_module_api);
4776
dbe9d75c0452 modulemanager: Fixes to handle circular dependencies in module:depends()
Matthew Wild <mwild1@gmail.com>
parents: 4746
diff changeset
144 if not ok or result == false then
dbe9d75c0452 modulemanager: Fixes to handle circular dependencies in module:depends()
Matthew Wild <mwild1@gmail.com>
parents: 4746
diff changeset
145 modulemap[host][module_name] = nil;
dbe9d75c0452 modulemanager: Fixes to handle circular dependencies in module:depends()
Matthew Wild <mwild1@gmail.com>
parents: 4746
diff changeset
146 return nil, ok and module_err or result;
dbe9d75c0452 modulemanager: Fixes to handle circular dependencies in module:depends()
Matthew Wild <mwild1@gmail.com>
parents: 4746
diff changeset
147 end
4642
c1602c07d14d modulemanager: Support for shared modules - function module.add_host(host_module) in a global module
Matthew Wild <mwild1@gmail.com>
parents: 4641
diff changeset
148 return host_module;
c1602c07d14d modulemanager: Support for shared modules - function module.add_host(host_module) in a global module
Matthew Wild <mwild1@gmail.com>
parents: 4641
diff changeset
149 end
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
150 return nil, "global-module-already-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
151 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
152
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
153
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
154 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
155 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
156 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
157 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
158 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
159
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 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
161 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
162 _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
163 , { __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.
Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
164
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 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
166 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.
Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
167
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 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
169
4776
dbe9d75c0452 modulemanager: Fixes to handle circular dependencies in module:depends()
Matthew Wild <mwild1@gmail.com>
parents: 4746
diff changeset
170 modulemap[host][module_name] = pluginenv;
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
171 local ok, err = pcall(mod);
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 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
173 -- 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
174 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
175 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
176 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
177 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
178 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
179 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
180
4639
98a29138dec8 modulemanager: Use api_instance rather than pluginenv.module (same thing)
Matthew Wild <mwild1@gmail.com>
parents: 4638
diff changeset
181 if api_instance.host == "*" then
98a29138dec8 modulemanager: Use api_instance rather than pluginenv.module (same thing)
Matthew Wild <mwild1@gmail.com>
parents: 4638
diff changeset
182 if not api_instance.global then -- COMPAT w/pre-0.9
4606
17785dbd9d58 modulemanager: Some refactoring. Deprecate module.host = "*", modules should call module:set_global() (which has been around since forever)
Matthew Wild <mwild1@gmail.com>
parents: 4604
diff changeset
183 log("warn", "mod_%s: Setting module.host = '*' deprecated, call module:set_global() instead", module_name);
17785dbd9d58 modulemanager: Some refactoring. Deprecate module.host = "*", modules should call module:set_global() (which has been around since forever)
Matthew Wild <mwild1@gmail.com>
parents: 4604
diff changeset
184 api_instance:set_global();
17785dbd9d58 modulemanager: Some refactoring. Deprecate module.host = "*", modules should call module:set_global() (which has been around since forever)
Matthew Wild <mwild1@gmail.com>
parents: 4604
diff changeset
185 end
4776
dbe9d75c0452 modulemanager: Fixes to handle circular dependencies in module:depends()
Matthew Wild <mwild1@gmail.com>
parents: 4746
diff changeset
186 modulemap[host][module_name] = nil;
dbe9d75c0452 modulemanager: Fixes to handle circular dependencies in module:depends()
Matthew Wild <mwild1@gmail.com>
parents: 4746
diff changeset
187 modulemap[api_instance.host][module_name] = pluginenv;
4643
9008fc396fb1 modulemanager: When a shared module becomes global, ensure it still gets loaded onto the original target host
Matthew Wild <mwild1@gmail.com>
parents: 4642
diff changeset
188 if host ~= api_instance.host and module_has_method(pluginenv, "add_host") then
9008fc396fb1 modulemanager: When a shared module becomes global, ensure it still gets loaded onto the original target host
Matthew Wild <mwild1@gmail.com>
parents: 4642
diff changeset
189 -- Now load the module again onto the host it was originally being loaded on
4662
105423f77d46 modulemanager: Report errors that happen when loading a shared module onto its original host
Matthew Wild <mwild1@gmail.com>
parents: 4652
diff changeset
190 ok, err = do_load_module(host, module_name);
4643
9008fc396fb1 modulemanager: When a shared module becomes global, ensure it still gets loaded onto the original target host
Matthew Wild <mwild1@gmail.com>
parents: 4642
diff changeset
191 end
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
192 end
4606
17785dbd9d58 modulemanager: Some refactoring. Deprecate module.host = "*", modules should call module:set_global() (which has been around since forever)
Matthew Wild <mwild1@gmail.com>
parents: 4604
diff changeset
193 end
17785dbd9d58 modulemanager: Some refactoring. Deprecate module.host = "*", modules should call module:set_global() (which has been around since forever)
Matthew Wild <mwild1@gmail.com>
parents: 4604
diff changeset
194 if not ok then
4776
dbe9d75c0452 modulemanager: Fixes to handle circular dependencies in module:depends()
Matthew Wild <mwild1@gmail.com>
parents: 4746
diff changeset
195 modulemap[api_instance.host][module_name] = nil;
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
196 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
197 end
4537
d8d257c13562 modulemanager: load(): Return and use the correct module object
Matthew Wild <mwild1@gmail.com>
parents: 4535
diff changeset
198 return ok and pluginenv, err;
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
199 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
200
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
201 local function do_reload_module(host, name)
745
5a343599cd3e core.modulemanager: Some refactoring to make upcoming changes a little easier
Matthew Wild <mwild1@gmail.com>
parents: 733
diff changeset
202 local mod = get_module(host, name);
710
56f6c115bc69 modulemanager: Added reload support, with callbacks for saving and restoring state
Waqas Hussain <waqas20@gmail.com>
parents: 709
diff changeset
203 if not mod then return nil, "module-not-loaded"; end
56f6c115bc69 modulemanager: Added reload support, with callbacks for saving and restoring state
Waqas Hussain <waqas20@gmail.com>
parents: 709
diff changeset
204
1360
857034905016 modulemanager: Changed to use util.pluginloader
Waqas Hussain <waqas20@gmail.com>
parents: 1346
diff changeset
205 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
206 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
207 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
208 return nil, err;
2afd6d9e21cd modulemanager: Check for syntax errors before reloading a module
Waqas Hussain <waqas20@gmail.com>
parents: 710
diff changeset
209 end
2afd6d9e21cd modulemanager: Check for syntax errors before reloading a module
Waqas Hussain <waqas20@gmail.com>
parents: 710
diff changeset
210
710
56f6c115bc69 modulemanager: Added reload support, with callbacks for saving and restoring state
Waqas Hussain <waqas20@gmail.com>
parents: 709
diff changeset
211 local saved;
745
5a343599cd3e core.modulemanager: Some refactoring to make upcoming changes a little easier
Matthew Wild <mwild1@gmail.com>
parents: 733
diff changeset
212 if module_has_method(mod, "save") then
5a343599cd3e core.modulemanager: Some refactoring to make upcoming changes a little easier
Matthew Wild <mwild1@gmail.com>
parents: 733
diff changeset
213 local ok, ret, err = call_module_method(mod, "save");
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214 if ok then
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215 saved = ret;
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216 else
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217 log("warn", "Error saving module '%s:%s' state: %s", host, name, ret);
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218 if not config.get(host, "core", "force_module_reload") then
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219 log("warn", "Aborting reload due to error, set force_module_reload to ignore this");
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220 return nil, "save-state-failed";
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221 else
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222 log("warn", "Continuing with reload (using the force)");
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223 end
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224 end
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225 end
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226
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227 do_unload_module(host, name);
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228 local ok, err = do_load_module(host, name);
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229 if ok then
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230 mod = get_module(host, name);
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231 if module_has_method(mod, "restore") then
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232 local ok, err = call_module_method(mod, "restore", saved or {})
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233 if (not ok) and err then
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234 log("warn", "Error restoring module '%s' from '%s': %s", name, host, err);
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235 end
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236 end
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237 end
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238 return ok and mod, err;
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239 end
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240
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241 --- Public API ---
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242
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243 -- Load a module and fire module-loaded event
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244 function load(host, name)
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245 local mod, err = do_load_module(host, name);
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246 if mod then
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247 (hosts[mod.module.host] or prosody).events.fire_event("module-loaded", { module = name, host = host });
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248 end
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249 return mod, err;
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250 end
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251
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252 -- Unload a module and fire module-unloaded
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253 function unload(host, name)
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254 local ok, err = do_unload_module(host, name);
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255 if ok then
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256 (hosts[host] or prosody).events.fire_event("module-unloaded", { module = name, host = host });
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257 end
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258 return ok, err;
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259 end
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260
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261 function reload(host, name)
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262 local ok, err = do_reload_module(host, name);
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263 if ok then
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264 (hosts[host] or prosody).events.fire_event("module-reloaded", { module = name, host = host });
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265 elseif not is_loaded(host, name) then
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266 (hosts[host] or prosody).events.fire_event("module-unloaded", { module = name, host = host });
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267 end
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268 return ok, err;
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269 end
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270
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271 function get_module(host, name)
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272 return modulemap[host] and modulemap[host][name];
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273 end
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274
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275 function get_modules(host)
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276 return modulemap[host];
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277 end
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278
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279 function is_loaded(host, name)
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280 return modulemap[host] and modulemap[host][name] and true;
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281 end
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282
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283 function module_has_method(module, method)
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284 return type(rawget(module.module, method)) == "function";
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285 end
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286
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287 function call_module_method(module, method, ...)
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288 local f = rawget(module.module, method);
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289 if type(f) == "function" then
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290 return pcall(f, ...);
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291 else
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292 return false, "no-such-method";
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293 end
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294 end
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295
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296 return _M;