prosody
85b2689dbcfe
core/modulemanager.lua

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core/modulemanager.lua @ 5021:85b2689dbcfe

Eliminate direct setfenv usage
author Florian Zeitz <florob@babelmonkeys.de>
date Fri, 08 Jun 2012 05:04:38 +0200
parent 4896:27cda15104f2
child 5123:7c5c86fa552e
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1523
841d61be198f Remove version number from copyright headers
Matthew Wild <mwild1@gmail.com>
parents: 1505
diff changeset
1 -- Prosody IM
2923
b7049746bd29 Update copyright headers for 2010
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2 -- Copyright (C) 2008-2010 Matthew Wild
b7049746bd29 Update copyright headers for 2010
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3 -- Copyright (C) 2008-2010 Waqas Hussain
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cccd610a0ef9 Insert copyright/license headers
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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
438
193f9dd64f17 Bumper commit for the new modulemanager API \o/ Updates all the modules, though some more changes may be in store.
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parents: 400
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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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f6555ebf84ec Move module loading to modulemanager
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11 local config = require "core.configmanager";
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857034905016 modulemanager: Changed to use util.pluginloader
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12 local pluginloader = require "util.pluginloader";
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parents: 4893
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13 local set = require "util.set";
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14
27cda15104f2 modulemanager, moduleapi: Turn module.event_handlers into a multitable and track object->event->handler associations correctly (thanks Zash)
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15 local new_multitable = require "util.multitable".new;
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16
747
40837f3422ab modulemanager: Add get_host_type() API method, and fix up call_module_method to work properly
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17 local hosts = hosts;
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4721e4124692 modulemanager: module:hook now allows global modules to hook events on the prosody.events object
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18 local prosody = prosody;
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40837f3422ab modulemanager: Add get_host_type() API method, and fix up call_module_method to work properly
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19
4746
37020f4b6799 modulemanager: Remove unused function imports
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20 local pcall, xpcall = pcall, xpcall;
5021
85b2689dbcfe Eliminate direct setfenv usage
Florian Zeitz <florob@babelmonkeys.de>
parents: 4896
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21 local setmetatable, rawget = setmetatable, rawget;
4746
37020f4b6799 modulemanager: Remove unused function imports
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22 local pairs, type, tostring = pairs, type, tostring;
2151
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23
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24 local debug_traceback = debug.traceback;
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25 local unpack, select = unpack, select;
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26 pcall = function(f, ...)
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27 local n = select("#", ...);
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28 local params = {...};
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1e570ed17147 modulemanager: Fixed: Locally defined pcall wasn't returning return values of the called function.
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29 return xpcall(function() return f(unpack(params, 1, n)) end, function(e) return tostring(e).."\n"..debug_traceback(); end);
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30 end
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31
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32 local autoload_modules = {"presence", "message", "iq", "offline", "c2s", "s2s"};
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33 local component_inheritable_modules = {"tls", "dialback", "iq", "s2s"};
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34
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35 -- We need this to let modules access the real global namespace
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36 local _G = _G;
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37
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38 module "modulemanager"
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39
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40 local api = _G.require "core.moduleapi"; -- Module API container
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41
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42 -- [host] = { [module] = module_env }
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43 local modulemap = { ["*"] = {} };
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44
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45 -- Load modules when a host is activated
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46 function load_modules_for_host(host)
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47 local component = config.get(host, "core", "component_module");
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48
ec1151d0c4a4 modulemanager: load_modules_for_host(): Inherit 'tls' and 'dialback' from global modules list for components, and load the component module. Also refactored to use util.set.
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49 local global_modules_enabled = config.get("*", "core", "modules_enabled");
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50 local global_modules_disabled = config.get("*", "core", "modules_disabled");
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parents: 3588
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51 local host_modules_enabled = config.get(host, "core", "modules_enabled");
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parents: 3588
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52 local host_modules_disabled = config.get(host, "core", "modules_disabled");
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parents: 3588
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53
ec1151d0c4a4 modulemanager: load_modules_for_host(): Inherit 'tls' and 'dialback' from global modules list for components, and load the component module. Also refactored to use util.set.
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54 if host_modules_enabled == global_modules_enabled then host_modules_enabled = nil; end
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parents: 3588
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55 if host_modules_disabled == global_modules_disabled then host_modules_disabled = nil; end
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parents: 3588
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56
ec1151d0c4a4 modulemanager: load_modules_for_host(): Inherit 'tls' and 'dialback' from global modules list for components, and load the component module. Also refactored to use util.set.
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57 local global_modules = set.new(autoload_modules) + set.new(global_modules_enabled) - set.new(global_modules_disabled);
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parents: 3588
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58 if component then
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bbeba9f2acf8 modulemanager: load_modules_for_host(): For components, the inherited modules are the intersection of the inheritable and global modules lists, not the difference.
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59 global_modules = set.intersection(set.new(component_inheritable_modules), global_modules);
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1e674dae31ae modulemanager: Re-organise module loading to still work when no global modules_enabled is defined in the config (thanks hoelzro for accidentally discovering this one)
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60 end
4135
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61 local modules = (global_modules + set.new(host_modules_enabled)) - set.new(host_modules_disabled);
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62
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63 -- COMPAT w/ pre 0.8
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64 if modules:contains("console") then
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65 log("error", "The mod_console plugin has been renamed to mod_admin_telnet. Please update your config.");
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66 modules:remove("console");
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67 modules:add("admin_telnet");
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parents: 3677
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68 end
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parents: 3677
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69
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parents: 3588
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70 if component then
ec1151d0c4a4 modulemanager: load_modules_for_host(): Inherit 'tls' and 'dialback' from global modules list for components, and load the component module. Also refactored to use util.set.
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parents: 3588
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71 load(host, component);
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72 end
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73 for module in modules do
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74 load(host, module);
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75 end
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76 end
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77 prosody.events.add_handler("host-activated", load_modules_for_host);
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791388f90156 modulemanager: Clear modulemap when a host is deactivated (thanks xnyhps)
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78 prosody.events.add_handler("host-deactivated", function (host)
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79 modulemap[host] = nil;
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80 end);
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81
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
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82 --- Private helpers ---
438
193f9dd64f17 Bumper commit for the new modulemanager API \o/ Updates all the modules, though some more changes may be in store.
Matthew Wild <mwild1@gmail.com>
parents: 400
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83
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
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84 local function do_unload_module(host, name)
2278
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85 local mod = get_module(host, name);
439
6608ad3a72f3 is_loaded() and incomplete unload() for modules
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86 if not mod then return nil, "module-not-loaded"; end
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87
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88 if module_has_method(mod, "unload") then
5a343599cd3e core.modulemanager: Some refactoring to make upcoming changes a little easier
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89 local ok, err = call_module_method(mod, "unload");
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90 if (not ok) and err then
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91 log("warn", "Non-fatal error unloading module '%s' on '%s': %s", name, host, err);
439
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92 end
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93 end
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94
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27cda15104f2 modulemanager, moduleapi: Turn module.event_handlers into a multitable and track object->event->handler associations correctly (thanks Zash)
Matthew Wild <mwild1@gmail.com>
parents: 4893
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95 for object, event, handler in mod.module.event_handlers:iter(nil, nil, nil) do
27cda15104f2 modulemanager, moduleapi: Turn module.event_handlers into a multitable and track object->event->handler associations correctly (thanks Zash)
Matthew Wild <mwild1@gmail.com>
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96 object.remove_handler(event, handler);
1259
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97 end
4534
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parents: 4533
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98
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Waqas Hussain <waqas20@gmail.com>
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99 if mod.module.items then -- remove items
4604
eef5e3a83792 modulemanager: Use appropriate events object for global modules when firing item-removed on unload
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100 local events = (host == "*" and prosody.events) or hosts[host].events;
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101 for key,t in pairs(mod.module.items) do
fbddc3ed0d09 modulemanager: Fire item-removed events on module unload.
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102 for i = #t,1,-1 do
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103 local value = t[i];
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104 t[i] = nil;
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105 events.fire_event("item-removed/"..key, {source = mod.module, item = value});
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106 end
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107 end
fbddc3ed0d09 modulemanager: Fire item-removed events on module unload.
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108 end
4665
6be91ca54613 modulemanager: Set module.loaded = false on unload
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109 mod.module.loaded = false;
1986
d4ba9d94eb74 modulemanager: Slightly rearranged code for more robust unloading of modules.
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parents: 1960
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110 modulemap[host][name] = nil;
670
d5cf10b7fc44 Modulemanager: Basic modules can now be unloaded correctly
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111 return true;
439
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diff changeset
112 end
6608ad3a72f3 is_loaded() and incomplete unload() for modules
Matthew Wild <mwild1@gmail.com>
parents: 438
diff changeset
113
4532
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parents: 4531
diff changeset
114 local function do_load_module(host, module_name)
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Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
115 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
116 return nil, "insufficient-parameters";
4638
352cd61e2682 modulemanager: Allow loading a module onto "*" (part-fixes #228)
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parents: 4606
diff changeset
117 elseif not hosts[host] and host ~= "*"then
4532
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Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
118 return nil, "unknown-host";
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Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
119 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
120
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parents: 4531
diff changeset
121 if not modulemap[host] then
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Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
122 modulemap[host] = {};
4638
352cd61e2682 modulemanager: Allow loading a module onto "*" (part-fixes #228)
Matthew Wild <mwild1@gmail.com>
parents: 4606
diff changeset
123 if host ~= "*" then
352cd61e2682 modulemanager: Allow loading a module onto "*" (part-fixes #228)
Matthew Wild <mwild1@gmail.com>
parents: 4606
diff changeset
124 hosts[host].modules = modulemap[host];
352cd61e2682 modulemanager: Allow loading a module onto "*" (part-fixes #228)
Matthew Wild <mwild1@gmail.com>
parents: 4606
diff changeset
125 end
4532
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parents: 4531
diff changeset
126 end
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parents: 4531
diff changeset
127
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parents: 4531
diff changeset
128 if modulemap[host][module_name] then
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parents: 4531
diff changeset
129 log("warn", "%s is already loaded for %s, so not loading again", module_name, host);
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parents: 4531
diff changeset
130 return nil, "module-already-loaded";
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Matthew Wild <mwild1@gmail.com>
parents: 4531
diff changeset
131 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
132 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
133 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
134 local _log = logger.init(host..":"..module_name);
c1602c07d14d modulemanager: Support for shared modules - function module.add_host(host_module) in a global module
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parents: 4641
diff changeset
135 local host_module_api = setmetatable({
4896
27cda15104f2 modulemanager, moduleapi: Turn module.event_handlers into a multitable and track object->event->handler associations correctly (thanks Zash)
Matthew Wild <mwild1@gmail.com>
parents: 4893
diff changeset
136 host = host, event_handlers = new_multitable(), items = {};
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
137 _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
138 },{
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 __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
140 });
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
141 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
142 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
143 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
144 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
145 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
146 modulemap[host][module_name] = nil;
dbe9d75c0452 modulemanager: Fixes to handle circular dependencies in module:depends()
Matthew Wild <mwild1@gmail.com>
parents: 4746
diff changeset
147 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
148 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
149 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
150 end
4532
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parents: 4531
diff changeset
151 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.
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parents: 4531
diff changeset
152 end
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parents: 4531
diff changeset
153
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parents: 4531
diff changeset
154
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parents: 4531
diff changeset
155
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 local _log = logger.init(host..":"..module_name);
5021
85b2689dbcfe Eliminate direct setfenv usage
Florian Zeitz <florob@babelmonkeys.de>
parents: 4896
diff changeset
157 local api_instance = setmetatable({ name = module_name, host = host,
4896
27cda15104f2 modulemanager, moduleapi: Turn module.event_handlers into a multitable and track object->event->handler associations correctly (thanks Zash)
Matthew Wild <mwild1@gmail.com>
parents: 4893
diff changeset
158 _log = _log, log = function (self, ...) return _log(...); end, event_handlers = new_multitable() }
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
159 , { __index = api });
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parents: 4531
diff changeset
160
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 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
162 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
163
5021
85b2689dbcfe Eliminate direct setfenv usage
Florian Zeitz <florob@babelmonkeys.de>
parents: 4896
diff changeset
164 local mod, err = pluginloader.load_code(module_name, nil, pluginenv);
85b2689dbcfe Eliminate direct setfenv usage
Florian Zeitz <florob@babelmonkeys.de>
parents: 4896
diff changeset
165 if not mod then
85b2689dbcfe Eliminate direct setfenv usage
Florian Zeitz <florob@babelmonkeys.de>
parents: 4896
diff changeset
166 log("error", "Unable to load module '%s': %s", module_name or "nil", err or "nil");
85b2689dbcfe Eliminate direct setfenv usage
Florian Zeitz <florob@babelmonkeys.de>
parents: 4896
diff changeset
167 return nil, err;
85b2689dbcfe Eliminate direct setfenv usage
Florian Zeitz <florob@babelmonkeys.de>
parents: 4896
diff changeset
168 end
85b2689dbcfe Eliminate direct setfenv usage
Florian Zeitz <florob@babelmonkeys.de>
parents: 4896
diff changeset
169
85b2689dbcfe Eliminate direct setfenv usage
Florian Zeitz <florob@babelmonkeys.de>
parents: 4896
diff changeset
170 api_instance.path = err;
85b2689dbcfe Eliminate direct setfenv usage
Florian Zeitz <florob@babelmonkeys.de>
parents: 4896
diff changeset
171
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dbe9d75c0452 modulemanager: Fixes to handle circular dependencies in module:depends()
Matthew Wild <mwild1@gmail.com>
parents: 4746
diff changeset
172 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
173 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
174 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
175 -- 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
176 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
177 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
178 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
179 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
180 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
181 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
182
4639
98a29138dec8 modulemanager: Use api_instance rather than pluginenv.module (same thing)
Matthew Wild <mwild1@gmail.com>
parents: 4638
diff changeset
183 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
184 if not api_instance.global then -- COMPAT w/pre-0.9
4801
83cedf648b46 modulemanager: Hide deprecation warning for modules loaded on '*' directly (e.g. prosodyctl mod_<command>) (thanks Zash)
Matthew Wild <mwild1@gmail.com>
parents: 4776
diff changeset
185 if host ~= "*" then
83cedf648b46 modulemanager: Hide deprecation warning for modules loaded on '*' directly (e.g. prosodyctl mod_<command>) (thanks Zash)
Matthew Wild <mwild1@gmail.com>
parents: 4776
diff changeset
186 log("warn", "mod_%s: Setting module.host = '*' deprecated, call module:set_global() instead", module_name);
83cedf648b46 modulemanager: Hide deprecation warning for modules loaded on '*' directly (e.g. prosodyctl mod_<command>) (thanks Zash)
Matthew Wild <mwild1@gmail.com>
parents: 4776
diff changeset
187 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
188 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
189 end
4776
dbe9d75c0452 modulemanager: Fixes to handle circular dependencies in module:depends()
Matthew Wild <mwild1@gmail.com>
parents: 4746
diff changeset
190 modulemap[host][module_name] = nil;
dbe9d75c0452 modulemanager: Fixes to handle circular dependencies in module:depends()
Matthew Wild <mwild1@gmail.com>
parents: 4746
diff changeset
191 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
192 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
193 -- 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
194 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
195 end
4532
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parents: 4531
diff changeset
196 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
197 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
198 if not ok then
4776
dbe9d75c0452 modulemanager: Fixes to handle circular dependencies in module:depends()
Matthew Wild <mwild1@gmail.com>
parents: 4746
diff changeset
199 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
200 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
201 end
4537
d8d257c13562 modulemanager: load(): Return and use the correct module object
Matthew Wild <mwild1@gmail.com>
parents: 4535
diff changeset
202 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
203 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
204
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
205 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
206 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
207 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
208
1360
857034905016 modulemanager: Changed to use util.pluginloader
Waqas Hussain <waqas20@gmail.com>
parents: 1346
diff changeset
209 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
210 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
211 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
212 return nil, err;
2afd6d9e21cd modulemanager: Check for syntax errors before reloading a module
Waqas Hussain <waqas20@gmail.com>
parents: 710
diff changeset
213 end
2afd6d9e21cd modulemanager: Check for syntax errors before reloading a module
Waqas Hussain <waqas20@gmail.com>
parents: 710
diff changeset
214
710
56f6c115bc69 modulemanager: Added reload support, with callbacks for saving and restoring state
Waqas Hussain <waqas20@gmail.com>
parents: 709
diff changeset
215 local saved;
745
5a343599cd3e core.modulemanager: Some refactoring to make upcoming changes a little easier
Matthew Wild <mwild1@gmail.com>
parents: 733
diff changeset
216 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
217 local ok, ret, err = call_module_method(mod, "save");
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218 if ok then
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219 saved = ret;
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220 else
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221 log("warn", "Error saving module '%s:%s' state: %s", host, name, ret);
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222 if not config.get(host, "core", "force_module_reload") then
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223 log("warn", "Aborting reload due to error, set force_module_reload to ignore this");
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224 return nil, "save-state-failed";
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225 else
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226 log("warn", "Continuing with reload (using the force)");
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227 end
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228 end
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229 end
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230
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231 do_unload_module(host, name);
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232 local ok, err = do_load_module(host, name);
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233 if ok then
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234 mod = get_module(host, name);
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235 if module_has_method(mod, "restore") then
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236 local ok, err = call_module_method(mod, "restore", saved or {})
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237 if (not ok) and err then
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238 log("warn", "Error restoring module '%s' from '%s': %s", name, host, err);
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239 end
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240 end
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241 end
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242 return ok and mod, err;
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243 end
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244
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245 --- Public API ---
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246
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247 -- Load a module and fire module-loaded event
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248 function load(host, name)
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249 local mod, err = do_load_module(host, name);
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250 if mod then
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251 (hosts[mod.module.host] or prosody).events.fire_event("module-loaded", { module = name, host = mod.module.host });
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252 end
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253 return mod, err;
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254 end
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255
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256 -- Unload a module and fire module-unloaded
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257 function unload(host, name)
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258 local ok, err = do_unload_module(host, name);
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259 if ok then
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260 (hosts[host] or prosody).events.fire_event("module-unloaded", { module = name, host = host });
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261 end
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262 return ok, err;
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263 end
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264
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265 function reload(host, name)
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266 local mod, err = do_reload_module(host, name);
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267 if mod then
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268 modulemap[host][name].module.reloading = true;
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269 (hosts[host] or prosody).events.fire_event("module-reloaded", { module = name, host = host });
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270 mod.module.reloading = nil;
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271 elseif not is_loaded(host, name) then
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272 (hosts[host] or prosody).events.fire_event("module-unloaded", { module = name, host = host });
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273 end
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274 return mod, err;
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275 end
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276
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277 function get_module(host, name)
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278 return modulemap[host] and modulemap[host][name];
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279 end
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280
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281 function get_modules(host)
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282 return modulemap[host];
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283 end
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284
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285 function is_loaded(host, name)
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286 return modulemap[host] and modulemap[host][name] and true;
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287 end
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288
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289 function module_has_method(module, method)
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290 return type(rawget(module.module, method)) == "function";
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291 end
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292
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293 function call_module_method(module, method, ...)
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294 local f = rawget(module.module, method);
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295 if type(f) == "function" then
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296 return pcall(f, ...);
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297 else
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298 return false, "no-such-method";
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299 end
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300 end
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301
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302 return _M;