prosody
b3ceb7627e27
core/modulemanager.lua

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core/modulemanager.lua @ 6038:b3ceb7627e27

Merge 0.9->0.10
author Kim Alvefur <zash@zash.se>
date Tue, 25 Mar 2014 19:16:38 +0100
parent 6003:28a90f5fea46
parent 6034:ee14da71d3fc
child 6319:92d009af6eba
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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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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 local set = require "util.set";
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15 local new_multitable = require "util.multitable".new;
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16
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17 local hosts = hosts;
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18 local prosody = prosody;
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19
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20 local pcall, xpcall = pcall, xpcall;
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21 local setmetatable, rawget = setmetatable, rawget;
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22 local ipairs, pairs, type, tostring, t_insert = ipairs, pairs, type, tostring, table.insert;
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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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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 = {prosody.platform, "presence", "message", "iq", "offline", "c2s", "s2s"};
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33 local component_inheritable_modules = {"tls", "saslauth", "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, "component_module");
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48
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49 local global_modules_enabled = config.get("*", "modules_enabled");
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50 local global_modules_disabled = config.get("*", "modules_disabled");
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51 local host_modules_enabled = config.get(host, "modules_enabled");
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52 local host_modules_disabled = config.get(host, "modules_disabled");
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53
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54 if host_modules_enabled == global_modules_enabled then host_modules_enabled = nil; end
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55 if host_modules_disabled == global_modules_disabled then host_modules_disabled = nil; end
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56
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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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58 if component then
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59 global_modules = set.intersection(set.new(component_inheritable_modules), global_modules);
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60 end
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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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68 end
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69
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70 if component then
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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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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
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82 --- Private helpers ---
438
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83
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84 local function do_unload_module(host, name)
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85 local mod = get_module(host, name);
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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
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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);
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92 end
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93 end
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94
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95 for object, event, handler in mod.module.event_handlers:iter(nil, nil, nil) do
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96 object.remove_handler(event, handler);
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97 end
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98
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99 if mod.module.items then -- remove items
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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
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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
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108 end
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109 mod.module.loaded = false;
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110 modulemap[host][name] = nil;
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111 return true;
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112 end
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113
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114 local function do_load_module(host, module_name, state)
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115 if not (host and module_name) then
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116 return nil, "insufficient-parameters";
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352cd61e2682 modulemanager: Allow loading a module onto "*" (part-fixes #228)
Matthew Wild <mwild1@gmail.com>
parents: 4606
diff changeset
117 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
118 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
119 end
5776
bd0ff8ae98a8 Remove all trailing whitespace
Florian Zeitz <florob@babelmonkeys.de>
parents: 5411
diff changeset
120
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
121 if not modulemap[host] then
5123
7c5c86fa552e hostmanager, modulemanager: Ensure hosts[*].modules always exists.
Waqas Hussain <waqas20@gmail.com>
parents: 5021
diff changeset
122 modulemap[host] = hosts[host].modules;
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
123 end
5776
bd0ff8ae98a8 Remove all trailing whitespace
Florian Zeitz <florob@babelmonkeys.de>
parents: 5411
diff changeset
124
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 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
126 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
127 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
128 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
129 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
130 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
131 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
132 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
133 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
134 _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
135 },{
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 __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
137 });
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
138 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
139 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
140 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
141 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
142 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
143 modulemap[host][module_name] = nil;
dbe9d75c0452 modulemanager: Fixes to handle circular dependencies in module:depends()
Matthew Wild <mwild1@gmail.com>
parents: 4746
diff changeset
144 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
145 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
146 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
147 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
148 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
149 end
5776
bd0ff8ae98a8 Remove all trailing whitespace
Florian Zeitz <florob@babelmonkeys.de>
parents: 5411
diff changeset
150
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
151
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 local _log = logger.init(host..":"..module_name);
5021
85b2689dbcfe Eliminate direct setfenv usage
Florian Zeitz <florob@babelmonkeys.de>
parents: 4896
diff changeset
154 local api_instance = setmetatable({ name = module_name, host = host,
5192
3fc3a3072cc2 modulemanager: Set module.reloading when a module is reloading, and when loading make the saved state available in module.saved_state (if any)
Matthew Wild <mwild1@gmail.com>
parents: 5123
diff changeset
155 _log = _log, log = function (self, ...) return _log(...); end, event_handlers = new_multitable(),
3fc3a3072cc2 modulemanager: Set module.reloading when a module is reloading, and when loading make the saved state available in module.saved_state (if any)
Matthew Wild <mwild1@gmail.com>
parents: 5123
diff changeset
156 reloading = not not state, saved_state = state~=true and state or 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
157 , { __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
158
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 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
160 api_instance.environment = pluginenv;
5776
bd0ff8ae98a8 Remove all trailing whitespace
Florian Zeitz <florob@babelmonkeys.de>
parents: 5411
diff changeset
161
5021
85b2689dbcfe Eliminate direct setfenv usage
Florian Zeitz <florob@babelmonkeys.de>
parents: 4896
diff changeset
162 local mod, err = pluginloader.load_code(module_name, nil, pluginenv);
85b2689dbcfe Eliminate direct setfenv usage
Florian Zeitz <florob@babelmonkeys.de>
parents: 4896
diff changeset
163 if not mod then
85b2689dbcfe Eliminate direct setfenv usage
Florian Zeitz <florob@babelmonkeys.de>
parents: 4896
diff changeset
164 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
165 return nil, err;
85b2689dbcfe Eliminate direct setfenv usage
Florian Zeitz <florob@babelmonkeys.de>
parents: 4896
diff changeset
166 end
85b2689dbcfe Eliminate direct setfenv usage
Florian Zeitz <florob@babelmonkeys.de>
parents: 4896
diff changeset
167
85b2689dbcfe Eliminate direct setfenv usage
Florian Zeitz <florob@babelmonkeys.de>
parents: 4896
diff changeset
168 api_instance.path = err;
85b2689dbcfe Eliminate direct setfenv usage
Florian Zeitz <florob@babelmonkeys.de>
parents: 4896
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
5192
3fc3a3072cc2 modulemanager: Set module.reloading when a module is reloading, and when loading make the saved state available in module.saved_state (if any)
Matthew Wild <mwild1@gmail.com>
parents: 5123
diff changeset
180 api_instance.reloading, api_instance.saved_state = nil, 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
181
4639
98a29138dec8 modulemanager: Use api_instance rather than pluginenv.module (same thing)
Matthew Wild <mwild1@gmail.com>
parents: 4638
diff changeset
182 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
183 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
184 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
185 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
186 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
187 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
188 end
4776
dbe9d75c0452 modulemanager: Fixes to handle circular dependencies in module:depends()
Matthew Wild <mwild1@gmail.com>
parents: 4746
diff changeset
189 modulemap[host][module_name] = nil;
dbe9d75c0452 modulemanager: Fixes to handle circular dependencies in module:depends()
Matthew Wild <mwild1@gmail.com>
parents: 4746
diff changeset
190 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
191 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
192 -- 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
193 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
194 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
195 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
196 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
197 if not ok then
4776
dbe9d75c0452 modulemanager: Fixes to handle circular dependencies in module:depends()
Matthew Wild <mwild1@gmail.com>
parents: 4746
diff changeset
198 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
199 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
200 end
4537
d8d257c13562 modulemanager: load(): Return and use the correct module object
Matthew Wild <mwild1@gmail.com>
parents: 4535
diff changeset
201 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
202 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
203
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 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
205 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
206 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
207
1360
857034905016 modulemanager: Changed to use util.pluginloader
Waqas Hussain <waqas20@gmail.com>
parents: 1346
diff changeset
208 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
209 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
210 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
211 return nil, err;
2afd6d9e21cd modulemanager: Check for syntax errors before reloading a module
Waqas Hussain <waqas20@gmail.com>
parents: 710
diff changeset
212 end
2afd6d9e21cd modulemanager: Check for syntax errors before reloading a module
Waqas Hussain <waqas20@gmail.com>
parents: 710
diff changeset
213
710
56f6c115bc69 modulemanager: Added reload support, with callbacks for saving and restoring state
Waqas Hussain <waqas20@gmail.com>
parents: 709
diff changeset
214 local saved;
745
5a343599cd3e core.modulemanager: Some refactoring to make upcoming changes a little easier
Matthew Wild <mwild1@gmail.com>
parents: 733
diff changeset
215 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
216 local ok, ret, err = call_module_method(mod, "save");
5a343599cd3e core.modulemanager: Some refactoring to make upcoming changes a little easier
Matthew Wild <mwild1@gmail.com>
parents: 733
diff changeset
217 if ok then
5a343599cd3e core.modulemanager: Some refactoring to make upcoming changes a little easier
Matthew Wild <mwild1@gmail.com>
parents: 733
diff changeset
218 saved = ret;
710
56f6c115bc69 modulemanager: Added reload support, with callbacks for saving and restoring state
Waqas Hussain <waqas20@gmail.com>
parents: 709
diff changeset
219 else
4383
718445c040c4 modulemanager: Fix undefined global access in handling of module.save error handling.
Waqas Hussain <waqas20@gmail.com>
parents: 4381
diff changeset
220 log("warn", "Error saving module '%s:%s' state: %s", host, name, ret);
5377
898454038524 core.*: Complete removal of all traces of the "core" section and section-related code.
Kim Alvefur <zash@zash.se>
parents: 5192
diff changeset
221 if not config.get(host, "force_module_reload") then
745
5a343599cd3e core.modulemanager: Some refactoring to make upcoming changes a little easier
Matthew Wild <mwild1@gmail.com>
parents: 733
diff changeset
222 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
Matthew Wild <mwild1@gmail.com>
parents: 733
diff changeset
223 return nil, "save-state-failed";
5a343599cd3e core.modulemanager: Some refactoring to make upcoming changes a little easier
Matthew Wild <mwild1@gmail.com>
parents: 733
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224 else
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225 log("warn", "Continuing with reload (using the force)");
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226 end
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227 end
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228 end
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229
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230 mod.module.reloading = true;
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231 do_unload_module(host, name);
5192
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232 local ok, err = do_load_module(host, name, saved or true);
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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
4804
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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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diff changeset
265 function reload(host, name)
4853
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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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diff changeset
269 (hosts[host] or prosody).events.fire_event("module-reloaded", { module = name, host = host });
4853
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270 mod.module.reloading = nil;
4532
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diff changeset
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;
4532
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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_items(key, host)
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282 local result = {};
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283 local modules = modulemap[host];
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284 if not key or not host or not modules then return nil; end
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285
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diff changeset
286 for _, module in pairs(modules) do
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diff changeset
287 local mod = module.module;
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288 if mod.items and mod.items[key] then
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diff changeset
289 for _, value in ipairs(mod.items[key]) do
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diff changeset
290 t_insert(result, value);
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diff changeset
291 end
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diff changeset
292 end
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diff changeset
293 end
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294
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diff changeset
295 return result;
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diff changeset
296 end
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297
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diff changeset
298 function get_modules(host)
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diff changeset
299 return modulemap[host];
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300 end
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diff changeset
301
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diff changeset
302 function is_loaded(host, name)
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diff changeset
303 return modulemap[host] and modulemap[host][name] and true;
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diff changeset
304 end
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diff changeset
305
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diff changeset
306 function module_has_method(module, method)
4641
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parents: 4640
diff changeset
307 return type(rawget(module.module, method)) == "function";
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diff changeset
308 end
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diff changeset
309
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
310 function call_module_method(module, method, ...)
4641
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parents: 4640
diff changeset
311 local f = rawget(module.module, method);
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parents: 4640
diff changeset
312 if type(f) == "function" then
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diff changeset
313 return pcall(f, ...);
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diff changeset
314 else
5a343599cd3e core.modulemanager: Some refactoring to make upcoming changes a little easier
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diff changeset
315 return false, "no-such-method";
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diff changeset
316 end
5a343599cd3e core.modulemanager: Some refactoring to make upcoming changes a little easier
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diff changeset
317 end
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diff changeset
318
39
89877d61ac51 Add support for arbitrary events and event hooks
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parents: 38
diff changeset
319 return _M;