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core/modulemanager.lua @ 10429:0b04d25c4ffb
mod_csi: Cache CSI module availability to improve readabilty
author | Kim Alvefur <zash@zash.se> |
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date | Sat, 23 Nov 2019 17:15:34 +0100 |
parent | 10288:f36f7d2c269b |
child | 10434:8f709577fe8e |
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 -- |
758 | 5 -- This project is MIT/X11 licensed. Please see the |
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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14 |
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15 local new_multitable = require "util.multitable".new; |
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16 local api = require "core.moduleapi"; -- Module API container |
30 | 17 |
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18 local prosody = prosody; |
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19 local hosts = prosody.hosts; |
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modulemanager: Add get_host_type() API method, and fix up call_module_method to work properly
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20 |
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21 local xpcall = require "util.xpcall".xpcall; |
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modulemanager: Fix issues introduced in previous commit acf74ad0b795 [thanks luacheck, scansion]
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22 local debug_traceback = debug.traceback; |
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23 local setmetatable, rawget = setmetatable, rawget; |
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24 local ipairs, pairs, type, t_insert = ipairs, pairs, type, table.insert; |
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25 |
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26 local autoload_modules = { |
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27 prosody.platform, |
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28 "presence", |
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29 "message", |
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30 "iq", |
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31 "offline", |
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32 "c2s", |
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33 "s2s", |
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34 "s2s_auth_certs", |
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35 }; |
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36 local component_inheritable_modules = { |
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37 "tls", |
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38 "saslauth", |
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39 "dialback", |
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40 "iq", |
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41 "s2s", |
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42 "s2s_bidi", |
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43 }; |
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44 |
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45 -- We need this to let modules access the real global namespace |
30 | 46 local _G = _G; |
47 | |
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48 local _ENV = nil; |
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49 -- luacheck: std none |
30 | 50 |
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51 local load_modules_for_host, load, unload, reload, get_module, get_items; |
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52 local get_modules, is_loaded, module_has_method, call_module_method; |
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53 |
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modulemanager: Cleanup some unused variables, imports, whitespace and add a comment.
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54 -- [host] = { [module] = module_env } |
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55 local modulemap = { ["*"] = {} }; |
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56 |
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57 -- Get the list of modules to be loaded on a host |
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58 local function get_modules_for_host(host) |
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59 local component = config.get(host, "component_module"); |
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60 |
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61 local global_modules_enabled = config.get("*", "modules_enabled"); |
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62 local global_modules_disabled = config.get("*", "modules_disabled"); |
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63 local host_modules_enabled = config.get(host, "modules_enabled"); |
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64 local host_modules_disabled = config.get(host, "modules_disabled"); |
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65 |
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66 if host_modules_enabled == global_modules_enabled then host_modules_enabled = nil; end |
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67 if host_modules_disabled == global_modules_disabled then host_modules_disabled = nil; end |
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68 |
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69 local global_modules = set.new(autoload_modules) + set.new(global_modules_enabled) - set.new(global_modules_disabled); |
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70 if component then |
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71 global_modules = set.intersection(set.new(component_inheritable_modules), global_modules); |
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72 end |
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73 local modules = (global_modules + set.new(host_modules_enabled)) - set.new(host_modules_disabled); |
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74 |
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75 -- COMPAT w/ pre 0.8 |
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76 if modules:contains("console") then |
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77 log("error", "The mod_console plugin has been renamed to mod_admin_telnet. Please update your config."); |
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78 modules:remove("console"); |
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79 modules:add("admin_telnet"); |
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80 end |
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81 |
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82 return modules, component; |
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83 end |
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84 |
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85 -- Load modules when a host is activated |
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86 function load_modules_for_host(host) |
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87 local modules, component_module = get_modules_for_host(host); |
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88 |
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89 -- Ensure component module is loaded first |
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90 if component_module then |
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91 load(host, component_module); |
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92 end |
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93 for module in modules do |
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94 load(host, module); |
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95 end |
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96 end |
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97 prosody.events.add_handler("host-activated", load_modules_for_host); |
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98 prosody.events.add_handler("host-deactivated", function (host) |
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99 modulemap[host] = nil; |
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100 end); |
30 | 101 |
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102 --- Private helpers --- |
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103 |
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104 local function do_unload_module(host, name) |
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105 local mod = get_module(host, name); |
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106 if not mod then return nil, "module-not-loaded"; end |
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107 |
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108 if module_has_method(mod, "unload") then |
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109 local ok, err = call_module_method(mod, "unload"); |
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110 if (not ok) and err then |
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111 log("warn", "Non-fatal error unloading module '%s' on '%s': %s", name, host, err); |
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112 end |
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113 end |
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114 |
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115 for object, event, handler in mod.module.event_handlers:iter(nil, nil, nil) do |
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116 object.remove_handler(event, handler); |
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117 end |
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118 |
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119 if mod.module.items then -- remove items |
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120 local events = (host == "*" and prosody.events) or hosts[host].events; |
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121 for key,t in pairs(mod.module.items) do |
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122 for i = #t,1,-1 do |
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123 local value = t[i]; |
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124 t[i] = nil; |
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125 events.fire_event("item-removed/"..key, {source = mod.module, item = value}); |
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126 end |
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127 end |
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128 end |
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129 mod.module.loaded = false; |
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130 modulemap[host][name] = nil; |
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131 return true; |
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132 end |
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133 |
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134 local function do_load_module(host, module_name, state) |
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135 if not (host and module_name) then |
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136 return nil, "insufficient-parameters"; |
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137 elseif not hosts[host] and host ~= "*"then |
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138 return nil, "unknown-host"; |
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139 end |
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140 |
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141 if not modulemap[host] then |
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142 modulemap[host] = hosts[host].modules; |
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143 end |
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144 |
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145 if modulemap[host][module_name] then |
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146 if not modulemap["*"][module_name] then |
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147 log("debug", "%s is already loaded for %s, so not loading again", module_name, host); |
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148 end |
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149 return nil, "module-already-loaded"; |
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150 elseif modulemap["*"][module_name] then |
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151 local mod = modulemap["*"][module_name]; |
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152 if module_has_method(mod, "add_host") then |
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153 local _log = logger.init(host..":"..module_name); |
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154 local host_module_api = setmetatable({ |
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155 host = host, event_handlers = new_multitable(), items = {}; |
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156 _log = _log, log = function (self, ...) return _log(...); end; --luacheck: ignore 212/self |
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157 },{ |
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158 __index = modulemap["*"][module_name].module; |
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159 }); |
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160 local host_module = setmetatable({ module = host_module_api }, { __index = mod }); |
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161 host_module_api.environment = host_module; |
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162 modulemap[host][module_name] = host_module; |
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163 local ok, result, module_err = call_module_method(mod, "add_host", host_module_api); |
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164 if not ok or result == false then |
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165 modulemap[host][module_name] = nil; |
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166 return nil, ok and module_err or result; |
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167 end |
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168 return host_module; |
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169 end |
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170 return nil, "global-module-already-loaded"; |
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171 end |
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172 |
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173 |
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174 |
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175 local _log = logger.init(host..":"..module_name); |
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176 local api_instance = setmetatable({ name = module_name, host = host, |
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177 _log = _log, log = function (self, ...) return _log(...); end, --luacheck: ignore 212/self |
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178 event_handlers = new_multitable(), reloading = not not state, |
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179 saved_state = state~=true and state or nil } |
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180 , { __index = api }); |
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181 |
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182 local pluginenv = setmetatable({ module = api_instance }, { __index = _G }); |
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183 api_instance.environment = pluginenv; |
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184 |
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185 local mod, err = pluginloader.load_code(module_name, nil, pluginenv); |
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186 if not mod then |
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187 log("error", "Unable to load module '%s': %s", module_name or "nil", err or "nil"); |
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188 api_instance:set_status("error", "Failed to load (see log)"); |
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189 return nil, err; |
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190 end |
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191 |
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192 api_instance.path = err; |
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193 |
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194 modulemap[host][module_name] = pluginenv; |
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195 local ok, err = xpcall(mod, debug_traceback); |
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196 if ok then |
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197 -- Call module's "load" |
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198 if module_has_method(pluginenv, "load") then |
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199 ok, err = call_module_method(pluginenv, "load"); |
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200 if not ok then |
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201 log("warn", "Error loading module '%s' on '%s': %s", module_name, host, err or "nil"); |
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202 api_instance:set_status("warn", "Error during load (see log)"); |
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203 end |
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204 end |
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205 api_instance.reloading, api_instance.saved_state = nil, nil; |
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206 |
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207 if api_instance.host == "*" then |
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|
208 if not api_instance.global then -- COMPAT w/pre-0.9 |
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209 if host ~= "*" then |
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210 log("warn", "mod_%s: Setting module.host = '*' deprecated, call module:set_global() instead", module_name); |
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211 end |
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212 api_instance:set_global(); |
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213 end |
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214 modulemap[host][module_name] = nil; |
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215 modulemap[api_instance.host][module_name] = pluginenv; |
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216 if host ~= api_instance.host and module_has_method(pluginenv, "add_host") then |
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217 -- Now load the module again onto the host it was originally being loaded on |
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218 ok, err = do_load_module(host, module_name); |
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219 end |
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220 end |
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221 end |
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222 if not ok then |
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223 modulemap[api_instance.host][module_name] = nil; |
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224 log("error", "Error initializing module '%s' on '%s': %s", module_name, host, err or "nil"); |
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225 api_instance:set_status("warn", "Error during load (see log)"); |
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226 else |
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227 api_instance:set_status("core", "Loaded", false); |
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228 end |
4537
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229 return ok and pluginenv, err; |
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230 end |
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231 |
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232 local function do_reload_module(host, name) |
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233 local mod = get_module(host, name); |
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234 if not mod then return nil, "module-not-loaded"; end |
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235 |
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236 local _mod, err = pluginloader.load_code(name); -- checking for syntax errors |
713
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modulemanager: Check for syntax errors before reloading a module
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237 if not _mod then |
1386
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modulemanager: Fix copy/paste error, should be name instead of module_name
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238 log("error", "Unable to load module '%s': %s", name or "nil", err or "nil"); |
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239 return nil, err; |
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240 end |
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241 |
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242 local saved; |
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243 if module_has_method(mod, "save") then |
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244 local ok, ret, err = call_module_method(mod, "save"); |
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245 if ok then |
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246 saved = ret; |
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247 else |
4383
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|
248 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>
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|
249 if not config.get(host, "force_module_reload") then |
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250 log("warn", "Aborting reload due to error, set force_module_reload to ignore this"); |
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251 return nil, "save-state-failed"; |
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252 else |
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253 log("warn", "Continuing with reload (using the force)"); |
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254 end |
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255 end |
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256 end |
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257 |
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)
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parents:
5123
diff
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258 mod.module.reloading = true; |
4532
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|
259 do_unload_module(host, name); |
5192
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|
260 local ok, err = do_load_module(host, name, saved or true); |
745
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261 if ok then |
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|
262 mod = get_module(host, name); |
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|
263 if module_has_method(mod, "restore") then |
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|
264 local ok, err = call_module_method(mod, "restore", saved or {}) |
710
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|
265 if (not ok) and err then |
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|
266 log("warn", "Error restoring module '%s' from '%s': %s", name, host, err); |
710
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|
267 end |
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|
268 end |
4532
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|
269 end |
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|
270 return ok and mod, err; |
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271 end |
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272 |
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273 --- Public API --- |
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|
274 |
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275 -- Load a module and fire module-loaded event |
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|
276 function load(host, name) |
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|
277 local mod, err = do_load_module(host, name); |
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|
278 if mod then |
4804
607414b26c8c
modulemanager: Pass the module's final host (e.g. '*') to the module-loaded event
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4801
diff
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|
279 (hosts[mod.module.host] or prosody).events.fire_event("module-loaded", { module = name, host = mod.module.host }); |
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280 end |
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|
281 return mod, err; |
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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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282 end |
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283 |
d8dbf569766c
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284 -- Unload a module and fire module-unloaded |
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changeset
|
285 function unload(host, name) |
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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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286 local ok, err = do_unload_module(host, name); |
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287 if ok then |
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288 (hosts[host] or prosody).events.fire_event("module-unloaded", { module = name, host = host }); |
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|
289 end |
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290 return ok, err; |
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291 end |
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|
292 |
4532
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|
293 function reload(host, name) |
4853
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modulemanager: Set module.reloading = true when firing module-reloaded event
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parents:
4804
diff
changeset
|
294 local mod, err = do_reload_module(host, name); |
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|
295 if mod then |
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|
296 modulemap[host][name].module.reloading = true; |
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|
297 (hosts[host] or prosody).events.fire_event("module-reloaded", { module = name, host = host }); |
4853
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|
298 mod.module.reloading = nil; |
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|
299 elseif not is_loaded(host, name) then |
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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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300 (hosts[host] or prosody).events.fire_event("module-unloaded", { module = name, host = host }); |
d8dbf569766c
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|
301 end |
4853
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|
302 return mod, err; |
4532
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303 end |
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304 |
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305 function get_module(host, name) |
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306 return modulemap[host] and modulemap[host][name]; |
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307 end |
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308 |
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309 function get_items(key, host) |
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310 local result = {}; |
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311 local modules = modulemap[host]; |
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312 if not key or not host or not modules then return nil; end |
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313 |
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314 for _, module in pairs(modules) do |
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315 local mod = module.module; |
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316 if mod.items and mod.items[key] then |
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317 for _, value in ipairs(mod.items[key]) do |
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318 t_insert(result, value); |
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319 end |
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320 end |
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321 end |
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322 |
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323 return result; |
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324 end |
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325 |
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326 function get_modules(host) |
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327 return modulemap[host]; |
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328 end |
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329 |
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330 function is_loaded(host, name) |
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331 return modulemap[host] and modulemap[host][name] and true; |
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332 end |
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333 |
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334 function module_has_method(module, method) |
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335 return type(rawget(module.module, method)) == "function"; |
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336 end |
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337 |
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338 function call_module_method(module, method, ...) |
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339 local f = rawget(module.module, method); |
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340 if type(f) == "function" then |
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341 return xpcall(f, debug_traceback, ...); |
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342 else |
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343 return false, "no-such-method"; |
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344 end |
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345 end |
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346 |
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347 return { |
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348 get_modules_for_host = get_modules_for_host; |
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349 load_modules_for_host = load_modules_for_host; |
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350 load = load; |
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351 unload = unload; |
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352 reload = reload; |
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353 get_module = get_module; |
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354 get_items = get_items; |
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355 get_modules = get_modules; |
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356 is_loaded = is_loaded; |
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357 module_has_method = module_has_method; |
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358 call_module_method = call_module_method; |
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359 }; |