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core/modulemanager.lua @ 7842:9332b43931f5
mod_mam: Add some comments explaining archive expiry
author | Kim Alvefur <zash@zash.se> |
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date | Sat, 19 Nov 2016 18:26:09 +0100 |
parent | 7303:439d00063620 |
child | 7947:24170d74b00b |
rev | line source |
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1523
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Remove version number from copyright headers
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1 -- Prosody IM |
2923
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Update copyright headers for 2010
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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. | |
519
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Insert copyright/license headers
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7 -- |
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8 |
438
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Bumper commit for the new modulemanager API \o/ Updates all the modules, though some more changes may be in store.
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9 local logger = require "util.logger"; |
540
ec03f6968fa8
Added function add_feature to modules API (for adding disco features)
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10 local log = logger.init("modulemanager"); |
573
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Move module loading to modulemanager
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11 local config = require "core.configmanager"; |
1360
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modulemanager: Changed to use util.pluginloader
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12 local pluginloader = require "util.pluginloader"; |
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modulemanager, moduleapi: Turn module.event_handlers into a multitable and track object->event->handler associations correctly (thanks Zash)
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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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core.*: Remove use of module() function
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16 local api = require "core.moduleapi"; -- Module API container |
30 | 17 |
747
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modulemanager: Add get_host_type() API method, and fix up call_module_method to work properly
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18 local hosts = hosts; |
1247
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modulemanager: module:hook now allows global modules to hook events on the prosody.events object
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19 local prosody = prosody; |
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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 |
6660
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modulemanager: Remove unused import of pcall #luacheck
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21 local xpcall = xpcall; |
5021
85b2689dbcfe
Eliminate direct setfenv usage
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22 local setmetatable, rawget = setmetatable, rawget; |
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modulemanager: add missing ipairs import.
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23 local ipairs, pairs, type, tostring, t_insert = ipairs, pairs, type, tostring, table.insert; |
2151
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modulemanager: New module API methods for getting config options with type conversion, get_option_string, get_option_number, get_option_boolean, get_option_array, get_option_set
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24 |
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modulemanager: Log proper tracebacks on errors during module load/unload.
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25 local debug_traceback = debug.traceback; |
7162
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loggingmanager,modulemanager,moduleapi: Localize unpack compatible with Lua 5.2+
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26 local select = select; |
7163
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loggingmanager,modulemanager,moduleapi: Ignore warning about accessing _G.unpack [luacheck]
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27 local unpack = table.unpack or unpack; --luacheck: ignore 113 |
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28 local pcall = function(f, ...) |
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29 local n = select("#", ...); |
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30 local params = {...}; |
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modulemanager: Fixed: Locally defined pcall wasn't returning return values of the called function.
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31 return xpcall(function() return f(unpack(params, 1, n)) end, function(e) return tostring(e).."\n"..debug_traceback(); end); |
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32 end |
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33 |
6319
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mod_s2s_auth_certs: Split PKIX based certificate checking from mod_s2s into new plugin
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34 local autoload_modules = {prosody.platform, "presence", "message", "iq", "offline", "c2s", "s2s", "s2s_auth_certs"}; |
6034
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modulemanager: Load mod_saslauth on components by default
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35 local component_inheritable_modules = {"tls", "saslauth", "dialback", "iq", "s2s"}; |
1505
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modulemanager: Small code improvement, move autoloaded modules list to the top of the file
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36 |
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37 -- We need this to let modules access the real global namespace |
30 | 38 local _G = _G; |
39 | |
6779
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40 local _ENV = nil; |
30 | 41 |
6779
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core.*: Remove use of module() function
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42 local load_modules_for_host, load, unload, reload, get_module, get_items, get_modules, is_loaded, module_has_method, call_module_method; |
438
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43 |
4535
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modulemanager: Cleanup some unused variables, imports, whitespace and add a comment.
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44 -- [host] = { [module] = module_env } |
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45 local modulemap = { ["*"] = {} }; |
438
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46 |
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47 -- Load modules when a host is activated |
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48 function load_modules_for_host(host) |
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49 local component = config.get(host, "component_module"); |
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50 |
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51 local global_modules_enabled = config.get("*", "modules_enabled"); |
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52 local global_modules_disabled = config.get("*", "modules_disabled"); |
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53 local host_modules_enabled = config.get(host, "modules_enabled"); |
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54 local host_modules_disabled = config.get(host, "modules_disabled"); |
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55 |
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56 if host_modules_enabled == global_modules_enabled then host_modules_enabled = nil; end |
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57 if host_modules_disabled == global_modules_disabled then host_modules_disabled = nil; end |
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58 |
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59 local global_modules = set.new(autoload_modules) + set.new(global_modules_enabled) - set.new(global_modules_disabled); |
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60 if component then |
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61 global_modules = set.intersection(set.new(component_inheritable_modules), global_modules); |
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62 end |
4135
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modulemanager: Fix disabling a module on a single host
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63 local modules = (global_modules + set.new(host_modules_enabled)) - set.new(host_modules_disabled); |
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64 |
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65 -- COMPAT w/ pre 0.8 |
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66 if modules:contains("console") then |
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67 log("error", "The mod_console plugin has been renamed to mod_admin_telnet. Please update your config."); |
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68 modules:remove("console"); |
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69 modules:add("admin_telnet"); |
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70 end |
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71 |
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72 if component then |
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73 load(host, component); |
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74 end |
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75 for module in modules do |
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76 load(host, module); |
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77 end |
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78 end |
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79 prosody.events.add_handler("host-activated", load_modules_for_host); |
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80 prosody.events.add_handler("host-deactivated", function (host) |
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81 modulemap[host] = nil; |
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82 end); |
30 | 83 |
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84 --- Private helpers --- |
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85 |
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86 local function do_unload_module(host, name) |
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87 local mod = get_module(host, name); |
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88 if not mod then return nil, "module-not-loaded"; end |
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89 |
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90 if module_has_method(mod, "unload") then |
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91 local ok, err = call_module_method(mod, "unload"); |
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92 if (not ok) and err then |
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93 log("warn", "Non-fatal error unloading module '%s' on '%s': %s", name, host, err); |
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94 end |
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95 end |
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96 |
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97 for object, event, handler in mod.module.event_handlers:iter(nil, nil, nil) do |
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98 object.remove_handler(event, handler); |
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99 end |
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100 |
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101 if mod.module.items then -- remove items |
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102 local events = (host == "*" and prosody.events) or hosts[host].events; |
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103 for key,t in pairs(mod.module.items) do |
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104 for i = #t,1,-1 do |
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105 local value = t[i]; |
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106 t[i] = nil; |
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107 events.fire_event("item-removed/"..key, {source = mod.module, item = value}); |
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108 end |
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109 end |
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110 end |
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111 mod.module.loaded = false; |
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112 modulemap[host][name] = nil; |
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113 return true; |
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is_loaded() and incomplete unload() for modules
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114 end |
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115 |
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116 local function do_load_module(host, module_name, state) |
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117 if not (host and module_name) then |
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118 return nil, "insufficient-parameters"; |
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119 elseif not hosts[host] and host ~= "*"then |
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120 return nil, "unknown-host"; |
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121 end |
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122 |
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123 if not modulemap[host] then |
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124 modulemap[host] = hosts[host].modules; |
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125 end |
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126 |
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127 if modulemap[host][module_name] then |
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128 if not modulemap["*"][module_name] then |
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129 log("debug", "%s is already loaded for %s, so not loading again", module_name, host); |
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130 end |
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131 return nil, "module-already-loaded"; |
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132 elseif modulemap["*"][module_name] then |
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133 local mod = modulemap["*"][module_name]; |
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134 if module_has_method(mod, "add_host") then |
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135 local _log = logger.init(host..":"..module_name); |
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136 local host_module_api = setmetatable({ |
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137 host = host, event_handlers = new_multitable(), items = {}; |
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138 _log = _log, log = function (self, ...) return _log(...); end; --luacheck: ignore 212/self |
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139 },{ |
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140 __index = modulemap["*"][module_name].module; |
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141 }); |
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142 local host_module = setmetatable({ module = host_module_api }, { __index = mod }); |
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143 host_module_api.environment = host_module; |
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144 modulemap[host][module_name] = host_module; |
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145 local ok, result, module_err = call_module_method(mod, "add_host", host_module_api); |
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146 if not ok or result == false then |
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147 modulemap[host][module_name] = nil; |
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148 return nil, ok and module_err or result; |
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149 end |
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150 return host_module; |
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151 end |
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152 return nil, "global-module-already-loaded"; |
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153 end |
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154 |
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155 |
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156 |
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157 local _log = logger.init(host..":"..module_name); |
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Eliminate direct setfenv usage
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158 local api_instance = setmetatable({ name = module_name, host = host, |
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159 _log = _log, log = function (self, ...) return _log(...); end, --luacheck: ignore 212/self |
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160 event_handlers = new_multitable(), reloading = not not state, |
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161 saved_state = state~=true and state or nil } |
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162 , { __index = api }); |
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|
163 |
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|
164 local pluginenv = setmetatable({ module = api_instance }, { __index = _G }); |
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|
165 api_instance.environment = pluginenv; |
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166 |
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167 local mod, err = pluginloader.load_code(module_name, nil, pluginenv); |
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168 if not mod then |
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169 log("error", "Unable to load module '%s': %s", module_name or "nil", err or "nil"); |
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170 return nil, err; |
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|
171 end |
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172 |
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173 api_instance.path = err; |
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174 |
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175 modulemap[host][module_name] = pluginenv; |
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176 local ok, err = pcall(mod); |
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177 if ok then |
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178 -- Call module's "load" |
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179 if module_has_method(pluginenv, "load") then |
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180 ok, err = call_module_method(pluginenv, "load"); |
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181 if not ok then |
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182 log("warn", "Error loading module '%s' on '%s': %s", module_name, host, err or "nil"); |
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183 end |
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184 end |
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185 api_instance.reloading, api_instance.saved_state = nil, nil; |
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186 |
4639
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187 if api_instance.host == "*" then |
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|
188 if not api_instance.global then -- COMPAT w/pre-0.9 |
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189 if host ~= "*" then |
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|
190 log("warn", "mod_%s: Setting module.host = '*' deprecated, call module:set_global() instead", module_name); |
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191 end |
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192 api_instance:set_global(); |
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193 end |
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194 modulemap[host][module_name] = nil; |
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|
195 modulemap[api_instance.host][module_name] = pluginenv; |
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196 if host ~= api_instance.host and module_has_method(pluginenv, "add_host") then |
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|
197 -- Now load the module again onto the host it was originally being loaded on |
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|
198 ok, err = do_load_module(host, module_name); |
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|
199 end |
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200 end |
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201 end |
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202 if not ok then |
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203 modulemap[api_instance.host][module_name] = nil; |
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204 log("error", "Error initializing module '%s' on '%s': %s", module_name, host, err or "nil"); |
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205 end |
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206 return ok and pluginenv, err; |
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207 end |
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208 |
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209 local function do_reload_module(host, name) |
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210 local mod = get_module(host, name); |
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211 if not mod then return nil, "module-not-loaded"; end |
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212 |
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213 local _mod, err = pluginloader.load_code(name); -- checking for syntax errors |
713
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214 if not _mod then |
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215 log("error", "Unable to load module '%s': %s", name or "nil", err or "nil"); |
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216 return nil, err; |
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217 end |
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218 |
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219 local saved; |
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220 if module_has_method(mod, "save") then |
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221 local ok, ret, err = call_module_method(mod, "save"); |
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222 if ok then |
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223 saved = ret; |
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224 else |
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225 log("warn", "Error saving module '%s:%s' state: %s", host, name, ret); |
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226 if not config.get(host, "force_module_reload") then |
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227 log("warn", "Aborting reload due to error, set force_module_reload to ignore this"); |
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228 return nil, "save-state-failed"; |
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229 else |
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230 log("warn", "Continuing with reload (using the force)"); |
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231 end |
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232 end |
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233 end |
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234 |
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235 mod.module.reloading = true; |
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236 do_unload_module(host, name); |
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237 local ok, err = do_load_module(host, name, saved or true); |
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238 if ok then |
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239 mod = get_module(host, name); |
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240 if module_has_method(mod, "restore") then |
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241 local ok, err = call_module_method(mod, "restore", saved or {}) |
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242 if (not ok) and err then |
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243 log("warn", "Error restoring module '%s' from '%s': %s", name, host, err); |
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244 end |
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245 end |
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246 end |
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247 return ok and mod, err; |
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248 end |
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249 |
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250 --- Public API --- |
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251 |
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252 -- Load a module and fire module-loaded event |
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253 function load(host, name) |
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254 local mod, err = do_load_module(host, name); |
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255 if mod then |
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256 (hosts[mod.module.host] or prosody).events.fire_event("module-loaded", { module = name, host = mod.module.host }); |
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257 end |
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258 return mod, err; |
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259 end |
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260 |
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261 -- Unload a module and fire module-unloaded |
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262 function unload(host, name) |
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263 local ok, err = do_unload_module(host, name); |
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264 if ok then |
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265 (hosts[host] or prosody).events.fire_event("module-unloaded", { module = name, host = host }); |
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266 end |
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267 return ok, err; |
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268 end |
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269 |
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270 function reload(host, name) |
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271 local mod, err = do_reload_module(host, name); |
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272 if mod then |
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273 modulemap[host][name].module.reloading = true; |
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274 (hosts[host] or prosody).events.fire_event("module-reloaded", { module = name, host = host }); |
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275 mod.module.reloading = nil; |
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276 elseif not is_loaded(host, name) then |
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277 (hosts[host] or prosody).events.fire_event("module-unloaded", { module = name, host = host }); |
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278 end |
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279 return mod, err; |
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280 end |
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281 |
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282 function get_module(host, name) |
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283 return modulemap[host] and modulemap[host][name]; |
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284 end |
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285 |
5410
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|
286 function get_items(key, host) |
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287 local result = {}; |
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288 local modules = modulemap[host]; |
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289 if not key or not host or not modules then return nil; end |
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290 |
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291 for _, module in pairs(modules) do |
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292 local mod = module.module; |
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293 if mod.items and mod.items[key] then |
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294 for _, value in ipairs(mod.items[key]) do |
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295 t_insert(result, value); |
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296 end |
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297 end |
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298 end |
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299 |
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300 return result; |
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301 end |
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302 |
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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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303 function get_modules(host) |
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304 return modulemap[host]; |
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305 end |
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306 |
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307 function is_loaded(host, name) |
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308 return modulemap[host] and modulemap[host][name] and true; |
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309 end |
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310 |
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311 function module_has_method(module, method) |
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312 return type(rawget(module.module, method)) == "function"; |
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313 end |
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314 |
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modulemanager: Add get_host_type() API method, and fix up call_module_method to work properly
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315 function call_module_method(module, method, ...) |
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316 local f = rawget(module.module, method); |
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317 if type(f) == "function" then |
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318 return pcall(f, ...); |
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319 else |
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320 return false, "no-such-method"; |
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321 end |
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322 end |
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323 |
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core.*: Remove use of module() function
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324 return { |
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325 load_modules_for_host = load_modules_for_host; |
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326 load = load; |
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327 unload = unload; |
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328 reload = reload; |
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329 get_module = get_module; |
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330 get_items = get_items; |
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331 get_modules = get_modules; |
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332 is_loaded = is_loaded; |
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333 module_has_method = module_has_method; |
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334 call_module_method = call_module_method; |
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335 }; |