prosody
f3b172874922
core/storagemanager.lua

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core/storagemanager.lua @ 7109:f3b172874922

Add a CHANGES file with new features in 0.10
author Kim Alvefur <zash@zash.se>
date Thu, 28 Jan 2016 14:14:48 +0100
parent 6951:99de8f30d99e
child 6952:db085e55555f
child 7150:fcaaafe4062f
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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2 local type, pairs = type, pairs;
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3 local setmetatable = setmetatable;
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4
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5 local config = require "core.configmanager";
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6 local datamanager = require "util.datamanager";
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7 local modulemanager = require "core.modulemanager";
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8 local multitable = require "util.multitable";
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9 local hosts = hosts;
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10 local log = require "util.logger".init("storagemanager");
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12 local prosody = prosody;
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14 local _ENV = nil;
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16 local olddm = {}; -- maintain old datamanager, for backwards compatibility
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17 for k,v in pairs(datamanager) do olddm[k] = v; end
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19 local null_storage_method = function () return false, "no data storage active"; end
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20 local null_storage_driver = setmetatable(
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21 {
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22 name = "null",
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23 open = function (self) return self; end
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24 }, {
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25 __index = function (self, method) --luacheck: ignore 212
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26 return null_storage_method;
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27 end
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28 }
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29 );
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31 local stores_available = multitable.new();
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32
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33 local function initialize_host(host)
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34 local host_session = hosts[host];
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35 host_session.events.add_handler("item-added/storage-provider", function (event)
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36 local item = event.item;
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37 stores_available:set(host, item.name, item);
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38 end);
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40 host_session.events.add_handler("item-removed/storage-provider", function (event)
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41 local item = event.item;
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42 stores_available:set(host, item.name, nil);
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43 end);
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44 end
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45 prosody.events.add_handler("host-activated", initialize_host, 101);
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46
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47 local function load_driver(host, driver_name)
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48 if driver_name == "null" then
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49 return null_storage_driver;
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50 end
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51 local driver = stores_available:get(host, driver_name);
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52 if driver then return driver; end
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53 local ok, err = modulemanager.load(host, "storage_"..driver_name);
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54 if not ok then
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55 log("error", "Failed to load storage driver plugin %s on %s: %s", driver_name, host, err);
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56 end
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57 return stores_available:get(host, driver_name);
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58 end
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59
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60 local function get_storage_config(host)
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61 -- COMPAT w/ unreleased Prosody 0.10 and the once-experimental mod_storage_sql2 in peoples' config files
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62 local storage_config = config.get(host, "storage");
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63 local found_sql2;
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64 if storage_config == "sql2" then
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65 storage_config, found_sql2 = "sql", true;
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66 elseif type(storage_config) == "table" then
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67 for store_name, driver_name in pairs(storage_config) do
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68 if driver_name == "sql2" then
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69 storage_config[store_name] = "sql";
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70 found_sql2 = true;
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71 end
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72 end
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73 end
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74 if found_sql2 then
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75 log("error", "The temporary 'sql2' storage module has now been renamed to 'sql', please update your config file: https://prosody.im/doc/modules/mod_storage_sql2");
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76 end
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77 return storage_config;
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78 end
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79
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80 local function get_driver(host, store)
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81 local storage = get_storage_config(host);
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82 local driver_name;
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83 local option_type = type(storage);
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84 if option_type == "string" then
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85 driver_name = storage;
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86 elseif option_type == "table" then
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87 driver_name = storage[store];
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88 end
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89 if not driver_name then
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90 driver_name = config.get(host, "default_storage") or "internal";
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91 end
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92
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93 local driver = load_driver(host, driver_name);
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94 if not driver then
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95 log("warn", "Falling back to null driver for %s storage on %s", store, host);
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96 driver_name = "null";
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97 driver = null_storage_driver;
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98 end
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99 return driver, driver_name;
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100 end
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101
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102 local function open(host, store, typ)
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103 local driver, driver_name = get_driver(host, store);
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104 local ret, err = driver:open(store, typ);
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105 if not ret then
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22fc2063b824 storagemanager: Much refactoring and renaming of options. Untested, needs storage plugin(s) to be brought into line.
Matthew Wild <mwild1@gmail.com>
parents: 3403
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106 if err == "unsupported-store" then
4011
0df6b99cb74a storagemanager: Fix log message (s/internal/null/)
Matthew Wild <mwild1@gmail.com>
parents: 4010
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107 log("debug", "Storage driver %s does not support store %s (%s), falling back to null driver",
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c773aa4467f1 storagemanager: Fix traceback in logging when store type is nil, and store is unsupported.
Waqas Hussain <waqas20@gmail.com>
parents: 5155
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108 driver_name, store, typ or "<nil>");
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21311bd31f6b storagemanager: Add new "null" provider to get used when loading a driver or opening a store fails, instead of falling back to the default driver
Matthew Wild <mwild1@gmail.com>
parents: 4009
diff changeset
109 ret = null_storage_driver;
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parents: 3403
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110 err = nil;
22fc2063b824 storagemanager: Much refactoring and renaming of options. Untested, needs storage plugin(s) to be brought into line.
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parents: 3403
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111 end
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112 end
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parents: 3403
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113 return ret, err;
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114 end
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parents:
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115
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parents: 6663
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116 local function purge(user, host)
6949
1c2c3d913172 storagemanager: Split config retrieval into its own function
Matthew Wild <mwild1@gmail.com>
parents: 6809
diff changeset
117 local storage = get_storage_config(host);
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parents: 5111
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118 if type(storage) == "table" then
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parents: 5111
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119 -- multiple storage backends in use that we need to purge
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parents: 5111
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120 local purged = {};
6809
dd6b21862e3b storagemanager: Check if drivers support purging, warn otherwise
Kim Alvefur <zash@zash.se>
parents: 6807
diff changeset
121 for store, driver_name in pairs(storage) do
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Kim Alvefur <zash@zash.se>
parents: 6807
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122 if not purged[driver_name] then
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Kim Alvefur <zash@zash.se>
parents: 6807
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123 local driver = get_driver(host, store);
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parents: 6807
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124 if driver.purge then
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parents: 6807
diff changeset
125 purged[driver_name] = driver:purge(user);
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Kim Alvefur <zash@zash.se>
parents: 6807
diff changeset
126 else
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parents: 6807
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127 log("warn", "Storage driver %s does not support removing all user data, you may need to delete it manually", driver_name);
dd6b21862e3b storagemanager: Check if drivers support purging, warn otherwise
Kim Alvefur <zash@zash.se>
parents: 6807
diff changeset
128 end
5129
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parents: 5111
diff changeset
129 end
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Kim Alvefur <zash@zash.se>
parents: 5111
diff changeset
130 end
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Kim Alvefur <zash@zash.se>
parents: 5111
diff changeset
131 end
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diff changeset
132 get_driver(host):purge(user); -- and the default driver
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133
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diff changeset
134 olddm.purge(user, host); -- COMPAT list stores, like offline messages end up in the old datamanager
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parents: 5111
diff changeset
135
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Kim Alvefur <zash@zash.se>
parents: 5111
diff changeset
136 return true;
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Kim Alvefur <zash@zash.se>
parents: 5111
diff changeset
137 end
e8253c931166 storagemanager: Add purge() for purging user data from all backends in use
Kim Alvefur <zash@zash.se>
parents: 5111
diff changeset
138
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parents:
diff changeset
139 function datamanager.load(username, host, datastore)
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140 return open(host, datastore):get(username);
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parents:
diff changeset
141 end
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parents:
diff changeset
142 function datamanager.store(username, host, datastore, data)
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143 return open(host, datastore):set(username, data);
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parents:
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144 end
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parents: 5137
diff changeset
145 function datamanager.users(host, datastore, typ)
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Kim Alvefur <zash@zash.se>
parents: 5137
diff changeset
146 local driver = open(host, datastore, typ);
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Kim Alvefur <zash@zash.se>
parents: 5137
diff changeset
147 if not driver.users then
a207d4bff5a4 storagemanager: Support for iterating over users
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parents: 5137
diff changeset
148 return function() log("warn", "storage driver %s does not support listing users", driver.name) end
a207d4bff5a4 storagemanager: Support for iterating over users
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parents: 5137
diff changeset
149 end
a207d4bff5a4 storagemanager: Support for iterating over users
Kim Alvefur <zash@zash.se>
parents: 5137
diff changeset
150 return driver:users();
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Kim Alvefur <zash@zash.se>
parents: 5137
diff changeset
151 end
5130
051d352ed03c storagemanager, datamanager, mod_storage_{internal,sql}: Replace list_stores() with an iterator version
Kim Alvefur <zash@zash.se>
parents: 5129
diff changeset
152 function datamanager.stores(username, host, typ)
051d352ed03c storagemanager, datamanager, mod_storage_{internal,sql}: Replace list_stores() with an iterator version
Kim Alvefur <zash@zash.se>
parents: 5129
diff changeset
153 return get_driver(host):stores(username, typ);
5037
c34fdcae6d29 storagemanager: Add method for listing stores
Kim Alvefur <zash@zash.se>
parents: 5036
diff changeset
154 end
5041
be204204cc5f storagemanager: Add method for removing all data belonging to a user
Kim Alvefur <zash@zash.se>
parents: 5037
diff changeset
155 function datamanager.purge(username, host)
5136
77ea38607a89 storagemanager: Fix argument (Thanks Maranda)
Kim Alvefur <zash@zash.se>
parents: 5133
diff changeset
156 return purge(username, host);
5041
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Kim Alvefur <zash@zash.se>
parents: 5037
diff changeset
157 end
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parents:
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158
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parents: 6663
diff changeset
159 return {
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diff changeset
160 initialize_host = initialize_host;
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diff changeset
161 load_driver = load_driver;
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diff changeset
162 get_driver = get_driver;
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Kim Alvefur <zash@zash.se>
parents: 6663
diff changeset
163 open = open;
6807
5e3242d349f2 storagemanager: Export purge (fixes deleting users from usermanager) (thanks mt)
Kim Alvefur <zash@zash.se>
parents: 6779
diff changeset
164 purge = purge;
6779
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parents: 6663
diff changeset
165
6236668da30a core.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6663
diff changeset
166 olddm = olddm;
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Kim Alvefur <zash@zash.se>
parents: 6663
diff changeset
167 };