author | Matthew Wild <mwild1@gmail.com> |
Mon, 07 Jan 2019 15:34:23 +0000 | |
branch | 0.11 |
changeset 9778 | 4f8b6c09e5f3 |
parent 9613 | 1dfcea523200 |
child 9787 | 4c91afc43639 |
child 9836 | 96d9c121547b |
permissions | -rw-r--r-- |
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local serialize = require "util.serialization".serialize; |
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local array = require "util.array"; |
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local envload = require "util.envload".envload; |
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local st = require "util.stanza"; |
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local is_stanza = st.is_stanza or function (s) return getmetatable(s) == st.stanza_mt end |
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local auto_purge_enabled = module:get_option_boolean("storage_memory_temporary", false); |
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8 |
local auto_purge_stores = module:get_option_set("storage_memory_temporary_stores", {}); |
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9 |
|
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local memory = setmetatable({}, { |
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11 |
__index = function(t, k) |
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local store = module:shared(k) |
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13 |
t[k] = store; |
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14 |
return store; |
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15 |
end |
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16 |
}); |
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18 |
local function NULL() return nil end |
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local function _purge_store(self, username) |
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self.store[username or NULL] = nil; |
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return true; |
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23 |
end |
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25 |
local keyval_store = {}; |
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keyval_store.__index = keyval_store; |
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27 |
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function keyval_store:get(username) |
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return (self.store[username or NULL] or NULL)(); |
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end |
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32 |
function keyval_store:set(username, data) |
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if data ~= nil then |
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data = envload("return "..serialize(data), "=(data)", {}); |
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35 |
end |
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36 |
self.store[username or NULL] = data; |
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37 |
return true; |
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38 |
end |
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39 |
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40 |
keyval_store.purge = _purge_store; |
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local archive_store = {}; |
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archive_store.__index = archive_store; |
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function archive_store:append(username, key, value, when, with) |
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if is_stanza(value) then |
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value = st.preserialize(value); |
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value = envload("return xml"..serialize(value), "=(stanza)", { xml = st.deserialize }) |
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else |
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value = envload("return "..serialize(value), "=(data)", {}); |
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51 |
end |
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52 |
local a = self.store[username or NULL]; |
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if not a then |
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a = {}; |
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self.store[username or NULL] = a; |
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56 |
end |
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57 |
local v = { key = key, when = when, with = with, value = value }; |
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if not key then |
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key = tostring(a):match"%x+$"..tostring(v):match"%x+$"; |
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v.key = key; |
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61 |
end |
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if a[key] then |
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63 |
table.remove(a, a[key]); |
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64 |
end |
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local i = #a+1; |
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a[i] = v; |
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67 |
a[key] = i; |
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68 |
return key; |
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69 |
end |
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|
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71 |
local function archive_iter (a, start, stop, step, limit, when_start, when_end, match_with) |
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72 |
local item, when, with; |
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73 |
local count = 0; |
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74 |
coroutine.yield(true); -- Ready |
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75 |
for i = start, stop, step do |
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76 |
item = a[i]; |
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77 |
when, with = item.when, item.with; |
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78 |
if when >= when_start and when_end >= when and (not match_with or match_with == with) then |
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79 |
coroutine.yield(item.key, item.value(), when, with); |
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80 |
count = count + 1; |
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81 |
if limit and count >= limit then return end |
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82 |
end |
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83 |
end |
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84 |
end |
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85 |
|
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86 |
function archive_store:find(username, query) |
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87 |
local a = self.store[username or NULL] or {}; |
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88 |
local start, stop, step = 1, #a, 1; |
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89 |
local qstart, qend, qwith = -math.huge, math.huge; |
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90 |
local limit; |
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91 |
if query then |
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92 |
module:log("debug", "query included") |
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93 |
if query.reverse then |
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94 |
start, stop, step = stop, start, -1; |
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95 |
if query.before then |
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96 |
start = a[query.before]; |
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97 |
end |
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98 |
elseif query.after then |
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99 |
start = a[query.after]; |
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100 |
end |
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101 |
limit = query.limit; |
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102 |
qstart = query.start or qstart; |
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103 |
qend = query["end"] or qend; |
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104 |
qwith = query.with; |
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105 |
end |
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106 |
if not start then return nil, "invalid-key"; end |
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107 |
local iter = coroutine.wrap(archive_iter); |
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108 |
iter(a, start, stop, step, limit, qstart, qend, qwith); |
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109 |
return iter; |
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110 |
end |
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111 |
|
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112 |
function archive_store:delete(username, query) |
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113 |
if not query or next(query) == nil then |
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114 |
self.store[username or NULL] = nil; |
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115 |
return true; |
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116 |
end |
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117 |
local items = self.store[username or NULL]; |
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118 |
if not items then |
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119 |
-- Store is empty |
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120 |
return 0; |
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121 |
end |
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122 |
items = array(items); |
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123 |
local count_before = #items; |
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124 |
if query then |
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125 |
if query.key then |
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126 |
items:filter(function (item) |
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127 |
return item.key ~= query.key; |
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128 |
end); |
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129 |
end |
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130 |
if query.with then |
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131 |
items:filter(function (item) |
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132 |
return item.with ~= query.with; |
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133 |
end); |
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134 |
end |
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135 |
if query.start then |
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136 |
items:filter(function (item) |
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137 |
return item.when < query.start; |
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138 |
end); |
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139 |
end |
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140 |
if query["end"] then |
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141 |
items:filter(function (item) |
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142 |
return item.when > query["end"]; |
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143 |
end); |
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144 |
end |
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145 |
if query.truncate and #items > query.truncate then |
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146 |
if query.reverse then |
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147 |
-- Before: { 1, 2, 3, 4, 5, } |
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148 |
-- After: { 1, 2, 3 } |
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149 |
for i = #items, query.truncate + 1, -1 do |
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150 |
items[i] = nil; |
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151 |
end |
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152 |
else |
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153 |
-- Before: { 1, 2, 3, 4, 5, } |
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154 |
-- After: { 3, 4, 5 } |
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155 |
local offset = #items - query.truncate; |
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156 |
for i = 1, #items do |
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157 |
items[i] = items[i+offset]; |
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|
158 |
end |
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159 |
end |
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|
160 |
end |
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|
161 |
end |
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|
162 |
local count = count_before - #items; |
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163 |
if count == 0 then |
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164 |
return 0; -- No changes, skip write |
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165 |
end |
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166 |
setmetatable(items, nil); |
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167 |
|
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168 |
do -- re-index by key |
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169 |
for k in pairs(items) do |
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170 |
if type(k) == "string" then |
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171 |
items[k] = nil; |
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|
172 |
end |
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|
173 |
end |
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|
174 |
|
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|
175 |
for i = 1, #items do |
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|
176 |
items[ items[i].key ] = i; |
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|
177 |
end |
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|
178 |
end |
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|
179 |
|
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|
180 |
return count; |
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|
181 |
end |
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|
182 |
|
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|
183 |
archive_store.purge = _purge_store; |
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|
184 |
|
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|
185 |
local stores = { |
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|
186 |
keyval = keyval_store; |
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|
187 |
archive = archive_store; |
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|
188 |
} |
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|
189 |
|
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|
190 |
local driver = {}; |
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|
191 |
|
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|
192 |
function driver:open(store, typ) -- luacheck: ignore 212/self |
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|
193 |
local store_mt = stores[typ or "keyval"]; |
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|
194 |
if store_mt then |
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|
195 |
return setmetatable({ store = memory[store] }, store_mt); |
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|
196 |
end |
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|
197 |
return nil, "unsupported-store"; |
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|
198 |
end |
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|
199 |
|
9613
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|
200 |
function driver:purge(user) -- luacheck: ignore 212/self |
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|
201 |
for _, store in pairs(memory) do |
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202 |
store[user] = nil; |
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|
203 |
end |
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|
204 |
end |
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|
205 |
|
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|
206 |
if auto_purge_enabled then |
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|
207 |
module:hook("resource-unbind", function (event) |
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|
208 |
local user_bare_jid = event.session.username.."@"..event.session.host; |
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|
209 |
if not prosody.bare_sessions[user_bare_jid] then -- User went offline |
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|
210 |
module:log("debug", "Clearing store for offline user %s", user_bare_jid); |
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|
211 |
local f, s, v; |
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|
212 |
if auto_purge_stores:empty() then |
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|
213 |
f, s, v = pairs(memory); |
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|
214 |
else |
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|
215 |
f, s, v = auto_purge_stores:items(); |
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|
216 |
end |
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|
217 |
|
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|
218 |
for store_name in f, s, v do |
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|
219 |
if memory[store_name] then |
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|
220 |
memory[store_name][event.session.username] = nil; |
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end |
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end |
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end |
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end); |
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end |
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|
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module:provides("storage", driver); |