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core/storagemanager.lua @ 9985:46c038969eb3
mod_mimicking: Use more intuitive term "mimicry index" for skeletons
Fits better with the module name too.
author | Kim Alvefur <zash@zash.se> |
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date | Mon, 29 Apr 2019 17:26:56 +0200 |
parent | 8717:9ddd0fbbe53a |
child | 10679:b50b1eae711c |
rev | line source |
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1 |
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2 local type, pairs = type, pairs; |
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3 local setmetatable = setmetatable; |
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4 local rawset = rawset; |
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5 |
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6 local config = require "core.configmanager"; |
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7 local datamanager = require "util.datamanager"; |
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8 local modulemanager = require "core.modulemanager"; |
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9 local multitable = require "util.multitable"; |
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10 local log = require "util.logger".init("storagemanager"); |
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11 local async = require "util.async"; |
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12 local debug = debug; |
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13 |
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14 local prosody = prosody; |
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15 local hosts = prosody.hosts; |
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16 |
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17 local _ENV = nil; |
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18 -- luacheck: std none |
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19 |
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20 local olddm = {}; -- maintain old datamanager, for backwards compatibility |
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21 for k,v in pairs(datamanager) do olddm[k] = v; end |
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22 |
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23 local null_storage_method = function () return false, "no data storage active"; end |
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24 local null_storage_driver = setmetatable( |
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25 { |
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26 name = "null", |
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27 open = function (self) return self; end |
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28 }, { |
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29 __index = function (self, method) --luacheck: ignore 212 |
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30 return null_storage_method; |
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31 end |
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32 } |
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33 ); |
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34 |
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35 local async_check = config.get("*", "storage_async_check") == true; |
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36 |
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37 local stores_available = multitable.new(); |
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38 |
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39 local function check_async_wrapper(event) |
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40 local store = event.store; |
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41 event.store = setmetatable({}, { |
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42 __index = function (t, method_name) |
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43 local original_method = store[method_name]; |
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44 if type(original_method) ~= "function" then |
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45 if original_method then |
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46 rawset(t, method_name, original_method); |
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47 end |
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48 return original_method; |
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49 end |
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50 local wrapped_method = function (...) |
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51 if not async.ready() then |
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52 log("warn", "ASYNC-01: Attempt to access storage outside async context, " |
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53 .."see https://prosody.im/doc/developers/async - %s", debug.traceback()); |
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54 end |
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55 return original_method(...); |
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56 end |
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57 rawset(t, method_name, wrapped_method); |
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58 return wrapped_method; |
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59 end; |
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60 }); |
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61 end |
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62 |
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63 local function initialize_host(host) |
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64 local host_session = hosts[host]; |
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65 host_session.events.add_handler("item-added/storage-provider", function (event) |
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66 local item = event.item; |
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67 stores_available:set(host, item.name, item); |
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68 end); |
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69 |
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70 host_session.events.add_handler("item-removed/storage-provider", function (event) |
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71 local item = event.item; |
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72 stores_available:set(host, item.name, nil); |
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73 end); |
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74 if async_check then |
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75 host_session.events.add_handler("store-opened", check_async_wrapper); |
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76 end |
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77 end |
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78 prosody.events.add_handler("host-activated", initialize_host, 101); |
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79 |
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80 local function load_driver(host, driver_name) |
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81 if driver_name == "null" then |
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82 return null_storage_driver; |
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83 end |
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84 local driver = stores_available:get(host, driver_name); |
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85 if driver then return driver; end |
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86 local ok, err = modulemanager.load(host, "storage_"..driver_name); |
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87 if not ok then |
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88 log("error", "Failed to load storage driver plugin %s on %s: %s", driver_name, host, err); |
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89 end |
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90 return stores_available:get(host, driver_name); |
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91 end |
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92 |
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93 local function get_storage_config(host) |
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94 -- COMPAT w/ unreleased Prosody 0.10 and the once-experimental mod_storage_sql2 in peoples' config files |
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95 local storage_config = config.get(host, "storage"); |
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96 local found_sql2; |
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97 if storage_config == "sql2" then |
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98 storage_config, found_sql2 = "sql", true; |
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99 elseif type(storage_config) == "table" then |
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100 for store_name, driver_name in pairs(storage_config) do |
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storagemanager, mod_storage_sql, mod_storage_sql2: Rename mod_storage_sql2 -> mod_storage_sql, mod_storage_sql -> mod_storage_sql1 (temporarily), and emit warning for configs using sql2
Matthew Wild <mwild1@gmail.com>
parents:
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|
101 if driver_name == "sql2" then |
99de8f30d99e
storagemanager, mod_storage_sql, mod_storage_sql2: Rename mod_storage_sql2 -> mod_storage_sql, mod_storage_sql -> mod_storage_sql1 (temporarily), and emit warning for configs using sql2
Matthew Wild <mwild1@gmail.com>
parents:
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diff
changeset
|
102 storage_config[store_name] = "sql"; |
99de8f30d99e
storagemanager, mod_storage_sql, mod_storage_sql2: Rename mod_storage_sql2 -> mod_storage_sql, mod_storage_sql -> mod_storage_sql1 (temporarily), and emit warning for configs using sql2
Matthew Wild <mwild1@gmail.com>
parents:
6949
diff
changeset
|
103 found_sql2 = true; |
99de8f30d99e
storagemanager, mod_storage_sql, mod_storage_sql2: Rename mod_storage_sql2 -> mod_storage_sql, mod_storage_sql -> mod_storage_sql1 (temporarily), and emit warning for configs using sql2
Matthew Wild <mwild1@gmail.com>
parents:
6949
diff
changeset
|
104 end |
99de8f30d99e
storagemanager, mod_storage_sql, mod_storage_sql2: Rename mod_storage_sql2 -> mod_storage_sql, mod_storage_sql -> mod_storage_sql1 (temporarily), and emit warning for configs using sql2
Matthew Wild <mwild1@gmail.com>
parents:
6949
diff
changeset
|
105 end |
99de8f30d99e
storagemanager, mod_storage_sql, mod_storage_sql2: Rename mod_storage_sql2 -> mod_storage_sql, mod_storage_sql -> mod_storage_sql1 (temporarily), and emit warning for configs using sql2
Matthew Wild <mwild1@gmail.com>
parents:
6949
diff
changeset
|
106 end |
99de8f30d99e
storagemanager, mod_storage_sql, mod_storage_sql2: Rename mod_storage_sql2 -> mod_storage_sql, mod_storage_sql -> mod_storage_sql1 (temporarily), and emit warning for configs using sql2
Matthew Wild <mwild1@gmail.com>
parents:
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diff
changeset
|
107 if found_sql2 then |
7947
24170d74b00b
core: Split some very long lines [luacheck]
Kim Alvefur <zash@zash.se>
parents:
7645
diff
changeset
|
108 log("error", "The temporary 'sql2' storage module has now been renamed to 'sql', " |
24170d74b00b
core: Split some very long lines [luacheck]
Kim Alvefur <zash@zash.se>
parents:
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diff
changeset
|
109 .."please update your config file: https://prosody.im/doc/modules/mod_storage_sql2"); |
6951
99de8f30d99e
storagemanager, mod_storage_sql, mod_storage_sql2: Rename mod_storage_sql2 -> mod_storage_sql, mod_storage_sql -> mod_storage_sql1 (temporarily), and emit warning for configs using sql2
Matthew Wild <mwild1@gmail.com>
parents:
6949
diff
changeset
|
110 end |
99de8f30d99e
storagemanager, mod_storage_sql, mod_storage_sql2: Rename mod_storage_sql2 -> mod_storage_sql, mod_storage_sql -> mod_storage_sql1 (temporarily), and emit warning for configs using sql2
Matthew Wild <mwild1@gmail.com>
parents:
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changeset
|
111 return storage_config; |
6949
1c2c3d913172
storagemanager: Split config retrieval into its own function
Matthew Wild <mwild1@gmail.com>
parents:
6809
diff
changeset
|
112 end |
1c2c3d913172
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Matthew Wild <mwild1@gmail.com>
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diff
changeset
|
113 |
6779
6236668da30a
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Kim Alvefur <zash@zash.se>
parents:
6663
diff
changeset
|
114 local function get_driver(host, store) |
6949
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Matthew Wild <mwild1@gmail.com>
parents:
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|
115 local storage = get_storage_config(host); |
3644
22fc2063b824
storagemanager: Much refactoring and renaming of options. Untested, needs storage plugin(s) to be brought into line.
Matthew Wild <mwild1@gmail.com>
parents:
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changeset
|
116 local driver_name; |
22fc2063b824
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Matthew Wild <mwild1@gmail.com>
parents:
3403
diff
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|
117 local option_type = type(storage); |
22fc2063b824
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Matthew Wild <mwild1@gmail.com>
parents:
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|
118 if option_type == "string" then |
22fc2063b824
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Matthew Wild <mwild1@gmail.com>
parents:
3403
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changeset
|
119 driver_name = storage; |
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Matthew Wild <mwild1@gmail.com>
parents:
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diff
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|
120 elseif option_type == "table" then |
22fc2063b824
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parents:
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changeset
|
121 driver_name = storage[store]; |
22fc2063b824
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Matthew Wild <mwild1@gmail.com>
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changeset
|
122 end |
4085
7699cef04740
storagemanager, mod_storage_internal: Split out default driver to mod_storage_internal, and greatly simplify storagemanager's error handling and fallback code
Matthew Wild <mwild1@gmail.com>
parents:
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diff
changeset
|
123 if not driver_name then |
5131
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storagemanager: Remove usage of 'core' when calling configmanager.get()
Matthew Wild <mwild1@gmail.com>
parents:
5130
diff
changeset
|
124 driver_name = config.get(host, "default_storage") or "internal"; |
4085
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storagemanager, mod_storage_internal: Split out default driver to mod_storage_internal, and greatly simplify storagemanager's error handling and fallback code
Matthew Wild <mwild1@gmail.com>
parents:
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diff
changeset
|
125 end |
5776
bd0ff8ae98a8
Remove all trailing whitespace
Florian Zeitz <florob@babelmonkeys.de>
parents:
5502
diff
changeset
|
126 |
3644
22fc2063b824
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parents:
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|
127 local driver = load_driver(host, driver_name); |
22fc2063b824
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Matthew Wild <mwild1@gmail.com>
parents:
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|
128 if not driver then |
4085
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changeset
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129 log("warn", "Falling back to null driver for %s storage on %s", store, host); |
7699cef04740
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parents:
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|
130 driver_name = "null"; |
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parents:
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|
131 driver = null_storage_driver; |
3644
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Matthew Wild <mwild1@gmail.com>
parents:
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diff
changeset
|
132 end |
5036
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Kim Alvefur <zash@zash.se>
parents:
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|
133 return driver, driver_name; |
5110
72a7427368f8
storagemanager: Fix indentation
Kim Alvefur <zash@zash.se>
parents:
5041
diff
changeset
|
134 end |
72a7427368f8
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Kim Alvefur <zash@zash.se>
parents:
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diff
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|
135 |
7150
fcaaafe4062f
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daurnimator <quae@daurnimator.com>
parents:
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changeset
|
136 local map_shim_mt = { |
fcaaafe4062f
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daurnimator <quae@daurnimator.com>
parents:
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diff
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|
137 __index = { |
fcaaafe4062f
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parents:
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diff
changeset
|
138 get = function(self, username, key) |
fcaaafe4062f
storagemanager: When map store isn't available, fallback to keyval store [backported from trunk]
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diff
changeset
|
139 local ret, err = self.keyval_store:get(username); |
7151
584d5229cb91
storagemanager: Fix map store shim if store is empty
Kim Alvefur <zash@zash.se>
parents:
7150
diff
changeset
|
140 if ret == nil then return nil, err end |
7150
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changeset
|
141 return ret[key]; |
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diff
changeset
|
142 end; |
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diff
changeset
|
143 set = function(self, username, key, data) |
fcaaafe4062f
storagemanager: When map store isn't available, fallback to keyval store [backported from trunk]
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diff
changeset
|
144 local current, err = self.keyval_store:get(username); |
fcaaafe4062f
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diff
changeset
|
145 if current == nil then |
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diff
changeset
|
146 if err then |
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diff
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|
147 return nil, err; |
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changeset
|
148 else |
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|
149 current = {}; |
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|
150 end |
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|
151 end |
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diff
changeset
|
152 current[key] = data; |
fcaaafe4062f
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|
153 return self.keyval_store:set(username, current); |
fcaaafe4062f
storagemanager: When map store isn't available, fallback to keyval store [backported from trunk]
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diff
changeset
|
154 end; |
7152
ca64255bf7cd
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Kim Alvefur <zash@zash.se>
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diff
changeset
|
155 set_keys = function (self, username, keydatas) |
ca64255bf7cd
storagemanager: Add set_keys method to map store shim
Kim Alvefur <zash@zash.se>
parents:
7151
diff
changeset
|
156 local current, err = self.keyval_store:get(username); |
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storagemanager: Add set_keys method to map store shim
Kim Alvefur <zash@zash.se>
parents:
7151
diff
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|
157 if current == nil then |
ca64255bf7cd
storagemanager: Add set_keys method to map store shim
Kim Alvefur <zash@zash.se>
parents:
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diff
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|
158 if err then |
ca64255bf7cd
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Kim Alvefur <zash@zash.se>
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diff
changeset
|
159 return nil, err; |
ca64255bf7cd
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parents:
7151
diff
changeset
|
160 end |
7244
8c6943918279
storagemanager: Fix saving data in map shim when no prior data exists
Kim Alvefur <zash@zash.se>
parents:
7152
diff
changeset
|
161 current = {}; |
8c6943918279
storagemanager: Fix saving data in map shim when no prior data exists
Kim Alvefur <zash@zash.se>
parents:
7152
diff
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|
162 end |
8c6943918279
storagemanager: Fix saving data in map shim when no prior data exists
Kim Alvefur <zash@zash.se>
parents:
7152
diff
changeset
|
163 for k,v in pairs(keydatas) do |
8c6943918279
storagemanager: Fix saving data in map shim when no prior data exists
Kim Alvefur <zash@zash.se>
parents:
7152
diff
changeset
|
164 if v == self.remove then v = nil; end |
8c6943918279
storagemanager: Fix saving data in map shim when no prior data exists
Kim Alvefur <zash@zash.se>
parents:
7152
diff
changeset
|
165 current[k] = v; |
7152
ca64255bf7cd
storagemanager: Add set_keys method to map store shim
Kim Alvefur <zash@zash.se>
parents:
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diff
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|
166 end |
ca64255bf7cd
storagemanager: Add set_keys method to map store shim
Kim Alvefur <zash@zash.se>
parents:
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diff
changeset
|
167 return self.keyval_store:set(username, current); |
ca64255bf7cd
storagemanager: Add set_keys method to map store shim
Kim Alvefur <zash@zash.se>
parents:
7151
diff
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|
168 end; |
ca64255bf7cd
storagemanager: Add set_keys method to map store shim
Kim Alvefur <zash@zash.se>
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diff
changeset
|
169 remove = {}; |
7150
fcaaafe4062f
storagemanager: When map store isn't available, fallback to keyval store [backported from trunk]
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|
170 }; |
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|
171 } |
fcaaafe4062f
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|
172 |
6792
8b284787fe26
storagemanager: Add forward declaration to fix use of open() before it's defined
Kim Alvefur <zash@zash.se>
parents:
6791
diff
changeset
|
173 local open; -- forward declaration |
7150
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|
174 |
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changeset
|
175 local function create_map_shim(host, store) |
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storagemanager: When map store isn't available, fallback to keyval store [backported from trunk]
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diff
changeset
|
176 local keyval_store, err = open(host, store, "keyval"); |
fcaaafe4062f
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diff
changeset
|
177 if keyval_store == nil then return nil, err end |
fcaaafe4062f
storagemanager: When map store isn't available, fallback to keyval store [backported from trunk]
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diff
changeset
|
178 return setmetatable({ |
fcaaafe4062f
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diff
changeset
|
179 keyval_store = keyval_store; |
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|
180 }, map_shim_mt); |
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|
181 end |
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|
182 |
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diff
changeset
|
183 function open(host, store, typ) |
5036
be33164aa97e
storagemanager: Split out driver choosing from the open() method
Kim Alvefur <zash@zash.se>
parents:
4758
diff
changeset
|
184 local driver, driver_name = get_driver(host, store); |
3644
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
diff
changeset
|
185 local ret, err = driver:open(store, typ); |
3401
2387f35db5c8
storagemanager: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff
changeset
|
186 if not ret then |
3644
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
diff
changeset
|
187 if err == "unsupported-store" then |
7150
fcaaafe4062f
storagemanager: When map store isn't available, fallback to keyval store [backported from trunk]
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diff
changeset
|
188 if typ == "map" then -- Use shim on top of keyval store |
fcaaafe4062f
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diff
changeset
|
189 log("debug", "map storage driver unavailable, using shim on top of keyval store."); |
7643
44fe2aaf817e
storagemanager: Simplify function flow
Matthew Wild <mwild1@gmail.com>
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diff
changeset
|
190 ret, err = create_map_shim(host, store); |
44fe2aaf817e
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diff
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|
191 else |
44fe2aaf817e
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parents:
7325
diff
changeset
|
192 log("debug", "Storage driver %s does not support store %s (%s), falling back to null driver", |
44fe2aaf817e
storagemanager: Simplify function flow
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parents:
7325
diff
changeset
|
193 driver_name, store, typ or "<nil>"); |
44fe2aaf817e
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parents:
7325
diff
changeset
|
194 ret, err = null_storage_driver, nil; |
7150
fcaaafe4062f
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parents:
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|
195 end |
3644
22fc2063b824
storagemanager: Much refactoring and renaming of options. Untested, needs storage plugin(s) to be brought into line.
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parents:
3403
diff
changeset
|
196 end |
3401
2387f35db5c8
storagemanager: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff
changeset
|
197 end |
7644
90a4790c2329
storagemanager: Fire event when opening a store, and allow the returned store/err to be overridden
Matthew Wild <mwild1@gmail.com>
parents:
7643
diff
changeset
|
198 if ret then |
90a4790c2329
storagemanager: Fire event when opening a store, and allow the returned store/err to be overridden
Matthew Wild <mwild1@gmail.com>
parents:
7643
diff
changeset
|
199 local event_data = { host = host, store_name = store, store_type = typ, store = ret }; |
7994
3325ac397f17
storagemanager: Use the existing local reference to 'hosts'
Kim Alvefur <zash@zash.se>
parents:
7947
diff
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200 hosts[host].events.fire_event("store-opened", event_data); |
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201 ret, err = event_data.store, event_data.store_err; |
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202 end |
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203 return ret, err; |
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204 end |
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205 |
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206 local function purge(user, host) |
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207 local storage = get_storage_config(host); |
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208 if type(storage) == "table" then |
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209 -- multiple storage backends in use that we need to purge |
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210 local purged = {}; |
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211 for store, driver_name in pairs(storage) do |
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212 if not purged[driver_name] then |
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213 local driver = get_driver(host, store); |
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214 if driver.purge then |
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215 purged[driver_name] = driver:purge(user); |
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216 else |
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217 log("warn", "Storage driver %s does not support removing all user data, " |
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218 .."you may need to delete it manually", driver_name); |
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219 end |
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220 end |
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221 end |
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222 end |
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223 get_driver(host):purge(user); -- and the default driver |
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224 |
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225 olddm.purge(user, host); -- COMPAT list stores, like offline messages end up in the old datamanager |
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226 |
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227 return true; |
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228 end |
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229 |
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230 function datamanager.load(username, host, datastore) |
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231 return open(host, datastore):get(username); |
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232 end |
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233 function datamanager.store(username, host, datastore, data) |
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234 return open(host, datastore):set(username, data); |
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235 end |
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236 function datamanager.users(host, datastore, typ) |
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237 local driver = open(host, datastore, typ); |
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238 if not driver.users then |
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239 return function() log("warn", "Storage driver %s does not support listing users", driver.name) end |
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240 end |
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241 return driver:users(); |
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242 end |
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243 function datamanager.stores(username, host, typ) |
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244 return get_driver(host):stores(username, typ); |
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245 end |
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246 function datamanager.purge(username, host) |
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247 return purge(username, host); |
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248 end |
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249 |
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250 return { |
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251 initialize_host = initialize_host; |
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252 load_driver = load_driver; |
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253 get_driver = get_driver; |
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254 open = open; |
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255 purge = purge; |
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256 |
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257 olddm = olddm; |
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258 }; |