Mercurial > prosody-modules
annotate mod_storage_multi/mod_storage_multi.lua @ 4260:c539334dd01a
mod_http_oauth2: Rescope oauth client config into users' storage
This produces client_id of the form owner@host/random and prevents
clients from being deleted by registering an account with the same name
and then deleting the account, as well as having the client
automatically be deleted when the owner account is removed.
On one hand, this leaks the bare JID of the creator to users. On the
other hand, it makes it obvious who made the oauth application.
This module is experimental and only for developers, so this can be
changed if a better method comes up.
author | Kim Alvefur <zash@zash.se> |
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date | Sat, 21 Nov 2020 23:55:10 +0100 |
parents | 8c4a2d85e8bf |
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1 -- mod_storage_multi |
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2 |
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3 local storagemanager = require"core.storagemanager"; |
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4 local backends = module:get_option_array(module.name); -- TODO better name? |
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5 |
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6 -- TODO migrate data "upwards" |
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7 |
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8 -- one → one successful write is success |
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9 -- all → all backends must report success |
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10 -- majority → majority of backends must report success |
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11 local policy = module:get_option_string(module.name.."_policy", "all"); |
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12 |
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13 local keyval_store = {}; |
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14 keyval_store.__index = keyval_store; |
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15 |
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16 function keyval_store:get(username) |
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17 local backends = self.backends; |
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18 local data, err; |
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19 for i = 1, #backends do |
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20 module:log("debug", "%s:%s:get(%q)", tostring(backends[i].get), backends[i]._store, username); |
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21 data, err = backends[i]:get(username); |
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22 if err then |
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23 module:log("error", tostring(err)); |
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24 elseif not data then |
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25 module:log("debug", "No data returned"); |
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26 else |
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27 module:log("debug", "Data returned"); |
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28 return data, err; |
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29 end |
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30 end |
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31 end |
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32 |
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33 -- This is where it gets complicated |
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34 function keyval_store:set(username, data) |
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35 local backends = self.backends; |
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36 local ok, err, backend; |
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37 local all, one, oks = true, false, 0; |
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38 for i = 1, #backends do |
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39 backend = backends[i]; |
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40 module:log("debug", "%s:%s:set(%q)", tostring(backends[i].get), backends[i].store, username); |
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41 ok, err = backend:set(username, data); |
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42 if not ok then |
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43 module:log("error", "Error in storage driver %s: %s", backend.name, tostring(err)); |
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44 else |
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45 oks = oks + 1; |
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46 end |
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47 one = one or ok; -- At least one successful write |
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48 all = all and ok; -- All successful |
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49 end |
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50 if policy == "all" then |
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51 return all, err |
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52 elseif policy == "majority" then |
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53 return oks > (#backends/2), err; |
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54 end |
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55 -- elseif policy == "one" then |
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56 return one, err; |
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57 end |
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58 |
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59 local stores = { |
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60 keyval = keyval_store; |
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61 } |
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62 |
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63 local driver = {}; |
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64 |
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65 function driver:open(store, typ) |
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66 local store_mt = stores[typ or "keyval"]; |
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67 if store_mt then |
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68 local my_backends = {}; |
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69 local driver, opened |
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70 for i = 1, #backends do |
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71 driver = storagemanager.load_driver(module.host, backends[i]); |
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72 opened = driver:open(store, typ); |
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73 my_backends[i] = assert(driver:open(store, typ)); |
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74 my_backends[i]._store = store; |
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75 end |
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76 return setmetatable({ backends = my_backends }, store_mt); |
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77 end |
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78 return nil, "unsupported-store"; |
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79 end |
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80 |
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81 module:provides("storage", driver); |