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mod_storage_mongodb/mod_storage_mongodb.lua @ 930:c08b424583c3
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| author | Marco Cirillo <maranda@lightwitch.org> |
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| date | Tue, 12 Mar 2013 19:05:59 +0100 |
| parent | 813:2469f779b3f7 |
| child | 1010:fd420237a5e4 |
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1 local next = next; |
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2 local setmetatable = setmetatable; |
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3 |
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4 local params = assert ( module:get_option("mongodb") , "mongodb configuration not found" ); |
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5 |
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6 prosody.unlock_globals(); |
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7 local mongo = require "mongo"; |
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8 prosody.lock_globals(); |
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9 |
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10 local conn |
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11 |
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12 local keyval_store = {}; |
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13 keyval_store.__index = keyval_store; |
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14 |
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15 function keyval_store:get(username) |
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16 local host = module.host or "_global"; |
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17 local store = self.store; |
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18 |
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19 -- The database name can't have a period in it (hence it can't be a host/ip) |
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20 local namespace = params.dbname .. "." .. host; |
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21 local v = { _id = { store = store ; username = username } }; |
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22 |
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23 local cursor , err = conn:query ( namespace , v ); |
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24 if not cursor then return nil , err end; |
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25 |
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26 local r , err = cursor:next ( ); |
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27 if not r then return nil , err end; |
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28 return r.data; |
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29 end |
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30 |
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31 function keyval_store:set(username, data) |
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32 local host = module.host or "_global"; |
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33 local store = self.store; |
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34 |
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35 -- The database name can't have a period in it (hence it can't be a host/ip) |
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36 local namespace = params.dbname .. "." .. host; |
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37 local v = { _id = { store = store ; username = username } }; |
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38 |
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39 if next(data) ~= nil then -- set data |
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40 v.data = data; |
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41 return conn:insert ( namespace , v ); |
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42 else -- delete data |
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43 return conn:remove ( namespace , v ); |
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44 end; |
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45 end |
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46 |
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47 local driver = {}; |
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48 |
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49 function driver:open(store, typ) |
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50 if not conn then |
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51 conn = assert ( mongo.Connection.New ( true ) ); |
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52 assert ( conn:connect ( params.server ) ); |
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53 if params.username then |
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54 assert ( conn:auth ( params ) ); |
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55 end |
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56 end |
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57 |
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58 if not typ then -- default key-value store |
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59 return setmetatable({ store = store }, keyval_store); |
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60 end; |
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61 return nil, "unsupported-store"; |
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62 end |
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63 |
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64 module:provides("storage", driver); |
