annotate mod_storage_mongodb/mod_storage_mongodb.lua @ 4484:6813a00878ea

mod_ogp/README: Annotate example as XML to enable syntax highlighting
author Kim Alvefur <zash@zash.se>
date Tue, 02 Mar 2021 14:17:51 +0100
parents b21236b6b8d8
children
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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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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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10 local json = require "util.json";
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12 local conn
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14 local keyval_store = {};
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15 keyval_store.__index = keyval_store;
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17 function keyval_store:get(username)
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18 local host = module.host or "_global";
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19 local store = self.store;
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21 -- The database name can't have a period in it (hence it can't be a host/ip)
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22 local namespace = params.dbname .. "." .. host;
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23 local v = { _id = { store = store ; username = username } };
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25 local cursor , err = conn:query ( namespace , v );
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26 if not cursor then return nil , err end;
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28 local r , err = cursor:next ( );
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29 if not r then return nil , err end;
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30 return r.data;
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31 end
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33 function keyval_store:set(username, data)
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34 local host = module.host or "_global";
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35 local store = self.store;
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37 -- The database name can't have a period in it (hence it can't be a host/ip)
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38 local namespace = params.dbname .. "." .. host;
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39 local v = { _id = { store = store ; username = username } };
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41 if next(data) ~= nil then -- set data
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42 v.data = data;
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43 return conn:insert ( namespace , json.encode(v) );
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44 else -- delete data
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45 return conn:remove ( namespace , v );
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46 end;
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47 end
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49 local driver = {};
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51 function driver:open(store, typ)
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52 if not conn then
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53 conn = assert ( mongo.Connection.New ( true ) );
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54 assert ( conn:connect ( params.server ) );
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55 if params.username then
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56 assert ( conn:auth ( params ) );
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57 end
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58 end
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60 if not typ then -- default key-value store
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61 return setmetatable({ store = store }, keyval_store);
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62 end;
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63 return nil, "unsupported-store";
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64 end
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66 module:provides("storage", driver);