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annotate mod_couchdb/couchdb/couchdb.lib.lua @ 3922:ea59c9455f93

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mod_rest: Move dataforms into structure for more logical code order Needs that `local x; x = ...` trick to make the mapping table be in scope for all the inner functions.
author Kim Alvefur <zash@zash.se>
date Fri, 28 Feb 2020 22:24:49 +0100
parents 316d7c8e1fb0
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1
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2 local http = require "socket.http";
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3 local url = require "socket.url";
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4
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5 local couchapi = module:require("couchdb/couchapi");
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6 local json = module:require("couchdb/json");
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7
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8 local couchdb_url = assert(module:get_option("couchdb_url"), "Option couchdb_url not specified");
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9 local db = couchapi.db(couchdb_url);
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10
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11 local function couchdb_get(key)
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12 local a,b = db:doc(key):get()
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13 print(json.encode(a));
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14 if b == 404 then return nil; end
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15 if b == 200 then b = nil; end
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16 return a.payload,b;
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17 end
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18
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19 local function couchdb_put(key, value)
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20 local a,b = db:doc(key):get();
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21 return db:doc(key):put({ payload = value, _rev = a and a._rev });
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22 end
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23
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24 local st = require "util.stanza";
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25
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26 local handlers = {};
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27
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28 handlers.accounts = {
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29 get = function(self, user)
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30 return couchdb_get(self.host.."/"..user.."/account");
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31 end;
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32 set = function(self, user, data)
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33 return couchdb_put(self.host.."/"..user.."/account", data);
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34 end;
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35 };
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36 handlers.vcard = {
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37 get = function(self, user)
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38 return couchdb_get(self.host.."/"..user.."/vcard");
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39 end;
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40 set = function(self, user, data)
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41 return couchdb_put(self.host.."/"..user.."/vcard", data);
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42 end;
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43 };
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44 handlers.private = {
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45 get = function(self, user)
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46 return couchdb_get(self.host.."/"..user.."/private");
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47 end;
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48 set = function(self, user, data)
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49 return couchdb_put(self.host.."/"..user.."/private", data);
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50 end;
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51 };
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52 handlers.roster = {
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53 get = function(self, user)
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54 return couchdb_get(self.host.."/"..user.."/roster");
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55 end;
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56 set = function(self, user, data)
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57 return couchdb_put(self.host.."/"..user.."/roster", data);
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58 end;
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59 };
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60
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61 -----------------------------
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62 local driver = {};
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63 driver.__index = driver;
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64
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65 function driver:open(host, datastore, typ)
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66 local cache_key = host.." "..datastore;
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67 if self.ds_cache[cache_key] then return self.ds_cache[cache_key]; end
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68 local instance = setmetatable({}, self);
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69 instance.host = host;
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70 instance.datastore = datastore;
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71 local handler = handlers[datastore];
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72 if not handler then return nil; end
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73 for key,val in pairs(handler) do
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74 instance[key] = val;
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75 end
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76 if instance.init then instance:init(); end
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77 self.ds_cache[cache_key] = instance;
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78 return instance;
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79 end
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80
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81 -----------------------------
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82 local _M = {};
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83
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84 function _M.new()
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85 local instance = setmetatable({}, driver);
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86 instance.__index = instance;
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87 instance.ds_cache = {};
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88 return instance;
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89 end
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90
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91 return _M;