aboutsummaryrefslogtreecommitdiffstats
path: root/plugins/mod_storage_sql.lua
blob: 2981013b15fc6fd0abe5fbf37aaa218e24ea0527 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226

--[[

DB Tables:
	Prosody - key-value, map
		| host | user | store | key | subkey | type | value |
	ProsodyArchive - list
		| host | user | store | key | time | stanzatype | jsonvalue |

Mapping:
	Roster - Prosody
		| host | user | "roster" | "contactjid" | item-subkey | type | value |
		| host | user | "roster" | NULL | NULL | "json" | roster[false] data |
	Account - Prosody
		| host | user | "accounts" | "username" | NULL | type | value |

	Offline - ProsodyArchive
		| host | user | "offline" | "contactjid" | time | "message" | json|XML |

]]

local type = type;
local tostring = tostring;
local tonumber = tonumber;
local pairs = pairs;
local next = next;
local setmetatable = setmetatable;
local json = { stringify = function(s) return require"util.serialization".serialize(s) end, parse = require"util.serialization".deserialze };

local connection = ...;
local host,user,store = module.host;

do -- process options to get a db connection
	local DBI = require "DBI";

	local params = module:get_option("sql");
	assert(params and params.driver and params.database, "invalid params");
	
	prosody.unlock_globals();
	local dbh, err = DBI.Connect(
		params.driver, params.database,
		params.username, params.password,
		params.host, params.port
	);
	prosody.lock_globals();
	assert(dbh, err);

	dbh:autocommit(false); -- don't commit automatically
	connection = dbh;
end

local function serialize(value)
	local t = type(value);
	if t == "string" or t == "boolean" or t == "number" then
		return t, tostring(value);
	elseif t == "table" then
		local value,err = json.stringify(value);
		if value then return "json", value; end
		return nil, err;
	end
	return nil, "Unhandled value type: "..t;
end
local function deserialize(t, value)
	if t == "string" then return t;
	elseif t == "boolean" then
		if value == "true" then return true;
		elseif value == "false" then return false; end
	elseif t == "number" then return tonumber(value);
	elseif value == "json" then
		return json.parse(value);
	end
end

local function getsql(sql, ...)
	-- do prepared statement stuff
	local stmt, err = connection:prepare(sql);
	if not stmt then return nil, err; end
	-- run query
	local ok, err = stmt:execute(host, user, store, ...);
	if not ok then return nil, err; end
	
	return stmt;
end
local function setsql(sql, ...)
	local stmt, err = getsql(sql, ...);
	if not stmt then return stmt, err; end
	return stmt:affected();
end
local function transact(...)
	-- ...
end
local function rollback(...)
	connection:rollback(); -- FIXME check for rollback error?
	return ...;
end
local function commit(...)
	if not connection:commit() then return nil, "SQL commit failed"; end
	return ...;
end

local keyval_store = {};
keyval_store.__index = keyval_store;
function keyval_store:get(username)
	user,store = username,self.store;
	local stmt, err = getsql("SELECT * FROM Prosody WHERE host=? AND user=? AND store=? AND subkey=NULL");
	if not stmt then return nil, err; end
	
	local haveany;
	local result = {};
	for row in stmt:rows(true) do
		haveany = true;
		local k = row.key;
		local v = deserialize(row.type, row.value);
		if v then
			if k then result[k] = v; elseif type(v) == "table" then
				for a,b in pairs(v) do
					result[a] = b;
				end
			end
		end
	end
	return haveany and result or nil;
end
function keyval_store:set(username, data)
	user,store = username,self.store;
	-- start transaction
	local affected, err = setsql("DELETE FROM Prosody WHERE host=? AND user=? AND store=? AND subkey=NULL");
	
	if data and next(data) ~= nil then
		local extradata = {};
		for key, value in pairs(data) do
			if type(key) == "string" then
				local t, value = serialize(value);
				if not t then return rollback(t, value); end
				local ok, err = setsql("INSERT INTO Prosody (host,user,store,key,type,value) VALUES (?,?,?,?,?,?)", key, t, value);
				if not ok then return rollback(ok, err); end
			else
				extradata[key] = value;
			end
		end
		if next(extradata) ~= nil then
			local t, extradata = serialize(extradata);
			if not t then return rollback(t, extradata); end
			local ok, err = setsql("INSERT INTO Prosody (host,user,store,key,type,value) VALUES (?,?,?,?,?,?)", nil, t, extradata);
			if not ok then return rollback(ok, err); end
		end
	end
	return commit(true);
end

local map_store = {};
map_store.__index = map_store;
function map_store:get(username, key)
	user,store = username,self.store;
	local stmt, err = getsql("SELECT * FROM Prosody WHERE host=? AND user=? AND store=? AND key=?", key);
	if not stmt then return nil, err; end
	
	local haveany;
	local result = {};
	for row in stmt:rows(true) do
		haveany = true;
		local k = row.subkey;
		local v = deserialize(row.type, row.value);
		if v then
			if k then result[k] = v; elseif type(v) == "table" then
				for a,b in pairs(v) do
					result[a] = b;
				end
			end
		end
	end
	return haveany and result or nil;
end
function map_store:set(username, key, data)
	user,store = username,self.store;
	-- start transaction
	local affected, err = setsql("DELETE FROM Prosody WHERE host=? AND user=? AND store=? AND key=?", key);
	
	if data and next(data) ~= nil then
		local extradata = {};
		for subkey, value in pairs(data) do
			if type(subkey) == "string" then
				local t, value = serialize(value);
				if not t then return rollback(t, value); end
				local ok, err = setsql("INSERT INTO Prosody (host,user,store,key,subkey,type,value) VALUES (?,?,?,?,?,?)", key, subkey, t, value);
				if not ok then return rollback(ok, err); end
			else
				extradata[subkey] = value;
			end
		end
		if next(extradata) ~= nil then
			local t, extradata = serialize(extradata);
			if not t then return rollback(t, extradata); end
			local ok, err = setsql("INSERT INTO Prosody (host,user,store,key,subkey,type,value) VALUES (?,?,?,?,?,?)", key, nil, t, extradata);
			if not ok then return rollback(ok, err); end
		end
	end
	return commit(true);
end

local list_store = {};
list_store.__index = list_store;
function list_store:scan(username, from, to, jid, typ)
	user,store = username,self.store;
	
	local cols = {"from", "to", "jid", "typ"};
	local vals = { from ,  to ,  jid ,  typ };
	local stmt, err;
	local query = "SELECT * FROM ProsodyArchive WHERE host=? AND user=? AND store=?";
	
	query = query.." ORDER BY time";
	--local stmt, err = getsql("SELECT * FROM Prosody WHERE host=? AND user=? AND store=? AND key=?", key);
	
	return nil, "not-implemented"
end

local driver = { name = "sql" };

function driver:open(store, typ)
	if not typ then -- default key-value store
		return setmetatable({ store = store }, keyval_store);
	end
	return nil, "unsupported-store";
end

module:add_item("data-driver", driver);