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-rw-r--r--plugins/mod_storage_sql.lua226
1 files changed, 226 insertions, 0 deletions
diff --git a/plugins/mod_storage_sql.lua b/plugins/mod_storage_sql.lua
new file mode 100644
index 00000000..fc181710
--- /dev/null
+++ b/plugins/mod_storage_sql.lua
@@ -0,0 +1,226 @@
+
+--[[
+
+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.serialzation".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);