+local archive_store = {}
+archive_store.__index = archive_store
+function archive_store:append(username, key, when, with, value)
+ if value == nil then -- COMPAT early versions
+ when, with, value, key = key, when, with, value
+ end
+ local user,store = username,self.store;
+ return engine:transaction(function()
+ if key then
+ engine:delete("DELETE FROM `prosodyarchive` WHERE `host`=? AND `user`=? AND `store`=? AND `key`=?", host, user or "", store, key);
+ else
+ key = uuid.generate();
+ end
+ local t, value = serialize(value);
+ engine:insert("INSERT INTO `prosodyarchive` (`host`, `user`, `store`, `when`, `with`, `key`, `type`, `value`) VALUES (?,?,?,?,?,?,?,?)", host, user or "", store, when, with, key, t, value);
+ return key;
+ end);
+end
+
+-- Helpers for building the WHERE clause
+local function archive_where(query, args, where)
+ -- Time range, inclusive
+ if query.start then
+ args[#args+1] = query.start
+ where[#where+1] = "`when` >= ?"
+ end
+
+ if query["end"] then
+ args[#args+1] = query["end"];
+ if query.start then
+ where[#where] = "`when` BETWEEN ? AND ?" -- is this inclusive?
+ else
+ where[#where+1] = "`when` <= ?"
+ end
+ end
+
+ -- Related name
+ if query.with then
+ where[#where+1] = "`with` = ?";
+ args[#args+1] = query.with
+ end
+
+ -- Unique id
+ if query.key then
+ where[#where+1] = "`key` = ?";
+ args[#args+1] = query.key
+ end
+end
+local function archive_where_id_range(query, args, where)
+ local args_len = #args
+ -- Before or after specific item, exclusive
+ if query.after then -- keys better be unique!
+ where[#where+1] = "`sort_id` > (SELECT `sort_id` FROM `prosodyarchive` WHERE `key` = ? AND `host` = ? AND `user` = ? AND `store` = ? LIMIT 1)"
+ args[args_len+1], args[args_len+2], args[args_len+3], args[args_len+4] = query.after, args[1], args[2], args[3];
+ args_len = args_len + 4
+ end
+ if query.before then
+ where[#where+1] = "`sort_id` < (SELECT `sort_id` FROM `prosodyarchive` WHERE `key` = ? AND `host` = ? AND `user` = ? AND `store` = ? LIMIT 1)"
+ args[args_len+1], args[args_len+2], args[args_len+3], args[args_len+4] = query.before, args[1], args[2], args[3];
+ end
+end
+
+function archive_store:find(username, query)
+ query = query or {};
+ local user,store = username,self.store;
+ local total;
+ local ok, result = engine:transaction(function()
+ local sql_query = "SELECT `key`, `type`, `value`, `when` FROM `prosodyarchive` WHERE %s ORDER BY `sort_id` %s%s;";
+ local args = { host, user or "", store, };
+ local where = { "`host` = ?", "`user` = ?", "`store` = ?", };
+
+ archive_where(query, args, where);
+
+ -- Total matching
+ if query.total then
+ local stats = engine:select("SELECT COUNT(*) FROM `prosodyarchive` WHERE " .. t_concat(where, " AND "), unpack(args));
+ if stats then
+ local _total = stats()
+ total = _total and _total[1];
+ end
+ if query.limit == 0 then -- Skip the real query
+ return noop, total;
+ end
+ end
+
+ archive_where_id_range(query, args, where);
+
+ if query.limit then
+ args[#args+1] = query.limit;
+ end
+
+ sql_query = sql_query:format(t_concat(where, " AND "), query.reverse and "DESC" or "ASC", query.limit and " LIMIT ?" or "");
+ module:log("debug", sql_query);
+ return engine:select(sql_query, unpack(args));
+ end);
+ if not ok then return ok, result end
+ return function()
+ local row = result();
+ if row ~= nil then
+ return row[1], deserialize(row[2], row[3]), row[4];
+ end
+ end, total;
+end
+
+function archive_store:delete(username, query)
+ query = query or {};
+ local user,store = username,self.store;
+ return engine:transaction(function()
+ local sql_query = "DELETE FROM `prosodyarchive` WHERE %s;";
+ local args = { host, user or "", store, };
+ local where = { "`host` = ?", "`user` = ?", "`store` = ?", };
+ if user == true then
+ table.remove(args, 2);
+ table.remove(where, 2);
+ end
+ archive_where(query, args, where);
+ archive_where_id_range(query, args, where);
+ sql_query = sql_query:format(t_concat(where, " AND "));
+ module:log("debug", sql_query);
+ return engine:delete(sql_query, unpack(args));
+ end);
+end
+