- if code ~= 200 then
- print("writing record to backlog...")
- backlog_con:execute(string.format("INSERT INTO queue(time_stamp,sensor_id,sensor,param,value) VALUES (datetime('now','localtime'),'%s','%s','%s',%f)",id,type,param,val))
+ if code ~= 200 and backlogdb then
+ printLog("writing record to backlog...")
+ local backlog_con = assert(env:connect(backlogdb))
+ local n,err = backlog_con:execute(string.format("INSERT INTO queue(time_stamp,sensor_id,sensor,param,value) VALUES (datetime('now','localtime'),'%s','%s','%s',%f)",id,type,param,val))
+ backlog_con:close()
+
+ if err == "LuaSQL: database is locked" then
+ unlock_db(backlogdb);
+ end
+