Error during export objectlogs

[Erwin van der Zwart]

Hi Bart,

This script creates a csv of the object logs on your ftp folder:

Code:

-- get past year data
logtime = os.time() - 60 * 60 * 24 * 365

-- list of objects by id
objects = {}

-- objects with logging enabled
query = 'SELECT address, datatype, name FROM objects WHERE disablelog=0'
for _, object in ipairs(db:getall(query)) do
 objects[ tonumber(object.address) ] = {
   datatype = tonumber(object.datatype),
   name = tostring(object.name or ''),
 }
end

-- csv buffer
buffer = { '"date","address","name","value"' }

-- get object logs
query = 'SELECT src, address, datahex, logtime, eventtype FROM objectlog WHERE logtime >= ? ORDER BY id DESC'
for _, row in ipairs(db:getall(query, logtime)) do
 object = objects[ tonumber(row.address) ]

 -- found matching object and event type is group write
 if object and row.eventtype == 'write' then
   datatype = object.datatype

   -- check that object datatype is set
   if datatype then
     -- decode data
     data = knxdatatype.decode(row.datahex, datatype)

     -- remove null chars from char/string datatype
     if datatype == dt.char or datatype == dt.string then
       data = data:gsub('%z+', '')
     -- date to DD.MM.YYYY
     elseif datatype == dt.date then
       data = string.format('%.2d.%.2d.%.2d', data.day, data.month, data.year)
     -- time to HH:MM:SS
     elseif datatype == dt.time then
       data = string.format('%.2d:%.2d:%.2d', data.hour, data.minute, data.second)
     end
   else
     data = ''
   end

   -- format csv row
   logdate = os.date('%Y.%m.%d %H:%M:%S', row.logtime)
   csv = string.format('%q,%q,%q,%q', logdate, knxlib.decodega(row.address), object.name, tostring(data))

   -- add to buffer
   table.insert(buffer, csv)
 end
end

dst = '/home/ftp/logs.csv'
io.writefile(dst, table.concat(buffer, '\r\n'))

BR,

Erwin