async def read_raw_history(self,
starttime=None,
endtime=None,
numvalues=0,
return_bounds=True):
"""
Read raw history of a node
result code from server is checked and an exception is raised in case of error
If numvalues is > 0 and number of events in period is > numvalues
then result will be truncated
"""
details = ua.ReadRawModifiedDetails()
details.IsReadModified = False
if starttime:
details.StartTime = starttime
else:
details.StartTime = ua.get_win_epoch()
if endtime:
details.EndTime = endtime
else:
details.EndTime = ua.get_win_epoch()
details.NumValuesPerNode = numvalues
details.ReturnBounds = return_bounds
history = []
continuation_point = None
while True:
result = await self.history_read(details, continuation_point)
result.StatusCode.check()
continuation_point = result.ContinuationPoint
history.extend(result.HistoryData.DataValues)
# No more data available
if continuation_point is None:
break
return history
async def read_raw_history(self,
starttime=None,
endtime=None,
numvalues=0):
"""
Read raw history of a node
result code from server is checked and an exception is raised in case of error
If numvalues is > 0 and number of events in period is > numvalues
then result will be truncated
"""
details = ua.ReadRawModifiedDetails()
details.IsReadModified = False
if starttime:
details.StartTime = starttime
else:
details.StartTime = ua.get_win_epoch()
if endtime:
details.EndTime = endtime
else:
details.EndTime = ua.get_win_epoch()
details.NumValuesPerNode = numvalues
details.ReturnBounds = True
result = await self.history_read(details)
result.StatusCode.check()
return result.HistoryData.DataValues
