Пример #1
0
    def _read_datavalue_history(self, rv, details):
        starttime = details.StartTime
        if rv.ContinuationPoint:
            # Spec says we should ignore details if cont point is present
            # but they also say we can use cont point as timestamp to enable stateless
            # implementation. This is contradictory, so we assume details is
            # send correctly with continuation point
            starttime = ua.unpack_datetime(utils.Buffer(rv.ContinuationPoint))

        dv, cont = self.storage.read_node_history(rv.NodeId, starttime,
                                                  details.EndTime,
                                                  details.NumValuesPerNode)
        if cont:
            cont = ua.pack_datetime(cont)
        # rv.IndexRange
        # rv.DataEncoding # xml or binary, seems spec say we can ignore that one
        return dv, cont
Пример #2
0
    def _read_datavalue_history(self, rv, details):
        starttime = details.StartTime
        if rv.ContinuationPoint:
            # Spec says we should ignore details if cont point is present
            # but they also say we can use cont point as timestamp to enable stateless
            # implementation. This is contradictory, so we assume details is
            # send correctly with continuation point
            starttime = ua.unpack_datetime(utils.Buffer(rv.ContinuationPoint))

        dv, cont = self.storage.read_node_history(rv.NodeId,
                                                  starttime,
                                                  details.EndTime,
                                                  details.NumValuesPerNode)
        if cont:
            cont = ua.pack_datetime(cont)
        # rv.IndexRange
        # rv.DataEncoding # xml or binary, seems spec say we can ignore that one
        return dv, cont
Пример #3
0
    def _read_event_history(self, rv, details):
        starttime = details.StartTime
        if rv.ContinuationPoint:
            # Spec says we should ignore details if cont point is present
            # but they also say we can use cont point as timestamp to enable stateless
            # implementation. This is contradictory, so we assume details is
            # send correctly with continuation point
            # starttime = bytes_to_datetime(rv.ContinuationPoint)
            starttime = ua.unpack_datetime(utils.Buffer(rv.ContinuationPoint))

        ev, cont = self.storage.read_event_history(rv.NodeId,
                                                   starttime,
                                                   details.EndTime,
                                                   details.NumValuesPerNode,
                                                   details.Filter)
        if cont:
            # cont = datetime_to_bytes(dv[-1].ServerTimestamp)
            cont = ua.pack_datetime(cont)
        return ev, cont
Пример #4
0
    def _read_event_history(self, rv, details):
        starttime = details.StartTime
        if rv.ContinuationPoint:
            # Spec says we should ignore details if cont point is present
            # but they also say we can use cont point as timestamp to enable stateless
            # implementation. This is contradictory, so we assume details is
            # send correctly with continuation point
            # starttime = bytes_to_datetime(rv.ContinuationPoint)
            starttime = ua.unpack_datetime(utils.Buffer(rv.ContinuationPoint))

        ev, cont = self.storage.read_event_history(rv.NodeId,
                                                   starttime,
                                                   details.EndTime,
                                                   details.NumValuesPerNode,
                                                   details.Filter)
        if cont:
            # cont = datetime_to_bytes(dv[-1].ServerTimestamp)
            cont = ua.pack_datetime(cont)
        return ev, cont
Пример #5
0
    def _read_event_history(self, rv, details):
        starttime = details.StartTime
        if rv.ContinuationPoint:
            # Spec says we should ignore details if cont point is present
            # but they also say we can use cont point as timestamp to enable stateless
            # implementation. This is contradictory, so we assume details is
            # send correctly with continuation point
            starttime = ua.unpack_datetime(utils.Buffer(rv.ContinuationPoint))

        evts, cont = self.storage.read_event_history(rv.NodeId, starttime,
                                                     details.EndTime,
                                                     details.NumValuesPerNode,
                                                     details.Filter)
        results = []
        for ev in evts:
            field_list = ua.HistoryEventFieldList()
            field_list.EventFields = ev.to_event_fields(
                details.Filter.SelectClauses)
            results.append(field_list)
        if cont:
            cont = ua.pack_datetime(cont)
        return results, cont
Пример #6
0
    def _read_event_history(self, rv, details):
        starttime = details.StartTime
        if rv.ContinuationPoint:
            # Spec says we should ignore details if cont point is present
            # but they also say we can use cont point as timestamp to enable stateless
            # implementation. This is contradictory, so we assume details is
            # send correctly with continuation point
            starttime = ua.unpack_datetime(utils.Buffer(rv.ContinuationPoint))

        evts, cont = self.storage.read_event_history(rv.NodeId,
                                                     starttime,
                                                     details.EndTime,
                                                     details.NumValuesPerNode,
                                                     details.Filter)
        results = []
        for ev in evts:
            field_list = ua.HistoryEventFieldList()
            field_list.EventFields = ev.to_event_fields(details.Filter.SelectClauses)
            results.append(field_list)
        if cont:
            cont = ua.pack_datetime(cont)
        return results, cont