How to use the aiosqlite.Error function in aiosqlite

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github FreeOpcUa / opcua-asyncio / asyncua / server / history_sql.py View on Github external
start_time, end_time, order, limit = self._get_bounds(start, end, nb_values)
        cont = None
        results = []
        # select values from the database; recreate UA Variant from binary
        try:
            async with self._db.execute(
                    f'SELECT * FROM "{table}" WHERE "SourceTimestamp" BETWEEN ? AND ? '
                    f'ORDER BY "_Id" {order} LIMIT ?', (start_time, end_time, limit,)) as cursor:
                async for row in cursor:
                    # rebuild the data value object
                    dv = ua.DataValue(variant_from_binary(Buffer(row[6])))
                    dv.ServerTimestamp = row[1]
                    dv.SourceTimestamp = row[2]
                    dv.StatusCode = ua.StatusCode(row[3])
                    results.append(dv)
        except aiosqlite.Error as e:
            self.logger.error("Historizing SQL Read Error for %s: %s", node_id, e)
        if nb_values:
            if len(results) > nb_values:
                cont = results[nb_values].SourceTimestamp
            results = results[:nb_values]
        return results, cont

aiosqlite

asyncio bridge to the standard sqlite3 module

MIT
Latest version published 9 months ago

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