isapego commented on a change in pull request #40:
URL:
https://github.com/apache/ignite-python-thin-client/pull/40#discussion_r648187800
##########
File path: pyignite/aio_client.py
##########
@@ -487,3 +489,21 @@ def get_cluster(self) -> 'AioCluster':
:return: :py:class:`~pyignite.aio_cluster.AioCluster` instance.
"""
return AioCluster(self)
+
+ def tx_start(self, concurrency: TransactionConcurrency =
TransactionConcurrency.PESSIMISTIC,
+ isolation: TransactionIsolation =
TransactionIsolation.REPEATABLE_READ,
+ timeout: Union[int, float] = 0, label: Optional[str] = None)
-> 'AioTransaction':
+ """
+ Start async thin client transaction.
+
+ :param concurrency: (optional) transaction concurrency, see
+
:py:class:`~pyignite.datatypes.transactions.TransactionConcurrency`
+ :param isolation: (optional) transaction isolation level, see
+
:py:class:`~pyignite.datatypes.transactions.TransactionIsolation`
+ :param timeout: (optional) transaction timeout in seconds if float, in
millis if int
+ :param label: (optional) transaction label.
+ :return: :py:class:`~pyignite.transaction.AioTransaction` instance.
+ """
+ if sys.version_info < (3, 7):
+ raise NotSupportedError(f"Transactions are not supported in async
client on current python {sys.version}")
Review comment:
Why python 3.7 is not supported? Does it has to do something with
`contextvars`?
##########
File path: pyignite/transaction.py
##########
@@ -0,0 +1,130 @@
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import math
+from typing import Union
+
+from pyignite.api.tx_api import tx_end, tx_start, tx_end_async, tx_start_async
+from pyignite.datatypes import TransactionIsolation, TransactionConcurrency
+from pyignite.exceptions import CacheError
+from pyignite.utils import status_to_exception
+
+
+def _convert_to_millis(timeout: Union[int, float]) -> int:
+ if isinstance(timeout, float):
+ return math.floor(timeout * 1000)
+ return timeout
+
+
+class Transaction:
+ """
+ Thin client transaction.
+ """
+ def __init__(self, client, concurrency=TransactionConcurrency.PESSIMISTIC,
+ isolation=TransactionIsolation.REPEATABLE_READ, timeout=0,
label=None):
+ self.client, self.concurrency = client, concurrency
+ self.isolation, self.timeout = isolation, _convert_to_millis(timeout)
+ self.label, self.closed = label, False
+ self.tx_id = self.__start_tx()
Review comment:
Is it OK in python when `__init__` throws exception?
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