-
Notifications
You must be signed in to change notification settings - Fork 12
/
publisher_impl.py
52 lines (44 loc) · 1.82 KB
/
publisher_impl.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
# Copyright 2020 Google LLC
#
# Licensed 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.
from concurrent.futures import Future
from typing import Mapping
from google.cloud.pubsublite.cloudpubsub.internal.managed_event_loop import (
ManagedEventLoop,
)
from google.cloud.pubsublite.cloudpubsub.internal.single_publisher import (
SinglePublisher,
AsyncSinglePublisher,
)
class SinglePublisherImpl(SinglePublisher):
_managed_loop: ManagedEventLoop
_underlying: AsyncSinglePublisher
def __init__(self, underlying: AsyncSinglePublisher):
super().__init__()
self._managed_loop = ManagedEventLoop("PublisherLoopThread")
self._underlying = underlying
def publish(
self, data: bytes, ordering_key: str = "", **attrs: Mapping[str, str]
) -> "Future[str]":
return self._managed_loop.submit(
self._underlying.publish(data=data, ordering_key=ordering_key, **attrs)
)
def __enter__(self):
self._managed_loop.__enter__()
self._managed_loop.submit(self._underlying.__aenter__()).result()
return self
def __exit__(self, __exc_type, __exc_value, __traceback):
self._managed_loop.submit(
self._underlying.__aexit__(__exc_type, __exc_value, __traceback)
).result()
self._managed_loop.__exit__(__exc_type, __exc_value, __traceback)