/
grpc_asyncio.py
837 lines (757 loc) · 37.2 KB
/
grpc_asyncio.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
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
# -*- coding: utf-8 -*-
# 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.
#
import warnings
from typing import Awaitable, Callable, Dict, Optional, Sequence, Tuple, Union
from google.api_core import gapic_v1 # type: ignore
from google.api_core import grpc_helpers_async # type: ignore
from google.auth import credentials as ga_credentials # type: ignore
from google.auth.transport.grpc import SslCredentials # type: ignore
import packaging.version
import grpc # type: ignore
from grpc.experimental import aio # type: ignore
from google.iam.v1 import iam_policy_pb2 # type: ignore
from google.iam.v1 import policy_pb2 # type: ignore
from google.protobuf import empty_pb2 # type: ignore
from google.pubsub_v1.types import pubsub
from .base import SubscriberTransport, DEFAULT_CLIENT_INFO
from .grpc import SubscriberGrpcTransport
class SubscriberGrpcAsyncIOTransport(SubscriberTransport):
"""gRPC AsyncIO backend transport for Subscriber.
The service that an application uses to manipulate subscriptions and
to consume messages from a subscription via the ``Pull`` method or
by establishing a bi-directional stream using the ``StreamingPull``
method.
This class defines the same methods as the primary client, so the
primary client can load the underlying transport implementation
and call it.
It sends protocol buffers over the wire using gRPC (which is built on
top of HTTP/2); the ``grpcio`` package must be installed.
"""
_grpc_channel: aio.Channel
_stubs: Dict[str, Callable] = {}
@classmethod
def create_channel(
cls,
host: str = "pubsub.googleapis.com",
credentials: ga_credentials.Credentials = None,
credentials_file: Optional[str] = None,
scopes: Optional[Sequence[str]] = None,
quota_project_id: Optional[str] = None,
**kwargs,
) -> aio.Channel:
"""Create and return a gRPC AsyncIO channel object.
Args:
host (Optional[str]): The host for the channel to use.
credentials (Optional[~.Credentials]): The
authorization credentials to attach to requests. These
credentials identify this application to the service. If
none are specified, the client will attempt to ascertain
the credentials from the environment.
credentials_file (Optional[str]): A file with credentials that can
be loaded with :func:`google.auth.load_credentials_from_file`.
This argument is ignored if ``channel`` is provided.
scopes (Optional[Sequence[str]]): A optional list of scopes needed for this
service. These are only used when credentials are not specified and
are passed to :func:`google.auth.default`.
quota_project_id (Optional[str]): An optional project to use for billing
and quota.
kwargs (Optional[dict]): Keyword arguments, which are passed to the
channel creation.
Returns:
aio.Channel: A gRPC AsyncIO channel object.
"""
return grpc_helpers_async.create_channel(
host,
credentials=credentials,
credentials_file=credentials_file,
quota_project_id=quota_project_id,
default_scopes=cls.AUTH_SCOPES,
scopes=scopes,
default_host=cls.DEFAULT_HOST,
**kwargs,
)
def __init__(
self,
*,
host: str = "pubsub.googleapis.com",
credentials: ga_credentials.Credentials = None,
credentials_file: Optional[str] = None,
scopes: Optional[Sequence[str]] = None,
channel: aio.Channel = None,
api_mtls_endpoint: str = None,
client_cert_source: Callable[[], Tuple[bytes, bytes]] = None,
ssl_channel_credentials: grpc.ChannelCredentials = None,
client_cert_source_for_mtls: Callable[[], Tuple[bytes, bytes]] = None,
quota_project_id=None,
client_info: gapic_v1.client_info.ClientInfo = DEFAULT_CLIENT_INFO,
always_use_jwt_access: Optional[bool] = False,
) -> None:
"""Instantiate the transport.
Args:
host (Optional[str]):
The hostname to connect to.
credentials (Optional[google.auth.credentials.Credentials]): The
authorization credentials to attach to requests. These
credentials identify the application to the service; if none
are specified, the client will attempt to ascertain the
credentials from the environment.
This argument is ignored if ``channel`` is provided.
credentials_file (Optional[str]): A file with credentials that can
be loaded with :func:`google.auth.load_credentials_from_file`.
This argument is ignored if ``channel`` is provided.
scopes (Optional[Sequence[str]]): A optional list of scopes needed for this
service. These are only used when credentials are not specified and
are passed to :func:`google.auth.default`.
channel (Optional[aio.Channel]): A ``Channel`` instance through
which to make calls.
api_mtls_endpoint (Optional[str]): Deprecated. The mutual TLS endpoint.
If provided, it overrides the ``host`` argument and tries to create
a mutual TLS channel with client SSL credentials from
``client_cert_source`` or application default SSL credentials.
client_cert_source (Optional[Callable[[], Tuple[bytes, bytes]]]):
Deprecated. A callback to provide client SSL certificate bytes and
private key bytes, both in PEM format. It is ignored if
``api_mtls_endpoint`` is None.
ssl_channel_credentials (grpc.ChannelCredentials): SSL credentials
for the grpc channel. It is ignored if ``channel`` is provided.
client_cert_source_for_mtls (Optional[Callable[[], Tuple[bytes, bytes]]]):
A callback to provide client certificate bytes and private key bytes,
both in PEM format. It is used to configure a mutual TLS channel. It is
ignored if ``channel`` or ``ssl_channel_credentials`` is provided.
quota_project_id (Optional[str]): An optional project to use for billing
and quota.
client_info (google.api_core.gapic_v1.client_info.ClientInfo):
The client info used to send a user-agent string along with
API requests. If ``None``, then default info will be used.
Generally, you only need to set this if you're developing
your own client library.
always_use_jwt_access (Optional[bool]): Whether self signed JWT should
be used for service account credentials.
Raises:
google.auth.exceptions.MutualTlsChannelError: If mutual TLS transport
creation failed for any reason.
google.api_core.exceptions.DuplicateCredentialArgs: If both ``credentials``
and ``credentials_file`` are passed.
"""
self._grpc_channel = None
self._ssl_channel_credentials = ssl_channel_credentials
self._stubs: Dict[str, Callable] = {}
if api_mtls_endpoint:
warnings.warn("api_mtls_endpoint is deprecated", DeprecationWarning)
if client_cert_source:
warnings.warn("client_cert_source is deprecated", DeprecationWarning)
if channel:
# Ignore credentials if a channel was passed.
credentials = False
# If a channel was explicitly provided, set it.
self._grpc_channel = channel
self._ssl_channel_credentials = None
else:
if api_mtls_endpoint:
host = api_mtls_endpoint
# Create SSL credentials with client_cert_source or application
# default SSL credentials.
if client_cert_source:
cert, key = client_cert_source()
self._ssl_channel_credentials = grpc.ssl_channel_credentials(
certificate_chain=cert, private_key=key
)
else:
self._ssl_channel_credentials = SslCredentials().ssl_credentials
else:
if client_cert_source_for_mtls and not ssl_channel_credentials:
cert, key = client_cert_source_for_mtls()
self._ssl_channel_credentials = grpc.ssl_channel_credentials(
certificate_chain=cert, private_key=key
)
# The base transport sets the host, credentials and scopes
super().__init__(
host=host,
credentials=credentials,
credentials_file=credentials_file,
scopes=scopes,
quota_project_id=quota_project_id,
client_info=client_info,
always_use_jwt_access=always_use_jwt_access,
)
if not self._grpc_channel:
self._grpc_channel = type(self).create_channel(
self._host,
credentials=self._credentials,
credentials_file=credentials_file,
scopes=self._scopes,
ssl_credentials=self._ssl_channel_credentials,
quota_project_id=quota_project_id,
options=[
("grpc.max_send_message_length", -1),
("grpc.max_receive_message_length", -1),
("grpc.keepalive_time_ms", 30000),
],
)
# Wrap messages. This must be done after self._grpc_channel exists
self._prep_wrapped_messages(client_info)
@property
def grpc_channel(self) -> aio.Channel:
"""Create the channel designed to connect to this service.
This property caches on the instance; repeated calls return
the same channel.
"""
# Return the channel from cache.
return self._grpc_channel
@property
def create_subscription(
self,
) -> Callable[[pubsub.Subscription], Awaitable[pubsub.Subscription]]:
r"""Return a callable for the create subscription method over gRPC.
Creates a subscription to a given topic. See the [resource name
rules]
(https://cloud.google.com/pubsub/docs/admin#resource_names). If
the subscription already exists, returns ``ALREADY_EXISTS``. If
the corresponding topic doesn't exist, returns ``NOT_FOUND``.
If the name is not provided in the request, the server will
assign a random name for this subscription on the same project
as the topic, conforming to the [resource name format]
(https://cloud.google.com/pubsub/docs/admin#resource_names). The
generated name is populated in the returned Subscription object.
Note that for REST API requests, you must specify a name in the
request.
Returns:
Callable[[~.Subscription],
Awaitable[~.Subscription]]:
A function that, when called, will call the underlying RPC
on the server.
"""
# Generate a "stub function" on-the-fly which will actually make
# the request.
# gRPC handles serialization and deserialization, so we just need
# to pass in the functions for each.
if "create_subscription" not in self._stubs:
self._stubs["create_subscription"] = self.grpc_channel.unary_unary(
"/google.pubsub.v1.Subscriber/CreateSubscription",
request_serializer=pubsub.Subscription.serialize,
response_deserializer=pubsub.Subscription.deserialize,
)
return self._stubs["create_subscription"]
@property
def get_subscription(
self,
) -> Callable[[pubsub.GetSubscriptionRequest], Awaitable[pubsub.Subscription]]:
r"""Return a callable for the get subscription method over gRPC.
Gets the configuration details of a subscription.
Returns:
Callable[[~.GetSubscriptionRequest],
Awaitable[~.Subscription]]:
A function that, when called, will call the underlying RPC
on the server.
"""
# Generate a "stub function" on-the-fly which will actually make
# the request.
# gRPC handles serialization and deserialization, so we just need
# to pass in the functions for each.
if "get_subscription" not in self._stubs:
self._stubs["get_subscription"] = self.grpc_channel.unary_unary(
"/google.pubsub.v1.Subscriber/GetSubscription",
request_serializer=pubsub.GetSubscriptionRequest.serialize,
response_deserializer=pubsub.Subscription.deserialize,
)
return self._stubs["get_subscription"]
@property
def update_subscription(
self,
) -> Callable[[pubsub.UpdateSubscriptionRequest], Awaitable[pubsub.Subscription]]:
r"""Return a callable for the update subscription method over gRPC.
Updates an existing subscription. Note that certain
properties of a subscription, such as its topic, are not
modifiable.
Returns:
Callable[[~.UpdateSubscriptionRequest],
Awaitable[~.Subscription]]:
A function that, when called, will call the underlying RPC
on the server.
"""
# Generate a "stub function" on-the-fly which will actually make
# the request.
# gRPC handles serialization and deserialization, so we just need
# to pass in the functions for each.
if "update_subscription" not in self._stubs:
self._stubs["update_subscription"] = self.grpc_channel.unary_unary(
"/google.pubsub.v1.Subscriber/UpdateSubscription",
request_serializer=pubsub.UpdateSubscriptionRequest.serialize,
response_deserializer=pubsub.Subscription.deserialize,
)
return self._stubs["update_subscription"]
@property
def list_subscriptions(
self,
) -> Callable[
[pubsub.ListSubscriptionsRequest], Awaitable[pubsub.ListSubscriptionsResponse]
]:
r"""Return a callable for the list subscriptions method over gRPC.
Lists matching subscriptions.
Returns:
Callable[[~.ListSubscriptionsRequest],
Awaitable[~.ListSubscriptionsResponse]]:
A function that, when called, will call the underlying RPC
on the server.
"""
# Generate a "stub function" on-the-fly which will actually make
# the request.
# gRPC handles serialization and deserialization, so we just need
# to pass in the functions for each.
if "list_subscriptions" not in self._stubs:
self._stubs["list_subscriptions"] = self.grpc_channel.unary_unary(
"/google.pubsub.v1.Subscriber/ListSubscriptions",
request_serializer=pubsub.ListSubscriptionsRequest.serialize,
response_deserializer=pubsub.ListSubscriptionsResponse.deserialize,
)
return self._stubs["list_subscriptions"]
@property
def delete_subscription(
self,
) -> Callable[[pubsub.DeleteSubscriptionRequest], Awaitable[empty_pb2.Empty]]:
r"""Return a callable for the delete subscription method over gRPC.
Deletes an existing subscription. All messages retained in the
subscription are immediately dropped. Calls to ``Pull`` after
deletion will return ``NOT_FOUND``. After a subscription is
deleted, a new one may be created with the same name, but the
new one has no association with the old subscription or its
topic unless the same topic is specified.
Returns:
Callable[[~.DeleteSubscriptionRequest],
Awaitable[~.Empty]]:
A function that, when called, will call the underlying RPC
on the server.
"""
# Generate a "stub function" on-the-fly which will actually make
# the request.
# gRPC handles serialization and deserialization, so we just need
# to pass in the functions for each.
if "delete_subscription" not in self._stubs:
self._stubs["delete_subscription"] = self.grpc_channel.unary_unary(
"/google.pubsub.v1.Subscriber/DeleteSubscription",
request_serializer=pubsub.DeleteSubscriptionRequest.serialize,
response_deserializer=empty_pb2.Empty.FromString,
)
return self._stubs["delete_subscription"]
@property
def modify_ack_deadline(
self,
) -> Callable[[pubsub.ModifyAckDeadlineRequest], Awaitable[empty_pb2.Empty]]:
r"""Return a callable for the modify ack deadline method over gRPC.
Modifies the ack deadline for a specific message. This method is
useful to indicate that more time is needed to process a message
by the subscriber, or to make the message available for
redelivery if the processing was interrupted. Note that this
does not modify the subscription-level ``ackDeadlineSeconds``
used for subsequent messages.
Returns:
Callable[[~.ModifyAckDeadlineRequest],
Awaitable[~.Empty]]:
A function that, when called, will call the underlying RPC
on the server.
"""
# Generate a "stub function" on-the-fly which will actually make
# the request.
# gRPC handles serialization and deserialization, so we just need
# to pass in the functions for each.
if "modify_ack_deadline" not in self._stubs:
self._stubs["modify_ack_deadline"] = self.grpc_channel.unary_unary(
"/google.pubsub.v1.Subscriber/ModifyAckDeadline",
request_serializer=pubsub.ModifyAckDeadlineRequest.serialize,
response_deserializer=empty_pb2.Empty.FromString,
)
return self._stubs["modify_ack_deadline"]
@property
def acknowledge(
self,
) -> Callable[[pubsub.AcknowledgeRequest], Awaitable[empty_pb2.Empty]]:
r"""Return a callable for the acknowledge method over gRPC.
Acknowledges the messages associated with the ``ack_ids`` in the
``AcknowledgeRequest``. The Pub/Sub system can remove the
relevant messages from the subscription.
Acknowledging a message whose ack deadline has expired may
succeed, but such a message may be redelivered later.
Acknowledging a message more than once will not result in an
error.
Returns:
Callable[[~.AcknowledgeRequest],
Awaitable[~.Empty]]:
A function that, when called, will call the underlying RPC
on the server.
"""
# Generate a "stub function" on-the-fly which will actually make
# the request.
# gRPC handles serialization and deserialization, so we just need
# to pass in the functions for each.
if "acknowledge" not in self._stubs:
self._stubs["acknowledge"] = self.grpc_channel.unary_unary(
"/google.pubsub.v1.Subscriber/Acknowledge",
request_serializer=pubsub.AcknowledgeRequest.serialize,
response_deserializer=empty_pb2.Empty.FromString,
)
return self._stubs["acknowledge"]
@property
def pull(self) -> Callable[[pubsub.PullRequest], Awaitable[pubsub.PullResponse]]:
r"""Return a callable for the pull method over gRPC.
Pulls messages from the server. The server may return
``UNAVAILABLE`` if there are too many concurrent pull requests
pending for the given subscription.
Returns:
Callable[[~.PullRequest],
Awaitable[~.PullResponse]]:
A function that, when called, will call the underlying RPC
on the server.
"""
# Generate a "stub function" on-the-fly which will actually make
# the request.
# gRPC handles serialization and deserialization, so we just need
# to pass in the functions for each.
if "pull" not in self._stubs:
self._stubs["pull"] = self.grpc_channel.unary_unary(
"/google.pubsub.v1.Subscriber/Pull",
request_serializer=pubsub.PullRequest.serialize,
response_deserializer=pubsub.PullResponse.deserialize,
)
return self._stubs["pull"]
@property
def streaming_pull(
self,
) -> Callable[
[pubsub.StreamingPullRequest], Awaitable[pubsub.StreamingPullResponse]
]:
r"""Return a callable for the streaming pull method over gRPC.
Establishes a stream with the server, which sends messages down
to the client. The client streams acknowledgements and ack
deadline modifications back to the server. The server will close
the stream and return the status on any error. The server may
close the stream with status ``UNAVAILABLE`` to reassign
server-side resources, in which case, the client should
re-establish the stream. Flow control can be achieved by
configuring the underlying RPC channel.
Returns:
Callable[[~.StreamingPullRequest],
Awaitable[~.StreamingPullResponse]]:
A function that, when called, will call the underlying RPC
on the server.
"""
# Generate a "stub function" on-the-fly which will actually make
# the request.
# gRPC handles serialization and deserialization, so we just need
# to pass in the functions for each.
if "streaming_pull" not in self._stubs:
self._stubs["streaming_pull"] = self.grpc_channel.stream_stream(
"/google.pubsub.v1.Subscriber/StreamingPull",
request_serializer=pubsub.StreamingPullRequest.serialize,
response_deserializer=pubsub.StreamingPullResponse.deserialize,
)
return self._stubs["streaming_pull"]
@property
def modify_push_config(
self,
) -> Callable[[pubsub.ModifyPushConfigRequest], Awaitable[empty_pb2.Empty]]:
r"""Return a callable for the modify push config method over gRPC.
Modifies the ``PushConfig`` for a specified subscription.
This may be used to change a push subscription to a pull one
(signified by an empty ``PushConfig``) or vice versa, or change
the endpoint URL and other attributes of a push subscription.
Messages will accumulate for delivery continuously through the
call regardless of changes to the ``PushConfig``.
Returns:
Callable[[~.ModifyPushConfigRequest],
Awaitable[~.Empty]]:
A function that, when called, will call the underlying RPC
on the server.
"""
# Generate a "stub function" on-the-fly which will actually make
# the request.
# gRPC handles serialization and deserialization, so we just need
# to pass in the functions for each.
if "modify_push_config" not in self._stubs:
self._stubs["modify_push_config"] = self.grpc_channel.unary_unary(
"/google.pubsub.v1.Subscriber/ModifyPushConfig",
request_serializer=pubsub.ModifyPushConfigRequest.serialize,
response_deserializer=empty_pb2.Empty.FromString,
)
return self._stubs["modify_push_config"]
@property
def get_snapshot(
self,
) -> Callable[[pubsub.GetSnapshotRequest], Awaitable[pubsub.Snapshot]]:
r"""Return a callable for the get snapshot method over gRPC.
Gets the configuration details of a snapshot.
Snapshots are used in <a
href="https://cloud.google.com/pubsub/docs/replay-
overview">Seek</a> operations, which allow you to manage
message acknowledgments in bulk. That is, you can set
the acknowledgment state of messages in an existing
subscription to the state captured by a snapshot.
Returns:
Callable[[~.GetSnapshotRequest],
Awaitable[~.Snapshot]]:
A function that, when called, will call the underlying RPC
on the server.
"""
# Generate a "stub function" on-the-fly which will actually make
# the request.
# gRPC handles serialization and deserialization, so we just need
# to pass in the functions for each.
if "get_snapshot" not in self._stubs:
self._stubs["get_snapshot"] = self.grpc_channel.unary_unary(
"/google.pubsub.v1.Subscriber/GetSnapshot",
request_serializer=pubsub.GetSnapshotRequest.serialize,
response_deserializer=pubsub.Snapshot.deserialize,
)
return self._stubs["get_snapshot"]
@property
def list_snapshots(
self,
) -> Callable[
[pubsub.ListSnapshotsRequest], Awaitable[pubsub.ListSnapshotsResponse]
]:
r"""Return a callable for the list snapshots method over gRPC.
Lists the existing snapshots. Snapshots are used in
`Seek <https://cloud.google.com/pubsub/docs/replay-overview>`__
operations, which allow you to manage message acknowledgments in
bulk. That is, you can set the acknowledgment state of messages
in an existing subscription to the state captured by a snapshot.
Returns:
Callable[[~.ListSnapshotsRequest],
Awaitable[~.ListSnapshotsResponse]]:
A function that, when called, will call the underlying RPC
on the server.
"""
# Generate a "stub function" on-the-fly which will actually make
# the request.
# gRPC handles serialization and deserialization, so we just need
# to pass in the functions for each.
if "list_snapshots" not in self._stubs:
self._stubs["list_snapshots"] = self.grpc_channel.unary_unary(
"/google.pubsub.v1.Subscriber/ListSnapshots",
request_serializer=pubsub.ListSnapshotsRequest.serialize,
response_deserializer=pubsub.ListSnapshotsResponse.deserialize,
)
return self._stubs["list_snapshots"]
@property
def create_snapshot(
self,
) -> Callable[[pubsub.CreateSnapshotRequest], Awaitable[pubsub.Snapshot]]:
r"""Return a callable for the create snapshot method over gRPC.
Creates a snapshot from the requested subscription. Snapshots
are used in
`Seek <https://cloud.google.com/pubsub/docs/replay-overview>`__
operations, which allow you to manage message acknowledgments in
bulk. That is, you can set the acknowledgment state of messages
in an existing subscription to the state captured by a snapshot.
If the snapshot already exists, returns ``ALREADY_EXISTS``. If
the requested subscription doesn't exist, returns ``NOT_FOUND``.
If the backlog in the subscription is too old -- and the
resulting snapshot would expire in less than 1 hour -- then
``FAILED_PRECONDITION`` is returned. See also the
``Snapshot.expire_time`` field. If the name is not provided in
the request, the server will assign a random name for this
snapshot on the same project as the subscription, conforming to
the [resource name format]
(https://cloud.google.com/pubsub/docs/admin#resource_names). The
generated name is populated in the returned Snapshot object.
Note that for REST API requests, you must specify a name in the
request.
Returns:
Callable[[~.CreateSnapshotRequest],
Awaitable[~.Snapshot]]:
A function that, when called, will call the underlying RPC
on the server.
"""
# Generate a "stub function" on-the-fly which will actually make
# the request.
# gRPC handles serialization and deserialization, so we just need
# to pass in the functions for each.
if "create_snapshot" not in self._stubs:
self._stubs["create_snapshot"] = self.grpc_channel.unary_unary(
"/google.pubsub.v1.Subscriber/CreateSnapshot",
request_serializer=pubsub.CreateSnapshotRequest.serialize,
response_deserializer=pubsub.Snapshot.deserialize,
)
return self._stubs["create_snapshot"]
@property
def update_snapshot(
self,
) -> Callable[[pubsub.UpdateSnapshotRequest], Awaitable[pubsub.Snapshot]]:
r"""Return a callable for the update snapshot method over gRPC.
Updates an existing snapshot. Snapshots are used in
<a href="https://cloud.google.com/pubsub/docs/replay-
overview">Seek</a> operations, which allow
you to manage message acknowledgments in bulk. That is,
you can set the acknowledgment state of messages in an
existing subscription to the state captured by a
snapshot.
Returns:
Callable[[~.UpdateSnapshotRequest],
Awaitable[~.Snapshot]]:
A function that, when called, will call the underlying RPC
on the server.
"""
# Generate a "stub function" on-the-fly which will actually make
# the request.
# gRPC handles serialization and deserialization, so we just need
# to pass in the functions for each.
if "update_snapshot" not in self._stubs:
self._stubs["update_snapshot"] = self.grpc_channel.unary_unary(
"/google.pubsub.v1.Subscriber/UpdateSnapshot",
request_serializer=pubsub.UpdateSnapshotRequest.serialize,
response_deserializer=pubsub.Snapshot.deserialize,
)
return self._stubs["update_snapshot"]
@property
def delete_snapshot(
self,
) -> Callable[[pubsub.DeleteSnapshotRequest], Awaitable[empty_pb2.Empty]]:
r"""Return a callable for the delete snapshot method over gRPC.
Removes an existing snapshot. Snapshots are used in [Seek]
(https://cloud.google.com/pubsub/docs/replay-overview)
operations, which allow you to manage message acknowledgments in
bulk. That is, you can set the acknowledgment state of messages
in an existing subscription to the state captured by a snapshot.
When the snapshot is deleted, all messages retained in the
snapshot are immediately dropped. After a snapshot is deleted, a
new one may be created with the same name, but the new one has
no association with the old snapshot or its subscription, unless
the same subscription is specified.
Returns:
Callable[[~.DeleteSnapshotRequest],
Awaitable[~.Empty]]:
A function that, when called, will call the underlying RPC
on the server.
"""
# Generate a "stub function" on-the-fly which will actually make
# the request.
# gRPC handles serialization and deserialization, so we just need
# to pass in the functions for each.
if "delete_snapshot" not in self._stubs:
self._stubs["delete_snapshot"] = self.grpc_channel.unary_unary(
"/google.pubsub.v1.Subscriber/DeleteSnapshot",
request_serializer=pubsub.DeleteSnapshotRequest.serialize,
response_deserializer=empty_pb2.Empty.FromString,
)
return self._stubs["delete_snapshot"]
@property
def seek(self) -> Callable[[pubsub.SeekRequest], Awaitable[pubsub.SeekResponse]]:
r"""Return a callable for the seek method over gRPC.
Seeks an existing subscription to a point in time or to a given
snapshot, whichever is provided in the request. Snapshots are
used in [Seek]
(https://cloud.google.com/pubsub/docs/replay-overview)
operations, which allow you to manage message acknowledgments in
bulk. That is, you can set the acknowledgment state of messages
in an existing subscription to the state captured by a snapshot.
Note that both the subscription and the snapshot must be on the
same topic.
Returns:
Callable[[~.SeekRequest],
Awaitable[~.SeekResponse]]:
A function that, when called, will call the underlying RPC
on the server.
"""
# Generate a "stub function" on-the-fly which will actually make
# the request.
# gRPC handles serialization and deserialization, so we just need
# to pass in the functions for each.
if "seek" not in self._stubs:
self._stubs["seek"] = self.grpc_channel.unary_unary(
"/google.pubsub.v1.Subscriber/Seek",
request_serializer=pubsub.SeekRequest.serialize,
response_deserializer=pubsub.SeekResponse.deserialize,
)
return self._stubs["seek"]
@property
def set_iam_policy(
self,
) -> Callable[[iam_policy_pb2.SetIamPolicyRequest], Awaitable[policy_pb2.Policy]]:
r"""Return a callable for the set iam policy method over gRPC.
Sets the IAM access control policy on the specified
function. Replaces any existing policy.
Returns:
Callable[[~.SetIamPolicyRequest],
Awaitable[~.Policy]]:
A function that, when called, will call the underlying RPC
on the server.
"""
# Generate a "stub function" on-the-fly which will actually make
# the request.
# gRPC handles serialization and deserialization, so we just need
# to pass in the functions for each.
if "set_iam_policy" not in self._stubs:
self._stubs["set_iam_policy"] = self.grpc_channel.unary_unary(
"/google.iam.v1.IAMPolicy/SetIamPolicy",
request_serializer=iam_policy_pb2.SetIamPolicyRequest.SerializeToString,
response_deserializer=policy_pb2.Policy.FromString,
)
return self._stubs["set_iam_policy"]
@property
def get_iam_policy(
self,
) -> Callable[[iam_policy_pb2.GetIamPolicyRequest], Awaitable[policy_pb2.Policy]]:
r"""Return a callable for the get iam policy method over gRPC.
Gets the IAM access control policy for a function.
Returns an empty policy if the function exists and does
not have a policy set.
Returns:
Callable[[~.GetIamPolicyRequest],
Awaitable[~.Policy]]:
A function that, when called, will call the underlying RPC
on the server.
"""
# Generate a "stub function" on-the-fly which will actually make
# the request.
# gRPC handles serialization and deserialization, so we just need
# to pass in the functions for each.
if "get_iam_policy" not in self._stubs:
self._stubs["get_iam_policy"] = self.grpc_channel.unary_unary(
"/google.iam.v1.IAMPolicy/GetIamPolicy",
request_serializer=iam_policy_pb2.GetIamPolicyRequest.SerializeToString,
response_deserializer=policy_pb2.Policy.FromString,
)
return self._stubs["get_iam_policy"]
@property
def test_iam_permissions(
self,
) -> Callable[
[iam_policy_pb2.TestIamPermissionsRequest],
Awaitable[iam_policy_pb2.TestIamPermissionsResponse],
]:
r"""Return a callable for the test iam permissions method over gRPC.
Tests the specified permissions against the IAM access control
policy for a function. If the function does not exist, this will
return an empty set of permissions, not a NOT_FOUND error.
Returns:
Callable[[~.TestIamPermissionsRequest],
Awaitable[~.TestIamPermissionsResponse]]:
A function that, when called, will call the underlying RPC
on the server.
"""
# Generate a "stub function" on-the-fly which will actually make
# the request.
# gRPC handles serialization and deserialization, so we just need
# to pass in the functions for each.
if "test_iam_permissions" not in self._stubs:
self._stubs["test_iam_permissions"] = self.grpc_channel.unary_unary(
"/google.iam.v1.IAMPolicy/TestIamPermissions",
request_serializer=iam_policy_pb2.TestIamPermissionsRequest.SerializeToString,
response_deserializer=iam_policy_pb2.TestIamPermissionsResponse.FromString,
)
return self._stubs["test_iam_permissions"]
def close(self):
return self.grpc_channel.close()
__all__ = ("SubscriberGrpcAsyncIOTransport",)