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grpc.py
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grpc.py
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# -*- 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 Callable, Dict, Optional, Sequence, Tuple
from google.api_core import grpc_helpers # type: ignore
from google.api_core import operations_v1 # type: ignore
from google.api_core import gapic_v1 # type: ignore
from google import auth # type: ignore
from google.auth import credentials # type: ignore
from google.auth.transport.grpc import SslCredentials # type: ignore
import grpc # type: ignore
from google.cloud.spanner_admin_database_v1.types import backup
from google.cloud.spanner_admin_database_v1.types import backup as gsad_backup
from google.cloud.spanner_admin_database_v1.types import spanner_database_admin
from google.iam.v1 import iam_policy_pb2 as iam_policy # type: ignore
from google.iam.v1 import policy_pb2 as policy # type: ignore
from google.longrunning import operations_pb2 as operations # type: ignore
from google.protobuf import empty_pb2 as empty # type: ignore
from .base import DatabaseAdminTransport, DEFAULT_CLIENT_INFO
class DatabaseAdminGrpcTransport(DatabaseAdminTransport):
"""gRPC backend transport for DatabaseAdmin.
Cloud Spanner Database Admin API
The Cloud Spanner Database Admin API can be used to create,
drop, and list databases. It also enables updating the schema of
pre-existing databases. It can be also used to create, delete
and list backups for a database and to restore from an existing
backup.
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.
"""
_stubs: Dict[str, Callable]
def __init__(
self,
*,
host: str = "spanner.googleapis.com",
credentials: credentials.Credentials = None,
credentials_file: str = None,
scopes: Sequence[str] = None,
channel: grpc.Channel = None,
api_mtls_endpoint: str = None,
client_cert_source: Callable[[], Tuple[bytes, bytes]] = None,
ssl_channel_credentials: grpc.ChannelCredentials = None,
quota_project_id: Optional[str] = None,
client_info: gapic_v1.client_info.ClientInfo = DEFAULT_CLIENT_INFO,
) -> 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 list of scopes. This argument is
ignored if ``channel`` is provided.
channel (Optional[grpc.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 applicatin 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 grpc channel. It is ignored if ``channel`` 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.
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._ssl_channel_credentials = ssl_channel_credentials
if channel:
# Sanity check: Ensure that channel and credentials are not both
# provided.
credentials = False
# If a channel was explicitly provided, set it.
self._grpc_channel = channel
self._ssl_channel_credentials = None
elif api_mtls_endpoint:
warnings.warn(
"api_mtls_endpoint and client_cert_source are deprecated",
DeprecationWarning,
)
host = (
api_mtls_endpoint
if ":" in api_mtls_endpoint
else api_mtls_endpoint + ":443"
)
if credentials is None:
credentials, _ = auth.default(
scopes=self.AUTH_SCOPES, quota_project_id=quota_project_id
)
# Create SSL credentials with client_cert_source or application
# default SSL credentials.
if client_cert_source:
cert, key = client_cert_source()
ssl_credentials = grpc.ssl_channel_credentials(
certificate_chain=cert, private_key=key
)
else:
ssl_credentials = SslCredentials().ssl_credentials
# create a new channel. The provided one is ignored.
self._grpc_channel = type(self).create_channel(
host,
credentials=credentials,
credentials_file=credentials_file,
ssl_credentials=ssl_credentials,
scopes=scopes or self.AUTH_SCOPES,
quota_project_id=quota_project_id,
)
self._ssl_channel_credentials = ssl_credentials
else:
host = host if ":" in host else host + ":443"
if credentials is None:
credentials, _ = auth.default(
scopes=self.AUTH_SCOPES, quota_project_id=quota_project_id
)
# create a new channel. The provided one is ignored.
self._grpc_channel = type(self).create_channel(
host,
credentials=credentials,
credentials_file=credentials_file,
ssl_credentials=ssl_channel_credentials,
scopes=scopes or self.AUTH_SCOPES,
quota_project_id=quota_project_id,
)
self._stubs = {} # type: Dict[str, Callable]
# Run the base constructor.
super().__init__(
host=host,
credentials=credentials,
credentials_file=credentials_file,
scopes=scopes or self.AUTH_SCOPES,
quota_project_id=quota_project_id,
client_info=client_info,
)
@classmethod
def create_channel(
cls,
host: str = "spanner.googleapis.com",
credentials: credentials.Credentials = None,
credentials_file: str = None,
scopes: Optional[Sequence[str]] = None,
quota_project_id: Optional[str] = None,
**kwargs,
) -> grpc.Channel:
"""Create and return a gRPC channel object.
Args:
address (Optionsl[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 mutually exclusive with credentials.
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:
grpc.Channel: A gRPC channel object.
Raises:
google.api_core.exceptions.DuplicateCredentialArgs: If both ``credentials``
and ``credentials_file`` are passed.
"""
scopes = scopes or cls.AUTH_SCOPES
return grpc_helpers.create_channel(
host,
credentials=credentials,
credentials_file=credentials_file,
scopes=scopes,
quota_project_id=quota_project_id,
**kwargs,
)
@property
def grpc_channel(self) -> grpc.Channel:
"""Return the channel designed to connect to this service.
"""
return self._grpc_channel
@property
def operations_client(self) -> operations_v1.OperationsClient:
"""Create the client designed to process long-running operations.
This property caches on the instance; repeated calls return the same
client.
"""
# Sanity check: Only create a new client if we do not already have one.
if "operations_client" not in self.__dict__:
self.__dict__["operations_client"] = operations_v1.OperationsClient(
self.grpc_channel
)
# Return the client from cache.
return self.__dict__["operations_client"]
@property
def list_databases(
self,
) -> Callable[
[spanner_database_admin.ListDatabasesRequest],
spanner_database_admin.ListDatabasesResponse,
]:
r"""Return a callable for the list databases method over gRPC.
Lists Cloud Spanner databases.
Returns:
Callable[[~.ListDatabasesRequest],
~.ListDatabasesResponse]:
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_databases" not in self._stubs:
self._stubs["list_databases"] = self.grpc_channel.unary_unary(
"/google.spanner.admin.database.v1.DatabaseAdmin/ListDatabases",
request_serializer=spanner_database_admin.ListDatabasesRequest.serialize,
response_deserializer=spanner_database_admin.ListDatabasesResponse.deserialize,
)
return self._stubs["list_databases"]
@property
def create_database(
self,
) -> Callable[[spanner_database_admin.CreateDatabaseRequest], operations.Operation]:
r"""Return a callable for the create database method over gRPC.
Creates a new Cloud Spanner database and starts to prepare it
for serving. The returned [long-running
operation][google.longrunning.Operation] will have a name of the
format ``<database_name>/operations/<operation_id>`` and can be
used to track preparation of the database. The
[metadata][google.longrunning.Operation.metadata] field type is
[CreateDatabaseMetadata][google.spanner.admin.database.v1.CreateDatabaseMetadata].
The [response][google.longrunning.Operation.response] field type
is [Database][google.spanner.admin.database.v1.Database], if
successful.
Returns:
Callable[[~.CreateDatabaseRequest],
~.Operation]:
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_database" not in self._stubs:
self._stubs["create_database"] = self.grpc_channel.unary_unary(
"/google.spanner.admin.database.v1.DatabaseAdmin/CreateDatabase",
request_serializer=spanner_database_admin.CreateDatabaseRequest.serialize,
response_deserializer=operations.Operation.FromString,
)
return self._stubs["create_database"]
@property
def get_database(
self,
) -> Callable[
[spanner_database_admin.GetDatabaseRequest], spanner_database_admin.Database
]:
r"""Return a callable for the get database method over gRPC.
Gets the state of a Cloud Spanner database.
Returns:
Callable[[~.GetDatabaseRequest],
~.Database]:
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_database" not in self._stubs:
self._stubs["get_database"] = self.grpc_channel.unary_unary(
"/google.spanner.admin.database.v1.DatabaseAdmin/GetDatabase",
request_serializer=spanner_database_admin.GetDatabaseRequest.serialize,
response_deserializer=spanner_database_admin.Database.deserialize,
)
return self._stubs["get_database"]
@property
def update_database_ddl(
self,
) -> Callable[
[spanner_database_admin.UpdateDatabaseDdlRequest], operations.Operation
]:
r"""Return a callable for the update database ddl method over gRPC.
Updates the schema of a Cloud Spanner database by
creating/altering/dropping tables, columns, indexes, etc. The
returned [long-running operation][google.longrunning.Operation]
will have a name of the format
``<database_name>/operations/<operation_id>`` and can be used to
track execution of the schema change(s). The
[metadata][google.longrunning.Operation.metadata] field type is
[UpdateDatabaseDdlMetadata][google.spanner.admin.database.v1.UpdateDatabaseDdlMetadata].
The operation has no response.
Returns:
Callable[[~.UpdateDatabaseDdlRequest],
~.Operation]:
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_database_ddl" not in self._stubs:
self._stubs["update_database_ddl"] = self.grpc_channel.unary_unary(
"/google.spanner.admin.database.v1.DatabaseAdmin/UpdateDatabaseDdl",
request_serializer=spanner_database_admin.UpdateDatabaseDdlRequest.serialize,
response_deserializer=operations.Operation.FromString,
)
return self._stubs["update_database_ddl"]
@property
def drop_database(
self,
) -> Callable[[spanner_database_admin.DropDatabaseRequest], empty.Empty]:
r"""Return a callable for the drop database method over gRPC.
Drops (aka deletes) a Cloud Spanner database. Completed backups
for the database will be retained according to their
``expire_time``.
Returns:
Callable[[~.DropDatabaseRequest],
~.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 "drop_database" not in self._stubs:
self._stubs["drop_database"] = self.grpc_channel.unary_unary(
"/google.spanner.admin.database.v1.DatabaseAdmin/DropDatabase",
request_serializer=spanner_database_admin.DropDatabaseRequest.serialize,
response_deserializer=empty.Empty.FromString,
)
return self._stubs["drop_database"]
@property
def get_database_ddl(
self,
) -> Callable[
[spanner_database_admin.GetDatabaseDdlRequest],
spanner_database_admin.GetDatabaseDdlResponse,
]:
r"""Return a callable for the get database ddl method over gRPC.
Returns the schema of a Cloud Spanner database as a list of
formatted DDL statements. This method does not show pending
schema updates, those may be queried using the
[Operations][google.longrunning.Operations] API.
Returns:
Callable[[~.GetDatabaseDdlRequest],
~.GetDatabaseDdlResponse]:
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_database_ddl" not in self._stubs:
self._stubs["get_database_ddl"] = self.grpc_channel.unary_unary(
"/google.spanner.admin.database.v1.DatabaseAdmin/GetDatabaseDdl",
request_serializer=spanner_database_admin.GetDatabaseDdlRequest.serialize,
response_deserializer=spanner_database_admin.GetDatabaseDdlResponse.deserialize,
)
return self._stubs["get_database_ddl"]
@property
def set_iam_policy(
self,
) -> Callable[[iam_policy.SetIamPolicyRequest], policy.Policy]:
r"""Return a callable for the set iam policy method over gRPC.
Sets the access control policy on a database or backup resource.
Replaces any existing policy.
Authorization requires ``spanner.databases.setIamPolicy``
permission on
[resource][google.iam.v1.SetIamPolicyRequest.resource]. For
backups, authorization requires ``spanner.backups.setIamPolicy``
permission on
[resource][google.iam.v1.SetIamPolicyRequest.resource].
Returns:
Callable[[~.SetIamPolicyRequest],
~.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.spanner.admin.database.v1.DatabaseAdmin/SetIamPolicy",
request_serializer=iam_policy.SetIamPolicyRequest.SerializeToString,
response_deserializer=policy.Policy.FromString,
)
return self._stubs["set_iam_policy"]
@property
def get_iam_policy(
self,
) -> Callable[[iam_policy.GetIamPolicyRequest], policy.Policy]:
r"""Return a callable for the get iam policy method over gRPC.
Gets the access control policy for a database or backup
resource. Returns an empty policy if a database or backup exists
but does not have a policy set.
Authorization requires ``spanner.databases.getIamPolicy``
permission on
[resource][google.iam.v1.GetIamPolicyRequest.resource]. For
backups, authorization requires ``spanner.backups.getIamPolicy``
permission on
[resource][google.iam.v1.GetIamPolicyRequest.resource].
Returns:
Callable[[~.GetIamPolicyRequest],
~.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.spanner.admin.database.v1.DatabaseAdmin/GetIamPolicy",
request_serializer=iam_policy.GetIamPolicyRequest.SerializeToString,
response_deserializer=policy.Policy.FromString,
)
return self._stubs["get_iam_policy"]
@property
def test_iam_permissions(
self,
) -> Callable[
[iam_policy.TestIamPermissionsRequest], iam_policy.TestIamPermissionsResponse
]:
r"""Return a callable for the test iam permissions method over gRPC.
Returns permissions that the caller has on the specified
database or backup resource.
Attempting this RPC on a non-existent Cloud Spanner database
will result in a NOT_FOUND error if the user has
``spanner.databases.list`` permission on the containing Cloud
Spanner instance. Otherwise returns an empty set of permissions.
Calling this method on a backup that does not exist will result
in a NOT_FOUND error if the user has ``spanner.backups.list``
permission on the containing instance.
Returns:
Callable[[~.TestIamPermissionsRequest],
~.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.spanner.admin.database.v1.DatabaseAdmin/TestIamPermissions",
request_serializer=iam_policy.TestIamPermissionsRequest.SerializeToString,
response_deserializer=iam_policy.TestIamPermissionsResponse.FromString,
)
return self._stubs["test_iam_permissions"]
@property
def create_backup(
self,
) -> Callable[[gsad_backup.CreateBackupRequest], operations.Operation]:
r"""Return a callable for the create backup method over gRPC.
Starts creating a new Cloud Spanner Backup. The returned backup
[long-running operation][google.longrunning.Operation] will have
a name of the format
``projects/<project>/instances/<instance>/backups/<backup>/operations/<operation_id>``
and can be used to track creation of the backup. The
[metadata][google.longrunning.Operation.metadata] field type is
[CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata].
The [response][google.longrunning.Operation.response] field type
is [Backup][google.spanner.admin.database.v1.Backup], if
successful. Cancelling the returned operation will stop the
creation and delete the backup. There can be only one pending
backup creation per database. Backup creation of different
databases can run concurrently.
Returns:
Callable[[~.CreateBackupRequest],
~.Operation]:
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_backup" not in self._stubs:
self._stubs["create_backup"] = self.grpc_channel.unary_unary(
"/google.spanner.admin.database.v1.DatabaseAdmin/CreateBackup",
request_serializer=gsad_backup.CreateBackupRequest.serialize,
response_deserializer=operations.Operation.FromString,
)
return self._stubs["create_backup"]
@property
def get_backup(self) -> Callable[[backup.GetBackupRequest], backup.Backup]:
r"""Return a callable for the get backup method over gRPC.
Gets metadata on a pending or completed
[Backup][google.spanner.admin.database.v1.Backup].
Returns:
Callable[[~.GetBackupRequest],
~.Backup]:
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_backup" not in self._stubs:
self._stubs["get_backup"] = self.grpc_channel.unary_unary(
"/google.spanner.admin.database.v1.DatabaseAdmin/GetBackup",
request_serializer=backup.GetBackupRequest.serialize,
response_deserializer=backup.Backup.deserialize,
)
return self._stubs["get_backup"]
@property
def update_backup(
self,
) -> Callable[[gsad_backup.UpdateBackupRequest], gsad_backup.Backup]:
r"""Return a callable for the update backup method over gRPC.
Updates a pending or completed
[Backup][google.spanner.admin.database.v1.Backup].
Returns:
Callable[[~.UpdateBackupRequest],
~.Backup]:
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_backup" not in self._stubs:
self._stubs["update_backup"] = self.grpc_channel.unary_unary(
"/google.spanner.admin.database.v1.DatabaseAdmin/UpdateBackup",
request_serializer=gsad_backup.UpdateBackupRequest.serialize,
response_deserializer=gsad_backup.Backup.deserialize,
)
return self._stubs["update_backup"]
@property
def delete_backup(self) -> Callable[[backup.DeleteBackupRequest], empty.Empty]:
r"""Return a callable for the delete backup method over gRPC.
Deletes a pending or completed
[Backup][google.spanner.admin.database.v1.Backup].
Returns:
Callable[[~.DeleteBackupRequest],
~.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_backup" not in self._stubs:
self._stubs["delete_backup"] = self.grpc_channel.unary_unary(
"/google.spanner.admin.database.v1.DatabaseAdmin/DeleteBackup",
request_serializer=backup.DeleteBackupRequest.serialize,
response_deserializer=empty.Empty.FromString,
)
return self._stubs["delete_backup"]
@property
def list_backups(
self,
) -> Callable[[backup.ListBackupsRequest], backup.ListBackupsResponse]:
r"""Return a callable for the list backups method over gRPC.
Lists completed and pending backups. Backups returned are
ordered by ``create_time`` in descending order, starting from
the most recent ``create_time``.
Returns:
Callable[[~.ListBackupsRequest],
~.ListBackupsResponse]:
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_backups" not in self._stubs:
self._stubs["list_backups"] = self.grpc_channel.unary_unary(
"/google.spanner.admin.database.v1.DatabaseAdmin/ListBackups",
request_serializer=backup.ListBackupsRequest.serialize,
response_deserializer=backup.ListBackupsResponse.deserialize,
)
return self._stubs["list_backups"]
@property
def restore_database(
self,
) -> Callable[
[spanner_database_admin.RestoreDatabaseRequest], operations.Operation
]:
r"""Return a callable for the restore database method over gRPC.
Create a new database by restoring from a completed backup. The
new database must be in the same project and in an instance with
the same instance configuration as the instance containing the
backup. The returned database [long-running
operation][google.longrunning.Operation] has a name of the
format
``projects/<project>/instances/<instance>/databases/<database>/operations/<operation_id>``,
and can be used to track the progress of the operation, and to
cancel it. The [metadata][google.longrunning.Operation.metadata]
field type is
[RestoreDatabaseMetadata][google.spanner.admin.database.v1.RestoreDatabaseMetadata].
The [response][google.longrunning.Operation.response] type is
[Database][google.spanner.admin.database.v1.Database], if
successful. Cancelling the returned operation will stop the
restore and delete the database. There can be only one database
being restored into an instance at a time. Once the restore
operation completes, a new restore operation can be initiated,
without waiting for the optimize operation associated with the
first restore to complete.
Returns:
Callable[[~.RestoreDatabaseRequest],
~.Operation]:
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 "restore_database" not in self._stubs:
self._stubs["restore_database"] = self.grpc_channel.unary_unary(
"/google.spanner.admin.database.v1.DatabaseAdmin/RestoreDatabase",
request_serializer=spanner_database_admin.RestoreDatabaseRequest.serialize,
response_deserializer=operations.Operation.FromString,
)
return self._stubs["restore_database"]
@property
def list_database_operations(
self,
) -> Callable[
[spanner_database_admin.ListDatabaseOperationsRequest],
spanner_database_admin.ListDatabaseOperationsResponse,
]:
r"""Return a callable for the list database operations method over gRPC.
Lists database
[longrunning-operations][google.longrunning.Operation]. A
database operation has a name of the form
``projects/<project>/instances/<instance>/databases/<database>/operations/<operation>``.
The long-running operation
[metadata][google.longrunning.Operation.metadata] field type
``metadata.type_url`` describes the type of the metadata.
Operations returned include those that have
completed/failed/canceled within the last 7 days, and pending
operations.
Returns:
Callable[[~.ListDatabaseOperationsRequest],
~.ListDatabaseOperationsResponse]:
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_database_operations" not in self._stubs:
self._stubs["list_database_operations"] = self.grpc_channel.unary_unary(
"/google.spanner.admin.database.v1.DatabaseAdmin/ListDatabaseOperations",
request_serializer=spanner_database_admin.ListDatabaseOperationsRequest.serialize,
response_deserializer=spanner_database_admin.ListDatabaseOperationsResponse.deserialize,
)
return self._stubs["list_database_operations"]
@property
def list_backup_operations(
self,
) -> Callable[
[backup.ListBackupOperationsRequest], backup.ListBackupOperationsResponse
]:
r"""Return a callable for the list backup operations method over gRPC.
Lists the backup [long-running
operations][google.longrunning.Operation] in the given instance.
A backup operation has a name of the form
``projects/<project>/instances/<instance>/backups/<backup>/operations/<operation>``.
The long-running operation
[metadata][google.longrunning.Operation.metadata] field type
``metadata.type_url`` describes the type of the metadata.
Operations returned include those that have
completed/failed/canceled within the last 7 days, and pending
operations. Operations returned are ordered by
``operation.metadata.value.progress.start_time`` in descending
order starting from the most recently started operation.
Returns:
Callable[[~.ListBackupOperationsRequest],
~.ListBackupOperationsResponse]:
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_backup_operations" not in self._stubs:
self._stubs["list_backup_operations"] = self.grpc_channel.unary_unary(
"/google.spanner.admin.database.v1.DatabaseAdmin/ListBackupOperations",
request_serializer=backup.ListBackupOperationsRequest.serialize,
response_deserializer=backup.ListBackupOperationsResponse.deserialize,
)
return self._stubs["list_backup_operations"]
__all__ = ("DatabaseAdminGrpcTransport",)