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client.py
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client.py
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# -*- coding: utf-8 -*-
# Copyright 2022 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 collections import OrderedDict
import os
import re
from typing import (
Dict,
Mapping,
MutableMapping,
MutableSequence,
Optional,
Iterable,
Sequence,
Tuple,
Type,
Union,
cast,
)
from google.cloud.bigtable_v2 import gapic_version as package_version
from google.api_core import client_options as client_options_lib
from google.api_core import exceptions as core_exceptions
from google.api_core import gapic_v1
from google.api_core import retry as retries
from google.auth import credentials as ga_credentials # type: ignore
from google.auth.transport import mtls # type: ignore
from google.auth.transport.grpc import SslCredentials # type: ignore
from google.auth.exceptions import MutualTLSChannelError # type: ignore
from google.oauth2 import service_account # type: ignore
try:
OptionalRetry = Union[retries.Retry, gapic_v1.method._MethodDefault]
except AttributeError: # pragma: NO COVER
OptionalRetry = Union[retries.Retry, object] # type: ignore
from google.cloud.bigtable_v2.types import bigtable
from google.cloud.bigtable_v2.types import data
from google.cloud.bigtable_v2.types import request_stats
from .transports.base import BigtableTransport, DEFAULT_CLIENT_INFO
from .transports.grpc import BigtableGrpcTransport
from .transports.grpc_asyncio import BigtableGrpcAsyncIOTransport
class BigtableClientMeta(type):
"""Metaclass for the Bigtable client.
This provides class-level methods for building and retrieving
support objects (e.g. transport) without polluting the client instance
objects.
"""
_transport_registry = OrderedDict() # type: Dict[str, Type[BigtableTransport]]
_transport_registry["grpc"] = BigtableGrpcTransport
_transport_registry["grpc_asyncio"] = BigtableGrpcAsyncIOTransport
def get_transport_class(
cls,
label: Optional[str] = None,
) -> Type[BigtableTransport]:
"""Returns an appropriate transport class.
Args:
label: The name of the desired transport. If none is
provided, then the first transport in the registry is used.
Returns:
The transport class to use.
"""
# If a specific transport is requested, return that one.
if label:
return cls._transport_registry[label]
# No transport is requested; return the default (that is, the first one
# in the dictionary).
return next(iter(cls._transport_registry.values()))
class BigtableClient(metaclass=BigtableClientMeta):
"""Service for reading from and writing to existing Bigtable
tables.
"""
@staticmethod
def _get_default_mtls_endpoint(api_endpoint):
"""Converts api endpoint to mTLS endpoint.
Convert "*.sandbox.googleapis.com" and "*.googleapis.com" to
"*.mtls.sandbox.googleapis.com" and "*.mtls.googleapis.com" respectively.
Args:
api_endpoint (Optional[str]): the api endpoint to convert.
Returns:
str: converted mTLS api endpoint.
"""
if not api_endpoint:
return api_endpoint
mtls_endpoint_re = re.compile(
r"(?P<name>[^.]+)(?P<mtls>\.mtls)?(?P<sandbox>\.sandbox)?(?P<googledomain>\.googleapis\.com)?"
)
m = mtls_endpoint_re.match(api_endpoint)
name, mtls, sandbox, googledomain = m.groups()
if mtls or not googledomain:
return api_endpoint
if sandbox:
return api_endpoint.replace(
"sandbox.googleapis.com", "mtls.sandbox.googleapis.com"
)
return api_endpoint.replace(".googleapis.com", ".mtls.googleapis.com")
DEFAULT_ENDPOINT = "bigtable.googleapis.com"
DEFAULT_MTLS_ENDPOINT = _get_default_mtls_endpoint.__func__( # type: ignore
DEFAULT_ENDPOINT
)
@classmethod
def from_service_account_info(cls, info: dict, *args, **kwargs):
"""Creates an instance of this client using the provided credentials
info.
Args:
info (dict): The service account private key info.
args: Additional arguments to pass to the constructor.
kwargs: Additional arguments to pass to the constructor.
Returns:
BigtableClient: The constructed client.
"""
credentials = service_account.Credentials.from_service_account_info(info)
kwargs["credentials"] = credentials
return cls(*args, **kwargs)
@classmethod
def from_service_account_file(cls, filename: str, *args, **kwargs):
"""Creates an instance of this client using the provided credentials
file.
Args:
filename (str): The path to the service account private key json
file.
args: Additional arguments to pass to the constructor.
kwargs: Additional arguments to pass to the constructor.
Returns:
BigtableClient: The constructed client.
"""
credentials = service_account.Credentials.from_service_account_file(filename)
kwargs["credentials"] = credentials
return cls(*args, **kwargs)
from_service_account_json = from_service_account_file
@property
def transport(self) -> BigtableTransport:
"""Returns the transport used by the client instance.
Returns:
BigtableTransport: The transport used by the client
instance.
"""
return self._transport
@staticmethod
def instance_path(
project: str,
instance: str,
) -> str:
"""Returns a fully-qualified instance string."""
return "projects/{project}/instances/{instance}".format(
project=project,
instance=instance,
)
@staticmethod
def parse_instance_path(path: str) -> Dict[str, str]:
"""Parses a instance path into its component segments."""
m = re.match(r"^projects/(?P<project>.+?)/instances/(?P<instance>.+?)$", path)
return m.groupdict() if m else {}
@staticmethod
def table_path(
project: str,
instance: str,
table: str,
) -> str:
"""Returns a fully-qualified table string."""
return "projects/{project}/instances/{instance}/tables/{table}".format(
project=project,
instance=instance,
table=table,
)
@staticmethod
def parse_table_path(path: str) -> Dict[str, str]:
"""Parses a table path into its component segments."""
m = re.match(
r"^projects/(?P<project>.+?)/instances/(?P<instance>.+?)/tables/(?P<table>.+?)$",
path,
)
return m.groupdict() if m else {}
@staticmethod
def common_billing_account_path(
billing_account: str,
) -> str:
"""Returns a fully-qualified billing_account string."""
return "billingAccounts/{billing_account}".format(
billing_account=billing_account,
)
@staticmethod
def parse_common_billing_account_path(path: str) -> Dict[str, str]:
"""Parse a billing_account path into its component segments."""
m = re.match(r"^billingAccounts/(?P<billing_account>.+?)$", path)
return m.groupdict() if m else {}
@staticmethod
def common_folder_path(
folder: str,
) -> str:
"""Returns a fully-qualified folder string."""
return "folders/{folder}".format(
folder=folder,
)
@staticmethod
def parse_common_folder_path(path: str) -> Dict[str, str]:
"""Parse a folder path into its component segments."""
m = re.match(r"^folders/(?P<folder>.+?)$", path)
return m.groupdict() if m else {}
@staticmethod
def common_organization_path(
organization: str,
) -> str:
"""Returns a fully-qualified organization string."""
return "organizations/{organization}".format(
organization=organization,
)
@staticmethod
def parse_common_organization_path(path: str) -> Dict[str, str]:
"""Parse a organization path into its component segments."""
m = re.match(r"^organizations/(?P<organization>.+?)$", path)
return m.groupdict() if m else {}
@staticmethod
def common_project_path(
project: str,
) -> str:
"""Returns a fully-qualified project string."""
return "projects/{project}".format(
project=project,
)
@staticmethod
def parse_common_project_path(path: str) -> Dict[str, str]:
"""Parse a project path into its component segments."""
m = re.match(r"^projects/(?P<project>.+?)$", path)
return m.groupdict() if m else {}
@staticmethod
def common_location_path(
project: str,
location: str,
) -> str:
"""Returns a fully-qualified location string."""
return "projects/{project}/locations/{location}".format(
project=project,
location=location,
)
@staticmethod
def parse_common_location_path(path: str) -> Dict[str, str]:
"""Parse a location path into its component segments."""
m = re.match(r"^projects/(?P<project>.+?)/locations/(?P<location>.+?)$", path)
return m.groupdict() if m else {}
@classmethod
def get_mtls_endpoint_and_cert_source(
cls, client_options: Optional[client_options_lib.ClientOptions] = None
):
"""Return the API endpoint and client cert source for mutual TLS.
The client cert source is determined in the following order:
(1) if `GOOGLE_API_USE_CLIENT_CERTIFICATE` environment variable is not "true", the
client cert source is None.
(2) if `client_options.client_cert_source` is provided, use the provided one; if the
default client cert source exists, use the default one; otherwise the client cert
source is None.
The API endpoint is determined in the following order:
(1) if `client_options.api_endpoint` if provided, use the provided one.
(2) if `GOOGLE_API_USE_CLIENT_CERTIFICATE` environment variable is "always", use the
default mTLS endpoint; if the environment variable is "never", use the default API
endpoint; otherwise if client cert source exists, use the default mTLS endpoint, otherwise
use the default API endpoint.
More details can be found at https://google.aip.dev/auth/4114.
Args:
client_options (google.api_core.client_options.ClientOptions): Custom options for the
client. Only the `api_endpoint` and `client_cert_source` properties may be used
in this method.
Returns:
Tuple[str, Callable[[], Tuple[bytes, bytes]]]: returns the API endpoint and the
client cert source to use.
Raises:
google.auth.exceptions.MutualTLSChannelError: If any errors happen.
"""
if client_options is None:
client_options = client_options_lib.ClientOptions()
use_client_cert = os.getenv("GOOGLE_API_USE_CLIENT_CERTIFICATE", "false")
use_mtls_endpoint = os.getenv("GOOGLE_API_USE_MTLS_ENDPOINT", "auto")
if use_client_cert not in ("true", "false"):
raise ValueError(
"Environment variable `GOOGLE_API_USE_CLIENT_CERTIFICATE` must be either `true` or `false`"
)
if use_mtls_endpoint not in ("auto", "never", "always"):
raise MutualTLSChannelError(
"Environment variable `GOOGLE_API_USE_MTLS_ENDPOINT` must be `never`, `auto` or `always`"
)
# Figure out the client cert source to use.
client_cert_source = None
if use_client_cert == "true":
if client_options.client_cert_source:
client_cert_source = client_options.client_cert_source
elif mtls.has_default_client_cert_source():
client_cert_source = mtls.default_client_cert_source()
# Figure out which api endpoint to use.
if client_options.api_endpoint is not None:
api_endpoint = client_options.api_endpoint
elif use_mtls_endpoint == "always" or (
use_mtls_endpoint == "auto" and client_cert_source
):
api_endpoint = cls.DEFAULT_MTLS_ENDPOINT
else:
api_endpoint = cls.DEFAULT_ENDPOINT
return api_endpoint, client_cert_source
def __init__(
self,
*,
credentials: Optional[ga_credentials.Credentials] = None,
transport: Optional[Union[str, BigtableTransport]] = None,
client_options: Optional[Union[client_options_lib.ClientOptions, dict]] = None,
client_info: gapic_v1.client_info.ClientInfo = DEFAULT_CLIENT_INFO,
) -> None:
"""Instantiates the bigtable client.
Args:
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.
transport (Union[str, BigtableTransport]): The
transport to use. If set to None, a transport is chosen
automatically.
client_options (Optional[Union[google.api_core.client_options.ClientOptions, dict]]): Custom options for the
client. It won't take effect if a ``transport`` instance is provided.
(1) The ``api_endpoint`` property can be used to override the
default endpoint provided by the client. GOOGLE_API_USE_MTLS_ENDPOINT
environment variable can also be used to override the endpoint:
"always" (always use the default mTLS endpoint), "never" (always
use the default regular endpoint) and "auto" (auto switch to the
default mTLS endpoint if client certificate is present, this is
the default value). However, the ``api_endpoint`` property takes
precedence if provided.
(2) If GOOGLE_API_USE_CLIENT_CERTIFICATE environment variable
is "true", then the ``client_cert_source`` property can be used
to provide client certificate for mutual TLS transport. If
not provided, the default SSL client certificate will be used if
present. If GOOGLE_API_USE_CLIENT_CERTIFICATE is "false" or not
set, no client certificate will be used.
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.
"""
if isinstance(client_options, dict):
client_options = client_options_lib.from_dict(client_options)
if client_options is None:
client_options = client_options_lib.ClientOptions()
client_options = cast(client_options_lib.ClientOptions, client_options)
api_endpoint, client_cert_source_func = self.get_mtls_endpoint_and_cert_source(
client_options
)
api_key_value = getattr(client_options, "api_key", None)
if api_key_value and credentials:
raise ValueError(
"client_options.api_key and credentials are mutually exclusive"
)
# Save or instantiate the transport.
# Ordinarily, we provide the transport, but allowing a custom transport
# instance provides an extensibility point for unusual situations.
if isinstance(transport, BigtableTransport):
# transport is a BigtableTransport instance.
if credentials or client_options.credentials_file or api_key_value:
raise ValueError(
"When providing a transport instance, "
"provide its credentials directly."
)
if client_options.scopes:
raise ValueError(
"When providing a transport instance, provide its scopes "
"directly."
)
self._transport = transport
else:
import google.auth._default # type: ignore
if api_key_value and hasattr(
google.auth._default, "get_api_key_credentials"
):
credentials = google.auth._default.get_api_key_credentials(
api_key_value
)
Transport = type(self).get_transport_class(transport)
self._transport = Transport(
credentials=credentials,
credentials_file=client_options.credentials_file,
host=api_endpoint,
scopes=client_options.scopes,
client_cert_source_for_mtls=client_cert_source_func,
quota_project_id=client_options.quota_project_id,
client_info=client_info,
always_use_jwt_access=True,
api_audience=client_options.api_audience,
)
def read_rows(
self,
request: Optional[Union[bigtable.ReadRowsRequest, dict]] = None,
*,
table_name: Optional[str] = None,
app_profile_id: Optional[str] = None,
retry: OptionalRetry = gapic_v1.method.DEFAULT,
timeout: Union[float, object] = gapic_v1.method.DEFAULT,
metadata: Sequence[Tuple[str, str]] = (),
) -> Iterable[bigtable.ReadRowsResponse]:
r"""Streams back the contents of all requested rows in
key order, optionally applying the same Reader filter to
each. Depending on their size, rows and cells may be
broken up across multiple responses, but atomicity of
each row will still be preserved. See the
ReadRowsResponse documentation for details.
Args:
request (Union[google.cloud.bigtable_v2.types.ReadRowsRequest, dict]):
The request object. Request message for
Bigtable.ReadRows.
table_name (str):
Required. The unique name of the table from which to
read. Values are of the form
``projects/<project>/instances/<instance>/tables/<table>``.
This corresponds to the ``table_name`` field
on the ``request`` instance; if ``request`` is provided, this
should not be set.
app_profile_id (str):
This value specifies routing for replication. This API
only accepts the empty value of app_profile_id.
This corresponds to the ``app_profile_id`` field
on the ``request`` instance; if ``request`` is provided, this
should not be set.
retry (google.api_core.retry.Retry): Designation of what errors, if any,
should be retried.
timeout (float): The timeout for this request.
metadata (Sequence[Tuple[str, str]]): Strings which should be
sent along with the request as metadata.
Returns:
Iterable[google.cloud.bigtable_v2.types.ReadRowsResponse]:
Response message for
Bigtable.ReadRows.
"""
# Create or coerce a protobuf request object.
# Quick check: If we got a request object, we should *not* have
# gotten any keyword arguments that map to the request.
has_flattened_params = any([table_name, app_profile_id])
if request is not None and has_flattened_params:
raise ValueError(
"If the `request` argument is set, then none of "
"the individual field arguments should be set."
)
# Minor optimization to avoid making a copy if the user passes
# in a bigtable.ReadRowsRequest.
# There's no risk of modifying the input as we've already verified
# there are no flattened fields.
if not isinstance(request, bigtable.ReadRowsRequest):
request = bigtable.ReadRowsRequest(request)
# If we have keyword arguments corresponding to fields on the
# request, apply these.
if table_name is not None:
request.table_name = table_name
if app_profile_id is not None:
request.app_profile_id = app_profile_id
# Wrap the RPC method; this adds retry and timeout information,
# and friendly error handling.
rpc = self._transport._wrapped_methods[self._transport.read_rows]
header_params = {}
routing_param_regex = re.compile(
"^(?P<table_name>projects/[^/]+/instances/[^/]+/tables/[^/]+)$"
)
regex_match = routing_param_regex.match(request.table_name)
if regex_match and regex_match.group("table_name"):
header_params["table_name"] = regex_match.group("table_name")
if request.app_profile_id:
header_params["app_profile_id"] = request.app_profile_id
if header_params:
metadata = tuple(metadata) + (
gapic_v1.routing_header.to_grpc_metadata(header_params),
)
# Send the request.
response = rpc(
request,
retry=retry,
timeout=timeout,
metadata=metadata,
)
# Done; return the response.
return response
def sample_row_keys(
self,
request: Optional[Union[bigtable.SampleRowKeysRequest, dict]] = None,
*,
table_name: Optional[str] = None,
app_profile_id: Optional[str] = None,
retry: OptionalRetry = gapic_v1.method.DEFAULT,
timeout: Union[float, object] = gapic_v1.method.DEFAULT,
metadata: Sequence[Tuple[str, str]] = (),
) -> Iterable[bigtable.SampleRowKeysResponse]:
r"""Returns a sample of row keys in the table. The
returned row keys will delimit contiguous sections of
the table of approximately equal size, which can be used
to break up the data for distributed tasks like
mapreduces.
Args:
request (Union[google.cloud.bigtable_v2.types.SampleRowKeysRequest, dict]):
The request object. Request message for
Bigtable.SampleRowKeys.
table_name (str):
Required. The unique name of the table from which to
sample row keys. Values are of the form
``projects/<project>/instances/<instance>/tables/<table>``.
This corresponds to the ``table_name`` field
on the ``request`` instance; if ``request`` is provided, this
should not be set.
app_profile_id (str):
This value specifies routing for
replication. If not specified, the
"default" application profile will be
used.
This corresponds to the ``app_profile_id`` field
on the ``request`` instance; if ``request`` is provided, this
should not be set.
retry (google.api_core.retry.Retry): Designation of what errors, if any,
should be retried.
timeout (float): The timeout for this request.
metadata (Sequence[Tuple[str, str]]): Strings which should be
sent along with the request as metadata.
Returns:
Iterable[google.cloud.bigtable_v2.types.SampleRowKeysResponse]:
Response message for
Bigtable.SampleRowKeys.
"""
# Create or coerce a protobuf request object.
# Quick check: If we got a request object, we should *not* have
# gotten any keyword arguments that map to the request.
has_flattened_params = any([table_name, app_profile_id])
if request is not None and has_flattened_params:
raise ValueError(
"If the `request` argument is set, then none of "
"the individual field arguments should be set."
)
# Minor optimization to avoid making a copy if the user passes
# in a bigtable.SampleRowKeysRequest.
# There's no risk of modifying the input as we've already verified
# there are no flattened fields.
if not isinstance(request, bigtable.SampleRowKeysRequest):
request = bigtable.SampleRowKeysRequest(request)
# If we have keyword arguments corresponding to fields on the
# request, apply these.
if table_name is not None:
request.table_name = table_name
if app_profile_id is not None:
request.app_profile_id = app_profile_id
# Wrap the RPC method; this adds retry and timeout information,
# and friendly error handling.
rpc = self._transport._wrapped_methods[self._transport.sample_row_keys]
header_params = {}
routing_param_regex = re.compile(
"^(?P<table_name>projects/[^/]+/instances/[^/]+/tables/[^/]+)$"
)
regex_match = routing_param_regex.match(request.table_name)
if regex_match and regex_match.group("table_name"):
header_params["table_name"] = regex_match.group("table_name")
if request.app_profile_id:
header_params["app_profile_id"] = request.app_profile_id
if header_params:
metadata = tuple(metadata) + (
gapic_v1.routing_header.to_grpc_metadata(header_params),
)
# Send the request.
response = rpc(
request,
retry=retry,
timeout=timeout,
metadata=metadata,
)
# Done; return the response.
return response
def mutate_row(
self,
request: Optional[Union[bigtable.MutateRowRequest, dict]] = None,
*,
table_name: Optional[str] = None,
row_key: Optional[bytes] = None,
mutations: Optional[MutableSequence[data.Mutation]] = None,
app_profile_id: Optional[str] = None,
retry: OptionalRetry = gapic_v1.method.DEFAULT,
timeout: Union[float, object] = gapic_v1.method.DEFAULT,
metadata: Sequence[Tuple[str, str]] = (),
) -> bigtable.MutateRowResponse:
r"""Mutates a row atomically. Cells already present in the row are
left unchanged unless explicitly changed by ``mutation``.
Args:
request (Union[google.cloud.bigtable_v2.types.MutateRowRequest, dict]):
The request object. Request message for
Bigtable.MutateRow.
table_name (str):
Required. The unique name of the table to which the
mutation should be applied. Values are of the form
``projects/<project>/instances/<instance>/tables/<table>``.
This corresponds to the ``table_name`` field
on the ``request`` instance; if ``request`` is provided, this
should not be set.
row_key (bytes):
Required. The key of the row to which
the mutation should be applied.
This corresponds to the ``row_key`` field
on the ``request`` instance; if ``request`` is provided, this
should not be set.
mutations (MutableSequence[google.cloud.bigtable_v2.types.Mutation]):
Required. Changes to be atomically
applied to the specified row. Entries
are applied in order, meaning that
earlier mutations can be masked by later
ones. Must contain at least one entry
and at most 100000.
This corresponds to the ``mutations`` field
on the ``request`` instance; if ``request`` is provided, this
should not be set.
app_profile_id (str):
This value specifies routing for
replication. If not specified, the
"default" application profile will be
used.
This corresponds to the ``app_profile_id`` field
on the ``request`` instance; if ``request`` is provided, this
should not be set.
retry (google.api_core.retry.Retry): Designation of what errors, if any,
should be retried.
timeout (float): The timeout for this request.
metadata (Sequence[Tuple[str, str]]): Strings which should be
sent along with the request as metadata.
Returns:
google.cloud.bigtable_v2.types.MutateRowResponse:
Response message for
Bigtable.MutateRow.
"""
# Create or coerce a protobuf request object.
# Quick check: If we got a request object, we should *not* have
# gotten any keyword arguments that map to the request.
has_flattened_params = any([table_name, row_key, mutations, app_profile_id])
if request is not None and has_flattened_params:
raise ValueError(
"If the `request` argument is set, then none of "
"the individual field arguments should be set."
)
# Minor optimization to avoid making a copy if the user passes
# in a bigtable.MutateRowRequest.
# There's no risk of modifying the input as we've already verified
# there are no flattened fields.
if not isinstance(request, bigtable.MutateRowRequest):
request = bigtable.MutateRowRequest(request)
# If we have keyword arguments corresponding to fields on the
# request, apply these.
if table_name is not None:
request.table_name = table_name
if row_key is not None:
request.row_key = row_key
if mutations is not None:
request.mutations = mutations
if app_profile_id is not None:
request.app_profile_id = app_profile_id
# Wrap the RPC method; this adds retry and timeout information,
# and friendly error handling.
rpc = self._transport._wrapped_methods[self._transport.mutate_row]
header_params = {}
routing_param_regex = re.compile(
"^(?P<table_name>projects/[^/]+/instances/[^/]+/tables/[^/]+)$"
)
regex_match = routing_param_regex.match(request.table_name)
if regex_match and regex_match.group("table_name"):
header_params["table_name"] = regex_match.group("table_name")
if request.app_profile_id:
header_params["app_profile_id"] = request.app_profile_id
if header_params:
metadata = tuple(metadata) + (
gapic_v1.routing_header.to_grpc_metadata(header_params),
)
# Send the request.
response = rpc(
request,
retry=retry,
timeout=timeout,
metadata=metadata,
)
# Done; return the response.
return response
def mutate_rows(
self,
request: Optional[Union[bigtable.MutateRowsRequest, dict]] = None,
*,
table_name: Optional[str] = None,
entries: Optional[MutableSequence[bigtable.MutateRowsRequest.Entry]] = None,
app_profile_id: Optional[str] = None,
retry: OptionalRetry = gapic_v1.method.DEFAULT,
timeout: Union[float, object] = gapic_v1.method.DEFAULT,
metadata: Sequence[Tuple[str, str]] = (),
) -> Iterable[bigtable.MutateRowsResponse]:
r"""Mutates multiple rows in a batch. Each individual row
is mutated atomically as in MutateRow, but the entire
batch is not executed atomically.
Args:
request (Union[google.cloud.bigtable_v2.types.MutateRowsRequest, dict]):
The request object. Request message for
BigtableService.MutateRows.
table_name (str):
Required. The unique name of the
table to which the mutations should be
applied.
This corresponds to the ``table_name`` field
on the ``request`` instance; if ``request`` is provided, this
should not be set.
entries (MutableSequence[google.cloud.bigtable_v2.types.MutateRowsRequest.Entry]):
Required. The row keys and
corresponding mutations to be applied in
bulk. Each entry is applied as an atomic
mutation, but the entries may be applied
in arbitrary order (even between entries
for the same row). At least one entry
must be specified, and in total the
entries can contain at most 100000
mutations.
This corresponds to the ``entries`` field
on the ``request`` instance; if ``request`` is provided, this
should not be set.
app_profile_id (str):
This value specifies routing for
replication. If not specified, the
"default" application profile will be
used.
This corresponds to the ``app_profile_id`` field
on the ``request`` instance; if ``request`` is provided, this
should not be set.
retry (google.api_core.retry.Retry): Designation of what errors, if any,
should be retried.
timeout (float): The timeout for this request.
metadata (Sequence[Tuple[str, str]]): Strings which should be
sent along with the request as metadata.
Returns:
Iterable[google.cloud.bigtable_v2.types.MutateRowsResponse]:
Response message for
BigtableService.MutateRows.
"""
# Create or coerce a protobuf request object.
# Quick check: If we got a request object, we should *not* have
# gotten any keyword arguments that map to the request.
has_flattened_params = any([table_name, entries, app_profile_id])
if request is not None and has_flattened_params:
raise ValueError(
"If the `request` argument is set, then none of "
"the individual field arguments should be set."
)
# Minor optimization to avoid making a copy if the user passes
# in a bigtable.MutateRowsRequest.
# There's no risk of modifying the input as we've already verified
# there are no flattened fields.
if not isinstance(request, bigtable.MutateRowsRequest):
request = bigtable.MutateRowsRequest(request)
# If we have keyword arguments corresponding to fields on the
# request, apply these.
if table_name is not None:
request.table_name = table_name
if entries is not None:
request.entries = entries
if app_profile_id is not None:
request.app_profile_id = app_profile_id
# Wrap the RPC method; this adds retry and timeout information,
# and friendly error handling.
rpc = self._transport._wrapped_methods[self._transport.mutate_rows]
header_params = {}
routing_param_regex = re.compile(
"^(?P<table_name>projects/[^/]+/instances/[^/]+/tables/[^/]+)$"
)
regex_match = routing_param_regex.match(request.table_name)
if regex_match and regex_match.group("table_name"):
header_params["table_name"] = regex_match.group("table_name")
if request.app_profile_id:
header_params["app_profile_id"] = request.app_profile_id
if header_params:
metadata = tuple(metadata) + (
gapic_v1.routing_header.to_grpc_metadata(header_params),
)
# Send the request.
response = rpc(
request,
retry=retry,
timeout=timeout,
metadata=metadata,
)
# Done; return the response.
return response
def check_and_mutate_row(
self,
request: Optional[Union[bigtable.CheckAndMutateRowRequest, dict]] = None,
*,
table_name: Optional[str] = None,
row_key: Optional[bytes] = None,
predicate_filter: Optional[data.RowFilter] = None,
true_mutations: Optional[MutableSequence[data.Mutation]] = None,
false_mutations: Optional[MutableSequence[data.Mutation]] = None,
app_profile_id: Optional[str] = None,
retry: OptionalRetry = gapic_v1.method.DEFAULT,
timeout: Union[float, object] = gapic_v1.method.DEFAULT,
metadata: Sequence[Tuple[str, str]] = (),
) -> bigtable.CheckAndMutateRowResponse:
r"""Mutates a row atomically based on the output of a
predicate Reader filter.
Args:
request (Union[google.cloud.bigtable_v2.types.CheckAndMutateRowRequest, dict]):
The request object. Request message for
Bigtable.CheckAndMutateRow.
table_name (str):
Required. The unique name of the table to which the
conditional mutation should be applied. Values are of
the form
``projects/<project>/instances/<instance>/tables/<table>``.
This corresponds to the ``table_name`` field
on the ``request`` instance; if ``request`` is provided, this
should not be set.
row_key (bytes):
Required. The key of the row to which
the conditional mutation should be
applied.
This corresponds to the ``row_key`` field
on the ``request`` instance; if ``request`` is provided, this
should not be set.
predicate_filter (google.cloud.bigtable_v2.types.RowFilter):
The filter to be applied to the contents of the
specified row. Depending on whether or not any results
are yielded, either ``true_mutations`` or
``false_mutations`` will be executed. If unset, checks
that the row contains any values at all.
This corresponds to the ``predicate_filter`` field
on the ``request`` instance; if ``request`` is provided, this
should not be set.
true_mutations (MutableSequence[google.cloud.bigtable_v2.types.Mutation]):
Changes to be atomically applied to the specified row if
``predicate_filter`` yields at least one cell when
applied to ``row_key``. Entries are applied in order,
meaning that earlier mutations can be masked by later
ones. Must contain at least one entry if
``false_mutations`` is empty, and at most 100000.
This corresponds to the ``true_mutations`` field
on the ``request`` instance; if ``request`` is provided, this
should not be set.
false_mutations (MutableSequence[google.cloud.bigtable_v2.types.Mutation]):
Changes to be atomically applied to the specified row if
``predicate_filter`` does not yield any cells when
applied to ``row_key``. Entries are applied in order,
meaning that earlier mutations can be masked by later
ones. Must contain at least one entry if
``true_mutations`` is empty, and at most 100000.
This corresponds to the ``false_mutations`` field
on the ``request`` instance; if ``request`` is provided, this
should not be set.
app_profile_id (str):
This value specifies routing for
replication. If not specified, the
"default" application profile will be
used.
This corresponds to the ``app_profile_id`` field
on the ``request`` instance; if ``request`` is provided, this
should not be set.
retry (google.api_core.retry.Retry): Designation of what errors, if any,
should be retried.
timeout (float): The timeout for this request.
metadata (Sequence[Tuple[str, str]]): Strings which should be
sent along with the request as metadata.
Returns:
google.cloud.bigtable_v2.types.CheckAndMutateRowResponse:
Response message for