Class DataprocMetastoreFederationClient (1.9.0)

DataprocMetastoreFederationClient(*, credentials: Optional[google.auth.credentials.Credentials] = None, transport: Optional[Union[str, google.cloud.metastore_v1.services.dataproc_metastore_federation.transports.base.DataprocMetastoreFederationTransport]] = None, client_options: Optional[Union[google.api_core.client_options.ClientOptions, dict]] = None, client_info: google.api_core.gapic_v1.client_info.ClientInfo = <google.api_core.gapic_v1.client_info.ClientInfo object>)

Configures and manages metastore federation services. Dataproc Metastore Federation Service allows federating a collection of backend metastores like BigQuery, Dataplex Lakes, and other Dataproc Metastores. The Federation Service exposes a gRPC URL through which metadata from the backend metastores are served at query time.

The Dataproc Metastore Federation API defines the following resource model:

The service works with a collection of Google Cloud projects.
Each project has a collection of available locations.
Each location has a collection of federations.
Dataproc Metastore Federations are resources with names of the form: projects/{project_number}/locations/{location_id}/federations/{federation_id}.

Properties

transport

Returns the transport used by the client instance.

Returns

Type	Description
`DataprocMetastoreFederationTransport`	The transport used by the client instance.

Methods

DataprocMetastoreFederationClient

DataprocMetastoreFederationClient(*, credentials: Optional[google.auth.credentials.Credentials] = None, transport: Optional[Union[str, google.cloud.metastore_v1.services.dataproc_metastore_federation.transports.base.DataprocMetastoreFederationTransport]] = None, client_options: Optional[Union[google.api_core.client_options.ClientOptions, dict]] = None, client_info: google.api_core.gapic_v1.client_info.ClientInfo = <google.api_core.gapic_v1.client_info.ClientInfo object>)

Instantiates the dataproc metastore federation client.

Parameters

Name	Description
`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, DataprocMetastoreFederationTransport]` 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.

Exceptions

Type	Description
`google.auth.exceptions.MutualTLSChannelError`	If mutual TLS transport creation failed for any reason.

exit

__exit__(type, value, traceback)

Releases underlying transport's resources.

common_billing_account_path

common_billing_account_path(billing_account: str)

Returns a fully-qualified billing_account string.

common_folder_path

common_folder_path(folder: str)

Returns a fully-qualified folder string.

common_location_path

common_location_path(project: str, location: str)

Returns a fully-qualified location string.

common_organization_path

common_organization_path(organization: str)

Returns a fully-qualified organization string.

common_project_path

common_project_path(project: str)

Returns a fully-qualified project string.

create_federation

create_federation(request: Optional[Union[google.cloud.metastore_v1.types.metastore_federation.CreateFederationRequest, dict]] = None, *, parent: Optional[str] = None, federation: Optional[google.cloud.metastore_v1.types.metastore_federation.Federation] = None, federation_id: Optional[str] = None, retry: Union[google.api_core.retry.Retry, google.api_core.gapic_v1.method._MethodDefault] = <_MethodDefault._DEFAULT_VALUE: <object object>>, timeout: Union[float, object] = <_MethodDefault._DEFAULT_VALUE: <object object>>, metadata: Sequence[Tuple[str, str]] = ())

Creates a metastore federation in a project and location.

# This snippet has been automatically generated and should be regarded as a
# code template only.
# It will require modifications to work:
# - It may require correct/in-range values for request initialization.
# - It may require specifying regional endpoints when creating the service
#   client as shown in:
#   https://googleapis.dev/python/google-api-core/latest/client_options.html
from google.cloud import metastore_v1

def sample_create_federation():
    # Create a client
    client = metastore_v1.DataprocMetastoreFederationClient()

    # Initialize request argument(s)
    request = metastore_v1.CreateFederationRequest(
        parent="parent_value",
        federation_id="federation_id_value",
    )

    # Make the request
    operation = client.create_federation(request=request)

    print("Waiting for operation to complete...")

    response = operation.result()

    # Handle the response
    print(response)

Parameters

Name	Description
`request`	`Union[google.cloud.metastore_v1.types.CreateFederationRequest, dict]` The request object. Request message for CreateFederation.
`parent`	`str` Required. The relative resource name of the location in which to create a federation service, in the following form: `projects/{project_number}/locations/{location_id}`. This corresponds to the `parent` field on the `request` instance; if `request` is provided, this should not be set.
`federation`	`google.cloud.metastore_v1.types.Federation` Required. The Metastore Federation to create. The `name` field is ignored. The ID of the created metastore federation must be provided in the request's `federation_id` field. This corresponds to the `federation` field on the `request` instance; if `request` is provided, this should not be set.
`federation_id`	`str` Required. The ID of the metastore federation, which is used as the final component of the metastore federation's name. This value must be between 2 and 63 characters long inclusive, begin with a letter, end with a letter or number, and consist of alpha-numeric ASCII characters or hyphens. This corresponds to the `federation_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

Type	Description
`google.api_core.operation.Operation`	An object representing a long-running operation. The result type for the operation will be Federation Represents a federation of multiple backend metastores.

delete_federation

delete_federation(request: Optional[Union[google.cloud.metastore_v1.types.metastore_federation.DeleteFederationRequest, dict]] = None, *, name: Optional[str] = None, retry: Union[google.api_core.retry.Retry, google.api_core.gapic_v1.method._MethodDefault] = <_MethodDefault._DEFAULT_VALUE: <object object>>, timeout: Union[float, object] = <_MethodDefault._DEFAULT_VALUE: <object object>>, metadata: Sequence[Tuple[str, str]] = ())

Deletes a single federation.

# This snippet has been automatically generated and should be regarded as a
# code template only.
# It will require modifications to work:
# - It may require correct/in-range values for request initialization.
# - It may require specifying regional endpoints when creating the service
#   client as shown in:
#   https://googleapis.dev/python/google-api-core/latest/client_options.html
from google.cloud import metastore_v1

def sample_delete_federation():
    # Create a client
    client = metastore_v1.DataprocMetastoreFederationClient()

    # Initialize request argument(s)
    request = metastore_v1.DeleteFederationRequest(
        name="name_value",
    )

    # Make the request
    operation = client.delete_federation(request=request)

    print("Waiting for operation to complete...")

    response = operation.result()

    # Handle the response
    print(response)

Parameters

Name	Description
`request`	`Union[google.cloud.metastore_v1.types.DeleteFederationRequest, dict]` The request object. Request message for DeleteFederation.
`name`	`str` Required. The relative resource name of the metastore federation to delete, in the following form: `projects/{project_number}/locations/{location_id}/federations/{federation_id}`. This corresponds to the `name` 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

Type Description

google.api_core.operation.Operation An object representing a long-running operation. The result type for the operation will be google.protobuf.empty_pb2.Empty A generic empty message that you can re-use to avoid defining duplicated empty messages in your APIs. A typical example is to use it as the request or the response type of an API method. For instance: service Foo { rpc Bar(google.protobuf.Empty) returns (google.protobuf.Empty); }

federation_path

federation_path(project: str, location: str, federation: str)

Returns a fully-qualified federation string.

from_service_account_file

from_service_account_file(filename: str, *args, **kwargs)

Creates an instance of this client using the provided credentials file.

Parameter

Name	Description
`filename`	`str` The path to the service account private key json file.

Returns

Type	Description
`DataprocMetastoreFederationClient`	The constructed client.

from_service_account_info

from_service_account_info(info: dict, *args, **kwargs)

Creates an instance of this client using the provided credentials info.

Parameter

Name	Description
`info`	`dict` The service account private key info.

Returns

Type	Description
`DataprocMetastoreFederationClient`	The constructed client.

from_service_account_json

from_service_account_json(filename: str, *args, **kwargs)

Creates an instance of this client using the provided credentials file.

Parameter

Name	Description
`filename`	`str` The path to the service account private key json file.

Returns

Type	Description
`DataprocMetastoreFederationClient`	The constructed client.

get_federation

get_federation(request: Optional[Union[google.cloud.metastore_v1.types.metastore_federation.GetFederationRequest, dict]] = None, *, name: Optional[str] = None, retry: Union[google.api_core.retry.Retry, google.api_core.gapic_v1.method._MethodDefault] = <_MethodDefault._DEFAULT_VALUE: <object object>>, timeout: Union[float, object] = <_MethodDefault._DEFAULT_VALUE: <object object>>, metadata: Sequence[Tuple[str, str]] = ())

Gets the details of a single federation.

# This snippet has been automatically generated and should be regarded as a
# code template only.
# It will require modifications to work:
# - It may require correct/in-range values for request initialization.
# - It may require specifying regional endpoints when creating the service
#   client as shown in:
#   https://googleapis.dev/python/google-api-core/latest/client_options.html
from google.cloud import metastore_v1

def sample_get_federation():
    # Create a client
    client = metastore_v1.DataprocMetastoreFederationClient()

    # Initialize request argument(s)
    request = metastore_v1.GetFederationRequest(
        name="name_value",
    )

    # Make the request
    response = client.get_federation(request=request)

    # Handle the response
    print(response)

Parameters

Name	Description
`request`	`Union[google.cloud.metastore_v1.types.GetFederationRequest, dict]` The request object. Request message for GetFederation.
`name`	`str` Required. The relative resource name of the metastore federation to retrieve, in the following form: `projects/{project_number}/locations/{location_id}/federations/{federation_id}`. This corresponds to the `name` 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

Type	Description
`google.cloud.metastore_v1.types.Federation`	Represents a federation of multiple backend metastores.

get_mtls_endpoint_and_cert_source

get_mtls_endpoint_and_cert_source(
    client_options: Optional[google.api_core.client_options.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.

Parameter

Name	Description
`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.

Exceptions

Type	Description
`google.auth.exceptions.MutualTLSChannelError`	If any errors happen.

Returns

Type	Description
`Tuple[str, Callable[[], Tuple[bytes, bytes]]]`	returns the API endpoint and the client cert source to use.

list_federations

list_federations(request: Optional[Union[google.cloud.metastore_v1.types.metastore_federation.ListFederationsRequest, dict]] = None, *, parent: Optional[str] = None, retry: Union[google.api_core.retry.Retry, google.api_core.gapic_v1.method._MethodDefault] = <_MethodDefault._DEFAULT_VALUE: <object object>>, timeout: Union[float, object] = <_MethodDefault._DEFAULT_VALUE: <object object>>, metadata: Sequence[Tuple[str, str]] = ())

Lists federations in a project and location.

# This snippet has been automatically generated and should be regarded as a
# code template only.
# It will require modifications to work:
# - It may require correct/in-range values for request initialization.
# - It may require specifying regional endpoints when creating the service
#   client as shown in:
#   https://googleapis.dev/python/google-api-core/latest/client_options.html
from google.cloud import metastore_v1

def sample_list_federations():
    # Create a client
    client = metastore_v1.DataprocMetastoreFederationClient()

    # Initialize request argument(s)
    request = metastore_v1.ListFederationsRequest(
        parent="parent_value",
    )

    # Make the request
    page_result = client.list_federations(request=request)

    # Handle the response
    for response in page_result:
        print(response)

Parameters

Name	Description
`request`	`Union[google.cloud.metastore_v1.types.ListFederationsRequest, dict]` The request object. Request message for ListFederations.
`parent`	`str` Required. The relative resource name of the location of metastore federations to list, in the following form: `projects/{project_number}/locations/{location_id}`. This corresponds to the `parent` 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

Type	Description
`google.cloud.metastore_v1.services.dataproc_metastore_federation.pagers.ListFederationsPager`	Response message for ListFederations Iterating over this object will yield results and resolve additional pages automatically.

parse_common_billing_account_path

parse_common_billing_account_path(path: str)

Parse a billing_account path into its component segments.

parse_common_folder_path

parse_common_folder_path(path: str)

Parse a folder path into its component segments.

parse_common_location_path

parse_common_location_path(path: str)

Parse a location path into its component segments.

parse_common_organization_path

parse_common_organization_path(path: str)

Parse a organization path into its component segments.

parse_common_project_path

parse_common_project_path(path: str)

Parse a project path into its component segments.

parse_federation_path

parse_federation_path(path: str)

Parses a federation path into its component segments.

update_federation

update_federation(request: Optional[Union[google.cloud.metastore_v1.types.metastore_federation.UpdateFederationRequest, dict]] = None, *, federation: Optional[google.cloud.metastore_v1.types.metastore_federation.Federation] = None, update_mask: Optional[google.protobuf.field_mask_pb2.FieldMask] = None, retry: Union[google.api_core.retry.Retry, google.api_core.gapic_v1.method._MethodDefault] = <_MethodDefault._DEFAULT_VALUE: <object object>>, timeout: Union[float, object] = <_MethodDefault._DEFAULT_VALUE: <object object>>, metadata: Sequence[Tuple[str, str]] = ())

Updates the fields of a federation.

# This snippet has been automatically generated and should be regarded as a
# code template only.
# It will require modifications to work:
# - It may require correct/in-range values for request initialization.
# - It may require specifying regional endpoints when creating the service
#   client as shown in:
#   https://googleapis.dev/python/google-api-core/latest/client_options.html
from google.cloud import metastore_v1

def sample_update_federation():
    # Create a client
    client = metastore_v1.DataprocMetastoreFederationClient()

    # Initialize request argument(s)
    request = metastore_v1.UpdateFederationRequest(
    )

    # Make the request
    operation = client.update_federation(request=request)

    print("Waiting for operation to complete...")

    response = operation.result()

    # Handle the response
    print(response)

Parameters

Name	Description
`request`	`Union[google.cloud.metastore_v1.types.UpdateFederationRequest, dict]` The request object. Request message for UpdateFederation.
`federation`	`google.cloud.metastore_v1.types.Federation` Required. The metastore federation to update. The server only merges fields in the service if they are specified in `update_mask`. The metastore federation's `name` field is used to identify the metastore service to be updated. This corresponds to the `federation` field on the `request` instance; if `request` is provided, this should not be set.
`update_mask`	`google.protobuf.field_mask_pb2.FieldMask` Required. A field mask used to specify the fields to be overwritten in the metastore federation resource by the update. Fields specified in the `update_mask` are relative to the resource (not to the full request). A field is overwritten if it is in the mask. This corresponds to the `update_mask` 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

Type	Description
`google.api_core.operation.Operation`	An object representing a long-running operation. The result type for the operation will be Federation Represents a federation of multiple backend metastores.