# -*- 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.
#
from collections import OrderedDict
from distutils import util
import os
import re
from typing import Dict, Optional, Sequence, Tuple, Type, Union
import pkg_resources

from google.api_core import client_options as client_options_lib  # type: ignore
from google.api_core import exceptions as core_exceptions  # type: ignore
from google.api_core import gapic_v1  # type: ignore
from google.api_core import retry as retries  # type: ignore
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

OptionalRetry = Union[retries.Retry, object]

from google.api_core import operation  # type: ignore
from google.api_core import operation_async  # type: ignore
from google.cloud.domains_v1.services.domains import pagers
from google.cloud.domains_v1.types import domains
from google.protobuf import empty_pb2  # type: ignore
from google.protobuf import field_mask_pb2  # type: ignore
from google.protobuf import timestamp_pb2  # type: ignore
from google.type import money_pb2  # type: ignore
from .transports.base import DomainsTransport, DEFAULT_CLIENT_INFO
from .transports.grpc import DomainsGrpcTransport
from .transports.grpc_asyncio import DomainsGrpcAsyncIOTransport


class DomainsClientMeta(type):
    """Metaclass for the Domains 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[DomainsTransport]]
    _transport_registry["grpc"] = DomainsGrpcTransport
    _transport_registry["grpc_asyncio"] = DomainsGrpcAsyncIOTransport

    def get_transport_class(cls, label: str = None,) -> Type[DomainsTransport]:
        """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 DomainsClient(metaclass=DomainsClientMeta):
    """The Cloud Domains API enables management and configuration of
    domain names.
    """

    @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 = "domains.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:
            DomainsClient: 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:
            DomainsClient: 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) -> DomainsTransport:
        """Returns the transport used by the client instance.

        Returns:
            DomainsTransport: The transport used by the client
                instance.
        """
        return self._transport

    @staticmethod
    def registration_path(project: str, location: str, registration: str,) -> str:
        """Returns a fully-qualified registration string."""
        return "projects/{project}/locations/{location}/registrations/{registration}".format(
            project=project, location=location, registration=registration,
        )

    @staticmethod
    def parse_registration_path(path: str) -> Dict[str, str]:
        """Parses a registration path into its component segments."""
        m = re.match(
            r"^projects/(?P<project>.+?)/locations/(?P<location>.+?)/registrations/(?P<registration>.+?)$",
            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 {}

    def __init__(
        self,
        *,
        credentials: Optional[ga_credentials.Credentials] = None,
        transport: Union[str, DomainsTransport, None] = None,
        client_options: Optional[client_options_lib.ClientOptions] = None,
        client_info: gapic_v1.client_info.ClientInfo = DEFAULT_CLIENT_INFO,
    ) -> None:
        """Instantiates the domains 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, DomainsTransport]): The
                transport to use. If set to None, a transport is chosen
                automatically.
            client_options (google.api_core.client_options.ClientOptions): 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()

        # Create SSL credentials for mutual TLS if needed.
        use_client_cert = bool(
            util.strtobool(os.getenv("GOOGLE_API_USE_CLIENT_CERTIFICATE", "false"))
        )

        client_cert_source_func = None
        is_mtls = False
        if use_client_cert:
            if client_options.client_cert_source:
                is_mtls = True
                client_cert_source_func = client_options.client_cert_source
            else:
                is_mtls = mtls.has_default_client_cert_source()
                if is_mtls:
                    client_cert_source_func = mtls.default_client_cert_source()
                else:
                    client_cert_source_func = None

        # Figure out which api endpoint to use.
        if client_options.api_endpoint is not None:
            api_endpoint = client_options.api_endpoint
        else:
            use_mtls_env = os.getenv("GOOGLE_API_USE_MTLS_ENDPOINT", "auto")
            if use_mtls_env == "never":
                api_endpoint = self.DEFAULT_ENDPOINT
            elif use_mtls_env == "always":
                api_endpoint = self.DEFAULT_MTLS_ENDPOINT
            elif use_mtls_env == "auto":
                if is_mtls:
                    api_endpoint = self.DEFAULT_MTLS_ENDPOINT
                else:
                    api_endpoint = self.DEFAULT_ENDPOINT
            else:
                raise MutualTLSChannelError(
                    "Unsupported GOOGLE_API_USE_MTLS_ENDPOINT value. Accepted "
                    "values: never, auto, always"
                )

        # 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, DomainsTransport):
            # transport is a DomainsTransport instance.
            if credentials or client_options.credentials_file:
                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:
            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,
            )

    def search_domains(
        self,
        request: Union[domains.SearchDomainsRequest, dict] = None,
        *,
        location: str = None,
        query: str = None,
        retry: OptionalRetry = gapic_v1.method.DEFAULT,
        timeout: float = None,
        metadata: Sequence[Tuple[str, str]] = (),
    ) -> domains.SearchDomainsResponse:
        r"""Searches for available domain names similar to the provided
        query.

        Availability results from this method are approximate; call
        ``RetrieveRegisterParameters`` on a domain before registering to
        confirm availability.

        Args:
            request (Union[google.cloud.domains_v1.types.SearchDomainsRequest, dict]):
                The request object. Request for the `SearchDomains`
                method.
            location (str):
                Required. The location. Must be in the format
                ``projects/*/locations/*``.

                This corresponds to the ``location`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            query (str):
                Required. String used to search for
                available domain names.

                This corresponds to the ``query`` 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.domains_v1.types.SearchDomainsResponse:
                Response for the SearchDomains method.
        """
        # Create or coerce a protobuf request object.
        # Sanity check: If we got a request object, we should *not* have
        # gotten any keyword arguments that map to the request.
        has_flattened_params = any([location, query])
        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 domains.SearchDomainsRequest.
        # There's no risk of modifying the input as we've already verified
        # there are no flattened fields.
        if not isinstance(request, domains.SearchDomainsRequest):
            request = domains.SearchDomainsRequest(request)
            # If we have keyword arguments corresponding to fields on the
            # request, apply these.
            if location is not None:
                request.location = location
            if query is not None:
                request.query = query

        # Wrap the RPC method; this adds retry and timeout information,
        # and friendly error handling.
        rpc = self._transport._wrapped_methods[self._transport.search_domains]

        # Certain fields should be provided within the metadata header;
        # add these here.
        metadata = tuple(metadata) + (
            gapic_v1.routing_header.to_grpc_metadata((("location", request.location),)),
        )

        # Send the request.
        response = rpc(request, retry=retry, timeout=timeout, metadata=metadata,)

        # Done; return the response.
        return response

    def retrieve_register_parameters(
        self,
        request: Union[domains.RetrieveRegisterParametersRequest, dict] = None,
        *,
        location: str = None,
        domain_name: str = None,
        retry: OptionalRetry = gapic_v1.method.DEFAULT,
        timeout: float = None,
        metadata: Sequence[Tuple[str, str]] = (),
    ) -> domains.RetrieveRegisterParametersResponse:
        r"""Gets parameters needed to register a new domain name, including
        price and up-to-date availability. Use the returned values to
        call ``RegisterDomain``.

        Args:
            request (Union[google.cloud.domains_v1.types.RetrieveRegisterParametersRequest, dict]):
                The request object. Request for the
                `RetrieveRegisterParameters` method.
            location (str):
                Required. The location. Must be in the format
                ``projects/*/locations/*``.

                This corresponds to the ``location`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            domain_name (str):
                Required. The domain name. Unicode
                domain names must be expressed in
                Punycode format.

                This corresponds to the ``domain_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:
            google.cloud.domains_v1.types.RetrieveRegisterParametersResponse:
                Response for the RetrieveRegisterParameters method.
        """
        # Create or coerce a protobuf request object.
        # Sanity check: If we got a request object, we should *not* have
        # gotten any keyword arguments that map to the request.
        has_flattened_params = any([location, domain_name])
        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 domains.RetrieveRegisterParametersRequest.
        # There's no risk of modifying the input as we've already verified
        # there are no flattened fields.
        if not isinstance(request, domains.RetrieveRegisterParametersRequest):
            request = domains.RetrieveRegisterParametersRequest(request)
            # If we have keyword arguments corresponding to fields on the
            # request, apply these.
            if location is not None:
                request.location = location
            if domain_name is not None:
                request.domain_name = domain_name

        # Wrap the RPC method; this adds retry and timeout information,
        # and friendly error handling.
        rpc = self._transport._wrapped_methods[
            self._transport.retrieve_register_parameters
        ]

        # Certain fields should be provided within the metadata header;
        # add these here.
        metadata = tuple(metadata) + (
            gapic_v1.routing_header.to_grpc_metadata((("location", request.location),)),
        )

        # Send the request.
        response = rpc(request, retry=retry, timeout=timeout, metadata=metadata,)

        # Done; return the response.
        return response

    def register_domain(
        self,
        request: Union[domains.RegisterDomainRequest, dict] = None,
        *,
        parent: str = None,
        registration: domains.Registration = None,
        yearly_price: money_pb2.Money = None,
        retry: OptionalRetry = gapic_v1.method.DEFAULT,
        timeout: float = None,
        metadata: Sequence[Tuple[str, str]] = (),
    ) -> operation.Operation:
        r"""Registers a new domain name and creates a corresponding
        ``Registration`` resource.

        Call ``RetrieveRegisterParameters`` first to check availability
        of the domain name and determine parameters like price that are
        needed to build a call to this method.

        A successful call creates a ``Registration`` resource in state
        ``REGISTRATION_PENDING``, which resolves to ``ACTIVE`` within
        1-2 minutes, indicating that the domain was successfully
        registered. If the resource ends up in state
        ``REGISTRATION_FAILED``, it indicates that the domain was not
        registered successfully, and you can safely delete the resource
        and retry registration.

        Args:
            request (Union[google.cloud.domains_v1.types.RegisterDomainRequest, dict]):
                The request object. Request for the `RegisterDomain`
                method.
            parent (str):
                Required. The parent resource of the ``Registration``.
                Must be in the format ``projects/*/locations/*``.

                This corresponds to the ``parent`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            registration (google.cloud.domains_v1.types.Registration):
                Required. The complete ``Registration`` resource to be
                created.

                This corresponds to the ``registration`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            yearly_price (google.type.money_pb2.Money):
                Required. Yearly price to register or
                renew the domain. The value that should
                be put here can be obtained from
                RetrieveRegisterParameters or
                SearchDomains calls.

                This corresponds to the ``yearly_price`` 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.api_core.operation.Operation:
                An object representing a long-running operation.

                The result type for the operation will be :class:`google.cloud.domains_v1.types.Registration` The Registration resource facilitates managing and configuring domain name
                   registrations.

                   There are several ways to create a new Registration
                   resource:

                   To create a new Registration resource, find a
                   suitable domain name by calling the SearchDomains
                   method with a query to see available domain name
                   options. After choosing a name, call
                   RetrieveRegisterParameters to ensure availability and
                   obtain information like pricing, which is needed to
                   build a call to RegisterDomain.

                   Another way to create a new Registration is to
                   transfer an existing domain from another registrar.
                   First, go to the current registrar to unlock the
                   domain for transfer and retrieve the domain's
                   transfer authorization code. Then call
                   RetrieveTransferParameters to confirm that the domain
                   is unlocked and to get values needed to build a call
                   to TransferDomain.

        """
        # Create or coerce a protobuf request object.
        # Sanity check: If we got a request object, we should *not* have
        # gotten any keyword arguments that map to the request.
        has_flattened_params = any([parent, registration, yearly_price])
        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 domains.RegisterDomainRequest.
        # There's no risk of modifying the input as we've already verified
        # there are no flattened fields.
        if not isinstance(request, domains.RegisterDomainRequest):
            request = domains.RegisterDomainRequest(request)
            # If we have keyword arguments corresponding to fields on the
            # request, apply these.
            if parent is not None:
                request.parent = parent
            if registration is not None:
                request.registration = registration
            if yearly_price is not None:
                request.yearly_price = yearly_price

        # Wrap the RPC method; this adds retry and timeout information,
        # and friendly error handling.
        rpc = self._transport._wrapped_methods[self._transport.register_domain]

        # Certain fields should be provided within the metadata header;
        # add these here.
        metadata = tuple(metadata) + (
            gapic_v1.routing_header.to_grpc_metadata((("parent", request.parent),)),
        )

        # Send the request.
        response = rpc(request, retry=retry, timeout=timeout, metadata=metadata,)

        # Wrap the response in an operation future.
        response = operation.from_gapic(
            response,
            self._transport.operations_client,
            domains.Registration,
            metadata_type=domains.OperationMetadata,
        )

        # Done; return the response.
        return response

    def retrieve_transfer_parameters(
        self,
        request: Union[domains.RetrieveTransferParametersRequest, dict] = None,
        *,
        location: str = None,
        domain_name: str = None,
        retry: OptionalRetry = gapic_v1.method.DEFAULT,
        timeout: float = None,
        metadata: Sequence[Tuple[str, str]] = (),
    ) -> domains.RetrieveTransferParametersResponse:
        r"""Gets parameters needed to transfer a domain name from another
        registrar to Cloud Domains. For domains managed by Google
        Domains, transferring to Cloud Domains is not supported.

        Use the returned values to call ``TransferDomain``.

        Args:
            request (Union[google.cloud.domains_v1.types.RetrieveTransferParametersRequest, dict]):
                The request object. Request for the
                `RetrieveTransferParameters` method.
            location (str):
                Required. The location. Must be in the format
                ``projects/*/locations/*``.

                This corresponds to the ``location`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            domain_name (str):
                Required. The domain name. Unicode
                domain names must be expressed in
                Punycode format.

                This corresponds to the ``domain_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:
            google.cloud.domains_v1.types.RetrieveTransferParametersResponse:
                Response for the RetrieveTransferParameters method.
        """
        # Create or coerce a protobuf request object.
        # Sanity check: If we got a request object, we should *not* have
        # gotten any keyword arguments that map to the request.
        has_flattened_params = any([location, domain_name])
        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 domains.RetrieveTransferParametersRequest.
        # There's no risk of modifying the input as we've already verified
        # there are no flattened fields.
        if not isinstance(request, domains.RetrieveTransferParametersRequest):
            request = domains.RetrieveTransferParametersRequest(request)
            # If we have keyword arguments corresponding to fields on the
            # request, apply these.
            if location is not None:
                request.location = location
            if domain_name is not None:
                request.domain_name = domain_name

        # Wrap the RPC method; this adds retry and timeout information,
        # and friendly error handling.
        rpc = self._transport._wrapped_methods[
            self._transport.retrieve_transfer_parameters
        ]

        # Certain fields should be provided within the metadata header;
        # add these here.
        metadata = tuple(metadata) + (
            gapic_v1.routing_header.to_grpc_metadata((("location", request.location),)),
        )

        # Send the request.
        response = rpc(request, retry=retry, timeout=timeout, metadata=metadata,)

        # Done; return the response.
        return response

    def transfer_domain(
        self,
        request: Union[domains.TransferDomainRequest, dict] = None,
        *,
        parent: str = None,
        registration: domains.Registration = None,
        yearly_price: money_pb2.Money = None,
        authorization_code: domains.AuthorizationCode = None,
        retry: OptionalRetry = gapic_v1.method.DEFAULT,
        timeout: float = None,
        metadata: Sequence[Tuple[str, str]] = (),
    ) -> operation.Operation:
        r"""Transfers a domain name from another registrar to Cloud Domains.
        For domains managed by Google Domains, transferring to Cloud
        Domains is not supported.

        Before calling this method, go to the domain's current registrar
        to unlock the domain for transfer and retrieve the domain's
        transfer authorization code. Then call
        ``RetrieveTransferParameters`` to confirm that the domain is
        unlocked and to get values needed to build a call to this
        method.

        A successful call creates a ``Registration`` resource in state
        ``TRANSFER_PENDING``. It can take several days to complete the
        transfer process. The registrant can often speed up this process
        by approving the transfer through the current registrar, either
        by clicking a link in an email from the registrar or by visiting
        the registrar's website.

        A few minutes after transfer approval, the resource transitions
        to state ``ACTIVE``, indicating that the transfer was
        successful. If the transfer is rejected or the request expires
        without being approved, the resource can end up in state
        ``TRANSFER_FAILED``. If transfer fails, you can safely delete
        the resource and retry the transfer.

        Args:
            request (Union[google.cloud.domains_v1.types.TransferDomainRequest, dict]):
                The request object. Request for the `TransferDomain`
                method.
            parent (str):
                Required. The parent resource of the ``Registration``.
                Must be in the format ``projects/*/locations/*``.

                This corresponds to the ``parent`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            registration (google.cloud.domains_v1.types.Registration):
                Required. The complete ``Registration`` resource to be
                created.

                You can leave ``registration.dns_settings`` unset to
                import the domain's current DNS configuration from its
                current registrar. Use this option only if you are sure
                that the domain's current DNS service does not cease
                upon transfer, as is often the case for DNS services
                provided for free by the registrar.

                This corresponds to the ``registration`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            yearly_price (google.type.money_pb2.Money):
                Required. Acknowledgement of the price to transfer or
                renew the domain for one year. Call
                ``RetrieveTransferParameters`` to obtain the price,
                which you must acknowledge.

                This corresponds to the ``yearly_price`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            authorization_code (google.cloud.domains_v1.types.AuthorizationCode):
                The domain's transfer authorization
                code. You can obtain this from the
                domain's current registrar.

                This corresponds to the ``authorization_code`` 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.api_core.operation.Operation:
                An object representing a long-running operation.

                The result type for the operation will be :class:`google.cloud.domains_v1.types.Registration` The Registration resource facilitates managing and configuring domain name
                   registrations.

                   There are several ways to create a new Registration
                   resource:

                   To create a new Registration resource, find a
                   suitable domain name by calling the SearchDomains
                   method with a query to see available domain name
                   options. After choosing a name, call
                   RetrieveRegisterParameters to ensure availability and
                   obtain information like pricing, which is needed to
                   build a call to RegisterDomain.

                   Another way to create a new Registration is to
                   transfer an existing domain from another registrar.
                   First, go to the current registrar to unlock the
                   domain for transfer and retrieve the domain's
                   transfer authorization code. Then call
                   RetrieveTransferParameters to confirm that the domain
                   is unlocked and to get values needed to build a call
                   to TransferDomain.

        """
        # Create or coerce a protobuf request object.
        # Sanity check: If we got a request object, we should *not* have
        # gotten any keyword arguments that map to the request.
        has_flattened_params = any(
            [parent, registration, yearly_price, authorization_code]
        )
        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 domains.TransferDomainRequest.
        # There's no risk of modifying the input as we've already verified
        # there are no flattened fields.
        if not isinstance(request, domains.TransferDomainRequest):
            request = domains.TransferDomainRequest(request)
            # If we have keyword arguments corresponding to fields on the
            # request, apply these.
            if parent is not None:
                request.parent = parent
            if registration is not None:
                request.registration = registration
            if yearly_price is not None:
                request.yearly_price = yearly_price
            if authorization_code is not None:
                request.authorization_code = authorization_code

        # Wrap the RPC method; this adds retry and timeout information,
        # and friendly error handling.
        rpc = self._transport._wrapped_methods[self._transport.transfer_domain]

        # Certain fields should be provided within the metadata header;
        # add these here.
        metadata = tuple(metadata) + (
            gapic_v1.routing_header.to_grpc_metadata((("parent", request.parent),)),
        )

        # Send the request.
        response = rpc(request, retry=retry, timeout=timeout, metadata=metadata,)

        # Wrap the response in an operation future.
        response = operation.from_gapic(
            response,
            self._transport.operations_client,
            domains.Registration,
            metadata_type=domains.OperationMetadata,
        )

        # Done; return the response.
        return response

    def list_registrations(
        self,
        request: Union[domains.ListRegistrationsRequest, dict] = None,
        *,
        parent: str = None,
        retry: OptionalRetry = gapic_v1.method.DEFAULT,
        timeout: float = None,
        metadata: Sequence[Tuple[str, str]] = (),
    ) -> pagers.ListRegistrationsPager:
        r"""Lists the ``Registration`` resources in a project.

        Args:
            request (Union[google.cloud.domains_v1.types.ListRegistrationsRequest, dict]):
                The request object. Request for the `ListRegistrations`
                method.
            parent (str):
                Required. The project and location from which to list
                ``Registration``\ s, specified in the format
                ``projects/*/locations/*``.

                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:
            google.cloud.domains_v1.services.domains.pagers.ListRegistrationsPager:
                Response for the ListRegistrations method.

                Iterating over this object will yield results and
                resolve additional pages automatically.

        """
        # Create or coerce a protobuf request object.
        # Sanity check: If we got a request object, we should *not* have
        # gotten any keyword arguments that map to the request.
        has_flattened_params = any([parent])
        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 domains.ListRegistrationsRequest.
        # There's no risk of modifying the input as we've already verified
        # there are no flattened fields.
        if not isinstance(request, domains.ListRegistrationsRequest):
            request = domains.ListRegistrationsRequest(request)
            # If we have keyword arguments corresponding to fields on the
            # request, apply these.
            if parent is not None:
                request.parent = parent

        # Wrap the RPC method; this adds retry and timeout information,
        # and friendly error handling.
        rpc = self._transport._wrapped_methods[self._transport.list_registrations]

        # Certain fields should be provided within the metadata header;
        # add these here.
        metadata = tuple(metadata) + (
            gapic_v1.routing_header.to_grpc_metadata((("parent", request.parent),)),
        )

        # Send the request.
        response = rpc(request, retry=retry, timeout=timeout, metadata=metadata,)

        # This method is paged; wrap the response in a pager, which provides
        # an `__iter__` convenience method.
        response = pagers.ListRegistrationsPager(
            method=rpc, request=request, response=response, metadata=metadata,
        )

        # Done; return the response.
        return response

    def get_registration(
        self,
        request: Union[domains.GetRegistrationRequest, dict] = None,
        *,
        name: str = None,
        retry: OptionalRetry = gapic_v1.method.DEFAULT,
        timeout: float = None,
        metadata: Sequence[Tuple[str, str]] = (),
    ) -> domains.Registration:
        r"""Gets the details of a ``Registration`` resource.

        Args:
            request (Union[google.cloud.domains_v1.types.GetRegistrationRequest, dict]):
                The request object. Request for the `GetRegistration`
                method.
            name (str):
                Required. The name of the ``Registration`` to get, in
                the format ``projects/*/locations/*/registrations/*``.

                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:
            google.cloud.domains_v1.types.Registration:
                The Registration resource facilitates managing and configuring domain name
                   registrations.

                   There are several ways to create a new Registration
                   resource:

                   To create a new Registration resource, find a
                   suitable domain name by calling the SearchDomains
                   method with a query to see available domain name
                   options. After choosing a name, call
                   RetrieveRegisterParameters to ensure availability and
                   obtain information like pricing, which is needed to
                   build a call to RegisterDomain.

                   Another way to create a new Registration is to
                   transfer an existing domain from another registrar.
                   First, go to the current registrar to unlock the
                   domain for transfer and retrieve the domain's
                   transfer authorization code. Then call
                   RetrieveTransferParameters to confirm that the domain
                   is unlocked and to get values needed to build a call
                   to TransferDomain.

        """
        # Create or coerce a protobuf request object.
        # Sanity check: If we got a request object, we should *not* have
        # gotten any keyword arguments that map to the request.
        has_flattened_params = any([name])
        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 domains.GetRegistrationRequest.
        # There's no risk of modifying the input as we've already verified
        # there are no flattened fields.
        if not isinstance(request, domains.GetRegistrationRequest):
            request = domains.GetRegistrationRequest(request)
            # If we have keyword arguments corresponding to fields on the
            # request, apply these.
            if name is not None:
                request.name = name

        # Wrap the RPC method; this adds retry and timeout information,
        # and friendly error handling.
        rpc = self._transport._wrapped_methods[self._transport.get_registration]

        # Certain fields should be provided within the metadata header;
        # add these here.
        metadata = tuple(metadata) + (
            gapic_v1.routing_header.to_grpc_metadata((("name", request.name),)),
        )

        # Send the request.
        response = rpc(request, retry=retry, timeout=timeout, metadata=metadata,)

        # Done; return the response.
        return response

    def update_registration(
        self,
        request: Union[domains.UpdateRegistrationRequest, dict] = None,
        *,
        registration: domains.Registration = None,
        update_mask: field_mask_pb2.FieldMask = None,
        retry: OptionalRetry = gapic_v1.method.DEFAULT,
        timeout: float = None,
        metadata: Sequence[Tuple[str, str]] = (),
    ) -> operation.Operation:
        r"""Updates select fields of a ``Registration`` resource, notably
        ``labels``. To update other fields, use the appropriate custom
        update method:

        -  To update management settings, see
           ``ConfigureManagementSettings``
        -  To update DNS configuration, see ``ConfigureDnsSettings``
        -  To update contact information, see
           ``ConfigureContactSettings``

        Args:
            request (Union[google.cloud.domains_v1.types.UpdateRegistrationRequest, dict]):
                The request object. Request for the `UpdateRegistration`
                method.
            registration (google.cloud.domains_v1.types.Registration):
                Fields of the ``Registration`` to update.
                This corresponds to the ``registration`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            update_mask (google.protobuf.field_mask_pb2.FieldMask):
                Required. The field mask describing which fields to
                update as a comma-separated list. For example, if only
                the labels are being updated, the ``update_mask`` is
                ``"labels"``.

                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:
            google.api_core.operation.Operation:
                An object representing a long-running operation.

                The result type for the operation will be :class:`google.cloud.domains_v1.types.Registration` The Registration resource facilitates managing and configuring domain name
                   registrations.

                   There are several ways to create a new Registration
                   resource:

                   To create a new Registration resource, find a
                   suitable domain name by calling the SearchDomains
                   method with a query to see available domain name
                   options. After choosing a name, call
                   RetrieveRegisterParameters to ensure availability and
                   obtain information like pricing, which is needed to
                   build a call to RegisterDomain.

                   Another way to create a new Registration is to
                   transfer an existing domain from another registrar.
                   First, go to the current registrar to unlock the
                   domain for transfer and retrieve the domain's
                   transfer authorization code. Then call
                   RetrieveTransferParameters to confirm that the domain
                   is unlocked and to get values needed to build a call
                   to TransferDomain.

        """
        # Create or coerce a protobuf request object.
        # Sanity check: If we got a request object, we should *not* have
        # gotten any keyword arguments that map to the request.
        has_flattened_params = any([registration, update_mask])
        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 domains.UpdateRegistrationRequest.
        # There's no risk of modifying the input as we've already verified
        # there are no flattened fields.
        if not isinstance(request, domains.UpdateRegistrationRequest):
            request = domains.UpdateRegistrationRequest(request)
            # If we have keyword arguments corresponding to fields on the
            # request, apply these.
            if registration is not None:
                request.registration = registration
            if update_mask is not None:
                request.update_mask = update_mask

        # Wrap the RPC method; this adds retry and timeout information,
        # and friendly error handling.
        rpc = self._transport._wrapped_methods[self._transport.update_registration]

        # Certain fields should be provided within the metadata header;
        # add these here.
        metadata = tuple(metadata) + (
            gapic_v1.routing_header.to_grpc_metadata(
                (("registration.name", request.registration.name),)
            ),
        )

        # Send the request.
        response = rpc(request, retry=retry, timeout=timeout, metadata=metadata,)

        # Wrap the response in an operation future.
        response = operation.from_gapic(
            response,
            self._transport.operations_client,
            domains.Registration,
            metadata_type=domains.OperationMetadata,
        )

        # Done; return the response.
        return response

    def configure_management_settings(
        self,
        request: Union[domains.ConfigureManagementSettingsRequest, dict] = None,
        *,
        registration: str = None,
        management_settings: domains.ManagementSettings = None,
        update_mask: field_mask_pb2.FieldMask = None,
        retry: OptionalRetry = gapic_v1.method.DEFAULT,
        timeout: float = None,
        metadata: Sequence[Tuple[str, str]] = (),
    ) -> operation.Operation:
        r"""Updates a ``Registration``'s management settings.

        Args:
            request (Union[google.cloud.domains_v1.types.ConfigureManagementSettingsRequest, dict]):
                The request object. Request for the
                `ConfigureManagementSettings` method.
            registration (str):
                Required. The name of the ``Registration`` whose
                management settings are being updated, in the format
                ``projects/*/locations/*/registrations/*``.

                This corresponds to the ``registration`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            management_settings (google.cloud.domains_v1.types.ManagementSettings):
                Fields of the ``ManagementSettings`` to update.
                This corresponds to the ``management_settings`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            update_mask (google.protobuf.field_mask_pb2.FieldMask):
                Required. The field mask describing which fields to
                update as a comma-separated list. For example, if only
                the transfer lock is being updated, the ``update_mask``
                is ``"transfer_lock_state"``.

                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:
            google.api_core.operation.Operation:
                An object representing a long-running operation.

                The result type for the operation will be :class:`google.cloud.domains_v1.types.Registration` The Registration resource facilitates managing and configuring domain name
                   registrations.

                   There are several ways to create a new Registration
                   resource:

                   To create a new Registration resource, find a
                   suitable domain name by calling the SearchDomains
                   method with a query to see available domain name
                   options. After choosing a name, call
                   RetrieveRegisterParameters to ensure availability and
                   obtain information like pricing, which is needed to
                   build a call to RegisterDomain.

                   Another way to create a new Registration is to
                   transfer an existing domain from another registrar.
                   First, go to the current registrar to unlock the
                   domain for transfer and retrieve the domain's
                   transfer authorization code. Then call
                   RetrieveTransferParameters to confirm that the domain
                   is unlocked and to get values needed to build a call
                   to TransferDomain.

        """
        # Create or coerce a protobuf request object.
        # Sanity check: If we got a request object, we should *not* have
        # gotten any keyword arguments that map to the request.
        has_flattened_params = any([registration, management_settings, update_mask])
        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 domains.ConfigureManagementSettingsRequest.
        # There's no risk of modifying the input as we've already verified
        # there are no flattened fields.
        if not isinstance(request, domains.ConfigureManagementSettingsRequest):
            request = domains.ConfigureManagementSettingsRequest(request)
            # If we have keyword arguments corresponding to fields on the
            # request, apply these.
            if registration is not None:
                request.registration = registration
            if management_settings is not None:
                request.management_settings = management_settings
            if update_mask is not None:
                request.update_mask = update_mask

        # Wrap the RPC method; this adds retry and timeout information,
        # and friendly error handling.
        rpc = self._transport._wrapped_methods[
            self._transport.configure_management_settings
        ]

        # Certain fields should be provided within the metadata header;
        # add these here.
        metadata = tuple(metadata) + (
            gapic_v1.routing_header.to_grpc_metadata(
                (("registration", request.registration),)
            ),
        )

        # Send the request.
        response = rpc(request, retry=retry, timeout=timeout, metadata=metadata,)

        # Wrap the response in an operation future.
        response = operation.from_gapic(
            response,
            self._transport.operations_client,
            domains.Registration,
            metadata_type=domains.OperationMetadata,
        )

        # Done; return the response.
        return response

    def configure_dns_settings(
        self,
        request: Union[domains.ConfigureDnsSettingsRequest, dict] = None,
        *,
        registration: str = None,
        dns_settings: domains.DnsSettings = None,
        update_mask: field_mask_pb2.FieldMask = None,
        retry: OptionalRetry = gapic_v1.method.DEFAULT,
        timeout: float = None,
        metadata: Sequence[Tuple[str, str]] = (),
    ) -> operation.Operation:
        r"""Updates a ``Registration``'s DNS settings.

        Args:
            request (Union[google.cloud.domains_v1.types.ConfigureDnsSettingsRequest, dict]):
                The request object. Request for the
                `ConfigureDnsSettings` method.
            registration (str):
                Required. The name of the ``Registration`` whose DNS
                settings are being updated, in the format
                ``projects/*/locations/*/registrations/*``.

                This corresponds to the ``registration`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            dns_settings (google.cloud.domains_v1.types.DnsSettings):
                Fields of the ``DnsSettings`` to update.
                This corresponds to the ``dns_settings`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            update_mask (google.protobuf.field_mask_pb2.FieldMask):
                Required. The field mask describing which fields to
                update as a comma-separated list. For example, if only
                the name servers are being updated for an existing
                Custom DNS configuration, the ``update_mask`` is
                ``"custom_dns.name_servers"``.

                When changing the DNS provider from one type to another,
                pass the new provider's field name as part of the field
                mask. For example, when changing from a Google Domains
                DNS configuration to a Custom DNS configuration, the
                ``update_mask`` is ``"custom_dns"``. //

                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:
            google.api_core.operation.Operation:
                An object representing a long-running operation.

                The result type for the operation will be :class:`google.cloud.domains_v1.types.Registration` The Registration resource facilitates managing and configuring domain name
                   registrations.

                   There are several ways to create a new Registration
                   resource:

                   To create a new Registration resource, find a
                   suitable domain name by calling the SearchDomains
                   method with a query to see available domain name
                   options. After choosing a name, call
                   RetrieveRegisterParameters to ensure availability and
                   obtain information like pricing, which is needed to
                   build a call to RegisterDomain.

                   Another way to create a new Registration is to
                   transfer an existing domain from another registrar.
                   First, go to the current registrar to unlock the
                   domain for transfer and retrieve the domain's
                   transfer authorization code. Then call
                   RetrieveTransferParameters to confirm that the domain
                   is unlocked and to get values needed to build a call
                   to TransferDomain.

        """
        # Create or coerce a protobuf request object.
        # Sanity check: If we got a request object, we should *not* have
        # gotten any keyword arguments that map to the request.
        has_flattened_params = any([registration, dns_settings, update_mask])
        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 domains.ConfigureDnsSettingsRequest.
        # There's no risk of modifying the input as we've already verified
        # there are no flattened fields.
        if not isinstance(request, domains.ConfigureDnsSettingsRequest):
            request = domains.ConfigureDnsSettingsRequest(request)
            # If we have keyword arguments corresponding to fields on the
            # request, apply these.
            if registration is not None:
                request.registration = registration
            if dns_settings is not None:
                request.dns_settings = dns_settings
            if update_mask is not None:
                request.update_mask = update_mask

        # Wrap the RPC method; this adds retry and timeout information,
        # and friendly error handling.
        rpc = self._transport._wrapped_methods[self._transport.configure_dns_settings]

        # Certain fields should be provided within the metadata header;
        # add these here.
        metadata = tuple(metadata) + (
            gapic_v1.routing_header.to_grpc_metadata(
                (("registration", request.registration),)
            ),
        )

        # Send the request.
        response = rpc(request, retry=retry, timeout=timeout, metadata=metadata,)

        # Wrap the response in an operation future.
        response = operation.from_gapic(
            response,
            self._transport.operations_client,
            domains.Registration,
            metadata_type=domains.OperationMetadata,
        )

        # Done; return the response.
        return response

    def configure_contact_settings(
        self,
        request: Union[domains.ConfigureContactSettingsRequest, dict] = None,
        *,
        registration: str = None,
        contact_settings: domains.ContactSettings = None,
        update_mask: field_mask_pb2.FieldMask = None,
        retry: OptionalRetry = gapic_v1.method.DEFAULT,
        timeout: float = None,
        metadata: Sequence[Tuple[str, str]] = (),
    ) -> operation.Operation:
        r"""Updates a ``Registration``'s contact settings. Some changes
        require confirmation by the domain's registrant contact .

        Args:
            request (Union[google.cloud.domains_v1.types.ConfigureContactSettingsRequest, dict]):
                The request object. Request for the
                `ConfigureContactSettings` method.
            registration (str):
                Required. The name of the ``Registration`` whose contact
                settings are being updated, in the format
                ``projects/*/locations/*/registrations/*``.

                This corresponds to the ``registration`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            contact_settings (google.cloud.domains_v1.types.ContactSettings):
                Fields of the ``ContactSettings`` to update.
                This corresponds to the ``contact_settings`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            update_mask (google.protobuf.field_mask_pb2.FieldMask):
                Required. The field mask describing which fields to
                update as a comma-separated list. For example, if only
                the registrant contact is being updated, the
                ``update_mask`` is ``"registrant_contact"``.

                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:
            google.api_core.operation.Operation:
                An object representing a long-running operation.

                The result type for the operation will be :class:`google.cloud.domains_v1.types.Registration` The Registration resource facilitates managing and configuring domain name
                   registrations.

                   There are several ways to create a new Registration
                   resource:

                   To create a new Registration resource, find a
                   suitable domain name by calling the SearchDomains
                   method with a query to see available domain name
                   options. After choosing a name, call
                   RetrieveRegisterParameters to ensure availability and
                   obtain information like pricing, which is needed to
                   build a call to RegisterDomain.

                   Another way to create a new Registration is to
                   transfer an existing domain from another registrar.
                   First, go to the current registrar to unlock the
                   domain for transfer and retrieve the domain's
                   transfer authorization code. Then call
                   RetrieveTransferParameters to confirm that the domain
                   is unlocked and to get values needed to build a call
                   to TransferDomain.

        """
        # Create or coerce a protobuf request object.
        # Sanity check: If we got a request object, we should *not* have
        # gotten any keyword arguments that map to the request.
        has_flattened_params = any([registration, contact_settings, update_mask])
        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 domains.ConfigureContactSettingsRequest.
        # There's no risk of modifying the input as we've already verified
        # there are no flattened fields.
        if not isinstance(request, domains.ConfigureContactSettingsRequest):
            request = domains.ConfigureContactSettingsRequest(request)
            # If we have keyword arguments corresponding to fields on the
            # request, apply these.
            if registration is not None:
                request.registration = registration
            if contact_settings is not None:
                request.contact_settings = contact_settings
            if update_mask is not None:
                request.update_mask = update_mask

        # Wrap the RPC method; this adds retry and timeout information,
        # and friendly error handling.
        rpc = self._transport._wrapped_methods[
            self._transport.configure_contact_settings
        ]

        # Certain fields should be provided within the metadata header;
        # add these here.
        metadata = tuple(metadata) + (
            gapic_v1.routing_header.to_grpc_metadata(
                (("registration", request.registration),)
            ),
        )

        # Send the request.
        response = rpc(request, retry=retry, timeout=timeout, metadata=metadata,)

        # Wrap the response in an operation future.
        response = operation.from_gapic(
            response,
            self._transport.operations_client,
            domains.Registration,
            metadata_type=domains.OperationMetadata,
        )

        # Done; return the response.
        return response

    def export_registration(
        self,
        request: Union[domains.ExportRegistrationRequest, dict] = None,
        *,
        name: str = None,
        retry: OptionalRetry = gapic_v1.method.DEFAULT,
        timeout: float = None,
        metadata: Sequence[Tuple[str, str]] = (),
    ) -> operation.Operation:
        r"""Exports a ``Registration`` resource, such that it is no longer
        managed by Cloud Domains.

        When an active domain is successfully exported, you can continue
        to use the domain in `Google
        Domains <https://domains.google/>`__ until it expires. The
        calling user becomes the domain's sole owner in Google Domains,
        and permissions for the domain are subsequently managed there.
        The domain does not renew automatically unless the new owner
        sets up billing in Google Domains.

        Args:
            request (Union[google.cloud.domains_v1.types.ExportRegistrationRequest, dict]):
                The request object. Request for the `ExportRegistration`
                method.
            name (str):
                Required. The name of the ``Registration`` to export, in
                the format ``projects/*/locations/*/registrations/*``.

                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:
            google.api_core.operation.Operation:
                An object representing a long-running operation.

                The result type for the operation will be :class:`google.cloud.domains_v1.types.Registration` The Registration resource facilitates managing and configuring domain name
                   registrations.

                   There are several ways to create a new Registration
                   resource:

                   To create a new Registration resource, find a
                   suitable domain name by calling the SearchDomains
                   method with a query to see available domain name
                   options. After choosing a name, call
                   RetrieveRegisterParameters to ensure availability and
                   obtain information like pricing, which is needed to
                   build a call to RegisterDomain.

                   Another way to create a new Registration is to
                   transfer an existing domain from another registrar.
                   First, go to the current registrar to unlock the
                   domain for transfer and retrieve the domain's
                   transfer authorization code. Then call
                   RetrieveTransferParameters to confirm that the domain
                   is unlocked and to get values needed to build a call
                   to TransferDomain.

        """
        # Create or coerce a protobuf request object.
        # Sanity check: If we got a request object, we should *not* have
        # gotten any keyword arguments that map to the request.
        has_flattened_params = any([name])
        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 domains.ExportRegistrationRequest.
        # There's no risk of modifying the input as we've already verified
        # there are no flattened fields.
        if not isinstance(request, domains.ExportRegistrationRequest):
            request = domains.ExportRegistrationRequest(request)
            # If we have keyword arguments corresponding to fields on the
            # request, apply these.
            if name is not None:
                request.name = name

        # Wrap the RPC method; this adds retry and timeout information,
        # and friendly error handling.
        rpc = self._transport._wrapped_methods[self._transport.export_registration]

        # Certain fields should be provided within the metadata header;
        # add these here.
        metadata = tuple(metadata) + (
            gapic_v1.routing_header.to_grpc_metadata((("name", request.name),)),
        )

        # Send the request.
        response = rpc(request, retry=retry, timeout=timeout, metadata=metadata,)

        # Wrap the response in an operation future.
        response = operation.from_gapic(
            response,
            self._transport.operations_client,
            domains.Registration,
            metadata_type=domains.OperationMetadata,
        )

        # Done; return the response.
        return response

    def delete_registration(
        self,
        request: Union[domains.DeleteRegistrationRequest, dict] = None,
        *,
        name: str = None,
        retry: OptionalRetry = gapic_v1.method.DEFAULT,
        timeout: float = None,
        metadata: Sequence[Tuple[str, str]] = (),
    ) -> operation.Operation:
        r"""Deletes a ``Registration`` resource.

        This method works on any ``Registration`` resource using
        `Subscription or Commitment
        billing </domains/pricing#billing-models>`__, provided that the
        resource was created at least 1 day in the past.

        For ``Registration`` resources using `Monthly
        billing </domains/pricing#billing-models>`__, this method works
        if:

        -  ``state`` is ``EXPORTED`` with ``expire_time`` in the past
        -  ``state`` is ``REGISTRATION_FAILED``
        -  ``state`` is ``TRANSFER_FAILED``

        When an active registration is successfully deleted, you can
        continue to use the domain in `Google
        Domains <https://domains.google/>`__ until it expires. The
        calling user becomes the domain's sole owner in Google Domains,
        and permissions for the domain are subsequently managed there.
        The domain does not renew automatically unless the new owner
        sets up billing in Google Domains.

        Args:
            request (Union[google.cloud.domains_v1.types.DeleteRegistrationRequest, dict]):
                The request object. Request for the `DeleteRegistration`
                method.
            name (str):
                Required. The name of the ``Registration`` to delete, in
                the format ``projects/*/locations/*/registrations/*``.

                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:
            google.api_core.operation.Operation:
                An object representing a long-running operation.

                The result type for the operation will be :class:`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);

                      }

                   The JSON representation for Empty is empty JSON
                   object {}.

        """
        # Create or coerce a protobuf request object.
        # Sanity check: If we got a request object, we should *not* have
        # gotten any keyword arguments that map to the request.
        has_flattened_params = any([name])
        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 domains.DeleteRegistrationRequest.
        # There's no risk of modifying the input as we've already verified
        # there are no flattened fields.
        if not isinstance(request, domains.DeleteRegistrationRequest):
            request = domains.DeleteRegistrationRequest(request)
            # If we have keyword arguments corresponding to fields on the
            # request, apply these.
            if name is not None:
                request.name = name

        # Wrap the RPC method; this adds retry and timeout information,
        # and friendly error handling.
        rpc = self._transport._wrapped_methods[self._transport.delete_registration]

        # Certain fields should be provided within the metadata header;
        # add these here.
        metadata = tuple(metadata) + (
            gapic_v1.routing_header.to_grpc_metadata((("name", request.name),)),
        )

        # Send the request.
        response = rpc(request, retry=retry, timeout=timeout, metadata=metadata,)

        # Wrap the response in an operation future.
        response = operation.from_gapic(
            response,
            self._transport.operations_client,
            empty_pb2.Empty,
            metadata_type=domains.OperationMetadata,
        )

        # Done; return the response.
        return response

    def retrieve_authorization_code(
        self,
        request: Union[domains.RetrieveAuthorizationCodeRequest, dict] = None,
        *,
        registration: str = None,
        retry: OptionalRetry = gapic_v1.method.DEFAULT,
        timeout: float = None,
        metadata: Sequence[Tuple[str, str]] = (),
    ) -> domains.AuthorizationCode:
        r"""Gets the authorization code of the ``Registration`` for the
        purpose of transferring the domain to another registrar.

        You can call this method only after 60 days have elapsed since
        the initial domain registration.

        Args:
            request (Union[google.cloud.domains_v1.types.RetrieveAuthorizationCodeRequest, dict]):
                The request object. Request for the
                `RetrieveAuthorizationCode` method.
            registration (str):
                Required. The name of the ``Registration`` whose
                authorization code is being retrieved, in the format
                ``projects/*/locations/*/registrations/*``.

                This corresponds to the ``registration`` 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.domains_v1.types.AuthorizationCode:
                Defines an authorization code.
        """
        # Create or coerce a protobuf request object.
        # Sanity check: If we got a request object, we should *not* have
        # gotten any keyword arguments that map to the request.
        has_flattened_params = any([registration])
        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 domains.RetrieveAuthorizationCodeRequest.
        # There's no risk of modifying the input as we've already verified
        # there are no flattened fields.
        if not isinstance(request, domains.RetrieveAuthorizationCodeRequest):
            request = domains.RetrieveAuthorizationCodeRequest(request)
            # If we have keyword arguments corresponding to fields on the
            # request, apply these.
            if registration is not None:
                request.registration = registration

        # Wrap the RPC method; this adds retry and timeout information,
        # and friendly error handling.
        rpc = self._transport._wrapped_methods[
            self._transport.retrieve_authorization_code
        ]

        # Certain fields should be provided within the metadata header;
        # add these here.
        metadata = tuple(metadata) + (
            gapic_v1.routing_header.to_grpc_metadata(
                (("registration", request.registration),)
            ),
        )

        # Send the request.
        response = rpc(request, retry=retry, timeout=timeout, metadata=metadata,)

        # Done; return the response.
        return response

    def reset_authorization_code(
        self,
        request: Union[domains.ResetAuthorizationCodeRequest, dict] = None,
        *,
        registration: str = None,
        retry: OptionalRetry = gapic_v1.method.DEFAULT,
        timeout: float = None,
        metadata: Sequence[Tuple[str, str]] = (),
    ) -> domains.AuthorizationCode:
        r"""Resets the authorization code of the ``Registration`` to a new
        random string.

        You can call this method only after 60 days have elapsed since
        the initial domain registration.

        Args:
            request (Union[google.cloud.domains_v1.types.ResetAuthorizationCodeRequest, dict]):
                The request object. Request for the
                `ResetAuthorizationCode` method.
            registration (str):
                Required. The name of the ``Registration`` whose
                authorization code is being reset, in the format
                ``projects/*/locations/*/registrations/*``.

                This corresponds to the ``registration`` 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.domains_v1.types.AuthorizationCode:
                Defines an authorization code.
        """
        # Create or coerce a protobuf request object.
        # Sanity check: If we got a request object, we should *not* have
        # gotten any keyword arguments that map to the request.
        has_flattened_params = any([registration])
        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 domains.ResetAuthorizationCodeRequest.
        # There's no risk of modifying the input as we've already verified
        # there are no flattened fields.
        if not isinstance(request, domains.ResetAuthorizationCodeRequest):
            request = domains.ResetAuthorizationCodeRequest(request)
            # If we have keyword arguments corresponding to fields on the
            # request, apply these.
            if registration is not None:
                request.registration = registration

        # Wrap the RPC method; this adds retry and timeout information,
        # and friendly error handling.
        rpc = self._transport._wrapped_methods[self._transport.reset_authorization_code]

        # Certain fields should be provided within the metadata header;
        # add these here.
        metadata = tuple(metadata) + (
            gapic_v1.routing_header.to_grpc_metadata(
                (("registration", request.registration),)
            ),
        )

        # Send the request.
        response = rpc(request, retry=retry, timeout=timeout, metadata=metadata,)

        # Done; return the response.
        return response

    def __enter__(self):
        return self

    def __exit__(self, type, value, traceback):
        """Releases underlying transport's resources.

        .. warning::
            ONLY use as a context manager if the transport is NOT shared
            with other clients! Exiting the with block will CLOSE the transport
            and may cause errors in other clients!
        """
        self.transport.close()


try:
    DEFAULT_CLIENT_INFO = gapic_v1.client_info.ClientInfo(
        gapic_version=pkg_resources.get_distribution("google-cloud-domains",).version,
    )
except pkg_resources.DistributionNotFound:
    DEFAULT_CLIENT_INFO = gapic_v1.client_info.ClientInfo()


__all__ = ("DomainsClient",)
