# -*- 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 Callable, 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  # 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  # 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

from google.cloud.compute_v1.services.region_instance_group_managers import pagers
from google.cloud.compute_v1.types import compute

from .transports.base import RegionInstanceGroupManagersTransport, DEFAULT_CLIENT_INFO
from .transports.rest import RegionInstanceGroupManagersRestTransport


class RegionInstanceGroupManagersClientMeta(type):
    """Metaclass for the RegionInstanceGroupManagers 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[RegionInstanceGroupManagersTransport]]
    _transport_registry["rest"] = RegionInstanceGroupManagersRestTransport

    def get_transport_class(
        cls, label: str = None,
    ) -> Type[RegionInstanceGroupManagersTransport]:
        """Return 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 RegionInstanceGroupManagersClient(
    metaclass=RegionInstanceGroupManagersClientMeta
):
    """The RegionInstanceGroupManagers API."""

    @staticmethod
    def _get_default_mtls_endpoint(api_endpoint):
        """Convert 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 = "compute.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:
            RegionInstanceGroupManagersClient: 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:
            RegionInstanceGroupManagersClient: 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) -> RegionInstanceGroupManagersTransport:
        """Return the transport used by the client instance.

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

    @staticmethod
    def common_billing_account_path(billing_account: str,) -> str:
        """Return 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:
        """Return 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:
        """Return 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:
        """Return 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:
        """Return 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[credentials.Credentials] = None,
        transport: Union[str, RegionInstanceGroupManagersTransport, None] = None,
        client_options: Optional[client_options_lib.ClientOptions] = None,
        client_info: gapic_v1.client_info.ClientInfo = DEFAULT_CLIENT_INFO,
    ) -> None:
        """Instantiate the region instance group managers 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, RegionInstanceGroupManagersTransport]): 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()
                client_cert_source_func = (
                    mtls.default_client_cert_source() if is_mtls else 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":
                api_endpoint = (
                    self.DEFAULT_MTLS_ENDPOINT if is_mtls else 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, RegionInstanceGroupManagersTransport):
            # transport is a RegionInstanceGroupManagersTransport 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,
            )

    def abandon_instances(
        self,
        request: compute.AbandonInstancesRegionInstanceGroupManagerRequest = None,
        *,
        project: str = None,
        region: str = None,
        instance_group_manager: str = None,
        region_instance_group_managers_abandon_instances_request_resource: compute.RegionInstanceGroupManagersAbandonInstancesRequest = None,
        retry: retries.Retry = gapic_v1.method.DEFAULT,
        timeout: float = None,
        metadata: Sequence[Tuple[str, str]] = (),
    ) -> compute.Operation:
        r"""Flags the specified instances to be immediately
        removed from the managed instance group. Abandoning an
        instance does not delete the instance, but it does
        remove the instance from any target pools that are
        applied by the managed instance group. This method
        reduces the targetSize of the managed instance group by
        the number of instances that you abandon. This operation
        is marked as DONE when the action is scheduled even if
        the instances have not yet been removed from the group.
        You must separately verify the status of the abandoning
        action with the listmanagedinstances method.  If the
        group is part of a backend service that has enabled
        connection draining, it can take up to 60 seconds after
        the connection draining duration has elapsed before the
        VM instance is removed or deleted.
        You can specify a maximum of 1000 instances with this
        method per request.

        Args:
            request (google.cloud.compute_v1.types.AbandonInstancesRegionInstanceGroupManagerRequest):
                The request object. A request message for
                RegionInstanceGroupManagers.AbandonInstances. See the
                method description for details.
            project (str):
                Project ID for this request.
                This corresponds to the ``project`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            region (str):
                Name of the region scoping this
                request.

                This corresponds to the ``region`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            instance_group_manager (str):
                Name of the managed instance group.
                This corresponds to the ``instance_group_manager`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            region_instance_group_managers_abandon_instances_request_resource (google.cloud.compute_v1.types.RegionInstanceGroupManagersAbandonInstancesRequest):
                The body resource for this request
                This corresponds to the ``region_instance_group_managers_abandon_instances_request_resource`` 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.compute_v1.types.Operation:
                Represents an Operation resource.

                   Google Compute Engine has three Operation resources:

                   -  [Global](/compute/docs/reference/rest/{$api_version}/globalOperations)
                      \*
                      [Regional](/compute/docs/reference/rest/{$api_version}/regionOperations)
                      \*
                      [Zonal](/compute/docs/reference/rest/{$api_version}/zoneOperations)

                   You can use an operation resource to manage
                   asynchronous API requests. For more information, read
                   Handling API responses.

                   Operations can be global, regional or zonal. - For
                   global operations, use the globalOperations resource.
                   - For regional operations, use the regionOperations
                   resource. - For zonal operations, use the
                   zonalOperations resource.

                   For more information, read Global, Regional, and
                   Zonal Resources. (== resource_for
                   {$api_version}.globalOperations ==) (== resource_for
                   {$api_version}.regionOperations ==) (== resource_for
                   {$api_version}.zoneOperations ==)

        """
        # 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(
            [
                project,
                region,
                instance_group_manager,
                region_instance_group_managers_abandon_instances_request_resource,
            ]
        )
        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 compute.AbandonInstancesRegionInstanceGroupManagerRequest.
        # There's no risk of modifying the input as we've already verified
        # there are no flattened fields.
        if not isinstance(
            request, compute.AbandonInstancesRegionInstanceGroupManagerRequest
        ):
            request = compute.AbandonInstancesRegionInstanceGroupManagerRequest(request)

            # If we have keyword arguments corresponding to fields on the
            # request, apply these.

            if project is not None:
                request.project = project
            if region is not None:
                request.region = region
            if instance_group_manager is not None:
                request.instance_group_manager = instance_group_manager
            if (
                region_instance_group_managers_abandon_instances_request_resource
                is not None
            ):
                request.region_instance_group_managers_abandon_instances_request_resource = (
                    region_instance_group_managers_abandon_instances_request_resource
                )

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

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

        # Done; return the response.
        return response

    def apply_updates_to_instances(
        self,
        request: compute.ApplyUpdatesToInstancesRegionInstanceGroupManagerRequest = None,
        *,
        project: str = None,
        region: str = None,
        instance_group_manager: str = None,
        region_instance_group_managers_apply_updates_request_resource: compute.RegionInstanceGroupManagersApplyUpdatesRequest = None,
        retry: retries.Retry = gapic_v1.method.DEFAULT,
        timeout: float = None,
        metadata: Sequence[Tuple[str, str]] = (),
    ) -> compute.Operation:
        r"""Apply updates to selected instances the managed
        instance group.

        Args:
            request (google.cloud.compute_v1.types.ApplyUpdatesToInstancesRegionInstanceGroupManagerRequest):
                The request object. A request message for
                RegionInstanceGroupManagers.ApplyUpdatesToInstances. See
                the method description for details.
            project (str):
                Project ID for this request.
                This corresponds to the ``project`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            region (str):
                Name of the region scoping this
                request, should conform to RFC1035.

                This corresponds to the ``region`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            instance_group_manager (str):
                The name of the managed instance
                group, should conform to RFC1035.

                This corresponds to the ``instance_group_manager`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            region_instance_group_managers_apply_updates_request_resource (google.cloud.compute_v1.types.RegionInstanceGroupManagersApplyUpdatesRequest):
                The body resource for this request
                This corresponds to the ``region_instance_group_managers_apply_updates_request_resource`` 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.compute_v1.types.Operation:
                Represents an Operation resource.

                   Google Compute Engine has three Operation resources:

                   -  [Global](/compute/docs/reference/rest/{$api_version}/globalOperations)
                      \*
                      [Regional](/compute/docs/reference/rest/{$api_version}/regionOperations)
                      \*
                      [Zonal](/compute/docs/reference/rest/{$api_version}/zoneOperations)

                   You can use an operation resource to manage
                   asynchronous API requests. For more information, read
                   Handling API responses.

                   Operations can be global, regional or zonal. - For
                   global operations, use the globalOperations resource.
                   - For regional operations, use the regionOperations
                   resource. - For zonal operations, use the
                   zonalOperations resource.

                   For more information, read Global, Regional, and
                   Zonal Resources. (== resource_for
                   {$api_version}.globalOperations ==) (== resource_for
                   {$api_version}.regionOperations ==) (== resource_for
                   {$api_version}.zoneOperations ==)

        """
        # 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(
            [
                project,
                region,
                instance_group_manager,
                region_instance_group_managers_apply_updates_request_resource,
            ]
        )
        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 compute.ApplyUpdatesToInstancesRegionInstanceGroupManagerRequest.
        # There's no risk of modifying the input as we've already verified
        # there are no flattened fields.
        if not isinstance(
            request, compute.ApplyUpdatesToInstancesRegionInstanceGroupManagerRequest
        ):
            request = compute.ApplyUpdatesToInstancesRegionInstanceGroupManagerRequest(
                request
            )

            # If we have keyword arguments corresponding to fields on the
            # request, apply these.

            if project is not None:
                request.project = project
            if region is not None:
                request.region = region
            if instance_group_manager is not None:
                request.instance_group_manager = instance_group_manager
            if (
                region_instance_group_managers_apply_updates_request_resource
                is not None
            ):
                request.region_instance_group_managers_apply_updates_request_resource = (
                    region_instance_group_managers_apply_updates_request_resource
                )

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

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

        # Done; return the response.
        return response

    def create_instances(
        self,
        request: compute.CreateInstancesRegionInstanceGroupManagerRequest = None,
        *,
        project: str = None,
        region: str = None,
        instance_group_manager: str = None,
        region_instance_group_managers_create_instances_request_resource: compute.RegionInstanceGroupManagersCreateInstancesRequest = None,
        retry: retries.Retry = gapic_v1.method.DEFAULT,
        timeout: float = None,
        metadata: Sequence[Tuple[str, str]] = (),
    ) -> compute.Operation:
        r"""Creates instances with per-instance configs in this
        regional managed instance group. Instances are created
        using the current instance template. The create
        instances operation is marked DONE if the
        createInstances request is successful. The underlying
        actions take additional time. You must separately verify
        the status of the creating or actions with the
        listmanagedinstances method.

        Args:
            request (google.cloud.compute_v1.types.CreateInstancesRegionInstanceGroupManagerRequest):
                The request object. A request message for
                RegionInstanceGroupManagers.CreateInstances. See the
                method description for details.
            project (str):
                Project ID for this request.
                This corresponds to the ``project`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            region (str):
                The name of the region where the
                managed instance group is located. It
                should conform to RFC1035.

                This corresponds to the ``region`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            instance_group_manager (str):
                The name of the managed instance
                group. It should conform to RFC1035.

                This corresponds to the ``instance_group_manager`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            region_instance_group_managers_create_instances_request_resource (google.cloud.compute_v1.types.RegionInstanceGroupManagersCreateInstancesRequest):
                The body resource for this request
                This corresponds to the ``region_instance_group_managers_create_instances_request_resource`` 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.compute_v1.types.Operation:
                Represents an Operation resource.

                   Google Compute Engine has three Operation resources:

                   -  [Global](/compute/docs/reference/rest/{$api_version}/globalOperations)
                      \*
                      [Regional](/compute/docs/reference/rest/{$api_version}/regionOperations)
                      \*
                      [Zonal](/compute/docs/reference/rest/{$api_version}/zoneOperations)

                   You can use an operation resource to manage
                   asynchronous API requests. For more information, read
                   Handling API responses.

                   Operations can be global, regional or zonal. - For
                   global operations, use the globalOperations resource.
                   - For regional operations, use the regionOperations
                   resource. - For zonal operations, use the
                   zonalOperations resource.

                   For more information, read Global, Regional, and
                   Zonal Resources. (== resource_for
                   {$api_version}.globalOperations ==) (== resource_for
                   {$api_version}.regionOperations ==) (== resource_for
                   {$api_version}.zoneOperations ==)

        """
        # 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(
            [
                project,
                region,
                instance_group_manager,
                region_instance_group_managers_create_instances_request_resource,
            ]
        )
        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 compute.CreateInstancesRegionInstanceGroupManagerRequest.
        # There's no risk of modifying the input as we've already verified
        # there are no flattened fields.
        if not isinstance(
            request, compute.CreateInstancesRegionInstanceGroupManagerRequest
        ):
            request = compute.CreateInstancesRegionInstanceGroupManagerRequest(request)

            # If we have keyword arguments corresponding to fields on the
            # request, apply these.

            if project is not None:
                request.project = project
            if region is not None:
                request.region = region
            if instance_group_manager is not None:
                request.instance_group_manager = instance_group_manager
            if (
                region_instance_group_managers_create_instances_request_resource
                is not None
            ):
                request.region_instance_group_managers_create_instances_request_resource = (
                    region_instance_group_managers_create_instances_request_resource
                )

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

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

        # Done; return the response.
        return response

    def delete(
        self,
        request: compute.DeleteRegionInstanceGroupManagerRequest = None,
        *,
        project: str = None,
        region: str = None,
        instance_group_manager: str = None,
        retry: retries.Retry = gapic_v1.method.DEFAULT,
        timeout: float = None,
        metadata: Sequence[Tuple[str, str]] = (),
    ) -> compute.Operation:
        r"""Deletes the specified managed instance group and all
        of the instances in that group.

        Args:
            request (google.cloud.compute_v1.types.DeleteRegionInstanceGroupManagerRequest):
                The request object. A request message for
                RegionInstanceGroupManagers.Delete. See the method
                description for details.
            project (str):
                Project ID for this request.
                This corresponds to the ``project`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            region (str):
                Name of the region scoping this
                request.

                This corresponds to the ``region`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            instance_group_manager (str):
                Name of the managed instance group to
                delete.

                This corresponds to the ``instance_group_manager`` 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.compute_v1.types.Operation:
                Represents an Operation resource.

                   Google Compute Engine has three Operation resources:

                   -  [Global](/compute/docs/reference/rest/{$api_version}/globalOperations)
                      \*
                      [Regional](/compute/docs/reference/rest/{$api_version}/regionOperations)
                      \*
                      [Zonal](/compute/docs/reference/rest/{$api_version}/zoneOperations)

                   You can use an operation resource to manage
                   asynchronous API requests. For more information, read
                   Handling API responses.

                   Operations can be global, regional or zonal. - For
                   global operations, use the globalOperations resource.
                   - For regional operations, use the regionOperations
                   resource. - For zonal operations, use the
                   zonalOperations resource.

                   For more information, read Global, Regional, and
                   Zonal Resources. (== resource_for
                   {$api_version}.globalOperations ==) (== resource_for
                   {$api_version}.regionOperations ==) (== resource_for
                   {$api_version}.zoneOperations ==)

        """
        # 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([project, region, instance_group_manager])
        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 compute.DeleteRegionInstanceGroupManagerRequest.
        # There's no risk of modifying the input as we've already verified
        # there are no flattened fields.
        if not isinstance(request, compute.DeleteRegionInstanceGroupManagerRequest):
            request = compute.DeleteRegionInstanceGroupManagerRequest(request)

            # If we have keyword arguments corresponding to fields on the
            # request, apply these.

            if project is not None:
                request.project = project
            if region is not None:
                request.region = region
            if instance_group_manager is not None:
                request.instance_group_manager = instance_group_manager

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

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

        # Done; return the response.
        return response

    def delete_instances(
        self,
        request: compute.DeleteInstancesRegionInstanceGroupManagerRequest = None,
        *,
        project: str = None,
        region: str = None,
        instance_group_manager: str = None,
        region_instance_group_managers_delete_instances_request_resource: compute.RegionInstanceGroupManagersDeleteInstancesRequest = None,
        retry: retries.Retry = gapic_v1.method.DEFAULT,
        timeout: float = None,
        metadata: Sequence[Tuple[str, str]] = (),
    ) -> compute.Operation:
        r"""Flags the specified instances in the managed instance
        group to be immediately deleted. The instances are also
        removed from any target pools of which they were a
        member. This method reduces the targetSize of the
        managed instance group by the number of instances that
        you delete. The deleteInstances operation is marked DONE
        if the deleteInstances request is successful. The
        underlying actions take additional time. You must
        separately verify the status of the deleting action with
        the listmanagedinstances method.  If the group is part
        of a backend service that has enabled connection
        draining, it can take up to 60 seconds after the
        connection draining duration has elapsed before the VM
        instance is removed or deleted.
        You can specify a maximum of 1000 instances with this
        method per request.

        Args:
            request (google.cloud.compute_v1.types.DeleteInstancesRegionInstanceGroupManagerRequest):
                The request object. A request message for
                RegionInstanceGroupManagers.DeleteInstances. See the
                method description for details.
            project (str):
                Project ID for this request.
                This corresponds to the ``project`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            region (str):
                Name of the region scoping this
                request.

                This corresponds to the ``region`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            instance_group_manager (str):
                Name of the managed instance group.
                This corresponds to the ``instance_group_manager`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            region_instance_group_managers_delete_instances_request_resource (google.cloud.compute_v1.types.RegionInstanceGroupManagersDeleteInstancesRequest):
                The body resource for this request
                This corresponds to the ``region_instance_group_managers_delete_instances_request_resource`` 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.compute_v1.types.Operation:
                Represents an Operation resource.

                   Google Compute Engine has three Operation resources:

                   -  [Global](/compute/docs/reference/rest/{$api_version}/globalOperations)
                      \*
                      [Regional](/compute/docs/reference/rest/{$api_version}/regionOperations)
                      \*
                      [Zonal](/compute/docs/reference/rest/{$api_version}/zoneOperations)

                   You can use an operation resource to manage
                   asynchronous API requests. For more information, read
                   Handling API responses.

                   Operations can be global, regional or zonal. - For
                   global operations, use the globalOperations resource.
                   - For regional operations, use the regionOperations
                   resource. - For zonal operations, use the
                   zonalOperations resource.

                   For more information, read Global, Regional, and
                   Zonal Resources. (== resource_for
                   {$api_version}.globalOperations ==) (== resource_for
                   {$api_version}.regionOperations ==) (== resource_for
                   {$api_version}.zoneOperations ==)

        """
        # 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(
            [
                project,
                region,
                instance_group_manager,
                region_instance_group_managers_delete_instances_request_resource,
            ]
        )
        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 compute.DeleteInstancesRegionInstanceGroupManagerRequest.
        # There's no risk of modifying the input as we've already verified
        # there are no flattened fields.
        if not isinstance(
            request, compute.DeleteInstancesRegionInstanceGroupManagerRequest
        ):
            request = compute.DeleteInstancesRegionInstanceGroupManagerRequest(request)

            # If we have keyword arguments corresponding to fields on the
            # request, apply these.

            if project is not None:
                request.project = project
            if region is not None:
                request.region = region
            if instance_group_manager is not None:
                request.instance_group_manager = instance_group_manager
            if (
                region_instance_group_managers_delete_instances_request_resource
                is not None
            ):
                request.region_instance_group_managers_delete_instances_request_resource = (
                    region_instance_group_managers_delete_instances_request_resource
                )

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

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

        # Done; return the response.
        return response

    def delete_per_instance_configs(
        self,
        request: compute.DeletePerInstanceConfigsRegionInstanceGroupManagerRequest = None,
        *,
        project: str = None,
        region: str = None,
        instance_group_manager: str = None,
        region_instance_group_manager_delete_instance_config_req_resource: compute.RegionInstanceGroupManagerDeleteInstanceConfigReq = None,
        retry: retries.Retry = gapic_v1.method.DEFAULT,
        timeout: float = None,
        metadata: Sequence[Tuple[str, str]] = (),
    ) -> compute.Operation:
        r"""Deletes selected per-instance configs for the managed
        instance group.

        Args:
            request (google.cloud.compute_v1.types.DeletePerInstanceConfigsRegionInstanceGroupManagerRequest):
                The request object. A request message for
                RegionInstanceGroupManagers.DeletePerInstanceConfigs.
                See the method description for details.
            project (str):
                Project ID for this request.
                This corresponds to the ``project`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            region (str):
                Name of the region scoping this
                request, should conform to RFC1035.

                This corresponds to the ``region`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            instance_group_manager (str):
                The name of the managed instance
                group. It should conform to RFC1035.

                This corresponds to the ``instance_group_manager`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            region_instance_group_manager_delete_instance_config_req_resource (google.cloud.compute_v1.types.RegionInstanceGroupManagerDeleteInstanceConfigReq):
                The body resource for this request
                This corresponds to the ``region_instance_group_manager_delete_instance_config_req_resource`` 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.compute_v1.types.Operation:
                Represents an Operation resource.

                   Google Compute Engine has three Operation resources:

                   -  [Global](/compute/docs/reference/rest/{$api_version}/globalOperations)
                      \*
                      [Regional](/compute/docs/reference/rest/{$api_version}/regionOperations)
                      \*
                      [Zonal](/compute/docs/reference/rest/{$api_version}/zoneOperations)

                   You can use an operation resource to manage
                   asynchronous API requests. For more information, read
                   Handling API responses.

                   Operations can be global, regional or zonal. - For
                   global operations, use the globalOperations resource.
                   - For regional operations, use the regionOperations
                   resource. - For zonal operations, use the
                   zonalOperations resource.

                   For more information, read Global, Regional, and
                   Zonal Resources. (== resource_for
                   {$api_version}.globalOperations ==) (== resource_for
                   {$api_version}.regionOperations ==) (== resource_for
                   {$api_version}.zoneOperations ==)

        """
        # 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(
            [
                project,
                region,
                instance_group_manager,
                region_instance_group_manager_delete_instance_config_req_resource,
            ]
        )
        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 compute.DeletePerInstanceConfigsRegionInstanceGroupManagerRequest.
        # There's no risk of modifying the input as we've already verified
        # there are no flattened fields.
        if not isinstance(
            request, compute.DeletePerInstanceConfigsRegionInstanceGroupManagerRequest
        ):
            request = compute.DeletePerInstanceConfigsRegionInstanceGroupManagerRequest(
                request
            )

            # If we have keyword arguments corresponding to fields on the
            # request, apply these.

            if project is not None:
                request.project = project
            if region is not None:
                request.region = region
            if instance_group_manager is not None:
                request.instance_group_manager = instance_group_manager
            if (
                region_instance_group_manager_delete_instance_config_req_resource
                is not None
            ):
                request.region_instance_group_manager_delete_instance_config_req_resource = (
                    region_instance_group_manager_delete_instance_config_req_resource
                )

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

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

        # Done; return the response.
        return response

    def get(
        self,
        request: compute.GetRegionInstanceGroupManagerRequest = None,
        *,
        project: str = None,
        region: str = None,
        instance_group_manager: str = None,
        retry: retries.Retry = gapic_v1.method.DEFAULT,
        timeout: float = None,
        metadata: Sequence[Tuple[str, str]] = (),
    ) -> compute.InstanceGroupManager:
        r"""Returns all of the details about the specified
        managed instance group.

        Args:
            request (google.cloud.compute_v1.types.GetRegionInstanceGroupManagerRequest):
                The request object. A request message for
                RegionInstanceGroupManagers.Get. See the method
                description for details.
            project (str):
                Project ID for this request.
                This corresponds to the ``project`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            region (str):
                Name of the region scoping this
                request.

                This corresponds to the ``region`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            instance_group_manager (str):
                Name of the managed instance group to
                return.

                This corresponds to the ``instance_group_manager`` 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.compute_v1.types.InstanceGroupManager:
                Represents a Managed Instance Group resource.

                   An instance group is a collection of VM instances
                   that you can manage as a single entity. For more
                   information, read Instance groups.

                   For zonal Managed Instance Group, use the
                   instanceGroupManagers resource.

                   For regional Managed Instance Group, use the
                   regionInstanceGroupManagers resource. (==
                   resource_for {$api_version}.instanceGroupManagers ==)
                   (== resource_for
                   {$api_version}.regionInstanceGroupManagers ==)

        """
        # 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([project, region, instance_group_manager])
        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 compute.GetRegionInstanceGroupManagerRequest.
        # There's no risk of modifying the input as we've already verified
        # there are no flattened fields.
        if not isinstance(request, compute.GetRegionInstanceGroupManagerRequest):
            request = compute.GetRegionInstanceGroupManagerRequest(request)

            # If we have keyword arguments corresponding to fields on the
            # request, apply these.

            if project is not None:
                request.project = project
            if region is not None:
                request.region = region
            if instance_group_manager is not None:
                request.instance_group_manager = instance_group_manager

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

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

        # Done; return the response.
        return response

    def insert(
        self,
        request: compute.InsertRegionInstanceGroupManagerRequest = None,
        *,
        project: str = None,
        region: str = None,
        instance_group_manager_resource: compute.InstanceGroupManager = None,
        retry: retries.Retry = gapic_v1.method.DEFAULT,
        timeout: float = None,
        metadata: Sequence[Tuple[str, str]] = (),
    ) -> compute.Operation:
        r"""Creates a managed instance group using the
        information that you specify in the request. After the
        group is created, instances in the group are created
        using the specified instance template. This operation is
        marked as DONE when the group is created even if the
        instances in the group have not yet been created. You
        must separately verify the status of the individual
        instances with the listmanagedinstances method.  A
        regional managed instance group can contain up to 2000
        instances.

        Args:
            request (google.cloud.compute_v1.types.InsertRegionInstanceGroupManagerRequest):
                The request object. A request message for
                RegionInstanceGroupManagers.Insert. See the method
                description for details.
            project (str):
                Project ID for this request.
                This corresponds to the ``project`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            region (str):
                Name of the region scoping this
                request.

                This corresponds to the ``region`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            instance_group_manager_resource (google.cloud.compute_v1.types.InstanceGroupManager):
                The body resource for this request
                This corresponds to the ``instance_group_manager_resource`` 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.compute_v1.types.Operation:
                Represents an Operation resource.

                   Google Compute Engine has three Operation resources:

                   -  [Global](/compute/docs/reference/rest/{$api_version}/globalOperations)
                      \*
                      [Regional](/compute/docs/reference/rest/{$api_version}/regionOperations)
                      \*
                      [Zonal](/compute/docs/reference/rest/{$api_version}/zoneOperations)

                   You can use an operation resource to manage
                   asynchronous API requests. For more information, read
                   Handling API responses.

                   Operations can be global, regional or zonal. - For
                   global operations, use the globalOperations resource.
                   - For regional operations, use the regionOperations
                   resource. - For zonal operations, use the
                   zonalOperations resource.

                   For more information, read Global, Regional, and
                   Zonal Resources. (== resource_for
                   {$api_version}.globalOperations ==) (== resource_for
                   {$api_version}.regionOperations ==) (== resource_for
                   {$api_version}.zoneOperations ==)

        """
        # 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([project, region, instance_group_manager_resource])
        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 compute.InsertRegionInstanceGroupManagerRequest.
        # There's no risk of modifying the input as we've already verified
        # there are no flattened fields.
        if not isinstance(request, compute.InsertRegionInstanceGroupManagerRequest):
            request = compute.InsertRegionInstanceGroupManagerRequest(request)

            # If we have keyword arguments corresponding to fields on the
            # request, apply these.

            if project is not None:
                request.project = project
            if region is not None:
                request.region = region
            if instance_group_manager_resource is not None:
                request.instance_group_manager_resource = (
                    instance_group_manager_resource
                )

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

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

        # Done; return the response.
        return response

    def list(
        self,
        request: compute.ListRegionInstanceGroupManagersRequest = None,
        *,
        project: str = None,
        region: str = None,
        retry: retries.Retry = gapic_v1.method.DEFAULT,
        timeout: float = None,
        metadata: Sequence[Tuple[str, str]] = (),
    ) -> pagers.ListPager:
        r"""Retrieves the list of managed instance groups that
        are contained within the specified region.

        Args:
            request (google.cloud.compute_v1.types.ListRegionInstanceGroupManagersRequest):
                The request object. A request message for
                RegionInstanceGroupManagers.List. See the method
                description for details.
            project (str):
                Project ID for this request.
                This corresponds to the ``project`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            region (str):
                Name of the region scoping this
                request.

                This corresponds to the ``region`` 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.compute_v1.services.region_instance_group_managers.pagers.ListPager:
                Contains a list of managed instance
                groups.
                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([project, region])
        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 compute.ListRegionInstanceGroupManagersRequest.
        # There's no risk of modifying the input as we've already verified
        # there are no flattened fields.
        if not isinstance(request, compute.ListRegionInstanceGroupManagersRequest):
            request = compute.ListRegionInstanceGroupManagersRequest(request)

            # If we have keyword arguments corresponding to fields on the
            # request, apply these.

            if project is not None:
                request.project = project
            if region is not None:
                request.region = region

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

        # 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.ListPager(
            method=rpc, request=request, response=response, metadata=metadata,
        )

        # Done; return the response.
        return response

    def list_errors(
        self,
        request: compute.ListErrorsRegionInstanceGroupManagersRequest = None,
        *,
        project: str = None,
        region: str = None,
        instance_group_manager: str = None,
        retry: retries.Retry = gapic_v1.method.DEFAULT,
        timeout: float = None,
        metadata: Sequence[Tuple[str, str]] = (),
    ) -> pagers.ListErrorsPager:
        r"""Lists all errors thrown by actions on instances for a
        given regional managed instance group. The filter and
        orderBy query parameters are not supported.

        Args:
            request (google.cloud.compute_v1.types.ListErrorsRegionInstanceGroupManagersRequest):
                The request object. A request message for
                RegionInstanceGroupManagers.ListErrors. See the method
                description for details.
            project (str):
                Project ID for this request.
                This corresponds to the ``project`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            region (str):
                Name of the region scoping this
                request. This should conform to RFC1035.

                This corresponds to the ``region`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            instance_group_manager (str):
                The name of the managed instance group. It must be a
                string that meets the requirements in RFC1035, or an
                unsigned long integer: must match regexp pattern:
                (?:`a-z <?:[-a-z0-9]{0,61}[a-z0-9]>`__?)|[1-9][0-9]{0,19}.

                This corresponds to the ``instance_group_manager`` 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.compute_v1.services.region_instance_group_managers.pagers.ListErrorsPager:
                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([project, region, instance_group_manager])
        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 compute.ListErrorsRegionInstanceGroupManagersRequest.
        # There's no risk of modifying the input as we've already verified
        # there are no flattened fields.
        if not isinstance(
            request, compute.ListErrorsRegionInstanceGroupManagersRequest
        ):
            request = compute.ListErrorsRegionInstanceGroupManagersRequest(request)

            # If we have keyword arguments corresponding to fields on the
            # request, apply these.

            if project is not None:
                request.project = project
            if region is not None:
                request.region = region
            if instance_group_manager is not None:
                request.instance_group_manager = instance_group_manager

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

        # 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.ListErrorsPager(
            method=rpc, request=request, response=response, metadata=metadata,
        )

        # Done; return the response.
        return response

    def list_managed_instances(
        self,
        request: compute.ListManagedInstancesRegionInstanceGroupManagersRequest = None,
        *,
        project: str = None,
        region: str = None,
        instance_group_manager: str = None,
        retry: retries.Retry = gapic_v1.method.DEFAULT,
        timeout: float = None,
        metadata: Sequence[Tuple[str, str]] = (),
    ) -> pagers.ListManagedInstancesPager:
        r"""Lists the instances in the managed instance group and
        instances that are scheduled to be created. The list
        includes any current actions that the group has
        scheduled for its instances. The orderBy query parameter
        is not supported.

        Args:
            request (google.cloud.compute_v1.types.ListManagedInstancesRegionInstanceGroupManagersRequest):
                The request object. A request message for
                RegionInstanceGroupManagers.ListManagedInstances. See
                the method description for details.
            project (str):
                Project ID for this request.
                This corresponds to the ``project`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            region (str):
                Name of the region scoping this
                request.

                This corresponds to the ``region`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            instance_group_manager (str):
                The name of the managed instance
                group.

                This corresponds to the ``instance_group_manager`` 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.compute_v1.services.region_instance_group_managers.pagers.ListManagedInstancesPager:
                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([project, region, instance_group_manager])
        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 compute.ListManagedInstancesRegionInstanceGroupManagersRequest.
        # There's no risk of modifying the input as we've already verified
        # there are no flattened fields.
        if not isinstance(
            request, compute.ListManagedInstancesRegionInstanceGroupManagersRequest
        ):
            request = compute.ListManagedInstancesRegionInstanceGroupManagersRequest(
                request
            )

            # If we have keyword arguments corresponding to fields on the
            # request, apply these.

            if project is not None:
                request.project = project
            if region is not None:
                request.region = region
            if instance_group_manager is not None:
                request.instance_group_manager = instance_group_manager

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

        # 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.ListManagedInstancesPager(
            method=rpc, request=request, response=response, metadata=metadata,
        )

        # Done; return the response.
        return response

    def list_per_instance_configs(
        self,
        request: compute.ListPerInstanceConfigsRegionInstanceGroupManagersRequest = None,
        *,
        project: str = None,
        region: str = None,
        instance_group_manager: str = None,
        retry: retries.Retry = gapic_v1.method.DEFAULT,
        timeout: float = None,
        metadata: Sequence[Tuple[str, str]] = (),
    ) -> pagers.ListPerInstanceConfigsPager:
        r"""Lists all of the per-instance configs defined for the
        managed instance group. The orderBy query parameter is
        not supported.

        Args:
            request (google.cloud.compute_v1.types.ListPerInstanceConfigsRegionInstanceGroupManagersRequest):
                The request object. A request message for
                RegionInstanceGroupManagers.ListPerInstanceConfigs. See
                the method description for details.
            project (str):
                Project ID for this request.
                This corresponds to the ``project`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            region (str):
                Name of the region scoping this
                request, should conform to RFC1035.

                This corresponds to the ``region`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            instance_group_manager (str):
                The name of the managed instance
                group. It should conform to RFC1035.

                This corresponds to the ``instance_group_manager`` 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.compute_v1.services.region_instance_group_managers.pagers.ListPerInstanceConfigsPager:
                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([project, region, instance_group_manager])
        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 compute.ListPerInstanceConfigsRegionInstanceGroupManagersRequest.
        # There's no risk of modifying the input as we've already verified
        # there are no flattened fields.
        if not isinstance(
            request, compute.ListPerInstanceConfigsRegionInstanceGroupManagersRequest
        ):
            request = compute.ListPerInstanceConfigsRegionInstanceGroupManagersRequest(
                request
            )

            # If we have keyword arguments corresponding to fields on the
            # request, apply these.

            if project is not None:
                request.project = project
            if region is not None:
                request.region = region
            if instance_group_manager is not None:
                request.instance_group_manager = instance_group_manager

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

        # 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.ListPerInstanceConfigsPager(
            method=rpc, request=request, response=response, metadata=metadata,
        )

        # Done; return the response.
        return response

    def patch(
        self,
        request: compute.PatchRegionInstanceGroupManagerRequest = None,
        *,
        project: str = None,
        region: str = None,
        instance_group_manager: str = None,
        instance_group_manager_resource: compute.InstanceGroupManager = None,
        retry: retries.Retry = gapic_v1.method.DEFAULT,
        timeout: float = None,
        metadata: Sequence[Tuple[str, str]] = (),
    ) -> compute.Operation:
        r"""Updates a managed instance group using the
        information that you specify in the request. This
        operation is marked as DONE when the group is patched
        even if the instances in the group are still in the
        process of being patched. You must separately verify the
        status of the individual instances with the
        listmanagedinstances method. This method supports PATCH
        semantics and uses the JSON merge patch format and
        processing rules.

        Args:
            request (google.cloud.compute_v1.types.PatchRegionInstanceGroupManagerRequest):
                The request object. A request message for
                RegionInstanceGroupManagers.Patch. See the method
                description for details.
            project (str):
                Project ID for this request.
                This corresponds to the ``project`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            region (str):
                Name of the region scoping this
                request.

                This corresponds to the ``region`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            instance_group_manager (str):
                The name of the instance group
                manager.

                This corresponds to the ``instance_group_manager`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            instance_group_manager_resource (google.cloud.compute_v1.types.InstanceGroupManager):
                The body resource for this request
                This corresponds to the ``instance_group_manager_resource`` 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.compute_v1.types.Operation:
                Represents an Operation resource.

                   Google Compute Engine has three Operation resources:

                   -  [Global](/compute/docs/reference/rest/{$api_version}/globalOperations)
                      \*
                      [Regional](/compute/docs/reference/rest/{$api_version}/regionOperations)
                      \*
                      [Zonal](/compute/docs/reference/rest/{$api_version}/zoneOperations)

                   You can use an operation resource to manage
                   asynchronous API requests. For more information, read
                   Handling API responses.

                   Operations can be global, regional or zonal. - For
                   global operations, use the globalOperations resource.
                   - For regional operations, use the regionOperations
                   resource. - For zonal operations, use the
                   zonalOperations resource.

                   For more information, read Global, Regional, and
                   Zonal Resources. (== resource_for
                   {$api_version}.globalOperations ==) (== resource_for
                   {$api_version}.regionOperations ==) (== resource_for
                   {$api_version}.zoneOperations ==)

        """
        # 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(
            [project, region, instance_group_manager, instance_group_manager_resource]
        )
        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 compute.PatchRegionInstanceGroupManagerRequest.
        # There's no risk of modifying the input as we've already verified
        # there are no flattened fields.
        if not isinstance(request, compute.PatchRegionInstanceGroupManagerRequest):
            request = compute.PatchRegionInstanceGroupManagerRequest(request)

            # If we have keyword arguments corresponding to fields on the
            # request, apply these.

            if project is not None:
                request.project = project
            if region is not None:
                request.region = region
            if instance_group_manager is not None:
                request.instance_group_manager = instance_group_manager
            if instance_group_manager_resource is not None:
                request.instance_group_manager_resource = (
                    instance_group_manager_resource
                )

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

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

        # Done; return the response.
        return response

    def patch_per_instance_configs(
        self,
        request: compute.PatchPerInstanceConfigsRegionInstanceGroupManagerRequest = None,
        *,
        project: str = None,
        region: str = None,
        instance_group_manager: str = None,
        region_instance_group_manager_patch_instance_config_req_resource: compute.RegionInstanceGroupManagerPatchInstanceConfigReq = None,
        retry: retries.Retry = gapic_v1.method.DEFAULT,
        timeout: float = None,
        metadata: Sequence[Tuple[str, str]] = (),
    ) -> compute.Operation:
        r"""Inserts or patches per-instance configs for the
        managed instance group. perInstanceConfig.name serves as
        a key used to distinguish whether to perform insert or
        patch.

        Args:
            request (google.cloud.compute_v1.types.PatchPerInstanceConfigsRegionInstanceGroupManagerRequest):
                The request object. A request message for
                RegionInstanceGroupManagers.PatchPerInstanceConfigs. See
                the method description for details.
            project (str):
                Project ID for this request.
                This corresponds to the ``project`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            region (str):
                Name of the region scoping this
                request, should conform to RFC1035.

                This corresponds to the ``region`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            instance_group_manager (str):
                The name of the managed instance
                group. It should conform to RFC1035.

                This corresponds to the ``instance_group_manager`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            region_instance_group_manager_patch_instance_config_req_resource (google.cloud.compute_v1.types.RegionInstanceGroupManagerPatchInstanceConfigReq):
                The body resource for this request
                This corresponds to the ``region_instance_group_manager_patch_instance_config_req_resource`` 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.compute_v1.types.Operation:
                Represents an Operation resource.

                   Google Compute Engine has three Operation resources:

                   -  [Global](/compute/docs/reference/rest/{$api_version}/globalOperations)
                      \*
                      [Regional](/compute/docs/reference/rest/{$api_version}/regionOperations)
                      \*
                      [Zonal](/compute/docs/reference/rest/{$api_version}/zoneOperations)

                   You can use an operation resource to manage
                   asynchronous API requests. For more information, read
                   Handling API responses.

                   Operations can be global, regional or zonal. - For
                   global operations, use the globalOperations resource.
                   - For regional operations, use the regionOperations
                   resource. - For zonal operations, use the
                   zonalOperations resource.

                   For more information, read Global, Regional, and
                   Zonal Resources. (== resource_for
                   {$api_version}.globalOperations ==) (== resource_for
                   {$api_version}.regionOperations ==) (== resource_for
                   {$api_version}.zoneOperations ==)

        """
        # 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(
            [
                project,
                region,
                instance_group_manager,
                region_instance_group_manager_patch_instance_config_req_resource,
            ]
        )
        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 compute.PatchPerInstanceConfigsRegionInstanceGroupManagerRequest.
        # There's no risk of modifying the input as we've already verified
        # there are no flattened fields.
        if not isinstance(
            request, compute.PatchPerInstanceConfigsRegionInstanceGroupManagerRequest
        ):
            request = compute.PatchPerInstanceConfigsRegionInstanceGroupManagerRequest(
                request
            )

            # If we have keyword arguments corresponding to fields on the
            # request, apply these.

            if project is not None:
                request.project = project
            if region is not None:
                request.region = region
            if instance_group_manager is not None:
                request.instance_group_manager = instance_group_manager
            if (
                region_instance_group_manager_patch_instance_config_req_resource
                is not None
            ):
                request.region_instance_group_manager_patch_instance_config_req_resource = (
                    region_instance_group_manager_patch_instance_config_req_resource
                )

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

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

        # Done; return the response.
        return response

    def recreate_instances(
        self,
        request: compute.RecreateInstancesRegionInstanceGroupManagerRequest = None,
        *,
        project: str = None,
        region: str = None,
        instance_group_manager: str = None,
        region_instance_group_managers_recreate_request_resource: compute.RegionInstanceGroupManagersRecreateRequest = None,
        retry: retries.Retry = gapic_v1.method.DEFAULT,
        timeout: float = None,
        metadata: Sequence[Tuple[str, str]] = (),
    ) -> compute.Operation:
        r"""Flags the specified instances in the managed instance
        group to be immediately recreated. The instances are
        deleted and recreated using the current instance
        template for the managed instance group. This operation
        is marked as DONE when the flag is set even if the
        instances have not yet been recreated. You must
        separately verify the status of the recreating action
        with the listmanagedinstances method.  If the group is
        part of a backend service that has enabled connection
        draining, it can take up to 60 seconds after the
        connection draining duration has elapsed before the VM
        instance is removed or deleted.
        You can specify a maximum of 1000 instances with this
        method per request.

        Args:
            request (google.cloud.compute_v1.types.RecreateInstancesRegionInstanceGroupManagerRequest):
                The request object. A request message for
                RegionInstanceGroupManagers.RecreateInstances. See the
                method description for details.
            project (str):
                Project ID for this request.
                This corresponds to the ``project`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            region (str):
                Name of the region scoping this
                request.

                This corresponds to the ``region`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            instance_group_manager (str):
                Name of the managed instance group.
                This corresponds to the ``instance_group_manager`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            region_instance_group_managers_recreate_request_resource (google.cloud.compute_v1.types.RegionInstanceGroupManagersRecreateRequest):
                The body resource for this request
                This corresponds to the ``region_instance_group_managers_recreate_request_resource`` 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.compute_v1.types.Operation:
                Represents an Operation resource.

                   Google Compute Engine has three Operation resources:

                   -  [Global](/compute/docs/reference/rest/{$api_version}/globalOperations)
                      \*
                      [Regional](/compute/docs/reference/rest/{$api_version}/regionOperations)
                      \*
                      [Zonal](/compute/docs/reference/rest/{$api_version}/zoneOperations)

                   You can use an operation resource to manage
                   asynchronous API requests. For more information, read
                   Handling API responses.

                   Operations can be global, regional or zonal. - For
                   global operations, use the globalOperations resource.
                   - For regional operations, use the regionOperations
                   resource. - For zonal operations, use the
                   zonalOperations resource.

                   For more information, read Global, Regional, and
                   Zonal Resources. (== resource_for
                   {$api_version}.globalOperations ==) (== resource_for
                   {$api_version}.regionOperations ==) (== resource_for
                   {$api_version}.zoneOperations ==)

        """
        # 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(
            [
                project,
                region,
                instance_group_manager,
                region_instance_group_managers_recreate_request_resource,
            ]
        )
        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 compute.RecreateInstancesRegionInstanceGroupManagerRequest.
        # There's no risk of modifying the input as we've already verified
        # there are no flattened fields.
        if not isinstance(
            request, compute.RecreateInstancesRegionInstanceGroupManagerRequest
        ):
            request = compute.RecreateInstancesRegionInstanceGroupManagerRequest(
                request
            )

            # If we have keyword arguments corresponding to fields on the
            # request, apply these.

            if project is not None:
                request.project = project
            if region is not None:
                request.region = region
            if instance_group_manager is not None:
                request.instance_group_manager = instance_group_manager
            if region_instance_group_managers_recreate_request_resource is not None:
                request.region_instance_group_managers_recreate_request_resource = (
                    region_instance_group_managers_recreate_request_resource
                )

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

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

        # Done; return the response.
        return response

    def resize(
        self,
        request: compute.ResizeRegionInstanceGroupManagerRequest = None,
        *,
        project: str = None,
        region: str = None,
        instance_group_manager: str = None,
        size: int = None,
        retry: retries.Retry = gapic_v1.method.DEFAULT,
        timeout: float = None,
        metadata: Sequence[Tuple[str, str]] = (),
    ) -> compute.Operation:
        r"""Changes the intended size of the managed instance
        group. If you increase the size, the group creates new
        instances using the current instance template. If you
        decrease the size, the group deletes one or more
        instances.  The resize operation is marked DONE if the
        resize request is successful. The underlying actions
        take additional time. You must separately verify the
        status of the creating or deleting actions with the
        listmanagedinstances method.
        If the group is part of a backend service that has
        enabled connection draining, it can take up to 60
        seconds after the connection draining duration has
        elapsed before the VM instance is removed or deleted.

        Args:
            request (google.cloud.compute_v1.types.ResizeRegionInstanceGroupManagerRequest):
                The request object. A request message for
                RegionInstanceGroupManagers.Resize. See the method
                description for details.
            project (str):
                Project ID for this request.
                This corresponds to the ``project`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            region (str):
                Name of the region scoping this
                request.

                This corresponds to the ``region`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            instance_group_manager (str):
                Name of the managed instance group.
                This corresponds to the ``instance_group_manager`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            size (int):
                Number of instances that should exist
                in this instance group manager.

                This corresponds to the ``size`` 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.compute_v1.types.Operation:
                Represents an Operation resource.

                   Google Compute Engine has three Operation resources:

                   -  [Global](/compute/docs/reference/rest/{$api_version}/globalOperations)
                      \*
                      [Regional](/compute/docs/reference/rest/{$api_version}/regionOperations)
                      \*
                      [Zonal](/compute/docs/reference/rest/{$api_version}/zoneOperations)

                   You can use an operation resource to manage
                   asynchronous API requests. For more information, read
                   Handling API responses.

                   Operations can be global, regional or zonal. - For
                   global operations, use the globalOperations resource.
                   - For regional operations, use the regionOperations
                   resource. - For zonal operations, use the
                   zonalOperations resource.

                   For more information, read Global, Regional, and
                   Zonal Resources. (== resource_for
                   {$api_version}.globalOperations ==) (== resource_for
                   {$api_version}.regionOperations ==) (== resource_for
                   {$api_version}.zoneOperations ==)

        """
        # 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([project, region, instance_group_manager, size])
        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 compute.ResizeRegionInstanceGroupManagerRequest.
        # There's no risk of modifying the input as we've already verified
        # there are no flattened fields.
        if not isinstance(request, compute.ResizeRegionInstanceGroupManagerRequest):
            request = compute.ResizeRegionInstanceGroupManagerRequest(request)

            # If we have keyword arguments corresponding to fields on the
            # request, apply these.

            if project is not None:
                request.project = project
            if region is not None:
                request.region = region
            if instance_group_manager is not None:
                request.instance_group_manager = instance_group_manager
            if size is not None:
                request.size = size

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

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

        # Done; return the response.
        return response

    def set_instance_template(
        self,
        request: compute.SetInstanceTemplateRegionInstanceGroupManagerRequest = None,
        *,
        project: str = None,
        region: str = None,
        instance_group_manager: str = None,
        region_instance_group_managers_set_template_request_resource: compute.RegionInstanceGroupManagersSetTemplateRequest = None,
        retry: retries.Retry = gapic_v1.method.DEFAULT,
        timeout: float = None,
        metadata: Sequence[Tuple[str, str]] = (),
    ) -> compute.Operation:
        r"""Sets the instance template to use when creating new
        instances or recreating instances in this group.
        Existing instances are not affected.

        Args:
            request (google.cloud.compute_v1.types.SetInstanceTemplateRegionInstanceGroupManagerRequest):
                The request object. A request message for
                RegionInstanceGroupManagers.SetInstanceTemplate. See the
                method description for details.
            project (str):
                Project ID for this request.
                This corresponds to the ``project`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            region (str):
                Name of the region scoping this
                request.

                This corresponds to the ``region`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            instance_group_manager (str):
                The name of the managed instance
                group.

                This corresponds to the ``instance_group_manager`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            region_instance_group_managers_set_template_request_resource (google.cloud.compute_v1.types.RegionInstanceGroupManagersSetTemplateRequest):
                The body resource for this request
                This corresponds to the ``region_instance_group_managers_set_template_request_resource`` 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.compute_v1.types.Operation:
                Represents an Operation resource.

                   Google Compute Engine has three Operation resources:

                   -  [Global](/compute/docs/reference/rest/{$api_version}/globalOperations)
                      \*
                      [Regional](/compute/docs/reference/rest/{$api_version}/regionOperations)
                      \*
                      [Zonal](/compute/docs/reference/rest/{$api_version}/zoneOperations)

                   You can use an operation resource to manage
                   asynchronous API requests. For more information, read
                   Handling API responses.

                   Operations can be global, regional or zonal. - For
                   global operations, use the globalOperations resource.
                   - For regional operations, use the regionOperations
                   resource. - For zonal operations, use the
                   zonalOperations resource.

                   For more information, read Global, Regional, and
                   Zonal Resources. (== resource_for
                   {$api_version}.globalOperations ==) (== resource_for
                   {$api_version}.regionOperations ==) (== resource_for
                   {$api_version}.zoneOperations ==)

        """
        # 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(
            [
                project,
                region,
                instance_group_manager,
                region_instance_group_managers_set_template_request_resource,
            ]
        )
        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 compute.SetInstanceTemplateRegionInstanceGroupManagerRequest.
        # There's no risk of modifying the input as we've already verified
        # there are no flattened fields.
        if not isinstance(
            request, compute.SetInstanceTemplateRegionInstanceGroupManagerRequest
        ):
            request = compute.SetInstanceTemplateRegionInstanceGroupManagerRequest(
                request
            )

            # If we have keyword arguments corresponding to fields on the
            # request, apply these.

            if project is not None:
                request.project = project
            if region is not None:
                request.region = region
            if instance_group_manager is not None:
                request.instance_group_manager = instance_group_manager
            if region_instance_group_managers_set_template_request_resource is not None:
                request.region_instance_group_managers_set_template_request_resource = (
                    region_instance_group_managers_set_template_request_resource
                )

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

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

        # Done; return the response.
        return response

    def set_target_pools(
        self,
        request: compute.SetTargetPoolsRegionInstanceGroupManagerRequest = None,
        *,
        project: str = None,
        region: str = None,
        instance_group_manager: str = None,
        region_instance_group_managers_set_target_pools_request_resource: compute.RegionInstanceGroupManagersSetTargetPoolsRequest = None,
        retry: retries.Retry = gapic_v1.method.DEFAULT,
        timeout: float = None,
        metadata: Sequence[Tuple[str, str]] = (),
    ) -> compute.Operation:
        r"""Modifies the target pools to which all new instances
        in this group are assigned. Existing instances in the
        group are not affected.

        Args:
            request (google.cloud.compute_v1.types.SetTargetPoolsRegionInstanceGroupManagerRequest):
                The request object. A request message for
                RegionInstanceGroupManagers.SetTargetPools. See the
                method description for details.
            project (str):
                Project ID for this request.
                This corresponds to the ``project`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            region (str):
                Name of the region scoping this
                request.

                This corresponds to the ``region`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            instance_group_manager (str):
                Name of the managed instance group.
                This corresponds to the ``instance_group_manager`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            region_instance_group_managers_set_target_pools_request_resource (google.cloud.compute_v1.types.RegionInstanceGroupManagersSetTargetPoolsRequest):
                The body resource for this request
                This corresponds to the ``region_instance_group_managers_set_target_pools_request_resource`` 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.compute_v1.types.Operation:
                Represents an Operation resource.

                   Google Compute Engine has three Operation resources:

                   -  [Global](/compute/docs/reference/rest/{$api_version}/globalOperations)
                      \*
                      [Regional](/compute/docs/reference/rest/{$api_version}/regionOperations)
                      \*
                      [Zonal](/compute/docs/reference/rest/{$api_version}/zoneOperations)

                   You can use an operation resource to manage
                   asynchronous API requests. For more information, read
                   Handling API responses.

                   Operations can be global, regional or zonal. - For
                   global operations, use the globalOperations resource.
                   - For regional operations, use the regionOperations
                   resource. - For zonal operations, use the
                   zonalOperations resource.

                   For more information, read Global, Regional, and
                   Zonal Resources. (== resource_for
                   {$api_version}.globalOperations ==) (== resource_for
                   {$api_version}.regionOperations ==) (== resource_for
                   {$api_version}.zoneOperations ==)

        """
        # 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(
            [
                project,
                region,
                instance_group_manager,
                region_instance_group_managers_set_target_pools_request_resource,
            ]
        )
        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 compute.SetTargetPoolsRegionInstanceGroupManagerRequest.
        # There's no risk of modifying the input as we've already verified
        # there are no flattened fields.
        if not isinstance(
            request, compute.SetTargetPoolsRegionInstanceGroupManagerRequest
        ):
            request = compute.SetTargetPoolsRegionInstanceGroupManagerRequest(request)

            # If we have keyword arguments corresponding to fields on the
            # request, apply these.

            if project is not None:
                request.project = project
            if region is not None:
                request.region = region
            if instance_group_manager is not None:
                request.instance_group_manager = instance_group_manager
            if (
                region_instance_group_managers_set_target_pools_request_resource
                is not None
            ):
                request.region_instance_group_managers_set_target_pools_request_resource = (
                    region_instance_group_managers_set_target_pools_request_resource
                )

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

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

        # Done; return the response.
        return response

    def update_per_instance_configs(
        self,
        request: compute.UpdatePerInstanceConfigsRegionInstanceGroupManagerRequest = None,
        *,
        project: str = None,
        region: str = None,
        instance_group_manager: str = None,
        region_instance_group_manager_update_instance_config_req_resource: compute.RegionInstanceGroupManagerUpdateInstanceConfigReq = None,
        retry: retries.Retry = gapic_v1.method.DEFAULT,
        timeout: float = None,
        metadata: Sequence[Tuple[str, str]] = (),
    ) -> compute.Operation:
        r"""Inserts or updates per-instance configs for the
        managed instance group. perInstanceConfig.name serves as
        a key used to distinguish whether to perform insert or
        patch.

        Args:
            request (google.cloud.compute_v1.types.UpdatePerInstanceConfigsRegionInstanceGroupManagerRequest):
                The request object. A request message for
                RegionInstanceGroupManagers.UpdatePerInstanceConfigs.
                See the method description for details.
            project (str):
                Project ID for this request.
                This corresponds to the ``project`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            region (str):
                Name of the region scoping this
                request, should conform to RFC1035.

                This corresponds to the ``region`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            instance_group_manager (str):
                The name of the managed instance
                group. It should conform to RFC1035.

                This corresponds to the ``instance_group_manager`` field
                on the ``request`` instance; if ``request`` is provided, this
                should not be set.
            region_instance_group_manager_update_instance_config_req_resource (google.cloud.compute_v1.types.RegionInstanceGroupManagerUpdateInstanceConfigReq):
                The body resource for this request
                This corresponds to the ``region_instance_group_manager_update_instance_config_req_resource`` 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.compute_v1.types.Operation:
                Represents an Operation resource.

                   Google Compute Engine has three Operation resources:

                   -  [Global](/compute/docs/reference/rest/{$api_version}/globalOperations)
                      \*
                      [Regional](/compute/docs/reference/rest/{$api_version}/regionOperations)
                      \*
                      [Zonal](/compute/docs/reference/rest/{$api_version}/zoneOperations)

                   You can use an operation resource to manage
                   asynchronous API requests. For more information, read
                   Handling API responses.

                   Operations can be global, regional or zonal. - For
                   global operations, use the globalOperations resource.
                   - For regional operations, use the regionOperations
                   resource. - For zonal operations, use the
                   zonalOperations resource.

                   For more information, read Global, Regional, and
                   Zonal Resources. (== resource_for
                   {$api_version}.globalOperations ==) (== resource_for
                   {$api_version}.regionOperations ==) (== resource_for
                   {$api_version}.zoneOperations ==)

        """
        # 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(
            [
                project,
                region,
                instance_group_manager,
                region_instance_group_manager_update_instance_config_req_resource,
            ]
        )
        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 compute.UpdatePerInstanceConfigsRegionInstanceGroupManagerRequest.
        # There's no risk of modifying the input as we've already verified
        # there are no flattened fields.
        if not isinstance(
            request, compute.UpdatePerInstanceConfigsRegionInstanceGroupManagerRequest
        ):
            request = compute.UpdatePerInstanceConfigsRegionInstanceGroupManagerRequest(
                request
            )

            # If we have keyword arguments corresponding to fields on the
            # request, apply these.

            if project is not None:
                request.project = project
            if region is not None:
                request.region = region
            if instance_group_manager is not None:
                request.instance_group_manager = instance_group_manager
            if (
                region_instance_group_manager_update_instance_config_req_resource
                is not None
            ):
                request.region_instance_group_manager_update_instance_config_req_resource = (
                    region_instance_group_manager_update_instance_config_req_resource
                )

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

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

        # Done; return the response.
        return response


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


__all__ = ("RegionInstanceGroupManagersClient",)
