// Copyright 2023 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
//
//     https://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.

// Code generated by protoc-gen-go_gapic. DO NOT EDIT.

package gaming

import (
	"bytes"
	"context"
	"fmt"
	"io"
	"math"
	"net/http"
	"net/url"
	"time"

	gamingpb "cloud.google.com/go/gaming/apiv1beta/gamingpb"
	"cloud.google.com/go/longrunning"
	lroauto "cloud.google.com/go/longrunning/autogen"
	longrunningpb "cloud.google.com/go/longrunning/autogen/longrunningpb"
	gax "github.com/googleapis/gax-go/v2"
	"google.golang.org/api/googleapi"
	"google.golang.org/api/iterator"
	"google.golang.org/api/option"
	"google.golang.org/api/option/internaloption"
	gtransport "google.golang.org/api/transport/grpc"
	httptransport "google.golang.org/api/transport/http"
	"google.golang.org/grpc"
	"google.golang.org/grpc/codes"
	"google.golang.org/grpc/metadata"
	"google.golang.org/protobuf/encoding/protojson"
	"google.golang.org/protobuf/proto"
)

var newGameServerClustersClientHook clientHook

// GameServerClustersCallOptions contains the retry settings for each method of GameServerClustersClient.
type GameServerClustersCallOptions struct {
	ListGameServerClusters         []gax.CallOption
	GetGameServerCluster           []gax.CallOption
	CreateGameServerCluster        []gax.CallOption
	PreviewCreateGameServerCluster []gax.CallOption
	DeleteGameServerCluster        []gax.CallOption
	PreviewDeleteGameServerCluster []gax.CallOption
	UpdateGameServerCluster        []gax.CallOption
	PreviewUpdateGameServerCluster []gax.CallOption
}

func defaultGameServerClustersGRPCClientOptions() []option.ClientOption {
	return []option.ClientOption{
		internaloption.WithDefaultEndpoint("gameservices.googleapis.com:443"),
		internaloption.WithDefaultMTLSEndpoint("gameservices.mtls.googleapis.com:443"),
		internaloption.WithDefaultAudience("https://gameservices.googleapis.com/"),
		internaloption.WithDefaultScopes(DefaultAuthScopes()...),
		internaloption.EnableJwtWithScope(),
		option.WithGRPCDialOption(grpc.WithDefaultCallOptions(
			grpc.MaxCallRecvMsgSize(math.MaxInt32))),
	}
}

func defaultGameServerClustersCallOptions() *GameServerClustersCallOptions {
	return &GameServerClustersCallOptions{
		ListGameServerClusters: []gax.CallOption{
			gax.WithTimeout(60000 * time.Millisecond),
			gax.WithRetry(func() gax.Retryer {
				return gax.OnCodes([]codes.Code{
					codes.Unavailable,
				}, gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        10000 * time.Millisecond,
					Multiplier: 1.30,
				})
			}),
		},
		GetGameServerCluster: []gax.CallOption{
			gax.WithTimeout(60000 * time.Millisecond),
			gax.WithRetry(func() gax.Retryer {
				return gax.OnCodes([]codes.Code{
					codes.Unavailable,
				}, gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        10000 * time.Millisecond,
					Multiplier: 1.30,
				})
			}),
		},
		CreateGameServerCluster: []gax.CallOption{
			gax.WithTimeout(120000 * time.Millisecond),
		},
		PreviewCreateGameServerCluster: []gax.CallOption{
			gax.WithTimeout(60000 * time.Millisecond),
			gax.WithRetry(func() gax.Retryer {
				return gax.OnCodes([]codes.Code{
					codes.Unavailable,
				}, gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        10000 * time.Millisecond,
					Multiplier: 1.30,
				})
			}),
		},
		DeleteGameServerCluster: []gax.CallOption{
			gax.WithTimeout(60000 * time.Millisecond),
		},
		PreviewDeleteGameServerCluster: []gax.CallOption{
			gax.WithTimeout(60000 * time.Millisecond),
			gax.WithRetry(func() gax.Retryer {
				return gax.OnCodes([]codes.Code{
					codes.Unavailable,
				}, gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        10000 * time.Millisecond,
					Multiplier: 1.30,
				})
			}),
		},
		UpdateGameServerCluster: []gax.CallOption{
			gax.WithTimeout(60000 * time.Millisecond),
		},
		PreviewUpdateGameServerCluster: []gax.CallOption{
			gax.WithTimeout(60000 * time.Millisecond),
			gax.WithRetry(func() gax.Retryer {
				return gax.OnCodes([]codes.Code{
					codes.Unavailable,
				}, gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        10000 * time.Millisecond,
					Multiplier: 1.30,
				})
			}),
		},
	}
}

func defaultGameServerClustersRESTCallOptions() *GameServerClustersCallOptions {
	return &GameServerClustersCallOptions{
		ListGameServerClusters: []gax.CallOption{
			gax.WithTimeout(60000 * time.Millisecond),
			gax.WithRetry(func() gax.Retryer {
				return gax.OnHTTPCodes(gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        10000 * time.Millisecond,
					Multiplier: 1.30,
				},
					http.StatusServiceUnavailable)
			}),
		},
		GetGameServerCluster: []gax.CallOption{
			gax.WithTimeout(60000 * time.Millisecond),
			gax.WithRetry(func() gax.Retryer {
				return gax.OnHTTPCodes(gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        10000 * time.Millisecond,
					Multiplier: 1.30,
				},
					http.StatusServiceUnavailable)
			}),
		},
		CreateGameServerCluster: []gax.CallOption{
			gax.WithTimeout(120000 * time.Millisecond),
		},
		PreviewCreateGameServerCluster: []gax.CallOption{
			gax.WithTimeout(60000 * time.Millisecond),
			gax.WithRetry(func() gax.Retryer {
				return gax.OnHTTPCodes(gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        10000 * time.Millisecond,
					Multiplier: 1.30,
				},
					http.StatusServiceUnavailable)
			}),
		},
		DeleteGameServerCluster: []gax.CallOption{
			gax.WithTimeout(60000 * time.Millisecond),
		},
		PreviewDeleteGameServerCluster: []gax.CallOption{
			gax.WithTimeout(60000 * time.Millisecond),
			gax.WithRetry(func() gax.Retryer {
				return gax.OnHTTPCodes(gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        10000 * time.Millisecond,
					Multiplier: 1.30,
				},
					http.StatusServiceUnavailable)
			}),
		},
		UpdateGameServerCluster: []gax.CallOption{
			gax.WithTimeout(60000 * time.Millisecond),
		},
		PreviewUpdateGameServerCluster: []gax.CallOption{
			gax.WithTimeout(60000 * time.Millisecond),
			gax.WithRetry(func() gax.Retryer {
				return gax.OnHTTPCodes(gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        10000 * time.Millisecond,
					Multiplier: 1.30,
				},
					http.StatusServiceUnavailable)
			}),
		},
	}
}

// internalGameServerClustersClient is an interface that defines the methods available from Game Services API.
type internalGameServerClustersClient interface {
	Close() error
	setGoogleClientInfo(...string)
	Connection() *grpc.ClientConn
	ListGameServerClusters(context.Context, *gamingpb.ListGameServerClustersRequest, ...gax.CallOption) *GameServerClusterIterator
	GetGameServerCluster(context.Context, *gamingpb.GetGameServerClusterRequest, ...gax.CallOption) (*gamingpb.GameServerCluster, error)
	CreateGameServerCluster(context.Context, *gamingpb.CreateGameServerClusterRequest, ...gax.CallOption) (*CreateGameServerClusterOperation, error)
	CreateGameServerClusterOperation(name string) *CreateGameServerClusterOperation
	PreviewCreateGameServerCluster(context.Context, *gamingpb.PreviewCreateGameServerClusterRequest, ...gax.CallOption) (*gamingpb.PreviewCreateGameServerClusterResponse, error)
	DeleteGameServerCluster(context.Context, *gamingpb.DeleteGameServerClusterRequest, ...gax.CallOption) (*DeleteGameServerClusterOperation, error)
	DeleteGameServerClusterOperation(name string) *DeleteGameServerClusterOperation
	PreviewDeleteGameServerCluster(context.Context, *gamingpb.PreviewDeleteGameServerClusterRequest, ...gax.CallOption) (*gamingpb.PreviewDeleteGameServerClusterResponse, error)
	UpdateGameServerCluster(context.Context, *gamingpb.UpdateGameServerClusterRequest, ...gax.CallOption) (*UpdateGameServerClusterOperation, error)
	UpdateGameServerClusterOperation(name string) *UpdateGameServerClusterOperation
	PreviewUpdateGameServerCluster(context.Context, *gamingpb.PreviewUpdateGameServerClusterRequest, ...gax.CallOption) (*gamingpb.PreviewUpdateGameServerClusterResponse, error)
}

// GameServerClustersClient is a client for interacting with Game Services API.
// Methods, except Close, may be called concurrently. However, fields must not be modified concurrently with method calls.
//
// The game server cluster maps to Kubernetes clusters running Agones and is
// used to manage fleets within clusters.
type GameServerClustersClient struct {
	// The internal transport-dependent client.
	internalClient internalGameServerClustersClient

	// The call options for this service.
	CallOptions *GameServerClustersCallOptions

	// LROClient is used internally to handle long-running operations.
	// It is exposed so that its CallOptions can be modified if required.
	// Users should not Close this client.
	LROClient *lroauto.OperationsClient
}

// Wrapper methods routed to the internal client.

// Close closes the connection to the API service. The user should invoke this when
// the client is no longer required.
func (c *GameServerClustersClient) Close() error {
	return c.internalClient.Close()
}

// setGoogleClientInfo sets the name and version of the application in
// the `x-goog-api-client` header passed on each request. Intended for
// use by Google-written clients.
func (c *GameServerClustersClient) setGoogleClientInfo(keyval ...string) {
	c.internalClient.setGoogleClientInfo(keyval...)
}

// Connection returns a connection to the API service.
//
// Deprecated: Connections are now pooled so this method does not always
// return the same resource.
func (c *GameServerClustersClient) Connection() *grpc.ClientConn {
	return c.internalClient.Connection()
}

// ListGameServerClusters lists game server clusters in a given project and location.
func (c *GameServerClustersClient) ListGameServerClusters(ctx context.Context, req *gamingpb.ListGameServerClustersRequest, opts ...gax.CallOption) *GameServerClusterIterator {
	return c.internalClient.ListGameServerClusters(ctx, req, opts...)
}

// GetGameServerCluster gets details of a single game server cluster.
func (c *GameServerClustersClient) GetGameServerCluster(ctx context.Context, req *gamingpb.GetGameServerClusterRequest, opts ...gax.CallOption) (*gamingpb.GameServerCluster, error) {
	return c.internalClient.GetGameServerCluster(ctx, req, opts...)
}

// CreateGameServerCluster creates a new game server cluster in a given project and location.
func (c *GameServerClustersClient) CreateGameServerCluster(ctx context.Context, req *gamingpb.CreateGameServerClusterRequest, opts ...gax.CallOption) (*CreateGameServerClusterOperation, error) {
	return c.internalClient.CreateGameServerCluster(ctx, req, opts...)
}

// CreateGameServerClusterOperation returns a new CreateGameServerClusterOperation from a given name.
// The name must be that of a previously created CreateGameServerClusterOperation, possibly from a different process.
func (c *GameServerClustersClient) CreateGameServerClusterOperation(name string) *CreateGameServerClusterOperation {
	return c.internalClient.CreateGameServerClusterOperation(name)
}

// PreviewCreateGameServerCluster previews creation of a new game server cluster in a given project and
// location.
func (c *GameServerClustersClient) PreviewCreateGameServerCluster(ctx context.Context, req *gamingpb.PreviewCreateGameServerClusterRequest, opts ...gax.CallOption) (*gamingpb.PreviewCreateGameServerClusterResponse, error) {
	return c.internalClient.PreviewCreateGameServerCluster(ctx, req, opts...)
}

// DeleteGameServerCluster deletes a single game server cluster.
func (c *GameServerClustersClient) DeleteGameServerCluster(ctx context.Context, req *gamingpb.DeleteGameServerClusterRequest, opts ...gax.CallOption) (*DeleteGameServerClusterOperation, error) {
	return c.internalClient.DeleteGameServerCluster(ctx, req, opts...)
}

// DeleteGameServerClusterOperation returns a new DeleteGameServerClusterOperation from a given name.
// The name must be that of a previously created DeleteGameServerClusterOperation, possibly from a different process.
func (c *GameServerClustersClient) DeleteGameServerClusterOperation(name string) *DeleteGameServerClusterOperation {
	return c.internalClient.DeleteGameServerClusterOperation(name)
}

// PreviewDeleteGameServerCluster previews deletion of a single game server cluster.
func (c *GameServerClustersClient) PreviewDeleteGameServerCluster(ctx context.Context, req *gamingpb.PreviewDeleteGameServerClusterRequest, opts ...gax.CallOption) (*gamingpb.PreviewDeleteGameServerClusterResponse, error) {
	return c.internalClient.PreviewDeleteGameServerCluster(ctx, req, opts...)
}

// UpdateGameServerCluster patches a single game server cluster.
func (c *GameServerClustersClient) UpdateGameServerCluster(ctx context.Context, req *gamingpb.UpdateGameServerClusterRequest, opts ...gax.CallOption) (*UpdateGameServerClusterOperation, error) {
	return c.internalClient.UpdateGameServerCluster(ctx, req, opts...)
}

// UpdateGameServerClusterOperation returns a new UpdateGameServerClusterOperation from a given name.
// The name must be that of a previously created UpdateGameServerClusterOperation, possibly from a different process.
func (c *GameServerClustersClient) UpdateGameServerClusterOperation(name string) *UpdateGameServerClusterOperation {
	return c.internalClient.UpdateGameServerClusterOperation(name)
}

// PreviewUpdateGameServerCluster previews updating a GameServerCluster.
func (c *GameServerClustersClient) PreviewUpdateGameServerCluster(ctx context.Context, req *gamingpb.PreviewUpdateGameServerClusterRequest, opts ...gax.CallOption) (*gamingpb.PreviewUpdateGameServerClusterResponse, error) {
	return c.internalClient.PreviewUpdateGameServerCluster(ctx, req, opts...)
}

// gameServerClustersGRPCClient is a client for interacting with Game Services API over gRPC transport.
//
// Methods, except Close, may be called concurrently. However, fields must not be modified concurrently with method calls.
type gameServerClustersGRPCClient struct {
	// Connection pool of gRPC connections to the service.
	connPool gtransport.ConnPool

	// Points back to the CallOptions field of the containing GameServerClustersClient
	CallOptions **GameServerClustersCallOptions

	// The gRPC API client.
	gameServerClustersClient gamingpb.GameServerClustersServiceClient

	// LROClient is used internally to handle long-running operations.
	// It is exposed so that its CallOptions can be modified if required.
	// Users should not Close this client.
	LROClient **lroauto.OperationsClient

	// The x-goog-* metadata to be sent with each request.
	xGoogMetadata metadata.MD
}

// NewGameServerClustersClient creates a new game server clusters service client based on gRPC.
// The returned client must be Closed when it is done being used to clean up its underlying connections.
//
// The game server cluster maps to Kubernetes clusters running Agones and is
// used to manage fleets within clusters.
func NewGameServerClustersClient(ctx context.Context, opts ...option.ClientOption) (*GameServerClustersClient, error) {
	clientOpts := defaultGameServerClustersGRPCClientOptions()
	if newGameServerClustersClientHook != nil {
		hookOpts, err := newGameServerClustersClientHook(ctx, clientHookParams{})
		if err != nil {
			return nil, err
		}
		clientOpts = append(clientOpts, hookOpts...)
	}

	connPool, err := gtransport.DialPool(ctx, append(clientOpts, opts...)...)
	if err != nil {
		return nil, err
	}
	client := GameServerClustersClient{CallOptions: defaultGameServerClustersCallOptions()}

	c := &gameServerClustersGRPCClient{
		connPool:                 connPool,
		gameServerClustersClient: gamingpb.NewGameServerClustersServiceClient(connPool),
		CallOptions:              &client.CallOptions,
	}
	c.setGoogleClientInfo()

	client.internalClient = c

	client.LROClient, err = lroauto.NewOperationsClient(ctx, gtransport.WithConnPool(connPool))
	if err != nil {
		// This error "should not happen", since we are just reusing old connection pool
		// and never actually need to dial.
		// If this does happen, we could leak connp. However, we cannot close conn:
		// If the user invoked the constructor with option.WithGRPCConn,
		// we would close a connection that's still in use.
		// TODO: investigate error conditions.
		return nil, err
	}
	c.LROClient = &client.LROClient
	return &client, nil
}

// Connection returns a connection to the API service.
//
// Deprecated: Connections are now pooled so this method does not always
// return the same resource.
func (c *gameServerClustersGRPCClient) Connection() *grpc.ClientConn {
	return c.connPool.Conn()
}

// setGoogleClientInfo sets the name and version of the application in
// the `x-goog-api-client` header passed on each request. Intended for
// use by Google-written clients.
func (c *gameServerClustersGRPCClient) setGoogleClientInfo(keyval ...string) {
	kv := append([]string{"gl-go", gax.GoVersion}, keyval...)
	kv = append(kv, "gapic", getVersionClient(), "gax", gax.Version, "grpc", grpc.Version)
	c.xGoogMetadata = metadata.Pairs("x-goog-api-client", gax.XGoogHeader(kv...))
}

// Close closes the connection to the API service. The user should invoke this when
// the client is no longer required.
func (c *gameServerClustersGRPCClient) Close() error {
	return c.connPool.Close()
}

// Methods, except Close, may be called concurrently. However, fields must not be modified concurrently with method calls.
type gameServerClustersRESTClient struct {
	// The http endpoint to connect to.
	endpoint string

	// The http client.
	httpClient *http.Client

	// LROClient is used internally to handle long-running operations.
	// It is exposed so that its CallOptions can be modified if required.
	// Users should not Close this client.
	LROClient **lroauto.OperationsClient

	// The x-goog-* metadata to be sent with each request.
	xGoogMetadata metadata.MD

	// Points back to the CallOptions field of the containing GameServerClustersClient
	CallOptions **GameServerClustersCallOptions
}

// NewGameServerClustersRESTClient creates a new game server clusters service rest client.
//
// The game server cluster maps to Kubernetes clusters running Agones and is
// used to manage fleets within clusters.
func NewGameServerClustersRESTClient(ctx context.Context, opts ...option.ClientOption) (*GameServerClustersClient, error) {
	clientOpts := append(defaultGameServerClustersRESTClientOptions(), opts...)
	httpClient, endpoint, err := httptransport.NewClient(ctx, clientOpts...)
	if err != nil {
		return nil, err
	}

	callOpts := defaultGameServerClustersRESTCallOptions()
	c := &gameServerClustersRESTClient{
		endpoint:    endpoint,
		httpClient:  httpClient,
		CallOptions: &callOpts,
	}
	c.setGoogleClientInfo()

	lroOpts := []option.ClientOption{
		option.WithHTTPClient(httpClient),
		option.WithEndpoint(endpoint),
	}
	opClient, err := lroauto.NewOperationsRESTClient(ctx, lroOpts...)
	if err != nil {
		return nil, err
	}
	c.LROClient = &opClient

	return &GameServerClustersClient{internalClient: c, CallOptions: callOpts}, nil
}

func defaultGameServerClustersRESTClientOptions() []option.ClientOption {
	return []option.ClientOption{
		internaloption.WithDefaultEndpoint("https://gameservices.googleapis.com"),
		internaloption.WithDefaultMTLSEndpoint("https://gameservices.mtls.googleapis.com"),
		internaloption.WithDefaultAudience("https://gameservices.googleapis.com/"),
		internaloption.WithDefaultScopes(DefaultAuthScopes()...),
	}
}

// setGoogleClientInfo sets the name and version of the application in
// the `x-goog-api-client` header passed on each request. Intended for
// use by Google-written clients.
func (c *gameServerClustersRESTClient) setGoogleClientInfo(keyval ...string) {
	kv := append([]string{"gl-go", gax.GoVersion}, keyval...)
	kv = append(kv, "gapic", getVersionClient(), "gax", gax.Version, "rest", "UNKNOWN")
	c.xGoogMetadata = metadata.Pairs("x-goog-api-client", gax.XGoogHeader(kv...))
}

// Close closes the connection to the API service. The user should invoke this when
// the client is no longer required.
func (c *gameServerClustersRESTClient) Close() error {
	// Replace httpClient with nil to force cleanup.
	c.httpClient = nil
	return nil
}

// Connection returns a connection to the API service.
//
// Deprecated: This method always returns nil.
func (c *gameServerClustersRESTClient) Connection() *grpc.ClientConn {
	return nil
}
func (c *gameServerClustersGRPCClient) ListGameServerClusters(ctx context.Context, req *gamingpb.ListGameServerClustersRequest, opts ...gax.CallOption) *GameServerClusterIterator {
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "parent", url.QueryEscape(req.GetParent())))

	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append((*c.CallOptions).ListGameServerClusters[0:len((*c.CallOptions).ListGameServerClusters):len((*c.CallOptions).ListGameServerClusters)], opts...)
	it := &GameServerClusterIterator{}
	req = proto.Clone(req).(*gamingpb.ListGameServerClustersRequest)
	it.InternalFetch = func(pageSize int, pageToken string) ([]*gamingpb.GameServerCluster, string, error) {
		resp := &gamingpb.ListGameServerClustersResponse{}
		if pageToken != "" {
			req.PageToken = pageToken
		}
		if pageSize > math.MaxInt32 {
			req.PageSize = math.MaxInt32
		} else if pageSize != 0 {
			req.PageSize = int32(pageSize)
		}
		err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
			var err error
			resp, err = c.gameServerClustersClient.ListGameServerClusters(ctx, req, settings.GRPC...)
			return err
		}, opts...)
		if err != nil {
			return nil, "", err
		}

		it.Response = resp
		return resp.GetGameServerClusters(), resp.GetNextPageToken(), nil
	}
	fetch := func(pageSize int, pageToken string) (string, error) {
		items, nextPageToken, err := it.InternalFetch(pageSize, pageToken)
		if err != nil {
			return "", err
		}
		it.items = append(it.items, items...)
		return nextPageToken, nil
	}

	it.pageInfo, it.nextFunc = iterator.NewPageInfo(fetch, it.bufLen, it.takeBuf)
	it.pageInfo.MaxSize = int(req.GetPageSize())
	it.pageInfo.Token = req.GetPageToken()

	return it
}

func (c *gameServerClustersGRPCClient) GetGameServerCluster(ctx context.Context, req *gamingpb.GetGameServerClusterRequest, opts ...gax.CallOption) (*gamingpb.GameServerCluster, error) {
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName())))

	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append((*c.CallOptions).GetGameServerCluster[0:len((*c.CallOptions).GetGameServerCluster):len((*c.CallOptions).GetGameServerCluster)], opts...)
	var resp *gamingpb.GameServerCluster
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.gameServerClustersClient.GetGameServerCluster(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *gameServerClustersGRPCClient) CreateGameServerCluster(ctx context.Context, req *gamingpb.CreateGameServerClusterRequest, opts ...gax.CallOption) (*CreateGameServerClusterOperation, error) {
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "parent", url.QueryEscape(req.GetParent())))

	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append((*c.CallOptions).CreateGameServerCluster[0:len((*c.CallOptions).CreateGameServerCluster):len((*c.CallOptions).CreateGameServerCluster)], opts...)
	var resp *longrunningpb.Operation
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.gameServerClustersClient.CreateGameServerCluster(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return &CreateGameServerClusterOperation{
		lro: longrunning.InternalNewOperation(*c.LROClient, resp),
	}, nil
}

func (c *gameServerClustersGRPCClient) PreviewCreateGameServerCluster(ctx context.Context, req *gamingpb.PreviewCreateGameServerClusterRequest, opts ...gax.CallOption) (*gamingpb.PreviewCreateGameServerClusterResponse, error) {
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "parent", url.QueryEscape(req.GetParent())))

	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append((*c.CallOptions).PreviewCreateGameServerCluster[0:len((*c.CallOptions).PreviewCreateGameServerCluster):len((*c.CallOptions).PreviewCreateGameServerCluster)], opts...)
	var resp *gamingpb.PreviewCreateGameServerClusterResponse
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.gameServerClustersClient.PreviewCreateGameServerCluster(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *gameServerClustersGRPCClient) DeleteGameServerCluster(ctx context.Context, req *gamingpb.DeleteGameServerClusterRequest, opts ...gax.CallOption) (*DeleteGameServerClusterOperation, error) {
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName())))

	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append((*c.CallOptions).DeleteGameServerCluster[0:len((*c.CallOptions).DeleteGameServerCluster):len((*c.CallOptions).DeleteGameServerCluster)], opts...)
	var resp *longrunningpb.Operation
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.gameServerClustersClient.DeleteGameServerCluster(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return &DeleteGameServerClusterOperation{
		lro: longrunning.InternalNewOperation(*c.LROClient, resp),
	}, nil
}

func (c *gameServerClustersGRPCClient) PreviewDeleteGameServerCluster(ctx context.Context, req *gamingpb.PreviewDeleteGameServerClusterRequest, opts ...gax.CallOption) (*gamingpb.PreviewDeleteGameServerClusterResponse, error) {
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName())))

	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append((*c.CallOptions).PreviewDeleteGameServerCluster[0:len((*c.CallOptions).PreviewDeleteGameServerCluster):len((*c.CallOptions).PreviewDeleteGameServerCluster)], opts...)
	var resp *gamingpb.PreviewDeleteGameServerClusterResponse
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.gameServerClustersClient.PreviewDeleteGameServerCluster(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *gameServerClustersGRPCClient) UpdateGameServerCluster(ctx context.Context, req *gamingpb.UpdateGameServerClusterRequest, opts ...gax.CallOption) (*UpdateGameServerClusterOperation, error) {
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "game_server_cluster.name", url.QueryEscape(req.GetGameServerCluster().GetName())))

	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append((*c.CallOptions).UpdateGameServerCluster[0:len((*c.CallOptions).UpdateGameServerCluster):len((*c.CallOptions).UpdateGameServerCluster)], opts...)
	var resp *longrunningpb.Operation
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.gameServerClustersClient.UpdateGameServerCluster(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return &UpdateGameServerClusterOperation{
		lro: longrunning.InternalNewOperation(*c.LROClient, resp),
	}, nil
}

func (c *gameServerClustersGRPCClient) PreviewUpdateGameServerCluster(ctx context.Context, req *gamingpb.PreviewUpdateGameServerClusterRequest, opts ...gax.CallOption) (*gamingpb.PreviewUpdateGameServerClusterResponse, error) {
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "game_server_cluster.name", url.QueryEscape(req.GetGameServerCluster().GetName())))

	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append((*c.CallOptions).PreviewUpdateGameServerCluster[0:len((*c.CallOptions).PreviewUpdateGameServerCluster):len((*c.CallOptions).PreviewUpdateGameServerCluster)], opts...)
	var resp *gamingpb.PreviewUpdateGameServerClusterResponse
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.gameServerClustersClient.PreviewUpdateGameServerCluster(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

// ListGameServerClusters lists game server clusters in a given project and location.
func (c *gameServerClustersRESTClient) ListGameServerClusters(ctx context.Context, req *gamingpb.ListGameServerClustersRequest, opts ...gax.CallOption) *GameServerClusterIterator {
	it := &GameServerClusterIterator{}
	req = proto.Clone(req).(*gamingpb.ListGameServerClustersRequest)
	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	it.InternalFetch = func(pageSize int, pageToken string) ([]*gamingpb.GameServerCluster, string, error) {
		resp := &gamingpb.ListGameServerClustersResponse{}
		if pageToken != "" {
			req.PageToken = pageToken
		}
		if pageSize > math.MaxInt32 {
			req.PageSize = math.MaxInt32
		} else if pageSize != 0 {
			req.PageSize = int32(pageSize)
		}
		baseUrl, err := url.Parse(c.endpoint)
		if err != nil {
			return nil, "", err
		}
		baseUrl.Path += fmt.Sprintf("/v1beta/%v/gameServerClusters", req.GetParent())

		params := url.Values{}
		params.Add("$alt", "json;enum-encoding=int")
		if req.GetFilter() != "" {
			params.Add("filter", fmt.Sprintf("%v", req.GetFilter()))
		}
		if req.GetOrderBy() != "" {
			params.Add("orderBy", fmt.Sprintf("%v", req.GetOrderBy()))
		}
		if req.GetPageSize() != 0 {
			params.Add("pageSize", fmt.Sprintf("%v", req.GetPageSize()))
		}
		if req.GetPageToken() != "" {
			params.Add("pageToken", fmt.Sprintf("%v", req.GetPageToken()))
		}

		baseUrl.RawQuery = params.Encode()

		// Build HTTP headers from client and context metadata.
		headers := buildHeaders(ctx, c.xGoogMetadata, metadata.Pairs("Content-Type", "application/json"))
		e := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
			if settings.Path != "" {
				baseUrl.Path = settings.Path
			}
			httpReq, err := http.NewRequest("GET", baseUrl.String(), nil)
			if err != nil {
				return err
			}
			httpReq.Header = headers

			httpRsp, err := c.httpClient.Do(httpReq)
			if err != nil {
				return err
			}
			defer httpRsp.Body.Close()

			if err = googleapi.CheckResponse(httpRsp); err != nil {
				return err
			}

			buf, err := io.ReadAll(httpRsp.Body)
			if err != nil {
				return err
			}

			if err := unm.Unmarshal(buf, resp); err != nil {
				return err
			}

			return nil
		}, opts...)
		if e != nil {
			return nil, "", e
		}
		it.Response = resp
		return resp.GetGameServerClusters(), resp.GetNextPageToken(), nil
	}

	fetch := func(pageSize int, pageToken string) (string, error) {
		items, nextPageToken, err := it.InternalFetch(pageSize, pageToken)
		if err != nil {
			return "", err
		}
		it.items = append(it.items, items...)
		return nextPageToken, nil
	}

	it.pageInfo, it.nextFunc = iterator.NewPageInfo(fetch, it.bufLen, it.takeBuf)
	it.pageInfo.MaxSize = int(req.GetPageSize())
	it.pageInfo.Token = req.GetPageToken()

	return it
}

// GetGameServerCluster gets details of a single game server cluster.
func (c *gameServerClustersRESTClient) GetGameServerCluster(ctx context.Context, req *gamingpb.GetGameServerClusterRequest, opts ...gax.CallOption) (*gamingpb.GameServerCluster, error) {
	baseUrl, err := url.Parse(c.endpoint)
	if err != nil {
		return nil, err
	}
	baseUrl.Path += fmt.Sprintf("/v1beta/%v", req.GetName())

	params := url.Values{}
	params.Add("$alt", "json;enum-encoding=int")

	baseUrl.RawQuery = params.Encode()

	// Build HTTP headers from client and context metadata.
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName())))

	headers := buildHeaders(ctx, c.xGoogMetadata, md, metadata.Pairs("Content-Type", "application/json"))
	opts = append((*c.CallOptions).GetGameServerCluster[0:len((*c.CallOptions).GetGameServerCluster):len((*c.CallOptions).GetGameServerCluster)], opts...)
	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	resp := &gamingpb.GameServerCluster{}
	e := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		if settings.Path != "" {
			baseUrl.Path = settings.Path
		}
		httpReq, err := http.NewRequest("GET", baseUrl.String(), nil)
		if err != nil {
			return err
		}
		httpReq = httpReq.WithContext(ctx)
		httpReq.Header = headers

		httpRsp, err := c.httpClient.Do(httpReq)
		if err != nil {
			return err
		}
		defer httpRsp.Body.Close()

		if err = googleapi.CheckResponse(httpRsp); err != nil {
			return err
		}

		buf, err := io.ReadAll(httpRsp.Body)
		if err != nil {
			return err
		}

		if err := unm.Unmarshal(buf, resp); err != nil {
			return err
		}

		return nil
	}, opts...)
	if e != nil {
		return nil, e
	}
	return resp, nil
}

// CreateGameServerCluster creates a new game server cluster in a given project and location.
func (c *gameServerClustersRESTClient) CreateGameServerCluster(ctx context.Context, req *gamingpb.CreateGameServerClusterRequest, opts ...gax.CallOption) (*CreateGameServerClusterOperation, error) {
	m := protojson.MarshalOptions{AllowPartial: true, UseEnumNumbers: true}
	body := req.GetGameServerCluster()
	jsonReq, err := m.Marshal(body)
	if err != nil {
		return nil, err
	}

	baseUrl, err := url.Parse(c.endpoint)
	if err != nil {
		return nil, err
	}
	baseUrl.Path += fmt.Sprintf("/v1beta/%v/gameServerClusters", req.GetParent())

	params := url.Values{}
	params.Add("$alt", "json;enum-encoding=int")
	params.Add("gameServerClusterId", fmt.Sprintf("%v", req.GetGameServerClusterId()))

	baseUrl.RawQuery = params.Encode()

	// Build HTTP headers from client and context metadata.
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "parent", url.QueryEscape(req.GetParent())))

	headers := buildHeaders(ctx, c.xGoogMetadata, md, metadata.Pairs("Content-Type", "application/json"))
	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	resp := &longrunningpb.Operation{}
	e := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		if settings.Path != "" {
			baseUrl.Path = settings.Path
		}
		httpReq, err := http.NewRequest("POST", baseUrl.String(), bytes.NewReader(jsonReq))
		if err != nil {
			return err
		}
		httpReq = httpReq.WithContext(ctx)
		httpReq.Header = headers

		httpRsp, err := c.httpClient.Do(httpReq)
		if err != nil {
			return err
		}
		defer httpRsp.Body.Close()

		if err = googleapi.CheckResponse(httpRsp); err != nil {
			return err
		}

		buf, err := io.ReadAll(httpRsp.Body)
		if err != nil {
			return err
		}

		if err := unm.Unmarshal(buf, resp); err != nil {
			return err
		}

		return nil
	}, opts...)
	if e != nil {
		return nil, e
	}

	override := fmt.Sprintf("/v1beta/%s", resp.GetName())
	return &CreateGameServerClusterOperation{
		lro:      longrunning.InternalNewOperation(*c.LROClient, resp),
		pollPath: override,
	}, nil
}

// PreviewCreateGameServerCluster previews creation of a new game server cluster in a given project and
// location.
func (c *gameServerClustersRESTClient) PreviewCreateGameServerCluster(ctx context.Context, req *gamingpb.PreviewCreateGameServerClusterRequest, opts ...gax.CallOption) (*gamingpb.PreviewCreateGameServerClusterResponse, error) {
	m := protojson.MarshalOptions{AllowPartial: true, UseEnumNumbers: true}
	body := req.GetGameServerCluster()
	jsonReq, err := m.Marshal(body)
	if err != nil {
		return nil, err
	}

	baseUrl, err := url.Parse(c.endpoint)
	if err != nil {
		return nil, err
	}
	baseUrl.Path += fmt.Sprintf("/v1beta/%v/gameServerClusters:previewCreate", req.GetParent())

	params := url.Values{}
	params.Add("$alt", "json;enum-encoding=int")
	params.Add("gameServerClusterId", fmt.Sprintf("%v", req.GetGameServerClusterId()))
	if req.GetPreviewTime() != nil {
		previewTime, err := protojson.Marshal(req.GetPreviewTime())
		if err != nil {
			return nil, err
		}
		params.Add("previewTime", string(previewTime[1:len(previewTime)-1]))
	}

	baseUrl.RawQuery = params.Encode()

	// Build HTTP headers from client and context metadata.
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "parent", url.QueryEscape(req.GetParent())))

	headers := buildHeaders(ctx, c.xGoogMetadata, md, metadata.Pairs("Content-Type", "application/json"))
	opts = append((*c.CallOptions).PreviewCreateGameServerCluster[0:len((*c.CallOptions).PreviewCreateGameServerCluster):len((*c.CallOptions).PreviewCreateGameServerCluster)], opts...)
	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	resp := &gamingpb.PreviewCreateGameServerClusterResponse{}
	e := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		if settings.Path != "" {
			baseUrl.Path = settings.Path
		}
		httpReq, err := http.NewRequest("POST", baseUrl.String(), bytes.NewReader(jsonReq))
		if err != nil {
			return err
		}
		httpReq = httpReq.WithContext(ctx)
		httpReq.Header = headers

		httpRsp, err := c.httpClient.Do(httpReq)
		if err != nil {
			return err
		}
		defer httpRsp.Body.Close()

		if err = googleapi.CheckResponse(httpRsp); err != nil {
			return err
		}

		buf, err := io.ReadAll(httpRsp.Body)
		if err != nil {
			return err
		}

		if err := unm.Unmarshal(buf, resp); err != nil {
			return err
		}

		return nil
	}, opts...)
	if e != nil {
		return nil, e
	}
	return resp, nil
}

// DeleteGameServerCluster deletes a single game server cluster.
func (c *gameServerClustersRESTClient) DeleteGameServerCluster(ctx context.Context, req *gamingpb.DeleteGameServerClusterRequest, opts ...gax.CallOption) (*DeleteGameServerClusterOperation, error) {
	baseUrl, err := url.Parse(c.endpoint)
	if err != nil {
		return nil, err
	}
	baseUrl.Path += fmt.Sprintf("/v1beta/%v", req.GetName())

	params := url.Values{}
	params.Add("$alt", "json;enum-encoding=int")

	baseUrl.RawQuery = params.Encode()

	// Build HTTP headers from client and context metadata.
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName())))

	headers := buildHeaders(ctx, c.xGoogMetadata, md, metadata.Pairs("Content-Type", "application/json"))
	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	resp := &longrunningpb.Operation{}
	e := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		if settings.Path != "" {
			baseUrl.Path = settings.Path
		}
		httpReq, err := http.NewRequest("DELETE", baseUrl.String(), nil)
		if err != nil {
			return err
		}
		httpReq = httpReq.WithContext(ctx)
		httpReq.Header = headers

		httpRsp, err := c.httpClient.Do(httpReq)
		if err != nil {
			return err
		}
		defer httpRsp.Body.Close()

		if err = googleapi.CheckResponse(httpRsp); err != nil {
			return err
		}

		buf, err := io.ReadAll(httpRsp.Body)
		if err != nil {
			return err
		}

		if err := unm.Unmarshal(buf, resp); err != nil {
			return err
		}

		return nil
	}, opts...)
	if e != nil {
		return nil, e
	}

	override := fmt.Sprintf("/v1beta/%s", resp.GetName())
	return &DeleteGameServerClusterOperation{
		lro:      longrunning.InternalNewOperation(*c.LROClient, resp),
		pollPath: override,
	}, nil
}

// PreviewDeleteGameServerCluster previews deletion of a single game server cluster.
func (c *gameServerClustersRESTClient) PreviewDeleteGameServerCluster(ctx context.Context, req *gamingpb.PreviewDeleteGameServerClusterRequest, opts ...gax.CallOption) (*gamingpb.PreviewDeleteGameServerClusterResponse, error) {
	baseUrl, err := url.Parse(c.endpoint)
	if err != nil {
		return nil, err
	}
	baseUrl.Path += fmt.Sprintf("/v1beta/%v:previewDelete", req.GetName())

	params := url.Values{}
	params.Add("$alt", "json;enum-encoding=int")
	if req.GetPreviewTime() != nil {
		previewTime, err := protojson.Marshal(req.GetPreviewTime())
		if err != nil {
			return nil, err
		}
		params.Add("previewTime", string(previewTime[1:len(previewTime)-1]))
	}

	baseUrl.RawQuery = params.Encode()

	// Build HTTP headers from client and context metadata.
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName())))

	headers := buildHeaders(ctx, c.xGoogMetadata, md, metadata.Pairs("Content-Type", "application/json"))
	opts = append((*c.CallOptions).PreviewDeleteGameServerCluster[0:len((*c.CallOptions).PreviewDeleteGameServerCluster):len((*c.CallOptions).PreviewDeleteGameServerCluster)], opts...)
	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	resp := &gamingpb.PreviewDeleteGameServerClusterResponse{}
	e := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		if settings.Path != "" {
			baseUrl.Path = settings.Path
		}
		httpReq, err := http.NewRequest("DELETE", baseUrl.String(), nil)
		if err != nil {
			return err
		}
		httpReq = httpReq.WithContext(ctx)
		httpReq.Header = headers

		httpRsp, err := c.httpClient.Do(httpReq)
		if err != nil {
			return err
		}
		defer httpRsp.Body.Close()

		if err = googleapi.CheckResponse(httpRsp); err != nil {
			return err
		}

		buf, err := io.ReadAll(httpRsp.Body)
		if err != nil {
			return err
		}

		if err := unm.Unmarshal(buf, resp); err != nil {
			return err
		}

		return nil
	}, opts...)
	if e != nil {
		return nil, e
	}
	return resp, nil
}

// UpdateGameServerCluster patches a single game server cluster.
func (c *gameServerClustersRESTClient) UpdateGameServerCluster(ctx context.Context, req *gamingpb.UpdateGameServerClusterRequest, opts ...gax.CallOption) (*UpdateGameServerClusterOperation, error) {
	m := protojson.MarshalOptions{AllowPartial: true, UseEnumNumbers: true}
	body := req.GetGameServerCluster()
	jsonReq, err := m.Marshal(body)
	if err != nil {
		return nil, err
	}

	baseUrl, err := url.Parse(c.endpoint)
	if err != nil {
		return nil, err
	}
	baseUrl.Path += fmt.Sprintf("/v1beta/%v", req.GetGameServerCluster().GetName())

	params := url.Values{}
	params.Add("$alt", "json;enum-encoding=int")
	if req.GetUpdateMask() != nil {
		updateMask, err := protojson.Marshal(req.GetUpdateMask())
		if err != nil {
			return nil, err
		}
		params.Add("updateMask", string(updateMask[1:len(updateMask)-1]))
	}

	baseUrl.RawQuery = params.Encode()

	// Build HTTP headers from client and context metadata.
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "game_server_cluster.name", url.QueryEscape(req.GetGameServerCluster().GetName())))

	headers := buildHeaders(ctx, c.xGoogMetadata, md, metadata.Pairs("Content-Type", "application/json"))
	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	resp := &longrunningpb.Operation{}
	e := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		if settings.Path != "" {
			baseUrl.Path = settings.Path
		}
		httpReq, err := http.NewRequest("PATCH", baseUrl.String(), bytes.NewReader(jsonReq))
		if err != nil {
			return err
		}
		httpReq = httpReq.WithContext(ctx)
		httpReq.Header = headers

		httpRsp, err := c.httpClient.Do(httpReq)
		if err != nil {
			return err
		}
		defer httpRsp.Body.Close()

		if err = googleapi.CheckResponse(httpRsp); err != nil {
			return err
		}

		buf, err := io.ReadAll(httpRsp.Body)
		if err != nil {
			return err
		}

		if err := unm.Unmarshal(buf, resp); err != nil {
			return err
		}

		return nil
	}, opts...)
	if e != nil {
		return nil, e
	}

	override := fmt.Sprintf("/v1beta/%s", resp.GetName())
	return &UpdateGameServerClusterOperation{
		lro:      longrunning.InternalNewOperation(*c.LROClient, resp),
		pollPath: override,
	}, nil
}

// PreviewUpdateGameServerCluster previews updating a GameServerCluster.
func (c *gameServerClustersRESTClient) PreviewUpdateGameServerCluster(ctx context.Context, req *gamingpb.PreviewUpdateGameServerClusterRequest, opts ...gax.CallOption) (*gamingpb.PreviewUpdateGameServerClusterResponse, error) {
	m := protojson.MarshalOptions{AllowPartial: true, UseEnumNumbers: true}
	body := req.GetGameServerCluster()
	jsonReq, err := m.Marshal(body)
	if err != nil {
		return nil, err
	}

	baseUrl, err := url.Parse(c.endpoint)
	if err != nil {
		return nil, err
	}
	baseUrl.Path += fmt.Sprintf("/v1beta/%v:previewUpdate", req.GetGameServerCluster().GetName())

	params := url.Values{}
	params.Add("$alt", "json;enum-encoding=int")
	if req.GetPreviewTime() != nil {
		previewTime, err := protojson.Marshal(req.GetPreviewTime())
		if err != nil {
			return nil, err
		}
		params.Add("previewTime", string(previewTime[1:len(previewTime)-1]))
	}
	if req.GetUpdateMask() != nil {
		updateMask, err := protojson.Marshal(req.GetUpdateMask())
		if err != nil {
			return nil, err
		}
		params.Add("updateMask", string(updateMask[1:len(updateMask)-1]))
	}

	baseUrl.RawQuery = params.Encode()

	// Build HTTP headers from client and context metadata.
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "game_server_cluster.name", url.QueryEscape(req.GetGameServerCluster().GetName())))

	headers := buildHeaders(ctx, c.xGoogMetadata, md, metadata.Pairs("Content-Type", "application/json"))
	opts = append((*c.CallOptions).PreviewUpdateGameServerCluster[0:len((*c.CallOptions).PreviewUpdateGameServerCluster):len((*c.CallOptions).PreviewUpdateGameServerCluster)], opts...)
	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	resp := &gamingpb.PreviewUpdateGameServerClusterResponse{}
	e := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		if settings.Path != "" {
			baseUrl.Path = settings.Path
		}
		httpReq, err := http.NewRequest("PATCH", baseUrl.String(), bytes.NewReader(jsonReq))
		if err != nil {
			return err
		}
		httpReq = httpReq.WithContext(ctx)
		httpReq.Header = headers

		httpRsp, err := c.httpClient.Do(httpReq)
		if err != nil {
			return err
		}
		defer httpRsp.Body.Close()

		if err = googleapi.CheckResponse(httpRsp); err != nil {
			return err
		}

		buf, err := io.ReadAll(httpRsp.Body)
		if err != nil {
			return err
		}

		if err := unm.Unmarshal(buf, resp); err != nil {
			return err
		}

		return nil
	}, opts...)
	if e != nil {
		return nil, e
	}
	return resp, nil
}

// CreateGameServerClusterOperation manages a long-running operation from CreateGameServerCluster.
type CreateGameServerClusterOperation struct {
	lro      *longrunning.Operation
	pollPath string
}

// CreateGameServerClusterOperation returns a new CreateGameServerClusterOperation from a given name.
// The name must be that of a previously created CreateGameServerClusterOperation, possibly from a different process.
func (c *gameServerClustersGRPCClient) CreateGameServerClusterOperation(name string) *CreateGameServerClusterOperation {
	return &CreateGameServerClusterOperation{
		lro: longrunning.InternalNewOperation(*c.LROClient, &longrunningpb.Operation{Name: name}),
	}
}

// CreateGameServerClusterOperation returns a new CreateGameServerClusterOperation from a given name.
// The name must be that of a previously created CreateGameServerClusterOperation, possibly from a different process.
func (c *gameServerClustersRESTClient) CreateGameServerClusterOperation(name string) *CreateGameServerClusterOperation {
	override := fmt.Sprintf("/v1beta/%s", name)
	return &CreateGameServerClusterOperation{
		lro:      longrunning.InternalNewOperation(*c.LROClient, &longrunningpb.Operation{Name: name}),
		pollPath: override,
	}
}

// Wait blocks until the long-running operation is completed, returning the response and any errors encountered.
//
// See documentation of Poll for error-handling information.
func (op *CreateGameServerClusterOperation) Wait(ctx context.Context, opts ...gax.CallOption) (*gamingpb.GameServerCluster, error) {
	opts = append([]gax.CallOption{gax.WithPath(op.pollPath)}, opts...)
	var resp gamingpb.GameServerCluster
	if err := op.lro.WaitWithInterval(ctx, &resp, time.Minute, opts...); err != nil {
		return nil, err
	}
	return &resp, nil
}

// Poll fetches the latest state of the long-running operation.
//
// Poll also fetches the latest metadata, which can be retrieved by Metadata.
//
// If Poll fails, the error is returned and op is unmodified. If Poll succeeds and
// the operation has completed with failure, the error is returned and op.Done will return true.
// If Poll succeeds and the operation has completed successfully,
// op.Done will return true, and the response of the operation is returned.
// If Poll succeeds and the operation has not completed, the returned response and error are both nil.
func (op *CreateGameServerClusterOperation) Poll(ctx context.Context, opts ...gax.CallOption) (*gamingpb.GameServerCluster, error) {
	opts = append([]gax.CallOption{gax.WithPath(op.pollPath)}, opts...)
	var resp gamingpb.GameServerCluster
	if err := op.lro.Poll(ctx, &resp, opts...); err != nil {
		return nil, err
	}
	if !op.Done() {
		return nil, nil
	}
	return &resp, nil
}

// Metadata returns metadata associated with the long-running operation.
// Metadata itself does not contact the server, but Poll does.
// To get the latest metadata, call this method after a successful call to Poll.
// If the metadata is not available, the returned metadata and error are both nil.
func (op *CreateGameServerClusterOperation) Metadata() (*gamingpb.OperationMetadata, error) {
	var meta gamingpb.OperationMetadata
	if err := op.lro.Metadata(&meta); err == longrunning.ErrNoMetadata {
		return nil, nil
	} else if err != nil {
		return nil, err
	}
	return &meta, nil
}

// Done reports whether the long-running operation has completed.
func (op *CreateGameServerClusterOperation) Done() bool {
	return op.lro.Done()
}

// Name returns the name of the long-running operation.
// The name is assigned by the server and is unique within the service from which the operation is created.
func (op *CreateGameServerClusterOperation) Name() string {
	return op.lro.Name()
}

// DeleteGameServerClusterOperation manages a long-running operation from DeleteGameServerCluster.
type DeleteGameServerClusterOperation struct {
	lro      *longrunning.Operation
	pollPath string
}

// DeleteGameServerClusterOperation returns a new DeleteGameServerClusterOperation from a given name.
// The name must be that of a previously created DeleteGameServerClusterOperation, possibly from a different process.
func (c *gameServerClustersGRPCClient) DeleteGameServerClusterOperation(name string) *DeleteGameServerClusterOperation {
	return &DeleteGameServerClusterOperation{
		lro: longrunning.InternalNewOperation(*c.LROClient, &longrunningpb.Operation{Name: name}),
	}
}

// DeleteGameServerClusterOperation returns a new DeleteGameServerClusterOperation from a given name.
// The name must be that of a previously created DeleteGameServerClusterOperation, possibly from a different process.
func (c *gameServerClustersRESTClient) DeleteGameServerClusterOperation(name string) *DeleteGameServerClusterOperation {
	override := fmt.Sprintf("/v1beta/%s", name)
	return &DeleteGameServerClusterOperation{
		lro:      longrunning.InternalNewOperation(*c.LROClient, &longrunningpb.Operation{Name: name}),
		pollPath: override,
	}
}

// Wait blocks until the long-running operation is completed, returning the response and any errors encountered.
//
// See documentation of Poll for error-handling information.
func (op *DeleteGameServerClusterOperation) Wait(ctx context.Context, opts ...gax.CallOption) error {
	opts = append([]gax.CallOption{gax.WithPath(op.pollPath)}, opts...)
	return op.lro.WaitWithInterval(ctx, nil, time.Minute, opts...)
}

// Poll fetches the latest state of the long-running operation.
//
// Poll also fetches the latest metadata, which can be retrieved by Metadata.
//
// If Poll fails, the error is returned and op is unmodified. If Poll succeeds and
// the operation has completed with failure, the error is returned and op.Done will return true.
// If Poll succeeds and the operation has completed successfully,
// op.Done will return true, and the response of the operation is returned.
// If Poll succeeds and the operation has not completed, the returned response and error are both nil.
func (op *DeleteGameServerClusterOperation) Poll(ctx context.Context, opts ...gax.CallOption) error {
	opts = append([]gax.CallOption{gax.WithPath(op.pollPath)}, opts...)
	return op.lro.Poll(ctx, nil, opts...)
}

// Metadata returns metadata associated with the long-running operation.
// Metadata itself does not contact the server, but Poll does.
// To get the latest metadata, call this method after a successful call to Poll.
// If the metadata is not available, the returned metadata and error are both nil.
func (op *DeleteGameServerClusterOperation) Metadata() (*gamingpb.OperationMetadata, error) {
	var meta gamingpb.OperationMetadata
	if err := op.lro.Metadata(&meta); err == longrunning.ErrNoMetadata {
		return nil, nil
	} else if err != nil {
		return nil, err
	}
	return &meta, nil
}

// Done reports whether the long-running operation has completed.
func (op *DeleteGameServerClusterOperation) Done() bool {
	return op.lro.Done()
}

// Name returns the name of the long-running operation.
// The name is assigned by the server and is unique within the service from which the operation is created.
func (op *DeleteGameServerClusterOperation) Name() string {
	return op.lro.Name()
}

// UpdateGameServerClusterOperation manages a long-running operation from UpdateGameServerCluster.
type UpdateGameServerClusterOperation struct {
	lro      *longrunning.Operation
	pollPath string
}

// UpdateGameServerClusterOperation returns a new UpdateGameServerClusterOperation from a given name.
// The name must be that of a previously created UpdateGameServerClusterOperation, possibly from a different process.
func (c *gameServerClustersGRPCClient) UpdateGameServerClusterOperation(name string) *UpdateGameServerClusterOperation {
	return &UpdateGameServerClusterOperation{
		lro: longrunning.InternalNewOperation(*c.LROClient, &longrunningpb.Operation{Name: name}),
	}
}

// UpdateGameServerClusterOperation returns a new UpdateGameServerClusterOperation from a given name.
// The name must be that of a previously created UpdateGameServerClusterOperation, possibly from a different process.
func (c *gameServerClustersRESTClient) UpdateGameServerClusterOperation(name string) *UpdateGameServerClusterOperation {
	override := fmt.Sprintf("/v1beta/%s", name)
	return &UpdateGameServerClusterOperation{
		lro:      longrunning.InternalNewOperation(*c.LROClient, &longrunningpb.Operation{Name: name}),
		pollPath: override,
	}
}

// Wait blocks until the long-running operation is completed, returning the response and any errors encountered.
//
// See documentation of Poll for error-handling information.
func (op *UpdateGameServerClusterOperation) Wait(ctx context.Context, opts ...gax.CallOption) (*gamingpb.GameServerCluster, error) {
	opts = append([]gax.CallOption{gax.WithPath(op.pollPath)}, opts...)
	var resp gamingpb.GameServerCluster
	if err := op.lro.WaitWithInterval(ctx, &resp, time.Minute, opts...); err != nil {
		return nil, err
	}
	return &resp, nil
}

// Poll fetches the latest state of the long-running operation.
//
// Poll also fetches the latest metadata, which can be retrieved by Metadata.
//
// If Poll fails, the error is returned and op is unmodified. If Poll succeeds and
// the operation has completed with failure, the error is returned and op.Done will return true.
// If Poll succeeds and the operation has completed successfully,
// op.Done will return true, and the response of the operation is returned.
// If Poll succeeds and the operation has not completed, the returned response and error are both nil.
func (op *UpdateGameServerClusterOperation) Poll(ctx context.Context, opts ...gax.CallOption) (*gamingpb.GameServerCluster, error) {
	opts = append([]gax.CallOption{gax.WithPath(op.pollPath)}, opts...)
	var resp gamingpb.GameServerCluster
	if err := op.lro.Poll(ctx, &resp, opts...); err != nil {
		return nil, err
	}
	if !op.Done() {
		return nil, nil
	}
	return &resp, nil
}

// Metadata returns metadata associated with the long-running operation.
// Metadata itself does not contact the server, but Poll does.
// To get the latest metadata, call this method after a successful call to Poll.
// If the metadata is not available, the returned metadata and error are both nil.
func (op *UpdateGameServerClusterOperation) Metadata() (*gamingpb.OperationMetadata, error) {
	var meta gamingpb.OperationMetadata
	if err := op.lro.Metadata(&meta); err == longrunning.ErrNoMetadata {
		return nil, nil
	} else if err != nil {
		return nil, err
	}
	return &meta, nil
}

// Done reports whether the long-running operation has completed.
func (op *UpdateGameServerClusterOperation) Done() bool {
	return op.lro.Done()
}

// Name returns the name of the long-running operation.
// The name is assigned by the server and is unique within the service from which the operation is created.
func (op *UpdateGameServerClusterOperation) Name() string {
	return op.lro.Name()
}

// GameServerClusterIterator manages a stream of *gamingpb.GameServerCluster.
type GameServerClusterIterator struct {
	items    []*gamingpb.GameServerCluster
	pageInfo *iterator.PageInfo
	nextFunc func() error

	// Response is the raw response for the current page.
	// It must be cast to the RPC response type.
	// Calling Next() or InternalFetch() updates this value.
	Response interface{}

	// InternalFetch is for use by the Google Cloud Libraries only.
	// It is not part of the stable interface of this package.
	//
	// InternalFetch returns results from a single call to the underlying RPC.
	// The number of results is no greater than pageSize.
	// If there are no more results, nextPageToken is empty and err is nil.
	InternalFetch func(pageSize int, pageToken string) (results []*gamingpb.GameServerCluster, nextPageToken string, err error)
}

// PageInfo supports pagination. See the google.golang.org/api/iterator package for details.
func (it *GameServerClusterIterator) PageInfo() *iterator.PageInfo {
	return it.pageInfo
}

// Next returns the next result. Its second return value is iterator.Done if there are no more
// results. Once Next returns Done, all subsequent calls will return Done.
func (it *GameServerClusterIterator) Next() (*gamingpb.GameServerCluster, error) {
	var item *gamingpb.GameServerCluster
	if err := it.nextFunc(); err != nil {
		return item, err
	}
	item = it.items[0]
	it.items = it.items[1:]
	return item, nil
}

func (it *GameServerClusterIterator) bufLen() int {
	return len(it.items)
}

func (it *GameServerClusterIterator) takeBuf() interface{} {
	b := it.items
	it.items = nil
	return b
}
