metastore/apiv1beta/dataproc_metastore_client.go

// Copyright 2022 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     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 metastore

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

	"cloud.google.com/go/longrunning"
	lroauto "cloud.google.com/go/longrunning/autogen"
	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"
	metastorepb "google.golang.org/genproto/googleapis/cloud/metastore/v1beta"
	longrunningpb "google.golang.org/genproto/googleapis/longrunning"
	"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 newDataprocMetastoreClientHook clientHook

// DataprocMetastoreCallOptions contains the retry settings for each method of DataprocMetastoreClient.
type DataprocMetastoreCallOptions struct {
	ListServices         []gax.CallOption
	GetService           []gax.CallOption
	CreateService        []gax.CallOption
	UpdateService        []gax.CallOption
	DeleteService        []gax.CallOption
	ListMetadataImports  []gax.CallOption
	GetMetadataImport    []gax.CallOption
	CreateMetadataImport []gax.CallOption
	UpdateMetadataImport []gax.CallOption
	ExportMetadata       []gax.CallOption
	RestoreService       []gax.CallOption
	ListBackups          []gax.CallOption
	GetBackup            []gax.CallOption
	CreateBackup         []gax.CallOption
	DeleteBackup         []gax.CallOption
}

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

func defaultDataprocMetastoreCallOptions() *DataprocMetastoreCallOptions {
	return &DataprocMetastoreCallOptions{
		ListServices: []gax.CallOption{
			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,
				})
			}),
		},
		GetService: []gax.CallOption{
			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,
				})
			}),
		},
		CreateService: []gax.CallOption{},
		UpdateService: []gax.CallOption{},
		DeleteService: []gax.CallOption{},
		ListMetadataImports: []gax.CallOption{
			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,
				})
			}),
		},
		GetMetadataImport: []gax.CallOption{
			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,
				})
			}),
		},
		CreateMetadataImport: []gax.CallOption{},
		UpdateMetadataImport: []gax.CallOption{},
		ExportMetadata:       []gax.CallOption{},
		RestoreService:       []gax.CallOption{},
		ListBackups: []gax.CallOption{
			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,
				})
			}),
		},
		GetBackup: []gax.CallOption{
			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,
				})
			}),
		},
		CreateBackup: []gax.CallOption{},
		DeleteBackup: []gax.CallOption{},
	}
}

func defaultDataprocMetastoreRESTCallOptions() *DataprocMetastoreCallOptions {
	return &DataprocMetastoreCallOptions{
		ListServices: []gax.CallOption{
			gax.WithRetry(func() gax.Retryer {
				return gax.OnHTTPCodes(gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        10000 * time.Millisecond,
					Multiplier: 1.30,
				},
					http.StatusServiceUnavailable)
			}),
		},
		GetService: []gax.CallOption{
			gax.WithRetry(func() gax.Retryer {
				return gax.OnHTTPCodes(gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        10000 * time.Millisecond,
					Multiplier: 1.30,
				},
					http.StatusServiceUnavailable)
			}),
		},
		CreateService: []gax.CallOption{},
		UpdateService: []gax.CallOption{},
		DeleteService: []gax.CallOption{},
		ListMetadataImports: []gax.CallOption{
			gax.WithRetry(func() gax.Retryer {
				return gax.OnHTTPCodes(gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        10000 * time.Millisecond,
					Multiplier: 1.30,
				},
					http.StatusServiceUnavailable)
			}),
		},
		GetMetadataImport: []gax.CallOption{
			gax.WithRetry(func() gax.Retryer {
				return gax.OnHTTPCodes(gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        10000 * time.Millisecond,
					Multiplier: 1.30,
				},
					http.StatusServiceUnavailable)
			}),
		},
		CreateMetadataImport: []gax.CallOption{},
		UpdateMetadataImport: []gax.CallOption{},
		ExportMetadata:       []gax.CallOption{},
		RestoreService:       []gax.CallOption{},
		ListBackups: []gax.CallOption{
			gax.WithRetry(func() gax.Retryer {
				return gax.OnHTTPCodes(gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        10000 * time.Millisecond,
					Multiplier: 1.30,
				},
					http.StatusServiceUnavailable)
			}),
		},
		GetBackup: []gax.CallOption{
			gax.WithRetry(func() gax.Retryer {
				return gax.OnHTTPCodes(gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        10000 * time.Millisecond,
					Multiplier: 1.30,
				},
					http.StatusServiceUnavailable)
			}),
		},
		CreateBackup: []gax.CallOption{},
		DeleteBackup: []gax.CallOption{},
	}
}

// internalDataprocMetastoreClient is an interface that defines the methods available from Dataproc Metastore API.
type internalDataprocMetastoreClient interface {
	Close() error
	setGoogleClientInfo(...string)
	Connection() *grpc.ClientConn
	ListServices(context.Context, *metastorepb.ListServicesRequest, ...gax.CallOption) *ServiceIterator
	GetService(context.Context, *metastorepb.GetServiceRequest, ...gax.CallOption) (*metastorepb.Service, error)
	CreateService(context.Context, *metastorepb.CreateServiceRequest, ...gax.CallOption) (*CreateServiceOperation, error)
	CreateServiceOperation(name string) *CreateServiceOperation
	UpdateService(context.Context, *metastorepb.UpdateServiceRequest, ...gax.CallOption) (*UpdateServiceOperation, error)
	UpdateServiceOperation(name string) *UpdateServiceOperation
	DeleteService(context.Context, *metastorepb.DeleteServiceRequest, ...gax.CallOption) (*DeleteServiceOperation, error)
	DeleteServiceOperation(name string) *DeleteServiceOperation
	ListMetadataImports(context.Context, *metastorepb.ListMetadataImportsRequest, ...gax.CallOption) *MetadataImportIterator
	GetMetadataImport(context.Context, *metastorepb.GetMetadataImportRequest, ...gax.CallOption) (*metastorepb.MetadataImport, error)
	CreateMetadataImport(context.Context, *metastorepb.CreateMetadataImportRequest, ...gax.CallOption) (*CreateMetadataImportOperation, error)
	CreateMetadataImportOperation(name string) *CreateMetadataImportOperation
	UpdateMetadataImport(context.Context, *metastorepb.UpdateMetadataImportRequest, ...gax.CallOption) (*UpdateMetadataImportOperation, error)
	UpdateMetadataImportOperation(name string) *UpdateMetadataImportOperation
	ExportMetadata(context.Context, *metastorepb.ExportMetadataRequest, ...gax.CallOption) (*ExportMetadataOperation, error)
	ExportMetadataOperation(name string) *ExportMetadataOperation
	RestoreService(context.Context, *metastorepb.RestoreServiceRequest, ...gax.CallOption) (*RestoreServiceOperation, error)
	RestoreServiceOperation(name string) *RestoreServiceOperation
	ListBackups(context.Context, *metastorepb.ListBackupsRequest, ...gax.CallOption) *BackupIterator
	GetBackup(context.Context, *metastorepb.GetBackupRequest, ...gax.CallOption) (*metastorepb.Backup, error)
	CreateBackup(context.Context, *metastorepb.CreateBackupRequest, ...gax.CallOption) (*CreateBackupOperation, error)
	CreateBackupOperation(name string) *CreateBackupOperation
	DeleteBackup(context.Context, *metastorepb.DeleteBackupRequest, ...gax.CallOption) (*DeleteBackupOperation, error)
	DeleteBackupOperation(name string) *DeleteBackupOperation
}

// DataprocMetastoreClient is a client for interacting with Dataproc Metastore API.
// Methods, except Close, may be called concurrently. However, fields must not be modified concurrently with method calls.
//
// Configures and manages metastore services.
// Metastore services are fully managed, highly available, auto-scaled,
// auto-healing, OSS-native deployments of technical metadata management
// software. Each metastore service exposes a network endpoint through which
// metadata queries are served. Metadata queries can originate from a variety
// of sources, including Apache Hive, Apache Presto, and Apache Spark.
//
// The Dataproc Metastore API defines the following resource model:
//
//   The service works with a collection of Google Cloud projects, named:
//   /projects/*
//
//   Each project has a collection of available locations, named: /locations/*
//   (a location must refer to a Google Cloud region)
//
//   Each location has a collection of services, named: /services/*
//
//   Dataproc Metastore services are resources with names of the form:
//
// /projects/{project_number}/locations/{location_id}/services/{service_id}.
type DataprocMetastoreClient struct {
	// The internal transport-dependent client.
	internalClient internalDataprocMetastoreClient

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

	// 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 *DataprocMetastoreClient) 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 *DataprocMetastoreClient) setGoogleClientInfo(keyval ...string) {
	c.internalClient.setGoogleClientInfo(keyval...)
}

// Connection returns a connection to the API service.
//
// Deprecated.
func (c *DataprocMetastoreClient) Connection() *grpc.ClientConn {
	return c.internalClient.Connection()
}

// ListServices lists services in a project and location.
func (c *DataprocMetastoreClient) ListServices(ctx context.Context, req *metastorepb.ListServicesRequest, opts ...gax.CallOption) *ServiceIterator {
	return c.internalClient.ListServices(ctx, req, opts...)
}

// GetService gets the details of a single service.
func (c *DataprocMetastoreClient) GetService(ctx context.Context, req *metastorepb.GetServiceRequest, opts ...gax.CallOption) (*metastorepb.Service, error) {
	return c.internalClient.GetService(ctx, req, opts...)
}

// CreateService creates a metastore service in a project and location.
func (c *DataprocMetastoreClient) CreateService(ctx context.Context, req *metastorepb.CreateServiceRequest, opts ...gax.CallOption) (*CreateServiceOperation, error) {
	return c.internalClient.CreateService(ctx, req, opts...)
}

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

// UpdateService updates the parameters of a single service.
func (c *DataprocMetastoreClient) UpdateService(ctx context.Context, req *metastorepb.UpdateServiceRequest, opts ...gax.CallOption) (*UpdateServiceOperation, error) {
	return c.internalClient.UpdateService(ctx, req, opts...)
}

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

// DeleteService deletes a single service.
func (c *DataprocMetastoreClient) DeleteService(ctx context.Context, req *metastorepb.DeleteServiceRequest, opts ...gax.CallOption) (*DeleteServiceOperation, error) {
	return c.internalClient.DeleteService(ctx, req, opts...)
}

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

// ListMetadataImports lists imports in a service.
func (c *DataprocMetastoreClient) ListMetadataImports(ctx context.Context, req *metastorepb.ListMetadataImportsRequest, opts ...gax.CallOption) *MetadataImportIterator {
	return c.internalClient.ListMetadataImports(ctx, req, opts...)
}

// GetMetadataImport gets details of a single import.
func (c *DataprocMetastoreClient) GetMetadataImport(ctx context.Context, req *metastorepb.GetMetadataImportRequest, opts ...gax.CallOption) (*metastorepb.MetadataImport, error) {
	return c.internalClient.GetMetadataImport(ctx, req, opts...)
}

// CreateMetadataImport creates a new MetadataImport in a given project and location.
func (c *DataprocMetastoreClient) CreateMetadataImport(ctx context.Context, req *metastorepb.CreateMetadataImportRequest, opts ...gax.CallOption) (*CreateMetadataImportOperation, error) {
	return c.internalClient.CreateMetadataImport(ctx, req, opts...)
}

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

// UpdateMetadataImport updates a single import.
// Only the description field of MetadataImport is supported to be updated.
func (c *DataprocMetastoreClient) UpdateMetadataImport(ctx context.Context, req *metastorepb.UpdateMetadataImportRequest, opts ...gax.CallOption) (*UpdateMetadataImportOperation, error) {
	return c.internalClient.UpdateMetadataImport(ctx, req, opts...)
}

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

// ExportMetadata exports metadata from a service.
func (c *DataprocMetastoreClient) ExportMetadata(ctx context.Context, req *metastorepb.ExportMetadataRequest, opts ...gax.CallOption) (*ExportMetadataOperation, error) {
	return c.internalClient.ExportMetadata(ctx, req, opts...)
}

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

// RestoreService restores a service from a backup.
func (c *DataprocMetastoreClient) RestoreService(ctx context.Context, req *metastorepb.RestoreServiceRequest, opts ...gax.CallOption) (*RestoreServiceOperation, error) {
	return c.internalClient.RestoreService(ctx, req, opts...)
}

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

// ListBackups lists backups in a service.
func (c *DataprocMetastoreClient) ListBackups(ctx context.Context, req *metastorepb.ListBackupsRequest, opts ...gax.CallOption) *BackupIterator {
	return c.internalClient.ListBackups(ctx, req, opts...)
}

// GetBackup gets details of a single backup.
func (c *DataprocMetastoreClient) GetBackup(ctx context.Context, req *metastorepb.GetBackupRequest, opts ...gax.CallOption) (*metastorepb.Backup, error) {
	return c.internalClient.GetBackup(ctx, req, opts...)
}

// CreateBackup creates a new Backup in a given project and location.
func (c *DataprocMetastoreClient) CreateBackup(ctx context.Context, req *metastorepb.CreateBackupRequest, opts ...gax.CallOption) (*CreateBackupOperation, error) {
	return c.internalClient.CreateBackup(ctx, req, opts...)
}

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

// DeleteBackup deletes a single backup.
func (c *DataprocMetastoreClient) DeleteBackup(ctx context.Context, req *metastorepb.DeleteBackupRequest, opts ...gax.CallOption) (*DeleteBackupOperation, error) {
	return c.internalClient.DeleteBackup(ctx, req, opts...)
}

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

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

	// flag to opt out of default deadlines via GOOGLE_API_GO_EXPERIMENTAL_DISABLE_DEFAULT_DEADLINE
	disableDeadlines bool

	// Points back to the CallOptions field of the containing DataprocMetastoreClient
	CallOptions **DataprocMetastoreCallOptions

	// The gRPC API client.
	dataprocMetastoreClient metastorepb.DataprocMetastoreClient

	// 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
}

// NewDataprocMetastoreClient creates a new dataproc metastore client based on gRPC.
// The returned client must be Closed when it is done being used to clean up its underlying connections.
//
// Configures and manages metastore services.
// Metastore services are fully managed, highly available, auto-scaled,
// auto-healing, OSS-native deployments of technical metadata management
// software. Each metastore service exposes a network endpoint through which
// metadata queries are served. Metadata queries can originate from a variety
// of sources, including Apache Hive, Apache Presto, and Apache Spark.
//
// The Dataproc Metastore API defines the following resource model:
//
//   The service works with a collection of Google Cloud projects, named:
//   /projects/*
//
//   Each project has a collection of available locations, named: /locations/*
//   (a location must refer to a Google Cloud region)
//
//   Each location has a collection of services, named: /services/*
//
//   Dataproc Metastore services are resources with names of the form:
//
// /projects/{project_number}/locations/{location_id}/services/{service_id}.
func NewDataprocMetastoreClient(ctx context.Context, opts ...option.ClientOption) (*DataprocMetastoreClient, error) {
	clientOpts := defaultDataprocMetastoreGRPCClientOptions()
	if newDataprocMetastoreClientHook != nil {
		hookOpts, err := newDataprocMetastoreClientHook(ctx, clientHookParams{})
		if err != nil {
			return nil, err
		}
		clientOpts = append(clientOpts, hookOpts...)
	}

	disableDeadlines, err := checkDisableDeadlines()
	if err != nil {
		return nil, err
	}

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

	c := &dataprocMetastoreGRPCClient{
		connPool:                connPool,
		disableDeadlines:        disableDeadlines,
		dataprocMetastoreClient: metastorepb.NewDataprocMetastoreClient(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.
func (c *dataprocMetastoreGRPCClient) 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 *dataprocMetastoreGRPCClient) setGoogleClientInfo(keyval ...string) {
	kv := append([]string{"gl-go", versionGo()}, 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 *dataprocMetastoreGRPCClient) Close() error {
	return c.connPool.Close()
}

// Methods, except Close, may be called concurrently. However, fields must not be modified concurrently with method calls.
type dataprocMetastoreRESTClient 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 DataprocMetastoreClient
	CallOptions **DataprocMetastoreCallOptions
}

// NewDataprocMetastoreRESTClient creates a new dataproc metastore rest client.
//
// Configures and manages metastore services.
// Metastore services are fully managed, highly available, auto-scaled,
// auto-healing, OSS-native deployments of technical metadata management
// software. Each metastore service exposes a network endpoint through which
// metadata queries are served. Metadata queries can originate from a variety
// of sources, including Apache Hive, Apache Presto, and Apache Spark.
//
// The Dataproc Metastore API defines the following resource model:
//
//   The service works with a collection of Google Cloud projects, named:
//   /projects/*
//
//   Each project has a collection of available locations, named: /locations/*
//   (a location must refer to a Google Cloud region)
//
//   Each location has a collection of services, named: /services/*
//
//   Dataproc Metastore services are resources with names of the form:
//
// /projects/{project_number}/locations/{location_id}/services/{service_id}.
func NewDataprocMetastoreRESTClient(ctx context.Context, opts ...option.ClientOption) (*DataprocMetastoreClient, error) {
	clientOpts := append(defaultDataprocMetastoreRESTClientOptions(), opts...)
	httpClient, endpoint, err := httptransport.NewClient(ctx, clientOpts...)
	if err != nil {
		return nil, err
	}

	callOpts := defaultDataprocMetastoreRESTCallOptions()
	c := &dataprocMetastoreRESTClient{
		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 &DataprocMetastoreClient{internalClient: c, CallOptions: callOpts}, nil
}

func defaultDataprocMetastoreRESTClientOptions() []option.ClientOption {
	return []option.ClientOption{
		internaloption.WithDefaultEndpoint("https://metastore.googleapis.com"),
		internaloption.WithDefaultMTLSEndpoint("https://metastore.mtls.googleapis.com"),
		internaloption.WithDefaultAudience("https://metastore.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 *dataprocMetastoreRESTClient) setGoogleClientInfo(keyval ...string) {
	kv := append([]string{"gl-go", versionGo()}, 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 *dataprocMetastoreRESTClient) Close() error {
	// Replace httpClient with nil to force cleanup.
	c.httpClient = nil
	return nil
}

// Connection returns a connection to the API service.
//
// Deprecated.
func (c *dataprocMetastoreRESTClient) Connection() *grpc.ClientConn {
	return nil
}
func (c *dataprocMetastoreGRPCClient) ListServices(ctx context.Context, req *metastorepb.ListServicesRequest, opts ...gax.CallOption) *ServiceIterator {
	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).ListServices[0:len((*c.CallOptions).ListServices):len((*c.CallOptions).ListServices)], opts...)
	it := &ServiceIterator{}
	req = proto.Clone(req).(*metastorepb.ListServicesRequest)
	it.InternalFetch = func(pageSize int, pageToken string) ([]*metastorepb.Service, string, error) {
		resp := &metastorepb.ListServicesResponse{}
		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.dataprocMetastoreClient.ListServices(ctx, req, settings.GRPC...)
			return err
		}, opts...)
		if err != nil {
			return nil, "", err
		}

		it.Response = resp
		return resp.GetServices(), 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 *dataprocMetastoreGRPCClient) GetService(ctx context.Context, req *metastorepb.GetServiceRequest, opts ...gax.CallOption) (*metastorepb.Service, error) {
	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
		cctx, cancel := context.WithTimeout(ctx, 60000*time.Millisecond)
		defer cancel()
		ctx = cctx
	}
	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).GetService[0:len((*c.CallOptions).GetService):len((*c.CallOptions).GetService)], opts...)
	var resp *metastorepb.Service
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.dataprocMetastoreClient.GetService(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *dataprocMetastoreGRPCClient) CreateService(ctx context.Context, req *metastorepb.CreateServiceRequest, opts ...gax.CallOption) (*CreateServiceOperation, error) {
	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
		cctx, cancel := context.WithTimeout(ctx, 60000*time.Millisecond)
		defer cancel()
		ctx = cctx
	}
	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).CreateService[0:len((*c.CallOptions).CreateService):len((*c.CallOptions).CreateService)], opts...)
	var resp *longrunningpb.Operation
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.dataprocMetastoreClient.CreateService(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return &CreateServiceOperation{
		lro: longrunning.InternalNewOperation(*c.LROClient, resp),
	}, nil
}

func (c *dataprocMetastoreGRPCClient) UpdateService(ctx context.Context, req *metastorepb.UpdateServiceRequest, opts ...gax.CallOption) (*UpdateServiceOperation, error) {
	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
		cctx, cancel := context.WithTimeout(ctx, 60000*time.Millisecond)
		defer cancel()
		ctx = cctx
	}
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "service.name", url.QueryEscape(req.GetService().GetName())))

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

func (c *dataprocMetastoreGRPCClient) DeleteService(ctx context.Context, req *metastorepb.DeleteServiceRequest, opts ...gax.CallOption) (*DeleteServiceOperation, error) {
	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
		cctx, cancel := context.WithTimeout(ctx, 60000*time.Millisecond)
		defer cancel()
		ctx = cctx
	}
	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).DeleteService[0:len((*c.CallOptions).DeleteService):len((*c.CallOptions).DeleteService)], opts...)
	var resp *longrunningpb.Operation
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.dataprocMetastoreClient.DeleteService(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return &DeleteServiceOperation{
		lro: longrunning.InternalNewOperation(*c.LROClient, resp),
	}, nil
}

func (c *dataprocMetastoreGRPCClient) ListMetadataImports(ctx context.Context, req *metastorepb.ListMetadataImportsRequest, opts ...gax.CallOption) *MetadataImportIterator {
	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).ListMetadataImports[0:len((*c.CallOptions).ListMetadataImports):len((*c.CallOptions).ListMetadataImports)], opts...)
	it := &MetadataImportIterator{}
	req = proto.Clone(req).(*metastorepb.ListMetadataImportsRequest)
	it.InternalFetch = func(pageSize int, pageToken string) ([]*metastorepb.MetadataImport, string, error) {
		resp := &metastorepb.ListMetadataImportsResponse{}
		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.dataprocMetastoreClient.ListMetadataImports(ctx, req, settings.GRPC...)
			return err
		}, opts...)
		if err != nil {
			return nil, "", err
		}

		it.Response = resp
		return resp.GetMetadataImports(), 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 *dataprocMetastoreGRPCClient) GetMetadataImport(ctx context.Context, req *metastorepb.GetMetadataImportRequest, opts ...gax.CallOption) (*metastorepb.MetadataImport, error) {
	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
		cctx, cancel := context.WithTimeout(ctx, 60000*time.Millisecond)
		defer cancel()
		ctx = cctx
	}
	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).GetMetadataImport[0:len((*c.CallOptions).GetMetadataImport):len((*c.CallOptions).GetMetadataImport)], opts...)
	var resp *metastorepb.MetadataImport
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.dataprocMetastoreClient.GetMetadataImport(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *dataprocMetastoreGRPCClient) CreateMetadataImport(ctx context.Context, req *metastorepb.CreateMetadataImportRequest, opts ...gax.CallOption) (*CreateMetadataImportOperation, error) {
	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
		cctx, cancel := context.WithTimeout(ctx, 60000*time.Millisecond)
		defer cancel()
		ctx = cctx
	}
	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).CreateMetadataImport[0:len((*c.CallOptions).CreateMetadataImport):len((*c.CallOptions).CreateMetadataImport)], opts...)
	var resp *longrunningpb.Operation
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.dataprocMetastoreClient.CreateMetadataImport(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return &CreateMetadataImportOperation{
		lro: longrunning.InternalNewOperation(*c.LROClient, resp),
	}, nil
}

func (c *dataprocMetastoreGRPCClient) UpdateMetadataImport(ctx context.Context, req *metastorepb.UpdateMetadataImportRequest, opts ...gax.CallOption) (*UpdateMetadataImportOperation, error) {
	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
		cctx, cancel := context.WithTimeout(ctx, 60000*time.Millisecond)
		defer cancel()
		ctx = cctx
	}
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "metadata_import.name", url.QueryEscape(req.GetMetadataImport().GetName())))

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

func (c *dataprocMetastoreGRPCClient) ExportMetadata(ctx context.Context, req *metastorepb.ExportMetadataRequest, opts ...gax.CallOption) (*ExportMetadataOperation, error) {
	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
		cctx, cancel := context.WithTimeout(ctx, 60000*time.Millisecond)
		defer cancel()
		ctx = cctx
	}
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "service", url.QueryEscape(req.GetService())))

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

func (c *dataprocMetastoreGRPCClient) RestoreService(ctx context.Context, req *metastorepb.RestoreServiceRequest, opts ...gax.CallOption) (*RestoreServiceOperation, error) {
	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
		cctx, cancel := context.WithTimeout(ctx, 60000*time.Millisecond)
		defer cancel()
		ctx = cctx
	}
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "service", url.QueryEscape(req.GetService())))

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

func (c *dataprocMetastoreGRPCClient) ListBackups(ctx context.Context, req *metastorepb.ListBackupsRequest, opts ...gax.CallOption) *BackupIterator {
	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).ListBackups[0:len((*c.CallOptions).ListBackups):len((*c.CallOptions).ListBackups)], opts...)
	it := &BackupIterator{}
	req = proto.Clone(req).(*metastorepb.ListBackupsRequest)
	it.InternalFetch = func(pageSize int, pageToken string) ([]*metastorepb.Backup, string, error) {
		resp := &metastorepb.ListBackupsResponse{}
		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.dataprocMetastoreClient.ListBackups(ctx, req, settings.GRPC...)
			return err
		}, opts...)
		if err != nil {
			return nil, "", err
		}

		it.Response = resp
		return resp.GetBackups(), 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 *dataprocMetastoreGRPCClient) GetBackup(ctx context.Context, req *metastorepb.GetBackupRequest, opts ...gax.CallOption) (*metastorepb.Backup, error) {
	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
		cctx, cancel := context.WithTimeout(ctx, 60000*time.Millisecond)
		defer cancel()
		ctx = cctx
	}
	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).GetBackup[0:len((*c.CallOptions).GetBackup):len((*c.CallOptions).GetBackup)], opts...)
	var resp *metastorepb.Backup
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.dataprocMetastoreClient.GetBackup(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *dataprocMetastoreGRPCClient) CreateBackup(ctx context.Context, req *metastorepb.CreateBackupRequest, opts ...gax.CallOption) (*CreateBackupOperation, error) {
	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
		cctx, cancel := context.WithTimeout(ctx, 60000*time.Millisecond)
		defer cancel()
		ctx = cctx
	}
	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).CreateBackup[0:len((*c.CallOptions).CreateBackup):len((*c.CallOptions).CreateBackup)], opts...)
	var resp *longrunningpb.Operation
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.dataprocMetastoreClient.CreateBackup(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return &CreateBackupOperation{
		lro: longrunning.InternalNewOperation(*c.LROClient, resp),
	}, nil
}

func (c *dataprocMetastoreGRPCClient) DeleteBackup(ctx context.Context, req *metastorepb.DeleteBackupRequest, opts ...gax.CallOption) (*DeleteBackupOperation, error) {
	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
		cctx, cancel := context.WithTimeout(ctx, 60000*time.Millisecond)
		defer cancel()
		ctx = cctx
	}
	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).DeleteBackup[0:len((*c.CallOptions).DeleteBackup):len((*c.CallOptions).DeleteBackup)], opts...)
	var resp *longrunningpb.Operation
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.dataprocMetastoreClient.DeleteBackup(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return &DeleteBackupOperation{
		lro: longrunning.InternalNewOperation(*c.LROClient, resp),
	}, nil
}

// ListServices lists services in a project and location.
func (c *dataprocMetastoreRESTClient) ListServices(ctx context.Context, req *metastorepb.ListServicesRequest, opts ...gax.CallOption) *ServiceIterator {
	it := &ServiceIterator{}
	req = proto.Clone(req).(*metastorepb.ListServicesRequest)
	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	it.InternalFetch = func(pageSize int, pageToken string) ([]*metastorepb.Service, string, error) {
		resp := &metastorepb.ListServicesResponse{}
		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/services", req.GetParent())

		params := url.Values{}
		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 := ioutil.ReadAll(httpRsp.Body)
			if err != nil {
				return err
			}

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

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

// GetService gets the details of a single service.
func (c *dataprocMetastoreRESTClient) GetService(ctx context.Context, req *metastorepb.GetServiceRequest, opts ...gax.CallOption) (*metastorepb.Service, error) {
	baseUrl, err := url.Parse(c.endpoint)
	if err != nil {
		return nil, err
	}
	baseUrl.Path += fmt.Sprintf("/v1beta/%v", req.GetName())

	// 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).GetService[0:len((*c.CallOptions).GetService):len((*c.CallOptions).GetService)], opts...)
	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	resp := &metastorepb.Service{}
	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 := ioutil.ReadAll(httpRsp.Body)
		if err != nil {
			return err
		}

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

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

// CreateService creates a metastore service in a project and location.
func (c *dataprocMetastoreRESTClient) CreateService(ctx context.Context, req *metastorepb.CreateServiceRequest, opts ...gax.CallOption) (*CreateServiceOperation, error) {
	m := protojson.MarshalOptions{AllowPartial: true, UseEnumNumbers: true}
	body := req.GetService()
	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/services", req.GetParent())

	params := url.Values{}
	if req.GetRequestId() != "" {
		params.Add("requestId", fmt.Sprintf("%v", req.GetRequestId()))
	}
	params.Add("serviceId", fmt.Sprintf("%v", req.GetServiceId()))

	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 := ioutil.ReadAll(httpRsp.Body)
		if err != nil {
			return err
		}

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

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

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

// UpdateService updates the parameters of a single service.
func (c *dataprocMetastoreRESTClient) UpdateService(ctx context.Context, req *metastorepb.UpdateServiceRequest, opts ...gax.CallOption) (*UpdateServiceOperation, error) {
	m := protojson.MarshalOptions{AllowPartial: true, UseEnumNumbers: true}
	body := req.GetService()
	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.GetService().GetName())

	params := url.Values{}
	if req.GetRequestId() != "" {
		params.Add("requestId", fmt.Sprintf("%v", req.GetRequestId()))
	}
	if req.GetUpdateMask().GetPaths() != nil {
		params.Add("updateMask.paths", fmt.Sprintf("%v", req.GetUpdateMask().GetPaths()))
	}

	baseUrl.RawQuery = params.Encode()

	// Build HTTP headers from client and context metadata.
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "service.name", url.QueryEscape(req.GetService().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 := ioutil.ReadAll(httpRsp.Body)
		if err != nil {
			return err
		}

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

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

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

// DeleteService deletes a single service.
func (c *dataprocMetastoreRESTClient) DeleteService(ctx context.Context, req *metastorepb.DeleteServiceRequest, opts ...gax.CallOption) (*DeleteServiceOperation, error) {
	baseUrl, err := url.Parse(c.endpoint)
	if err != nil {
		return nil, err
	}
	baseUrl.Path += fmt.Sprintf("/v1beta/%v", req.GetName())

	params := url.Values{}
	if req.GetRequestId() != "" {
		params.Add("requestId", fmt.Sprintf("%v", req.GetRequestId()))
	}

	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 := ioutil.ReadAll(httpRsp.Body)
		if err != nil {
			return err
		}

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

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

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

// ListMetadataImports lists imports in a service.
func (c *dataprocMetastoreRESTClient) ListMetadataImports(ctx context.Context, req *metastorepb.ListMetadataImportsRequest, opts ...gax.CallOption) *MetadataImportIterator {
	it := &MetadataImportIterator{}
	req = proto.Clone(req).(*metastorepb.ListMetadataImportsRequest)
	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	it.InternalFetch = func(pageSize int, pageToken string) ([]*metastorepb.MetadataImport, string, error) {
		resp := &metastorepb.ListMetadataImportsResponse{}
		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/metadataImports", req.GetParent())

		params := url.Values{}
		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 := ioutil.ReadAll(httpRsp.Body)
			if err != nil {
				return err
			}

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

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

// GetMetadataImport gets details of a single import.
func (c *dataprocMetastoreRESTClient) GetMetadataImport(ctx context.Context, req *metastorepb.GetMetadataImportRequest, opts ...gax.CallOption) (*metastorepb.MetadataImport, error) {
	baseUrl, err := url.Parse(c.endpoint)
	if err != nil {
		return nil, err
	}
	baseUrl.Path += fmt.Sprintf("/v1beta/%v", req.GetName())

	// 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).GetMetadataImport[0:len((*c.CallOptions).GetMetadataImport):len((*c.CallOptions).GetMetadataImport)], opts...)
	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	resp := &metastorepb.MetadataImport{}
	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 := ioutil.ReadAll(httpRsp.Body)
		if err != nil {
			return err
		}

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

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

// CreateMetadataImport creates a new MetadataImport in a given project and location.
func (c *dataprocMetastoreRESTClient) CreateMetadataImport(ctx context.Context, req *metastorepb.CreateMetadataImportRequest, opts ...gax.CallOption) (*CreateMetadataImportOperation, error) {
	m := protojson.MarshalOptions{AllowPartial: true, UseEnumNumbers: true}
	body := req.GetMetadataImport()
	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/metadataImports", req.GetParent())

	params := url.Values{}
	params.Add("metadataImportId", fmt.Sprintf("%v", req.GetMetadataImportId()))
	if req.GetRequestId() != "" {
		params.Add("requestId", fmt.Sprintf("%v", req.GetRequestId()))
	}

	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 := ioutil.ReadAll(httpRsp.Body)
		if err != nil {
			return err
		}

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

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

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

// UpdateMetadataImport updates a single import.
// Only the description field of MetadataImport is supported to be updated.
func (c *dataprocMetastoreRESTClient) UpdateMetadataImport(ctx context.Context, req *metastorepb.UpdateMetadataImportRequest, opts ...gax.CallOption) (*UpdateMetadataImportOperation, error) {
	m := protojson.MarshalOptions{AllowPartial: true, UseEnumNumbers: true}
	body := req.GetMetadataImport()
	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.GetMetadataImport().GetName())

	params := url.Values{}
	if req.GetRequestId() != "" {
		params.Add("requestId", fmt.Sprintf("%v", req.GetRequestId()))
	}
	if req.GetUpdateMask().GetPaths() != nil {
		params.Add("updateMask.paths", fmt.Sprintf("%v", req.GetUpdateMask().GetPaths()))
	}

	baseUrl.RawQuery = params.Encode()

	// Build HTTP headers from client and context metadata.
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "metadata_import.name", url.QueryEscape(req.GetMetadataImport().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 := ioutil.ReadAll(httpRsp.Body)
		if err != nil {
			return err
		}

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

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

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

// ExportMetadata exports metadata from a service.
func (c *dataprocMetastoreRESTClient) ExportMetadata(ctx context.Context, req *metastorepb.ExportMetadataRequest, opts ...gax.CallOption) (*ExportMetadataOperation, error) {
	m := protojson.MarshalOptions{AllowPartial: true, UseEnumNumbers: true}
	jsonReq, err := m.Marshal(req)
	if err != nil {
		return nil, err
	}

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

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

	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 := ioutil.ReadAll(httpRsp.Body)
		if err != nil {
			return err
		}

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

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

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

// RestoreService restores a service from a backup.
func (c *dataprocMetastoreRESTClient) RestoreService(ctx context.Context, req *metastorepb.RestoreServiceRequest, opts ...gax.CallOption) (*RestoreServiceOperation, error) {
	m := protojson.MarshalOptions{AllowPartial: true, UseEnumNumbers: true}
	jsonReq, err := m.Marshal(req)
	if err != nil {
		return nil, err
	}

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

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

	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 := ioutil.ReadAll(httpRsp.Body)
		if err != nil {
			return err
		}

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

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

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

// ListBackups lists backups in a service.
func (c *dataprocMetastoreRESTClient) ListBackups(ctx context.Context, req *metastorepb.ListBackupsRequest, opts ...gax.CallOption) *BackupIterator {
	it := &BackupIterator{}
	req = proto.Clone(req).(*metastorepb.ListBackupsRequest)
	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	it.InternalFetch = func(pageSize int, pageToken string) ([]*metastorepb.Backup, string, error) {
		resp := &metastorepb.ListBackupsResponse{}
		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/backups", req.GetParent())

		params := url.Values{}
		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 := ioutil.ReadAll(httpRsp.Body)
			if err != nil {
				return err
			}

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

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

// GetBackup gets details of a single backup.
func (c *dataprocMetastoreRESTClient) GetBackup(ctx context.Context, req *metastorepb.GetBackupRequest, opts ...gax.CallOption) (*metastorepb.Backup, error) {
	baseUrl, err := url.Parse(c.endpoint)
	if err != nil {
		return nil, err
	}
	baseUrl.Path += fmt.Sprintf("/v1beta/%v", req.GetName())

	// 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).GetBackup[0:len((*c.CallOptions).GetBackup):len((*c.CallOptions).GetBackup)], opts...)
	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	resp := &metastorepb.Backup{}
	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 := ioutil.ReadAll(httpRsp.Body)
		if err != nil {
			return err
		}

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

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

// CreateBackup creates a new Backup in a given project and location.
func (c *dataprocMetastoreRESTClient) CreateBackup(ctx context.Context, req *metastorepb.CreateBackupRequest, opts ...gax.CallOption) (*CreateBackupOperation, error) {
	m := protojson.MarshalOptions{AllowPartial: true, UseEnumNumbers: true}
	body := req.GetBackup()
	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/backups", req.GetParent())

	params := url.Values{}
	params.Add("backupId", fmt.Sprintf("%v", req.GetBackupId()))
	if req.GetRequestId() != "" {
		params.Add("requestId", fmt.Sprintf("%v", req.GetRequestId()))
	}

	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 := ioutil.ReadAll(httpRsp.Body)
		if err != nil {
			return err
		}

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

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

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

// DeleteBackup deletes a single backup.
func (c *dataprocMetastoreRESTClient) DeleteBackup(ctx context.Context, req *metastorepb.DeleteBackupRequest, opts ...gax.CallOption) (*DeleteBackupOperation, error) {
	baseUrl, err := url.Parse(c.endpoint)
	if err != nil {
		return nil, err
	}
	baseUrl.Path += fmt.Sprintf("/v1beta/%v", req.GetName())

	params := url.Values{}
	if req.GetRequestId() != "" {
		params.Add("requestId", fmt.Sprintf("%v", req.GetRequestId()))
	}

	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 := ioutil.ReadAll(httpRsp.Body)
		if err != nil {
			return err
		}

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

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

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

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

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

// CreateBackupOperation returns a new CreateBackupOperation from a given name.
// The name must be that of a previously created CreateBackupOperation, possibly from a different process.
func (c *dataprocMetastoreRESTClient) CreateBackupOperation(name string) *CreateBackupOperation {
	override := fmt.Sprintf("/v1beta/%s", name)
	return &CreateBackupOperation{
		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 *CreateBackupOperation) Wait(ctx context.Context, opts ...gax.CallOption) (*metastorepb.Backup, error) {
	opts = append([]gax.CallOption{gax.WithPath(op.pollPath)}, opts...)
	var resp metastorepb.Backup
	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 *CreateBackupOperation) Poll(ctx context.Context, opts ...gax.CallOption) (*metastorepb.Backup, error) {
	opts = append([]gax.CallOption{gax.WithPath(op.pollPath)}, opts...)
	var resp metastorepb.Backup
	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 *CreateBackupOperation) Metadata() (*metastorepb.OperationMetadata, error) {
	var meta metastorepb.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 *CreateBackupOperation) 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 *CreateBackupOperation) Name() string {
	return op.lro.Name()
}

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

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

// CreateMetadataImportOperation returns a new CreateMetadataImportOperation from a given name.
// The name must be that of a previously created CreateMetadataImportOperation, possibly from a different process.
func (c *dataprocMetastoreRESTClient) CreateMetadataImportOperation(name string) *CreateMetadataImportOperation {
	override := fmt.Sprintf("/v1beta/%s", name)
	return &CreateMetadataImportOperation{
		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 *CreateMetadataImportOperation) Wait(ctx context.Context, opts ...gax.CallOption) (*metastorepb.MetadataImport, error) {
	opts = append([]gax.CallOption{gax.WithPath(op.pollPath)}, opts...)
	var resp metastorepb.MetadataImport
	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 *CreateMetadataImportOperation) Poll(ctx context.Context, opts ...gax.CallOption) (*metastorepb.MetadataImport, error) {
	opts = append([]gax.CallOption{gax.WithPath(op.pollPath)}, opts...)
	var resp metastorepb.MetadataImport
	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 *CreateMetadataImportOperation) Metadata() (*metastorepb.OperationMetadata, error) {
	var meta metastorepb.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 *CreateMetadataImportOperation) 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 *CreateMetadataImportOperation) Name() string {
	return op.lro.Name()
}

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

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

// CreateServiceOperation returns a new CreateServiceOperation from a given name.
// The name must be that of a previously created CreateServiceOperation, possibly from a different process.
func (c *dataprocMetastoreRESTClient) CreateServiceOperation(name string) *CreateServiceOperation {
	override := fmt.Sprintf("/v1beta/%s", name)
	return &CreateServiceOperation{
		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 *CreateServiceOperation) Wait(ctx context.Context, opts ...gax.CallOption) (*metastorepb.Service, error) {
	opts = append([]gax.CallOption{gax.WithPath(op.pollPath)}, opts...)
	var resp metastorepb.Service
	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 *CreateServiceOperation) Poll(ctx context.Context, opts ...gax.CallOption) (*metastorepb.Service, error) {
	opts = append([]gax.CallOption{gax.WithPath(op.pollPath)}, opts...)
	var resp metastorepb.Service
	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 *CreateServiceOperation) Metadata() (*metastorepb.OperationMetadata, error) {
	var meta metastorepb.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 *CreateServiceOperation) 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 *CreateServiceOperation) Name() string {
	return op.lro.Name()
}

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

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

// DeleteBackupOperation returns a new DeleteBackupOperation from a given name.
// The name must be that of a previously created DeleteBackupOperation, possibly from a different process.
func (c *dataprocMetastoreRESTClient) DeleteBackupOperation(name string) *DeleteBackupOperation {
	override := fmt.Sprintf("/v1beta/%s", name)
	return &DeleteBackupOperation{
		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 *DeleteBackupOperation) 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 *DeleteBackupOperation) 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 *DeleteBackupOperation) Metadata() (*metastorepb.OperationMetadata, error) {
	var meta metastorepb.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 *DeleteBackupOperation) 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 *DeleteBackupOperation) Name() string {
	return op.lro.Name()
}

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

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

// DeleteServiceOperation returns a new DeleteServiceOperation from a given name.
// The name must be that of a previously created DeleteServiceOperation, possibly from a different process.
func (c *dataprocMetastoreRESTClient) DeleteServiceOperation(name string) *DeleteServiceOperation {
	override := fmt.Sprintf("/v1beta/%s", name)
	return &DeleteServiceOperation{
		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 *DeleteServiceOperation) 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 *DeleteServiceOperation) 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 *DeleteServiceOperation) Metadata() (*metastorepb.OperationMetadata, error) {
	var meta metastorepb.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 *DeleteServiceOperation) 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 *DeleteServiceOperation) Name() string {
	return op.lro.Name()
}

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

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

// ExportMetadataOperation returns a new ExportMetadataOperation from a given name.
// The name must be that of a previously created ExportMetadataOperation, possibly from a different process.
func (c *dataprocMetastoreRESTClient) ExportMetadataOperation(name string) *ExportMetadataOperation {
	override := fmt.Sprintf("/v1beta/%s", name)
	return &ExportMetadataOperation{
		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 *ExportMetadataOperation) Wait(ctx context.Context, opts ...gax.CallOption) (*metastorepb.MetadataExport, error) {
	opts = append([]gax.CallOption{gax.WithPath(op.pollPath)}, opts...)
	var resp metastorepb.MetadataExport
	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 *ExportMetadataOperation) Poll(ctx context.Context, opts ...gax.CallOption) (*metastorepb.MetadataExport, error) {
	opts = append([]gax.CallOption{gax.WithPath(op.pollPath)}, opts...)
	var resp metastorepb.MetadataExport
	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 *ExportMetadataOperation) Metadata() (*metastorepb.OperationMetadata, error) {
	var meta metastorepb.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 *ExportMetadataOperation) 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 *ExportMetadataOperation) Name() string {
	return op.lro.Name()
}

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

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

// RestoreServiceOperation returns a new RestoreServiceOperation from a given name.
// The name must be that of a previously created RestoreServiceOperation, possibly from a different process.
func (c *dataprocMetastoreRESTClient) RestoreServiceOperation(name string) *RestoreServiceOperation {
	override := fmt.Sprintf("/v1beta/%s", name)
	return &RestoreServiceOperation{
		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 *RestoreServiceOperation) Wait(ctx context.Context, opts ...gax.CallOption) (*metastorepb.Restore, error) {
	opts = append([]gax.CallOption{gax.WithPath(op.pollPath)}, opts...)
	var resp metastorepb.Restore
	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 *RestoreServiceOperation) Poll(ctx context.Context, opts ...gax.CallOption) (*metastorepb.Restore, error) {
	opts = append([]gax.CallOption{gax.WithPath(op.pollPath)}, opts...)
	var resp metastorepb.Restore
	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 *RestoreServiceOperation) Metadata() (*metastorepb.OperationMetadata, error) {
	var meta metastorepb.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 *RestoreServiceOperation) 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 *RestoreServiceOperation) Name() string {
	return op.lro.Name()
}

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

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

// UpdateMetadataImportOperation returns a new UpdateMetadataImportOperation from a given name.
// The name must be that of a previously created UpdateMetadataImportOperation, possibly from a different process.
func (c *dataprocMetastoreRESTClient) UpdateMetadataImportOperation(name string) *UpdateMetadataImportOperation {
	override := fmt.Sprintf("/v1beta/%s", name)
	return &UpdateMetadataImportOperation{
		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 *UpdateMetadataImportOperation) Wait(ctx context.Context, opts ...gax.CallOption) (*metastorepb.MetadataImport, error) {
	opts = append([]gax.CallOption{gax.WithPath(op.pollPath)}, opts...)
	var resp metastorepb.MetadataImport
	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 *UpdateMetadataImportOperation) Poll(ctx context.Context, opts ...gax.CallOption) (*metastorepb.MetadataImport, error) {
	opts = append([]gax.CallOption{gax.WithPath(op.pollPath)}, opts...)
	var resp metastorepb.MetadataImport
	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 *UpdateMetadataImportOperation) Metadata() (*metastorepb.OperationMetadata, error) {
	var meta metastorepb.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 *UpdateMetadataImportOperation) 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 *UpdateMetadataImportOperation) Name() string {
	return op.lro.Name()
}

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

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

// UpdateServiceOperation returns a new UpdateServiceOperation from a given name.
// The name must be that of a previously created UpdateServiceOperation, possibly from a different process.
func (c *dataprocMetastoreRESTClient) UpdateServiceOperation(name string) *UpdateServiceOperation {
	override := fmt.Sprintf("/v1beta/%s", name)
	return &UpdateServiceOperation{
		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 *UpdateServiceOperation) Wait(ctx context.Context, opts ...gax.CallOption) (*metastorepb.Service, error) {
	opts = append([]gax.CallOption{gax.WithPath(op.pollPath)}, opts...)
	var resp metastorepb.Service
	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 *UpdateServiceOperation) Poll(ctx context.Context, opts ...gax.CallOption) (*metastorepb.Service, error) {
	opts = append([]gax.CallOption{gax.WithPath(op.pollPath)}, opts...)
	var resp metastorepb.Service
	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 *UpdateServiceOperation) Metadata() (*metastorepb.OperationMetadata, error) {
	var meta metastorepb.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 *UpdateServiceOperation) 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 *UpdateServiceOperation) Name() string {
	return op.lro.Name()
}

// BackupIterator manages a stream of *metastorepb.Backup.
type BackupIterator struct {
	items    []*metastorepb.Backup
	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 []*metastorepb.Backup, nextPageToken string, err error)
}

// PageInfo supports pagination. See the google.golang.org/api/iterator package for details.
func (it *BackupIterator) 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 *BackupIterator) Next() (*metastorepb.Backup, error) {
	var item *metastorepb.Backup
	if err := it.nextFunc(); err != nil {
		return item, err
	}
	item = it.items[0]
	it.items = it.items[1:]
	return item, nil
}

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

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

// MetadataImportIterator manages a stream of *metastorepb.MetadataImport.
type MetadataImportIterator struct {
	items    []*metastorepb.MetadataImport
	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 []*metastorepb.MetadataImport, nextPageToken string, err error)
}

// PageInfo supports pagination. See the google.golang.org/api/iterator package for details.
func (it *MetadataImportIterator) 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 *MetadataImportIterator) Next() (*metastorepb.MetadataImport, error) {
	var item *metastorepb.MetadataImport
	if err := it.nextFunc(); err != nil {
		return item, err
	}
	item = it.items[0]
	it.items = it.items[1:]
	return item, nil
}

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

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

// ServiceIterator manages a stream of *metastorepb.Service.
type ServiceIterator struct {
	items    []*metastorepb.Service
	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 []*metastorepb.Service, nextPageToken string, err error)
}

// PageInfo supports pagination. See the google.golang.org/api/iterator package for details.
func (it *ServiceIterator) 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 *ServiceIterator) Next() (*metastorepb.Service, error) {
	var item *metastorepb.Service
	if err := it.nextFunc(); err != nil {
		return item, err
	}
	item = it.items[0]
	it.items = it.items[1:]
	return item, nil
}

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

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