datastore/admin/apiv1/datastore_admin_client.go

// Copyright 2024 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 admin

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

	adminpb "cloud.google.com/go/datastore/admin/apiv1/adminpb"
	"cloud.google.com/go/longrunning"
	lroauto "cloud.google.com/go/longrunning/autogen"
	longrunningpb "cloud.google.com/go/longrunning/autogen/longrunningpb"
	gax "github.com/googleapis/gax-go/v2"
	"google.golang.org/api/googleapi"
	"google.golang.org/api/iterator"
	"google.golang.org/api/option"
	"google.golang.org/api/option/internaloption"
	gtransport "google.golang.org/api/transport/grpc"
	httptransport "google.golang.org/api/transport/http"
	"google.golang.org/grpc"
	"google.golang.org/grpc/codes"
	"google.golang.org/protobuf/encoding/protojson"
	"google.golang.org/protobuf/proto"
)

var newDatastoreAdminClientHook clientHook

// DatastoreAdminCallOptions contains the retry settings for each method of DatastoreAdminClient.
type DatastoreAdminCallOptions struct {
	ExportEntities  []gax.CallOption
	ImportEntities  []gax.CallOption
	CreateIndex     []gax.CallOption
	DeleteIndex     []gax.CallOption
	GetIndex        []gax.CallOption
	ListIndexes     []gax.CallOption
	CancelOperation []gax.CallOption
	DeleteOperation []gax.CallOption
	GetOperation    []gax.CallOption
	ListOperations  []gax.CallOption
}

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

func defaultDatastoreAdminCallOptions() *DatastoreAdminCallOptions {
	return &DatastoreAdminCallOptions{
		ExportEntities: []gax.CallOption{
			gax.WithTimeout(60000 * time.Millisecond),
		},
		ImportEntities: []gax.CallOption{
			gax.WithTimeout(60000 * time.Millisecond),
		},
		CreateIndex: []gax.CallOption{
			gax.WithTimeout(60000 * time.Millisecond),
		},
		DeleteIndex: []gax.CallOption{
			gax.WithTimeout(60000 * time.Millisecond),
		},
		GetIndex: []gax.CallOption{
			gax.WithTimeout(60000 * time.Millisecond),
			gax.WithRetry(func() gax.Retryer {
				return gax.OnCodes([]codes.Code{
					codes.Unavailable,
					codes.DeadlineExceeded,
				}, gax.Backoff{
					Initial:    100 * time.Millisecond,
					Max:        60000 * time.Millisecond,
					Multiplier: 1.30,
				})
			}),
		},
		ListIndexes: []gax.CallOption{
			gax.WithTimeout(60000 * time.Millisecond),
			gax.WithRetry(func() gax.Retryer {
				return gax.OnCodes([]codes.Code{
					codes.Unavailable,
					codes.DeadlineExceeded,
				}, gax.Backoff{
					Initial:    100 * time.Millisecond,
					Max:        60000 * time.Millisecond,
					Multiplier: 1.30,
				})
			}),
		},
		CancelOperation: []gax.CallOption{},
		DeleteOperation: []gax.CallOption{},
		GetOperation:    []gax.CallOption{},
		ListOperations:  []gax.CallOption{},
	}
}

func defaultDatastoreAdminRESTCallOptions() *DatastoreAdminCallOptions {
	return &DatastoreAdminCallOptions{
		ExportEntities: []gax.CallOption{
			gax.WithTimeout(60000 * time.Millisecond),
		},
		ImportEntities: []gax.CallOption{
			gax.WithTimeout(60000 * time.Millisecond),
		},
		CreateIndex: []gax.CallOption{
			gax.WithTimeout(60000 * time.Millisecond),
		},
		DeleteIndex: []gax.CallOption{
			gax.WithTimeout(60000 * time.Millisecond),
		},
		GetIndex: []gax.CallOption{
			gax.WithTimeout(60000 * time.Millisecond),
			gax.WithRetry(func() gax.Retryer {
				return gax.OnHTTPCodes(gax.Backoff{
					Initial:    100 * time.Millisecond,
					Max:        60000 * time.Millisecond,
					Multiplier: 1.30,
				},
					http.StatusServiceUnavailable,
					http.StatusGatewayTimeout)
			}),
		},
		ListIndexes: []gax.CallOption{
			gax.WithTimeout(60000 * time.Millisecond),
			gax.WithRetry(func() gax.Retryer {
				return gax.OnHTTPCodes(gax.Backoff{
					Initial:    100 * time.Millisecond,
					Max:        60000 * time.Millisecond,
					Multiplier: 1.30,
				},
					http.StatusServiceUnavailable,
					http.StatusGatewayTimeout)
			}),
		},
		CancelOperation: []gax.CallOption{},
		DeleteOperation: []gax.CallOption{},
		GetOperation:    []gax.CallOption{},
		ListOperations:  []gax.CallOption{},
	}
}

// internalDatastoreAdminClient is an interface that defines the methods available from Cloud Datastore API.
type internalDatastoreAdminClient interface {
	Close() error
	setGoogleClientInfo(...string)
	Connection() *grpc.ClientConn
	ExportEntities(context.Context, *adminpb.ExportEntitiesRequest, ...gax.CallOption) (*ExportEntitiesOperation, error)
	ExportEntitiesOperation(name string) *ExportEntitiesOperation
	ImportEntities(context.Context, *adminpb.ImportEntitiesRequest, ...gax.CallOption) (*ImportEntitiesOperation, error)
	ImportEntitiesOperation(name string) *ImportEntitiesOperation
	CreateIndex(context.Context, *adminpb.CreateIndexRequest, ...gax.CallOption) (*CreateIndexOperation, error)
	CreateIndexOperation(name string) *CreateIndexOperation
	DeleteIndex(context.Context, *adminpb.DeleteIndexRequest, ...gax.CallOption) (*DeleteIndexOperation, error)
	DeleteIndexOperation(name string) *DeleteIndexOperation
	GetIndex(context.Context, *adminpb.GetIndexRequest, ...gax.CallOption) (*adminpb.Index, error)
	ListIndexes(context.Context, *adminpb.ListIndexesRequest, ...gax.CallOption) *IndexIterator
	CancelOperation(context.Context, *longrunningpb.CancelOperationRequest, ...gax.CallOption) error
	DeleteOperation(context.Context, *longrunningpb.DeleteOperationRequest, ...gax.CallOption) error
	GetOperation(context.Context, *longrunningpb.GetOperationRequest, ...gax.CallOption) (*longrunningpb.Operation, error)
	ListOperations(context.Context, *longrunningpb.ListOperationsRequest, ...gax.CallOption) *OperationIterator
}

// DatastoreAdminClient is a client for interacting with Cloud Datastore API.
// Methods, except Close, may be called concurrently. However, fields must not be modified concurrently with method calls.
//
// # Google Cloud Datastore Admin API
//
// The Datastore Admin API provides several admin services for Cloud Datastore.
//
// Concepts: Project, namespace, kind, and entity as defined in the Google Cloud
// Datastore API.
//
// Operation: An Operation represents work being performed in the background.
//
// EntityFilter: Allows specifying a subset of entities in a project. This is
// specified as a combination of kinds and namespaces (either or both of which
// may be all).
//
// Export/Import Service:
//
//	The Export/Import service provides the ability to copy all or a subset of
//	entities to/from Google Cloud Storage.
//
//	Exported data may be imported into Cloud Datastore for any Google Cloud
//	Platform project. It is not restricted to the export source project. It is
//	possible to export from one project and then import into another.
//
//	Exported data can also be loaded into Google BigQuery for analysis.
//
//	Exports and imports are performed asynchronously. An Operation resource is
//	created for each export/import. The state (including any errors encountered)
//	of the export/import may be queried via the Operation resource.
//
// Index Service:
//
//	The index service manages Cloud Datastore composite indexes.
//
//	Index creation and deletion are performed asynchronously.
//	An Operation resource is created for each such asynchronous operation.
//	The state of the operation (including any errors encountered)
//	may be queried via the Operation resource.
//
// Operation Service:
//
//	The Operations collection provides a record of actions performed for the
//	specified project (including any operations in progress). Operations are not
//	created directly but through calls on other collections or resources.
//
//	An operation that is not yet done may be cancelled. The request to cancel
//	is asynchronous and the operation may continue to run for some time after the
//	request to cancel is made.
//
//	An operation that is done may be deleted so that it is no longer listed as
//	part of the Operation collection.
//
//	ListOperations returns all pending operations, but not completed
//	operations.
//
//	Operations are created by service DatastoreAdmin, but are accessed via
//	service google.longrunning.Operations.
type DatastoreAdminClient struct {
	// The internal transport-dependent client.
	internalClient internalDatastoreAdminClient

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

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

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

// ExportEntities exports a copy of all or a subset of entities from Google Cloud Datastore
// to another storage system, such as Google Cloud Storage. Recent updates to
// entities may not be reflected in the export. The export occurs in the
// background and its progress can be monitored and managed via the
// Operation resource that is created. The output of an export may only be
// used once the associated operation is done. If an export operation is
// cancelled before completion it may leave partial data behind in Google
// Cloud Storage.
func (c *DatastoreAdminClient) ExportEntities(ctx context.Context, req *adminpb.ExportEntitiesRequest, opts ...gax.CallOption) (*ExportEntitiesOperation, error) {
	return c.internalClient.ExportEntities(ctx, req, opts...)
}

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

// ImportEntities imports entities into Google Cloud Datastore. Existing entities with the
// same key are overwritten. The import occurs in the background and its
// progress can be monitored and managed via the Operation resource that is
// created. If an ImportEntities operation is cancelled, it is possible
// that a subset of the data has already been imported to Cloud Datastore.
func (c *DatastoreAdminClient) ImportEntities(ctx context.Context, req *adminpb.ImportEntitiesRequest, opts ...gax.CallOption) (*ImportEntitiesOperation, error) {
	return c.internalClient.ImportEntities(ctx, req, opts...)
}

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

// CreateIndex creates the specified index.
// A newly created index’s initial state is CREATING. On completion of the
// returned google.longrunning.Operation, the
// state will be READY. If the index already exists, the call will return an
// ALREADY_EXISTS status.
//
// During index creation, the process could result in an error, in which
// case the index will move to the ERROR state. The process can be recovered
// by fixing the data that caused the error, removing the index with
// delete, then
// re-creating the index with [create]
// [google.datastore.admin.v1.DatastoreAdmin.CreateIndex].
//
// Indexes with a single property cannot be created.
func (c *DatastoreAdminClient) CreateIndex(ctx context.Context, req *adminpb.CreateIndexRequest, opts ...gax.CallOption) (*CreateIndexOperation, error) {
	return c.internalClient.CreateIndex(ctx, req, opts...)
}

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

// DeleteIndex deletes an existing index.
// An index can only be deleted if it is in a READY or ERROR state. On
// successful execution of the request, the index will be in a DELETING
// state. And on completion of the
// returned google.longrunning.Operation, the
// index will be removed.
//
// During index deletion, the process could result in an error, in which
// case the index will move to the ERROR state. The process can be recovered
// by fixing the data that caused the error, followed by calling
// delete again.
func (c *DatastoreAdminClient) DeleteIndex(ctx context.Context, req *adminpb.DeleteIndexRequest, opts ...gax.CallOption) (*DeleteIndexOperation, error) {
	return c.internalClient.DeleteIndex(ctx, req, opts...)
}

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

// GetIndex gets an index.
func (c *DatastoreAdminClient) GetIndex(ctx context.Context, req *adminpb.GetIndexRequest, opts ...gax.CallOption) (*adminpb.Index, error) {
	return c.internalClient.GetIndex(ctx, req, opts...)
}

// ListIndexes lists the indexes that match the specified filters.  Datastore uses an
// eventually consistent query to fetch the list of indexes and may
// occasionally return stale results.
func (c *DatastoreAdminClient) ListIndexes(ctx context.Context, req *adminpb.ListIndexesRequest, opts ...gax.CallOption) *IndexIterator {
	return c.internalClient.ListIndexes(ctx, req, opts...)
}

// CancelOperation is a utility method from google.longrunning.Operations.
func (c *DatastoreAdminClient) CancelOperation(ctx context.Context, req *longrunningpb.CancelOperationRequest, opts ...gax.CallOption) error {
	return c.internalClient.CancelOperation(ctx, req, opts...)
}

// DeleteOperation is a utility method from google.longrunning.Operations.
func (c *DatastoreAdminClient) DeleteOperation(ctx context.Context, req *longrunningpb.DeleteOperationRequest, opts ...gax.CallOption) error {
	return c.internalClient.DeleteOperation(ctx, req, opts...)
}

// GetOperation is a utility method from google.longrunning.Operations.
func (c *DatastoreAdminClient) GetOperation(ctx context.Context, req *longrunningpb.GetOperationRequest, opts ...gax.CallOption) (*longrunningpb.Operation, error) {
	return c.internalClient.GetOperation(ctx, req, opts...)
}

// ListOperations is a utility method from google.longrunning.Operations.
func (c *DatastoreAdminClient) ListOperations(ctx context.Context, req *longrunningpb.ListOperationsRequest, opts ...gax.CallOption) *OperationIterator {
	return c.internalClient.ListOperations(ctx, req, opts...)
}

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

	// Points back to the CallOptions field of the containing DatastoreAdminClient
	CallOptions **DatastoreAdminCallOptions

	// The gRPC API client.
	datastoreAdminClient adminpb.DatastoreAdminClient

	// 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

	operationsClient longrunningpb.OperationsClient

	// The x-goog-* metadata to be sent with each request.
	xGoogHeaders []string
}

// NewDatastoreAdminClient creates a new datastore admin client based on gRPC.
// The returned client must be Closed when it is done being used to clean up its underlying connections.
//
// # Google Cloud Datastore Admin API
//
// The Datastore Admin API provides several admin services for Cloud Datastore.
//
// Concepts: Project, namespace, kind, and entity as defined in the Google Cloud
// Datastore API.
//
// Operation: An Operation represents work being performed in the background.
//
// EntityFilter: Allows specifying a subset of entities in a project. This is
// specified as a combination of kinds and namespaces (either or both of which
// may be all).
//
// Export/Import Service:
//
//	The Export/Import service provides the ability to copy all or a subset of
//	entities to/from Google Cloud Storage.
//
//	Exported data may be imported into Cloud Datastore for any Google Cloud
//	Platform project. It is not restricted to the export source project. It is
//	possible to export from one project and then import into another.
//
//	Exported data can also be loaded into Google BigQuery for analysis.
//
//	Exports and imports are performed asynchronously. An Operation resource is
//	created for each export/import. The state (including any errors encountered)
//	of the export/import may be queried via the Operation resource.
//
// Index Service:
//
//	The index service manages Cloud Datastore composite indexes.
//
//	Index creation and deletion are performed asynchronously.
//	An Operation resource is created for each such asynchronous operation.
//	The state of the operation (including any errors encountered)
//	may be queried via the Operation resource.
//
// Operation Service:
//
//	The Operations collection provides a record of actions performed for the
//	specified project (including any operations in progress). Operations are not
//	created directly but through calls on other collections or resources.
//
//	An operation that is not yet done may be cancelled. The request to cancel
//	is asynchronous and the operation may continue to run for some time after the
//	request to cancel is made.
//
//	An operation that is done may be deleted so that it is no longer listed as
//	part of the Operation collection.
//
//	ListOperations returns all pending operations, but not completed
//	operations.
//
//	Operations are created by service DatastoreAdmin, but are accessed via
//	service google.longrunning.Operations.
func NewDatastoreAdminClient(ctx context.Context, opts ...option.ClientOption) (*DatastoreAdminClient, error) {
	clientOpts := defaultDatastoreAdminGRPCClientOptions()
	if newDatastoreAdminClientHook != nil {
		hookOpts, err := newDatastoreAdminClientHook(ctx, clientHookParams{})
		if err != nil {
			return nil, err
		}
		clientOpts = append(clientOpts, hookOpts...)
	}

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

	c := &datastoreAdminGRPCClient{
		connPool:             connPool,
		datastoreAdminClient: adminpb.NewDatastoreAdminClient(connPool),
		CallOptions:          &client.CallOptions,
		operationsClient:     longrunningpb.NewOperationsClient(connPool),
	}
	c.setGoogleClientInfo()

	client.internalClient = c

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

// Connection returns a connection to the API service.
//
// Deprecated: Connections are now pooled so this method does not always
// return the same resource.
func (c *datastoreAdminGRPCClient) 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 *datastoreAdminGRPCClient) setGoogleClientInfo(keyval ...string) {
	kv := append([]string{"gl-go", gax.GoVersion}, keyval...)
	kv = append(kv, "gapic", getVersionClient(), "gax", gax.Version, "grpc", grpc.Version)
	c.xGoogHeaders = []string{
		"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 *datastoreAdminGRPCClient) Close() error {
	return c.connPool.Close()
}

// Methods, except Close, may be called concurrently. However, fields must not be modified concurrently with method calls.
type datastoreAdminRESTClient 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-* headers to be sent with each request.
	xGoogHeaders []string

	// Points back to the CallOptions field of the containing DatastoreAdminClient
	CallOptions **DatastoreAdminCallOptions
}

// NewDatastoreAdminRESTClient creates a new datastore admin rest client.
//
// # Google Cloud Datastore Admin API
//
// The Datastore Admin API provides several admin services for Cloud Datastore.
//
// Concepts: Project, namespace, kind, and entity as defined in the Google Cloud
// Datastore API.
//
// Operation: An Operation represents work being performed in the background.
//
// EntityFilter: Allows specifying a subset of entities in a project. This is
// specified as a combination of kinds and namespaces (either or both of which
// may be all).
//
// Export/Import Service:
//
//	The Export/Import service provides the ability to copy all or a subset of
//	entities to/from Google Cloud Storage.
//
//	Exported data may be imported into Cloud Datastore for any Google Cloud
//	Platform project. It is not restricted to the export source project. It is
//	possible to export from one project and then import into another.
//
//	Exported data can also be loaded into Google BigQuery for analysis.
//
//	Exports and imports are performed asynchronously. An Operation resource is
//	created for each export/import. The state (including any errors encountered)
//	of the export/import may be queried via the Operation resource.
//
// Index Service:
//
//	The index service manages Cloud Datastore composite indexes.
//
//	Index creation and deletion are performed asynchronously.
//	An Operation resource is created for each such asynchronous operation.
//	The state of the operation (including any errors encountered)
//	may be queried via the Operation resource.
//
// Operation Service:
//
//	The Operations collection provides a record of actions performed for the
//	specified project (including any operations in progress). Operations are not
//	created directly but through calls on other collections or resources.
//
//	An operation that is not yet done may be cancelled. The request to cancel
//	is asynchronous and the operation may continue to run for some time after the
//	request to cancel is made.
//
//	An operation that is done may be deleted so that it is no longer listed as
//	part of the Operation collection.
//
//	ListOperations returns all pending operations, but not completed
//	operations.
//
//	Operations are created by service DatastoreAdmin, but are accessed via
//	service google.longrunning.Operations.
func NewDatastoreAdminRESTClient(ctx context.Context, opts ...option.ClientOption) (*DatastoreAdminClient, error) {
	clientOpts := append(defaultDatastoreAdminRESTClientOptions(), opts...)
	httpClient, endpoint, err := httptransport.NewClient(ctx, clientOpts...)
	if err != nil {
		return nil, err
	}

	callOpts := defaultDatastoreAdminRESTCallOptions()
	c := &datastoreAdminRESTClient{
		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 &DatastoreAdminClient{internalClient: c, CallOptions: callOpts}, nil
}

func defaultDatastoreAdminRESTClientOptions() []option.ClientOption {
	return []option.ClientOption{
		internaloption.WithDefaultEndpoint("https://datastore.googleapis.com"),
		internaloption.WithDefaultEndpointTemplate("https://datastore.UNIVERSE_DOMAIN"),
		internaloption.WithDefaultMTLSEndpoint("https://datastore.mtls.googleapis.com"),
		internaloption.WithDefaultUniverseDomain("googleapis.com"),
		internaloption.WithDefaultAudience("https://datastore.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 *datastoreAdminRESTClient) setGoogleClientInfo(keyval ...string) {
	kv := append([]string{"gl-go", gax.GoVersion}, keyval...)
	kv = append(kv, "gapic", getVersionClient(), "gax", gax.Version, "rest", "UNKNOWN")
	c.xGoogHeaders = []string{
		"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 *datastoreAdminRESTClient) Close() error {
	// Replace httpClient with nil to force cleanup.
	c.httpClient = nil
	return nil
}

// Connection returns a connection to the API service.
//
// Deprecated: This method always returns nil.
func (c *datastoreAdminRESTClient) Connection() *grpc.ClientConn {
	return nil
}
func (c *datastoreAdminGRPCClient) ExportEntities(ctx context.Context, req *adminpb.ExportEntitiesRequest, opts ...gax.CallOption) (*ExportEntitiesOperation, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "project_id", url.QueryEscape(req.GetProjectId()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).ExportEntities[0:len((*c.CallOptions).ExportEntities):len((*c.CallOptions).ExportEntities)], opts...)
	var resp *longrunningpb.Operation
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.datastoreAdminClient.ExportEntities(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return &ExportEntitiesOperation{
		lro: longrunning.InternalNewOperation(*c.LROClient, resp),
	}, nil
}

func (c *datastoreAdminGRPCClient) ImportEntities(ctx context.Context, req *adminpb.ImportEntitiesRequest, opts ...gax.CallOption) (*ImportEntitiesOperation, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "project_id", url.QueryEscape(req.GetProjectId()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).ImportEntities[0:len((*c.CallOptions).ImportEntities):len((*c.CallOptions).ImportEntities)], opts...)
	var resp *longrunningpb.Operation
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.datastoreAdminClient.ImportEntities(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return &ImportEntitiesOperation{
		lro: longrunning.InternalNewOperation(*c.LROClient, resp),
	}, nil
}

func (c *datastoreAdminGRPCClient) CreateIndex(ctx context.Context, req *adminpb.CreateIndexRequest, opts ...gax.CallOption) (*CreateIndexOperation, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "project_id", url.QueryEscape(req.GetProjectId()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).CreateIndex[0:len((*c.CallOptions).CreateIndex):len((*c.CallOptions).CreateIndex)], opts...)
	var resp *longrunningpb.Operation
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.datastoreAdminClient.CreateIndex(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return &CreateIndexOperation{
		lro: longrunning.InternalNewOperation(*c.LROClient, resp),
	}, nil
}

func (c *datastoreAdminGRPCClient) DeleteIndex(ctx context.Context, req *adminpb.DeleteIndexRequest, opts ...gax.CallOption) (*DeleteIndexOperation, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v&%s=%v", "project_id", url.QueryEscape(req.GetProjectId()), "index_id", url.QueryEscape(req.GetIndexId()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).DeleteIndex[0:len((*c.CallOptions).DeleteIndex):len((*c.CallOptions).DeleteIndex)], opts...)
	var resp *longrunningpb.Operation
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.datastoreAdminClient.DeleteIndex(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return &DeleteIndexOperation{
		lro: longrunning.InternalNewOperation(*c.LROClient, resp),
	}, nil
}

func (c *datastoreAdminGRPCClient) GetIndex(ctx context.Context, req *adminpb.GetIndexRequest, opts ...gax.CallOption) (*adminpb.Index, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v&%s=%v", "project_id", url.QueryEscape(req.GetProjectId()), "index_id", url.QueryEscape(req.GetIndexId()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).GetIndex[0:len((*c.CallOptions).GetIndex):len((*c.CallOptions).GetIndex)], opts...)
	var resp *adminpb.Index
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.datastoreAdminClient.GetIndex(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *datastoreAdminGRPCClient) ListIndexes(ctx context.Context, req *adminpb.ListIndexesRequest, opts ...gax.CallOption) *IndexIterator {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "project_id", url.QueryEscape(req.GetProjectId()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).ListIndexes[0:len((*c.CallOptions).ListIndexes):len((*c.CallOptions).ListIndexes)], opts...)
	it := &IndexIterator{}
	req = proto.Clone(req).(*adminpb.ListIndexesRequest)
	it.InternalFetch = func(pageSize int, pageToken string) ([]*adminpb.Index, string, error) {
		resp := &adminpb.ListIndexesResponse{}
		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.datastoreAdminClient.ListIndexes(ctx, req, settings.GRPC...)
			return err
		}, opts...)
		if err != nil {
			return nil, "", err
		}

		it.Response = resp
		return resp.GetIndexes(), 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 *datastoreAdminGRPCClient) CancelOperation(ctx context.Context, req *longrunningpb.CancelOperationRequest, opts ...gax.CallOption) error {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).CancelOperation[0:len((*c.CallOptions).CancelOperation):len((*c.CallOptions).CancelOperation)], opts...)
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		_, err = c.operationsClient.CancelOperation(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	return err
}

func (c *datastoreAdminGRPCClient) DeleteOperation(ctx context.Context, req *longrunningpb.DeleteOperationRequest, opts ...gax.CallOption) error {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).DeleteOperation[0:len((*c.CallOptions).DeleteOperation):len((*c.CallOptions).DeleteOperation)], opts...)
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		_, err = c.operationsClient.DeleteOperation(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	return err
}

func (c *datastoreAdminGRPCClient) GetOperation(ctx context.Context, req *longrunningpb.GetOperationRequest, opts ...gax.CallOption) (*longrunningpb.Operation, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).GetOperation[0:len((*c.CallOptions).GetOperation):len((*c.CallOptions).GetOperation)], opts...)
	var resp *longrunningpb.Operation
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.operationsClient.GetOperation(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *datastoreAdminGRPCClient) ListOperations(ctx context.Context, req *longrunningpb.ListOperationsRequest, opts ...gax.CallOption) *OperationIterator {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).ListOperations[0:len((*c.CallOptions).ListOperations):len((*c.CallOptions).ListOperations)], opts...)
	it := &OperationIterator{}
	req = proto.Clone(req).(*longrunningpb.ListOperationsRequest)
	it.InternalFetch = func(pageSize int, pageToken string) ([]*longrunningpb.Operation, string, error) {
		resp := &longrunningpb.ListOperationsResponse{}
		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.operationsClient.ListOperations(ctx, req, settings.GRPC...)
			return err
		}, opts...)
		if err != nil {
			return nil, "", err
		}

		it.Response = resp
		return resp.GetOperations(), 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
}

// ExportEntities exports a copy of all or a subset of entities from Google Cloud Datastore
// to another storage system, such as Google Cloud Storage. Recent updates to
// entities may not be reflected in the export. The export occurs in the
// background and its progress can be monitored and managed via the
// Operation resource that is created. The output of an export may only be
// used once the associated operation is done. If an export operation is
// cancelled before completion it may leave partial data behind in Google
// Cloud Storage.
func (c *datastoreAdminRESTClient) ExportEntities(ctx context.Context, req *adminpb.ExportEntitiesRequest, opts ...gax.CallOption) (*ExportEntitiesOperation, 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("/v1/projects/%v:export", req.GetProjectId())

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

	baseUrl.RawQuery = params.Encode()

	// Build HTTP headers from client and context metadata.
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "project_id", url.QueryEscape(req.GetProjectId()))}

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

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

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

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

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

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

	override := fmt.Sprintf("/v1/%s", resp.GetName())
	return &ExportEntitiesOperation{
		lro:      longrunning.InternalNewOperation(*c.LROClient, resp),
		pollPath: override,
	}, nil
}

// ImportEntities imports entities into Google Cloud Datastore. Existing entities with the
// same key are overwritten. The import occurs in the background and its
// progress can be monitored and managed via the Operation resource that is
// created. If an ImportEntities operation is cancelled, it is possible
// that a subset of the data has already been imported to Cloud Datastore.
func (c *datastoreAdminRESTClient) ImportEntities(ctx context.Context, req *adminpb.ImportEntitiesRequest, opts ...gax.CallOption) (*ImportEntitiesOperation, 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("/v1/projects/%v:import", req.GetProjectId())

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

	baseUrl.RawQuery = params.Encode()

	// Build HTTP headers from client and context metadata.
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "project_id", url.QueryEscape(req.GetProjectId()))}

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

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

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

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

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

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

	override := fmt.Sprintf("/v1/%s", resp.GetName())
	return &ImportEntitiesOperation{
		lro:      longrunning.InternalNewOperation(*c.LROClient, resp),
		pollPath: override,
	}, nil
}

// CreateIndex creates the specified index.
// A newly created index’s initial state is CREATING. On completion of the
// returned google.longrunning.Operation, the
// state will be READY. If the index already exists, the call will return an
// ALREADY_EXISTS status.
//
// During index creation, the process could result in an error, in which
// case the index will move to the ERROR state. The process can be recovered
// by fixing the data that caused the error, removing the index with
// delete, then
// re-creating the index with [create]
// [google.datastore.admin.v1.DatastoreAdmin.CreateIndex].
//
// Indexes with a single property cannot be created.
func (c *datastoreAdminRESTClient) CreateIndex(ctx context.Context, req *adminpb.CreateIndexRequest, opts ...gax.CallOption) (*CreateIndexOperation, error) {
	m := protojson.MarshalOptions{AllowPartial: true, UseEnumNumbers: true}
	body := req.GetIndex()
	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("/v1/projects/%v/indexes", req.GetProjectId())

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

	baseUrl.RawQuery = params.Encode()

	// Build HTTP headers from client and context metadata.
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "project_id", url.QueryEscape(req.GetProjectId()))}

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

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

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

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

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

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

	override := fmt.Sprintf("/v1/%s", resp.GetName())
	return &CreateIndexOperation{
		lro:      longrunning.InternalNewOperation(*c.LROClient, resp),
		pollPath: override,
	}, nil
}

// DeleteIndex deletes an existing index.
// An index can only be deleted if it is in a READY or ERROR state. On
// successful execution of the request, the index will be in a DELETING
// state. And on completion of the
// returned google.longrunning.Operation, the
// index will be removed.
//
// During index deletion, the process could result in an error, in which
// case the index will move to the ERROR state. The process can be recovered
// by fixing the data that caused the error, followed by calling
// delete again.
func (c *datastoreAdminRESTClient) DeleteIndex(ctx context.Context, req *adminpb.DeleteIndexRequest, opts ...gax.CallOption) (*DeleteIndexOperation, error) {
	baseUrl, err := url.Parse(c.endpoint)
	if err != nil {
		return nil, err
	}
	baseUrl.Path += fmt.Sprintf("/v1/projects/%v/indexes/%v", req.GetProjectId(), req.GetIndexId())

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

	baseUrl.RawQuery = params.Encode()

	// Build HTTP headers from client and context metadata.
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v&%s=%v", "project_id", url.QueryEscape(req.GetProjectId()), "index_id", url.QueryEscape(req.GetIndexId()))}

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

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

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

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

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

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

	override := fmt.Sprintf("/v1/%s", resp.GetName())
	return &DeleteIndexOperation{
		lro:      longrunning.InternalNewOperation(*c.LROClient, resp),
		pollPath: override,
	}, nil
}

// GetIndex gets an index.
func (c *datastoreAdminRESTClient) GetIndex(ctx context.Context, req *adminpb.GetIndexRequest, opts ...gax.CallOption) (*adminpb.Index, error) {
	baseUrl, err := url.Parse(c.endpoint)
	if err != nil {
		return nil, err
	}
	baseUrl.Path += fmt.Sprintf("/v1/projects/%v/indexes/%v", req.GetProjectId(), req.GetIndexId())

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

	baseUrl.RawQuery = params.Encode()

	// Build HTTP headers from client and context metadata.
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v&%s=%v", "project_id", url.QueryEscape(req.GetProjectId()), "index_id", url.QueryEscape(req.GetIndexId()))}

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

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

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

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

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

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

// ListIndexes lists the indexes that match the specified filters.  Datastore uses an
// eventually consistent query to fetch the list of indexes and may
// occasionally return stale results.
func (c *datastoreAdminRESTClient) ListIndexes(ctx context.Context, req *adminpb.ListIndexesRequest, opts ...gax.CallOption) *IndexIterator {
	it := &IndexIterator{}
	req = proto.Clone(req).(*adminpb.ListIndexesRequest)
	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	it.InternalFetch = func(pageSize int, pageToken string) ([]*adminpb.Index, string, error) {
		resp := &adminpb.ListIndexesResponse{}
		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("/v1/projects/%v/indexes", req.GetProjectId())

		params := url.Values{}
		params.Add("$alt", "json;enum-encoding=int")
		if req.GetFilter() != "" {
			params.Add("filter", fmt.Sprintf("%v", req.GetFilter()))
		}
		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.
		hds := append(c.xGoogHeaders, "Content-Type", "application/json")
		headers := gax.BuildHeaders(ctx, hds...)
		e := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
			if settings.Path != "" {
				baseUrl.Path = settings.Path
			}
			httpReq, err := http.NewRequest("GET", baseUrl.String(), nil)
			if err != nil {
				return err
			}
			httpReq.Header = headers

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

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

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

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

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

// CancelOperation is a utility method from google.longrunning.Operations.
func (c *datastoreAdminRESTClient) CancelOperation(ctx context.Context, req *longrunningpb.CancelOperationRequest, opts ...gax.CallOption) error {
	baseUrl, err := url.Parse(c.endpoint)
	if err != nil {
		return err
	}
	baseUrl.Path += fmt.Sprintf("/v1/%v:cancel", req.GetName())

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

	baseUrl.RawQuery = params.Encode()

	// Build HTTP headers from client and context metadata.
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName()))}

	hds = append(c.xGoogHeaders, hds...)
	hds = append(hds, "Content-Type", "application/json")
	headers := gax.BuildHeaders(ctx, hds...)
	return 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(), 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()

		// Returns nil if there is no error, otherwise wraps
		// the response code and body into a non-nil error
		return googleapi.CheckResponse(httpRsp)
	}, opts...)
}

// DeleteOperation is a utility method from google.longrunning.Operations.
func (c *datastoreAdminRESTClient) DeleteOperation(ctx context.Context, req *longrunningpb.DeleteOperationRequest, opts ...gax.CallOption) error {
	baseUrl, err := url.Parse(c.endpoint)
	if err != nil {
		return err
	}
	baseUrl.Path += fmt.Sprintf("/v1/%v", req.GetName())

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

	baseUrl.RawQuery = params.Encode()

	// Build HTTP headers from client and context metadata.
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName()))}

	hds = append(c.xGoogHeaders, hds...)
	hds = append(hds, "Content-Type", "application/json")
	headers := gax.BuildHeaders(ctx, hds...)
	return 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()

		// Returns nil if there is no error, otherwise wraps
		// the response code and body into a non-nil error
		return googleapi.CheckResponse(httpRsp)
	}, opts...)
}

// GetOperation is a utility method from google.longrunning.Operations.
func (c *datastoreAdminRESTClient) GetOperation(ctx context.Context, req *longrunningpb.GetOperationRequest, opts ...gax.CallOption) (*longrunningpb.Operation, error) {
	baseUrl, err := url.Parse(c.endpoint)
	if err != nil {
		return nil, err
	}
	baseUrl.Path += fmt.Sprintf("/v1/%v", req.GetName())

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

	baseUrl.RawQuery = params.Encode()

	// Build HTTP headers from client and context metadata.
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName()))}

	hds = append(c.xGoogHeaders, hds...)
	hds = append(hds, "Content-Type", "application/json")
	headers := gax.BuildHeaders(ctx, hds...)
	opts = append((*c.CallOptions).GetOperation[0:len((*c.CallOptions).GetOperation):len((*c.CallOptions).GetOperation)], opts...)
	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("GET", baseUrl.String(), nil)
		if err != nil {
			return err
		}
		httpReq = httpReq.WithContext(ctx)
		httpReq.Header = headers

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

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

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

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

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

// ListOperations is a utility method from google.longrunning.Operations.
func (c *datastoreAdminRESTClient) ListOperations(ctx context.Context, req *longrunningpb.ListOperationsRequest, opts ...gax.CallOption) *OperationIterator {
	it := &OperationIterator{}
	req = proto.Clone(req).(*longrunningpb.ListOperationsRequest)
	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	it.InternalFetch = func(pageSize int, pageToken string) ([]*longrunningpb.Operation, string, error) {
		resp := &longrunningpb.ListOperationsResponse{}
		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("/v1/%v/operations", req.GetName())

		params := url.Values{}
		params.Add("$alt", "json;enum-encoding=int")
		if req.GetFilter() != "" {
			params.Add("filter", fmt.Sprintf("%v", req.GetFilter()))
		}
		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.
		hds := append(c.xGoogHeaders, "Content-Type", "application/json")
		headers := gax.BuildHeaders(ctx, hds...)
		e := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
			if settings.Path != "" {
				baseUrl.Path = settings.Path
			}
			httpReq, err := http.NewRequest("GET", baseUrl.String(), nil)
			if err != nil {
				return err
			}
			httpReq.Header = headers

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

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

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

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

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

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

// CreateIndexOperation returns a new CreateIndexOperation from a given name.
// The name must be that of a previously created CreateIndexOperation, possibly from a different process.
func (c *datastoreAdminRESTClient) CreateIndexOperation(name string) *CreateIndexOperation {
	override := fmt.Sprintf("/v1/%s", name)
	return &CreateIndexOperation{
		lro:      longrunning.InternalNewOperation(*c.LROClient, &longrunningpb.Operation{Name: name}),
		pollPath: override,
	}
}

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

// DeleteIndexOperation returns a new DeleteIndexOperation from a given name.
// The name must be that of a previously created DeleteIndexOperation, possibly from a different process.
func (c *datastoreAdminRESTClient) DeleteIndexOperation(name string) *DeleteIndexOperation {
	override := fmt.Sprintf("/v1/%s", name)
	return &DeleteIndexOperation{
		lro:      longrunning.InternalNewOperation(*c.LROClient, &longrunningpb.Operation{Name: name}),
		pollPath: override,
	}
}

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

// ExportEntitiesOperation returns a new ExportEntitiesOperation from a given name.
// The name must be that of a previously created ExportEntitiesOperation, possibly from a different process.
func (c *datastoreAdminRESTClient) ExportEntitiesOperation(name string) *ExportEntitiesOperation {
	override := fmt.Sprintf("/v1/%s", name)
	return &ExportEntitiesOperation{
		lro:      longrunning.InternalNewOperation(*c.LROClient, &longrunningpb.Operation{Name: name}),
		pollPath: override,
	}
}

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

// ImportEntitiesOperation returns a new ImportEntitiesOperation from a given name.
// The name must be that of a previously created ImportEntitiesOperation, possibly from a different process.
func (c *datastoreAdminRESTClient) ImportEntitiesOperation(name string) *ImportEntitiesOperation {
	override := fmt.Sprintf("/v1/%s", name)
	return &ImportEntitiesOperation{
		lro:      longrunning.InternalNewOperation(*c.LROClient, &longrunningpb.Operation{Name: name}),
		pollPath: override,
	}
}