// Copyright 2025 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 datapolicies

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

	datapoliciespb "cloud.google.com/go/bigquery/datapolicies/apiv2beta1/datapoliciespb"
	iampb "cloud.google.com/go/iam/apiv1/iampb"
	gax "github.com/googleapis/gax-go/v2"
	"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 newDataPolicyClientHook clientHook

// DataPolicyCallOptions contains the retry settings for each method of DataPolicyClient.
type DataPolicyCallOptions struct {
	CreateDataPolicy   []gax.CallOption
	AddGrantees        []gax.CallOption
	RemoveGrantees     []gax.CallOption
	UpdateDataPolicy   []gax.CallOption
	DeleteDataPolicy   []gax.CallOption
	GetDataPolicy      []gax.CallOption
	ListDataPolicies   []gax.CallOption
	GetIamPolicy       []gax.CallOption
	SetIamPolicy       []gax.CallOption
	TestIamPermissions []gax.CallOption
}

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

func defaultDataPolicyCallOptions() *DataPolicyCallOptions {
	return &DataPolicyCallOptions{
		CreateDataPolicy: []gax.CallOption{
			gax.WithTimeout(64000 * time.Millisecond),
			gax.WithRetry(func() gax.Retryer {
				return gax.OnCodes([]codes.Code{
					codes.DeadlineExceeded,
					codes.Unavailable,
					codes.ResourceExhausted,
				}, gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        60000 * time.Millisecond,
					Multiplier: 1.30,
				})
			}),
		},
		AddGrantees: []gax.CallOption{
			gax.WithTimeout(64000 * time.Millisecond),
			gax.WithRetry(func() gax.Retryer {
				return gax.OnCodes([]codes.Code{
					codes.DeadlineExceeded,
					codes.Unavailable,
					codes.ResourceExhausted,
				}, gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        60000 * time.Millisecond,
					Multiplier: 1.30,
				})
			}),
		},
		RemoveGrantees: []gax.CallOption{
			gax.WithTimeout(64000 * time.Millisecond),
			gax.WithRetry(func() gax.Retryer {
				return gax.OnCodes([]codes.Code{
					codes.DeadlineExceeded,
					codes.Unavailable,
					codes.ResourceExhausted,
				}, gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        60000 * time.Millisecond,
					Multiplier: 1.30,
				})
			}),
		},
		UpdateDataPolicy: []gax.CallOption{
			gax.WithTimeout(64000 * time.Millisecond),
			gax.WithRetry(func() gax.Retryer {
				return gax.OnCodes([]codes.Code{
					codes.DeadlineExceeded,
					codes.Unavailable,
					codes.ResourceExhausted,
				}, gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        60000 * time.Millisecond,
					Multiplier: 1.30,
				})
			}),
		},
		DeleteDataPolicy: []gax.CallOption{
			gax.WithTimeout(64000 * time.Millisecond),
			gax.WithRetry(func() gax.Retryer {
				return gax.OnCodes([]codes.Code{
					codes.DeadlineExceeded,
					codes.Unavailable,
					codes.ResourceExhausted,
				}, gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        60000 * time.Millisecond,
					Multiplier: 1.30,
				})
			}),
		},
		GetDataPolicy: []gax.CallOption{
			gax.WithTimeout(64000 * time.Millisecond),
			gax.WithRetry(func() gax.Retryer {
				return gax.OnCodes([]codes.Code{
					codes.DeadlineExceeded,
					codes.Unavailable,
					codes.ResourceExhausted,
				}, gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        60000 * time.Millisecond,
					Multiplier: 1.30,
				})
			}),
		},
		ListDataPolicies: []gax.CallOption{
			gax.WithTimeout(64000 * time.Millisecond),
			gax.WithRetry(func() gax.Retryer {
				return gax.OnCodes([]codes.Code{
					codes.DeadlineExceeded,
					codes.Unavailable,
					codes.ResourceExhausted,
				}, gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        60000 * time.Millisecond,
					Multiplier: 1.30,
				})
			}),
		},
		GetIamPolicy: []gax.CallOption{
			gax.WithTimeout(64000 * time.Millisecond),
			gax.WithRetry(func() gax.Retryer {
				return gax.OnCodes([]codes.Code{
					codes.DeadlineExceeded,
					codes.Unavailable,
					codes.ResourceExhausted,
				}, gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        60000 * time.Millisecond,
					Multiplier: 1.30,
				})
			}),
		},
		SetIamPolicy: []gax.CallOption{
			gax.WithTimeout(64000 * time.Millisecond),
			gax.WithRetry(func() gax.Retryer {
				return gax.OnCodes([]codes.Code{
					codes.DeadlineExceeded,
					codes.Unavailable,
					codes.ResourceExhausted,
				}, gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        60000 * time.Millisecond,
					Multiplier: 1.30,
				})
			}),
		},
		TestIamPermissions: []gax.CallOption{
			gax.WithTimeout(64000 * time.Millisecond),
			gax.WithRetry(func() gax.Retryer {
				return gax.OnCodes([]codes.Code{
					codes.DeadlineExceeded,
					codes.Unavailable,
					codes.ResourceExhausted,
				}, gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        60000 * time.Millisecond,
					Multiplier: 1.30,
				})
			}),
		},
	}
}

func defaultDataPolicyRESTCallOptions() *DataPolicyCallOptions {
	return &DataPolicyCallOptions{
		CreateDataPolicy: []gax.CallOption{
			gax.WithTimeout(64000 * time.Millisecond),
			gax.WithRetry(func() gax.Retryer {
				return gax.OnHTTPCodes(gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        60000 * time.Millisecond,
					Multiplier: 1.30,
				},
					http.StatusGatewayTimeout,
					http.StatusServiceUnavailable,
					http.StatusTooManyRequests)
			}),
		},
		AddGrantees: []gax.CallOption{
			gax.WithTimeout(64000 * time.Millisecond),
			gax.WithRetry(func() gax.Retryer {
				return gax.OnHTTPCodes(gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        60000 * time.Millisecond,
					Multiplier: 1.30,
				},
					http.StatusGatewayTimeout,
					http.StatusServiceUnavailable,
					http.StatusTooManyRequests)
			}),
		},
		RemoveGrantees: []gax.CallOption{
			gax.WithTimeout(64000 * time.Millisecond),
			gax.WithRetry(func() gax.Retryer {
				return gax.OnHTTPCodes(gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        60000 * time.Millisecond,
					Multiplier: 1.30,
				},
					http.StatusGatewayTimeout,
					http.StatusServiceUnavailable,
					http.StatusTooManyRequests)
			}),
		},
		UpdateDataPolicy: []gax.CallOption{
			gax.WithTimeout(64000 * time.Millisecond),
			gax.WithRetry(func() gax.Retryer {
				return gax.OnHTTPCodes(gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        60000 * time.Millisecond,
					Multiplier: 1.30,
				},
					http.StatusGatewayTimeout,
					http.StatusServiceUnavailable,
					http.StatusTooManyRequests)
			}),
		},
		DeleteDataPolicy: []gax.CallOption{
			gax.WithTimeout(64000 * time.Millisecond),
			gax.WithRetry(func() gax.Retryer {
				return gax.OnHTTPCodes(gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        60000 * time.Millisecond,
					Multiplier: 1.30,
				},
					http.StatusGatewayTimeout,
					http.StatusServiceUnavailable,
					http.StatusTooManyRequests)
			}),
		},
		GetDataPolicy: []gax.CallOption{
			gax.WithTimeout(64000 * time.Millisecond),
			gax.WithRetry(func() gax.Retryer {
				return gax.OnHTTPCodes(gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        60000 * time.Millisecond,
					Multiplier: 1.30,
				},
					http.StatusGatewayTimeout,
					http.StatusServiceUnavailable,
					http.StatusTooManyRequests)
			}),
		},
		ListDataPolicies: []gax.CallOption{
			gax.WithTimeout(64000 * time.Millisecond),
			gax.WithRetry(func() gax.Retryer {
				return gax.OnHTTPCodes(gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        60000 * time.Millisecond,
					Multiplier: 1.30,
				},
					http.StatusGatewayTimeout,
					http.StatusServiceUnavailable,
					http.StatusTooManyRequests)
			}),
		},
		GetIamPolicy: []gax.CallOption{
			gax.WithTimeout(64000 * time.Millisecond),
			gax.WithRetry(func() gax.Retryer {
				return gax.OnHTTPCodes(gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        60000 * time.Millisecond,
					Multiplier: 1.30,
				},
					http.StatusGatewayTimeout,
					http.StatusServiceUnavailable,
					http.StatusTooManyRequests)
			}),
		},
		SetIamPolicy: []gax.CallOption{
			gax.WithTimeout(64000 * time.Millisecond),
			gax.WithRetry(func() gax.Retryer {
				return gax.OnHTTPCodes(gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        60000 * time.Millisecond,
					Multiplier: 1.30,
				},
					http.StatusGatewayTimeout,
					http.StatusServiceUnavailable,
					http.StatusTooManyRequests)
			}),
		},
		TestIamPermissions: []gax.CallOption{
			gax.WithTimeout(64000 * time.Millisecond),
			gax.WithRetry(func() gax.Retryer {
				return gax.OnHTTPCodes(gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        60000 * time.Millisecond,
					Multiplier: 1.30,
				},
					http.StatusGatewayTimeout,
					http.StatusServiceUnavailable,
					http.StatusTooManyRequests)
			}),
		},
	}
}

// internalDataPolicyClient is an interface that defines the methods available from BigQuery Data Policy API.
type internalDataPolicyClient interface {
	Close() error
	setGoogleClientInfo(...string)
	Connection() *grpc.ClientConn
	CreateDataPolicy(context.Context, *datapoliciespb.CreateDataPolicyRequest, ...gax.CallOption) (*datapoliciespb.DataPolicy, error)
	AddGrantees(context.Context, *datapoliciespb.AddGranteesRequest, ...gax.CallOption) (*datapoliciespb.DataPolicy, error)
	RemoveGrantees(context.Context, *datapoliciespb.RemoveGranteesRequest, ...gax.CallOption) (*datapoliciespb.DataPolicy, error)
	UpdateDataPolicy(context.Context, *datapoliciespb.UpdateDataPolicyRequest, ...gax.CallOption) (*datapoliciespb.DataPolicy, error)
	DeleteDataPolicy(context.Context, *datapoliciespb.DeleteDataPolicyRequest, ...gax.CallOption) error
	GetDataPolicy(context.Context, *datapoliciespb.GetDataPolicyRequest, ...gax.CallOption) (*datapoliciespb.DataPolicy, error)
	ListDataPolicies(context.Context, *datapoliciespb.ListDataPoliciesRequest, ...gax.CallOption) *DataPolicyIterator
	GetIamPolicy(context.Context, *iampb.GetIamPolicyRequest, ...gax.CallOption) (*iampb.Policy, error)
	SetIamPolicy(context.Context, *iampb.SetIamPolicyRequest, ...gax.CallOption) (*iampb.Policy, error)
	TestIamPermissions(context.Context, *iampb.TestIamPermissionsRequest, ...gax.CallOption) (*iampb.TestIamPermissionsResponse, error)
}

// DataPolicyClient is a client for interacting with BigQuery Data Policy API.
// Methods, except Close, may be called concurrently. However, fields must not be modified concurrently with method calls.
//
// Data Policy Service provides APIs for managing the BigQuery Data Policy.
type DataPolicyClient struct {
	// The internal transport-dependent client.
	internalClient internalDataPolicyClient

	// The call options for this service.
	CallOptions *DataPolicyCallOptions
}

// 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 *DataPolicyClient) 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 *DataPolicyClient) 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 *DataPolicyClient) Connection() *grpc.ClientConn {
	return c.internalClient.Connection()
}

// CreateDataPolicy creates a new data policy under a project with the given data_policy_id
// (used as the display name), and data policy type.
func (c *DataPolicyClient) CreateDataPolicy(ctx context.Context, req *datapoliciespb.CreateDataPolicyRequest, opts ...gax.CallOption) (*datapoliciespb.DataPolicy, error) {
	return c.internalClient.CreateDataPolicy(ctx, req, opts...)
}

// AddGrantees adds new grantees to a data policy.
// The new grantees will be added to the existing grantees.
// If the request contains a duplicate grantee, the grantee will be ignored.
// If the request contains a grantee that already exists, the grantee will be
// ignored.
func (c *DataPolicyClient) AddGrantees(ctx context.Context, req *datapoliciespb.AddGranteesRequest, opts ...gax.CallOption) (*datapoliciespb.DataPolicy, error) {
	return c.internalClient.AddGrantees(ctx, req, opts...)
}

// RemoveGrantees removes grantees from a data policy.
// The grantees will be removed from the existing grantees.
// If the request contains a grantee that does not exist, the grantee will be
// ignored.
func (c *DataPolicyClient) RemoveGrantees(ctx context.Context, req *datapoliciespb.RemoveGranteesRequest, opts ...gax.CallOption) (*datapoliciespb.DataPolicy, error) {
	return c.internalClient.RemoveGrantees(ctx, req, opts...)
}

// UpdateDataPolicy updates the metadata for an existing data policy. The target data policy
// can be specified by the resource name.
func (c *DataPolicyClient) UpdateDataPolicy(ctx context.Context, req *datapoliciespb.UpdateDataPolicyRequest, opts ...gax.CallOption) (*datapoliciespb.DataPolicy, error) {
	return c.internalClient.UpdateDataPolicy(ctx, req, opts...)
}

// DeleteDataPolicy deletes the data policy specified by its resource name.
func (c *DataPolicyClient) DeleteDataPolicy(ctx context.Context, req *datapoliciespb.DeleteDataPolicyRequest, opts ...gax.CallOption) error {
	return c.internalClient.DeleteDataPolicy(ctx, req, opts...)
}

// GetDataPolicy gets the data policy specified by its resource name.
func (c *DataPolicyClient) GetDataPolicy(ctx context.Context, req *datapoliciespb.GetDataPolicyRequest, opts ...gax.CallOption) (*datapoliciespb.DataPolicy, error) {
	return c.internalClient.GetDataPolicy(ctx, req, opts...)
}

// ListDataPolicies list all of the data policies in the specified parent project.
func (c *DataPolicyClient) ListDataPolicies(ctx context.Context, req *datapoliciespb.ListDataPoliciesRequest, opts ...gax.CallOption) *DataPolicyIterator {
	return c.internalClient.ListDataPolicies(ctx, req, opts...)
}

// GetIamPolicy gets the IAM policy for the specified data policy.
func (c *DataPolicyClient) GetIamPolicy(ctx context.Context, req *iampb.GetIamPolicyRequest, opts ...gax.CallOption) (*iampb.Policy, error) {
	return c.internalClient.GetIamPolicy(ctx, req, opts...)
}

// SetIamPolicy sets the IAM policy for the specified data policy.
func (c *DataPolicyClient) SetIamPolicy(ctx context.Context, req *iampb.SetIamPolicyRequest, opts ...gax.CallOption) (*iampb.Policy, error) {
	return c.internalClient.SetIamPolicy(ctx, req, opts...)
}

// TestIamPermissions returns the caller’s permission on the specified data policy resource.
func (c *DataPolicyClient) TestIamPermissions(ctx context.Context, req *iampb.TestIamPermissionsRequest, opts ...gax.CallOption) (*iampb.TestIamPermissionsResponse, error) {
	return c.internalClient.TestIamPermissions(ctx, req, opts...)
}

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

	// Points back to the CallOptions field of the containing DataPolicyClient
	CallOptions **DataPolicyCallOptions

	// The gRPC API client.
	dataPolicyClient datapoliciespb.DataPolicyServiceClient

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

	logger *slog.Logger
}

// NewDataPolicyClient creates a new data policy service client based on gRPC.
// The returned client must be Closed when it is done being used to clean up its underlying connections.
//
// Data Policy Service provides APIs for managing the BigQuery Data Policy.
func NewDataPolicyClient(ctx context.Context, opts ...option.ClientOption) (*DataPolicyClient, error) {
	clientOpts := defaultDataPolicyGRPCClientOptions()
	if newDataPolicyClientHook != nil {
		hookOpts, err := newDataPolicyClientHook(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 := DataPolicyClient{CallOptions: defaultDataPolicyCallOptions()}

	c := &dataPolicyGRPCClient{
		connPool:         connPool,
		dataPolicyClient: datapoliciespb.NewDataPolicyServiceClient(connPool),
		CallOptions:      &client.CallOptions,
		logger:           internaloption.GetLogger(opts),
	}
	c.setGoogleClientInfo()

	client.internalClient = c

	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 *dataPolicyGRPCClient) 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 *dataPolicyGRPCClient) setGoogleClientInfo(keyval ...string) {
	kv := append([]string{"gl-go", gax.GoVersion}, keyval...)
	kv = append(kv, "gapic", getVersionClient(), "gax", gax.Version, "grpc", grpc.Version, "pb", protoVersion)
	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 *dataPolicyGRPCClient) Close() error {
	return c.connPool.Close()
}

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

	// The http client.
	httpClient *http.Client

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

	// Points back to the CallOptions field of the containing DataPolicyClient
	CallOptions **DataPolicyCallOptions

	logger *slog.Logger
}

// NewDataPolicyRESTClient creates a new data policy service rest client.
//
// Data Policy Service provides APIs for managing the BigQuery Data Policy.
func NewDataPolicyRESTClient(ctx context.Context, opts ...option.ClientOption) (*DataPolicyClient, error) {
	clientOpts := append(defaultDataPolicyRESTClientOptions(), opts...)
	httpClient, endpoint, err := httptransport.NewClient(ctx, clientOpts...)
	if err != nil {
		return nil, err
	}

	callOpts := defaultDataPolicyRESTCallOptions()
	c := &dataPolicyRESTClient{
		endpoint:    endpoint,
		httpClient:  httpClient,
		CallOptions: &callOpts,
		logger:      internaloption.GetLogger(opts),
	}
	c.setGoogleClientInfo()

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

func defaultDataPolicyRESTClientOptions() []option.ClientOption {
	return []option.ClientOption{
		internaloption.WithDefaultEndpoint("https://bigquerydatapolicy.googleapis.com"),
		internaloption.WithDefaultEndpointTemplate("https://bigquerydatapolicy.UNIVERSE_DOMAIN"),
		internaloption.WithDefaultMTLSEndpoint("https://bigquerydatapolicy.mtls.googleapis.com"),
		internaloption.WithDefaultUniverseDomain("googleapis.com"),
		internaloption.WithDefaultAudience("https://bigquerydatapolicy.googleapis.com/"),
		internaloption.WithDefaultScopes(DefaultAuthScopes()...),
		internaloption.EnableNewAuthLibrary(),
	}
}

// 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 *dataPolicyRESTClient) setGoogleClientInfo(keyval ...string) {
	kv := append([]string{"gl-go", gax.GoVersion}, keyval...)
	kv = append(kv, "gapic", getVersionClient(), "gax", gax.Version, "rest", "UNKNOWN", "pb", protoVersion)
	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 *dataPolicyRESTClient) 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 *dataPolicyRESTClient) Connection() *grpc.ClientConn {
	return nil
}
func (c *dataPolicyGRPCClient) CreateDataPolicy(ctx context.Context, req *datapoliciespb.CreateDataPolicyRequest, opts ...gax.CallOption) (*datapoliciespb.DataPolicy, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "parent", url.QueryEscape(req.GetParent()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).CreateDataPolicy[0:len((*c.CallOptions).CreateDataPolicy):len((*c.CallOptions).CreateDataPolicy)], opts...)
	var resp *datapoliciespb.DataPolicy
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = executeRPC(ctx, c.dataPolicyClient.CreateDataPolicy, req, settings.GRPC, c.logger, "CreateDataPolicy")
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *dataPolicyGRPCClient) AddGrantees(ctx context.Context, req *datapoliciespb.AddGranteesRequest, opts ...gax.CallOption) (*datapoliciespb.DataPolicy, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "data_policy", url.QueryEscape(req.GetDataPolicy()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).AddGrantees[0:len((*c.CallOptions).AddGrantees):len((*c.CallOptions).AddGrantees)], opts...)
	var resp *datapoliciespb.DataPolicy
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = executeRPC(ctx, c.dataPolicyClient.AddGrantees, req, settings.GRPC, c.logger, "AddGrantees")
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *dataPolicyGRPCClient) RemoveGrantees(ctx context.Context, req *datapoliciespb.RemoveGranteesRequest, opts ...gax.CallOption) (*datapoliciespb.DataPolicy, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "data_policy", url.QueryEscape(req.GetDataPolicy()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).RemoveGrantees[0:len((*c.CallOptions).RemoveGrantees):len((*c.CallOptions).RemoveGrantees)], opts...)
	var resp *datapoliciespb.DataPolicy
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = executeRPC(ctx, c.dataPolicyClient.RemoveGrantees, req, settings.GRPC, c.logger, "RemoveGrantees")
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *dataPolicyGRPCClient) UpdateDataPolicy(ctx context.Context, req *datapoliciespb.UpdateDataPolicyRequest, opts ...gax.CallOption) (*datapoliciespb.DataPolicy, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "data_policy.name", url.QueryEscape(req.GetDataPolicy().GetName()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).UpdateDataPolicy[0:len((*c.CallOptions).UpdateDataPolicy):len((*c.CallOptions).UpdateDataPolicy)], opts...)
	var resp *datapoliciespb.DataPolicy
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = executeRPC(ctx, c.dataPolicyClient.UpdateDataPolicy, req, settings.GRPC, c.logger, "UpdateDataPolicy")
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *dataPolicyGRPCClient) DeleteDataPolicy(ctx context.Context, req *datapoliciespb.DeleteDataPolicyRequest, 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).DeleteDataPolicy[0:len((*c.CallOptions).DeleteDataPolicy):len((*c.CallOptions).DeleteDataPolicy)], opts...)
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		_, err = executeRPC(ctx, c.dataPolicyClient.DeleteDataPolicy, req, settings.GRPC, c.logger, "DeleteDataPolicy")
		return err
	}, opts...)
	return err
}

func (c *dataPolicyGRPCClient) GetDataPolicy(ctx context.Context, req *datapoliciespb.GetDataPolicyRequest, opts ...gax.CallOption) (*datapoliciespb.DataPolicy, 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).GetDataPolicy[0:len((*c.CallOptions).GetDataPolicy):len((*c.CallOptions).GetDataPolicy)], opts...)
	var resp *datapoliciespb.DataPolicy
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = executeRPC(ctx, c.dataPolicyClient.GetDataPolicy, req, settings.GRPC, c.logger, "GetDataPolicy")
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *dataPolicyGRPCClient) ListDataPolicies(ctx context.Context, req *datapoliciespb.ListDataPoliciesRequest, opts ...gax.CallOption) *DataPolicyIterator {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "parent", url.QueryEscape(req.GetParent()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).ListDataPolicies[0:len((*c.CallOptions).ListDataPolicies):len((*c.CallOptions).ListDataPolicies)], opts...)
	it := &DataPolicyIterator{}
	req = proto.Clone(req).(*datapoliciespb.ListDataPoliciesRequest)
	it.InternalFetch = func(pageSize int, pageToken string) ([]*datapoliciespb.DataPolicy, string, error) {
		resp := &datapoliciespb.ListDataPoliciesResponse{}
		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 = executeRPC(ctx, c.dataPolicyClient.ListDataPolicies, req, settings.GRPC, c.logger, "ListDataPolicies")
			return err
		}, opts...)
		if err != nil {
			return nil, "", err
		}

		it.Response = resp
		return resp.GetDataPolicies(), 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 *dataPolicyGRPCClient) GetIamPolicy(ctx context.Context, req *iampb.GetIamPolicyRequest, opts ...gax.CallOption) (*iampb.Policy, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "resource", url.QueryEscape(req.GetResource()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).GetIamPolicy[0:len((*c.CallOptions).GetIamPolicy):len((*c.CallOptions).GetIamPolicy)], opts...)
	var resp *iampb.Policy
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = executeRPC(ctx, c.dataPolicyClient.GetIamPolicy, req, settings.GRPC, c.logger, "GetIamPolicy")
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *dataPolicyGRPCClient) SetIamPolicy(ctx context.Context, req *iampb.SetIamPolicyRequest, opts ...gax.CallOption) (*iampb.Policy, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "resource", url.QueryEscape(req.GetResource()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).SetIamPolicy[0:len((*c.CallOptions).SetIamPolicy):len((*c.CallOptions).SetIamPolicy)], opts...)
	var resp *iampb.Policy
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = executeRPC(ctx, c.dataPolicyClient.SetIamPolicy, req, settings.GRPC, c.logger, "SetIamPolicy")
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *dataPolicyGRPCClient) TestIamPermissions(ctx context.Context, req *iampb.TestIamPermissionsRequest, opts ...gax.CallOption) (*iampb.TestIamPermissionsResponse, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "resource", url.QueryEscape(req.GetResource()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).TestIamPermissions[0:len((*c.CallOptions).TestIamPermissions):len((*c.CallOptions).TestIamPermissions)], opts...)
	var resp *iampb.TestIamPermissionsResponse
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = executeRPC(ctx, c.dataPolicyClient.TestIamPermissions, req, settings.GRPC, c.logger, "TestIamPermissions")
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

// CreateDataPolicy creates a new data policy under a project with the given data_policy_id
// (used as the display name), and data policy type.
func (c *dataPolicyRESTClient) CreateDataPolicy(ctx context.Context, req *datapoliciespb.CreateDataPolicyRequest, opts ...gax.CallOption) (*datapoliciespb.DataPolicy, 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("/v2beta1/%v/dataPolicies", req.GetParent())

	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", "parent", url.QueryEscape(req.GetParent()))}

	hds = append(c.xGoogHeaders, hds...)
	hds = append(hds, "Content-Type", "application/json")
	headers := gax.BuildHeaders(ctx, hds...)
	opts = append((*c.CallOptions).CreateDataPolicy[0:len((*c.CallOptions).CreateDataPolicy):len((*c.CallOptions).CreateDataPolicy)], opts...)
	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	resp := &datapoliciespb.DataPolicy{}
	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

		buf, err := executeHTTPRequest(ctx, c.httpClient, httpReq, c.logger, jsonReq, "CreateDataPolicy")
		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
}

// AddGrantees adds new grantees to a data policy.
// The new grantees will be added to the existing grantees.
// If the request contains a duplicate grantee, the grantee will be ignored.
// If the request contains a grantee that already exists, the grantee will be
// ignored.
func (c *dataPolicyRESTClient) AddGrantees(ctx context.Context, req *datapoliciespb.AddGranteesRequest, opts ...gax.CallOption) (*datapoliciespb.DataPolicy, 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("/v2beta1/%v:addGrantees", req.GetDataPolicy())

	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", "data_policy", url.QueryEscape(req.GetDataPolicy()))}

	hds = append(c.xGoogHeaders, hds...)
	hds = append(hds, "Content-Type", "application/json")
	headers := gax.BuildHeaders(ctx, hds...)
	opts = append((*c.CallOptions).AddGrantees[0:len((*c.CallOptions).AddGrantees):len((*c.CallOptions).AddGrantees)], opts...)
	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	resp := &datapoliciespb.DataPolicy{}
	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

		buf, err := executeHTTPRequest(ctx, c.httpClient, httpReq, c.logger, jsonReq, "AddGrantees")
		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
}

// RemoveGrantees removes grantees from a data policy.
// The grantees will be removed from the existing grantees.
// If the request contains a grantee that does not exist, the grantee will be
// ignored.
func (c *dataPolicyRESTClient) RemoveGrantees(ctx context.Context, req *datapoliciespb.RemoveGranteesRequest, opts ...gax.CallOption) (*datapoliciespb.DataPolicy, 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("/v2beta1/%v:removeGrantees", req.GetDataPolicy())

	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", "data_policy", url.QueryEscape(req.GetDataPolicy()))}

	hds = append(c.xGoogHeaders, hds...)
	hds = append(hds, "Content-Type", "application/json")
	headers := gax.BuildHeaders(ctx, hds...)
	opts = append((*c.CallOptions).RemoveGrantees[0:len((*c.CallOptions).RemoveGrantees):len((*c.CallOptions).RemoveGrantees)], opts...)
	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	resp := &datapoliciespb.DataPolicy{}
	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

		buf, err := executeHTTPRequest(ctx, c.httpClient, httpReq, c.logger, jsonReq, "RemoveGrantees")
		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
}

// UpdateDataPolicy updates the metadata for an existing data policy. The target data policy
// can be specified by the resource name.
func (c *dataPolicyRESTClient) UpdateDataPolicy(ctx context.Context, req *datapoliciespb.UpdateDataPolicyRequest, opts ...gax.CallOption) (*datapoliciespb.DataPolicy, error) {
	m := protojson.MarshalOptions{AllowPartial: true, UseEnumNumbers: true}
	body := req.GetDataPolicy()
	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("/v2beta1/%v", req.GetDataPolicy().GetName())

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

	baseUrl.RawQuery = params.Encode()

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

	hds = append(c.xGoogHeaders, hds...)
	hds = append(hds, "Content-Type", "application/json")
	headers := gax.BuildHeaders(ctx, hds...)
	opts = append((*c.CallOptions).UpdateDataPolicy[0:len((*c.CallOptions).UpdateDataPolicy):len((*c.CallOptions).UpdateDataPolicy)], opts...)
	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	resp := &datapoliciespb.DataPolicy{}
	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

		buf, err := executeHTTPRequest(ctx, c.httpClient, httpReq, c.logger, jsonReq, "UpdateDataPolicy")
		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
}

// DeleteDataPolicy deletes the data policy specified by its resource name.
func (c *dataPolicyRESTClient) DeleteDataPolicy(ctx context.Context, req *datapoliciespb.DeleteDataPolicyRequest, opts ...gax.CallOption) error {
	baseUrl, err := url.Parse(c.endpoint)
	if err != nil {
		return err
	}
	baseUrl.Path += fmt.Sprintf("/v2beta1/%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

		_, err = executeHTTPRequest(ctx, c.httpClient, httpReq, c.logger, nil, "DeleteDataPolicy")
		return err
	}, opts...)
}

// GetDataPolicy gets the data policy specified by its resource name.
func (c *dataPolicyRESTClient) GetDataPolicy(ctx context.Context, req *datapoliciespb.GetDataPolicyRequest, opts ...gax.CallOption) (*datapoliciespb.DataPolicy, error) {
	baseUrl, err := url.Parse(c.endpoint)
	if err != nil {
		return nil, err
	}
	baseUrl.Path += fmt.Sprintf("/v2beta1/%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).GetDataPolicy[0:len((*c.CallOptions).GetDataPolicy):len((*c.CallOptions).GetDataPolicy)], opts...)
	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	resp := &datapoliciespb.DataPolicy{}
	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

		buf, err := executeHTTPRequest(ctx, c.httpClient, httpReq, c.logger, nil, "GetDataPolicy")
		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
}

// ListDataPolicies list all of the data policies in the specified parent project.
func (c *dataPolicyRESTClient) ListDataPolicies(ctx context.Context, req *datapoliciespb.ListDataPoliciesRequest, opts ...gax.CallOption) *DataPolicyIterator {
	it := &DataPolicyIterator{}
	req = proto.Clone(req).(*datapoliciespb.ListDataPoliciesRequest)
	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	it.InternalFetch = func(pageSize int, pageToken string) ([]*datapoliciespb.DataPolicy, string, error) {
		resp := &datapoliciespb.ListDataPoliciesResponse{}
		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("/v2beta1/%v/dataPolicies", req.GetParent())

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

			buf, err := executeHTTPRequest(ctx, c.httpClient, httpReq, c.logger, nil, "ListDataPolicies")
			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.GetDataPolicies(), 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
}

// GetIamPolicy gets the IAM policy for the specified data policy.
func (c *dataPolicyRESTClient) GetIamPolicy(ctx context.Context, req *iampb.GetIamPolicyRequest, opts ...gax.CallOption) (*iampb.Policy, 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("/v2beta1/%v:getIamPolicy", req.GetResource())

	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", "resource", url.QueryEscape(req.GetResource()))}

	hds = append(c.xGoogHeaders, hds...)
	hds = append(hds, "Content-Type", "application/json")
	headers := gax.BuildHeaders(ctx, hds...)
	opts = append((*c.CallOptions).GetIamPolicy[0:len((*c.CallOptions).GetIamPolicy):len((*c.CallOptions).GetIamPolicy)], opts...)
	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	resp := &iampb.Policy{}
	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

		buf, err := executeHTTPRequest(ctx, c.httpClient, httpReq, c.logger, jsonReq, "GetIamPolicy")
		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
}

// SetIamPolicy sets the IAM policy for the specified data policy.
func (c *dataPolicyRESTClient) SetIamPolicy(ctx context.Context, req *iampb.SetIamPolicyRequest, opts ...gax.CallOption) (*iampb.Policy, 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("/v2beta1/%v:setIamPolicy", req.GetResource())

	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", "resource", url.QueryEscape(req.GetResource()))}

	hds = append(c.xGoogHeaders, hds...)
	hds = append(hds, "Content-Type", "application/json")
	headers := gax.BuildHeaders(ctx, hds...)
	opts = append((*c.CallOptions).SetIamPolicy[0:len((*c.CallOptions).SetIamPolicy):len((*c.CallOptions).SetIamPolicy)], opts...)
	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	resp := &iampb.Policy{}
	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

		buf, err := executeHTTPRequest(ctx, c.httpClient, httpReq, c.logger, jsonReq, "SetIamPolicy")
		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
}

// TestIamPermissions returns the caller’s permission on the specified data policy resource.
func (c *dataPolicyRESTClient) TestIamPermissions(ctx context.Context, req *iampb.TestIamPermissionsRequest, opts ...gax.CallOption) (*iampb.TestIamPermissionsResponse, 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("/v2beta1/%v:testIamPermissions", req.GetResource())

	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", "resource", url.QueryEscape(req.GetResource()))}

	hds = append(c.xGoogHeaders, hds...)
	hds = append(hds, "Content-Type", "application/json")
	headers := gax.BuildHeaders(ctx, hds...)
	opts = append((*c.CallOptions).TestIamPermissions[0:len((*c.CallOptions).TestIamPermissions):len((*c.CallOptions).TestIamPermissions)], opts...)
	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	resp := &iampb.TestIamPermissionsResponse{}
	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

		buf, err := executeHTTPRequest(ctx, c.httpClient, httpReq, c.logger, jsonReq, "TestIamPermissions")
		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
}
