// Copyright 2021 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 logging

import (
	"context"
	"fmt"
	"math"
	"net/url"
	"time"

	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"
	loggingpb "google.golang.org/genproto/googleapis/logging/v2"
	"google.golang.org/grpc"
	"google.golang.org/grpc/codes"
	"google.golang.org/grpc/metadata"
	"google.golang.org/protobuf/proto"
)

var newConfigClientHook clientHook

// ConfigCallOptions contains the retry settings for each method of ConfigClient.
type ConfigCallOptions struct {
	ListBuckets        []gax.CallOption
	GetBucket          []gax.CallOption
	CreateBucket       []gax.CallOption
	UpdateBucket       []gax.CallOption
	DeleteBucket       []gax.CallOption
	UndeleteBucket     []gax.CallOption
	ListViews          []gax.CallOption
	GetView            []gax.CallOption
	CreateView         []gax.CallOption
	UpdateView         []gax.CallOption
	DeleteView         []gax.CallOption
	ListSinks          []gax.CallOption
	GetSink            []gax.CallOption
	CreateSink         []gax.CallOption
	UpdateSink         []gax.CallOption
	DeleteSink         []gax.CallOption
	ListExclusions     []gax.CallOption
	GetExclusion       []gax.CallOption
	CreateExclusion    []gax.CallOption
	UpdateExclusion    []gax.CallOption
	DeleteExclusion    []gax.CallOption
	GetCmekSettings    []gax.CallOption
	UpdateCmekSettings []gax.CallOption
}

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

func defaultConfigCallOptions() *ConfigCallOptions {
	return &ConfigCallOptions{
		ListBuckets:    []gax.CallOption{},
		GetBucket:      []gax.CallOption{},
		CreateBucket:   []gax.CallOption{},
		UpdateBucket:   []gax.CallOption{},
		DeleteBucket:   []gax.CallOption{},
		UndeleteBucket: []gax.CallOption{},
		ListViews:      []gax.CallOption{},
		GetView:        []gax.CallOption{},
		CreateView:     []gax.CallOption{},
		UpdateView:     []gax.CallOption{},
		DeleteView:     []gax.CallOption{},
		ListSinks: []gax.CallOption{
			gax.WithRetry(func() gax.Retryer {
				return gax.OnCodes([]codes.Code{
					codes.DeadlineExceeded,
					codes.Internal,
					codes.Unavailable,
				}, gax.Backoff{
					Initial:    100 * time.Millisecond,
					Max:        60000 * time.Millisecond,
					Multiplier: 1.30,
				})
			}),
		},
		GetSink: []gax.CallOption{
			gax.WithRetry(func() gax.Retryer {
				return gax.OnCodes([]codes.Code{
					codes.DeadlineExceeded,
					codes.Internal,
					codes.Unavailable,
				}, gax.Backoff{
					Initial:    100 * time.Millisecond,
					Max:        60000 * time.Millisecond,
					Multiplier: 1.30,
				})
			}),
		},
		CreateSink: []gax.CallOption{},
		UpdateSink: []gax.CallOption{
			gax.WithRetry(func() gax.Retryer {
				return gax.OnCodes([]codes.Code{
					codes.DeadlineExceeded,
					codes.Internal,
					codes.Unavailable,
				}, gax.Backoff{
					Initial:    100 * time.Millisecond,
					Max:        60000 * time.Millisecond,
					Multiplier: 1.30,
				})
			}),
		},
		DeleteSink: []gax.CallOption{
			gax.WithRetry(func() gax.Retryer {
				return gax.OnCodes([]codes.Code{
					codes.DeadlineExceeded,
					codes.Internal,
					codes.Unavailable,
				}, gax.Backoff{
					Initial:    100 * time.Millisecond,
					Max:        60000 * time.Millisecond,
					Multiplier: 1.30,
				})
			}),
		},
		ListExclusions: []gax.CallOption{
			gax.WithRetry(func() gax.Retryer {
				return gax.OnCodes([]codes.Code{
					codes.DeadlineExceeded,
					codes.Internal,
					codes.Unavailable,
				}, gax.Backoff{
					Initial:    100 * time.Millisecond,
					Max:        60000 * time.Millisecond,
					Multiplier: 1.30,
				})
			}),
		},
		GetExclusion: []gax.CallOption{
			gax.WithRetry(func() gax.Retryer {
				return gax.OnCodes([]codes.Code{
					codes.DeadlineExceeded,
					codes.Internal,
					codes.Unavailable,
				}, gax.Backoff{
					Initial:    100 * time.Millisecond,
					Max:        60000 * time.Millisecond,
					Multiplier: 1.30,
				})
			}),
		},
		CreateExclusion: []gax.CallOption{},
		UpdateExclusion: []gax.CallOption{},
		DeleteExclusion: []gax.CallOption{
			gax.WithRetry(func() gax.Retryer {
				return gax.OnCodes([]codes.Code{
					codes.DeadlineExceeded,
					codes.Internal,
					codes.Unavailable,
				}, gax.Backoff{
					Initial:    100 * time.Millisecond,
					Max:        60000 * time.Millisecond,
					Multiplier: 1.30,
				})
			}),
		},
		GetCmekSettings:    []gax.CallOption{},
		UpdateCmekSettings: []gax.CallOption{},
	}
}

// internalConfigClient is an interface that defines the methods availaible from Cloud Logging API.
type internalConfigClient interface {
	Close() error
	setGoogleClientInfo(...string)
	Connection() *grpc.ClientConn
	ListBuckets(context.Context, *loggingpb.ListBucketsRequest, ...gax.CallOption) *LogBucketIterator
	GetBucket(context.Context, *loggingpb.GetBucketRequest, ...gax.CallOption) (*loggingpb.LogBucket, error)
	CreateBucket(context.Context, *loggingpb.CreateBucketRequest, ...gax.CallOption) (*loggingpb.LogBucket, error)
	UpdateBucket(context.Context, *loggingpb.UpdateBucketRequest, ...gax.CallOption) (*loggingpb.LogBucket, error)
	DeleteBucket(context.Context, *loggingpb.DeleteBucketRequest, ...gax.CallOption) error
	UndeleteBucket(context.Context, *loggingpb.UndeleteBucketRequest, ...gax.CallOption) error
	ListViews(context.Context, *loggingpb.ListViewsRequest, ...gax.CallOption) *LogViewIterator
	GetView(context.Context, *loggingpb.GetViewRequest, ...gax.CallOption) (*loggingpb.LogView, error)
	CreateView(context.Context, *loggingpb.CreateViewRequest, ...gax.CallOption) (*loggingpb.LogView, error)
	UpdateView(context.Context, *loggingpb.UpdateViewRequest, ...gax.CallOption) (*loggingpb.LogView, error)
	DeleteView(context.Context, *loggingpb.DeleteViewRequest, ...gax.CallOption) error
	ListSinks(context.Context, *loggingpb.ListSinksRequest, ...gax.CallOption) *LogSinkIterator
	GetSink(context.Context, *loggingpb.GetSinkRequest, ...gax.CallOption) (*loggingpb.LogSink, error)
	CreateSink(context.Context, *loggingpb.CreateSinkRequest, ...gax.CallOption) (*loggingpb.LogSink, error)
	UpdateSink(context.Context, *loggingpb.UpdateSinkRequest, ...gax.CallOption) (*loggingpb.LogSink, error)
	DeleteSink(context.Context, *loggingpb.DeleteSinkRequest, ...gax.CallOption) error
	ListExclusions(context.Context, *loggingpb.ListExclusionsRequest, ...gax.CallOption) *LogExclusionIterator
	GetExclusion(context.Context, *loggingpb.GetExclusionRequest, ...gax.CallOption) (*loggingpb.LogExclusion, error)
	CreateExclusion(context.Context, *loggingpb.CreateExclusionRequest, ...gax.CallOption) (*loggingpb.LogExclusion, error)
	UpdateExclusion(context.Context, *loggingpb.UpdateExclusionRequest, ...gax.CallOption) (*loggingpb.LogExclusion, error)
	DeleteExclusion(context.Context, *loggingpb.DeleteExclusionRequest, ...gax.CallOption) error
	GetCmekSettings(context.Context, *loggingpb.GetCmekSettingsRequest, ...gax.CallOption) (*loggingpb.CmekSettings, error)
	UpdateCmekSettings(context.Context, *loggingpb.UpdateCmekSettingsRequest, ...gax.CallOption) (*loggingpb.CmekSettings, error)
}

// ConfigClient is a client for interacting with Cloud Logging API.
// Methods, except Close, may be called concurrently. However, fields must not be modified concurrently with method calls.
//
// Service for configuring sinks used to route log entries.
type ConfigClient struct {
	// The internal transport-dependent client.
	internalClient internalConfigClient

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

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

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

// ListBuckets lists buckets.
func (c *ConfigClient) ListBuckets(ctx context.Context, req *loggingpb.ListBucketsRequest, opts ...gax.CallOption) *LogBucketIterator {
	return c.internalClient.ListBuckets(ctx, req, opts...)
}

// GetBucket gets a bucket.
func (c *ConfigClient) GetBucket(ctx context.Context, req *loggingpb.GetBucketRequest, opts ...gax.CallOption) (*loggingpb.LogBucket, error) {
	return c.internalClient.GetBucket(ctx, req, opts...)
}

// CreateBucket creates a bucket that can be used to store log entries. Once a bucket has
// been created, the region cannot be changed.
func (c *ConfigClient) CreateBucket(ctx context.Context, req *loggingpb.CreateBucketRequest, opts ...gax.CallOption) (*loggingpb.LogBucket, error) {
	return c.internalClient.CreateBucket(ctx, req, opts...)
}

// UpdateBucket updates a bucket. This method replaces the following fields in the
// existing bucket with values from the new bucket: retention_period
//
// If the retention period is decreased and the bucket is locked,
// FAILED_PRECONDITION will be returned.
//
// If the bucket has a LifecycleState of DELETE_REQUESTED, FAILED_PRECONDITION
// will be returned.
//
// A buckets region may not be modified after it is created.
func (c *ConfigClient) UpdateBucket(ctx context.Context, req *loggingpb.UpdateBucketRequest, opts ...gax.CallOption) (*loggingpb.LogBucket, error) {
	return c.internalClient.UpdateBucket(ctx, req, opts...)
}

// DeleteBucket deletes a bucket.
// Moves the bucket to the DELETE_REQUESTED state. After 7 days, the
// bucket will be purged and all logs in the bucket will be permanently
// deleted.
func (c *ConfigClient) DeleteBucket(ctx context.Context, req *loggingpb.DeleteBucketRequest, opts ...gax.CallOption) error {
	return c.internalClient.DeleteBucket(ctx, req, opts...)
}

// UndeleteBucket undeletes a bucket. A bucket that has been deleted may be undeleted within
// the grace period of 7 days.
func (c *ConfigClient) UndeleteBucket(ctx context.Context, req *loggingpb.UndeleteBucketRequest, opts ...gax.CallOption) error {
	return c.internalClient.UndeleteBucket(ctx, req, opts...)
}

// ListViews lists views on a bucket.
func (c *ConfigClient) ListViews(ctx context.Context, req *loggingpb.ListViewsRequest, opts ...gax.CallOption) *LogViewIterator {
	return c.internalClient.ListViews(ctx, req, opts...)
}

// GetView gets a view.
func (c *ConfigClient) GetView(ctx context.Context, req *loggingpb.GetViewRequest, opts ...gax.CallOption) (*loggingpb.LogView, error) {
	return c.internalClient.GetView(ctx, req, opts...)
}

// CreateView creates a view over logs in a bucket. A bucket may contain a maximum of
// 50 views.
func (c *ConfigClient) CreateView(ctx context.Context, req *loggingpb.CreateViewRequest, opts ...gax.CallOption) (*loggingpb.LogView, error) {
	return c.internalClient.CreateView(ctx, req, opts...)
}

// UpdateView updates a view. This method replaces the following fields in the existing
// view with values from the new view: filter.
func (c *ConfigClient) UpdateView(ctx context.Context, req *loggingpb.UpdateViewRequest, opts ...gax.CallOption) (*loggingpb.LogView, error) {
	return c.internalClient.UpdateView(ctx, req, opts...)
}

// DeleteView deletes a view from a bucket.
func (c *ConfigClient) DeleteView(ctx context.Context, req *loggingpb.DeleteViewRequest, opts ...gax.CallOption) error {
	return c.internalClient.DeleteView(ctx, req, opts...)
}

// ListSinks lists sinks.
func (c *ConfigClient) ListSinks(ctx context.Context, req *loggingpb.ListSinksRequest, opts ...gax.CallOption) *LogSinkIterator {
	return c.internalClient.ListSinks(ctx, req, opts...)
}

// GetSink gets a sink.
func (c *ConfigClient) GetSink(ctx context.Context, req *loggingpb.GetSinkRequest, opts ...gax.CallOption) (*loggingpb.LogSink, error) {
	return c.internalClient.GetSink(ctx, req, opts...)
}

// CreateSink creates a sink that exports specified log entries to a destination. The
// export of newly-ingested log entries begins immediately, unless the sink’s
// writer_identity is not permitted to write to the destination. A sink can
// export log entries only from the resource owning the sink.
func (c *ConfigClient) CreateSink(ctx context.Context, req *loggingpb.CreateSinkRequest, opts ...gax.CallOption) (*loggingpb.LogSink, error) {
	return c.internalClient.CreateSink(ctx, req, opts...)
}

// UpdateSink updates a sink. This method replaces the following fields in the existing
// sink with values from the new sink: destination, and filter.
//
// The updated sink might also have a new writer_identity; see the
// unique_writer_identity field.
func (c *ConfigClient) UpdateSink(ctx context.Context, req *loggingpb.UpdateSinkRequest, opts ...gax.CallOption) (*loggingpb.LogSink, error) {
	return c.internalClient.UpdateSink(ctx, req, opts...)
}

// DeleteSink deletes a sink. If the sink has a unique writer_identity, then that
// service account is also deleted.
func (c *ConfigClient) DeleteSink(ctx context.Context, req *loggingpb.DeleteSinkRequest, opts ...gax.CallOption) error {
	return c.internalClient.DeleteSink(ctx, req, opts...)
}

// ListExclusions lists all the exclusions in a parent resource.
func (c *ConfigClient) ListExclusions(ctx context.Context, req *loggingpb.ListExclusionsRequest, opts ...gax.CallOption) *LogExclusionIterator {
	return c.internalClient.ListExclusions(ctx, req, opts...)
}

// GetExclusion gets the description of an exclusion.
func (c *ConfigClient) GetExclusion(ctx context.Context, req *loggingpb.GetExclusionRequest, opts ...gax.CallOption) (*loggingpb.LogExclusion, error) {
	return c.internalClient.GetExclusion(ctx, req, opts...)
}

// CreateExclusion creates a new exclusion in a specified parent resource.
// Only log entries belonging to that resource can be excluded.
// You can have up to 10 exclusions in a resource.
func (c *ConfigClient) CreateExclusion(ctx context.Context, req *loggingpb.CreateExclusionRequest, opts ...gax.CallOption) (*loggingpb.LogExclusion, error) {
	return c.internalClient.CreateExclusion(ctx, req, opts...)
}

// UpdateExclusion changes one or more properties of an existing exclusion.
func (c *ConfigClient) UpdateExclusion(ctx context.Context, req *loggingpb.UpdateExclusionRequest, opts ...gax.CallOption) (*loggingpb.LogExclusion, error) {
	return c.internalClient.UpdateExclusion(ctx, req, opts...)
}

// DeleteExclusion deletes an exclusion.
func (c *ConfigClient) DeleteExclusion(ctx context.Context, req *loggingpb.DeleteExclusionRequest, opts ...gax.CallOption) error {
	return c.internalClient.DeleteExclusion(ctx, req, opts...)
}

// GetCmekSettings gets the Logs Router CMEK settings for the given resource.
//
// Note: CMEK for the Logs Router can currently only be configured for GCP
// organizations. Once configured, it applies to all projects and folders in
// the GCP organization.
//
// See Enabling CMEK for Logs
// Router (at https://cloud.google.com/logging/docs/routing/managed-encryption)
// for more information.
func (c *ConfigClient) GetCmekSettings(ctx context.Context, req *loggingpb.GetCmekSettingsRequest, opts ...gax.CallOption) (*loggingpb.CmekSettings, error) {
	return c.internalClient.GetCmekSettings(ctx, req, opts...)
}

// UpdateCmekSettings updates the Logs Router CMEK settings for the given resource.
//
// Note: CMEK for the Logs Router can currently only be configured for GCP
// organizations. Once configured, it applies to all projects and folders in
// the GCP organization.
//
// UpdateCmekSettings
// will fail if 1) kms_key_name is invalid, or 2) the associated service
// account does not have the required
// roles/cloudkms.cryptoKeyEncrypterDecrypter role assigned for the key, or
// 3) access to the key is disabled.
//
// See Enabling CMEK for Logs
// Router (at https://cloud.google.com/logging/docs/routing/managed-encryption)
// for more information.
func (c *ConfigClient) UpdateCmekSettings(ctx context.Context, req *loggingpb.UpdateCmekSettingsRequest, opts ...gax.CallOption) (*loggingpb.CmekSettings, error) {
	return c.internalClient.UpdateCmekSettings(ctx, req, opts...)
}

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

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

	// Points back to the CallOptions field of the containing ConfigClient
	CallOptions **ConfigCallOptions

	// The gRPC API client.
	configClient loggingpb.ConfigServiceV2Client

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

// NewConfigClient creates a new config service v2 client based on gRPC.
// The returned client must be Closed when it is done being used to clean up its underlying connections.
//
// Service for configuring sinks used to route log entries.
func NewConfigClient(ctx context.Context, opts ...option.ClientOption) (*ConfigClient, error) {
	clientOpts := defaultConfigGRPCClientOptions()
	if newConfigClientHook != nil {
		hookOpts, err := newConfigClientHook(ctx, clientHookParams{})
		if err != nil {
			return nil, err
		}
		clientOpts = append(clientOpts, hookOpts...)
	}

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

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

	c := &configGRPCClient{
		connPool:         connPool,
		disableDeadlines: disableDeadlines,
		configClient:     loggingpb.NewConfigServiceV2Client(connPool),
		CallOptions:      &client.CallOptions,
	}
	c.setGoogleClientInfo()

	client.internalClient = c

	return &client, nil
}

// Connection returns a connection to the API service.
//
// Deprecated.
func (c *configGRPCClient) 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 *configGRPCClient) setGoogleClientInfo(keyval ...string) {
	kv := append([]string{"gl-go", versionGo()}, keyval...)
	kv = append(kv, "gapic", versionClient, "gax", gax.Version, "grpc", grpc.Version)
	c.xGoogMetadata = metadata.Pairs("x-goog-api-client", gax.XGoogHeader(kv...))
}

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

func (c *configGRPCClient) ListBuckets(ctx context.Context, req *loggingpb.ListBucketsRequest, opts ...gax.CallOption) *LogBucketIterator {
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "parent", url.QueryEscape(req.GetParent())))
	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append((*c.CallOptions).ListBuckets[0:len((*c.CallOptions).ListBuckets):len((*c.CallOptions).ListBuckets)], opts...)
	it := &LogBucketIterator{}
	req = proto.Clone(req).(*loggingpb.ListBucketsRequest)
	it.InternalFetch = func(pageSize int, pageToken string) ([]*loggingpb.LogBucket, string, error) {
		var resp *loggingpb.ListBucketsResponse
		req.PageToken = pageToken
		if pageSize > math.MaxInt32 {
			req.PageSize = math.MaxInt32
		} else {
			req.PageSize = int32(pageSize)
		}
		err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
			var err error
			resp, err = c.configClient.ListBuckets(ctx, req, settings.GRPC...)
			return err
		}, opts...)
		if err != nil {
			return nil, "", err
		}

		it.Response = resp
		return resp.GetBuckets(), 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 *configGRPCClient) GetBucket(ctx context.Context, req *loggingpb.GetBucketRequest, opts ...gax.CallOption) (*loggingpb.LogBucket, error) {
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName())))
	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append((*c.CallOptions).GetBucket[0:len((*c.CallOptions).GetBucket):len((*c.CallOptions).GetBucket)], opts...)
	var resp *loggingpb.LogBucket
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.configClient.GetBucket(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *configGRPCClient) CreateBucket(ctx context.Context, req *loggingpb.CreateBucketRequest, opts ...gax.CallOption) (*loggingpb.LogBucket, error) {
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "parent", url.QueryEscape(req.GetParent())))
	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append((*c.CallOptions).CreateBucket[0:len((*c.CallOptions).CreateBucket):len((*c.CallOptions).CreateBucket)], opts...)
	var resp *loggingpb.LogBucket
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.configClient.CreateBucket(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *configGRPCClient) UpdateBucket(ctx context.Context, req *loggingpb.UpdateBucketRequest, opts ...gax.CallOption) (*loggingpb.LogBucket, error) {
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName())))
	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append((*c.CallOptions).UpdateBucket[0:len((*c.CallOptions).UpdateBucket):len((*c.CallOptions).UpdateBucket)], opts...)
	var resp *loggingpb.LogBucket
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.configClient.UpdateBucket(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *configGRPCClient) DeleteBucket(ctx context.Context, req *loggingpb.DeleteBucketRequest, opts ...gax.CallOption) error {
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName())))
	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append((*c.CallOptions).DeleteBucket[0:len((*c.CallOptions).DeleteBucket):len((*c.CallOptions).DeleteBucket)], opts...)
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		_, err = c.configClient.DeleteBucket(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	return err
}

func (c *configGRPCClient) UndeleteBucket(ctx context.Context, req *loggingpb.UndeleteBucketRequest, opts ...gax.CallOption) error {
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName())))
	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append((*c.CallOptions).UndeleteBucket[0:len((*c.CallOptions).UndeleteBucket):len((*c.CallOptions).UndeleteBucket)], opts...)
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		_, err = c.configClient.UndeleteBucket(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	return err
}

func (c *configGRPCClient) ListViews(ctx context.Context, req *loggingpb.ListViewsRequest, opts ...gax.CallOption) *LogViewIterator {
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "parent", url.QueryEscape(req.GetParent())))
	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append((*c.CallOptions).ListViews[0:len((*c.CallOptions).ListViews):len((*c.CallOptions).ListViews)], opts...)
	it := &LogViewIterator{}
	req = proto.Clone(req).(*loggingpb.ListViewsRequest)
	it.InternalFetch = func(pageSize int, pageToken string) ([]*loggingpb.LogView, string, error) {
		var resp *loggingpb.ListViewsResponse
		req.PageToken = pageToken
		if pageSize > math.MaxInt32 {
			req.PageSize = math.MaxInt32
		} else {
			req.PageSize = int32(pageSize)
		}
		err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
			var err error
			resp, err = c.configClient.ListViews(ctx, req, settings.GRPC...)
			return err
		}, opts...)
		if err != nil {
			return nil, "", err
		}

		it.Response = resp
		return resp.GetViews(), 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 *configGRPCClient) GetView(ctx context.Context, req *loggingpb.GetViewRequest, opts ...gax.CallOption) (*loggingpb.LogView, error) {
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName())))
	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append((*c.CallOptions).GetView[0:len((*c.CallOptions).GetView):len((*c.CallOptions).GetView)], opts...)
	var resp *loggingpb.LogView
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.configClient.GetView(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *configGRPCClient) CreateView(ctx context.Context, req *loggingpb.CreateViewRequest, opts ...gax.CallOption) (*loggingpb.LogView, error) {
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "parent", url.QueryEscape(req.GetParent())))
	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append((*c.CallOptions).CreateView[0:len((*c.CallOptions).CreateView):len((*c.CallOptions).CreateView)], opts...)
	var resp *loggingpb.LogView
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.configClient.CreateView(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *configGRPCClient) UpdateView(ctx context.Context, req *loggingpb.UpdateViewRequest, opts ...gax.CallOption) (*loggingpb.LogView, error) {
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName())))
	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append((*c.CallOptions).UpdateView[0:len((*c.CallOptions).UpdateView):len((*c.CallOptions).UpdateView)], opts...)
	var resp *loggingpb.LogView
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.configClient.UpdateView(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *configGRPCClient) DeleteView(ctx context.Context, req *loggingpb.DeleteViewRequest, opts ...gax.CallOption) error {
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName())))
	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append((*c.CallOptions).DeleteView[0:len((*c.CallOptions).DeleteView):len((*c.CallOptions).DeleteView)], opts...)
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		_, err = c.configClient.DeleteView(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	return err
}

func (c *configGRPCClient) ListSinks(ctx context.Context, req *loggingpb.ListSinksRequest, opts ...gax.CallOption) *LogSinkIterator {
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "parent", url.QueryEscape(req.GetParent())))
	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append((*c.CallOptions).ListSinks[0:len((*c.CallOptions).ListSinks):len((*c.CallOptions).ListSinks)], opts...)
	it := &LogSinkIterator{}
	req = proto.Clone(req).(*loggingpb.ListSinksRequest)
	it.InternalFetch = func(pageSize int, pageToken string) ([]*loggingpb.LogSink, string, error) {
		var resp *loggingpb.ListSinksResponse
		req.PageToken = pageToken
		if pageSize > math.MaxInt32 {
			req.PageSize = math.MaxInt32
		} else {
			req.PageSize = int32(pageSize)
		}
		err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
			var err error
			resp, err = c.configClient.ListSinks(ctx, req, settings.GRPC...)
			return err
		}, opts...)
		if err != nil {
			return nil, "", err
		}

		it.Response = resp
		return resp.GetSinks(), 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 *configGRPCClient) GetSink(ctx context.Context, req *loggingpb.GetSinkRequest, opts ...gax.CallOption) (*loggingpb.LogSink, error) {
	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
		cctx, cancel := context.WithTimeout(ctx, 60000*time.Millisecond)
		defer cancel()
		ctx = cctx
	}
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "sink_name", url.QueryEscape(req.GetSinkName())))
	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append((*c.CallOptions).GetSink[0:len((*c.CallOptions).GetSink):len((*c.CallOptions).GetSink)], opts...)
	var resp *loggingpb.LogSink
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.configClient.GetSink(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *configGRPCClient) CreateSink(ctx context.Context, req *loggingpb.CreateSinkRequest, opts ...gax.CallOption) (*loggingpb.LogSink, error) {
	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
		cctx, cancel := context.WithTimeout(ctx, 120000*time.Millisecond)
		defer cancel()
		ctx = cctx
	}
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "parent", url.QueryEscape(req.GetParent())))
	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append((*c.CallOptions).CreateSink[0:len((*c.CallOptions).CreateSink):len((*c.CallOptions).CreateSink)], opts...)
	var resp *loggingpb.LogSink
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.configClient.CreateSink(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *configGRPCClient) UpdateSink(ctx context.Context, req *loggingpb.UpdateSinkRequest, opts ...gax.CallOption) (*loggingpb.LogSink, error) {
	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
		cctx, cancel := context.WithTimeout(ctx, 60000*time.Millisecond)
		defer cancel()
		ctx = cctx
	}
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "sink_name", url.QueryEscape(req.GetSinkName())))
	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append((*c.CallOptions).UpdateSink[0:len((*c.CallOptions).UpdateSink):len((*c.CallOptions).UpdateSink)], opts...)
	var resp *loggingpb.LogSink
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.configClient.UpdateSink(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *configGRPCClient) DeleteSink(ctx context.Context, req *loggingpb.DeleteSinkRequest, opts ...gax.CallOption) error {
	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
		cctx, cancel := context.WithTimeout(ctx, 60000*time.Millisecond)
		defer cancel()
		ctx = cctx
	}
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "sink_name", url.QueryEscape(req.GetSinkName())))
	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append((*c.CallOptions).DeleteSink[0:len((*c.CallOptions).DeleteSink):len((*c.CallOptions).DeleteSink)], opts...)
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		_, err = c.configClient.DeleteSink(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	return err
}

func (c *configGRPCClient) ListExclusions(ctx context.Context, req *loggingpb.ListExclusionsRequest, opts ...gax.CallOption) *LogExclusionIterator {
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "parent", url.QueryEscape(req.GetParent())))
	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append((*c.CallOptions).ListExclusions[0:len((*c.CallOptions).ListExclusions):len((*c.CallOptions).ListExclusions)], opts...)
	it := &LogExclusionIterator{}
	req = proto.Clone(req).(*loggingpb.ListExclusionsRequest)
	it.InternalFetch = func(pageSize int, pageToken string) ([]*loggingpb.LogExclusion, string, error) {
		var resp *loggingpb.ListExclusionsResponse
		req.PageToken = pageToken
		if pageSize > math.MaxInt32 {
			req.PageSize = math.MaxInt32
		} else {
			req.PageSize = int32(pageSize)
		}
		err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
			var err error
			resp, err = c.configClient.ListExclusions(ctx, req, settings.GRPC...)
			return err
		}, opts...)
		if err != nil {
			return nil, "", err
		}

		it.Response = resp
		return resp.GetExclusions(), 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 *configGRPCClient) GetExclusion(ctx context.Context, req *loggingpb.GetExclusionRequest, opts ...gax.CallOption) (*loggingpb.LogExclusion, error) {
	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
		cctx, cancel := context.WithTimeout(ctx, 60000*time.Millisecond)
		defer cancel()
		ctx = cctx
	}
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName())))
	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append((*c.CallOptions).GetExclusion[0:len((*c.CallOptions).GetExclusion):len((*c.CallOptions).GetExclusion)], opts...)
	var resp *loggingpb.LogExclusion
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.configClient.GetExclusion(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *configGRPCClient) CreateExclusion(ctx context.Context, req *loggingpb.CreateExclusionRequest, opts ...gax.CallOption) (*loggingpb.LogExclusion, error) {
	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
		cctx, cancel := context.WithTimeout(ctx, 120000*time.Millisecond)
		defer cancel()
		ctx = cctx
	}
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "parent", url.QueryEscape(req.GetParent())))
	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append((*c.CallOptions).CreateExclusion[0:len((*c.CallOptions).CreateExclusion):len((*c.CallOptions).CreateExclusion)], opts...)
	var resp *loggingpb.LogExclusion
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.configClient.CreateExclusion(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *configGRPCClient) UpdateExclusion(ctx context.Context, req *loggingpb.UpdateExclusionRequest, opts ...gax.CallOption) (*loggingpb.LogExclusion, error) {
	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
		cctx, cancel := context.WithTimeout(ctx, 120000*time.Millisecond)
		defer cancel()
		ctx = cctx
	}
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName())))
	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append((*c.CallOptions).UpdateExclusion[0:len((*c.CallOptions).UpdateExclusion):len((*c.CallOptions).UpdateExclusion)], opts...)
	var resp *loggingpb.LogExclusion
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.configClient.UpdateExclusion(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *configGRPCClient) DeleteExclusion(ctx context.Context, req *loggingpb.DeleteExclusionRequest, opts ...gax.CallOption) error {
	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
		cctx, cancel := context.WithTimeout(ctx, 60000*time.Millisecond)
		defer cancel()
		ctx = cctx
	}
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName())))
	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append((*c.CallOptions).DeleteExclusion[0:len((*c.CallOptions).DeleteExclusion):len((*c.CallOptions).DeleteExclusion)], opts...)
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		_, err = c.configClient.DeleteExclusion(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	return err
}

func (c *configGRPCClient) GetCmekSettings(ctx context.Context, req *loggingpb.GetCmekSettingsRequest, opts ...gax.CallOption) (*loggingpb.CmekSettings, error) {
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName())))
	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append((*c.CallOptions).GetCmekSettings[0:len((*c.CallOptions).GetCmekSettings):len((*c.CallOptions).GetCmekSettings)], opts...)
	var resp *loggingpb.CmekSettings
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.configClient.GetCmekSettings(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *configGRPCClient) UpdateCmekSettings(ctx context.Context, req *loggingpb.UpdateCmekSettingsRequest, opts ...gax.CallOption) (*loggingpb.CmekSettings, error) {
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName())))
	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append((*c.CallOptions).UpdateCmekSettings[0:len((*c.CallOptions).UpdateCmekSettings):len((*c.CallOptions).UpdateCmekSettings)], opts...)
	var resp *loggingpb.CmekSettings
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.configClient.UpdateCmekSettings(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

// LogBucketIterator manages a stream of *loggingpb.LogBucket.
type LogBucketIterator struct {
	items    []*loggingpb.LogBucket
	pageInfo *iterator.PageInfo
	nextFunc func() error

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

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

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

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

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

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

// LogExclusionIterator manages a stream of *loggingpb.LogExclusion.
type LogExclusionIterator struct {
	items    []*loggingpb.LogExclusion
	pageInfo *iterator.PageInfo
	nextFunc func() error

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

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

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

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

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

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

// LogSinkIterator manages a stream of *loggingpb.LogSink.
type LogSinkIterator struct {
	items    []*loggingpb.LogSink
	pageInfo *iterator.PageInfo
	nextFunc func() error

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

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

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

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

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

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

// LogViewIterator manages a stream of *loggingpb.LogView.
type LogViewIterator struct {
	items    []*loggingpb.LogView
	pageInfo *iterator.PageInfo
	nextFunc func() error

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

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

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

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

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

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