// 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 servicemanagement

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

	"cloud.google.com/go/longrunning"
	lroauto "cloud.google.com/go/longrunning/autogen"
	"github.com/golang/protobuf/proto"
	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"
	serviceconfigpb "google.golang.org/genproto/googleapis/api/serviceconfig"
	servicemanagementpb "google.golang.org/genproto/googleapis/api/servicemanagement/v1"
	longrunningpb "google.golang.org/genproto/googleapis/longrunning"
	"google.golang.org/grpc"
	"google.golang.org/grpc/metadata"
)

var newServiceManagerClientHook clientHook

// ServiceManagerCallOptions contains the retry settings for each method of ServiceManagerClient.
type ServiceManagerCallOptions struct {
	ListServices         []gax.CallOption
	GetService           []gax.CallOption
	CreateService        []gax.CallOption
	DeleteService        []gax.CallOption
	UndeleteService      []gax.CallOption
	ListServiceConfigs   []gax.CallOption
	GetServiceConfig     []gax.CallOption
	CreateServiceConfig  []gax.CallOption
	SubmitConfigSource   []gax.CallOption
	ListServiceRollouts  []gax.CallOption
	GetServiceRollout    []gax.CallOption
	CreateServiceRollout []gax.CallOption
	GenerateConfigReport []gax.CallOption
	EnableService        []gax.CallOption
	DisableService       []gax.CallOption
}

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

func defaultServiceManagerCallOptions() *ServiceManagerCallOptions {
	return &ServiceManagerCallOptions{
		ListServices:         []gax.CallOption{},
		GetService:           []gax.CallOption{},
		CreateService:        []gax.CallOption{},
		DeleteService:        []gax.CallOption{},
		UndeleteService:      []gax.CallOption{},
		ListServiceConfigs:   []gax.CallOption{},
		GetServiceConfig:     []gax.CallOption{},
		CreateServiceConfig:  []gax.CallOption{},
		SubmitConfigSource:   []gax.CallOption{},
		ListServiceRollouts:  []gax.CallOption{},
		GetServiceRollout:    []gax.CallOption{},
		CreateServiceRollout: []gax.CallOption{},
		GenerateConfigReport: []gax.CallOption{},
		EnableService:        []gax.CallOption{},
		DisableService:       []gax.CallOption{},
	}
}

// ServiceManagerClient is a client for interacting with .
//
// Methods, except Close, may be called concurrently. However, fields must not be modified concurrently with method calls.
type ServiceManagerClient 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

	// The gRPC API client.
	serviceManagerClient servicemanagementpb.ServiceManagerClient

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

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

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

// NewServiceManagerClient creates a new service manager client.
//
// Google Service Management API (at /service-management/overview)
func NewServiceManagerClient(ctx context.Context, opts ...option.ClientOption) (*ServiceManagerClient, error) {
	clientOpts := defaultServiceManagerClientOptions()

	if newServiceManagerClientHook != nil {
		hookOpts, err := newServiceManagerClientHook(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
	}
	c := &ServiceManagerClient{
		connPool:         connPool,
		disableDeadlines: disableDeadlines,
		CallOptions:      defaultServiceManagerCallOptions(),

		serviceManagerClient: servicemanagementpb.NewServiceManagerClient(connPool),
	}
	c.setGoogleClientInfo()

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

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

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

// ListServices lists managed services.
//
// Returns all public services. For authenticated users, also returns all
// services the calling user has “servicemanagement.services.get” permission
// for.
//
// BETA: If the caller specifies the consumer_id, it returns only the
// services enabled on the consumer. The consumer_id must have the format
// of “project:{PROJECT-ID}”.
func (c *ServiceManagerClient) ListServices(ctx context.Context, req *servicemanagementpb.ListServicesRequest, opts ...gax.CallOption) *ManagedServiceIterator {
	ctx = insertMetadata(ctx, c.xGoogMetadata)
	opts = append(c.CallOptions.ListServices[0:len(c.CallOptions.ListServices):len(c.CallOptions.ListServices)], opts...)
	it := &ManagedServiceIterator{}
	req = proto.Clone(req).(*servicemanagementpb.ListServicesRequest)
	it.InternalFetch = func(pageSize int, pageToken string) ([]*servicemanagementpb.ManagedService, string, error) {
		var resp *servicemanagementpb.ListServicesResponse
		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.serviceManagerClient.ListServices(ctx, req, settings.GRPC...)
			return err
		}, opts...)
		if err != nil {
			return nil, "", err
		}

		it.Response = resp
		return resp.GetServices(), resp.GetNextPageToken(), nil
	}
	fetch := func(pageSize int, pageToken string) (string, error) {
		items, nextPageToken, err := it.InternalFetch(pageSize, pageToken)
		if err != nil {
			return "", err
		}
		it.items = append(it.items, items...)
		return nextPageToken, nil
	}
	it.pageInfo, it.nextFunc = iterator.NewPageInfo(fetch, it.bufLen, it.takeBuf)
	it.pageInfo.MaxSize = int(req.GetPageSize())
	it.pageInfo.Token = req.GetPageToken()
	return it
}

// GetService gets a managed service. Authentication is required unless the service is
// public.
func (c *ServiceManagerClient) GetService(ctx context.Context, req *servicemanagementpb.GetServiceRequest, opts ...gax.CallOption) (*servicemanagementpb.ManagedService, error) {
	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
		cctx, cancel := context.WithTimeout(ctx, 10000*time.Millisecond)
		defer cancel()
		ctx = cctx
	}
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "service_name", url.QueryEscape(req.GetServiceName())))
	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append(c.CallOptions.GetService[0:len(c.CallOptions.GetService):len(c.CallOptions.GetService)], opts...)
	var resp *servicemanagementpb.ManagedService
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.serviceManagerClient.GetService(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

// CreateService creates a new managed service.
// Please note one producer project can own no more than 20 services.
//
// Operation<response: ManagedService>
func (c *ServiceManagerClient) CreateService(ctx context.Context, req *servicemanagementpb.CreateServiceRequest, opts ...gax.CallOption) (*CreateServiceOperation, error) {
	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
		cctx, cancel := context.WithTimeout(ctx, 10000*time.Millisecond)
		defer cancel()
		ctx = cctx
	}
	ctx = insertMetadata(ctx, c.xGoogMetadata)
	opts = append(c.CallOptions.CreateService[0:len(c.CallOptions.CreateService):len(c.CallOptions.CreateService)], opts...)
	var resp *longrunningpb.Operation
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.serviceManagerClient.CreateService(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return &CreateServiceOperation{
		lro: longrunning.InternalNewOperation(c.LROClient, resp),
	}, nil
}

// DeleteService deletes a managed service. This method will change the service to the
// Soft-Delete state for 30 days. Within this period, service producers may
// call UndeleteService to restore the service.
// After 30 days, the service will be permanently deleted.
//
// Operation<response: google.protobuf.Empty>
func (c *ServiceManagerClient) DeleteService(ctx context.Context, req *servicemanagementpb.DeleteServiceRequest, opts ...gax.CallOption) (*DeleteServiceOperation, error) {
	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
		cctx, cancel := context.WithTimeout(ctx, 10000*time.Millisecond)
		defer cancel()
		ctx = cctx
	}
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "service_name", url.QueryEscape(req.GetServiceName())))
	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append(c.CallOptions.DeleteService[0:len(c.CallOptions.DeleteService):len(c.CallOptions.DeleteService)], opts...)
	var resp *longrunningpb.Operation
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.serviceManagerClient.DeleteService(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return &DeleteServiceOperation{
		lro: longrunning.InternalNewOperation(c.LROClient, resp),
	}, nil
}

// UndeleteService revives a previously deleted managed service. The method restores the
// service using the configuration at the time the service was deleted.
// The target service must exist and must have been deleted within the
// last 30 days.
//
// Operation<response: UndeleteServiceResponse>
func (c *ServiceManagerClient) UndeleteService(ctx context.Context, req *servicemanagementpb.UndeleteServiceRequest, opts ...gax.CallOption) (*UndeleteServiceOperation, error) {
	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
		cctx, cancel := context.WithTimeout(ctx, 10000*time.Millisecond)
		defer cancel()
		ctx = cctx
	}
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "service_name", url.QueryEscape(req.GetServiceName())))
	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append(c.CallOptions.UndeleteService[0:len(c.CallOptions.UndeleteService):len(c.CallOptions.UndeleteService)], opts...)
	var resp *longrunningpb.Operation
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.serviceManagerClient.UndeleteService(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return &UndeleteServiceOperation{
		lro: longrunning.InternalNewOperation(c.LROClient, resp),
	}, nil
}

// ListServiceConfigs lists the history of the service configuration for a managed service,
// from the newest to the oldest.
func (c *ServiceManagerClient) ListServiceConfigs(ctx context.Context, req *servicemanagementpb.ListServiceConfigsRequest, opts ...gax.CallOption) *ServiceIterator {
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "service_name", url.QueryEscape(req.GetServiceName())))
	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append(c.CallOptions.ListServiceConfigs[0:len(c.CallOptions.ListServiceConfigs):len(c.CallOptions.ListServiceConfigs)], opts...)
	it := &ServiceIterator{}
	req = proto.Clone(req).(*servicemanagementpb.ListServiceConfigsRequest)
	it.InternalFetch = func(pageSize int, pageToken string) ([]*serviceconfigpb.Service, string, error) {
		var resp *servicemanagementpb.ListServiceConfigsResponse
		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.serviceManagerClient.ListServiceConfigs(ctx, req, settings.GRPC...)
			return err
		}, opts...)
		if err != nil {
			return nil, "", err
		}

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

// GetServiceConfig gets a service configuration (version) for a managed service.
func (c *ServiceManagerClient) GetServiceConfig(ctx context.Context, req *servicemanagementpb.GetServiceConfigRequest, opts ...gax.CallOption) (*serviceconfigpb.Service, error) {
	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
		cctx, cancel := context.WithTimeout(ctx, 10000*time.Millisecond)
		defer cancel()
		ctx = cctx
	}
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v&%s=%v", "service_name", url.QueryEscape(req.GetServiceName()), "config_id", url.QueryEscape(req.GetConfigId())))
	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append(c.CallOptions.GetServiceConfig[0:len(c.CallOptions.GetServiceConfig):len(c.CallOptions.GetServiceConfig)], opts...)
	var resp *serviceconfigpb.Service
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.serviceManagerClient.GetServiceConfig(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

// CreateServiceConfig creates a new service configuration (version) for a managed service.
// This method only stores the service configuration. To roll out the service
// configuration to backend systems please call
// CreateServiceRollout.
//
// Only the 100 most recent service configurations and ones referenced by
// existing rollouts are kept for each service. The rest will be deleted
// eventually.
func (c *ServiceManagerClient) CreateServiceConfig(ctx context.Context, req *servicemanagementpb.CreateServiceConfigRequest, opts ...gax.CallOption) (*serviceconfigpb.Service, error) {
	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
		cctx, cancel := context.WithTimeout(ctx, 10000*time.Millisecond)
		defer cancel()
		ctx = cctx
	}
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "service_name", url.QueryEscape(req.GetServiceName())))
	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append(c.CallOptions.CreateServiceConfig[0:len(c.CallOptions.CreateServiceConfig):len(c.CallOptions.CreateServiceConfig)], opts...)
	var resp *serviceconfigpb.Service
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.serviceManagerClient.CreateServiceConfig(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

// SubmitConfigSource creates a new service configuration (version) for a managed service based
// on
// user-supplied configuration source files (for example: OpenAPI
// Specification). This method stores the source configurations as well as the
// generated service configuration. To rollout the service configuration to
// other services,
// please call CreateServiceRollout.
//
// Only the 100 most recent configuration sources and ones referenced by
// existing service configurtions are kept for each service. The rest will be
// deleted eventually.
//
// Operation<response: SubmitConfigSourceResponse>
func (c *ServiceManagerClient) SubmitConfigSource(ctx context.Context, req *servicemanagementpb.SubmitConfigSourceRequest, opts ...gax.CallOption) (*SubmitConfigSourceOperation, error) {
	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
		cctx, cancel := context.WithTimeout(ctx, 10000*time.Millisecond)
		defer cancel()
		ctx = cctx
	}
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "service_name", url.QueryEscape(req.GetServiceName())))
	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append(c.CallOptions.SubmitConfigSource[0:len(c.CallOptions.SubmitConfigSource):len(c.CallOptions.SubmitConfigSource)], opts...)
	var resp *longrunningpb.Operation
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.serviceManagerClient.SubmitConfigSource(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return &SubmitConfigSourceOperation{
		lro: longrunning.InternalNewOperation(c.LROClient, resp),
	}, nil
}

// ListServiceRollouts lists the history of the service configuration rollouts for a managed
// service, from the newest to the oldest.
func (c *ServiceManagerClient) ListServiceRollouts(ctx context.Context, req *servicemanagementpb.ListServiceRolloutsRequest, opts ...gax.CallOption) *RolloutIterator {
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "service_name", url.QueryEscape(req.GetServiceName())))
	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append(c.CallOptions.ListServiceRollouts[0:len(c.CallOptions.ListServiceRollouts):len(c.CallOptions.ListServiceRollouts)], opts...)
	it := &RolloutIterator{}
	req = proto.Clone(req).(*servicemanagementpb.ListServiceRolloutsRequest)
	it.InternalFetch = func(pageSize int, pageToken string) ([]*servicemanagementpb.Rollout, string, error) {
		var resp *servicemanagementpb.ListServiceRolloutsResponse
		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.serviceManagerClient.ListServiceRollouts(ctx, req, settings.GRPC...)
			return err
		}, opts...)
		if err != nil {
			return nil, "", err
		}

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

// GetServiceRollout gets a service configuration rollout.
func (c *ServiceManagerClient) GetServiceRollout(ctx context.Context, req *servicemanagementpb.GetServiceRolloutRequest, opts ...gax.CallOption) (*servicemanagementpb.Rollout, error) {
	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
		cctx, cancel := context.WithTimeout(ctx, 10000*time.Millisecond)
		defer cancel()
		ctx = cctx
	}
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v&%s=%v", "service_name", url.QueryEscape(req.GetServiceName()), "rollout_id", url.QueryEscape(req.GetRolloutId())))
	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append(c.CallOptions.GetServiceRollout[0:len(c.CallOptions.GetServiceRollout):len(c.CallOptions.GetServiceRollout)], opts...)
	var resp *servicemanagementpb.Rollout
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.serviceManagerClient.GetServiceRollout(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

// CreateServiceRollout creates a new service configuration rollout. Based on rollout, the
// Google Service Management will roll out the service configurations to
// different backend services. For example, the logging configuration will be
// pushed to Google Cloud Logging.
//
// Please note that any previous pending and running Rollouts and associated
// Operations will be automatically cancelled so that the latest Rollout will
// not be blocked by previous Rollouts.
//
// Only the 100 most recent (in any state) and the last 10 successful (if not
// already part of the set of 100 most recent) rollouts are kept for each
// service. The rest will be deleted eventually.
//
// Operation<response: Rollout>
func (c *ServiceManagerClient) CreateServiceRollout(ctx context.Context, req *servicemanagementpb.CreateServiceRolloutRequest, opts ...gax.CallOption) (*CreateServiceRolloutOperation, error) {
	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
		cctx, cancel := context.WithTimeout(ctx, 10000*time.Millisecond)
		defer cancel()
		ctx = cctx
	}
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "service_name", url.QueryEscape(req.GetServiceName())))
	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append(c.CallOptions.CreateServiceRollout[0:len(c.CallOptions.CreateServiceRollout):len(c.CallOptions.CreateServiceRollout)], opts...)
	var resp *longrunningpb.Operation
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.serviceManagerClient.CreateServiceRollout(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return &CreateServiceRolloutOperation{
		lro: longrunning.InternalNewOperation(c.LROClient, resp),
	}, nil
}

// GenerateConfigReport generates and returns a report (errors, warnings and changes from
// existing configurations) associated with
// GenerateConfigReportRequest.new_value
//
// If GenerateConfigReportRequest.old_value is specified,
// GenerateConfigReportRequest will contain a single ChangeReport based on the
// comparison between GenerateConfigReportRequest.new_value and
// GenerateConfigReportRequest.old_value.
// If GenerateConfigReportRequest.old_value is not specified, this method
// will compare GenerateConfigReportRequest.new_value with the last pushed
// service configuration.
func (c *ServiceManagerClient) GenerateConfigReport(ctx context.Context, req *servicemanagementpb.GenerateConfigReportRequest, opts ...gax.CallOption) (*servicemanagementpb.GenerateConfigReportResponse, error) {
	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
		cctx, cancel := context.WithTimeout(ctx, 10000*time.Millisecond)
		defer cancel()
		ctx = cctx
	}
	ctx = insertMetadata(ctx, c.xGoogMetadata)
	opts = append(c.CallOptions.GenerateConfigReport[0:len(c.CallOptions.GenerateConfigReport):len(c.CallOptions.GenerateConfigReport)], opts...)
	var resp *servicemanagementpb.GenerateConfigReportResponse
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.serviceManagerClient.GenerateConfigReport(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

// EnableService enables a service for a project, so it can be used
// for the project. See
// Cloud Auth Guide (at https://cloud.google.com/docs/authentication) for
// more information.
//
// Operation<response: EnableServiceResponse>
func (c *ServiceManagerClient) EnableService(ctx context.Context, req *servicemanagementpb.EnableServiceRequest, opts ...gax.CallOption) (*EnableServiceOperation, error) {
	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
		cctx, cancel := context.WithTimeout(ctx, 10000*time.Millisecond)
		defer cancel()
		ctx = cctx
	}
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "service_name", url.QueryEscape(req.GetServiceName())))
	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append(c.CallOptions.EnableService[0:len(c.CallOptions.EnableService):len(c.CallOptions.EnableService)], opts...)
	var resp *longrunningpb.Operation
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.serviceManagerClient.EnableService(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return &EnableServiceOperation{
		lro: longrunning.InternalNewOperation(c.LROClient, resp),
	}, nil
}

// DisableService disables a service for a project, so it can no longer be
// be used for the project. It prevents accidental usage that may cause
// unexpected billing charges or security leaks.
//
// Operation<response: DisableServiceResponse>
func (c *ServiceManagerClient) DisableService(ctx context.Context, req *servicemanagementpb.DisableServiceRequest, opts ...gax.CallOption) (*DisableServiceOperation, error) {
	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
		cctx, cancel := context.WithTimeout(ctx, 10000*time.Millisecond)
		defer cancel()
		ctx = cctx
	}
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "service_name", url.QueryEscape(req.GetServiceName())))
	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append(c.CallOptions.DisableService[0:len(c.CallOptions.DisableService):len(c.CallOptions.DisableService)], opts...)
	var resp *longrunningpb.Operation
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.serviceManagerClient.DisableService(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return &DisableServiceOperation{
		lro: longrunning.InternalNewOperation(c.LROClient, resp),
	}, nil
}

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

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

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

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

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

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

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

// CreateServiceRolloutOperation manages a long-running operation from CreateServiceRollout.
type CreateServiceRolloutOperation struct {
	lro *longrunning.Operation
}

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

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

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

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

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

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

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

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

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

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

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

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

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

// DisableServiceOperation manages a long-running operation from DisableService.
type DisableServiceOperation struct {
	lro *longrunning.Operation
}

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

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

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

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

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

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

// EnableServiceOperation manages a long-running operation from EnableService.
type EnableServiceOperation struct {
	lro *longrunning.Operation
}

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

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

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

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

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

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

// SubmitConfigSourceOperation manages a long-running operation from SubmitConfigSource.
type SubmitConfigSourceOperation struct {
	lro *longrunning.Operation
}

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

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

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

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

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

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

// UndeleteServiceOperation manages a long-running operation from UndeleteService.
type UndeleteServiceOperation struct {
	lro *longrunning.Operation
}

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

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

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

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

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

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

// ManagedServiceIterator manages a stream of *servicemanagementpb.ManagedService.
type ManagedServiceIterator struct {
	items    []*servicemanagementpb.ManagedService
	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 []*servicemanagementpb.ManagedService, nextPageToken string, err error)
}

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

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

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

// RolloutIterator manages a stream of *servicemanagementpb.Rollout.
type RolloutIterator struct {
	items    []*servicemanagementpb.Rollout
	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 []*servicemanagementpb.Rollout, nextPageToken string, err error)
}

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

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

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

// ServiceIterator manages a stream of *serviceconfigpb.Service.
type ServiceIterator struct {
	items    []*serviceconfigpb.Service
	pageInfo *iterator.PageInfo
	nextFunc func() error

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

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

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

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

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

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