| // Copyright 2020 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 pubsublite |
| |
| import ( |
| "context" |
| "fmt" |
| "math" |
| "net/url" |
| |
| "github.com/golang/protobuf/proto" |
| gax "github.com/googleapis/gax-go/v2" |
| "google.golang.org/api/iterator" |
| "google.golang.org/api/option" |
| gtransport "google.golang.org/api/transport/grpc" |
| pubsublitepb "google.golang.org/genproto/googleapis/cloud/pubsublite/v1" |
| "google.golang.org/grpc" |
| "google.golang.org/grpc/metadata" |
| ) |
| |
| var newAdminClientHook clientHook |
| |
| // AdminCallOptions contains the retry settings for each method of AdminClient. |
| type AdminCallOptions struct { |
| CreateTopic []gax.CallOption |
| GetTopic []gax.CallOption |
| GetTopicPartitions []gax.CallOption |
| ListTopics []gax.CallOption |
| UpdateTopic []gax.CallOption |
| DeleteTopic []gax.CallOption |
| ListTopicSubscriptions []gax.CallOption |
| CreateSubscription []gax.CallOption |
| GetSubscription []gax.CallOption |
| ListSubscriptions []gax.CallOption |
| UpdateSubscription []gax.CallOption |
| DeleteSubscription []gax.CallOption |
| } |
| |
| func defaultAdminClientOptions() []option.ClientOption { |
| return []option.ClientOption{ |
| option.WithEndpoint("pubsublite.googleapis.com:443"), |
| option.WithGRPCDialOption(grpc.WithDisableServiceConfig()), |
| option.WithScopes(DefaultAuthScopes()...), |
| option.WithGRPCDialOption(grpc.WithDefaultCallOptions( |
| grpc.MaxCallRecvMsgSize(math.MaxInt32))), |
| } |
| } |
| |
| func defaultAdminCallOptions() *AdminCallOptions { |
| return &AdminCallOptions{ |
| CreateTopic: []gax.CallOption{}, |
| GetTopic: []gax.CallOption{}, |
| GetTopicPartitions: []gax.CallOption{}, |
| ListTopics: []gax.CallOption{}, |
| UpdateTopic: []gax.CallOption{}, |
| DeleteTopic: []gax.CallOption{}, |
| ListTopicSubscriptions: []gax.CallOption{}, |
| CreateSubscription: []gax.CallOption{}, |
| GetSubscription: []gax.CallOption{}, |
| ListSubscriptions: []gax.CallOption{}, |
| UpdateSubscription: []gax.CallOption{}, |
| DeleteSubscription: []gax.CallOption{}, |
| } |
| } |
| |
| // AdminClient is a client for interacting with . |
| // |
| // Methods, except Close, may be called concurrently. However, fields must not be modified concurrently with method calls. |
| type AdminClient 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. |
| adminClient pubsublitepb.AdminServiceClient |
| |
| // The call options for this service. |
| CallOptions *AdminCallOptions |
| |
| // The x-goog-* metadata to be sent with each request. |
| xGoogMetadata metadata.MD |
| } |
| |
| // NewAdminClient creates a new admin service client. |
| // |
| // The service that a client application uses to manage topics and |
| // subscriptions, such creating, listing, and deleting topics and subscriptions. |
| func NewAdminClient(ctx context.Context, opts ...option.ClientOption) (*AdminClient, error) { |
| clientOpts := defaultAdminClientOptions() |
| |
| if newAdminClientHook != nil { |
| hookOpts, err := newAdminClientHook(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 := &AdminClient{ |
| connPool: connPool, |
| disableDeadlines: disableDeadlines, |
| CallOptions: defaultAdminCallOptions(), |
| |
| adminClient: pubsublitepb.NewAdminServiceClient(connPool), |
| } |
| c.setGoogleClientInfo() |
| |
| return c, nil |
| } |
| |
| // Connection returns a connection to the API service. |
| // |
| // Deprecated. |
| func (c *AdminClient) 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 *AdminClient) 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 *AdminClient) 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...)) |
| } |
| |
| // CreateTopic creates a new topic. |
| func (c *AdminClient) CreateTopic(ctx context.Context, req *pubsublitepb.CreateTopicRequest, opts ...gax.CallOption) (*pubsublitepb.Topic, 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.CreateTopic[0:len(c.CallOptions.CreateTopic):len(c.CallOptions.CreateTopic)], opts...) |
| var resp *pubsublitepb.Topic |
| err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error { |
| var err error |
| resp, err = c.adminClient.CreateTopic(ctx, req, settings.GRPC...) |
| return err |
| }, opts...) |
| if err != nil { |
| return nil, err |
| } |
| return resp, nil |
| } |
| |
| // GetTopic returns the topic configuration. |
| func (c *AdminClient) GetTopic(ctx context.Context, req *pubsublitepb.GetTopicRequest, opts ...gax.CallOption) (*pubsublitepb.Topic, 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.GetTopic[0:len(c.CallOptions.GetTopic):len(c.CallOptions.GetTopic)], opts...) |
| var resp *pubsublitepb.Topic |
| err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error { |
| var err error |
| resp, err = c.adminClient.GetTopic(ctx, req, settings.GRPC...) |
| return err |
| }, opts...) |
| if err != nil { |
| return nil, err |
| } |
| return resp, nil |
| } |
| |
| // GetTopicPartitions returns the partition information for the requested topic. |
| func (c *AdminClient) GetTopicPartitions(ctx context.Context, req *pubsublitepb.GetTopicPartitionsRequest, opts ...gax.CallOption) (*pubsublitepb.TopicPartitions, 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.GetTopicPartitions[0:len(c.CallOptions.GetTopicPartitions):len(c.CallOptions.GetTopicPartitions)], opts...) |
| var resp *pubsublitepb.TopicPartitions |
| err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error { |
| var err error |
| resp, err = c.adminClient.GetTopicPartitions(ctx, req, settings.GRPC...) |
| return err |
| }, opts...) |
| if err != nil { |
| return nil, err |
| } |
| return resp, nil |
| } |
| |
| // ListTopics returns the list of topics for the given project. |
| func (c *AdminClient) ListTopics(ctx context.Context, req *pubsublitepb.ListTopicsRequest, opts ...gax.CallOption) *TopicIterator { |
| 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.ListTopics[0:len(c.CallOptions.ListTopics):len(c.CallOptions.ListTopics)], opts...) |
| it := &TopicIterator{} |
| req = proto.Clone(req).(*pubsublitepb.ListTopicsRequest) |
| it.InternalFetch = func(pageSize int, pageToken string) ([]*pubsublitepb.Topic, string, error) { |
| var resp *pubsublitepb.ListTopicsResponse |
| 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.adminClient.ListTopics(ctx, req, settings.GRPC...) |
| return err |
| }, opts...) |
| if err != nil { |
| return nil, "", err |
| } |
| |
| it.Response = resp |
| return resp.GetTopics(), 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 |
| } |
| |
| // UpdateTopic updates properties of the specified topic. |
| func (c *AdminClient) UpdateTopic(ctx context.Context, req *pubsublitepb.UpdateTopicRequest, opts ...gax.CallOption) (*pubsublitepb.Topic, error) { |
| md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "topic.name", url.QueryEscape(req.GetTopic().GetName()))) |
| ctx = insertMetadata(ctx, c.xGoogMetadata, md) |
| opts = append(c.CallOptions.UpdateTopic[0:len(c.CallOptions.UpdateTopic):len(c.CallOptions.UpdateTopic)], opts...) |
| var resp *pubsublitepb.Topic |
| err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error { |
| var err error |
| resp, err = c.adminClient.UpdateTopic(ctx, req, settings.GRPC...) |
| return err |
| }, opts...) |
| if err != nil { |
| return nil, err |
| } |
| return resp, nil |
| } |
| |
| // DeleteTopic deletes the specified topic. |
| func (c *AdminClient) DeleteTopic(ctx context.Context, req *pubsublitepb.DeleteTopicRequest, 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.DeleteTopic[0:len(c.CallOptions.DeleteTopic):len(c.CallOptions.DeleteTopic)], opts...) |
| err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error { |
| var err error |
| _, err = c.adminClient.DeleteTopic(ctx, req, settings.GRPC...) |
| return err |
| }, opts...) |
| return err |
| } |
| |
| // ListTopicSubscriptions lists the subscriptions attached to the specified topic. |
| func (c *AdminClient) ListTopicSubscriptions(ctx context.Context, req *pubsublitepb.ListTopicSubscriptionsRequest, opts ...gax.CallOption) *StringIterator { |
| 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.ListTopicSubscriptions[0:len(c.CallOptions.ListTopicSubscriptions):len(c.CallOptions.ListTopicSubscriptions)], opts...) |
| it := &StringIterator{} |
| req = proto.Clone(req).(*pubsublitepb.ListTopicSubscriptionsRequest) |
| it.InternalFetch = func(pageSize int, pageToken string) ([]string, string, error) { |
| var resp *pubsublitepb.ListTopicSubscriptionsResponse |
| 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.adminClient.ListTopicSubscriptions(ctx, req, settings.GRPC...) |
| return err |
| }, opts...) |
| if err != nil { |
| return nil, "", err |
| } |
| |
| it.Response = resp |
| return resp.GetSubscriptions(), 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 |
| } |
| |
| // CreateSubscription creates a new subscription. |
| func (c *AdminClient) CreateSubscription(ctx context.Context, req *pubsublitepb.CreateSubscriptionRequest, opts ...gax.CallOption) (*pubsublitepb.Subscription, 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.CreateSubscription[0:len(c.CallOptions.CreateSubscription):len(c.CallOptions.CreateSubscription)], opts...) |
| var resp *pubsublitepb.Subscription |
| err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error { |
| var err error |
| resp, err = c.adminClient.CreateSubscription(ctx, req, settings.GRPC...) |
| return err |
| }, opts...) |
| if err != nil { |
| return nil, err |
| } |
| return resp, nil |
| } |
| |
| // GetSubscription returns the subscription configuration. |
| func (c *AdminClient) GetSubscription(ctx context.Context, req *pubsublitepb.GetSubscriptionRequest, opts ...gax.CallOption) (*pubsublitepb.Subscription, 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.GetSubscription[0:len(c.CallOptions.GetSubscription):len(c.CallOptions.GetSubscription)], opts...) |
| var resp *pubsublitepb.Subscription |
| err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error { |
| var err error |
| resp, err = c.adminClient.GetSubscription(ctx, req, settings.GRPC...) |
| return err |
| }, opts...) |
| if err != nil { |
| return nil, err |
| } |
| return resp, nil |
| } |
| |
| // ListSubscriptions returns the list of subscriptions for the given project. |
| func (c *AdminClient) ListSubscriptions(ctx context.Context, req *pubsublitepb.ListSubscriptionsRequest, opts ...gax.CallOption) *SubscriptionIterator { |
| 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.ListSubscriptions[0:len(c.CallOptions.ListSubscriptions):len(c.CallOptions.ListSubscriptions)], opts...) |
| it := &SubscriptionIterator{} |
| req = proto.Clone(req).(*pubsublitepb.ListSubscriptionsRequest) |
| it.InternalFetch = func(pageSize int, pageToken string) ([]*pubsublitepb.Subscription, string, error) { |
| var resp *pubsublitepb.ListSubscriptionsResponse |
| 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.adminClient.ListSubscriptions(ctx, req, settings.GRPC...) |
| return err |
| }, opts...) |
| if err != nil { |
| return nil, "", err |
| } |
| |
| it.Response = resp |
| return resp.GetSubscriptions(), 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 |
| } |
| |
| // UpdateSubscription updates properties of the specified subscription. |
| func (c *AdminClient) UpdateSubscription(ctx context.Context, req *pubsublitepb.UpdateSubscriptionRequest, opts ...gax.CallOption) (*pubsublitepb.Subscription, error) { |
| md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "subscription.name", url.QueryEscape(req.GetSubscription().GetName()))) |
| ctx = insertMetadata(ctx, c.xGoogMetadata, md) |
| opts = append(c.CallOptions.UpdateSubscription[0:len(c.CallOptions.UpdateSubscription):len(c.CallOptions.UpdateSubscription)], opts...) |
| var resp *pubsublitepb.Subscription |
| err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error { |
| var err error |
| resp, err = c.adminClient.UpdateSubscription(ctx, req, settings.GRPC...) |
| return err |
| }, opts...) |
| if err != nil { |
| return nil, err |
| } |
| return resp, nil |
| } |
| |
| // DeleteSubscription deletes the specified subscription. |
| func (c *AdminClient) DeleteSubscription(ctx context.Context, req *pubsublitepb.DeleteSubscriptionRequest, 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.DeleteSubscription[0:len(c.CallOptions.DeleteSubscription):len(c.CallOptions.DeleteSubscription)], opts...) |
| err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error { |
| var err error |
| _, err = c.adminClient.DeleteSubscription(ctx, req, settings.GRPC...) |
| return err |
| }, opts...) |
| return err |
| } |
| |
| // StringIterator manages a stream of string. |
| type StringIterator struct { |
| items []string |
| 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 []string, nextPageToken string, err error) |
| } |
| |
| // PageInfo supports pagination. See the google.golang.org/api/iterator package for details. |
| func (it *StringIterator) 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 *StringIterator) Next() (string, error) { |
| var item string |
| if err := it.nextFunc(); err != nil { |
| return item, err |
| } |
| item = it.items[0] |
| it.items = it.items[1:] |
| return item, nil |
| } |
| |
| func (it *StringIterator) bufLen() int { |
| return len(it.items) |
| } |
| |
| func (it *StringIterator) takeBuf() interface{} { |
| b := it.items |
| it.items = nil |
| return b |
| } |
| |
| // SubscriptionIterator manages a stream of *pubsublitepb.Subscription. |
| type SubscriptionIterator struct { |
| items []*pubsublitepb.Subscription |
| 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 []*pubsublitepb.Subscription, nextPageToken string, err error) |
| } |
| |
| // PageInfo supports pagination. See the google.golang.org/api/iterator package for details. |
| func (it *SubscriptionIterator) 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 *SubscriptionIterator) Next() (*pubsublitepb.Subscription, error) { |
| var item *pubsublitepb.Subscription |
| if err := it.nextFunc(); err != nil { |
| return item, err |
| } |
| item = it.items[0] |
| it.items = it.items[1:] |
| return item, nil |
| } |
| |
| func (it *SubscriptionIterator) bufLen() int { |
| return len(it.items) |
| } |
| |
| func (it *SubscriptionIterator) takeBuf() interface{} { |
| b := it.items |
| it.items = nil |
| return b |
| } |
| |
| // TopicIterator manages a stream of *pubsublitepb.Topic. |
| type TopicIterator struct { |
| items []*pubsublitepb.Topic |
| 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 []*pubsublitepb.Topic, nextPageToken string, err error) |
| } |
| |
| // PageInfo supports pagination. See the google.golang.org/api/iterator package for details. |
| func (it *TopicIterator) 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 *TopicIterator) Next() (*pubsublitepb.Topic, error) { |
| var item *pubsublitepb.Topic |
| if err := it.nextFunc(); err != nil { |
| return item, err |
| } |
| item = it.items[0] |
| it.items = it.items[1:] |
| return item, nil |
| } |
| |
| func (it *TopicIterator) bufLen() int { |
| return len(it.items) |
| } |
| |
| func (it *TopicIterator) takeBuf() interface{} { |
| b := it.items |
| it.items = nil |
| return b |
| } |