Class TopicAdminClient (2.21.0)

A service to manipulate topics.

Equality

Instances of this class created via copy-construction or copy-assignment always compare equal. Instances created with equal std::shared_ptr<*Connection> objects compare equal. Objects that compare equal share the same underlying resources.

Performance

Creating a new instance of this class is a relatively expensive operation, new objects establish new connections to the service. In contrast, copy-construction, move-construction, and the corresponding assignment operations are relatively efficient as the copies share all underlying resources.

Thread Safety

Concurrent access to different instances of this class, even if they compare equal, is guaranteed to work. Two or more threads operating on the same instance of this class is not guaranteed to work. Since copy-construction and move-construction is a relatively efficient operation, consider using such a copy when using this class from multiple threads.

Constructors

TopicAdminClient(TopicAdminClient const &)

Copy and move support

Parameter
Name	Description
	`TopicAdminClient const &`

TopicAdminClient(TopicAdminClient &&)

Copy and move support

Parameter
Name	Description
	`TopicAdminClient &&`

TopicAdminClient(std::shared_ptr< TopicAdminConnection >, Options)

Parameters
Name	Description
`connection`	`std::shared_ptr< TopicAdminConnection >`
`opts`	`Options`

Operators

operator=(TopicAdminClient const &)

Copy and move support

Parameter
Name	Description
	`TopicAdminClient const &`

Returns
Type	Description
`TopicAdminClient &`

operator=(TopicAdminClient &&)

Copy and move support

Parameter
Name	Description
	`TopicAdminClient &&`

Returns
Type	Description
`TopicAdminClient &`

Functions

CreateTopic(std::string const &, Options)

Creates the given topic with the given name.

See the resource name rules.

Parameters
Name	Description
`name`	`std::string const &` Required. The name of the topic. It must have the format `"projects/{project}/topics/{topic}"`. `{topic}` must start with a letter, and contain only letters (`[A-Za-z]`), numbers (`[0-9]`), dashes (`-`), underscores (`_`), periods (`.`), tildes (`~`), plus (`+`) or percent signs (`%`). It must be between 3 and 255 characters in length, and it must not start with `"goog"`.
`opts`	`Options` Optional. Override the class-level options, such as retry and backoff policies.

Returns
Type	Description
`StatusOr< google::pubsub::v1::Topic >`	the result of the RPC. The response message type (google.pubsub.v1.Topic) is mapped to a C++ class using the Protobuf mapping rules. If the request fails, the `StatusOr` contains the error details.

CreateTopic(google::pubsub::v1::Topic const &, Options)

Creates the given topic with the given name.

See the resource name rules.

Parameters
Name	Description
`request`	`google::pubsub::v1::Topic const &` Unary RPCs, such as the one wrapped by this function, receive a single `request` proto message which includes all the inputs for the RPC. In this case, the proto message is a google.pubsub.v1.Topic. Proto messages are converted to C++ classes by Protobuf, using the Protobuf mapping rules.
`opts`	`Options` Optional. Override the class-level options, such as retry and backoff policies.

Returns
Type	Description
`StatusOr< google::pubsub::v1::Topic >`	the result of the RPC. The response message type (google.pubsub.v1.Topic) is mapped to a C++ class using the Protobuf mapping rules. If the request fails, the `StatusOr` contains the error details.

UpdateTopic(google::pubsub::v1::Topic const &, google::protobuf::FieldMask const &, Options)

Updates an existing topic by updating the fields specified in the update mask.

Note that certain properties of a topic are not modifiable.

Parameters
Name	Description
`topic`	`google::pubsub::v1::Topic const &` Required. The updated topic object.
`update_mask`	`google::protobuf::FieldMask const &` Required. Indicates which fields in the provided topic to update. Must be specified and non-empty. Note that if `update_mask` contains "message_storage_policy" but the `message_storage_policy` is not set in the `topic` provided above, then the updated value is determined by the policy configured at the project or organization level.
`opts`	`Options` Optional. Override the class-level options, such as retry and backoff policies.

Returns
Type	Description
`StatusOr< google::pubsub::v1::Topic >`	the result of the RPC. The response message type (google.pubsub.v1.Topic) is mapped to a C++ class using the Protobuf mapping rules. If the request fails, the `StatusOr` contains the error details.

UpdateTopic(google::pubsub::v1::UpdateTopicRequest const &, Options)

Updates an existing topic by updating the fields specified in the update mask.

Note that certain properties of a topic are not modifiable.

Parameters
Name	Description
`request`	`google::pubsub::v1::UpdateTopicRequest const &` Unary RPCs, such as the one wrapped by this function, receive a single `request` proto message which includes all the inputs for the RPC. In this case, the proto message is a google.pubsub.v1.UpdateTopicRequest. Proto messages are converted to C++ classes by Protobuf, using the Protobuf mapping rules.
`opts`	`Options` Optional. Override the class-level options, such as retry and backoff policies.

Returns
Type	Description
`StatusOr< google::pubsub::v1::Topic >`	the result of the RPC. The response message type (google.pubsub.v1.Topic) is mapped to a C++ class using the Protobuf mapping rules. If the request fails, the `StatusOr` contains the error details.

GetTopic(std::string const &, Options)

Gets the configuration of a topic.

Parameters
Name	Description
`topic`	`std::string const &` Required. The name of the topic to get. Format is `projects/{project}/topics/{topic}`.
`opts`	`Options` Optional. Override the class-level options, such as retry and backoff policies.

Returns
Type	Description
`StatusOr< google::pubsub::v1::Topic >`	the result of the RPC. The response message type (google.pubsub.v1.Topic) is mapped to a C++ class using the Protobuf mapping rules. If the request fails, the `StatusOr` contains the error details.

GetTopic(google::pubsub::v1::GetTopicRequest const &, Options)

Gets the configuration of a topic.

Parameters
Name	Description
`request`	`google::pubsub::v1::GetTopicRequest const &` Unary RPCs, such as the one wrapped by this function, receive a single `request` proto message which includes all the inputs for the RPC. In this case, the proto message is a google.pubsub.v1.GetTopicRequest. Proto messages are converted to C++ classes by Protobuf, using the Protobuf mapping rules.
`opts`	`Options` Optional. Override the class-level options, such as retry and backoff policies.

Returns
Type	Description
`StatusOr< google::pubsub::v1::Topic >`	the result of the RPC. The response message type (google.pubsub.v1.Topic) is mapped to a C++ class using the Protobuf mapping rules. If the request fails, the `StatusOr` contains the error details.

ListTopics(std::string const &, Options)

Lists matching topics.

Parameters
Name	Description
`project`	`std::string const &` Required. The name of the project in which to list topics. Format is `projects/{project-id}`.
`opts`	`Options` Optional. Override the class-level options, such as retry and backoff policies.

Returns

Type Description

StreamRange< google::pubsub::v1::Topic >

a StreamRange to iterate of the results. See the documentation of this type for details. In brief, this class has begin() and end() member functions returning a iterator class meeting the input iterator requirements. The value type for this iterator is a StatusOr as the iteration may fail even after some values are retrieved successfully, for example, if there is a network disconnect. An empty set of results does not indicate an error, it indicates that there are no resources meeting the request criteria. On a successful iteration the StatusOr<T> contains elements of type google.pubsub.v1.Topic, or rather, the C++ class generated by Protobuf from that type. Please consult the Protobuf documentation for details on the Protobuf mapping rules.

ListTopics(google::pubsub::v1::ListTopicsRequest, Options)

Lists matching topics.

Parameters
Name	Description
`request`	`google::pubsub::v1::ListTopicsRequest` Unary RPCs, such as the one wrapped by this function, receive a single `request` proto message which includes all the inputs for the RPC. In this case, the proto message is a google.pubsub.v1.ListTopicsRequest. Proto messages are converted to C++ classes by Protobuf, using the Protobuf mapping rules.
`opts`	`Options` Optional. Override the class-level options, such as retry and backoff policies.

Returns

Type Description

StreamRange< google::pubsub::v1::Topic >

ListTopicSubscriptions(std::string const &, Options)

Lists the names of the attached subscriptions on this topic.

Parameters
Name	Description
`topic`	`std::string const &` Required. The name of the topic that subscriptions are attached to. Format is `projects/{project}/topics/{topic}`.
`opts`	`Options` Optional. Override the class-level options, such as retry and backoff policies.

Returns

Type Description

StreamRange< std::string >

ListTopicSubscriptions(google::pubsub::v1::ListTopicSubscriptionsRequest, Options)

Lists the names of the attached subscriptions on this topic.

Parameters
Name	Description
`request`	`google::pubsub::v1::ListTopicSubscriptionsRequest` Unary RPCs, such as the one wrapped by this function, receive a single `request` proto message which includes all the inputs for the RPC. In this case, the proto message is a google.pubsub.v1.ListTopicSubscriptionsRequest. Proto messages are converted to C++ classes by Protobuf, using the Protobuf mapping rules.
`opts`	`Options` Optional. Override the class-level options, such as retry and backoff policies.

Returns

Type Description

StreamRange< std::string >

ListTopicSnapshots(std::string const &, Options)

Lists the names of the snapshots on this topic.

Snapshots are used in Seek operations, which allow you to manage message acknowledgments in bulk. That is, you can set the acknowledgment state of messages in an existing subscription to the state captured by a snapshot.

Parameters
Name	Description
`topic`	`std::string const &` Required. The name of the topic that snapshots are attached to. Format is `projects/{project}/topics/{topic}`.
`opts`	`Options` Optional. Override the class-level options, such as retry and backoff policies.

Returns

Type Description

StreamRange< std::string >

ListTopicSnapshots(google::pubsub::v1::ListTopicSnapshotsRequest, Options)

Lists the names of the snapshots on this topic.

Parameters
Name	Description
`request`	`google::pubsub::v1::ListTopicSnapshotsRequest` Unary RPCs, such as the one wrapped by this function, receive a single `request` proto message which includes all the inputs for the RPC. In this case, the proto message is a google.pubsub.v1.ListTopicSnapshotsRequest. Proto messages are converted to C++ classes by Protobuf, using the Protobuf mapping rules.
`opts`	`Options` Optional. Override the class-level options, such as retry and backoff policies.

Returns

Type Description

StreamRange< std::string >

DeleteTopic(std::string const &, Options)

Deletes the topic with the given name.

Returns NOT_FOUND if the topic does not exist. After a topic is deleted, a new topic may be created with the same name; this is an entirely new topic with none of the old configuration or subscriptions. Existing subscriptions to this topic are not deleted, but their topic field is set to _deleted-topic_.

Parameters
Name	Description
`topic`	`std::string const &` Required. Name of the topic to delete. Format is `projects/{project}/topics/{topic}`.
`opts`	`Options` Optional. Override the class-level options, such as retry and backoff policies.

Returns
Type	Description
`Status`	a `Status` object. If the request failed, the status contains the details of the failure.

DeleteTopic(google::pubsub::v1::DeleteTopicRequest const &, Options)

Deletes the topic with the given name.

Parameters
Name	Description
`request`	`google::pubsub::v1::DeleteTopicRequest const &` Unary RPCs, such as the one wrapped by this function, receive a single `request` proto message which includes all the inputs for the RPC. In this case, the proto message is a google.pubsub.v1.DeleteTopicRequest. Proto messages are converted to C++ classes by Protobuf, using the Protobuf mapping rules.
`opts`	`Options` Optional. Override the class-level options, such as retry and backoff policies.

Returns
Type	Description
`Status`	a `Status` object. If the request failed, the status contains the details of the failure.

DetachSubscription(google::pubsub::v1::DetachSubscriptionRequest const &, Options)

Detaches a subscription from this topic.

All messages retained in the subscription are dropped. Subsequent Pull and StreamingPull requests will return FAILED_PRECONDITION. If the subscription is a push subscription, pushes to the endpoint will stop.

Parameters
Name	Description
`request`	`google::pubsub::v1::DetachSubscriptionRequest const &` Unary RPCs, such as the one wrapped by this function, receive a single `request` proto message which includes all the inputs for the RPC. In this case, the proto message is a google.pubsub.v1.DetachSubscriptionRequest. Proto messages are converted to C++ classes by Protobuf, using the Protobuf mapping rules.
`opts`	`Options` Optional. Override the class-level options, such as retry and backoff policies.

Returns
Type	Description
`StatusOr< google::pubsub::v1::DetachSubscriptionResponse >`	the result of the RPC. The response message type (google.pubsub.v1.DetachSubscriptionResponse) is mapped to a C++ class using the Protobuf mapping rules. If the request fails, the `StatusOr` contains the error details.