org.apache.pulsar.broker.systopic

Interface SystemTopicClient.Reader<T>

Enclosing interface:

SystemTopicClient<T>

public static interface SystemTopicClient.Reader<T>

Reader for system topic.

Method Summary

Modifier and Type	Method and Description
void	close() Close the system topic reader.
CompletableFuture<Void>	closeAsync() Close the reader of the system topic asynchronously.
SystemTopicClient<T>	getSystemTopic() Get the system topic of the reader.
boolean	hasMoreEvents() Check has more events available for the reader.
CompletableFuture<Boolean>	hasMoreEventsAsync() Check has more events available for the reader asynchronously.
org.apache.pulsar.client.api.Message<T>	readNext() Read event from system topic.
CompletableFuture<org.apache.pulsar.client.api.Message<T>>	readNextAsync() Async read event from system topic.

Method Detail

readNext

org.apache.pulsar.client.api.Message<T> readNext()
                                          throws org.apache.pulsar.client.api.PulsarClientException

Read event from system topic.

Returns:

pulsar event

Throws:

org.apache.pulsar.client.api.PulsarClientException

readNextAsync

CompletableFuture<org.apache.pulsar.client.api.Message<T>> readNextAsync()

Async read event from system topic.

Returns:

pulsar event future

hasMoreEvents

boolean hasMoreEvents()
               throws org.apache.pulsar.client.api.PulsarClientException

Check has more events available for the reader.

Returns:

true if has remaining events, otherwise false

Throws:

org.apache.pulsar.client.api.PulsarClientException

hasMoreEventsAsync

CompletableFuture<Boolean> hasMoreEventsAsync()

Check has more events available for the reader asynchronously.

Returns:

true if has remaining events, otherwise false

close

void close()
    throws IOException

Close the system topic reader.

Throws:

IOException

closeAsync

CompletableFuture<Void> closeAsync()

Close the reader of the system topic asynchronously.

getSystemTopic

SystemTopicClient<T> getSystemTopic()

Get the system topic of the reader.

Returns:

system topic