@Generated(value="software.amazon.awssdk:codegen") public class ListRolesPublisher extends Object implements SdkPublisher<ListRolesResponse>
Represents the output for the
IAMAsyncClient.listRolesPaginator(software.amazon.awssdk.services.iam.model.ListRolesRequest)
operation which is a paginated operation. This class is a type of Publisher
which can be
used to provide a sequence of ListRolesResponse
response pages as
per demand from the subscriber.
When the operation is called, an instance of this class is returned. At this point, no service calls are made yet and
so there is no guarantee that the request is valid. If there are errors in your request, you will see the failures
only after you start streaming the data. The subscribe method should be called as a request to start streaming data.
For more info, see Publisher.subscribe(org.reactivestreams.Subscriber)
. Each call to the
subscribe method will result in a new Subscription
i.e., a new contract to stream data
from the starting request.
The following are few ways to use the response class:
1) Using the forEach helper method
software.amazon.awssdk.services.iam.paginators.ListRolesPublisher publisher = client.listRolesPaginator(request);
CompletableFuture<Void> future = publisher.forEach(res -> { // Do something with the response });
future.get();
2) Using a custom subscriber
software.amazon.awssdk.services.iam.paginators.ListRolesPublisher publisher = client.listRolesPaginator(request);
publisher.subscribe(new Subscriber<software.amazon.awssdk.services.iam.model.ListRolesResponse>() {
public void onSubscribe(org.reactivestreams.Subscriber subscription) { //... };
public void onNext(software.amazon.awssdk.services.iam.model.ListRolesResponse response) { //... };
});
As the response is a publisher, it can work well with third party reactive streams implementations like RxJava2.
Note: If you prefer to have control on service calls, use the
#listRoles(software.amazon.awssdk.services.iam.model.ListRolesRequest)
operation.
Constructor and Description |
---|
ListRolesPublisher(IAMAsyncClient client,
ListRolesRequest firstRequest) |
Modifier and Type | Method and Description |
---|---|
ListRolesPublisher |
resume(ListRolesResponse lastSuccessfulPage)
A helper method to resume the pages in case of unexpected failures.
|
SdkPublisher<Role> |
roles()
Returns a publisher that can be used to get a stream of data.
|
void |
subscribe(org.reactivestreams.Subscriber<? super ListRolesResponse> subscriber) |
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
forEach
public ListRolesPublisher(IAMAsyncClient client, ListRolesRequest firstRequest)
public void subscribe(org.reactivestreams.Subscriber<? super ListRolesResponse> subscriber)
subscribe
in interface org.reactivestreams.Publisher<ListRolesResponse>
public final SdkPublisher<Role> roles()
Consumer
and then applies that consumer to each response returned by the service.public final ListRolesPublisher resume(ListRolesResponse lastSuccessfulPage)
A helper method to resume the pages in case of unexpected failures. The method takes the last successful response
page as input and returns an instance of ListRolesPublisher
that can be used to retrieve the consecutive
pages that follows the input page.
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