How to convert a Uni<Response> object into a String?

Question

I am using a Quarkus application which have a dependent client service which pass me the response as a Uni object type

Uni<Response> response = clinetService.someMethod(id);

Now I need to pass this response to a another client cache service as a String:

cacheService(id, mapObj, responseObjectAsAString);

So I need to pass this converted String value to the above method.

I tried multiple ways to serialize/convert it into a String using ObjectMapper writeValueAsString(obj) method or Gson class .toJson(obj), but nothing worked.

Any suggestion will be very helpful.

Response is a class of jakarta.ws.rs.core library. clientService is an object of a class provided by a client service, output of which is an object of type Uni<Response>. — abhishek narayan
– abhishek narayan, Commented Aug 30, 2023 at 10:39

Rob Spoor · Accepted Answer · 2023-08-30 12:41:21Z

0

You actually have to solve two tasks:

Convert the Uni<Response> into a Uni<String>
Convert the Uni<String> into a String

The first can probably be as easy as this:

Uni<String> body = response.map(r -> r.readEntity(String.class));

The second can be done using UniAwait. A full example:

String body = response.map(r -> r.readEntity(String.class))
        .await()
        .indefinitely();

You can also use atMost instead of indefinitely, and you can put asOptional() between await() and indefinitely() to return an Optional<String> instead.

answered Aug 30, 2023 at 12:41

Rob Spoor

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