JAX-RS AsyncResponse.resume () with location header

Question

UPDATE

A few additional digging showed that the thrown exceptions were removed, and the actual problem is that the thrown UriInfocannot be resolved in the AsyncResponse stream!

Access to @Context UriInfo uriInfo;during AsyncResponse.resume()gives the following message LoggableFailure:

Unable to find context data like: javax.ws.rs.core.UriInfo

ORIGINAL

According to RFC 7231 HTTP / 1.1 Semantics and Control , a POSTmust return 201 CREATEDand provide a new resource location in the header:

the source server SHOULD send a 201 (Created) response containing a location header field that provides an identifier for the primary resource created (Section 7.1.2) and a view that describes the status of the request, referencing the new resource (s).

When writing a synchronous server, REST javax.ws.rs.core.Responseoffers an abbreviation Response.created()that does just that.

I would save a new object, build URIand return

return Response.created(createURL(created)).build();

However, when I switch to an asynchronous approach, using

@Suspended javax.ws.rs.container.AsyncResponse

The HTTP request on the client will hang indefinitely:

@POST
public void createUser(@Valid User user, @Suspended AsyncResponse asyncResponse) {
    executorService.submit(() -> {
        User created = userService.create(user);
        asyncResponse.resume(
                Response.created(createURL(created)).build()
        );
    });
}

Through a trial error, I found that the changed location header is responding. If I return my object and install 201 CREATEDwithout touching the header, the request will eventually resolve:

@POST
public void createUser(@Valid User user, @Suspended AsyncResponse asyncResponse) {
    executorService.submit(() -> {
        User created = userService.create(user);
        asyncResponse.resume(
                Response.status(Status.CREATED).entity(created).build()  //this works
                //Response.created(createURL(created)).build()
        );
    });
}

So what's the problem? I do not understand the concept?

RestEasy GlassFish4.1 , !

- , .

Answer 1

, - ​​ :

, @Context UriInfo uriInfo, .getAbsolutePathBuilder().

, , UriInfo, .

, , Runnable, uriInfo.getAbsolutePathBuilder(), - , , .

:

, , .getAbsolutePathBuilder(), . UriBuilder :

@POST
public void createUser(@Valid User user, @Suspended AsyncResponse asyncResponse) {
    UriBuilder ub = uriInfo.getAbsolutePathBuilder();

    executorService.submit(() -> {
        User created = userService.create(user);
        asyncResponse.resume(
                Response.created(createURL(ub, created)).build()
        );
    });
}

private URI createURL(UriBuilder builder, ApiRepresentation entity) {
    return builder.path(entity.getId().toString()).build();
}