Quarkus中的对话

Question

我正在将一个应用程序从Thorntail迁移到Quarkus。它在一个bean中使用会话范围注释，该bean在所有对它感兴趣的服务的rest api请求期间提供令牌信息。但是在Quarkus的文档中，它说对话范围没有实现。有没有类似的功能我可以使用？

下面是我想做的：

@Path
@ApplicationScoped
public class FruitsResource {

    @Inject FruitsService fruitsService;

    @POST
    public int post (Fruit fruit) {
         return fruitsService.post(fruit);
    }
}

@Provider
@ApplicationScoped
private class AuthorizationFilter implements ContainerRequestFilter {

    @Inject AuthorizationHolder authorizationHolder;

    @Override
    public void filter (ContainerRequestContext request) {
        String token = request.getHeaderString(HttpHeaders.AUTHORIZATION);
        Authorization authorization = createAuthorizationFromToken(token);
        authorizationHolder.setAuthorization(authorization);
    }
}

@ConversationScoped
private class AuthorizationHolder {

    private Authorization authorization;

    @Produces
    public Authorization getAuthorization () {
        return authorization;
    }

    public void setAuthorization (Authorization authorization) {
        this.authorization = authorization;
    }
}

@ApplicationScoped
private class FruitsService {

    @Inject Authorization authorization;
    @Inject EntityManager entityManager;

    @Transactional
    public void post (Fruit fruit) {
         // do some complex validation with the authorization object
         ...

         // persist object
         entityManager.persist(fruit);
         entityManager.flush();
         return fruit.getId();
    }
}

Answer 1

每个请求中是否存在authorization标头？我认为是（或者应该是），在这种情况下，只使用@requestscoped而不是@conversationscoped就可以了。无论如何，这可能是最好的做法。

如果头仅存在于“first”请求中，并且同一会话中的后续请求可以重用该令牌，那么您可以将@conversationscoped替换为@sessionscoped。不过，我认为在所有请求中强制显示头会更好。

最后，如果您真的想要模拟对话，您可以这样做（没有测试，甚至没有在IDE中编写，只是从我的头顶）：

@SessionScoped
private class AuthorizationHolder {
    private ConcurrentMap<String, Authorization> authorizations = new ConcurrentHashMap<>();

    public Authorization getAuthorization(ContainerRequestContext request) {
        return authorizations.get(getConversationId(request));
    }

    public void setAuthorization(ContainerRequestContext request, Authorization authorization) {
        this.authorizations.put(getConversationId(request), authorization);
    }

    private String getConversationId(ContainerRequestContext request) {
        MultivaluedMap<String, String> query = request.getUriInfo().getQueryParameters();
        return query.getFirst("cid");
    }
}

但是，正如我上面所说的，我确实认为您应该使bean@requestscoped并强制客户机在每个请求中发送authorization头。