How Quarkus Integrates MicroProfile and Spring

public PersonSpringController(
   PersonSpringRepository personRepository,  // injected      
   PersonSpringMPService personService) {    // injected
      this.personRepository = personRepository;
      this.personService = personService;
}

@Autowired
@RestClient
SalutationRestClient salutationRestClient;

@Value("${fallbackSalutation}")
String fallbackSalutation;

@Configuration
public class AppConfiguration {
   @Bean(name = "capitalizeFunction")
   public StringFunction capitalizer() {
      return String::toUpperCase;
   }
}

@Component("noopFunction")
public class NoOpSingleStringFunction implements StringFunction {
   @Override
   public String apply(String s) {
      return s;
   }
}

@Service
public class MessageProducer {
   @Value("${greeting.message}")
   String message;

   public String getPrefix() {
      return message;
   }
}

@RestController
@RequestMapping("/person")
public class PersonSpringController {
   ...
   ...
   ...
}

@GetMapping(path = "/greet/{id}",
   produces = "text/plain")
   public String greetPerson(
   @PathVariable(name = "id") long id) {
   ...
   ...
   ...
}

public interface PersonRepository
         extends JpaRepository,
                 PersonFragment {
   ...
}

public class PersonRepository extends 

    Repository {

    Person save(Person entity);

    Optional findById(Person entity);
}

public interface PersonRepository
         extends JpaRepository,
                 PersonFragment {
   ...
}

public interface PersonRepository extends CrudRepository {

    List findByName(String name);
    
    Person findByNameBySsn(String ssn);
    
    Optional 
       findByNameBySsnIgnoreCase(String ssn);

    Boolean existsBookByYearOfBirthBetween(
            Integer start, Integer end);
}

public interface MovieRepository
         extends CrudRepository {

    Movie findFirstByOrderByDurationDesc();

    @Query("select m from Movie m where m.rating = ?1")
    Iterator findByRating(String rating);

    @Query("from Movie where title = ?1")
    Movie findByTitle(String title);
}

@Asynchronous
@Retry
public Future<String> getSalutation() {
   ...
   return future;
}

@Bulkhead(5)
public void fiveConcurrent() {
   makeRemoteCall(); //...
}

@CircuitBreaker(delay=500   // milliseconds
   failureRatio = .75,
   requestVolumeThreshold = 20,
   successThreshold = 5)
@Fallback(fallbackMethod = "fallback")
public String getSalutation() {
   makeRemoteCall(); //...
}

@Timeout(500) // milliseconds
@Fallback(fallbackMethod = "fallback")
public String getSalutation() {
   makeRemoteCall(); //...
}

public String fallback() {
   return "hello";
}

@Retry(maxRetries=3)
public String getSalutation() {
   makeRemoteCall(); //...
}

@Timeout(value = 500 )   // milliseconds
@Fallback(fallbackMethod = "fallback")
public String getSalutation() {
   makeRemoteCall(); //...
}

@Liveness
public class MyHC implements HealthCheck {
  public HealthCheckResponse call() {

   ...
   return HealthCheckResponse
     .named("myHCProbe")
     .status(ready ? true:false)
     .withData("mydata", data)
     .build();  
}

@Readiness
public class MyHC implements HealthCheck {
  public HealthCheckResponse call() {

   ...
   return HealthCheckResponse
     .named("myHCProbe")
     .status(live ? true:false)
     .withData("mydata", data)
     .build();  
}

@Counted(name = "fallbackCounter", 
  displayName = "Fallback Counter", 
  description = "Fallback Counter")
public String salutationFallback() {
   return fallbackSalutation;
}

@ConcurrentGuage(
  name = "fallbackConcurrentGauge", 
  displayName="Fallback Concurrent", 
  description="Fallback Concurrent")
public String salutationFallback() {
   return fallbackSalutation;
}

@Metered(name = "FallbackGauge",
   displayName="Fallback Gauge",
   description="Fallback frequency")
public String salutationFallback() {
   return fallbackSalutation;
}

@Metered(name = "MeteredFallback",
   displayName="Metered Fallback",
   description="Fallback frequency")
public String salutationFallback() {
   return fallbackSalutation;
}

@Metric
@Metered(name = "MeteredFallback",
   displayName="Metered Fallback",
   description="Fallback frequency")
public String salutationFallback() {
   return fallbackSalutation;
}

@Timed(name = "TimedFallback",
   displayName="Timed Fallback",
   description="Fallback delay")
public String salutationFallback() {
   return fallbackSalutation;
}

@RegisterRestClient
@Path("/")
public interface MyRestClient {
    @GET
    @Produces(MediaType.TEXT_PLAIN)
    public String getSalutation();
}

@Autowired // or @Inject
@RestClient
MyRestClient restClient;

System.out.println(
   restClient.getSalutation());

application.properties:
org.example.MyRestClient/mp-rest/url=
   http://localhost:8081/myendpoint