स्प्रिंग में अनुकूलन निर्भरता का अनुकूलन

@Aspect @Component @Slf4j public class RestrictionAspect {    private final Predicate<String> ipIsAllowed;    public RestrictionAspect(@NonNull final Predicate<String> ipIsAllowed) {        this.ipIsAllowed = ipIsAllowed;    }    @Before("execution(public * com.github.monosoul.fortuneteller.web.*.*(..))")    public void checkAccess() {        val ip = getRequestSourceIp();       log.debug("Source IP: {}", ip);        if (!ipIsAllowed.test(ip)) {            throw new AccessDeniedException(format("Access for IP [%s] is denied", ip));        }    }    private String getRequestSourceIp() {        val requestAttributes = currentRequestAttributes();        Assert.state(requestAttributes instanceof ServletRequestAttributes,                "RequestAttributes needs to be a ServletRequestAttributes");        val request = ((ServletRequestAttributes) requestAttributes).getRequest();        return request.getRemoteAddr();    } } 

 @Slf4j @RestController @RequestMapping( value = "/horoscope", produces = APPLICATION_JSON_UTF8_VALUE ) public class PersonalizedHoroscopeTellController { private final HoroscopeTeller horoscopeTeller; private final Function<String, ZodiacSign> zodiacSignConverter; private final Function<String, String> nameNormalizer; public PersonalizedHoroscopeTellController( final HoroscopeTeller horoscopeTeller, final Function<String, ZodiacSign> zodiacSignConverter, final Function<String, String> nameNormalizer ) { this.horoscopeTeller = horoscopeTeller; this.zodiacSignConverter = zodiacSignConverter; this.nameNormalizer = nameNormalizer; } @GetMapping(value = "/tell/personal/{name}/{sign}") public PersonalizedHoroscope tell(@PathVariable final String name, @PathVariable final String sign) { log.info("Received name: {}; sign: {}", name, sign); return PersonalizedHoroscope.builder() .name( nameNormalizer.apply(name) ) .horoscope( horoscopeTeller.tell( zodiacSignConverter.apply(sign) ) ) .build(); } } 

 @SpringJUnitConfig public class PersonalizedHoroscopeTellControllerTest { private static final int LIMIT = 10; @Autowired private PersonalizedHoroscopeTellController controller; @Autowired private Predicate<String> ipIsAllowed; @Test void doNothingWhenAllowed() { when(ipIsAllowed.test(anyString())).thenReturn(true); controller.tell(randomAlphabetic(LIMIT), randomAlphabetic(LIMIT)); } @Test void throwExceptionWhenNotAllowed() { when(ipIsAllowed.test(anyString())).thenReturn(false); assertThatThrownBy(() -> controller.tell(randomAlphabetic(LIMIT), randomAlphabetic(LIMIT))) .isInstanceOf(AccessDeniedException.class); } @Configuration @Import(AspectConfiguration.class) @EnableAspectJAutoProxy public static class Config { @Bean public PersonalizedHoroscopeTellController personalizedHoroscopeTellController( final HoroscopeTeller horoscopeTeller, final Function<String, ZodiacSign> zodiacSignConverter, final Function<String, String> nameNormalizer ) { return new PersonalizedHoroscopeTellController(horoscopeTeller, zodiacSignConverter, nameNormalizer); } @Bean public HoroscopeTeller horoscopeTeller() { return mock(HoroscopeTeller.class); } @Bean public Function<String, ZodiacSign> zodiacSignConverter() { return mock(Function.class); } @Bean public Function<String, String> nameNormalizer() { return mock(Function.class); } } } 

 @SpringJUnitConfig public class PersonalizedHoroscopeTellControllerTest { private static final int LIMIT = 10; @MockBean private HoroscopeTeller horoscopeTeller; @MockBean private Function<String, ZodiacSign> zodiacSignConverter; @MockBean private Function<String, String> nameNormalizer; @MockBean private Predicate<String> ipIsAllowed; @Autowired private PersonalizedHoroscopeTellController controller; @Test void doNothingWhenAllowed() { when(ipIsAllowed.test(anyString())).thenReturn(true); controller.tell(randomAlphabetic(LIMIT), randomAlphabetic(LIMIT)); } @Test void throwExceptionWhenNotAllowed() { when(ipIsAllowed.test(anyString())).thenReturn(false); assertThatThrownBy(() -> controller.tell(randomAlphabetic(LIMIT), randomAlphabetic(LIMIT))) .isInstanceOf(AccessDeniedException.class); } @Configuration @Import({PersonalizedHoroscopeTellController.class, RestrictionAspect.class, RequestContextHolderConfigurer.class}) @EnableAspectJAutoProxy public static class Config { } } 

 @SpringJUnitConfig @ContextConfiguration(classes = AspectConfiguration.class) @TestExecutionListeners(listeners = AutomockTestExecutionListener.class, mergeMode = MERGE_WITH_DEFAULTS) public class PersonalizedHoroscopeTellControllerTest { private static final int LIMIT = 10; @Automocked private PersonalizedHoroscopeTellController controller; @Autowired private Predicate<String> ipIsAllowed; @Test void doNothingWhenAllowed() { when(ipIsAllowed.test(anyString())).thenReturn(true); controller.tell(randomAlphabetic(LIMIT), randomAlphabetic(LIMIT)); } @Test void throwExceptionWhenNotAllowed() { when(ipIsAllowed.test(anyString())).thenReturn(false); assertThatThrownBy(() -> controller.tell(randomAlphabetic(LIMIT), randomAlphabetic(LIMIT))) .isInstanceOf(AccessDeniedException.class); } } 

 @Slf4j public class AutomockTestExecutionListener implements TestExecutionListener, Ordered { @Override public int getOrder() { return 1900; } @Override public void prepareTestInstance(final TestContext testContext) { val beanFactory = ((DefaultListableBeanFactory) testContext.getApplicationContext().getAutowireCapableBeanFactory()); setByNameCandidateResolver(beanFactory); for (val field : testContext.getTestClass().getDeclaredFields()) { if (field.getAnnotation(Automocked.class) == null) { continue; } log.debug("Performing automocking for the field: {}", field.getName()); makeAccessible(field); setField( field, testContext.getTestInstance(), createBeanWithMocks(findConstructorToAutomock(field.getType()), beanFactory) ); } } private void setByNameCandidateResolver(final DefaultListableBeanFactory beanFactory) { if ((beanFactory.getAutowireCandidateResolver() instanceof AutomockedBeanByNameAutowireCandidateResolver)) { return; } beanFactory.setAutowireCandidateResolver( new AutomockedBeanByNameAutowireCandidateResolver(beanFactory.getAutowireCandidateResolver()) ); } private Constructor<?> findConstructorToAutomock(final Class<?> clazz) { log.debug("Looking for suitable constructor of {}", clazz.getCanonicalName()); Constructor<?> fallBackConstructor = clazz.getDeclaredConstructors()[0]; for (val constructor : clazz.getDeclaredConstructors()) { if (constructor.getParameterTypes().length > fallBackConstructor.getParameterTypes().length) { fallBackConstructor = constructor; } val autowired = getAnnotation(constructor, Autowired.class); if (autowired != null) { return constructor; } } return fallBackConstructor; } private <T> T createBeanWithMocks(final Constructor<T> constructor, final DefaultListableBeanFactory beanFactory) { createMocksForParameters(constructor, beanFactory); val clazz = constructor.getDeclaringClass(); val beanName = forClass(clazz).toString(); log.debug("Creating bean {}", beanName); if (!beanFactory.containsBean(beanName)) { val bean = beanFactory.createBean(clazz); beanFactory.registerSingleton(beanName, bean); } return beanFactory.getBean(beanName, clazz); } private <T> void createMocksForParameters(final Constructor<T> constructor, final DefaultListableBeanFactory beanFactory) { log.debug("{} is going to be used for auto mocking", constructor); val constructorArgsAmount = constructor.getParameterTypes().length; for (int i = 0; i < constructorArgsAmount; i++) { val parameterType = forConstructorParameter(constructor, i); val beanName = parameterType.toString(); if (!beanFactory.containsBean(beanName)) { beanFactory.registerSingleton( beanName, mock(parameterType.resolve(), withSettings().stubOnly()) ); } log.debug("Mocked {}", beanName); } } } 

 @Override public boolean isAutowireCandidate(BeanDefinitionHolder beanDefinitionHolder, DependencyDescriptor descriptor) { val dependencyType = descriptor.getResolvableType().resolve(); val dependencyTypeName = descriptor.getResolvableType().toString(); val candidateBeanDefinition = (AbstractBeanDefinition) beanDefinitionHolder.getBeanDefinition(); val candidateTypeName = beanDefinitionHolder.getBeanName(); if (candidateTypeName.equals(dependencyTypeName) && candidateBeanDefinition.getBeanClass() != null) { return true; } return candidateResolver.isAutowireCandidate(beanDefinitionHolder, descriptor); } 

 @Configuration public class DomainConfig { @Bean public FortuneTeller fortuneTeller( final Map<FortuneRequest, FortuneResponse> cache, final FortuneResponseRepository fortuneResponseRepository, final Function<FortuneRequest, PersonalData> personalDataExtractor, final PersonalDataRepository personalDataRepository ) { return new LoggingFortuneTeller( new CachingFortuneTeller( new Globa(fortuneResponseRepository, personalDataExtractor, personalDataRepository), cache ) ); } @Bean public HoroscopeTeller horoscopeTeller( final Map<ZodiacSign, Horoscope> cache, final HoroscopeRepository horoscopeRepository ) { return new LoggingHoroscopeTeller( new CachingHoroscopeTeller( new Gypsy(horoscopeRepository), cache ) ); } } 

 @Primary @Component public final class LoggingFortuneTeller implements FortuneTeller { private final FortuneTeller internal; private final Logger logger; public LoggingFortuneTeller( @Qualifier("cachingFortuneTeller") @NonNull final FortuneTeller internal ) { this.internal = internal; this.logger = getLogger(internal.getClass()); } 

 @Decorator(CACHING) @Component public final class CachingFortuneTeller implements FortuneTeller { private final FortuneTeller internal; private final Map<FortuneRequest, FortuneResponse> cache; public CachingFortuneTeller( @Decorator(NOT_DECORATOR) final FortuneTeller internal, final Map<FortuneRequest, FortuneResponse> cache ) { this.internal = internal; this.cache = cache; } 

 @Configuration public class DomainConfig { @Bean public OrderConfig<FortuneTeller> fortuneTellerOrderConfig() { return () -> asList( LoggingFortuneTeller.class, CachingFortuneTeller.class, Globa.class ); } @Bean public OrderConfig<HoroscopeTeller> horoscopeTellerOrderConfig() { return () -> asList( LoggingHoroscopeTeller.class, CachingHoroscopeTeller.class, Gypsy.class ); } } 

 @Component class DecoratorAutowireCandidateResolverConfigurer implements BeanFactoryPostProcessor { @Override public void postProcessBeanFactory(final ConfigurableListableBeanFactory configurableListableBeanFactory) throws BeansException { Assert.state(configurableListableBeanFactory instanceof DefaultListableBeanFactory, "BeanFactory needs to be a DefaultListableBeanFactory"); val beanFactory = (DefaultListableBeanFactory) configurableListableBeanFactory; beanFactory.setAutowireCandidateResolver( new DecoratorAutowireCandidateResolver(beanFactory.getAutowireCandidateResolver()) ); } } 

 @RequiredArgsConstructor public final class DecoratorAutowireCandidateResolver implements AutowireCandidateResolver { private final AutowireCandidateResolver resolver; @Override public boolean isAutowireCandidate(final BeanDefinitionHolder bdHolder, final DependencyDescriptor descriptor) { val dependentType = descriptor.getMember().getDeclaringClass(); val dependencyType = descriptor.getDependencyType(); val candidateBeanDefinition = (AbstractBeanDefinition) bdHolder.getBeanDefinition(); if (dependencyType.isAssignableFrom(dependentType)) { val candidateQualifier = candidateBeanDefinition.getQualifier(OrderQualifier.class.getTypeName()); if (candidateQualifier != null) { return dependentType.getTypeName().equals(candidateQualifier.getAttribute("value")); } } return resolver.isAutowireCandidate(bdHolder, descriptor); }