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Document the need for compilation with -parameters when using @SpyBean and @Cacheable with a key expression that uses a parameter name #13945

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mdeinum opened this issue Jul 30, 2018 · 4 comments
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Document the need for compilation with -parameters when using @SpyBean and @Cacheable with a key expression that uses a parameter name #13945

mdeinum opened this issue Jul 30, 2018 · 4 comments
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@wilkinsona
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type: documentation A documentation update
Milestone
2.0.6

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@mdeinum
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mdeinum commented Jul 30, 2018 •
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Tested with both Spring Boot 1.5.14 and Spring Boot 2.0.3.

When using @SpyBean to investigate method calls on a bean and a method is annotated with @Cacheable this breaks.

@Service
public class OrderService {

    private final Logger logger = LoggerFactory.getLogger(getClass());

    @Cacheable(value="orders", key = "#id + #key.field1")
    public Order find(String id, PartialKey key) {

        double amount = ThreadLocalRandom.current().nextDouble(1000.00);
        Order order = new Order(id, BigDecimal.valueOf(amount));
        logger.info("Created: {}", order);
        return order;
    }
}

The issue is that when using a custom key, the extension/proxy generated by @SpyBean apparently doesn't have the needed debug information anymore. Switching from named parameters to indexed parameters makes it work again.

Exception:

java.lang.IllegalStateException: Failed to load ApplicationContext
	at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:124) ~[spring-test-4.3.18.RELEASE.jar:4.3.18.RELEASE]
	at org.springframework.test.context.support.DefaultTestContext.getApplicationContext(DefaultTestContext.java:83) ~[spring-test-4.3.18.RELEASE.jar:4.3.18.RELEASE]
	at org.springframework.boot.test.mock.mockito.MockitoTestExecutionListener.postProcessFields(MockitoTestExecutionListener.java:110) ~[spring-boot-test-1.5.14.RELEASE.jar:1.5.14.RELEASE]
	at org.springframework.boot.test.mock.mockito.MockitoTestExecutionListener.injectFields(MockitoTestExecutionListener.java:78) ~[spring-boot-test-1.5.14.RELEASE.jar:1.5.14.RELEASE]
	at org.springframework.boot.test.mock.mockito.MockitoTestExecutionListener.prepareTestInstance(MockitoTestExecutionListener.java:48) ~[spring-boot-test-1.5.14.RELEASE.jar:1.5.14.RELEASE]
	at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:230) ~[spring-test-4.3.18.RELEASE.jar:4.3.18.RELEASE]
	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:228) [spring-test-4.3.18.RELEASE.jar:4.3.18.RELEASE]
	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner$1.runReflectiveCall(SpringJUnit4ClassRunner.java:287) [spring-test-4.3.18.RELEASE.jar:4.3.18.RELEASE]
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) [junit-4.12.jar:4.12]
	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.methodBlock(SpringJUnit4ClassRunner.java:289) [spring-test-4.3.18.RELEASE.jar:4.3.18.RELEASE]
	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:247) [spring-test-4.3.18.RELEASE.jar:4.3.18.RELEASE]
	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:94) [spring-test-4.3.18.RELEASE.jar:4.3.18.RELEASE]
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) [junit-4.12.jar:4.12]
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) [junit-4.12.jar:4.12]
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) [junit-4.12.jar:4.12]
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) [junit-4.12.jar:4.12]
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) [junit-4.12.jar:4.12]
	at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61) [spring-test-4.3.18.RELEASE.jar:4.3.18.RELEASE]
	at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70) [spring-test-4.3.18.RELEASE.jar:4.3.18.RELEASE]
	at org.junit.runners.ParentRunner.run(ParentRunner.java:363) [junit-4.12.jar:4.12]
	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:191) [spring-test-4.3.18.RELEASE.jar:4.3.18.RELEASE]
	at org.junit.runner.JUnitCore.run(JUnitCore.java:137) [junit-4.12.jar:4.12]
	at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68) [junit-rt.jar:na]
	at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47) [junit-rt.jar:na]
	at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242) [junit-rt.jar:na]
	at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70) [junit-rt.jar:na]
Caused by: java.lang.IllegalStateException: Failed to execute ApplicationRunner
	at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:726) ~[spring-boot-1.5.14.RELEASE.jar:1.5.14.RELEASE]
	at org.springframework.boot.SpringApplication.callRunners(SpringApplication.java:713) ~[spring-boot-1.5.14.RELEASE.jar:1.5.14.RELEASE]
	at org.springframework.boot.SpringApplication.afterRefresh(SpringApplication.java:703) ~[spring-boot-1.5.14.RELEASE.jar:1.5.14.RELEASE]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:304) ~[spring-boot-1.5.14.RELEASE.jar:1.5.14.RELEASE]
	at org.springframework.boot.test.context.SpringBootContextLoader.loadContext(SpringBootContextLoader.java:121) ~[spring-boot-test-1.5.14.RELEASE.jar:1.5.14.RELEASE]
	at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContextInternal(DefaultCacheAwareContextLoaderDelegate.java:98) ~[spring-test-4.3.18.RELEASE.jar:4.3.18.RELEASE]
	at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:116) ~[spring-test-4.3.18.RELEASE.jar:4.3.18.RELEASE]
	... 25 common frames omitted
Caused by: org.springframework.expression.spel.SpelEvaluationException: EL1007E: Property or field 'field1' cannot be found on null
	at org.springframework.expression.spel.ast.PropertyOrFieldReference.readProperty(PropertyOrFieldReference.java:225) ~[spring-expression-4.3.18.RELEASE.jar:4.3.18.RELEASE]
	at org.springframework.expression.spel.ast.PropertyOrFieldReference.getValueInternal(PropertyOrFieldReference.java:97) ~[spring-expression-4.3.18.RELEASE.jar:4.3.18.RELEASE]
	at org.springframework.expression.spel.ast.PropertyOrFieldReference.access$000(PropertyOrFieldReference.java:47) ~[spring-expression-4.3.18.RELEASE.jar:4.3.18.RELEASE]
	at org.springframework.expression.spel.ast.PropertyOrFieldReference$AccessorLValue.getValue(PropertyOrFieldReference.java:414) ~[spring-expression-4.3.18.RELEASE.jar:4.3.18.RELEASE]
	at org.springframework.expression.spel.ast.CompoundExpression.getValueInternal(CompoundExpression.java:88) ~[spring-expression-4.3.18.RELEASE.jar:4.3.18.RELEASE]
	at org.springframework.expression.spel.ast.OpPlus.getValueInternal(OpPlus.java:85) ~[spring-expression-4.3.18.RELEASE.jar:4.3.18.RELEASE]
	at org.springframework.expression.spel.ast.SpelNodeImpl.getValue(SpelNodeImpl.java:121) ~[spring-expression-4.3.18.RELEASE.jar:4.3.18.RELEASE]
	at org.springframework.expression.spel.standard.SpelExpression.getValue(SpelExpression.java:262) ~[spring-expression-4.3.18.RELEASE.jar:4.3.18.RELEASE]
	at org.springframework.cache.interceptor.CacheOperationExpressionEvaluator.key(CacheOperationExpressionEvaluator.java:117) ~[spring-context-4.3.18.RELEASE.jar:4.3.18.RELEASE]
	at org.springframework.cache.interceptor.CacheAspectSupport$CacheOperationContext.generateKey(CacheAspectSupport.java:739) ~[spring-context-4.3.18.RELEASE.jar:4.3.18.RELEASE]
	at org.springframework.cache.interceptor.CacheAspectSupport.generateKey(CacheAspectSupport.java:555) ~[spring-context-4.3.18.RELEASE.jar:4.3.18.RELEASE]
	at org.springframework.cache.interceptor.CacheAspectSupport.findCachedItem(CacheAspectSupport.java:499) ~[spring-context-4.3.18.RELEASE.jar:4.3.18.RELEASE]
	at org.springframework.cache.interceptor.CacheAspectSupport.execute(CacheAspectSupport.java:386) ~[spring-context-4.3.18.RELEASE.jar:4.3.18.RELEASE]
	at org.springframework.cache.interceptor.CacheAspectSupport.execute(CacheAspectSupport.java:324) ~[spring-context-4.3.18.RELEASE.jar:4.3.18.RELEASE]
	at org.springframework.cache.interceptor.CacheInterceptor.invoke(CacheInterceptor.java:61) ~[spring-context-4.3.18.RELEASE.jar:4.3.18.RELEASE]
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.3.18.RELEASE.jar:4.3.18.RELEASE]
	at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:671) ~[spring-aop-4.3.18.RELEASE.jar:4.3.18.RELEASE]
	at biz.deinum.cacheablespybeanissue.OrderService$$EnhancerBySpringCGLIB$$b501beda.find(<generated>) ~[classes/:na]
	at biz.deinum.cacheablespybeanissue.CacheableSpybeanIssueApplication.lambda$orders$0(CacheableSpybeanIssueApplication.java:26) ~[classes/:na]
	at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:723) ~[spring-boot-1.5.14.RELEASE.jar:1.5.14.RELEASE]
	... 31 common frames omitted

Using only the id argument as the cache yield a slightly different exception (but the underlying cause is the same).

java.lang.IllegalStateException: Failed to load ApplicationContext
	at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:124) ~[spring-test-4.3.18.RELEASE.jar:4.3.18.RELEASE]
	at org.springframework.test.context.support.DefaultTestContext.getApplicationContext(DefaultTestContext.java:83) ~[spring-test-4.3.18.RELEASE.jar:4.3.18.RELEASE]
	at org.springframework.boot.test.mock.mockito.MockitoTestExecutionListener.postProcessFields(MockitoTestExecutionListener.java:110) ~[spring-boot-test-1.5.14.RELEASE.jar:1.5.14.RELEASE]
	at org.springframework.boot.test.mock.mockito.MockitoTestExecutionListener.injectFields(MockitoTestExecutionListener.java:78) ~[spring-boot-test-1.5.14.RELEASE.jar:1.5.14.RELEASE]
	at org.springframework.boot.test.mock.mockito.MockitoTestExecutionListener.prepareTestInstance(MockitoTestExecutionListener.java:48) ~[spring-boot-test-1.5.14.RELEASE.jar:1.5.14.RELEASE]
	at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:230) ~[spring-test-4.3.18.RELEASE.jar:4.3.18.RELEASE]
	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:228) [spring-test-4.3.18.RELEASE.jar:4.3.18.RELEASE]
	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner$1.runReflectiveCall(SpringJUnit4ClassRunner.java:287) [spring-test-4.3.18.RELEASE.jar:4.3.18.RELEASE]
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) [junit-4.12.jar:4.12]
	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.methodBlock(SpringJUnit4ClassRunner.java:289) [spring-test-4.3.18.RELEASE.jar:4.3.18.RELEASE]
	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:247) [spring-test-4.3.18.RELEASE.jar:4.3.18.RELEASE]
	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:94) [spring-test-4.3.18.RELEASE.jar:4.3.18.RELEASE]
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) [junit-4.12.jar:4.12]
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) [junit-4.12.jar:4.12]
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) [junit-4.12.jar:4.12]
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) [junit-4.12.jar:4.12]
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) [junit-4.12.jar:4.12]
	at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61) [spring-test-4.3.18.RELEASE.jar:4.3.18.RELEASE]
	at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70) [spring-test-4.3.18.RELEASE.jar:4.3.18.RELEASE]
	at org.junit.runners.ParentRunner.run(ParentRunner.java:363) [junit-4.12.jar:4.12]
	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:191) [spring-test-4.3.18.RELEASE.jar:4.3.18.RELEASE]
	at org.junit.runner.JUnitCore.run(JUnitCore.java:137) [junit-4.12.jar:4.12]
	at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68) [junit-rt.jar:na]
	at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47) [junit-rt.jar:na]
	at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242) [junit-rt.jar:na]
	at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70) [junit-rt.jar:na]
Caused by: java.lang.IllegalStateException: Failed to execute ApplicationRunner
	at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:726) ~[spring-boot-1.5.14.RELEASE.jar:1.5.14.RELEASE]
	at org.springframework.boot.SpringApplication.callRunners(SpringApplication.java:713) ~[spring-boot-1.5.14.RELEASE.jar:1.5.14.RELEASE]
	at org.springframework.boot.SpringApplication.afterRefresh(SpringApplication.java:703) ~[spring-boot-1.5.14.RELEASE.jar:1.5.14.RELEASE]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:304) ~[spring-boot-1.5.14.RELEASE.jar:1.5.14.RELEASE]
	at org.springframework.boot.test.context.SpringBootContextLoader.loadContext(SpringBootContextLoader.java:121) ~[spring-boot-test-1.5.14.RELEASE.jar:1.5.14.RELEASE]
	at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContextInternal(DefaultCacheAwareContextLoaderDelegate.java:98) ~[spring-test-4.3.18.RELEASE.jar:4.3.18.RELEASE]
	at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:116) ~[spring-test-4.3.18.RELEASE.jar:4.3.18.RELEASE]
	... 25 common frames omitted
Caused by: java.lang.IllegalArgumentException: Null key returned for cache operation (maybe you are using named params on classes without debug info?) Builder[public biz.deinum.cacheablespybeanissue.Order biz.deinum.cacheablespybeanissue.OrderService.find(java.lang.String,biz.deinum.cacheablespybeanissue.PartialKey)] caches=[orders] | key='#id' | keyGenerator='' | cacheManager='' | cacheResolver='' | condition='' | unless='' | sync='false'
	at org.springframework.cache.interceptor.CacheAspectSupport.generateKey(CacheAspectSupport.java:558) ~[spring-context-4.3.18.RELEASE.jar:4.3.18.RELEASE]
	at org.springframework.cache.interceptor.CacheAspectSupport.findCachedItem(CacheAspectSupport.java:499) ~[spring-context-4.3.18.RELEASE.jar:4.3.18.RELEASE]
	at org.springframework.cache.interceptor.CacheAspectSupport.execute(CacheAspectSupport.java:386) ~[spring-context-4.3.18.RELEASE.jar:4.3.18.RELEASE]
	at org.springframework.cache.interceptor.CacheAspectSupport.execute(CacheAspectSupport.java:324) ~[spring-context-4.3.18.RELEASE.jar:4.3.18.RELEASE]
	at org.springframework.cache.interceptor.CacheInterceptor.invoke(CacheInterceptor.java:61) ~[spring-context-4.3.18.RELEASE.jar:4.3.18.RELEASE]
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.3.18.RELEASE.jar:4.3.18.RELEASE]
	at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:671) ~[spring-aop-4.3.18.RELEASE.jar:4.3.18.RELEASE]
	at biz.deinum.cacheablespybeanissue.OrderService$$EnhancerBySpringCGLIB$$292a87d8.find(<generated>) ~[classes/:na]
	at biz.deinum.cacheablespybeanissue.CacheableSpybeanIssueApplication.lambda$orders$0(CacheableSpybeanIssueApplication.java:26) ~[classes/:na]
	at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:723) ~[spring-boot-1.5.14.RELEASE.jar:1.5.14.RELEASE]
	... 31 common frames omitted

Reproduction project has been supplied to the Spring Boot Issues repositories. See spring-attic/spring-boot-issues#79

At some further inspection this looks like an ordering issue. The SpyPostProcessor is a PriorityOrdered and returns the HIGHEST_PRECEDENCE which makes it run very early in the proces. Leading to the CacheInterceptor seeing a OrderService#EnhanchedByMockitoCglib.

Shouldn't it be the last in line, wrapping the actual proxied instance (including the AOP) so that the spy can still record access but the regular behavior is still added (like @Cacheable, @Secured etc). It appears mainly to be an issue with interceptors that also read method arguments using SpEL. Apparently the creation of the Spy first makes the actual bean a proxy which doesn't contain the needed debug information anymore.
@spring-projects-issues spring-projects-issues added the status: waiting-for-triage An issue we've not yet triaged label Jul 30, 2018
@mdeinum
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mdeinum commented Aug 1, 2018

Doing some further digging it actually appears to be deliberately ordered like that. This was introduced in gh-5837. Which was/is supposed to be the fix to work with Spring AOP, however it doesn't fix the cases in which an interceptor reads information from the method signature (like method arguments).

@mdeinum mdeinum mentioned this issue Aug 1, 2018
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@wilkinsona wilkinsona self-assigned this Aug 1, 2018
mdeinum added a commit to mdeinum/spring-boot that referenced this issue Aug 1, 2018
@mdeinum
Failing test for spring-projectsgh-13945
2335669 
Failing testcase to show the issue. When Spring AOP need method
arguments to build a cache key (but probably also on other annotations
that require method arguments) the AOP part will fail.

Creating a Mockito mock results in the loss of the debug information
needed to read the correct method parameter.

issue: spring-projectsgh-13945
@mdeinum mdeinum mentioned this issue Aug 1, 2018
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@wilkinsona
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wilkinsona commented Aug 1, 2018 •
edited
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The debug information that's used by LocalVariableTableParameterNameDiscoverer is lost because the proxy class is generated at runtime so there's no class file available for it to introspect. This applies to both Boot 1.5 (Mockito 1.x which uses CGLib) and Boot 2.0 (Mockito 2.x which uses ByteBuddy).

The debug information that's used by StandardReflectionParameterNameDiscoverer is lost when using Boot 1.5 as CGLib doesn't provide it. It is not lost when using Boot 2.0 as ByteBuddy does provide it as long as the original code is compiled with -parameters. In other words, the problem does not occur with Spring Boot 2.0 as long as the code is compiled with -parameters.

The problem could be avoided altogether if we could get the expression evaluation to use the method on the original object rather than from the spy's proxy but I'm not sure that's possible and it certainly wouldn't be easy to do. As things stand, I'm leaning towards a documentation change that notes that -parameters should be used when combining @SpyBean with @Cacheable and a key expression that uses parameter names.

@wilkinsona wilkinsona added type: documentation A documentation update for: team-attention An issue we'd like other members of the team to review and removed status: waiting-for-triage An issue we've not yet triaged labels Aug 1, 2018
@wilkinsona wilkinsona added this to the 2.0.x milestone Aug 1, 2018
@mdeinum
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mdeinum commented Aug 1, 2018

Is there anything in Spring Boot 1.5 preventing us from using Mockito 2? As I'm not really keen on doing a full upgrade to Spring Boot 2 just yet.

@wilkinsona
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No. As noted in the documentation you should be able to use 2.x if you wish. You'll need to override the mockito.version property in order to do so.

@wilkinsona wilkinsona removed the for: team-attention An issue we'd like other members of the team to review label Aug 1, 2018
@snicoll snicoll changed the title @SpyBean for @Cacheable doesn't work. @SpyBean for @Cacheable doesn't work Aug 24, 2018
@wilkinsona wilkinsona changed the title @SpyBean for @Cacheable doesn't work Document the need for compilation with -parameters when using @SpyBean and @Cacheable with a key expression that uses a parameter name Oct 8, 2018
@wilkinsona wilkinsona modified the milestones: 2.0.x, 2.0.6 Oct 8, 2018
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