Allow to understand MappingInstantiationException [DATAMONGO-2511]

[spring-projects-issues]

Piotr Kubowicz opened DATAMONGO-2511 and commented

When you call findAll() on a Mongo-based repository and one of the documents is outdated, you receive a MappingInstantiationException that shows details of contructor call that failed.

This is not enough information to diagnose the problem. You are not able to find out which particular document is malformed.

org.springframework.data.mapping.model.MappingInstantiationException: Failed to instantiate Foo using constructor fun <init>(kotlin.String, kotlin.Boolean, kotlin.collections.List<kotlin.String>, kotlin.Int, java.time.Instant): Foo with arguments 5e9047feb66b876dd06a518b,null,null,null,null
	at org.springframework.data.convert.ClassGeneratingEntityInstantiator$EntityInstantiatorAdapter.createInstance(ClassGeneratingEntityInstantiator.java:228)
	at org.springframework.data.convert.ClassGeneratingEntityInstantiator.createInstance(ClassGeneratingEntityInstantiator.java:84)
	at org.springframework.data.mongodb.core.convert.MappingMongoConverter.read(MappingMongoConverter.java:322)
	at org.springframework.data.mongodb.core.convert.MappingMongoConverter.read(MappingMongoConverter.java:295)
	at org.springframework.data.mongodb.core.convert.MappingMongoConverter.read(MappingMongoConverter.java:226)
	at org.springframework.data.mongodb.core.convert.MappingMongoConverter.read(MappingMongoConverter.java:222)
	at org.springframework.data.mongodb.core.convert.MappingMongoConverter.read(MappingMongoConverter.java:95)
	at org.springframework.data.mongodb.core.MongoTemplate$ReadDocumentCallback.doWith(MongoTemplate.java:3162)
	at org.springframework.data.mongodb.core.MongoTemplate.executeFindMultiInternal(MongoTemplate.java:2799)
	at org.springframework.data.mongodb.core.MongoTemplate.doFind(MongoTemplate.java:2532)
	at org.springframework.data.mongodb.core.MongoTemplate.doFind(MongoTemplate.java:2515)
	at org.springframework.data.mongodb.core.MongoTemplate.find(MongoTemplate.java:876)
	at org.springframework.data.mongodb.repository.support.SimpleMongoRepository.findAll(SimpleMongoRepository.java:380)
	at org.springframework.data.mongodb.repository.support.SimpleMongoRepository.findAll(SimpleMongoRepository.java:204)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
	at org.springframework.data.repository.core.support.RepositoryComposition$RepositoryFragments.invoke(RepositoryComposition.java:371)
	at org.springframework.data.repository.core.support.RepositoryComposition.invoke(RepositoryComposition.java:204)
	at org.springframework.data.repository.core.support.RepositoryFactorySupport$ImplementationMethodExecutionInterceptor.invoke(RepositoryFactorySupport.java:657)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
	at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.doInvoke(RepositoryFactorySupport.java:621)
	at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.invoke(RepositoryFactorySupport.java:605)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
	at org.springframework.data.projection.DefaultMethodInvokingMethodInterceptor.invoke(DefaultMethodInvokingMethodInterceptor.java:80)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
	at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:95)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
	at org.springframework.data.repository.core.support.MethodInvocationValidator.invoke(MethodInvocationValidator.java:99)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:212)
	at com.sun.proxy.$Proxy140.findAll(Unknown Source)

I was able to work around this by creating a wrapper class around MappingMongoConverter and making Spring Boot use it:

@Bean
fun reactiveMongoTemplate(reactiveMongoDatabaseFactory: ReactiveMongoDatabaseFactory, converter: MongoConverter) =
    ReactiveMongoTemplate(reactiveMongoDatabaseFactory, DiagnosingMongoConverter(converter))

@Bean
fun mongoTemplate(mongoDbFactory: MongoDbFactory, converter: MongoConverter) =
    MongoTemplate(mongoDbFactory, DiagnosingMongoConverter(converter))

but I think this should be a core functionality. The idea is to modify MappingMongoConverter.read() and try to retrieve ObjectId from _id field of the Document and report it in the exception.

I can provide a pull request

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Affects: 2.2.6 (Moore SR6)

Referenced from: pull request #860