Build micronaut native image with hikari datasource - hikaricp

Question

Faced with a problem running micronaut application that was packed in native-image.
I created simple demo application with micronaut-data-hibernate-jpa and based on documentation I need to add some db connection pool. I chose hikari and added such dependency micronaut-jdbc-hikari.
I use maven as build tool and add plugin to build native-image native-image-maven-plugin
native-image.properties
Args = -H:IncludeResources=logback.xml|application.yml|bootstrap.yml \
-H:Name=demo \
-H:Class=com.example.Application \
-H:+TraceClassInitialization \
--initialize-at-run-time=org.apache.commons.logging.LogAdapter$Log4jLog,org.hibernate.secure.internal.StandardJaccServiceImpl,org.postgresql.sspi.SSPIClient,org.hibernate.dialect.OracleTypesHelper \
--initialize-at-build-time=org.postgresql.Driver,org.postgresql.util.SharedTimer,org.hibernate.engine.spi.EffectiveEntityGraph,org.hibernate.engine.spi.LoadQueryInfluencers
When I run application with the jvm then everything works. But when I try to run same application that was packed as native-image then I get such error
Caused by: java.lang.IllegalArgumentException: Class com.zaxxer.hikari.util.ConcurrentBag$IConcurrentBagEntry[] is instantiated reflectively but was never registered. Register the class by using org.graalvm.nativeimage.hosted.RuntimeReflection
at com.oracle.svm.core.graal.snippets.SubstrateAllocationSnippets.arrayHubErrorStub(SubstrateAllocationSnippets.java:280)
at java.lang.ThreadLocal$SuppliedThreadLocal.initialValue(ThreadLocal.java:305)
at java.lang.ThreadLocal.setInitialValue(ThreadLocal.java:195)
at java.lang.ThreadLocal.get(ThreadLocal.java:172)
at com.zaxxer.hikari.util.ConcurrentBag.borrow(ConcurrentBag.java:129)
at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:179)
at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161)
at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:100)
at org.hibernate.engine.jdbc.connections.internal.DatasourceConnectionProviderImpl.getConnection(DatasourceConnectionProviderImpl.java:122)
at org.hibernate.internal.NonContextualJdbcConnectionAccess.obtainConnection(NonContextualJdbcConnectionAccess.java:38)
at org.hibernate.resource.jdbc.internal.LogicalConnectionManagedImpl.acquireConnectionIfNeeded(LogicalConnectionManagedImpl.java:104)
at org.hibernate.resource.jdbc.internal.LogicalConnectionManagedImpl.getPhysicalConnection(LogicalConnectionManagedImpl.java:134)
at org.hibernate.resource.jdbc.internal.LogicalConnectionManagedImpl.getConnectionForTransactionManagement(LogicalConnectionManagedImpl.java:250)
at org.hibernate.resource.jdbc.internal.LogicalConnectionManagedImpl.begin(LogicalConnectionManagedImpl.java:258)
at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl$TransactionDriverControlImpl.begin(JdbcResourceLocalTransactionCoordinatorImpl.java:246)
at org.hibernate.engine.transaction.internal.TransactionImpl.begin(TransactionImpl.java:83)
at org.hibernate.internal.AbstractSharedSessionContract.beginTransaction(AbstractSharedSessionContract.java:471)
at io.micronaut.transaction.hibernate5.HibernateTransactionManager.doBegin(HibernateTransactionManager.java:352)
... 99 common frames omitted
UPDATE/SOLUTION
Based on #Airy answer I have added reflection config in native-image.properties. In my case it is looks like so
[
{
"name" : "com.zaxxer.hikari.util.ConcurrentBag",
"allDeclaredConstructors" : true,
"allPublicConstructors" : true,
"allDeclaredMethods" : true,
"allPublicMethods" : true,
"allDeclaredClasses" : true,
"allPublicClasses" : true
},
{
"name" : "com.zaxxer.hikari.pool.PoolEntry",
"allDeclaredConstructors" : true,
"allPublicConstructors" : true,
"allDeclaredMethods" : true,
"allPublicMethods" : true,
"allDeclaredClasses" : true,
"allPublicClasses" : true
}
]
And another solution is to change scope of hikari dependency to compile and add missed fields/classes into hints annotation like so
#TypeHint(value = {
PostgreSQL95Dialect.class,
SessionFactoryImpl.class,
org.postgresql.PGProperty.class,
UUIDGenerator.class,
com.zaxxer.hikari.util.ConcurrentBag.class, // In my case I have just added this line
}, accessType = {TypeHint.AccessType.ALL_PUBLIC})
whole example you can find here

Answer 1

You should declare reflection configuration in your native-image.properties with -H:ReflectionConfigurationFiles=/path/to/reflectconfig
Here is the documentation for doing so