Closed
Description
I spent some time trying to get a sample application that uses remote chunking to work in an AOT/GraalVM native image.
I registered a handful of hints related to my own business domain types in each of the leader and worker nodes, but the following RuntimeHintsRegistrar configuration is generalized, and was needed both leader and worker.
static class Hints implements RuntimeHintsRegistrar {
@Override
public void registerHints(RuntimeHints hints, ClassLoader classLoader) {
var classLiterals = Set.of(
// batch
org.springframework.batch.core.JobParameters.class,
org.springframework.batch.core.JobParameter.class, ChunkRequest.class, ExitStatus.class,
StepContribution.class, JobExecution.class, Entity.class, ExecutionContext.class,
StepExecution.class, ChunkResponse.class, Chunk.class, JobInstance.class,
// jdk
java.util.LinkedHashSet.class, java.util.LinkedHashMap.class, java.util.HashSet.class,
ReentrantLock.class, ConcurrentHashMap.class, AbstractOwnableSynchronizer.class,
AbstractQueuedSynchronizer.class);
var classStrings = Set.of(
// jdk
"java.time.Ser", "java.util.Collections$SynchronizedSet",
"java.util.Collections$SynchronizedCollection", "java.util.concurrent.locks.ReentrantLock$Sync",
"java.util.concurrent.locks.ReentrantLock$FairSync",
"java.util.concurrent.locks.ReentrantLock$NonfairSync",
"java.util.concurrent.ConcurrentHashMap$Segment");
var all = new HashSet<String>();
all.addAll(classLiterals.stream().map(Class::getName).collect(Collectors.toSet()));
all.addAll(classStrings);
var typeReferences = all.stream().map(TypeReference::of).collect(Collectors.toSet());
typeReferences.forEach(c -> hints.serialization().registerType(c));
typeReferences.forEach(c -> hints.reflection().registerType(c, MemberCategory.values()));
}
}