ExecutorBeanPostProcessor tries to create cglib proxy for class without visible constructor

[kohegen]

Problem: The issue is when io.opentracing.contrib.spring.cloud.async.ExecutorBeanPostProcessor tries to create CGlib proxy on FinalizableDelegatedExecutorService and DelegatedScheduledExecutorService which don't have visible constructor. it fails with exception below:

java.lang.IllegalArgumentException: No visible constructors in class java.util.concurrent.Executors$DelegatedScheduledExecutorService

Reproduction - just try to do instrumentation for Executors below:

Executors.newSingleThreadExecutor()

or

Executors.newSingleThreadScheduledExecutor()

Tested on version:

0.5.3       

Module:

opentracing-spring-cloud-core

This is the exact same problem as here: https://github.com/spring-cloud/spring-cloud-sleuth/issues/684

[pschichtel]

I'm hitting this too, has there been any investigation on how to fix this?

[kohegen]

This is how it has been fixed in spring-cloud-sleuth: https://github.com/spring-cloud/spring-cloud-sleuth/commit/58f3d0fce000cf849f4d9674820b4da7c75d59b1