Using Jedis pool in JAX-RS app running in Quarkus native results in ClassNotFoundException: org.apache.commons.pool2.impl.DefaultEvictionPolicy

问题

I'm trying to use JedisPool in application run in Quarkus native mode (works fine in JVM mode).
I've already disabled JMX feature of the pool, which is not avaliable in native mode, like this:

  JedisPoolConfig jedisConfiguration = new JedisPoolConfig();
  jedisConfiguration.setJmxEnabled(false);
  jedisPool = new JedisPool(jedisConfiguration, jedisURI);

However I'm hitting following error:

2020-04-29 17:35:37,724 INFO  [test.StockQuote] (main) java.lang.IllegalArgumentException: Unable to create org.apache.commons.pool2.impl.EvictionPolicy instance of type org.apache.commons.pool2.impl.DefaultEvictionPolicy
    at org.apache.commons.pool2.impl.BaseGenericObjectPool.setEvictionPolicyClassName(BaseGenericObjectPool.java:662)
    at org.apache.commons.pool2.impl.BaseGenericObjectPool.setEvictionPolicyClassName(BaseGenericObjectPool.java:687)
    at org.apache.commons.pool2.impl.BaseGenericObjectPool.setConfig(BaseGenericObjectPool.java:235)
    at org.apache.commons.pool2.impl.GenericObjectPool.setConfig(GenericObjectPool.java:302)
    at org.apache.commons.pool2.impl.GenericObjectPool.<init>(GenericObjectPool.java:115)
    at redis.clients.jedis.util.Pool.initPool(Pool.java:45)
    ...
 Caused by: java.lang.ClassNotFoundException: org.apache.commons.pool2.impl.DefaultEvictionPolicy
    at com.oracle.svm.core.hub.ClassForNameSupport.forName(ClassForNameSupport.java:60)
    at java.lang.Class.forName(DynamicHub.java:1197)

as a temporary solution, I switched to create direct connection instead of using pool, but still looking for possibility of using pool.

Any suggestions or workarounds?

回答1:

Ok, I dug a little more and found this more info about Class.forName on these pages: Reflection on Substrate VM and Quarkus - Tips for writing native applications and found a solution via reflection-config.json file which contains:

[
  {
    "name" : "org.apache.commons.pool2.impl.DefaultEvictionPolicy",
    "allDeclaredConstructors" : true,
    "allPublicConstructors" : true,
    "allDeclaredMethods" : true,
    "allPublicMethods" : true,
    "allDeclaredFields" : true,
    "allPublicFields" : true
  }
]

You need also add following line to your application.properties file:

quarkus.native.additional-build-args =-H:ReflectionConfigurationFiles=reflection-config.json

Then my application runs successfully.

来源：https://stackoverflow.com/questions/61797951/using-jedis-pool-in-jax-rs-app-running-in-quarkus-native-results-in-classnotfoun

标签

jax-rs

jedis

quarkus