load class from parent classloader

Author: kananindzya

apm-agent-core/src/test/java/co/elastic/apm/agent/TestClassWithDependencyRunner.java

@@ -11,9 +11,9 @@
  * the Apache License, Version 2.0 (the "License"); you may
  * not use this file except in compliance with the License.
  * You may obtain a copy of the License at
- * 
+ *
  * http://www.apache.org/licenses/LICENSE-2.0
- * 
+ *
  * Unless required by applicable law or agreed to in writing,
  * software distributed under the License is distributed on an
  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
@@ -197,10 +197,19 @@ protected Class<?> loadClass(String name, boolean resolve) throws ClassNotFoundE
  try {
  // First, check if the class has already been loaded
  Class<?> c = findLoadedClass(name);
+ ClassLoader parent = getParent();
  if (c == null) {
- c = findClass(name);
- if (resolve) {
- resolveClass(c);
+ try {
+ if (parent != null) {
+ c = parent.loadClass(name);
+ }
+ } catch (ClassNotFoundException e) {
+ }
+ if (c == null) {
+ c = findClass(name);
+ if (resolve) {
+ resolveClass(c);
+ }
  }
  }
  return c;

apm-agent-plugins/apm-mongoclient-plugin/src/test/java/co/elastic/apm/agent/mongoclient/MongoClientSyncVersionIT.java

@@ -11,9 +11,9 @@
  * the Apache License, Version 2.0 (the "License"); you may
  * not use this file except in compliance with the License.
  * You may obtain a copy of the License at
- * 
+ *
  * http://www.apache.org/licenses/LICENSE-2.0
- * 
+ *
  * Unless required by applicable law or agreed to in writing,
  * software distributed under the License is distributed on an
  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY