Make java.sql classes available to the agent and extensions
Resolves
@@ -116,7 +116,7 @@ public class AgentClassLoader extends URLClassLoader {
private static ClassLoader getParentClassLoader() {
if (JAVA_VERSION > 8) {
- return new JdkHttpServerClassLoader();
+ return new PlatformDelegatingClassLoader();
}
return null;
}
@@ -441,7 +441,10 @@ public class AgentClassLoader extends URLClassLoader {
}
}
- private static class JdkHttpServerClassLoader extends ClassLoader {
+ // We don't always delegate to platform loader because platform class loader also contains user
+ // classes when running a modular application. We don't want these classes interfering with the
+ // agent.
+ private static class PlatformDelegatingClassLoader extends ClassLoader {
static {
// this class loader doesn't load any classes, so this is technically unnecessary,
@@ -452,14 +455,16 @@ public class AgentClassLoader extends URLClassLoader {
private final ClassLoader platformClassLoader = getPlatformLoader();
- public JdkHttpServerClassLoader() {
+ public PlatformDelegatingClassLoader() {
super(null);
}
@Override
protected Class<?> loadClass(String name, boolean resolve) throws ClassNotFoundException {
// prometheus exporter uses jdk http server, load it from the platform class loader
- if (name != null && name.startsWith("com.sun.net.httpserver.")) {
+ // some custom extensions use java.sql classes, make these available to agent and extensions
+ if (name != null
+ && (name.startsWith("com.sun.net.httpserver.") || name.startsWith("java.sql."))) {
return platformClassLoader.loadClass(name);
}
return Class.forName(name, false, null);
