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The following commit(s) were added to refs/heads/master by this push:
new 787639a01 RANGER-3636: updated plugin classloader to use classloader
of shim class as parent (#548)
787639a01 is described below
commit 787639a0183f7ddaacf1fbaa91d711584615cc2d
Author: Madhan Neethiraj <[email protected]>
AuthorDate: Thu Jun 26 20:22:10 2025 +0530
RANGER-3636: updated plugin classloader to use classloader of shim class as
parent (#548)
---
.../classloader/RangerPluginClassLoader.java | 28 ++++++++++++----------
1 file changed, 16 insertions(+), 12 deletions(-)
diff --git
a/ranger-plugin-classloader/src/main/java/org/apache/ranger/plugin/classloader/RangerPluginClassLoader.java
b/ranger-plugin-classloader/src/main/java/org/apache/ranger/plugin/classloader/RangerPluginClassLoader.java
index 18bf15f85..befd591d3 100644
---
a/ranger-plugin-classloader/src/main/java/org/apache/ranger/plugin/classloader/RangerPluginClassLoader.java
+++
b/ranger-plugin-classloader/src/main/java/org/apache/ranger/plugin/classloader/RangerPluginClassLoader.java
@@ -41,13 +41,13 @@ public class RangerPluginClassLoader extends URLClassLoader
{
private static final Map<String, RangerPluginClassLoader>
PLUGIN_CLASS_LOADERS = new HashMap<>();
- private final MyClassLoader componentClassLoader;
+ private final ComponentClassLoader componentClassLoader;
private final ThreadLocal<ClassLoader> preActivateClassLoader = new
ThreadLocal<>();
public RangerPluginClassLoader(String pluginType, Class<?> pluginClass)
throws Exception {
super(RangerPluginClassLoaderUtil.getInstance().getPluginFilesForServiceTypeAndPluginclass(pluginType,
pluginClass), null);
- componentClassLoader =
AccessController.doPrivileged((PrivilegedAction<MyClassLoader>) () -> new
MyClassLoader(Thread.currentThread().getContextClassLoader()));
+ componentClassLoader =
AccessController.doPrivileged((PrivilegedAction<ComponentClassLoader>) () ->
new ComponentClassLoader(pluginClass));
}
public static RangerPluginClassLoader getInstance(final String pluginType,
final Class<?> pluginClass) throws Exception {
@@ -104,7 +104,7 @@ public Class<?> findClass(String name) throws
ClassNotFoundException {
// Use the Component ClassLoader findClass to load when
childClassLoader fails to find
LOG.debug("RangerPluginClassLoader.findClass({}): calling
componentClassLoader.findClass()", name);
- MyClassLoader savedClassLoader = getComponentClassLoader();
+ ComponentClassLoader savedClassLoader = getComponentClassLoader();
if (savedClassLoader != null) {
ret = savedClassLoader.findClass(name);
@@ -125,7 +125,7 @@ public URL findResource(String name) {
if (ret == null) {
LOG.debug("RangerPluginClassLoader.findResource({}): calling
componentClassLoader.getResources()", name);
- MyClassLoader savedClassLoader = getComponentClassLoader();
+ ComponentClassLoader savedClassLoader = getComponentClassLoader();
if (savedClassLoader != null) {
ret = savedClassLoader.getResource(name);
@@ -165,7 +165,7 @@ public synchronized Class<?> loadClass(String name) throws
ClassNotFoundExceptio
// Use the Component ClassLoader loadClass to load when
childClassLoader fails to find
LOG.debug("RangerPluginClassLoader.loadClass({}): calling
componentClassLoader.loadClass()", name);
- MyClassLoader savedClassLoader = getComponentClassLoader();
+ ComponentClassLoader savedClassLoader = getComponentClassLoader();
if (savedClassLoader != null) {
ret = savedClassLoader.loadClass(name);
@@ -198,7 +198,7 @@ public Enumeration<URL>
findResourcesUsingComponentClassLoader(String name) {
try {
LOG.debug("RangerPluginClassLoader.findResourcesUsingComponentClassLoader({}):
calling componentClassLoader.getResources()", name);
- MyClassLoader savedClassLoader = getComponentClassLoader();
+ ComponentClassLoader savedClassLoader = getComponentClassLoader();
if (savedClassLoader != null) {
ret = savedClassLoader.getResources(name);
@@ -232,7 +232,7 @@ public void deactivate() {
if (classLoader != null) {
preActivateClassLoader.remove();
} else {
- MyClassLoader savedClassLoader = getComponentClassLoader();
+ ComponentClassLoader savedClassLoader = getComponentClassLoader();
if (savedClassLoader != null && savedClassLoader.getParent() !=
null) {
classLoader = savedClassLoader.getParent();
@@ -252,7 +252,7 @@ public ClassLoader getPrevActiveClassLoader() {
ClassLoader ret = preActivateClassLoader.get();
if (ret == null) {
- MyClassLoader savedClassLoader = getComponentClassLoader();
+ ComponentClassLoader savedClassLoader = getComponentClassLoader();
if (savedClassLoader != null && savedClassLoader.getParent() !=
null) {
ret = savedClassLoader.getParent();
@@ -262,20 +262,24 @@ public ClassLoader getPrevActiveClassLoader() {
return ret;
}
- private MyClassLoader getComponentClassLoader() {
+ private ComponentClassLoader getComponentClassLoader() {
return componentClassLoader;
//return componentClassLoader.get();
}
- static class MyClassLoader extends ClassLoader {
- public MyClassLoader(ClassLoader realClassLoader) {
- super(realClassLoader);
+ static class ComponentClassLoader extends ClassLoader {
+ public ComponentClassLoader(Class<?> pluginShimClass) {
+ super(getClassLoaderOfShimClassOrCurrentThread(pluginShimClass));
}
@Override
public Class<?> findClass(String name) throws ClassNotFoundException {
//NO PMD
return super.findClass(name);
}
+
+ private static ClassLoader
getClassLoaderOfShimClassOrCurrentThread(Class<?> pluginShimClass) {
+ return pluginShimClass != null ? pluginShimClass.getClassLoader()
: Thread.currentThread().getContextClassLoader();
+ }
}
static class MergeEnumeration implements Enumeration<URL> { //NO PMD
