This is an automated email from the ASF dual-hosted git repository.
remm pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/tomcat-jakartaee-migration.git
The following commit(s) were added to refs/heads/master by this push:
new a6b2607 Add ClassFileTransformer hook
a6b2607 is described below
commit a6b260792435f458b1b90d1bc70bb5c0ac266e0f
Author: remm <[email protected]>
AuthorDate: Thu Feb 11 17:00:48 2021 +0100
Add ClassFileTransformer hook
For possible experimentations inside the WebappClassLoader.
---
.../apache/tomcat/jakartaee/ClassConverter.java | 23 +++++++++++++++++++++-
1 file changed, 22 insertions(+), 1 deletion(-)
diff --git a/src/main/java/org/apache/tomcat/jakartaee/ClassConverter.java
b/src/main/java/org/apache/tomcat/jakartaee/ClassConverter.java
index 1b15652..0173f71 100644
--- a/src/main/java/org/apache/tomcat/jakartaee/ClassConverter.java
+++ b/src/main/java/org/apache/tomcat/jakartaee/ClassConverter.java
@@ -16,9 +16,14 @@
*/
package org.apache.tomcat.jakartaee;
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
+import java.lang.instrument.ClassFileTransformer;
+import java.lang.instrument.IllegalClassFormatException;
+import java.security.ProtectionDomain;
import java.util.logging.Level;
import java.util.logging.Logger;
@@ -27,7 +32,7 @@ import org.apache.bcel.classfile.Constant;
import org.apache.bcel.classfile.ConstantUtf8;
import org.apache.bcel.classfile.JavaClass;
-public class ClassConverter implements Converter {
+public class ClassConverter implements Converter, ClassFileTransformer {
private static final Logger logger =
Logger.getLogger(ClassConverter.class.getCanonicalName());
private static final StringManager sm =
StringManager.getManager(ClassConverter.class);
@@ -74,4 +79,20 @@ public class ClassConverter implements Converter {
javaClass.dump(dest);
}
+
+
+ @Override
+ public byte[] transform(ClassLoader loader, String className,
+ Class<?> classBeingRedefined, ProtectionDomain protectionDomain,
+ byte[] classfileBuffer) throws IllegalClassFormatException {
+ ByteArrayInputStream inputStream = new
ByteArrayInputStream(classfileBuffer);
+ ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
+ try {
+ convert(className, inputStream, outputStream,
EESpecProfile.TOMCAT);
+ } catch (IOException e) {
+ throw new IllegalClassFormatException(e.getLocalizedMessage());
+ }
+ return outputStream.toByteArray();
+ }
+
}
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