reactor.tools.agent.ReactorDebugByteBuddyPlugin Maven / Gradle / Ivy
/*
* Copyright (c) 2020-2021 VMware Inc. or its affiliates, All Rights Reserved.
*
* Licensed under 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
*
* https://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 KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package reactor.tools.agent;
import java.util.concurrent.atomic.AtomicBoolean;
import net.bytebuddy.asm.AsmVisitorWrapper;
import net.bytebuddy.build.Plugin;
import net.bytebuddy.description.field.FieldDescription;
import net.bytebuddy.description.field.FieldList;
import net.bytebuddy.description.method.MethodList;
import net.bytebuddy.description.type.TypeDescription;
import net.bytebuddy.dynamic.ClassFileLocator;
import net.bytebuddy.dynamic.DynamicType;
import net.bytebuddy.implementation.Implementation;
import net.bytebuddy.jar.asm.ClassVisitor;
import net.bytebuddy.pool.TypePool;
import net.bytebuddy.jar.asm.ClassWriter;
public class ReactorDebugByteBuddyPlugin implements Plugin {
@Override
public boolean matches(TypeDescription target) {
return true;
}
@Override
public DynamicType.Builder apply(
DynamicType.Builder builder,
TypeDescription typeDescription,
ClassFileLocator classFileLocator
) {
return builder.visit(new AsmVisitorWrapper() {
@Override
public int mergeWriter(int flags) {
return flags | ClassWriter.COMPUTE_MAXS;
}
@Override
public int mergeReader(int flags) {
return flags;
}
@Override
public ClassVisitor wrap(
TypeDescription instrumentedType,
ClassVisitor classVisitor,
Implementation.Context implementationContext,
TypePool typePool,
FieldList fields,
MethodList methods,
int writerFlags,
int readerFlags
) {
return new ReactorDebugClassVisitor(classVisitor, new AtomicBoolean());
}
});
}
@Override
public void close() {
}
}