/*
* Copyright 2016 NAVER Corp.
*
* 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
*
* 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 KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.navercorp.pinpoint.profiler.instrument;
import com.google.inject.Provider;
import com.navercorp.pinpoint.bootstrap.instrument.InstrumentClass;
import com.navercorp.pinpoint.bootstrap.instrument.InstrumentContext;
import com.navercorp.pinpoint.bootstrap.instrument.NotFoundInstrumentException;
import com.navercorp.pinpoint.profiler.interceptor.registry.InterceptorRegistryBinder;
import com.navercorp.pinpoint.profiler.metadata.ApiMetaDataService;
import com.navercorp.pinpoint.profiler.objectfactory.ObjectBinderFactory;
import com.navercorp.pinpoint.profiler.util.JavaAssistUtils;
import org.objectweb.asm.ClassReader;
import org.objectweb.asm.tree.ClassNode;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.lang.instrument.Instrumentation;
import java.util.List;
import java.util.jar.JarFile;
/**
* @author jaehong.kim
*/
public class ASMEngine implements InstrumentEngine {
private final Logger logger = LoggerFactory.getLogger(this.getClass());
private final boolean isInfo = logger.isInfoEnabled();
private final Instrumentation instrumentation;
private final ObjectBinderFactory objectBinderFactory;
private final InterceptorRegistryBinder interceptorRegistryBinder;
private final Provider<ApiMetaDataService> apiMetaDataService;
public ASMEngine(Instrumentation instrumentation, ObjectBinderFactory objectBinderFactory, final InterceptorRegistryBinder interceptorRegistryBinder, Provider<ApiMetaDataService> apiMetaDataService, final List<String> bootStrapJars) {
if (instrumentation == null) {
throw new NullPointerException("instrumentation must not be null");
}
if (objectBinderFactory == null) {
throw new NullPointerException("objectBinderFactory must not be null");
}
if (interceptorRegistryBinder == null) {
throw new NullPointerException("interceptorRegistryBinder must not be null");
}
if (apiMetaDataService == null) {
throw new NullPointerException("apiMetaDataService must not be null");
}
this.instrumentation = instrumentation;
this.objectBinderFactory = objectBinderFactory;
this.interceptorRegistryBinder = interceptorRegistryBinder;
this.apiMetaDataService = apiMetaDataService;
}
@Override
public InstrumentClass getClass(InstrumentContext instrumentContext, ClassLoader classLoader, String className, byte[] classFileBuffer) throws NotFoundInstrumentException {
if (className == null) {
throw new NullPointerException("class name must not be null.");
}
try {
if (classFileBuffer == null) {
ASMClassNodeAdapter classNode = ASMClassNodeAdapter.get(instrumentContext, classLoader, JavaAssistUtils.javaNameToJvmName(className));
if (classNode == null) {
return null;
}
ApiMetaDataService apiMetaDataService = this.apiMetaDataService.get();
return new ASMClass(objectBinderFactory, instrumentContext, interceptorRegistryBinder, apiMetaDataService, classLoader, classNode);
}
// Use ASM tree api.
final ClassReader classReader = new ClassReader(classFileBuffer);
final ClassNode classNode = new ClassNode();
classReader.accept(classNode, 0);
ApiMetaDataService apiMetaDataService = this.apiMetaDataService.get();
return new ASMClass(objectBinderFactory, instrumentContext, interceptorRegistryBinder, apiMetaDataService, classLoader, classNode);
} catch (Exception e) {
throw new NotFoundInstrumentException(e);
}
}
@Override
public boolean hasClass(ClassLoader classLoader, String className) {
// TODO deprecated
return classLoader.getResource(JavaAssistUtils.javaNameToJvmName(className) + ".class") != null;
}
@Override
public void appendToBootstrapClassPath(JarFile jarFile) {
if (jarFile == null) {
throw new NullPointerException("jarFile must not be null");
}
if (isInfo) {
logger.info("appendToBootstrapClassPath:{}", jarFile);
}
instrumentation.appendToBootstrapClassLoaderSearch(jarFile);
}
}