/*
* Copyright 2014 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.plugin;
import com.navercorp.pinpoint.bootstrap.config.ProfilerConfig;
import com.navercorp.pinpoint.profiler.instrument.GuardInstrumentor;
import com.navercorp.pinpoint.bootstrap.instrument.InstrumentContext;
import com.navercorp.pinpoint.bootstrap.instrument.InstrumentException;
import com.navercorp.pinpoint.bootstrap.instrument.matcher.Matcher;
import com.navercorp.pinpoint.bootstrap.instrument.transformer.TransformCallback;
import com.navercorp.pinpoint.exception.PinpointException;
import java.lang.instrument.IllegalClassFormatException;
import java.security.ProtectionDomain;
/**
* @author emeroad
*/
public class MatchableClassFileTransformerGuardDelegate implements MatchableClassFileTransformer {
private final ProfilerConfig profilerConfig;
private final InstrumentContext instrumentContext;
private final Matcher matcher;
private final TransformCallback transformCallback;
public MatchableClassFileTransformerGuardDelegate(ProfilerConfig profilerConfig, InstrumentContext instrumentContext, Matcher matcher, TransformCallback transformCallback) {
if (profilerConfig == null) {
throw new NullPointerException("profilerConfig must not be null");
}
if (instrumentContext == null) {
throw new NullPointerException("instrumentContext must not be null");
}
if (matcher == null) {
throw new NullPointerException("matcher must not be null");
}
if (transformCallback == null) {
throw new NullPointerException("transformCallback must not be null");
}
this.profilerConfig = profilerConfig;
this.instrumentContext = instrumentContext;
this.matcher = matcher;
this.transformCallback = transformCallback;
}
@Override
public Matcher getMatcher() {
return matcher;
}
@Override
public byte[] transform(ClassLoader loader, String className, Class<?> classBeingRedefined, ProtectionDomain protectionDomain, byte[] classfileBuffer) throws IllegalClassFormatException {
if (className == null) {
throw new NullPointerException("className must not be null");
}
final GuardInstrumentor guard = new GuardInstrumentor(this.profilerConfig, this.instrumentContext);
try {
// WARN external plugin api
return transformCallback.doInTransform(guard, loader, className, classBeingRedefined, protectionDomain, classfileBuffer);
} catch (InstrumentException e) {
throw new PinpointException(e);
} finally {
guard.close();
}
}
@Override
public String toString() {
final StringBuilder sb = new StringBuilder("MatchableClassFileTransformerGuardDelegate{");
sb.append("matcher=").append(matcher);
sb.append(", transformCallback=").append(transformCallback);
sb.append('}');
return sb.toString();
}
}