/*
 * Copyright 2018 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.lambda;

import com.navercorp.pinpoint.bootstrap.instrument.lambda.LambdaBytecodeHandler;
import com.navercorp.pinpoint.bootstrap.module.ClassFileTransformModuleAdaptor;
import com.navercorp.pinpoint.bootstrap.module.JavaModuleFactory;
import com.navercorp.pinpoint.common.util.Assert;
import org.slf4j.LoggerFactory;

import java.security.ProtectionDomain;

/**
 * @author Woonduk Kang(emeroad)
 */
public class DefaultLambdaBytecodeHandler implements LambdaBytecodeHandler {

    private final JavaModuleFactory javaModuleFactory;
    private final ClassFileTransformModuleAdaptor classFileTransformer;

    public DefaultLambdaBytecodeHandler(ClassFileTransformModuleAdaptor classFileTransformer, JavaModuleFactory javaModuleFactory) {
        this.classFileTransformer = Assert.requireNonNull(classFileTransformer, "classFileTransformer");
        this.javaModuleFactory = Assert.requireNonNull(javaModuleFactory, "javaModuleFactory");
    }

    @Override
    public byte[] handleLambdaBytecode(Class<?> hostClass, byte[] data, Object[] cpPatches) {
        try {
            final ClassLoader classLoader = hostClass.getClassLoader();

            final Object module = javaModuleFactory.getModule(hostClass);

            final ProtectionDomain protectionDomain = hostClass.getProtectionDomain();

            final byte[] transform = classFileTransformer.transform(module, classLoader, null, null, protectionDomain, data);
            if (transform != null) {
                return transform;
            }
            return data;
        } catch (Exception e) {
            LoggerFactory.getLogger(this.getClass()).warn("lambda transform fail Caused by:" + e.getMessage(), e);
            return data;
        }
    }
}