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/**
 * Copyright 2013-2021 Valery Silaev (http://vsilaev.com)
 *
 * 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 org.apache.commons.javaflow.instrumentation.cdi;

import java.lang.instrument.ClassFileTransformer;
import java.lang.instrument.Instrumentation;

import org.apache.commons.javaflow.instrumentation.common.AbstractInstrumentationAgent;

public class CdiProxyInstrumentationAgent extends AbstractInstrumentationAgent {
    
    private CdiProxyInstrumentationAgent() {}
    
    /**
     * JVM hook to statically load the javaagent at startup.
     * 
     * After the Java Virtual Machine (JVM) has initialized, the premain method
     * will be called. Then the real application main method will be called.
     * 
     * @param args
     * @param instrumentation
     * @throws Exception
     */
    public static void premain(String args, Instrumentation instrumentation) throws Exception {
        new CdiProxyInstrumentationAgent().install(args, instrumentation);
    }

    /**
     * JVM hook to dynamically load javaagent at runtime.
     * 
     * The agent class may have an agentmain method for use when the agent is
     * started after VM startup.
     * 
     * @param args
     * @param instrumentation
     * @throws Exception
     */
    public static void agentmain(String args, Instrumentation instrumentation) throws Exception {
        new CdiProxyInstrumentationAgent().attach(args, instrumentation);
    }

    protected ClassFileTransformer createTransformer() {
        return new CdiProxyClassTransformer();
    }
}