/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.skywalking.apm.toolkit.activation.trace;

import net.bytebuddy.description.method.MethodDescription;
import net.bytebuddy.matcher.ElementMatcher;
import org.apache.skywalking.apm.agent.core.plugin.interceptor.enhance.ClassStaticMethodsEnhancePluginDefine;
import org.apache.skywalking.apm.agent.core.plugin.match.ClassMatch;
import org.apache.skywalking.apm.agent.core.plugin.match.NameMatch;
import org.apache.skywalking.apm.agent.core.plugin.interceptor.StaticMethodsInterceptPoint;

import static net.bytebuddy.matcher.ElementMatchers.named;

/**
 * Active the toolkit class "TraceContext".
 * Should not dependency or import any class in "skywalking-toolkit-trace-context" module.
 * Activation's classloader is diff from "TraceContext",
 * using direct will trigger classloader issue.
 * <p>
 * Created by xin on 2016/12/15.
 */
public class TraceContextActivation extends ClassStaticMethodsEnhancePluginDefine {
    /**
     * @return the target class, which needs active.
     */
    @Override
    protected ClassMatch enhanceClass() {
        return NameMatch.byName("TraceContext");
    }

    /**
     * @return the collection of {@link StaticMethodsInterceptPoint}, represent the intercepted methods and their
     * interceptors.
     */
    @Override
    protected StaticMethodsInterceptPoint[] getStaticMethodsInterceptPoints() {
        return new StaticMethodsInterceptPoint[] {
            new StaticMethodsInterceptPoint() {
                @Override
                public ElementMatcher<MethodDescription> getMethodsMatcher() {
                    return named("traceId");
                }

                @Override
                public String getMethodsInterceptor() {
                    return "TraceContextInterceptor";
                }

                @Override public boolean isOverrideArgs() {
                    return false;
                }
            }
        };
    }
}
