/*
 * 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.plugin.ehcache.v2;

import org.apache.skywalking.apm.agent.core.context.ContextManager;
import org.apache.skywalking.apm.agent.core.context.tag.Tags;
import org.apache.skywalking.apm.agent.core.context.trace.AbstractSpan;
import org.apache.skywalking.apm.agent.core.context.trace.SpanLayer;
import org.apache.skywalking.apm.agent.core.plugin.interceptor.enhance.EnhancedInstance;
import org.apache.skywalking.apm.agent.core.plugin.interceptor.enhance.InstanceMethodsAroundInterceptor;
import org.apache.skywalking.apm.agent.core.plugin.interceptor.enhance.MethodInterceptResult;
import org.apache.skywalking.apm.network.trace.component.ComponentsDefine;

import java.lang.reflect.Method;

import static org.apache.skywalking.apm.plugin.ehcache.v2.EncacheOperationConvertor.parseOperation;
import static org.apache.skywalking.apm.plugin.ehcache.v2.define.EhcachePluginInstrumentation.LOCK_ENHANCE_METHOD_SUFFIX;

public class EhcacheLockInterceptor implements InstanceMethodsAroundInterceptor {

    @Override
    public void beforeMethod(EnhancedInstance objInst, Method method, Object[] allArguments, Class<?>[] argumentsTypes,
                             MethodInterceptResult result) throws Throwable {
        EhcacheEnhanceInfo enhanceInfo = (EhcacheEnhanceInfo) objInst.getSkyWalkingDynamicField();

        String operateName = method.getName()
                .substring(0, method.getName().length() - LOCK_ENHANCE_METHOD_SUFFIX.length());

        AbstractSpan span = ContextManager.createLocalSpan("Ehcache/" + operateName + "/" + enhanceInfo.getCacheName());
        span.setComponent(ComponentsDefine.EHCACHE);
        SpanLayer.asCache(span);
        if (allArguments != null && allArguments.length > 0 && allArguments[0] instanceof String) {
            Tags.CACHE_KEY.set(span, enhanceInfo.getCacheName() + "." + allArguments[0]);
        }
        Tags.CACHE_TYPE.set(span, "Ehcache");
        Tags.CACHE_CMD.set(span, operateName);
        parseOperation(operateName).ifPresent(op -> Tags.CACHE_OP.set(span, op));
    }

    @Override
    public Object afterMethod(EnhancedInstance objInst, Method method, Object[] allArguments, Class<?>[] argumentsTypes,
                              Object ret) throws Throwable {
        ContextManager.stopSpan();
        return ret;
    }

    @Override
    public void handleMethodException(EnhancedInstance objInst, Method method, Object[] allArguments,
                                      Class<?>[] argumentsTypes, Throwable t) {
        ContextManager.activeSpan().log(t);
    }
}
