/*
* 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.instrument.interceptor;
import java.lang.reflect.Modifier;
import com.navercorp.pinpoint.bootstrap.context.MethodDescriptor;
import com.navercorp.pinpoint.bootstrap.instrument.InstrumentMethod;
import com.navercorp.pinpoint.bootstrap.interceptor.*;
import com.navercorp.pinpoint.bootstrap.interceptor.registry.InterceptorRegistry;
import com.navercorp.pinpoint.profiler.metadata.ApiMetaDataService;
import com.navercorp.pinpoint.profiler.util.JavaAssistUtils;
/**
* @author Jongho Moon
*
*/
public class InvokeCodeGenerator {
protected final ApiMetaDataService apiMetaDataService;
protected final InterceptorDefinition interceptorDefinition;
protected final InstrumentMethod targetMethod;
protected final int interceptorId;
public InvokeCodeGenerator(int interceptorId, InterceptorDefinition interceptorDefinition, InstrumentMethod targetMethod, ApiMetaDataService apiMetaDataService) {
if (interceptorDefinition == null) {
throw new NullPointerException("interceptorDefinition must not be null");
}
if (targetMethod == null) {
throw new NullPointerException("targetMethod must not be null");
}
if (apiMetaDataService == null) {
throw new NullPointerException("apiMetaDataService must not be null");
}
this.interceptorDefinition = interceptorDefinition;
this.targetMethod = targetMethod;
this.interceptorId = interceptorId;
this.apiMetaDataService = apiMetaDataService;
}
protected String getInterceptorType() {
// return interceptorDefinition.getInterceptorClass().getName();
return interceptorDefinition.getInterceptorBaseClass().getName();
}
protected String getParameterTypes() {
String[] parameterTypes = targetMethod.getParameterTypes();
return JavaAssistUtils.getParameterDescription(parameterTypes);
}
protected String getTarget() {
return Modifier.isStatic(targetMethod.getModifiers()) ? "null" : "this";
}
protected String getArguments() {
if (targetMethod.getParameterTypes().length == 0) {
return "null";
}
return "$args";
}
protected int getApiId() {
final MethodDescriptor descriptor = targetMethod.getDescriptor();
final int apiId = apiMetaDataService.cacheApi(descriptor);
return apiId;
}
protected String getInterceptorInvokerHelperClassName() {
return InterceptorInvokerHelper.class.getName();
}
protected String getInterceptorRegistryClassName() {
return InterceptorRegistry.class.getName();
}
protected String getInterceptorVar() {
return getInterceptorVar(interceptorId);
}
public static String getInterceptorVar(int interceptorId) {
return "_$PINPOINT$_interceptor" + interceptorId;
}
}