/*
* 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.bootstrap.interceptor.scope;
import com.navercorp.pinpoint.bootstrap.interceptor.StaticAroundInterceptor;
import com.navercorp.pinpoint.bootstrap.logging.PLogger;
import com.navercorp.pinpoint.bootstrap.logging.PLoggerFactory;
/**
* @author emeroad
*/
public class ScopedStaticAroundInterceptor implements StaticAroundInterceptor {
private final PLogger logger = PLoggerFactory.getLogger(getClass());
private final boolean debugEnabled = logger.isDebugEnabled();
private final StaticAroundInterceptor delegate;
private final InterceptorScope scope;
private final ExecutionPolicy policy;
public ScopedStaticAroundInterceptor(StaticAroundInterceptor delegate, InterceptorScope scope, ExecutionPolicy policy) {
if (delegate == null) {
throw new NullPointerException("delegate must not be null");
}
if (scope == null) {
throw new NullPointerException("scope must not be null");
}
if (policy == null) {
throw new NullPointerException("policy must not be null");
}
this.delegate = delegate;
this.scope = scope;
this.policy = policy;
}
@Override
public void before(Object target, String className, String methodName, String parameterDescription, Object[] args) {
final InterceptorScopeInvocation transaction = scope.getCurrentInvocation();
if (transaction.tryEnter(policy)) {
this.delegate.before(target, className, methodName, parameterDescription, args);
} else {
if (debugEnabled) {
logger.debug("tryBefore() returns false: interceptorScopeTransaction: {}, executionPoint: {}. Skip interceptor {}", transaction, policy, delegate.getClass());
}
}
}
@Override
public void after(Object target, String className, String methodName, String parameterDescription, Object[] args, Object result, Throwable throwable) {
final InterceptorScopeInvocation transaction = scope.getCurrentInvocation();
if (transaction.canLeave(policy)) {
this.delegate.after(target, className, methodName, parameterDescription, args, result, throwable);
transaction.leave(policy);
} else {
if (debugEnabled) {
logger.debug("tryAfter() returns false: interceptorScopeTransaction: {}, executionPoint: {}. Skip interceptor {}", transaction, policy, delegate.getClass());
}
}
}
}