/*
* Copyright 2015 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.resolver.condition;
import com.navercorp.pinpoint.bootstrap.logging.PLogger;
import com.navercorp.pinpoint.bootstrap.logging.PLoggerFactory;
import com.navercorp.pinpoint.common.util.StringUtils;
/**
* @author HyunGil Jeong
*
*/
public class ClassResourceCondition implements Condition<String> {
private static final String CLASS_EXTENSION = ".class";
private final PLogger logger = PLoggerFactory.getLogger(this.getClass().getName());
private String getClassNameAsResource(String className) {
String classNameAsResource = className.replace('.', '/');
return classNameAsResource.endsWith(CLASS_EXTENSION) ? classNameAsResource : classNameAsResource.concat(CLASS_EXTENSION);
}
/**
* Checks if the specified class can be found in the current System ClassLoader's search path.
*
* @param requiredClass the fully qualified class name of the class to check
* @return <tt>true</tt> if the specified class can be found in the system class loader's search path,
* <tt>false</tt> if otherwise
*/
@Override
public boolean check(String requiredClass) {
if (StringUtils.isEmpty(requiredClass)) {
return false;
}
String classNameAsResource = getClassNameAsResource(requiredClass);
if (ClassLoader.getSystemResource(classNameAsResource) != null) {
logger.debug("Resource found - [{}]", classNameAsResource);
return true;
} else {
logger.debug("Resource not found - [{}]", classNameAsResource);
return false;
}
}
}