/*
* 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.jmeter.protocol.http.proxy;
import java.io.IOException;
import java.lang.reflect.Modifier;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.apache.jmeter.util.JMeterUtils;
import org.slf4j.LoggerFactory;
import org.apache.jorphan.reflect.ClassFinder;
import org.slf4j.Logger;
/**
* {@link SamplerCreator} factory
*/
public class SamplerCreatorFactory {
private static final Logger log = LoggerFactory.getLogger(SamplerCreatorFactory.class);
private static final SamplerCreator DEFAULT_SAMPLER_CREATOR = new DefaultSamplerCreator();
private final Map<String, SamplerCreator> samplerCreatorMap = new HashMap<>();
/**
*
*/
public SamplerCreatorFactory() {
init();
}
/**
* Initialize factory from classpath
*/
private void init() { // WARNING: called from ctor so must not be overridden (i.e. must be private or final)
try {
List<String> listClasses = ClassFinder.findClassesThatExtend(
JMeterUtils.getSearchPaths(),
new Class[] {SamplerCreator.class });
for (String strClassName : listClasses) {
try {
if(log.isDebugEnabled()) {
log.debug("Loading class: {}", strClassName);
}
Class<?> commandClass = Class.forName(strClassName);
if (!Modifier.isAbstract(commandClass.getModifiers())) {
if(log.isDebugEnabled()) {
log.debug("Instantiating: {}", commandClass.getName());
}
SamplerCreator creator = (SamplerCreator) commandClass.newInstance();
String[] contentTypes = creator.getManagedContentTypes();
for (String contentType : contentTypes) {
if(log.isDebugEnabled()) {
log.debug("Registering samplerCreator {} for content type:{}",
commandClass.getName(), contentType);
}
SamplerCreator oldSamplerCreator = samplerCreatorMap.put(contentType, creator);
if(oldSamplerCreator!=null) {
log.warn("A sampler creator was already registered for:{}, class:{}, it will be replaced",
contentType, oldSamplerCreator.getClass());
}
}
}
} catch (Exception e) {
log.error("Exception registering {} with implementation:{}",
SamplerCreator.class.getName(),strClassName, e);
}
}
} catch (IOException e) {
log.error("Exception finding implementations of {}", SamplerCreator.class, e);
}
}
/**
* Gets {@link SamplerCreator} for content type, if none is found returns {@link DefaultSamplerCreator}
* @param request {@link HttpRequestHdr} from which the content type should be used
* @param pageEncodings Map of pageEncodings
* @param formEncodings Map of formEncodings
* @return SamplerCreator for the content type of the <code>request</code>, or {@link DefaultSamplerCreator} when none is found
*/
public SamplerCreator getSamplerCreator(HttpRequestHdr request,
Map<String, String> pageEncodings, Map<String, String> formEncodings) {
SamplerCreator creator = samplerCreatorMap.get(request.getContentType());
if(creator == null) {
return DEFAULT_SAMPLER_CREATOR;
}
return creator;
}
}