/**
* 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.lucene.gdata.hivemind.webservice;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import javax.servlet.http.HttpServletRequest;
import com.caucho.hessian.server.HessianSkeleton;
/**
* Simple provider implementation.
* @author Simon Willnauer
*
*/
public class HessianSkeletonProviderImpl implements HessianSkeletonProvider {
private Map<String, WebserviceMappingBean> mapping;
private ConcurrentHashMap<String, HessianSkeleton> skeletonCache = new ConcurrentHashMap<String, HessianSkeleton>();
/**
* Creates a new HessianSkeletonProviderImpl instance
*/
public HessianSkeletonProviderImpl() {
super();
}
/**
* The last part of the request URL is used to identify a configured service
* mapping.
*
* @param path -
* the servletrequest path info
* @return - the corresponding HessianSkeleton
*/
protected HessianSkeleton getMappingFromPath(String path) {
if (path.endsWith("/"))
path = path.substring(0, path.length() - 1);
String requestedService = path.substring(path.lastIndexOf("/") + 1);
HessianSkeleton retVal = this.skeletonCache.get(requestedService);
if (retVal == null) {
WebserviceMappingBean wsBean = this.mapping.get(requestedService);
if (wsBean == null)
throw new NoSuchServiceException();
if (!checkInterface(wsBean))
throw new RuntimeException(
"The configured webservice interface is not assignable from the corresponding service");
retVal = new HessianSkeleton(wsBean.getServiceImpl(), wsBean
.getServiceInterface());
/*
* rather create this service twice as synchronize the whole block
*/
this.skeletonCache.putIfAbsent(requestedService, retVal);
}
return retVal;
}
@SuppressWarnings("unchecked")
private boolean checkInterface(WebserviceMappingBean bean) {
return bean.getServiceInterface().isAssignableFrom(
bean.getServiceImpl().getClass());
}
/**
* @see org.apache.lucene.gdata.hivemind.webservice.HessianSkeletonProvider#getServiceSkeletonInvoker(javax.servlet.http.HttpServletRequest)
*/
public HessianServiceSkeletonInvoker getServiceSkeletonInvoker(
HttpServletRequest arg0) {
if (arg0 == null)
throw new IllegalArgumentException(
"HttpServletRequest must not be null");
HessianSkeleton mappingFromRequest = getMappingFromPath(arg0
.getPathInfo());
return new HessianServiceSkeletonInvokerImpl(mappingFromRequest);
}
/**
* @return Returns the mapping.
*/
public Map<String, WebserviceMappingBean> getMapping() {
return this.mapping;
}
/**
* @param mapping
* The mapping to set.
*/
public void setMapping(Map<String, WebserviceMappingBean> mapping) {
this.mapping = mapping;
}
}