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/*! * This program is free software; you can redistribute it and/or modify it under the * terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software * Foundation. * * You should have received a copy of the GNU Lesser General Public License along with this * program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html * or from the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. * * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. * See the GNU Lesser General Public License for more details. * * Copyright (c) 2002-2013 Pentaho Corporation.. All rights reserved. */ package org.pentaho.platform.web.servlet; import com.sun.jersey.api.core.ResourceConfig; import com.sun.jersey.spi.container.WebApplication; import com.sun.jersey.spi.container.servlet.WebConfig; import com.sun.jersey.spi.spring.container.servlet.SpringServlet; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.springframework.beans.BeansException; import org.springframework.context.ApplicationContext; import org.springframework.context.ApplicationContextAware; import org.springframework.context.ConfigurableApplicationContext; import javax.servlet.ServletException; import javax.servlet.ServletRequest; import javax.servlet.ServletResponse; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.io.IOException; import java.lang.reflect.InvocationHandler; import java.lang.reflect.Method; import java.lang.reflect.Proxy; import java.util.Map; import java.util.regex.Pattern; /** * This should only be used by a plugin in the plugin.spring.xml file to initialize a Jersey. The presence of this * servlet in the spring file will make it possible to write JAX-RS POJOs in your plugin. * * @author Aaron Phillips */ public class JAXRSPluginServlet extends SpringServlet implements ApplicationContextAware { private static final long serialVersionUID = 457538570048660945L; private static final String APPLICATION_WADL = "application.wadl"; // Matches: application.wadl, application.wadl/xsd0.xsd // Does not match: application.wadl/.xsd, application.wadl/xsd0/xsd0.xsd, application.wadl/a.xml private static final Pattern WADL_PATTERN = Pattern .compile("(.*)" + APPLICATION_WADL + "(/[A-Za-z0-9_]+(.xsd)+)*"); private ApplicationContext applicationContext; public static final ThreadLocal requestThread = new ThreadLocal(); private static final Log logger = LogFactory.getLog(JAXRSPluginServlet.class); public void setApplicationContext(ApplicationContext applicationContext) throws BeansException { this.applicationContext = applicationContext; } @Override protected ConfigurableApplicationContext getContext() { return (ConfigurableApplicationContext) applicationContext; } @Override public void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { logger.debug("servicing request for resource " + request.getPathInfo()); //$NON-NLS-1$ // Jersey's Servlet only responds to 'application.wadl', Plugin requests always have 'plugin/PLUGIN_NAME/api' as a // predicate i.e. /plugin/data-access/api/application.wadl. // // If the request ends with application.wadl, dispatch a Proxied request that rewrites the url to plain // 'application.wadl'. This is using a JDK Dynamic Proxy which increases overhead, but these requests should be // seldom and don't need to be that performant. if (WADL_PATTERN.matcher(request.getPathInfo()).find()) { final HttpServletRequest originalRequest = request; final String appWadlUrl = request.getPathInfo() .substring(request.getPathInfo().indexOf(APPLICATION_WADL), request.getPathInfo().length()); request = (HttpServletRequest) Proxy.newProxyInstance(getClass().getClassLoader(), new Class[] { HttpServletRequest.class }, new InvocationHandler() { public Object invoke(Object proxy, Method method, Object[] args) throws Throwable { if (method.getName().equals("getPathInfo")) { return appWadlUrl; } else if (method.getName().equals("getRequestURL")) { String url = originalRequest.getRequestURL().toString(); return new StringBuffer(url.substring(0, url.indexOf(originalRequest.getPathInfo())) + "/" + appWadlUrl); } else if (method.getName().equals("getRequestURI")) { String uri = originalRequest.getRequestURI(); return uri.substring(0, uri.indexOf(originalRequest.getPathInfo())) + "/" + appWadlUrl; } // We don't care about the Method, delegate out to real Request object. return method.invoke(originalRequest, args); } }); if (originalRequest.getRequestURL() != null) { requestThread.set(originalRequest.getRequestURL().toString()); } else if (originalRequest.getRequestURI() != null) { requestThread.set(originalRequest.getRequestURI().toString()); } } super.service(request, response); } @Override public void service(ServletRequest req, ServletResponse res) throws ServletException, IOException { super.service(req, res); } @Override protected void initiate(ResourceConfig rc, WebApplication wa) { if (logger.isDebugEnabled()) { rc.getFeatures().put(ResourceConfig.FEATURE_TRACE, true); rc.getFeatures().put(ResourceConfig.FEATURE_TRACE_PER_REQUEST, true); } super.initiate(rc, wa); } protected ResourceConfig getDefaultResourceConfig(Map<String, Object> props, WebConfig webConfig) throws ServletException { props.put("com.sun.jersey.config.property.WadlGeneratorConfig", "org.pentaho.platform.web.servlet.PentahoWadlGeneratorConfig"); return super.getDefaultResourceConfig(props, webConfig); } }