001/* 002 * (C) Copyright 2006-2007 Nuxeo SA (http://nuxeo.com/) and others. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 * 016 * Contributors: 017 * Nuxeo - initial API and implementation 018 * 019 * $Id: JOOoConvertPluginImpl.java 18651 2007-05-13 20:28:53Z sfermigier $ 020 */ 021 022package org.nuxeo.ecm.platform.ui.web.restAPI; 023 024import javax.faces.event.PhaseId; 025import javax.servlet.http.HttpServletRequest; 026 027import org.apache.commons.logging.Log; 028import org.apache.commons.logging.LogFactory; 029import org.jboss.seam.contexts.FacesLifecycle; 030import org.jboss.seam.contexts.Lifecycle; 031import org.jboss.seam.contexts.ServletLifecycle; 032import org.jboss.seam.core.ConversationPropagation; 033import org.jboss.seam.core.Manager; 034import org.jboss.seam.servlet.ServletRequestSessionMap; 035import org.jboss.seam.web.ServletContexts; 036import org.nuxeo.ecm.platform.ui.web.util.SeamComponentCallHelper; 037import org.nuxeo.runtime.transaction.TransactionHelper; 038import org.restlet.Filter; 039import org.restlet.Restlet; 040import org.restlet.data.MediaType; 041import org.restlet.data.Request; 042import org.restlet.data.Response; 043import org.restlet.data.Status; 044 045import com.noelios.restlet.ext.servlet.ServletCall; 046import com.noelios.restlet.http.HttpCall; 047import com.noelios.restlet.http.HttpRequest; 048 049/** 050 * Restlet Filter to initialized Seam context 051 * 052 * @author <a href="mailto:td@nuxeo.com">Thierry Delprat</a> 053 * @author Florent Guillaume 054 */ 055public class SeamRestletFilter extends Filter { 056 057 private static final Log log = LogFactory.getLog(SeamRestletFilter.class); 058 059 private boolean useConversation = false; 060 061 public SeamRestletFilter() { 062 this(false); 063 } 064 065 public SeamRestletFilter(boolean needConversation) { 066 useConversation = needConversation; 067 } 068 069 @Override 070 protected void beforeHandle(Request request, Response response) { 071 FacesLifecycle.setPhaseId(PhaseId.INVOKE_APPLICATION); 072 if (useConversation && (request instanceof HttpRequest)) { 073 // Complete HTTP call with conversation 074 HttpCall httpCall = ((HttpRequest) request).getHttpCall(); 075 if (httpCall instanceof ServletCall) { 076 HttpServletRequest httpServletRequest = ((ServletCall) httpCall).getRequest(); 077 078 // see ContextualHttpServletRequest / SOAPRequestHandler 079 ServletLifecycle.beginRequest(httpServletRequest); 080 ServletContexts.instance().setRequest(httpServletRequest); 081 ConversationPropagation.instance().restoreConversationId(httpServletRequest.getParameterMap()); 082 Manager.instance().restoreConversation(); 083 ServletLifecycle.resumeConversation(httpServletRequest); 084 Manager.instance().handleConversationPropagation(httpServletRequest.getParameterMap()); 085 return; 086 } 087 } 088 // Standard call without conversation 089 Lifecycle.beginCall(); 090 } 091 092 @Override 093 protected void afterHandle(Request request, Response response) { 094 FacesLifecycle.setPhaseId(null); 095 if (useConversation && request instanceof HttpRequest) { 096 HttpCall httpCall = ((HttpRequest) request).getHttpCall(); 097 if (httpCall instanceof ServletCall) { 098 if (TransactionHelper.isTransactionActive()) { 099 // early commit of the transaction before releasing the 100 // conversation lock to avoid a race condition on concurrent 101 // access to the same documentManager instance by threads / 102 // requests sharing the same conversation and triggering 103 // StorageException "closed connection handle" on the RA 104 // pool 105 TransactionHelper.commitOrRollbackTransaction(); 106 } 107 HttpServletRequest httpServletRequest = ((ServletCall) httpCall).getRequest(); 108 // see ContextualHttpServletRequest / SOAPRequestHandler 109 Manager.instance().endRequest(new ServletRequestSessionMap(httpServletRequest)); 110 ServletLifecycle.endRequest(httpServletRequest); 111 return; 112 } 113 } 114 Lifecycle.endCall(); 115 } 116 117 @Override 118 protected void doHandle(Request request, Response response) { 119 if (getNext() != null) { 120 // get the Seam Wrapper from the instance 121 Restlet next = getNext(); 122 Restlet seamRestlet = (Restlet) SeamComponentCallHelper.getSeamComponentByRef(next); 123 if (seamRestlet == null) { 124 final String errMsg = "Cannot get Seam component for restlet "; 125 log.error(errMsg + next); 126 response.setEntity(errMsg, MediaType.TEXT_PLAIN); 127 } else { 128 try { 129 seamRestlet.handle(request, response); 130 } catch (RuntimeException e) { 131 log.error("Restlet handling error", e); 132 response.setEntity("Error while calling Seam aware Restlet: " + e.getMessage(), 133 MediaType.TEXT_PLAIN); 134 } 135 } 136 } else { 137 response.setStatus(Status.CLIENT_ERROR_NOT_FOUND); 138 } 139 } 140 141}