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.Request; 039import org.restlet.Response; 040import org.restlet.Restlet; 041import org.restlet.data.MediaType; 042import org.restlet.data.Status; 043import org.restlet.engine.adapter.HttpRequest; 044import org.restlet.engine.adapter.ServerCall; 045import org.restlet.ext.servlet.internal.ServletCall; 046import org.restlet.routing.Filter; 047 048/** 049 * Restlet Filter to initialized Seam context 050 * 051 * @author <a href="mailto:td@nuxeo.com">Thierry Delprat</a> 052 * @author Florent Guillaume 053 */ 054public class SeamRestletFilter extends Filter { 055 056 private static final Log log = LogFactory.getLog(SeamRestletFilter.class); 057 058 private boolean useConversation = false; 059 060 public SeamRestletFilter() { 061 this(false); 062 } 063 064 public SeamRestletFilter(boolean needConversation) { 065 useConversation = needConversation; 066 } 067 068 @Override 069 protected int beforeHandle(Request request, Response response) { 070 FacesLifecycle.setPhaseId(PhaseId.INVOKE_APPLICATION); 071 if (useConversation && (request instanceof HttpRequest)) { 072 // Complete HTTP call with conversation 073 ServerCall httpCall = ((HttpRequest) request).getHttpCall(); 074 if (httpCall instanceof ServletCall) { 075 HttpServletRequest httpServletRequest = ((ServletCall) httpCall).getRequest(); 076 077 // see ContextualHttpServletRequest / SOAPRequestHandler 078 ServletLifecycle.beginRequest(httpServletRequest); 079 ServletContexts.instance().setRequest(httpServletRequest); 080 ConversationPropagation.instance().restoreConversationId(httpServletRequest.getParameterMap()); 081 Manager.instance().restoreConversation(); 082 ServletLifecycle.resumeConversation(httpServletRequest); 083 Manager.instance().handleConversationPropagation(httpServletRequest.getParameterMap()); 084 return CONTINUE; 085 } 086 } 087 // Standard call without conversation 088 Lifecycle.beginCall(); 089 return CONTINUE; 090 } 091 092 @Override 093 protected void afterHandle(Request request, Response response) { 094 FacesLifecycle.setPhaseId(null); 095 if (useConversation && request instanceof HttpRequest) { 096 ServerCall 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 int 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 return CONTINUE; 140 } 141 142}