001 /**
002 * GRANITE DATA SERVICES
003 * Copyright (C) 2006-2013 GRANITE DATA SERVICES S.A.S.
004 *
005 * This file is part of the Granite Data Services Platform.
006 *
007 * Granite Data Services is free software; you can redistribute it and/or
008 * modify it under the terms of the GNU Lesser General Public
009 * License as published by the Free Software Foundation; either
010 * version 2.1 of the License, or (at your option) any later version.
011 *
012 * Granite Data Services is distributed in the hope that it will be useful,
013 * but WITHOUT ANY WARRANTY; without even the implied warranty of
014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
015 * General Public License for more details.
016 *
017 * You should have received a copy of the GNU Lesser General Public
018 * License along with this library; if not, write to the Free Software
019 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
020 * USA, or see <http://www.gnu.org/licenses/>.
021 */
022 package org.granite.tide.seam.async;
023
024 import java.lang.annotation.Annotation;
025 import java.util.Date;
026
027 import org.granite.tide.seam.AbstractSeamServiceContext;
028 import org.granite.tide.seam.TideInvocation;
029 import org.jboss.seam.Component;
030 import org.jboss.seam.annotations.async.Asynchronous;
031 import org.jboss.seam.annotations.async.Duration;
032 import org.jboss.seam.annotations.async.Expiration;
033 import org.jboss.seam.annotations.async.FinalExpiration;
034 import org.jboss.seam.annotations.async.IntervalCron;
035 import org.jboss.seam.annotations.async.IntervalDuration;
036 import org.jboss.seam.annotations.intercept.AroundInvoke;
037 import org.jboss.seam.annotations.intercept.Interceptor;
038 import org.jboss.seam.annotations.intercept.InterceptorType;
039 import org.jboss.seam.async.AbstractDispatcher;
040 import org.jboss.seam.async.AsynchronousInterceptor;
041 import org.jboss.seam.contexts.Contexts;
042 import org.jboss.seam.intercept.AbstractInterceptor;
043 import org.jboss.seam.intercept.InvocationContext;
044
045 /**
046 * Slightly modified version of the Seam asynchronous interceptor which saves the current username
047 *
048 * Dispatches method calls to @Asynchronous methods
049 * asynchronously, and returns the "timer" object
050 * if necessary.
051 *
052 * @author William DRAI
053 *
054 */
055 @Interceptor(stateless=true, type=InterceptorType.CLIENT, around={ AsynchronousInterceptor.class })
056 public class TideAsynchronousInterceptor extends AbstractInterceptor {
057
058 private static final long serialVersionUID = 9194177339867853303L;
059
060
061 @AroundInvoke
062 public Object aroundInvoke(InvocationContext invocation) throws Exception {
063 if (invocation.getTarget() instanceof AsynchronousInvoker) {
064 if (Contexts.getEventContext().isSet(AbstractDispatcher.EXECUTING_ASYNCHRONOUS_CALL))
065 TideInvocation.init();
066 return invocation.proceed();
067 }
068
069 boolean scheduleAsync = invocation.getMethod().isAnnotationPresent(Asynchronous.class) &&
070 (!Contexts.getEventContext().isSet(AbstractDispatcher.EXECUTING_ASYNCHRONOUS_CALL)
071 || Contexts.getEventContext().isSet("org.jboss.seam.async.AsynchronousIntercepter.REENTRANT"));
072 if (scheduleAsync) {
073 AbstractSeamServiceContext serviceContext = (AbstractSeamServiceContext)Component.getInstance(AbstractSeamServiceContext.COMPONENT_NAME, false);
074 if (serviceContext != null && serviceContext.getSessionId() != null) {
075 Annotation[][] parameterAnnotations = invocation.getMethod().getParameterAnnotations();
076 Long duration = null;
077 Date expiration = null;
078 Date finalExpiration = null;
079 Long intervalDuration = null;
080 String intervalCron = null;
081 for (int i = 0; i < parameterAnnotations.length; i++) {
082 Annotation[] annotations = parameterAnnotations[i];
083 for (Annotation annotation : annotations) {
084 if (annotation.annotationType().equals(Duration.class))
085 duration = (Long)invocation.getParameters()[i];
086 else if (annotation.annotationType().equals(Expiration.class))
087 expiration = (Date)invocation.getParameters()[i];
088 else if (annotation.annotationType().equals(FinalExpiration.class))
089 finalExpiration = (Date)invocation.getParameters()[i];
090 else if (annotation.annotationType().equals(IntervalDuration.class))
091 intervalDuration = (Long)invocation.getParameters()[i];
092 else if (annotation.annotationType().equals(IntervalCron.class))
093 intervalCron = (String)invocation.getParameters()[i];
094 }
095 }
096
097 String targetComponentName = getComponent().getName();
098 Class<?> targetComponentClass = getComponent().getBeanClass();
099 String methodName = invocation.getMethod().getName();
100 Class<?>[] paramTypes = invocation.getMethod().getParameterTypes();
101 Object[] params = invocation.getParameters();
102
103 AsynchronousInvoker invoker = (AsynchronousInvoker)Component.getInstance("org.granite.tide.seam.asynchronousInvoker");
104
105 AsyncContext asyncContext = serviceContext.getAsyncContext();
106
107 if (intervalCron != null)
108 return invoker.invokeAsynchronousCron(asyncContext, targetComponentName, targetComponentClass, methodName, paramTypes, params,
109 duration, expiration, finalExpiration, intervalCron);
110
111 if (finalExpiration != null)
112 return invoker.invokeAsynchronousDuration(asyncContext, targetComponentName, targetComponentClass, methodName, paramTypes, params,
113 duration, expiration, finalExpiration, intervalDuration);
114
115 return invoker.invokeAsynchronousDuration(asyncContext, targetComponentName, targetComponentClass, methodName, paramTypes, params,
116 duration, expiration, intervalDuration);
117 }
118 }
119
120 return invocation.proceed();
121 }
122
123 // Needed for Seam 2.1
124 public boolean isInterceptorEnabled() {
125 return true;
126 }
127 }