2 * Copyright (C) 2010 Mathieu Baudier <mbaudier@argeo.org>
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 package org
.argeo
.slc
.web
.mvc
.controllers
;
19 import org
.apache
.commons
.logging
.Log
;
20 import org
.apache
.commons
.logging
.LogFactory
;
21 import org
.argeo
.slc
.msg
.ExecutionAnswer
;
22 import org
.argeo
.slc
.msg
.event
.SlcEvent
;
23 import org
.argeo
.slc
.msg
.event
.SlcEventListener
;
24 import org
.argeo
.slc
.msg
.event
.SlcEventListenerDescriptor
;
25 import org
.argeo
.slc
.msg
.event
.SlcEventListenerRegister
;
26 import org
.springframework
.stereotype
.Controller
;
27 import org
.springframework
.web
.bind
.annotation
.RequestMapping
;
28 import org
.springframework
.web
.bind
.annotation
.RequestParam
;
31 public class EventController
{
33 private final static Log log
= LogFactory
.getLog(EventController
.class);
35 private Long defaultTimeout
= 10000l;
38 private SlcEventListener eventListener
= null;
39 // the following bean as a Session scope.
40 private SlcEventListenerRegister eventListenerRegister
;
43 @RequestMapping("/addEventListener.service")
44 public ExecutionAnswer
addEventListener(
45 @RequestParam(SlcEvent
.EVENT_TYPE
) String eventType
,
46 @RequestParam(value
= SlcEvent
.EVENT_FILTER
, required
= false) String eventFilter
) {
49 .addEventListenerDescriptor(new SlcEventListenerDescriptor(
50 eventType
, eventFilter
));
51 if (log
.isTraceEnabled()) {
52 log
.trace("Registered listener on register "
53 + eventListenerRegister
.getId() + " for type " + eventType
54 + ", filter=" + eventFilter
);
55 log
.trace("Nb of registered descriptors : "
56 + eventListenerRegister
.getDescriptorsCopy().size());
58 return ExecutionAnswer
.ok("Execution completed properly");
62 @RequestMapping("/removeEventListener.service")
63 public ExecutionAnswer
removeEventListener(
64 @RequestParam(SlcEvent
.EVENT_TYPE
) String eventType
,
65 @RequestParam(value
= SlcEvent
.EVENT_FILTER
, required
= false) String eventFilter
) {
68 .removeEventListenerDescriptor(new SlcEventListenerDescriptor(
69 eventType
, eventFilter
));
70 if (log
.isTraceEnabled()) {
71 log
.trace("Removed listener from register "
72 + eventListenerRegister
.getId() + " for type " + eventType
73 + ", filter=" + eventFilter
);
74 log
.trace("Nb of registered descriptors : "
75 + eventListenerRegister
.getDescriptorsCopy().size());
77 return ExecutionAnswer
.ok("Execution completed properly");
80 @RequestMapping("/pollEvent.service")
81 public Object
pollEvent(
82 @RequestParam(value
= "timeout", required
= false) String timeoutStr
) {
84 if (timeoutStr
!= null)
85 timeout
= Long
.parseLong(timeoutStr
);
87 timeout
= defaultTimeout
;
88 if (log
.isTraceEnabled()) {
89 log
.trace("Begin poolEvent.service :"
90 + " Nb of registered descriptors : "
91 + eventListenerRegister
.getDescriptorsCopy().size());
93 SlcEvent event
= eventListener
.listen(eventListenerRegister
.getId(),
94 eventListenerRegister
.getDescriptorsCopy(), timeout
);
96 if (log
.isTraceEnabled())
97 log
.trace("Event heard : " + event
.toString());
100 if (log
.isTraceEnabled())
101 log
.trace("No Event heard - Time out: ");
102 return ExecutionAnswer
.ok("Execution completed properly");
107 public void setEventListenerRegister(
108 SlcEventListenerRegister eventListenerRegister
) {
109 this.eventListenerRegister
= eventListenerRegister
;
112 public void setDefaultTimeout(Long defaultTimeout
) {
113 this.defaultTimeout
= defaultTimeout
;
116 public void setEventListener(SlcEventListener eventListener
) {
117 this.eventListener
= eventListener
;