Getting remote messaging to work with Java/Spring and Flex

Question

I am trying to get remote messaging working on a Flex client with a Java/Spring backend.
I have the channel is setup on the server as such:
< 
channel-definition id="long-polling-channel"
class="mx.messaging.channels.AMFChannel">
<endpoint
url="http://{server.name}:{server.port}/{context.root}/messagebroker/amflongpolling"
class="flex.messaging.endpoints.AMFEndpoint" />
<properties>
<!-- Values for near-real time messaging -->
<polling-enabled>true</polling-enabled>
<polling-interval-millis>0</polling-interval-millis>
<wait-interval-millis>-1</wait-interval-millis>
<max-waiting-poll-requests>
10
</max-waiting-poll-requests>
</properties>
</channel-definition>
In the Spring context, I am setting up the MessageBroker, MessageTemplate, and some custom wrapper code:
<? 
xml version="1.0" encoding="UTF-8"?>< 
beans xmlns="http://www.springframework.org/schema/beans"
xmlns:flex="http://www.springframework.org/schema/flex" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/flex
http://www.springframework.org/schema/flex/spring-flex-1.0.xsd" >
<flex:message-broker id="messageServiceBroker" />
<flex:message-destination id="event-bus"
message-broker="messageServiceBroker" channels="long-polling-channel"
message-time-to-live="1000"
subscription-timeout-minutes="5"
throttle-inbound-max-frequency="500" throttle-inbound-policy="ERROR"
throttle-outbound-max-frequency="500" throttle-outbound-policy="IGNORE" />
<bean id="defaultMessageTemplate" class="org.springframework.flex.messaging.MessageTemplate">
<property name="defaultDestination" value="event-bus" />
<property name="messageBroker" ref="messageServiceBroker" />
</bean>
<bean id="MessagingServices" class="com.bofa.esm.utility.messaging.MessagingServices">
<property name="messageTemplate" ref="defaultMessageTemplate" />
<property name="destinationName" value="event-bus" />
<property name="scheduler" ref="PersistentQuartzScheduler" />
</bean></ 
beans>
The custom wrapper code is insignificant, but it basically creates a thread and posts a custom context over and over every minute.  The actual message is posted with this bit of code:
     messageTemplate.send(msgCtx);
On the Flex side, I create a Channel and ChannelSet like thus:
public  
static function getMessageChannelSet():ChannelSet{ 
if(messageChannelSet == null){messageChannelSet =
new ChannelSet();
//e.g. 'http://{server.name}:{server.port}/{context.root}/messagebroker/amfpolling';
var messageURL:String = getBaseUrl() + MESSAGE_URL; 
var channel:AMFChannel = new AMFChannel(MESSAGE_CHANNEL_NAME,messageURL);messageChannelSet.addChannel(channel);
return channelSet;}
And then, latter I create a Consumer and add the channelset to it:
var  
_messageConsumer:Consumer = new Consumer(); 
var msgChannel:ChannelSet = RemotingUtility.getMessageChannelSet();
var encrypted:Object = this.encrypt(_sessionModel.username, _sessionModel.password); 
var token:AsyncToken = msgChannel.login(encrypted.userId, encrypted.password); 
_messageConsumer.channelSet = msgChannel;
_messageConsumer.destination =
"event-bus";_messageConsumer.addEventListener(MessageEvent.RESULT,
this.onMessage);
The problem is, I dont get the messages from the server.  In fact, from what I can tell by the logs when I post a message from the server, it doesn't appear that anything is listening to the channel:
09:32:03,106 INFO [MessagingServices] Posting message...
09:32:08,184 INFO [STDOUT] [BlazeDS]Before invoke service: message-service
incomingMessage: Flex Message (flex.messaging.messages.AsyncMessage)
clientId = CC2B0D5D-B00A-CD8B-CE43-0430C8CC10DF
correlationId = null
destination = event-bus
messageId = CC3211B4-F80E-15FE-076C-00C963ED5D01
timestamp = 1278595928184
timeToLive = 0
body = com.bofa.esm.utility.messaging.SimpleMessageContext@159a771
09:32:08,200 INFO [STDOUT] [BlazeDS]Before invoke service: message-service
incomingMessage: Flex Message (flex.messaging.messages.AsyncMessage)
clientId = CC2B0D5D-B00A-CD8B-CE43-0430C8CC10DF
correlationId = null
destination = event-bus
messageId = CC3211B4-F80E-15FE-076C-00C963ED5D01
timestamp = 1278595928184
timeToLive = 0
body = com.bofa.esm.utility.messaging.SimpleMessageContext@159a771
09:32:08,200 INFO [STDOUT] [BlazeDS]Sending message: Flex Message (flex.messaging.messages.AsyncMessage)
clientId = CC2B0D5D-B00A-CD8B-CE43-0430C8CC10DF
correlationId = null
destination = event-bus
messageId = CC3211B4-F80E-15FE-076C-00C963ED5D01
timestamp = 1278595928184
timeToLive = 1000
body = com.bofa.esm.utility.messaging.SimpleMessageContext@159a771
to subscribed clientIds: []
09:32:08,200 INFO [STDOUT] [BlazeDS]Sending message: Flex Message (flex.messaging.messages.AsyncMessage)
clientId = CC2B0D5D-B00A-CD8B-CE43-0430C8CC10DF
correlationId = null
destination = event-bus
messageId = CC3211B4-F80E-15FE-076C-00C963ED5D01
timestamp = 1278595928184
timeToLive = 1000
body = com.bofa.esm.utility.messaging.SimpleMessageContext@159a771
to subscribed clientIds: []
09:32:08,200 INFO [STDOUT] [BlazeDS]After invoke service: message-service; execution time = 0ms
09:32:08,200 INFO [STDOUT] [BlazeDS]After invoke service: message-service; execution time = 0ms
09:32:08,200 INFO [STDOUT] [BlazeDS]After invoke service: message-service
reply: null
09:32:08,200 INFO [STDOUT] [BlazeDS]After invoke service: message-service
reply: null
09:32:12,075 INFO [STDOUT] [BlazeDS]Before invoke service: message-service
incomingMessage: Flex Message (flex.messaging.messages.AsyncMessage)
clientId = CC2B0D5D-B00A-CD8B-CE43-0430C8CC10DF
correlationId = null
destination = event-bus
messageId = CC3236D0-7B0D-182C-5632-C84FB4D1E215
timestamp = 1278595932075
timeToLive = 0
body = com.bofa.esm.utility.messaging.SimpleMessageContext@1a6595b
09:32:12,075 INFO [STDOUT] [BlazeDS]Before invoke service: message-service
incomingMessage: Flex Message (flex.messaging.messages.AsyncMessage)
clientId = CC2B0D5D-B00A-CD8B-CE43-0430C8CC10DF
correlationId = null
destination = event-bus
messageId = CC3236D0-7B0D-182C-5632-C84FB4D1E215
timestamp = 1278595932075
timeToLive = 0
body = com.bofa.esm.utility.messaging.SimpleMessageContext@1a6595b
09:32:12,075 INFO [STDOUT] [BlazeDS]Sending message: Flex Message (flex.messaging.messages.AsyncMessage)
clientId = CC2B0D5D-B00A-CD8B-CE43-0430C8CC10DF
correlationId = null
destination = event-bus
messageId = CC3236D0-7B0D-182C-5632-C84FB4D1E215
timestamp = 1278595932075
timeToLive = 1000
body = com.bofa.esm.utility.messaging.SimpleMessageContext@1a6595b
to subscribed clientIds: []
09:32:12,075 INFO [STDOUT] [BlazeDS]Sending message: Flex Message (flex.messaging.messages.AsyncMessage)
clientId = CC2B0D5D-B00A-CD8B-CE43-0430C8CC10DF
correlationId = null
destination = event-bus
messageId = CC3236D0-7B0D-182C-5632-C84FB4D1E215
timestamp = 1278595932075
timeToLive = 1000
body = com.bofa.esm.utility.messaging.SimpleMessageContext@1a6595b
to subscribed clientIds: []
09:32:12,075 INFO [STDOUT] [BlazeDS]After invoke service: message-service; execution time = 0ms
09:32:12,075 INFO [STDOUT] [BlazeDS]After invoke service: message-service; execution time = 0ms
09:32:12,075 INFO [STDOUT] [BlazeDS]After invoke service: message-service
reply: null
09:32:12,075 INFO [STDOUT] [BlazeDS]After invoke service: message-service
reply: null
Shouldn't the "subscribed clientIds: []" have something listed as subscribed?  What am I missing?

Answer 1

I made some modifications to the code section that registers the Consumer:
  Alert.show(
"onRegister running","AppShellMediator",Alert.OK); 
  var _messageConsumer:Consumer = new Consumer(); 
  var msgChannel:ChannelSet = RemotingUtility.getMessageChannelSet();  _messageConsumer.channelSet = msgChannel;
  _messageConsumer.destination =
"event-bus";  _messageConsumer.addEventListener(MessageEvent.RESULT,
this.onMessage);  _messageConsumer.subscribe(
"MessagingClient"+Math.random()); 
if(_messageConsumer.connected)      Alert.show(
"Message Channel is connected","AppShellMediator",Alert.OK); 
  if(_messageConsumer.authenticated)      Alert.show(
"Message Channel is authenticated","AppShellMediator",Alert.OK); 
  if(_messageConsumer.subscribed)      Alert.show(
"Message Channel is subscribed, clientId: "+_messageConsumer.clientId,"AppShellMediator",Alert.OK);
I am now calling the subscribe method, then testing to see if the consumer is connected, authorized, and subscribed.  The first two return True, the last one does not.  So, despite the call to subscribe(), the Consumer is not subscribed.  Is there a way to figure out why?  Possibly there was an error somewhere?