Problem with programmatically building a Gravity Channel

[Murray Furtado]

Hi

according to Chapter 3 of the Granite reference doc - 'When using a services-config.xml file, it's necessary to use the compiler option -services path/to/services-config.xml so the Flex SDK itself can handle the creation of the channel and other remoting objects. If you don't use this option, you will have to specify manually a channel and endpoint for each destination in ActionScript 3 :

private function init():void {
        srv = new RemoteObject("myService");
        srv.source = "myService";
        srv.channelSet = new ChannelSet();
        srv.channelSet.addChannel(new AMFChannel("graniteamf",
            "http://{server.name}:{server.port}/myapp/graniteamf/amf"));
        srv.showBusyCursor = true;
}'


I am trying to do this for a Gravity Channel as below, but cannot seem to get it to work .

private function init():void {
        srv = new RemoteObject("myService");
        srv.source = "myService";
        srv.destination="GravityService";
        srv.channelSet = new ChannelSet();
        srv.channelSet.addChannel(new GravityChannel("gravityamf",
            "http://{server.name}:{server.port}/myapp/gravityamf/amf"));

I am then trying to create a Consumer as follows:

        var consumer : Consumer = new Consumer();
        consumer.destination = "GravityService";
        consumer.subscribe();

But when I do so I get the following error:

MessagingError message='Destination 'GravityService' either does not exist or the destination has no channels defined (and the application does not define any default channels.)'

When I add in the additional compiler option -services path/to/services-config.xml, my Consumer subscribes without problem and Gravity works fine.

I am able to create AMF services programmatically without problem using almost identical code (by adding an AMFChannel rather than a GravityChannel). Can someone please tell me what I'm doing wrong.

Thanks in advance!

Here are the relevant bits from my services-config.xml file :

        <channel-definition
                id="gravityamf"
                class="org.granite.gravity.channels.GravityChannel">
            <endpoint
                    uri="http://myServer:8080/myapp/gravityamf/amf"
                    class="flex.messaging.endpoints.AMFEndpoint"/>
        </channel-definition>

       <services>
        <service id="messaging-service"
                 class="flex.messaging.services.MessagingService"
                 messageTypes="flex.messaging.messages.AsyncMessage">
            <adapters>
                <adapter-definition id="jms"
                                    class="org.granite.gravity.adapters.JMSServiceAdapter" default="true"/>

            </adapters>

            <destination id="GravityService">
                <channels>
                    <channel ref="gravityamf"/>
                </channels>
                <properties>
                    <jms>
                        <destination-type>Topic</destination-type>
                        <message-type>javax.jms.TextMessage</message-type>
                        <connection-factory>ConnectionFactory</connection-factory>
                        <destination-jndi-name>topic/GravityTopic</destination-jndi-name>
                        <destination-name>GravityTopic</destination-name>
                        <acknowledge-mode>AUTO_ACKNOWLEDGE</acknowledge-mode>
                        <transacted-sessions>false</transacted-sessions>
                    </jms>
                </properties>
                <adapter ref="jms" />
            </destination>
        </service>
    </services>

[Murray Furtado]

Ok, so made some progress on this, thanks to an email from Franck Wolff. He suggested the following:

private function init():void {
        var consumer : Consumer = new Consumer();
        consumer.destination = "GravityService";
        consumer.channelSet = new ChannelSet();
         consumer.channelSet.addChannel(new GravityChannel("gravityamf",

            "http://{server.name}:{server.port}/myapp/gravityamf/amf"));

        consumer.subscribe();

}

So I made this change, but this doesn't seem to fully work. Here is the trace I get:

 

[trace] 13:30:07.323 [INFO] org.granite.gravity.Consumer '180454AF-EE56-AE70-7964-7DB1585B4712' org.granite.gravity.Consumer set destination to 'GravityService'.

[trace] 13:30:07.323 [INFO] mx.messaging.Channel 'gravityamf' channel endpoint set to http://LG007849:8080/indigo-server-war/gravityamf/amf

[trace] 13:30:07.760 [INFO] mx.messaging.Channel 'gravityamf' channel is connected.
[trace] 13:30:07.776 [DEBUG] mx.messaging.Channel 'gravityamf' channel sending message:
[trace] (mx.messaging.messages::CommandMessage)
[trace]   body=(Object)#0
[trace]   clientId=(null)
[trace]   correlationId=""
[trace]   destination="GravityService"
[trace]   headers=(Object)#0
[trace]   messageId="1C29A777-D1AA-1DCC-1405-7DB15A105C13"
[trace]   operation="subscribe"
[trace]   timeToLive=0
[trace]   timestamp=1363613407323
[trace] 13:30:07.776 [INFO] org.granite.gravity.Consumer '180454AF-EE56-AE70-7964-7DB1585B4712' org.granite.gravity.Consumer connected.
[trace] 13:30:07.838 [ERROR] org.granite.gravity.Consumer '180454AF-EE56-AE70-7964-7DB1585B4712' org.granite.gravity.Consumer fault for '1C29A777-D1AA-1DCC-1405-7DB15A105C13'.

 

Compare this to the trace when I add in the -services path/to/services-config.xml compile option, where the bold trace statements are also printed:

 

 

[trace] 13:25:58.219 [INFO] org.granite.gravity.Consumer 'D6410CB2-42AB-B073-4BBD-7DAD8B4BA58B' org.granite.gravity.Consumer set destination to 'GravityService'.
[trace] 13:26:01.234 [INFO] mx.messaging.Channel 'gravityamf' channel endpoint set to http://LG007849:8080/indigo-server-war/gravityamf/amf
[trace] 13:26:01.234 [INFO] mx.messaging.Channel 'gravityamf' channel settings are:
[trace] <channel id="gravityamf" type="org.granite.gravity.channels.GravityChannel">
[trace]   <endpoint uri="http://LG007849:8080/indigo-server-war/gravityamf/amf"/>
[trace]   <properties/>
[trace] </channel>
[trace] 13:26:01.297 [INFO] mx.messaging.Channel 'gravityamf' channel is connected.
[trace] 13:26:01.297 [DEBUG] mx.messaging.Channel 'gravityamf' channel sending message:
[trace] (mx.messaging.messages::CommandMessage)
[trace]   body=(Object)#0
[trace]   clientId=(null)
[trace]   correlationId=""
[trace]   destination="GravityService"
[trace]   headers=(Object)#0
[trace]   messageId="E2D73259-C1D3-CAFB-C433-7DAD9751B56D"
[trace]   operation="subscribe"
[trace]   timeToLive=0
[trace]   timestamp=1363613158219
[trace] 13:26:01.313 [INFO] org.granite.gravity.Consumer 'D6410CB2-42AB-B073-4BBD-7DAD8B4BA58B' org.granite.gravity.Consumer connected.

 

It would seem the xml isn't gernerated when configuring programmatically. There must be another step which needs taking to do this. Anyone have any ideas?

[alex fernandez]

Hi, I know it's been so much time, but did you manage to do it? Any luck with it??

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[Mike Rudko]

Alex;

Call me. 

313-220-6453.  

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