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https://issues.apache.org/jira/browse/UIMA-1288?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12698432#action_12698432
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Jerry Cwiklik edited comment on UIMA-1288 at 4/14/09 7:40 AM:
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Modified UIMA_Service to accept new (optional) command line argument
-brokerURL. The code sets a system property defaultBrokerURL to a value bound
to the new argument if the argument is provided. If the argument is not
provided, the defaultBrokerURL system property will be set to
tcp://localhost:61616. RunRemoteAsyncAE was also changed to support setting of
the defaultBrokerURL property to the value provided by a user in brokerURL
command line argument.
dd2spring needs to change to handle missing brokerURL property on the
inputQueue element in a deployment descriptor. If missing, dd2spring will add
brokerURL property and set its value to a placeholder ${defaultBrokerURL} as in
the following example:
<inputQueue endpoint="RoomNumberAnnotatorQueue"
brokerURL="${defaultBrokerURL}"/>
The placeholder value will be taken from a system property set by UIMA_Service
and RunRemoteAsyncAE.
The brokerURL property may be omitted from the top level input queue as well as
input queue of any of the delegates. dd2spring will only add the brokerURL
property if it is missing. If it is specified, dd2spring will not attempt to
override existing value.
was (Author: cwiklik):
Modified UIMA_Service to accept new (optional) command line argument
-brokerURL. The code sets a system property defaultBrokerURL to a value bound
to the new argument if the argument is provided. If the argument is not
provided, the defaultBrokerURL system property will be set to
tcp://localhost:61616. RunRemoteAsyncAE was also changed to support setting of
the defaultBrokerURL property to the value provided by a user in brokerURL
command line argument.
dd2spring needs to change to handle missing brokerURL property on the
inputQueue element in a deployment descriptor. If missing, dd2spring will add
brokerURL property and set its value to a placeholder ${defaultBrokerURL} as in
the following example:
<inputQueue endpoint="RoomNumberAnnotatorQueue"
brokerURL="${defaultBrokerURL}"/>
The placeholder value will be taken from a system property set by UIMA_Service
and RunRemoteAsyncAE.
> Need a Better Approach For Specifying UIMA AS Broker URL in Deployment
> Descriptor
> ---------------------------------------------------------------------------------
>
> Key: UIMA-1288
> URL: https://issues.apache.org/jira/browse/UIMA-1288
> Project: UIMA
> Issue Type: Improvement
> Components: Async Scaleout
> Reporter: Jerry Cwiklik
> Assignee: Marshall Schor
>
> Each UIMA AS deployment descriptor requires at least one Broker URL for the
> connection factory. Instead of hard coding the URL, perhaps a placeholder for
> it should be used. At runtime, the placeholder could be resolved to the
> actual URL by Spring resolver component. The value could come from either an
> external file or from an environment. The new approach should accommodate
> specifying more than one placeholder, since an aggregate may have delegates
> whose queues are managed by a different broker. The new approach would
> simplify deployment of UIMA AS services, especially during testing.
> A placeholder syntax could be inherited from Spring, where it looks like
> ${placeholder-name}.
> dd2spring would need to change to handle a placeholder notation in addition
> to supporting hard coded broker URL that we use now. A new bean must be added
> to the generated xml. It will be :
> <bean
> class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
> <property name="systemPropertiesModeName"
> value="SYSTEM_PROPERTIES_MODE_OVERRIDE"/>
> </bean>
>
> This bean is setup to resolve placeholders using system variables, like
> -Dplaceholder-name=placeholder-value
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