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https://issues.apache.org/activemq/browse/CAMEL-1048?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=54992#action_54992
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Claus Ibsen commented on CAMEL-1048:
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And how should the Java DSL syntax be?
We could have requires prelude the from.
{code}
require().el("${broker2.queueSize('AnotherQueue') == 0")
.from("broker1:MyQueue").to("broker2:AnotherQueue");
{code}
> allow routes to easily be enabled/disabled based on an external predicate
> such as queue size
> --------------------------------------------------------------------------------------------
>
> Key: CAMEL-1048
> URL: https://issues.apache.org/activemq/browse/CAMEL-1048
> Project: Apache Camel
> Issue Type: New Feature
> Reporter: James Strachan
> Fix For: 2.2.0
>
>
> For example we may want to do this route...
> {code}
> <route>
> <requires>
> <el>${broker2.queueSize('AnotherQueue') == 0}</el>
> </requires>
> <from uri="broker1:MyQueue"/>
> <to uri="broker2:AnotherQueue"/>
> </route>
> {code}
> i.e. only implement a specific route while some predicate is true (e.g. only
> route while a condition is met; disable when its not met).
> Maybe we need to allow endpoints to define if they are ready yet? e.g. only
> send to a certain queue if its got capacity?
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