[CAMEL-15087] toD doesn't resolve ${headers} if they come from a propertyPlaceholders

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.1.0, 3.2.0, 3.3.0
• Fix Version/s: 3.4.0
• Component/s: camel-core
• Estimated Complexity: Unknown
• Assignee: Claus Ibsen
• Reporter: Andreu Font Bardolet
• Created: 19/May/20 09:28
• Updated: 22/May/20 18:34
• Resolved: 22/May/20 18:34

Description

From camel 3.1 and up, I have detected that <doD/> doesn't resolve variables in propertyPlaceholders.

For example:

if i have an etc/uri.properties with:

example=http://${headers.url}

 

And in camel Context xml:

 

...
<camelContext id="example" xmlns="http://camel.apache.org/schema/spring">

   <propertyPlaceholder id="myProperties" location="classpath:etc/uri.properties"/>

   <route id="test">
     <from uri="timer:hello?period=3000"/>

     <setHeader name="url"><constant>www.google.es</constant></setHeader>

     <log message="{{example}}"/>
     <!-- It logs: http://www.google.es/ -->

     <toD uri="example"/>
     <!-- It resolves:  http://${headers.url} instead of http://www.google.es/ -->
  </route>
 </camelContext>

 
 
But if i do a kind of a workarround like this, it works:

...
<camelContext id="example" xmlns="http://camel.apache.org/schema/spring">

   <propertyPlaceholder id="myProperties" location="classpath:etc/uri.properties"/>

   <route id="test">
     <from uri="timer:hello?period=3000"/>

     <setHeader name="url"><constant>www.google.es</constant></setHeader>

     <setHeader name="workarround"><simple>{{example}}</simple></setHeader>
     <toD uri="${headers.workarround}"/>
     <!-- It now resolves:  http://www.google.es -->
  </route>
 </camelContext>