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From "Nerses Aznauryan (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CAMEL-6400) CamelContext fails to start using placeholder in "simple" in conjunction with BridgePropertyPlaceholder
Date Sun, 26 May 2013 22:48:19 GMT
Nerses Aznauryan created CAMEL-6400:
---------------------------------------

             Summary: CamelContext fails to start using placeholder in "simple" in conjunction
with BridgePropertyPlaceholder
                 Key: CAMEL-6400
                 URL: https://issues.apache.org/jira/browse/CAMEL-6400
             Project: Camel
          Issue Type: Bug
          Components: camel-spring
    Affects Versions: 2.11.0
            Reporter: Nerses Aznauryan


Recently after upgrading from 2.10.3 to 2.11.0 I have encountered the following bug.
The problematic part was looking like this: 
{code}
from("direct:start")
    .setHeader(Exchange.FILE_NAME, simple("{{file.rootdir}}/${in.header.CamelFileName}"))
    .to("mock:result");
{code} 
Camel was failing to start with the following exception

{code}
org.apache.camel.FailedToCreateRouteException: Failed to create route route1 at: >>>
SetHeader[CamelFileName, simple{Simple: {{file.rootdir}}/${in.header.CamelFileName}}] <<<
in route: Route(route1)[[From[direct:start]] -> [SetHeader[CamelFileNa... because of Could
not resolve placeholder 'in.header.CamelFileName' in string value "/root/dir/${in.header.CamelFileName}"
	at org.apache.camel.model.RouteDefinition.addRoutes(RouteDefinition.java:883)
	at org.apache.camel.model.RouteDefinition.addRoutes(RouteDefinition.java:176)
	at org.apache.camel.impl.DefaultCamelContext.startRoute(DefaultCamelContext.java:755)
	at org.apache.camel.impl.DefaultCamelContext.startRouteDefinitions(DefaultCamelContext.java:1857)
	at org.apache.camel.impl.DefaultCamelContext.addRouteDefinitions(DefaultCamelContext.java:692)
	at org.apache.camel.builder.RouteBuilder.populateRoutes(RouteBuilder.java:337)
	at org.apache.camel.builder.RouteBuilder.addRoutesToCamelContext(RouteBuilder.java:264)
	at org.apache.camel.impl.DefaultCamelContext.addRoutes(DefaultCamelContext.java:654)
	at org.apache.camel.ContextTestSupport.setUp(ContextTestSupport.java:115)
	at org.apache.camel.spring.SpringTestSupport.setUp(SpringTestSupport.java:54)
	at org.apache.camel.TestSupport.runBare(TestSupport.java:58)
	at org.junit.internal.runners.JUnit38ClassRunner.run(JUnit38ClassRunner.java:84)
	at org.junit.runner.JUnitCore.run(JUnitCore.java:160)
	at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:63)
Caused by: java.lang.IllegalArgumentException: Could not resolve placeholder 'in.header.CamelFileName'
in string value "/root/dir/${in.header.CamelFileName}"
	at org.springframework.util.PropertyPlaceholderHelper.parseStringValue(PropertyPlaceholderHelper.java:173)
	at org.springframework.util.PropertyPlaceholderHelper.replacePlaceholders(PropertyPlaceholderHelper.java:125)
	at org.apache.camel.spring.spi.BridgePropertyPlaceholderConfigurer.springResolvePlaceholders(BridgePropertyPlaceholderConfigurer.java:180)
	at org.apache.camel.spring.spi.BridgePropertyPlaceholderConfigurer.parseUri(BridgePropertyPlaceholderConfigurer.java:143)
	at org.apache.camel.component.properties.PropertiesComponent.parseUri(PropertiesComponent.java:161)
	at org.apache.camel.component.properties.PropertiesComponent.parseUri(PropertiesComponent.java:120)
	at org.apache.camel.impl.DefaultCamelContext.resolvePropertyPlaceholders(DefaultCamelContext.java:1100)
	at org.apache.camel.model.ProcessorDefinition.resolvePropertyPlaceholders(ProcessorDefinition.java:556)
	at org.apache.camel.model.ProcessorDefinition.makeProcessor(ProcessorDefinition.java:471)
	at org.apache.camel.model.ProcessorDefinition.addRoutes(ProcessorDefinition.java:197)
	at org.apache.camel.model.RouteDefinition.addRoutes(RouteDefinition.java:880)
	... 22 more
{code} 

I have created a small test to reproduce the bug, and thanks to git bisect I found the commit
that introduced this bug. It is commit ea4c0ab5 "CAMEL-6233: BridgePropertyPlaceholderConfigurer
does not support nested Spring properties". The problem is that it is trying to resolve the
whole simple with the property resolver but after resolving the spring property it treats
{{$&#123;in.header.CamelFileName&#125;}} as a spring placeholder and fails to find
it.
There is a workaround. If {{&#123;&#123;file.rootdir&#125;&#125;}} is replaced
by {{$&#123;properties:file.rootdir&#125;}} then Camel starts just fine.

The test to reproduce is attached.

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