Claus Ibsen created CAMEL-24885:
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Summary: camel-core - Simple: a resource: text with a function but
no scheme ends in a StackOverflowError
Key: CAMEL-24885
URL: https://issues.apache.org/jira/browse/CAMEL-24885
Project: Camel
Issue Type: Bug
Components: camel-core
Affects Versions: 4.22.0
Reporter: Claus Ibsen
Fix For: 4.23.0
A Simple expression whose text starts with {{resource:}} and contains a
function, but names no scheme, ends in a StackOverflowError at evaluation:
{code}
- setBody:
simple: "resource:templates/${header.type}.json"
{code}
{noformat}
java.lang.StackOverflowError
at
org.apache.camel.support.ScriptHelper.resolveOptionalExternalScript(ScriptHelper.java:77)
at
org.apache.camel.language.simple.SimpleLanguage$SimpleExpression.evaluate(SimpleLanguage.java:264)
at
org.apache.camel.language.simple.SimpleLanguage$SimpleExpression.evaluate(SimpleLanguage.java:267)
... (repeats)
{noformat}
{{LanguageSupport.isDynamicResource}} only checks the {{resource:}} prefix and
a function, so {{SimpleLanguage.createExpression}} returns the lazy
{{SimpleExpression}}; at evaluation
{{ScriptHelper.resolveOptionalExternalScript}} requires a scheme
({{hasExternalScript}}) and returns the text as it is, {{createExpression}} is
called with the same text and returns the lazy expression again, without end.
Fix: {{isDynamicResource}} uses the same test as the loader
({{ScriptHelper.hasExternalScript}}) so a scheme-less {{resource:}} text is a
plain expression, as it is without a function. Found while testing CAMEL-24884.
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