Bartosz Popiela created CAMEL-22772:
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Summary: Freemarker shared variables not respected when using
dynamic templates
Key: CAMEL-22772
URL: https://issues.apache.org/jira/browse/CAMEL-22772
Project: Camel
Issue Type: Bug
Components: camel-freemarker
Affects Versions: 4.16.0
Reporter: Bartosz Popiela
I have a ComponentCustomizer which provides a custom Freemarker method:
{code:java}
@BindToRegistry(lazy=true)
public ComponentCustomizer freemarkerCustomizer(@BeanInject CacheService
cacheService) {
return new ComponentCustomizer() {
private final BeansWrapper beansWrapper =
new
BeansWrapperBuilder(freemarker.template.Configuration.DEFAULT_INCOMPATIBLE_IMPROVEMENTS).build();
@Override
public void configure(String name, Component component) {
try {
configure((FreemarkerComponent) component);
} catch (TemplateModelException e) {
throw new RuntimeException(e);
}
}
private void configure(FreemarkerComponent component) throws
TemplateModelException {
var configuration = component.getConfiguration();
configuration.setRecognizeStandardFileExtensions(true);
configuration.setRegisteredCustomOutputFormats(List.of(SafeJsonOutputFormat.INSTANCE));
configuration.setSharedVariable("customMethod", new
MyCustomMethod());
component.setConfiguration(configuration); // This is necessary
because FreemarkerComponent#getConfiguration returns a cloned object
}
@Override
public boolean isEnabled(String name, Component target) {
return target instanceof FreemarkerComponent;
}
};
} {code}
When passing a template with the CamelFreemarkerTemplate header,
FreemarkerEndpoint creates a new freemarker.template.Configuration which
doesn't provide my customMethod.
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