[CAMEL-17048] Exchange header null after upgrading to 3.12 from 3.11.2 when using transacted

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 3.12.0
• Fix Version/s: 3.13.0
• Component/s: camel-core
• Estimated Complexity: Unknown
• Assignee: Claus Ibsen
• Reporter: Andre
• Created: 07/Oct/21 07:20
• Updated: 08/Oct/21 07:55
• Resolved: 08/Oct/21 07:53

Description

After upgrading camel from 3.11.2 to 3.12.0 I notice that a header I set in a processor is not being available "later on" anymore.

It looks as follows:

Route

from(source)
  .process(myprocessor::setHeader)
  ...
  .process(anotherprocessor)
  ..
  .to(target)
;

where myprocessor.setHeader does sth like

void setHeader(Exchange exchange) {
  exchange.getIn().setHeader("my-header", 1234);
}

and anotherprocessor wants to access this header, e.g.

@Override
void process(Exchange exchange) {
  ...
  Long value = exchange.getIn().getHeader("my-header", Long.class);
  if (value == null) { 
    throw ..
  }
}

While with 3.11.x this works fine it stopped with 3.12.0.