[CAMEL-10384] Shutdown broken when using Spring Boot

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.17.3
• Fix Version/s: 2.17.4, 2.18.1, 2.19.0
• Component/s: camel-spring-boot
• Estimated Complexity: Unknown
• Assignee: Claus Ibsen
• Reporter: Artur Markiewicz
• Created: 12/Oct/16 15:57
• Updated: 29/Oct/16 20:06
• Resolved: 29/Oct/16 20:06

Description

Camel doesn't shutdown properly in a Spring Boot environment. Calling the /shutdown endpoint causes Camel to hang-up after stopping the CamelContext. The reason for this is the count-down latch in the CamelSpringBootApplicationController. The overriden Main class modifies the latch in the Main class itself, not the one in CamelSpringBootApplicationController. As a result, the latch in CamelSpringBootApplicationController is waiting forever preventing a proper shutdown.

CamelSpringBootApplicationController .java

    public CamelSpringBootApplicationController(final ApplicationContext applicationContext, final CamelContext camelContext) {
        this.main = new Main() {
             
            ...

            @Override
            protected void doStop() throws Exception {
                LOG.debug("Controller is shutting down CamelContext");
                try {
                    super.doStop();
                } finally {
                    // Should be CamelSpringBootApplicationController.this.latch.countDown();
                    latch.countDown();
                }
            }
        };
    }