spring integration + cron + quartz in cluster?

Question

I have a spring integration flow triggered by the cron expression like follows:

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Answer 1

Here's one way...

Set the auto-startup attribute on the inbound-adapter to false.

Create a custom trigger that only fires once, immediately...

public static class FireOnceTrigger implements Trigger {

    boolean done;

    public Date nextExecutionTime(TriggerContext triggerContext) {
        if (done) {
            return null;
        }
        done = true;
        return new Date();
    }

    public void reset() {
        done = false;
    }
}

In your quartz job, get a reference to the trigger and the SourcePollingChannelAdapter.

When the quartz trigger fires, have the quartz job

1. adapter.stop()
2. trigger.reset()
3. adapter.start()