Hi,
I am currently trying to implement scheduled jobs using DeltaSpike's
Scheduler module, and I really like how little boilerplate I need for
getting it up and running.
Our application runs on multiple nodes, but the tasks are very
inexpensive, run only once a day, and I don't need failover - if they
fail once, and succeed the day after its totally fine. Therefore I'd
like to avoid setting up Quartz in clustered mode. But I still want the
Jobs to only run once. So my idea was to restrict the execution of the
jobs to a single scheduler node.
So my question is: Is it possible to somehow hook into the Scheduler
module to say something like:
if (isSchedulerNode())
startScheduler();
else
doNothing();
It would be perfect if said isSchedulerNode() could be evaluated on
system startup (e.g. acquire a distributed lock) and would not rely on
static values (e.g. config files, environment variables, etc.).
I can see how this is a bad idea in general (no load-balancing, no
failover) and I do have some ideas on how I would implement that. But
for these jobs I just don't care about any of this, so I'd like to avoid
having to set up a whole lot of infrastructure around my application
just to see this working.
Is there a possibility to achieve this without patching
deltaspike-scheduler-module-impl?
Kind regards,
Juri
