Create new `Manual` trigger annotation about dropwizard-sundial

[Gaudon]

Was this ever added? I presume to have a job ready to fire but be triggered externally by another web service for example.

[timmolter]

Not yet, sorry. You could try programmatically creating a SimpleTrigger with repeat set to -1, which will fire only once.

[Gaudon]

Yeah it would be a very useful feature to have.. in the case of scaling infrastructures I would like to avoid having 'n' number of instances running the same jobs in parallel / at all. Instead, I'd like to have an external trigger hit the web api to launch the job on a single instance that may be passed the request through something like a router / load balancer.

[timmolter]

In case you didn't see it and it's useful, if you set concurrency = false, then only one instance of the job will run.

[Gaudon]

I did see that setting, but in this case the same source / compiled code is deployed on additional scaling instances without any knowledge of one another (from the code's perspective). Considering this, I don't believe the concurrency feature is applicable to my use case.

I'm thinking of the case where a front end load balancer is serving X number of servers, all running the same code, which all contain the same sundial jobs. Externally a job request comes in (with a token) through the load balancer and is handed off to any single instance (usually the one with the least load) with instructions / credentials to execute a given job (such as a maintenance routine) on a common database between all instances.

[timmolter]

you could try quartz, as it's been designed to run across multiple machines. the job statuses are coordinated via a central DB.

[Gaudon]

I've heard of Quartz, but Sundial just seemed "better" hah. But with that being said I'll look into it and see if it fits my use case any better.

Cheers.