How to use Google guice with Quartz in Play framework

[Tu Pham Phuong]

Hi,

Currently my Play application use Guice for Dependency Injection, Guice was great but I have no luck when integrate Quartz for schedule some task. Every classes called from Quartz Job with Guice injected return null. I guess that Play application context and Quart context not share Guice Injector instance. 

I don't have experience with this kind of problem. Can you give me some best pratices to resolve it ?

Thanks you so much !

[Dominik Dorn]

I'm not sure on how you integrated quartz, but when creating the quartz instance, you could inject the current application. 

from there on, you can get the injector manually (applicaiton.injector() ) and do injection as you wish.

Is there a specific reason why you're using Quartz? Since Akka is a fundamental part of Play (and has DI support in 2.4),

you could just use Akka to schedule repetitive tasks... 

Cheers,

Dominik

[Alexey Pismenskiy]

Here is a simple project - Play, Akka, Scala and Google Guice DI. When it starts it schedules a message and then when the actor receives a message it schedules  another message to itself after 5 seconds. 

We use a similar design in one of our applications that need to do some repetitive processes (like DB scans) every {Interval} seconds.

https://github.com/apismensky/hello-akka

[sachin walia]

Tu Pham,

Quartz is almost in the abandoned state. The triaging of bugs is almost minimal and so is the code check-in activity. I'd recommend against using that and I think if there is any need for scheduling then Akka would be a much better option.

[Erol Merdanović]

You can check https://github.com/enragedginger/akka-quartz-scheduler . I'm using it (with Play 2.2) and it works great.

As Dominik mentioned, either you inject all the you need when creating actors or inject the injector().