topic Re: Process stuck in timerEvent after rollback in Alfresco Archive

Process stuck in timerEvent after rollback

remibantos — Wed, 27 Apr 2016 18:03:20 GMT

Hello,After a disk space issue in my Activiti server, I've noticed that a lot of business processes transactions had been rollbacked.I use Activiti REST API, and i've added a timerEvent with a delay at the very begining of each business processes, to emulate an asynchronous call when starting active

Re: Process stuck in timerEvent after rollback

martin_grofcik — Mon, 02 May 2016 06:38:17 GMT

Hi,

Is there a way to make Activiti /runtime/executions REST API asynchronous?
[/quote
What do you mean?

What kind of signal could I send for this timerEvent?
e.g.
org.activiti.engine.ManagementService#executeJob or set job retries to >0.

Regards
Martin

Re: Process stuck in timerEvent after rollback

remibantos — Mon, 02 May 2016 16:51:12 GMT

Hi,

Currently, when I do a POST request to runtime/process-instances resource to start a process instance, I have to wait for Activiti to execute the instance to the first waiting "activity" such as an event gateway for sample, to finally get a HTTP 201 answer.
I would like instead that Activiti answers a 202 ACCEPTED HTTP code and create the process instance (and process it) asynchronously.
See the runtime/signals service which has such behavior.
Should I do a PR for that?

Thanks,
Rémi

Re: Process stuck in timerEvent after rollback

jbarrez — Tue, 03 May 2016 12:48:16 GMT

Simply make the first step of the process async and it will return after starting it.

But that will still give you a 201 and not a 202 of course.

Re: Process stuck in timerEvent after rollback

remibantos — Wed, 18 May 2016 14:38:56 GMT

I had this in mind indeed. However it seems like a workaround to what I would like to achieve.
I would prefer to use an asynchronous version of runtime/process-instances service so I would not have to modify all my business processes first steps. (not runtime/executions as in my first post)
So my understanding is that there's no such behavior in current version of Activiti "Process Instances" REST API.

Thanks

Re: Process stuck in timerEvent after rollback

jbarrez — Wed, 18 May 2016 17:03:23 GMT

Nope, it's not there at the moment. But it's something i'd like to add in the future for sure.

Re: Process stuck in timerEvent after rollback

martin_grofcik — Fri, 20 May 2016 07:07:51 GMT

Hi remibantos,

another possibility is to hook into process parsing and make first steps of all processes async by default.

Regards
Martin

Re: Process stuck in timerEvent after rollback

remibantos — Fri, 03 Jun 2016 09:20:36 GMT

Hi Martin,

Thanks, this is what I do know, (waiting for someone to do a PR for an async REST api) but I had a lot of issues with enabling of async continuations in my BP.
(See this post I just did: https://forums.activiti.org/comment/35378#comment-35378)