topic Re: How to implement restart/pause/resume in Activiti in Alfresco Archive

How to implement restart/pause/resume in Activiti

lxjchengcu — Fri, 23 Dec 2011 02:04:04 GMT

Since Activiti has started to support asynchronous messages since 5.8, so I have implemented a 'retry' function for Activiti, user could start/restart a process instance from given activity, i.e. if a process instance is suspended at a activity, user could call this API to enable the process instanc

Re: How to implement restart/pause/resume in Activiti

trademak — Fri, 23 Dec 2011 09:45:07 GMT

Hi,

Do you mean restart functionality when a job has failed to execute 3 times?
Or do you mean it in a more broader perspective? Can you please elaborate a bit more on the use cases you want to cover?

Best regards,

Re: How to implement restart/pause/resume in Activiti

lxjchengcu — Fri, 23 Dec 2011 12:44:41 GMT

Activiti does not use retry interceptor like jBPM, right? some Workflow engines like Shark have the restart functionality, when a process instance is suspended at an activity, user could use this functionality to restart the process from a given activity, for example:
here is a sample flow:
start -> A -> B -> C -> end
when process instance is suspended at B, user could use the 'restart' function to enable the process instance to re-run from A,

Re: How to implement restart/pause/resume in Activiti

lxjchengcu — Fri, 23 Dec 2011 12:53:59 GMT

Besides, I reviewed the source code, It seems that Activiti does not support pause/resume process instance, I think it should be a basic functionality of Workflow engine, but it is very easy to implement in Activiti, from my point of view, here are two ways:

1: update job.exception to 'Paused', so job executor will not process those jobs marked as 'paused'
2: add new status 'suspended' for execution and job objects

anyway, it is not a big problem.

Re: How to implement restart/pause/resume in Activiti

alexander1 — Tue, 14 Feb 2012 09:12:44 GMT

Dear lxjchengcu,
I'm very interested in retry function, are you still planning to share code?
Best Regards,
Alexander

Re: How to implement restart/pause/resume in Activiti

meyerd — Tue, 14 Feb 2012 10:51:19 GMT

http://jira.codehaus.org/browse/ACT-1074

Re: How to implement restart/pause/resume in Activiti

ovonel — Fri, 17 Feb 2012 08:59:38 GMT

I´m also very interested in this feature.
Hope to see it in the next release.