topic Re: Re-engineering a legacy state machine with built in rules ... in Alfresco Archive

Re-engineering a legacy state machine with built in rules ...

rkarnam — Sat, 21 Jun 2014 04:00:42 GMT

Hi, I have prototyped a simple app with a groovy script, a RESTService call using Service Task and mail task to send the user status. This is a prototype to propose using Activiti BPM to replace the legacy system. This legacy system can have a campaign similar to a workflow. This campaign can execut

Re: Re-engineering a legacy state machine with built in rules ...

martin_grofcik — Mon, 23 Jun 2014 06:39:19 GMT

Hi,

will each customers workflow state be saved.

If you will execute process instance for each customer, yes. May be another approach could be consider too. (e.g. one process instance - (campaign) can change state of 1000's of objects (customers).

Will all these millions of users be part of identity tables in activiti ?

It depends on your solution. How you will design processes.

Also I was looking for enterprise support for Activiti.

http://activiti.org/enterprise-support.html
Try to contact: activiti@edorasware.com

Regards
Martin

Re: Re-engineering a legacy state machine with built in rules ...

rkarnam — Wed, 23 Jul 2014 14:47:27 GMT

Thanks for your answers:

I have done a POC with activiti. Here are my technical questions.

1) We will have 1000's of marketing campaigns which is your workflow processes.
2) Each workflow process can panel 2 or 3 million customers out of 30 million AIM users
3) So my question is how the datastore is managed …will activiti support multiple instances of dbs with some RANGE or HASH or KEY partitioning based on guid or userId.
4) The state management for each of the customer can process a lot data. Does all the data get stored in the ACT_RU_VARIABLE table ? is there a compress algorithm being using to store variables in TEXT_VARCHAR and TEXT2_VARCHAR. How can we avoid that storage and instead always get the data ?

Re: Re-engineering a legacy state machine with built in rules ...

jbarrez — Fri, 25 Jul 2014 08:15:59 GMT

> will activiti support multiple instances of dbs with some RANGE or HASH or KEY partitioning based on guid or userId.

No, Activiti does not do that. You will need to manage that on the db level. Or on the application level and have multiple Activiti engines.

4) No, there is no compression being done. All process data will be in the ACT_RU_VARIABLE table.
To avoid that, use an external data storage, and only store references in the process.

Re: Re-engineering a legacy state machine with built in rules ...

rkarnam — Wed, 06 Aug 2014 18:28:59 GMT

Thanks Joram!

I have integrated with the profile service which is couchbase cluster. I get the profile information when the REST service is called. I inject that profile Object into the startProcessInstanceByKey call.
<java>
CpsResponse profileResponse = cpsService.getProfile((String) nameValuePairs.get("userId"));
nameValuePairs.put("profileObject", profileResponse);
ProcessInstance processInstance = runtimeService.startProcessInstanceByKey(
    processKey, nameValuePairs);
</java>
I also have a groovy script task. Which parses the data.
<javascript>
   <script>
    outrintln "validating order for name " + userId;
    def subs = profileObject.nameValuePairs.subs;

    subs.each{ k, v -> outrintln " Subs List size : ${v.size}";
       v.each { sub ->
          outrintln " Sub: ${sub.svuProdId}, ${sub.name}, ${sub.status}, ${sub.productClass}";
         }
      }
</javascript>
Here is my question if there is a timer event in it then it will get stored into the database. How can I avoid storing it into db. Can I declare the object as transient ?

Also is there a way to call this service again when the timer event triggers ? I am looking into execution listener event.

Any insights will be helpful.

Thanks

Raghav.