topic Re: Deployment Listener in Alfresco Archive

Deployment Listener

jcharnet — Wed, 31 Aug 2011 12:41:05 GMT

Does Acitiviti have any support for a deployment listener ?I want to be able to get notified when a deployment is taken place, so that I can retrieve some information from the ACT_RE_PROCDEF table.In my Application, we needed to make some relationships with our tables and activiti's tables. Of cours

Re: Deployment Listener

frederikherema1 — Wed, 31 Aug 2011 12:52:28 GMT

You can't specifically listen to deployment but you can, however, use a BPMNParseListener (search the forum, I remember a post where I explain how to hoot it in) which will be called when a bmpn20.xml file is parsed. The parsing happens when a NEW process is deployed, but also when the a process-definition is loaded that was not in the cache (in normal circumstances, this is only once while the engine is running).

I guess you can leverage this concept, and possibly check if the version you're about to parse matches your own domain-model bean that matches the PROC_DEF_

Re: Deployment Listener

jcharnet — Wed, 31 Aug 2011 13:53:26 GMT

Thanks for the reply.
I'm trying it out, but it seems that when my listener is being called the ProcessDefinition object, has a null id attribute.
Is this normal ?

Inspecting the ProcessElement object, I am able to get the ID, but this ID will not match the column ID_ in the ACT_RE_PROCDEF table, because in the table it has two numbers after the id name. One I beleive is the version, the other I'm not quite sure what it is !
Ex:
If I define in my workflow an id = "TestWorkflowConditionalLoop", in the ID_ column of ACT_RE_PROCDEF I would have something like this:
"TestWorkflowConditionalLoop:1:4431". Correct ?

This is what I need to map on my side.

Thanks

Re: Deployment Listener

frederikherema1 — Wed, 31 Aug 2011 14:12:08 GMT

The id value in the XML-element is actually the "key" in the process-definition bean. So use the "ProcessDefinitionEntity processDefinition" passed in the method instead, this is already populated with the values from the XML-element. The XML-element is only passed to do additional parsing, not done by default BPMN parsing on our side…

Re: Deployment Listener

jcharnet — Wed, 31 Aug 2011 14:29:16 GMT

I tried using the ProcessDefinitionEntity, but the id atribute is null (processDefinition.getId()).

Re: Deployment Listener

frederikherema1 — Wed, 31 Aug 2011 14:38:57 GMT

I see… is this for a new process, or is the ID also null for existing processes? AFAIK, the ID is assigned after the entity has been created in case of a new process/deployment. Makes sense that the ID is null there, using the parseListener approach.

Re: Deployment Listener

jcharnet — Wed, 31 Aug 2011 15:27:48 GMT

It is for a new process. I did not try it for an existing process. For my case, I would need to use it for new processes.
Another thing I tried, was to query ACT_RE_PROCDEF with createTablePageQuery().tableName("act_re_procdef"). It this is done in the ParseListener, my process is still not in the database.

Any other idea, for what I need to do ?

Thanks

Re: Deployment Listener

jcharnet — Thu, 01 Sep 2011 19:13:06 GMT

I've managed to get this working without any listener (not using ParseListener).
After I have deployed the xml, I query the ACT_RE_PROCDEF finding the newly created DeploymentId, and I get the latest version of the xml.

This seems to be working for me.

Thanks for all the help !

Sincerely,

John

Re: Deployment Listener

ytsejammer — Wed, 26 Sep 2012 14:15:07 GMT

Hi,

Have there been any new features added to the Activiti engine to enable listeners for new process definitions being deployed/undeployed?

Thanks,

Carlos

Re: Deployment Listener

ronald_van_kuij — Wed, 26 Sep 2012 15:53:32 GMT

Just create some code that does the deployement… In that code you can do whatever you want… much cleaner I think