Bug 535543 (RHQ-2227)

Summary:	Mavenize EMS
Product:	[Other] RHQ Project	Reporter:	Ian Springer <ian.springer>
Component:	Build System	Assignee:	RHQ Project Maintainer <rhq-maint>
Status:	CLOSED WONTFIX	QA Contact:	Mike Foley <mfoley>
Severity:	medium	Docs Contact:
Priority:	low
Version:	1.2	CC:	ccrouch, cwelton, jshaughn
Target Milestone:	---	Keywords:	FutureFeature, Task
Target Release:	---
Hardware:	All
OS:	All
URL:	http://jira.rhq-project.org/browse/RHQ-2227
Whiteboard:
Fixed In Version:		Doc Type:	Enhancement
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2014-05-06 20:33:12 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Ian Springer 2009-07-10 17:15:00 UTC

This will make it easier to use EMS in our Maven ecosystem. It will easier to publish new versions (including snapshot jars), and we'll be able to use a snapshot dep on EMS in between releases. It will also allow us to more easily build and publish sources and javadoc jars to the Maven repo.

Comment 1 Red Hat Bugzilla 2009-11-10 21:00:22 UTC

This bug was previously known as http://jira.rhq-project.org/browse/RHQ-2227

Comment 2 wes hayutin 2010-02-16 15:44:56 UTC

mass move off the qa triage list.  These are tasks for dev.

Comment 3 Joseph Marques 2010-11-17 17:48:19 UTC

Ian, now that we have Mazz's fancy new isolating/hiding classloader within the agent, what do you think of removing our dependency on EMS altogether?

Comment 4 Ian Springer 2010-11-24 16:51:11 UTC

I like the idea, because it would remove the external dependency and leverage our existing classloading framework. However, I'm guessing it would be 8-15 days of work (which would include lost of regression testing of the as4 and as5 plugins to make sure all the JMX-based availability checks, metrics, and operations still work), so it's hard to justify the effort for something that won't introduce any new functionality.

As for the original issue, I think Mavenizing EMS would take about 2-4 hours.

Comment 5 Joseph Marques 2010-11-24 21:00:25 UTC

To be clear, this shouldn't be a comparison between the amount of time it takes to mavenize some framework versus the time it takes to do something with or without that framework.

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Although it wouldn't introduce any new functionality, it would lower the maintenance burden (one less library that can have errors in it) while lowering heap and perm gen footprint.  As such, I think it's something that should eventually be the target we push towards.

As a proof of concept, we could create a feature branch and do the migration only for the JMX and JBossAS plugins, to see what effect that has on memory and performance profiles.