Bug 863346

Summary:	Plug-in data directories are not preserved during agent auto-update
Product:	[Other] RHQ Project	Reporter:	Andreas Veithen <andreas.veithen>
Component:	Agent	Assignee:	RHQ Project Maintainer <rhq-maint>
Status:	CLOSED WONTFIX	QA Contact:	Mike Foley <mfoley>
Severity:	low	Docs Contact:
Priority:	unspecified
Version:	4.5	CC:	andreas.veithen, hrupp
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Hardware:	x86_64
OS:	Linux
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Fixed In Version:		Doc Type:	Bug Fix
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Clone Of:		Environment:
Last Closed:	2017-03-18 21:13:51 UTC	Type:	Bug
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Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Andreas Veithen 2012-10-05 07:50:36 UTC

According to the Javadoc of PluginContext#getDataDirectory(), the directory returned by that method (which is $RHQ_AGENT_HOME/data/<plug-in name>) is a "Directory where plugins can store persisted data that survives agent restarts".

The obvious expectation is that this remains true even during an auto-update of the agent. In fact, since the auto-update only changes the version of the plug-in container, but not the version of the plug-ins (at least not for custom plug-ins), there is no reason why the plug-in data directories would be reset.

However, the observed behavior during an auto-update (from 3.0.0 to 4.5.1) is that the data directories are moved together with the old agent installation (to $RHQ_AGENT_HOME-OLD) and not restored to the new agent installation.

Comment 1 Heiko W. Rupp 2013-07-01 10:29:02 UTC

Andreas,

after the agent has auto-updated, it will get new(er) plugin versions from the server which also has updated and is (at least for stock RHQ plugins) thus also having newer plugins.
Do I understand you correctly that your custom plugin is staying the same and thus expects to e.g. fetch temporary data from the data/ directory, which has gone?