[DTACLOUD-88] deltacloud-core should pass back better error messages from RHEV-M errors

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Component/s: Server
• Environment: Fedora-15, deltacloud-core-0.5.0-0.2.1317167702git.fc15.noarch (nightly)
• Assignee: David Lutterkort
• Reporter: Chris Lalancette
• Created: 07/Oct/11 18:52
• Updated: 07/Feb/12 21:01
• Resolved: 07/Feb/12 21:01

Description

When trying to run a RHEV-M action (lib/deltacloud/drivers/rhevm/rhevm_client.rb:vm_action()), the action may fail. If it does, deltacloud-core returns a pretty generic: Operation start failed.

However, we can do better. If an action fails, RHEV-M returns a piece of XML with detail, like:

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<action>
<status>
<state>failed</state>
</status>
<fault>
<reason>Nogah operation failed</reason>
<detail>[Cannot run VM. VM is not found.]</detail>
</fault>
</action>

We should parse that detail out and return it as part of the exception so that the client will have a better idea of what the problem is.