7:56 a.m.
----- Original Message -----
From: "Moti Asayag" <masayag(a)redhat.com>
To: "Martin Perina" <mperina(a)redhat.com>
Cc: engine-devel(a)ovirt.org
Sent: Tuesday, May 14, 2013 12:14:14 PM
Subject: Re: [Engine-devel] Engine config and device custom properties
Hi Martin,
By looking at the code - there seems no validator for the format provided
by the user for the UserDefinedVMProperties.
It seems that the engine will write an exception to log specifying the format
is invalid,
as the format is being validated during engine startup by
InitBackendServicesOnStartupBean.create() which invokes
VmPropertiesUtils.getInstance().init()
Therefore there is a need to validate the format in earlier stage, when
setting the values
for the properties via the engine-config.
1. Extend the engine-config value helpers with a new type:
DevicePropertiesValueHelper extends
org.ovirt.engine.core.config.entity.helper.ValueHelper
and also a compliant DevicePropertiesValueHelperTest
2. DevicePropertiesValueHelper.validate() should reuse the parsing logic of
the device properties
from VmPropertiesUtils.parseVMPropertiesRegex()
3. Define the value helper for you new property in
packaging/etc/engine-config/engine-config.properties:
CustomDeviceProperties.description="your description"
CustomDeviceProperties.type=DevicePropertiesValueHelper
You the new install-dev to easily test you changes.
Regards,
Moti
Moti gave a very good explanation.
Actually , the very first question should have been - would we like to have this
configurable via engine config?
Are we going to defined a predefine set (i.e - in case of SAPAgent af predefined vm custom
properties) or not.
I actually now think we should go for this.
Martin, the new value helper will not be able to validate on a specific key=value pair -
the user will have to pass the entire string each time he changes this config value.
Moti - any comments here?
Anyway, this change can be done in parallel to Moti's work on custom device properties
from network side (he will fill relevant values manually in the vdc_options table).
Yair
----- Original Message -----
> From: "Martin Perina" <mperina(a)redhat.com>
> To: engine-devel(a)ovirt.org
> Sent: Tuesday, May 14, 2013 10:51:02 AM
> Subject: [Engine-devel] Engine config and device custom properties
>
> Hi,
>
> I'm working on a patch to support custom device properties in ovirt-engine.
> I would like that custom device properties format can be set using
> engine-config
> command in a similar way as UserDefinedVMProperties. What is needed to be
> done
> to support this?
>
> Thanks
>
> Martin
> _______________________________________________
> Engine-devel mailing list
> Engine-devel(a)ovirt.org
> http://lists.ovirt.org/mailman/listinfo/engine-devel
>
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