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It is definitely a bug in Horizon. The additional columns "Implementation",
"Component" and "Resource" are representative for a limited resource type
group only. Since Heat allows to specify a URL as a resource type, we
should not use these columns at all. "Type" column and filter will do just
the same trick.

Tatiana.

2016-08-17 1:22 GMT+03:00 Rob Cresswell <robert.cresswell at outlook.com>:

> This sounds like a bug on the Horizon side. There is/was a patch regarding
> a similar issue with LBaaS v2 resources too. It's likely just an incorrect
> assumption in the logic processing these names.
>
> Rob
>
> On 16 Aug 2016 11:03 p.m., "Zane Bitter" <zbitter at redhat.com> wrote:
>
>> On 16/08/16 17:43, Praveen Yalagandula wrote:
>> > Hi all,
>> > We have developed some heat resources for our custom API server. We
>> > followed the instructions in the development guide
>> > at http://docs.openstack.org/developer/heat/pluginguide.html and got
>> > everything working. However, the Horizon "Resource Types" panel is
>> > returning a 500 error with "TemplateSyntaxError: u'resource'" message.
>> >
>> > Upon further debugging, we found that the Horizon is expecting all Heat
>> > resource type names to be of form
>> > <implementation>::<component>::<resource>. However, we didn't see this
>> > requirement in the heat development documents. Some of our resource
>> > types have just two words (e.g., "Avi::Pool"). Heat itself didn't care
>> > about these names at all.
>>
>> Given that Heat has a REST API specifically for validating templates,
>> it's surprising that Horizon would implement its own, apparently
>> incorrect, validation.
>>
>> > Question: Is there a general consensus is to enforce
>> > the <implementation>::<component>::<resource> format for type names?
>>
>> No. We don't really care what you call them (although using OS:: or
>> AWS:: as a prefix for your own custom types would be very unwise). In
>> fact, Heat allows you to specify a URL of a template file as a resource
>> type, and it sounds like that might run afoul of the same restriction.
>>
>> > If so, can we please update the heat plugin guide to reflect this?
>> > If not, we can file it is as a bug in Horizon.
>>
>> +1 for bug in Horizon.
>>
>> - ZB
>>
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