Hi Dustin
I agree with the concept you described but as far as I understand it is not 
currently supported in Neutron.
So a driver should be fully compatible with the interface it implements.

Avishay

From: Dustin Lundquist [mailto:dus...@null-ptr.net]
Sent: Tuesday, June 24, 2014 5:41 PM
To: OpenStack Development Mailing List (not for usage questions)
Subject: Re: [openstack-dev] [Neutron][LBaaS] Layer7 Switching - L7 Rule - 
comapre_type values

I think the API should provide an richly featured interface, and individual 
drivers should indicate if they support the provided configuration. For example 
there is a spec for a Linux LVS LBaaS driver, this driver would not support TLS 
termination or any layer 7 features, but would still be valuable for some 
deployments. The user experience of such a solution could be improved if the 
driver to propagate up a message specifically identifying the unsupported 
feature.


-Dustin

On Tue, Jun 24, 2014 at 4:28 AM, Avishay Balderman 
<avish...@radware.com<mailto:avish...@radware.com>> wrote:
Hi
One of L7 Rule attributes is ‘compare_type’.
This field is the match operator that the rule should activate against the 
value found in the request.
Below is list of the possible values:
- Regexp
- StartsWith
- EndsWith
- Contains
- EqualTo (*)
- GreaterThan (*)
- LessThan (*)

The last 3 operators (*) in the list are used in numerical matches.
Radware load balancing backend does not support those operators   “out of the 
box” and a significant development effort should be done in order to support it.
We are afraid to miss the Junu timeframe if we will have to focus in supporting 
the numerical operators.
Therefore we ask to support the non-numerical operators for Junu and add the 
numerical operators support post Junu.

See https://review.openstack.org/#/c/99709/4/specs/juno/lbaas-l7-rules.rst

Thanks
Avishay

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