Thanks for the response guys!
The link https://github.com/dimitri/prefixIt is returning 404....
Regarding the performance itself I am not worried since this select it is just for management and I don't expect having millions of rules.
The idea is just to have an easy way to have a picture of how the LCR will order and select the gateways based on a given prefix. The three LCR tables are not so easy to handle and manage from command line so my idea was to have a single SELECT or VIEW to return me all I need at once!
From what I could check, I think the select I sent pretty much translates what LCR module does internally, I am just trying to verify if it has some flaw, which could mislead me in the rules management.

Cheers,
Patrick Wakano


On 6 September 2017 at 00:32, Dmitry Sinina <dmitry.sinina@onat.edu.ua> wrote:
https://yeti-switch.org/demo.html


On 9/5/17 5:29 PM, Dmitry Sinina wrote:
And you can try our opensource LCR engine. We use kamailio as load balancer and SEMS as SBC.

On 9/5/17 3:02 AM, Patrick Wakano wrote:
Hello list,

Hope you all doing well!
I am trying to ease the management of LCR routing rules, since once we begin to have multiple prefixes, multiple GWs and so on, the visualization and management of the rules priorities becomes exponentially hard to do.
So first thing I am trying to achieve is an easy way of retrieving the rules in an ordered manner. I couldn't find any tool to do such thing and source code was not very friendly.... so I've come up with this Postgresql query that I think retrieves all rules in the same order I expect LCR to select the GWs.

SELECT lr.lcr_id, lr.prefix, lrt.priority, lg.gw_name, lg.ip_addr
FROM lcr_rule lr
JOIN lcr_rule_target lrt ON lrt.lcr_id = lr.lcr_id AND lrt.rule_id = lr.id <http://lr.id>
JOIN lcr_gw lg ON lg.lcr_id = lr.lcr_id AND lg.id <http://lg.id> = lrt.gw_id
WHERE lr.enabled = 1 AND lg.defunct = 0 AND lr.lcr_id = ID AND lr.prefix SIMILAR TO '(|PREFIX%)'
ORDER BY lr.lcr_id, LENGTH(lr.prefix) DESC, lrt.priority;

It is missing the weights calculation, but it is rather complex and I am not using it anyway.... Other than that does anyone did something similar to check if my query really matches what LCR engine does?

Thanks,
Patrick Wakano

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