Hi David,

For defining "User Event", the following post may be helpful.
  
http://sourceforge.net/p/ryu/mailman/ryu-devel/thread/5694B058.7090004%40gmail.com/#msg34758419

Thanks,
Iwase


On 2016年01月10日 18:26, David Gabriel wrote:
> Dera Fujita and all,
> 
> Please tell me where is the suitable place to initiate my event.
> Please note that I am using ldap as data base.
> 
> Thanks in advance.
> Best regards
> 
> 2016-01-07 16:17 GMT+01:00 FUJITA Tomonori <[email protected] 
> <mailto:[email protected]>>:
> 
>     On Wed, 6 Jan 2016 03:26:09 -0800
>     David Gabriel <[email protected] <mailto:[email protected]>> 
> wrote:
> 
>     > I want to run an application that depends on:
>     > 1- openflow events (like simple switch app you provide in the tutorial) 
> and
>     > also
>     > 2- external events (provided by an external Data Base - DB).
>     > In fact, I have a python scirpt that periodacally check my data base to 
> get
>     > new modification. I am wondering how can I integrate it in my Ryu
>     > application in order to be updated from my data base and consequently
>     > change the behaviour of my ovs switch ?
>     > I want to run only one application (one source file) because there some
>     > variables to be shared and I want to know how to integrate my source 
> code
>     > (that gets the DB update) into my Ryu application (that is very closed 
> to
>     > simple_switch.py) ?
> 
>     I think that you need to access to the DB in an eventlet-compatible
>     way. Try Google with a keyword like "eventlet sql".
> 
> 
> 
> 
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