Hi,
sorry, my last reply did accidentally not go to the mailing-list.
I am interested how different apps in ryu can (an should) work
together.
How can an app discover which other apps are running?
I guess the apps could communicate using the event system.
Are there facilities for inter-app communications in place or
should this be implemented for each app separately?
Best regards
Jeremias
2013/1/21 Isaku Yamahata <[email protected]>
> On Fri, Jan 18, 2013 at 10:24:32AM +0100, Jeremias Blendin wrote:
> > Hi,
> >
> > there is a repository on github that includes the topology patches:
> > https://github.com/zoomis/ryu/tree/topology
>
> Wow. I didn't know that.
>
>
> > The patches are adapted to the latest version of Ryu, I have not
> > yet tried if it works though.
> >
> > I second the Cans request for more documentation :)
>
> What kind of documentation do you want? API reference?
> Recently I've posted some patches for documentation. Reviewing them is very
> appreciated.
>
>
> > Best regards
> >
> > Jeremias
> >
> > 2013/1/18 can. <[email protected]>
> >
> > Hello,
> >
> > I reverted the master branch of github to an old version(before
> May.31
> > 2012) and applied your 13 patches, then the topology discovery
> component
> > seemed working.
> >
> > Now I want to make the component work in the latest version, because
> I need
> > the openflow IPv6 support from ryu. Though ryu code is pretty clean,
> I'm
> > new to this project and need some help.
> >
> > 1. From my experience with ryu, the old version(version before
> May.31 2012)
> > requires a class to contain a _CONTEXTS. I think there might be
> other
> > differences in writing an app between the old and the latest
> version. So as
> > you can recall, could you give me a list of such changes?
>
> "git log" and "git annotate" are your friend. Sorry for no such
> documentation.
>
>
> > 2. I can see that you changed 13 files. Some of their functions can
> be
> > easily determined from their names. e.g. app/discovery.py(the main
> app),
> > app/rest_discovery.py(rest api for topology discovery),
> lib/lldp.py(pack
> > and unpack lldp). But other files are more difficult to understand as
> > there're no per-file-comments included and no available documents. I
> just
> > put them here to apply for an explanation:
> > bin/ryu-client, app/client.py: What do these client things do? I
> mean not
> > only in topology discovery, but also in ryu
> > app/cbench.py: no clue, related to benchmark test?
> > controller/* : I might also apply these changes to the latest
> version, so I
> > need to understand them. I think maybe this is related to the
> architecture
> > of ryu.
>
> Some of the patches are for refactoring Ryu internal structure as
> preparation for discovery. If the focus is only discovery, some of them are
> unnecessary
>
> ryu/app/client and bin/ryu-client are simple program to debug REST API.
> (Probably ryu/app/client.py should be in other directory.)
> If you issue http request directly with other means, they aren't necessary.
>
>
> > 3. What's the event mechanism of ryu? I see a lot of "unhandled
> event" when
> > run `ryu-manager --app_lists ryu.app.discovery.Discovery`. So how to
> raise
> > and handle an event in ryu?
>
> The warning can be ignored safely. Now its log level has been lowered
> to DEBUG. (It was useful for me to debug event dispatcher system itself.)
>
> thanks,
>
> >
> > I'd appreciate anyone who would help :)
> > And thanks in advance.
> >
> > --
> > Best regards,
> > Can Zhang
> >
> >
> >
> > Sent with Sparrow (http://www.sparrowmailapp.com/?sig)
> >
> >
> > On 2013年1月18日Friday at 上午9:22, can. wrote:
> >
> > > OK, I'll try.
> > > Thanks.
> > >
> > >
> > > --
> > > Best regards,
> > > Can Zhang
> > >
> > >
> > >
> > > Sent with Sparrow (http://www.sparrowmailapp.com/?sig)
> > >
> > >
> > > On 2013年1月18日Friday at 上午9:16, Isaku Yamahata wrote:
> > >
> > > > Oops sorry, please follow the thread of the mail.
> > > >
> > > > http://thread.gmane.org/gmane.network.ryu.devel/467
> > > > The 13 patches will be find.
> > > >
> > > > thanks,
> > > >
> > > > On Fri, Jan 18, 2013 at 09:14:02AM +0800, can. wrote:
> > > > > Thanks Isaku.
> > > > > But your link is a summary of the component. Where can I get
> the
> > code?
> > > > >
> > > > > --
> > > > > Best regards,
> > > > > Can Zhang
> > > > >
> > > > >
> > > > >
> > > > > Sent with Sparrow (http://www.sparrowmailapp.com/?sig)
> > > > >
> > > > >
> > > > > On 2013年1月18日Friday at 上午8:38, Isaku Yamahata wrote:
> > > > >
> > > > > > Hi.
> > > > > >
> > > > > > The latest patch is v4 and available at
> > > > > > http://article.gmane.org/gmane.network.ryu.devel/467
> > > > > >
> > > > > > It hasn't been merged into the upstream Ryu yet.
> > > > > > It's a bit outdated, so it needs to be updated and rebased.
> > > > > > The updated patches will be appreciated.
> > > > > >
> > > > > > thanks,
> > > > > >
> > > > > >
> > > > > > On Thu, Jan 17, 2013 at 12:01:48PM +0800, can. wrote:
> > > > > > > Hi there,
> > > > > > >
> > > > > > > I downloaded and installed ryu from github, but I cannot
> find the
> > topology discovery components I expected. So please tell me how to
> get the
> > code and documents.
> > > > > > >
> > > > > > >
> > > > > > > --
> > > > > > > Best regards,
> > > > > > > Can Zhang
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > >
> >
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> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > > --
> > > > > > yamahata
> > > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > --
> > > > yamahata
> > >
> >
> >
> >
> >
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> --
> yamahata
>
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