On Wed, 2013-12-11 at 08:19 +0100, Richard Cochran wrote:
> On Tue, Dec 10, 2013 at 08:53:27PM +0000, Keller, Jacob E wrote:
> >
> > I'm not too familiar with management.. is it possible for management
> > messages to come in via the network socket?
>
> Yes, but I think this special push information should only appear on
> the loacl UDS interface. Putting unsolicited messages on the network
> would go against the standard.
>
> The idea is to make life easier for local programs like phc2sys.
>
> > Create an array of things which can be pushed, then if the array
> > slot is not null, it's a linked list of all the requests so far?
> > (assuming correct that we want to support multiple clients
> > requesting) Then each request could be a store of the address that
> > requested that push notification? Linked list in this case would be
> > fairly cheap, and we wouldn't have to sort them. The hash enables
> > fast lookup of each push notification without having to scan a
> > single list for every push notification.
>
> First of all, we will not have that many local listeners, maybe just
> phc2sys and perhaps one or two others. So, we don't need to get too
> fancy.
>
> In uds.c, we can keep a list of {address, msg_bitmap} where the bit
> map has slots for the different management messages like "current data
> set", "parent data set", and so on.
>
> We will have to add hooks throughout the code that trigger when the
> program state changes in such a way as to change one of the possible
> data sets represented by msg_bitmap. The hook will simply send the
> needed message or messages.
>
> Then, the code uds.c will match the message type against each list
> entry and send it if it matches.
>
> Thanks,
> Richard
>
Sounds good :)
Regards,
Jake
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