On 26. Aug 2009, at 16:39, Mathias Heyer wrote:
> as far as I know, the event-mechanism is able to forward render
> client-local events to the application node.
> Is there a similar way to send events from the application node to
> (all) the render clients?
Other than the solution described by Dan, no. We've been planning to
refactor the event system using a generic consumer/producer model for
some time, but nobody found the time to do it yet. These are my
thoughts so far:
Revamp Event Handling
Producer/Subscriber model
new: void Config::selectEvent( Event::Type type, net::NodeID node =
Node::ALL );
clearEvent( ... );
void Config::sendEvent( ConfigEvent event );
-> old: Sends event to appNode
-> new: Sends event to all subscribers
o appNode has default subscription to all events
Server subscribes to events for load-balancing
old: Channel::frameFinish sends all channel statistics in one batch
new: Channel select events if at least one listener is registered
Config (instead of channel) receives
at the end of each frame
for each channel
gather all events for channel
Channel::fireLoadData
Implementation
Each config instance has its own event mask for each subcriber
NodeID -> events
selectEvent( Event::Type type, net::NodeID node = Node::ALL );
(clearEvent)
if all nodes
send select packet to master
else
connect node
send select packet to node
_cmdSelectEvent()
(_cmdClearEvent)
if all nodes
assert is session master
for each node of session
send select packet to node
update own event list
else
update own event list
if no events left for subscriber, remove from map
void Config::sendEvent( ConfigEvent event )
for each subscriber
if event is selected
connect node
send event packet
Add tracking of nodes on session master:
during Node::_cmdMapSession, add slave nodes
during Node::_cmdUnmapSession, remove slave nodes
Cheers,
Stefan.
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