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Add signaling of succesful initialization of plugins to NetControl.

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This does not really have many user-facing changes. The one big change
is that users now should initialize plugins in the

NetControl::init()

event instead of bro_init.

Once all plugins finished initializing and the NetControl framework
starts operations, the NetControl::init_done() event is raised.

Rules that are sent to NetControl before the plugins have finished
initializing are ignored - this is important when several plugins that
require external connections have to be initialized at the beginning.
Without this delay, rules could end up at the wrong plugin.
This commit is contained in:
Johanna Amann 2016-03-08 14:49:22 -08:00
parent d9459fc59a
commit 42e4072673
31 changed files with 371 additions and 113 deletions
Download patch file Download diff file Expand all files Collapse all files

18
scripts/base/frameworks/openflow/plugins/broker.bro
View file

@ -36,6 +36,8 @@ export {
global broker_flow_clear: event(name: string, dpid: count);
}
global broker_peers: table[port, string] of Controller;
function broker_describe(state: ControllerState): string
{
return fmt("Broker-%s:%d-%d", state$broker_host, state$broker_port, state$broker_dpid);
@ -62,6 +64,17 @@ function broker_init(state: OpenFlow::ControllerState)
BrokerComm::subscribe_to_events(state$broker_topic); # openflow success and failure events are directly sent back via the other plugin via broker.
}
event BrokerComm::outgoing_connection_established(peer_address: string, peer_port: port, peer_name: string)
{
if ( [peer_port, peer_address] !in broker_peers )
# ok, this one was none of ours...
return;
local p = broker_peers[peer_port, peer_address];
controller_init_done(p);
delete broker_peers[peer_port, peer_address];
}
# broker controller constructor
function broker_new(name: string, host: addr, host_port: port, topic: string, dpid: count): OpenFlow::Controller
{
@ -70,6 +83,11 @@ function broker_new(name: string, host: addr, host_port: port, topic: string, dp
register_controller(OpenFlow::BROKER, name, c);
if ( [host_port, cat(host)] in broker_peers )
Reporter::warning(fmt("Peer %s:%s was added to NetControl acld plugin twice.", host, host_port));
else
broker_peers[host_port, cat(host)] = c;
return c;
}