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75 lines
2.3 KiB
Text
75 lines
2.3 KiB
Text
@load base/frameworks/openflow
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@load base/frameworks/broker
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module OpenFlow;
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export {
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redef enum Plugin += {
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BROKER,
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};
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## Broker controller constructor.
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##
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## host: Controller ip.
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##
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## host_port: Controller listen port.
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##
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## topic: broker topic to send messages to.
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##
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## dpid: OpenFlow switch datapath id.
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##
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## Returns: OpenFlow::Controller record
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global broker_new: function(name: string, host: addr, host_port: port, topic: string, dpid: count): OpenFlow::Controller;
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redef record ControllerState += {
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## Controller ip.
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broker_host: addr &optional;
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## Controller listen port.
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broker_port: port &optional;
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## OpenFlow switch datapath id.
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broker_dpid: count &optional;
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## Topic to sent events for this controller to
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broker_topic: string &optional;
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};
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global broker_flow_mod: event(dpid: count, match: ofp_match, flow_mod: ofp_flow_mod);
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global broker_flow_clear: event(dpid: count);
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}
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function broker_describe(state: ControllerState): string
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{
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return fmt("Broker Plugin - %s:%d - DPID: %d", state$broker_host, state$broker_port, state$broker_dpid);
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}
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function broker_flow_mod_fun(state: ControllerState, match: ofp_match, flow_mod: OpenFlow::ofp_flow_mod): bool
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{
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BrokerComm::event(state$broker_topic, BrokerComm::event_args(broker_flow_mod, state$broker_dpid, match, flow_mod));
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return T;
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}
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function broker_flow_clear_fun(state: OpenFlow::ControllerState): bool
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{
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BrokerComm::event(state$broker_topic, BrokerComm::event_args(broker_flow_clear, state$broker_dpid));
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return T;
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}
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function broker_init(state: OpenFlow::ControllerState)
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{
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BrokerComm::enable();
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BrokerComm::connect(cat(state$broker_host), state$broker_port, 1sec);
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BrokerComm::subscribe_to_events(state$broker_topic); # openflow success and failure events are directly sent back via the other plugin via broker.
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}
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# broker controller constructor
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function broker_new(name: string, host: addr, host_port: port, topic: string, dpid: count): OpenFlow::Controller
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{
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local c = OpenFlow::Controller($state=OpenFlow::ControllerState($broker_host=host, $broker_port=host_port, $broker_dpid=dpid, $broker_topic=topic),
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$flow_mod=broker_flow_mod_fun, $flow_clear=broker_flow_clear_fun, $describe=broker_describe, $supports_flow_removed=T, $init=broker_init);
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register_controller(OpenFlow::BROKER, name, c);
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return c;
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}
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