ONOS-5182 Refactored SONA to cache network states
Change-Id: Ib316fa5fa5d36e9da370a1578ac55de4a8dd9b04
diff --git a/apps/openstacknetworking/src/main/java/org/onosproject/openstacknetworking/impl/OpenstackSwitchingHandler.java b/apps/openstacknetworking/src/main/java/org/onosproject/openstacknetworking/impl/OpenstackSwitchingHandler.java
new file mode 100644
index 0000000..50d9b37
--- /dev/null
+++ b/apps/openstacknetworking/src/main/java/org/onosproject/openstacknetworking/impl/OpenstackSwitchingHandler.java
@@ -0,0 +1,239 @@
+/*
+* Copyright 2016-present Open Networking Laboratory
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+package org.onosproject.openstacknetworking.impl;
+
+import com.google.common.base.Strings;
+import org.apache.felix.scr.annotations.Activate;
+import org.apache.felix.scr.annotations.Component;
+import org.apache.felix.scr.annotations.Deactivate;
+import org.apache.felix.scr.annotations.Reference;
+import org.apache.felix.scr.annotations.ReferenceCardinality;
+import org.onlab.packet.Ethernet;
+import org.onosproject.core.ApplicationId;
+import org.onosproject.core.CoreService;
+import org.onosproject.mastership.MastershipService;
+import org.onosproject.net.device.DeviceService;
+import org.onosproject.net.flow.DefaultTrafficSelector;
+import org.onosproject.net.flow.DefaultTrafficTreatment;
+import org.onosproject.net.flow.TrafficSelector;
+import org.onosproject.net.flow.TrafficTreatment;
+import org.onosproject.net.flowobjective.FlowObjectiveService;
+import org.onosproject.net.flowobjective.ForwardingObjective;
+import org.onosproject.openstacknetworking.api.InstancePort;
+import org.onosproject.openstacknetworking.api.InstancePortEvent;
+import org.onosproject.openstacknetworking.api.InstancePortListener;
+import org.onosproject.openstacknetworking.api.InstancePortService;
+import org.onosproject.openstacknetworking.api.OpenstackNetworkService;
+import org.onosproject.openstacknode.OpenstackNode;
+import org.onosproject.openstacknode.OpenstackNodeService;
+import org.openstack4j.model.network.Network;
+import org.slf4j.Logger;
+
+import java.util.concurrent.ExecutorService;
+
+import static java.util.concurrent.Executors.newSingleThreadExecutor;
+import static org.onlab.util.Tools.groupedThreads;
+import static org.onosproject.openstacknetworking.api.Constants.*;
+import static org.onosproject.openstacknetworking.impl.RulePopulatorUtil.buildExtension;
+import static org.slf4j.LoggerFactory.getLogger;
+
+
+/**
+ * Populates switching flow rules on OVS for the basic connectivity among the
+ * virtual instances in the same network.
+ */
+@Component(immediate = true)
+public final class OpenstackSwitchingHandler {
+
+ private final Logger log = getLogger(getClass());
+
+ private static final String ERR_SET_FLOWS = "Failed to set flows for %s: ";
+
+ @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+ protected CoreService coreService;
+
+ @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+ protected MastershipService mastershipService;
+
+ @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+ protected DeviceService deviceService;
+
+ @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+ protected FlowObjectiveService flowObjectiveService;
+
+ @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+ protected InstancePortService instancePortService;
+
+ @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+ protected OpenstackNetworkService osNetworkService;
+
+ @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+ protected OpenstackNodeService osNodeService;
+
+ private final ExecutorService eventExecutor = newSingleThreadExecutor(
+ groupedThreads(this.getClass().getSimpleName(), "event-handler"));
+ private final InstancePortListener instancePortListener = new InternalInstancePortListener();
+ private ApplicationId appId;
+
+ @Activate
+ protected void activate() {
+ appId = coreService.registerApplication(OPENSTACK_NETWORKING_APP_ID);
+ instancePortService.addListener(instancePortListener);
+
+ log.info("Started");
+ }
+
+ @Deactivate
+ protected void deactivate() {
+ instancePortService.removeListener(instancePortListener);
+ eventExecutor.shutdown();
+
+ log.info("Stopped");
+ }
+
+ private void setNetworkRules(InstancePort instPort, boolean install) {
+ setTunnelTagFlowRules(instPort, install);
+ setForwardingRules(instPort, install);
+ }
+
+ private void setForwardingRules(InstancePort instPort, boolean install) {
+ // switching rules for the instPorts in the same node
+ TrafficSelector selector = DefaultTrafficSelector.builder()
+ .matchEthType(Ethernet.TYPE_IPV4)
+ .matchIPDst(instPort.ipAddress().toIpPrefix())
+ .matchTunnelId(getVni(instPort))
+ .build();
+
+ TrafficTreatment treatment = DefaultTrafficTreatment.builder()
+ .setEthDst(instPort.macAddress())
+ .setOutput(instPort.portNumber())
+ .build();
+
+ RulePopulatorUtil.setRule(
+ flowObjectiveService,
+ appId,
+ instPort.deviceId(),
+ selector,
+ treatment,
+ ForwardingObjective.Flag.SPECIFIC,
+ PRIORITY_SWITCHING_RULE,
+ install);
+
+ // switching rules for the instPorts in the remote node
+ for (OpenstackNode osNode : osNodeService.completeNodes()) {
+ if (osNode.intBridge().equals(instPort.deviceId())) {
+ continue;
+ }
+
+ TrafficTreatment treatmentToRemote = DefaultTrafficTreatment.builder()
+ .extension(buildExtension(
+ deviceService,
+ osNode.intBridge(),
+ osNodeService.dataIp(instPort.deviceId()).get().getIp4Address()),
+ osNode.intBridge())
+ .setOutput(osNodeService.tunnelPort(osNode.intBridge()).get())
+ .build();
+
+ RulePopulatorUtil.setRule(
+ flowObjectiveService,
+ appId,
+ osNode.intBridge(),
+ selector,
+ treatmentToRemote,
+ ForwardingObjective.Flag.SPECIFIC,
+ PRIORITY_SWITCHING_RULE,
+ install);
+ }
+ }
+
+ private void setTunnelTagFlowRules(InstancePort instPort, boolean install) {
+ TrafficSelector selector = DefaultTrafficSelector.builder()
+ .matchEthType(Ethernet.TYPE_IPV4)
+ .matchInPort(instPort.portNumber())
+ .build();
+
+ TrafficTreatment treatment = DefaultTrafficTreatment.builder()
+ .setTunnelId(getVni(instPort))
+ .build();
+
+ RulePopulatorUtil.setRule(
+ flowObjectiveService,
+ appId,
+ instPort.deviceId(),
+ selector,
+ treatment,
+ ForwardingObjective.Flag.SPECIFIC,
+ PRIORITY_TUNNEL_TAG_RULE,
+ install);
+ }
+
+ private Long getVni(InstancePort instPort) {
+ Network osNet = osNetworkService.network(instPort.networkId());
+ if (osNet == null || Strings.isNullOrEmpty(osNet.getProviderSegID())) {
+ final String error = String.format(
+ ERR_SET_FLOWS + "Failed to get VNI for %s",
+ instPort, osNet.getName());
+ throw new IllegalStateException(error);
+ }
+ return Long.valueOf(osNet.getProviderSegID());
+ }
+
+ private class InternalInstancePortListener implements InstancePortListener {
+
+ @Override
+ public boolean isRelevant(InstancePortEvent event) {
+ InstancePort instPort = event.subject();
+ return mastershipService.isLocalMaster(instPort.deviceId());
+ }
+
+ @Override
+ public void event(InstancePortEvent event) {
+ InstancePort instPort = event.subject();
+ switch (event.type()) {
+ case OPENSTACK_INSTANCE_PORT_UPDATED:
+ case OPENSTACK_INSTANCE_PORT_DETECTED:
+ eventExecutor.execute(() -> {
+ log.info("Instance port detected MAC:{} IP:{}",
+ instPort.macAddress(),
+ instPort.ipAddress());
+ instPortDetected(event.subject());
+ });
+ break;
+ case OPENSTACK_INSTANCE_PORT_VANISHED:
+ eventExecutor.execute(() -> {
+ log.info("Instance port vanished MAC:{} IP:{}",
+ instPort.macAddress(),
+ instPort.ipAddress());
+ instPortRemoved(event.subject());
+ });
+ break;
+ default:
+ break;
+ }
+ }
+
+ private void instPortDetected(InstancePort instPort) {
+ setNetworkRules(instPort, true);
+ // TODO add something else if needed
+ }
+
+ private void instPortRemoved(InstancePort instPort) {
+ setNetworkRules(instPort, false);
+ // TODO add something else if needed
+ }
+ }
+}