Refer to external bridge and gateway IP from k8s node store
Change-Id: I7dab97ead59e3746b67e6e3bedc3a2c6fea41bf1
diff --git a/apps/k8s-networking/app/src/main/java/org/onosproject/k8snetworking/impl/K8sNetworkHandler.java b/apps/k8s-networking/app/src/main/java/org/onosproject/k8snetworking/impl/K8sNetworkHandler.java
new file mode 100644
index 0000000..e311027
--- /dev/null
+++ b/apps/k8s-networking/app/src/main/java/org/onosproject/k8snetworking/impl/K8sNetworkHandler.java
@@ -0,0 +1,158 @@
+/*
+ * Copyright 2019-present Open Networking Foundation
+ *
+ * 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.k8snetworking.impl;
+
+import org.onosproject.cfg.ComponentConfigService;
+import org.onosproject.cluster.ClusterService;
+import org.onosproject.cluster.LeadershipService;
+import org.onosproject.cluster.NodeId;
+import org.onosproject.core.ApplicationId;
+import org.onosproject.core.CoreService;
+import org.onosproject.k8snetworking.api.DefaultK8sNetwork;
+import org.onosproject.k8snetworking.api.K8sNetwork;
+import org.onosproject.k8snetworking.api.K8sNetworkAdminService;
+import org.onosproject.k8snode.api.K8sNode;
+import org.onosproject.k8snode.api.K8sNodeEvent;
+import org.onosproject.k8snode.api.K8sNodeListener;
+import org.onosproject.k8snode.api.K8sNodeService;
+import org.onosproject.mastership.MastershipService;
+import org.onosproject.net.device.DeviceService;
+import org.onosproject.net.driver.DriverService;
+import org.osgi.service.component.annotations.Activate;
+import org.osgi.service.component.annotations.Component;
+import org.osgi.service.component.annotations.Deactivate;
+import org.osgi.service.component.annotations.Reference;
+import org.osgi.service.component.annotations.ReferenceCardinality;
+import org.slf4j.Logger;
+
+import java.util.Objects;
+import java.util.concurrent.ExecutorService;
+
+import static java.util.concurrent.Executors.newSingleThreadExecutor;
+import static org.onlab.util.Tools.groupedThreads;
+import static org.onosproject.k8snetworking.api.Constants.K8S_NETWORKING_APP_ID;
+import static org.slf4j.LoggerFactory.getLogger;
+
+/**
+ * Provides implementation of initializes the kubernetes network.
+ */
+@Component(immediate = true)
+public class K8sNetworkHandler {
+
+ private final Logger log = getLogger(getClass());
+
+ @Reference(cardinality = ReferenceCardinality.MANDATORY)
+ protected CoreService coreService;
+
+ @Reference(cardinality = ReferenceCardinality.MANDATORY)
+ protected ComponentConfigService configService;
+
+ @Reference(cardinality = ReferenceCardinality.MANDATORY)
+ protected DeviceService deviceService;
+
+ @Reference(cardinality = ReferenceCardinality.MANDATORY)
+ protected DriverService driverService;
+
+ @Reference(cardinality = ReferenceCardinality.MANDATORY)
+ protected LeadershipService leadershipService;
+
+ @Reference(cardinality = ReferenceCardinality.MANDATORY)
+ protected MastershipService mastershipService;
+
+ @Reference(cardinality = ReferenceCardinality.MANDATORY)
+ protected ClusterService clusterService;
+
+ @Reference(cardinality = ReferenceCardinality.MANDATORY)
+ protected K8sNodeService k8sNodeService;
+
+ @Reference(cardinality = ReferenceCardinality.MANDATORY)
+ protected K8sNetworkAdminService k8sNetworkService;
+
+ private final InternalK8sNodeListener k8sNodeListener =
+ new InternalK8sNodeListener();
+ private final ExecutorService eventExecutor = newSingleThreadExecutor(
+ groupedThreads(this.getClass().getSimpleName(), "event-handler", log));
+
+ private ApplicationId appId;
+ private NodeId localNodeId;
+
+ @Activate
+ protected void activate() {
+ appId = coreService.registerApplication(K8S_NETWORKING_APP_ID);
+
+ localNodeId = clusterService.getLocalNode().id();
+ leadershipService.runForLeadership(appId.name());
+ k8sNodeService.addListener(k8sNodeListener);
+
+ log.info("Started");
+ }
+
+ @Deactivate
+ protected void deactivate() {
+ k8sNodeService.removeListener(k8sNodeListener);
+ leadershipService.withdraw(appId.name());
+ eventExecutor.shutdown();
+
+ log.info("Stopped");
+ }
+
+ private class InternalK8sNodeListener implements K8sNodeListener {
+
+ private boolean isRelevantHelper() {
+ return Objects.equals(localNodeId, leadershipService.getLeader(appId.name()));
+ }
+
+ @Override
+ public void event(K8sNodeEvent event) {
+ switch (event.type()) {
+ case K8S_NODE_CREATED:
+ eventExecutor.execute(() -> processNodeCreation(event.subject()));
+ break;
+ case K8S_NODE_REMOVED:
+ eventExecutor.execute(() -> processNodeRemoval(event.subject()));
+ break;
+ default:
+ break;
+ }
+ }
+
+ private void processNodeCreation(K8sNode k8sNode) {
+ if (!isRelevantHelper()) {
+ return;
+ }
+
+ K8sNetwork network = k8sNetworkService.network(k8sNode.hostname());
+ if (network == null) {
+ K8sNetwork.Builder nBuilder = DefaultK8sNetwork.builder()
+ .networkId(k8sNode.hostname())
+ .name(k8sNode.hostname())
+ .cidr(k8sNode.podCidr());
+ k8sNetworkService.createNetwork(nBuilder.build());
+ }
+ }
+
+ private void processNodeRemoval(K8sNode k8sNode) {
+ if (!isRelevantHelper()) {
+ return;
+ }
+
+ K8sNetwork network = k8sNetworkService.network(k8sNode.hostname());
+ if (network != null) {
+ k8sNetworkService.removeNetwork(k8sNode.hostname());
+ }
+ }
+ }
+}