Initial support for multi kubernetes clusters for k8s nodes
Change-Id: I6ca132898f8e157e0583de38a637fdc135f21d6f
(cherry picked from commit e2a04cedde73618ef24575e70cb221e03854de1d)
diff --git a/apps/k8s-node/app/src/main/java/org/onosproject/k8snode/impl/ExternalNetworkManager.java b/apps/k8s-node/app/src/main/java/org/onosproject/k8snode/impl/ExternalNetworkManager.java
new file mode 100644
index 0000000..184998a
--- /dev/null
+++ b/apps/k8s-node/app/src/main/java/org/onosproject/k8snode/impl/ExternalNetworkManager.java
@@ -0,0 +1,160 @@
+/*
+ * Copyright 2020-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.k8snode.impl;
+
+import org.apache.commons.net.util.SubnetUtils;
+import org.onlab.packet.IpAddress;
+import org.onlab.packet.IpPrefix;
+import org.onlab.util.KryoNamespace;
+import org.onosproject.core.ApplicationId;
+import org.onosproject.core.CoreService;
+import org.onosproject.k8snode.api.ExternalNetworkService;
+import org.onosproject.store.serializers.KryoNamespaces;
+import org.onosproject.store.service.ConsistentMap;
+import org.onosproject.store.service.Serializer;
+import org.onosproject.store.service.StorageService;
+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.Arrays;
+import java.util.Set;
+import java.util.concurrent.ExecutorService;
+import java.util.stream.Collectors;
+
+import static java.util.concurrent.Executors.newSingleThreadExecutor;
+import static org.onlab.util.Tools.groupedThreads;
+import static org.onosproject.k8snode.api.K8sNodeService.APP_ID;
+import static org.slf4j.LoggerFactory.getLogger;
+
+/**
+ * External network service implementation.
+ */
+@Component(
+ immediate = true,
+ service = { ExternalNetworkService.class }
+)
+public class ExternalNetworkManager implements ExternalNetworkService {
+
+ private final Logger log = getLogger(getClass());
+
+ private static final KryoNamespace
+ SERIALIZER_EXTERNAL_NETWORK = KryoNamespace.newBuilder()
+ .register(KryoNamespaces.API)
+ .build();
+
+ @Reference(cardinality = ReferenceCardinality.MANDATORY)
+ protected CoreService coreService;
+
+ @Reference(cardinality = ReferenceCardinality.MANDATORY)
+ protected StorageService storageService;
+
+ private final ExecutorService eventExecutor = newSingleThreadExecutor(
+ groupedThreads(this.getClass().getSimpleName(), "event-handler", log));
+
+ private ConsistentMap<String, Set<String>> networkIpPool;
+
+ @Activate
+ protected void activate() {
+ ApplicationId appId = coreService.registerApplication(APP_ID);
+ networkIpPool = storageService.<String, Set<String>>consistentMapBuilder()
+ .withSerializer(Serializer.using(SERIALIZER_EXTERNAL_NETWORK))
+ .withName("external-network-ip-pool")
+ .withApplicationId(appId)
+ .build();
+ log.info("Started");
+ }
+
+ @Deactivate
+ protected void deactivate() {
+ eventExecutor.shutdown();
+ log.info("Stopped");
+ }
+
+ @Override
+ public void registerNetwork(IpPrefix cidr) {
+ if (!networkIpPool.containsKey(cidr.toString())) {
+ SubnetUtils utils = new SubnetUtils(cidr.toString());
+ utils.setInclusiveHostCount(false);
+ SubnetUtils.SubnetInfo info = utils.getInfo();
+
+ Set<String> all = Arrays.stream(info.getAllAddresses())
+ .collect(Collectors.toSet());
+ all.remove(info.getNetworkAddress());
+ all.remove(info.getHighAddress());
+ all.remove(info.getLowAddress());
+ all.remove(info.getBroadcastAddress());
+
+ networkIpPool.put(cidr.toString(), all);
+ }
+ }
+
+ @Override
+ public void unregisterNetwork(IpPrefix cidr) {
+ if (!networkIpPool.containsKey(cidr.toString())) {
+ log.warn("The given network {} is not found!", cidr.toString());
+ } else {
+ networkIpPool.remove(cidr.toString());
+ }
+ }
+
+ @Override
+ public IpAddress getGatewayIp(IpPrefix cidr) {
+ SubnetUtils utils = new SubnetUtils(cidr.toString());
+ utils.setInclusiveHostCount(false);
+ SubnetUtils.SubnetInfo info = utils.getInfo();
+
+ return IpAddress.valueOf(info.getLowAddress());
+ }
+
+ @Override
+ public IpAddress allocateIp(IpPrefix cidr) {
+ if (!networkIpPool.containsKey(cidr.toString())) {
+ log.error("The given network {} is not found", cidr.toString());
+ return null;
+ } else {
+ Set<String> pool = networkIpPool.get(cidr.toString()).value();
+ String ipStr = pool.stream().findFirst().orElse(null);
+ if (ipStr == null) {
+ log.error("No IPs are found in the given network {}", cidr.toString());
+ return null;
+ }
+
+ pool.remove(ipStr);
+ networkIpPool.put(cidr.toString(), pool);
+ return IpAddress.valueOf(ipStr);
+ }
+ }
+
+ @Override
+ public void releaseIp(IpPrefix cidr, IpAddress ip) {
+ if (!networkIpPool.containsKey(cidr.toString())) {
+ log.error("The given network {} is not found", cidr.toString());
+ } else {
+ Set<String> pool = networkIpPool.get(cidr.toString()).value();
+ pool.add(ip.toString());
+ networkIpPool.put(cidr.toString(), pool);
+ }
+ }
+
+ @Override
+ public Set<String> getAllIps(IpPrefix cidr) {
+ return networkIpPool.get(cidr.toString()).value();
+ }
+}