coe/impl/src/main/java/org/opendaylight/netvirt/coe/listeners/PodListener.java

   1 /*
   2  * Copyright (c) 2017 - 2018 Ericsson India Global Services Pvt Ltd. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8
   9 package org.opendaylight.netvirt.coe.listeners;
  10
  11 import static org.opendaylight.genius.infra.Datastore.CONFIGURATION;
  12 import static org.opendaylight.genius.infra.Datastore.OPERATIONAL;
  13
  14 import com.google.common.util.concurrent.ListenableFuture;
  15 import java.util.ArrayList;
  16 import java.util.Collection;
  17 import java.util.List;
  18 import java.util.Objects;
  19 import java.util.concurrent.Callable;
  20 import javax.annotation.Nonnull;
  21 import javax.annotation.PreDestroy;
  22 import javax.inject.Inject;
  23 import javax.inject.Singleton;
  24 import org.apache.aries.blueprint.annotation.service.Reference;
  25 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  26 import org.opendaylight.controller.md.sal.binding.api.DataObjectModification;
  27 import org.opendaylight.controller.md.sal.binding.api.DataTreeChangeListener;
  28 import org.opendaylight.controller.md.sal.binding.api.DataTreeIdentifier;
  29 import org.opendaylight.controller.md.sal.binding.api.DataTreeModification;
  30 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  31 import org.opendaylight.genius.infra.ManagedNewTransactionRunner;
  32 import org.opendaylight.genius.infra.ManagedNewTransactionRunnerImpl;
  33 import org.opendaylight.infrautils.jobcoordinator.JobCoordinator;
  34 import org.opendaylight.netvirt.coe.utils.CoeUtils;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.coe.northbound.pod.rev170611.Coe;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.coe.northbound.pod.rev170611.coe.Pods;
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.coe.northbound.pod.rev170611.pod_attributes.Interface;
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.instances.ElanInstance;
  39 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  40 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  41 import org.slf4j.Logger;
  42 import org.slf4j.LoggerFactory;
  43
  44 @Singleton
  45 public class PodListener implements DataTreeChangeListener<Pods> {
  46
  47     private static final Logger LOG = LoggerFactory.getLogger(PodListener.class);
  48     private ListenerRegistration<PodListener> listenerRegistration;
  49     private final JobCoordinator jobCoordinator;
  50     private final ManagedNewTransactionRunner txRunner;
  51     private final CoeUtils coeUtils;
  52
  53     @Inject
  54     public PodListener(@Reference final DataBroker dataBroker, @Reference JobCoordinator jobCoordinator,
  55                        CoeUtils coeUtils) {
  56         registerListener(LogicalDatastoreType.CONFIGURATION, dataBroker);
  57         this.txRunner = new ManagedNewTransactionRunnerImpl(dataBroker);
  58         this.jobCoordinator = jobCoordinator;
  59         this.coeUtils = coeUtils;
  60     }
  61
  62     protected InstanceIdentifier<Pods> getWildCardPath() {
  63         return InstanceIdentifier.create(Coe.class).child(Pods.class);
  64     }
  65
  66     public void registerListener(LogicalDatastoreType dsType, final DataBroker db) {
  67         final DataTreeIdentifier<Pods> treeId = new DataTreeIdentifier<>(dsType, getWildCardPath());
  68         listenerRegistration = db.registerDataTreeChangeListener(treeId, PodListener.this);
  69     }
  70
  71     @PreDestroy
  72     public void close() {
  73         if (listenerRegistration != null) {
  74             try {
  75                 listenerRegistration.close();
  76             } finally {
  77                 listenerRegistration = null;
  78             }
  79         }
  80     }
  81
  82     @Override
  83     public void onDataTreeChanged(@Nonnull Collection<DataTreeModification<Pods>> collection) {
  84         collection.forEach(
  85             podsDataTreeModification -> podsDataTreeModification.getRootNode().getModifiedChildren().stream()
  86                     .filter(
  87                         dataObjectModification -> dataObjectModification.getDataType().equals(Interface.class))
  88                         .forEach(dataObjectModification -> onPodInterfacesChanged(
  89                                 (DataObjectModification<Interface>) dataObjectModification,
  90                                 podsDataTreeModification.getRootPath().getRootIdentifier(),
  91                                 podsDataTreeModification.getRootNode()))
  92         );
  93     }
  94
  95     public void onPodInterfacesChanged(final DataObjectModification<Interface> dataObjectModification,
  96                                        final InstanceIdentifier<Pods> rootIdentifier,
  97                                        DataObjectModification<Pods> rootNode) {
  98         Pods pods = rootNode.getDataAfter();
  99         Pods podsBefore = rootNode.getDataBefore();
 100         Interface podInterfaceBefore = dataObjectModification.getDataBefore();
 101         Interface podInterfaceAfter = dataObjectModification.getDataAfter();
 102         switch (dataObjectModification.getModificationType()) {
 103             case DELETE:
 104                 remove(podsBefore, podInterfaceBefore);
 105                 break;
 106             case SUBTREE_MODIFIED:
 107                 update(rootIdentifier, pods, podsBefore, podInterfaceBefore, podInterfaceAfter);
 108                 break;
 109             case WRITE:
 110                 if (podInterfaceBefore == null) {
 111                     add(rootIdentifier, pods, podInterfaceAfter);
 112                 } else {
 113                     update(rootIdentifier, pods, podsBefore, podInterfaceBefore,
 114                             podInterfaceAfter);
 115                 }
 116                 break;
 117             default:
 118                 LOG.error("Unhandled Modificiation Type{} for {}", dataObjectModification.getModificationType(),
 119                         rootIdentifier);
 120         }
 121     }
 122
 123     private void add(InstanceIdentifier<Pods> instanceIdentifier, Pods pods, Interface podInterface) {
 124         LOG.trace("Pod added {}",pods);
 125         if (pods.getNetworkNS() == null || pods.getHostIpAddress() == null) {
 126             LOG.warn("pod {} added with insufficient information to process", pods.getName());
 127             return;
 128         }
 129         jobCoordinator.enqueueJob(pods.getName(), new PodConfigAddWorker(txRunner, coeUtils,
 130                 instanceIdentifier, pods, podInterface));
 131     }
 132
 133     private void update(InstanceIdentifier<Pods> instanceIdentifier, Pods podsAfter, Pods podsBefore,
 134                         Interface podInterfaceBefore, Interface podInterfaceAfter) {
 135         LOG.trace("Pod updated before :{}, after :{}",podsBefore, podsAfter);
 136         if (!Objects.equals(podsAfter.getHostIpAddress(), podsBefore.getHostIpAddress())
 137                 || !Objects.equals(podInterfaceBefore.getIpAddress(), podInterfaceAfter.getIpAddress())) {
 138             //if (podsBefore.getNetworkNS() != null || podsBefore.getHostIpAddress() != null) {
 139                 // Case where pod is moving from one namespace to another
 140                 // issue a delete of all previous configuration, and add the new one.
 141                 //jobCoordinator.enqueueJob(podsAfter.getName(), new PodConfigRemoveWorker(txRunner, podsBefore));
 142             //}
 143             jobCoordinator.enqueueJob(podsAfter.getName(), new PodConfigAddWorker(txRunner, coeUtils,
 144                     instanceIdentifier, podsAfter, podInterfaceAfter));
 145         }
 146     }
 147
 148     private void remove(Pods pods, Interface podInterface) {
 149         LOG.trace("Pod removed {}", pods);
 150         if (pods.getNetworkNS() == null || pods.getHostIpAddress() == null) {
 151             LOG.warn("pod {} deletion without a valid network id", podInterface.getUid().getValue());
 152             return;
 153         }
 154
 155         jobCoordinator.enqueueJob(pods.getName(), new PodConfigRemoveWorker(txRunner, coeUtils, pods));
 156     }
 157
 158     private static class PodConfigAddWorker implements Callable<List<ListenableFuture<Void>>> {
 159         InstanceIdentifier<Pods> podsInstanceIdentifier;
 160         private final Pods pods;
 161         private final Interface podInterface;
 162         private final ManagedNewTransactionRunner txRunner;
 163         private final CoeUtils coeUtils;
 164
 165         PodConfigAddWorker(ManagedNewTransactionRunner txRunner, CoeUtils coeUtils,
 166                            InstanceIdentifier<Pods> podsInstanceIdentifier,
 167                            Pods pods, Interface podInterface) {
 168             this.pods = pods;
 169             this.podInterface = podInterface;
 170             this.txRunner = txRunner;
 171             this.podsInstanceIdentifier = podsInstanceIdentifier;
 172             this.coeUtils = coeUtils;
 173         }
 174
 175         @Override
 176         public List<ListenableFuture<Void>> call() {
 177             LOG.trace("Adding Pod : {}", podInterface);
 178             String interfaceName = coeUtils.buildInterfaceName(pods.getClusterId().getValue(), pods.getName());
 179             List<ListenableFuture<Void>> futures = new ArrayList<>();
 180             futures.add(txRunner.callWithNewReadWriteTransactionAndSubmit(CONFIGURATION, tx ->  {
 181                 String nodeIp = pods.getHostIpAddress().stringValue();
 182                 ElanInstance elanInstance = coeUtils.createElanInstanceForTheFirstPodInTheNetwork(
 183                         pods.getClusterId().getValue(), nodeIp, podInterface, tx);
 184                 LOG.info("interface creation for pod {}", interfaceName);
 185                 String portInterfaceName = coeUtils.createOfPortInterface(interfaceName, tx);
 186                 LOG.debug("Creating ELAN Interface for pod {}", interfaceName);
 187                 coeUtils.createElanInterface(portInterfaceName,
 188                         elanInstance.getElanInstanceName(), tx);
 189             }));
 190             if (podInterface.getIpAddress() != null) {
 191                 futures.add(txRunner.callWithNewWriteOnlyTransactionAndSubmit(OPERATIONAL, tx -> {
 192                     coeUtils.createPodNameToPodUuidMap(interfaceName, podsInstanceIdentifier, tx);
 193                 }));
 194             }
 195             return futures;
 196         }
 197     }
 198
 199     private static class PodConfigRemoveWorker implements Callable<List<ListenableFuture<Void>>> {
 200         private final Pods pods;
 201         private final ManagedNewTransactionRunner txRunner;
 202         private final CoeUtils coeUtils;
 203
 204         PodConfigRemoveWorker(ManagedNewTransactionRunner txRunner, CoeUtils coeUtils,
 205                               Pods pods) {
 206             this.pods = pods;
 207             this.txRunner = txRunner;
 208             this.coeUtils = coeUtils;
 209         }
 210
 211         @Override
 212         public List<ListenableFuture<Void>> call() {
 213             List<ListenableFuture<Void>> futures = new ArrayList<>();
 214             String podInterfaceName = coeUtils.buildInterfaceName(pods.getClusterId().getValue(), pods.getName());
 215             futures.add(txRunner.callWithNewWriteOnlyTransactionAndSubmit(CONFIGURATION, tx -> {
 216                 LOG.trace("Deleting Pod : {}", podInterfaceName);
 217                 LOG.debug("Deleting VPN Interface for pod {}", podInterfaceName);
 218                 coeUtils.deleteVpnInterface(podInterfaceName, tx);
 219                 LOG.debug("Deleting ELAN Interface for pod {}", podInterfaceName);
 220                 coeUtils.deleteElanInterface(podInterfaceName, tx);
 221                 LOG.info("interface deletion for pod {}", podInterfaceName);
 222                 coeUtils.deleteOfPortInterface(podInterfaceName, tx);
 223                 coeUtils.unbindKubeProxyService(podInterfaceName, tx);
 224             }));
 225             futures.add(txRunner.callWithNewWriteOnlyTransactionAndSubmit(OPERATIONAL, tx -> {
 226                 coeUtils.deletePodNameToPodUuidMap(podInterfaceName, tx);
 227             }));
 228             return futures;
 229         }
 230     }
 231 }