vpnservice/elanmanager/elanmanager-impl/src/main/java/org/opendaylight/netvirt/elan/internal/ElanInstanceManager.java

   1 /*
   2  * Copyright (c) 2016 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.elan.internal;
  10
  11 import com.google.common.base.Optional;
  12 import com.google.common.util.concurrent.ListenableFuture;
  13
  14 import java.util.ArrayList;
  15 import java.util.List;
  16
  17 import org.opendaylight.controller.md.sal.binding.api.WriteTransaction;
  18 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  19 import org.opendaylight.genius.datastoreutils.AsyncDataTreeChangeListenerBase;
  20 import org.opendaylight.genius.interfacemanager.globals.InterfaceInfo;
  21 import org.opendaylight.netvirt.elan.utils.ElanConstants;
  22 import org.opendaylight.netvirt.elan.utils.ElanUtils;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.etree.rev160614.EtreeInstance;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.ElanDpnInterfaces;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.ElanInstances;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.dpn.interfaces.ElanDpnInterfacesList;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.dpn.interfaces.ElanDpnInterfacesListKey;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.dpn.interfaces.elan.dpn.interfaces.list.DpnInterfaces;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.instances.ElanInstance;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.instances.ElanInstanceKey;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.interfaces.ElanInterface;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.state.Elan;
  33 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  34 import org.slf4j.Logger;
  35 import org.slf4j.LoggerFactory;
  36
  37 public class ElanInstanceManager extends AsyncDataTreeChangeListenerBase<ElanInstance, ElanInstanceManager>
  38         implements AutoCloseable {
  39
  40     private ElanServiceProvider elanServiceProvider = null;
  41     private static volatile ElanInstanceManager elanInstanceManager = null;
  42     private static final Logger logger = LoggerFactory.getLogger(ElanInstanceManager.class);
  43
  44     private ElanInstanceManager(ElanServiceProvider elanServiceProvider) {
  45         super(ElanInstance.class, ElanInstanceManager.class);
  46         this.elanServiceProvider = elanServiceProvider;
  47     }
  48
  49     public static ElanInstanceManager getElanInstanceManager(ElanServiceProvider elanServiceProvider) {
  50         if (elanInstanceManager == null) {
  51             synchronized (ElanInstanceManager.class) {
  52                 if (elanInstanceManager == null) {
  53                     elanInstanceManager = new ElanInstanceManager(elanServiceProvider);
  54                 }
  55             }
  56         }
  57         return elanInstanceManager;
  58     }
  59
  60     @Override
  61     protected void remove(InstanceIdentifier<ElanInstance> identifier, ElanInstance deletedElan) {
  62         logger.trace("Remove ElanInstance - Key: {}, value: {}", identifier, deletedElan);
  63         List<ListenableFuture<Void>> futures = new ArrayList<>();
  64         String elanName = deletedElan.getElanInstanceName();
  65         // check the elan Instance present in the Operational DataStore
  66         Elan existingElan = ElanUtils.getElanByName(elanName);
  67         long elanTag = deletedElan.getElanTag();
  68         // Cleaning up the existing Elan Instance
  69         if (existingElan != null) {
  70             List<String> elanInterfaces = existingElan.getElanInterfaces();
  71             if (elanInterfaces != null && !elanInterfaces.isEmpty()) {
  72                 for (String elanInterfaceName : elanInterfaces) {
  73                     InstanceIdentifier<ElanInterface> elanInterfaceId = ElanUtils
  74                             .getElanInterfaceConfigurationDataPathId(elanInterfaceName);
  75                     InterfaceInfo interfaceInfo = elanServiceProvider.getInterfaceManager()
  76                             .getInterfaceInfo(elanInterfaceName);
  77                     elanServiceProvider.getElanInterfaceManager().removeElanInterface(futures, deletedElan, elanInterfaceName,
  78                             interfaceInfo, false);
  79                     ElanUtils.delete(elanServiceProvider.getBroker(), LogicalDatastoreType.CONFIGURATION,
  80                             elanInterfaceId);
  81                 }
  82             }
  83             ElanUtils.delete(elanServiceProvider.getBroker(), LogicalDatastoreType.OPERATIONAL,
  84                     ElanUtils.getElanInstanceOperationalDataPath(elanName));
  85             ElanUtils.delete(elanServiceProvider.getBroker(), LogicalDatastoreType.OPERATIONAL,
  86                     getElanDpnOperationDataPath(elanName));
  87             ElanUtils.delete(elanServiceProvider.getBroker(), LogicalDatastoreType.OPERATIONAL,
  88                     ElanUtils.getElanInfoEntriesOperationalDataPath(elanTag));
  89         }
  90         // Release tag
  91         ElanUtils.releaseId(elanServiceProvider.getIdManager(), ElanConstants.ELAN_ID_POOL_NAME, elanName);
  92         if (deletedElan.getAugmentation(EtreeInstance.class) != null) {
  93             removeEtreeInstance(deletedElan);
  94         }
  95     }
  96
  97     private void removeEtreeInstance(ElanInstance deletedElan) {
  98         // Release leaves tag
  99         ElanUtils.releaseId(elanServiceProvider.getIdManager(), ElanConstants.ELAN_ID_POOL_NAME,
 100                 deletedElan.getElanInstanceName() + ElanConstants.LEAVES_POSTFIX);
 101
 102         ElanUtils.delete(elanServiceProvider.getBroker(), LogicalDatastoreType.OPERATIONAL,
 103                 ElanUtils.getElanInfoEntriesOperationalDataPath(
 104                 deletedElan.getAugmentation(EtreeInstance.class).getEtreeLeafTagVal().getValue()));
 105     }
 106
 107     @Override
 108     protected void update(InstanceIdentifier<ElanInstance> identifier, ElanInstance original, ElanInstance update) {
 109         Long existingElanTag = original.getElanTag();
 110         if (existingElanTag != null && existingElanTag == update.getElanTag()) {
 111             return;
 112         } else if (update.getElanTag() == null) {
 113             // update the elan-Instance with new properties
 114             WriteTransaction tx = elanServiceProvider.getBroker().newWriteOnlyTransaction();
 115             ElanUtils.updateOperationalDataStore(elanServiceProvider.getBroker(), elanServiceProvider.getIdManager(),
 116                     update, new ArrayList<String>(), tx);
 117             ElanUtils.waitForTransactionToComplete(tx);
 118             return;
 119         }
 120         elanServiceProvider.getElanInterfaceManager().handleunprocessedElanInterfaces(update);
 121     }
 122
 123     @Override
 124     protected void add(InstanceIdentifier<ElanInstance> identifier, ElanInstance elanInstanceAdded) {
 125         Elan elanInfo = ElanUtils.getElanByName(elanInstanceAdded.getElanInstanceName());
 126         if (elanInfo == null) {
 127             WriteTransaction tx = elanServiceProvider.getBroker().newWriteOnlyTransaction();
 128             ElanUtils.updateOperationalDataStore(elanServiceProvider.getBroker(), elanServiceProvider.getIdManager(),
 129                     elanInstanceAdded, new ArrayList<String>(), tx);
 130             ElanUtils.waitForTransactionToComplete(tx);
 131         }
 132     }
 133
 134     public ElanInstance getElanInstanceByName(String elanInstanceName) {
 135         InstanceIdentifier<ElanInstance> elanIdentifierId = getElanInstanceConfigurationDataPath(elanInstanceName);
 136         Optional<ElanInstance> elanInstance = ElanUtils.read(elanServiceProvider.getBroker(),
 137                 LogicalDatastoreType.CONFIGURATION, elanIdentifierId);
 138         if (elanInstance.isPresent()) {
 139             return elanInstance.get();
 140         }
 141         return null;
 142     }
 143
 144     public List<DpnInterfaces> getElanDPNByName(String elanInstanceName) {
 145         InstanceIdentifier<ElanDpnInterfacesList> elanIdentifier = getElanDpnOperationDataPath(elanInstanceName);
 146         Optional<ElanDpnInterfacesList> elanInstance = ElanUtils.read(elanServiceProvider.getBroker(),
 147                 LogicalDatastoreType.OPERATIONAL, elanIdentifier);
 148         if (elanInstance.isPresent()) {
 149             ElanDpnInterfacesList elanDPNs = elanInstance.get();
 150             return elanDPNs.getDpnInterfaces();
 151         }
 152         return null;
 153     }
 154
 155     private InstanceIdentifier<ElanDpnInterfacesList> getElanDpnOperationDataPath(String elanInstanceName) {
 156         return InstanceIdentifier.builder(ElanDpnInterfaces.class)
 157                 .child(ElanDpnInterfacesList.class, new ElanDpnInterfacesListKey(elanInstanceName)).build();
 158     }
 159
 160     private InstanceIdentifier<ElanInstance> getElanInstanceConfigurationDataPath(String elanInstanceName) {
 161         return InstanceIdentifier.builder(ElanInstances.class)
 162                 .child(ElanInstance.class, new ElanInstanceKey(elanInstanceName)).build();
 163     }
 164
 165     @Override
 166     protected InstanceIdentifier<ElanInstance> getWildCardPath() {
 167         return InstanceIdentifier.create(ElanInstances.class).child(ElanInstance.class);
 168     }
 169
 170     @Override
 171     protected ElanInstanceManager getDataTreeChangeListener() {
 172         return this;
 173     }
 174
 175 }