tapi/src/main/java/org/opendaylight/transportpce/tapi/utils/TapiContext.java

   1 /*
   2  * Copyright © 2021 Nokia, Inc. 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 package org.opendaylight.transportpce.tapi.utils;
   9
  10 import java.nio.charset.Charset;
  11 import java.util.HashMap;
  12 import java.util.Map;
  13 import java.util.Optional;
  14 import java.util.UUID;
  15 import java.util.concurrent.ExecutionException;
  16 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
  17 import org.opendaylight.transportpce.common.network.NetworkTransactionService;
  18 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.common.rev181210.Context;
  19 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.common.rev181210.ContextBuilder;
  20 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.common.rev181210.Uuid;
  21 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.common.rev181210.global._class.Name;
  22 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.common.rev181210.global._class.NameBuilder;
  23 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.connectivity.rev181210.Context1;
  24 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.connectivity.rev181210.Context1Builder;
  25 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.connectivity.rev181210.context.ConnectivityContextBuilder;
  26 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.context.TopologyContextBuilder;
  27 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.topology.context.NwTopologyServiceBuilder;
  28 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  29 import org.slf4j.Logger;
  30 import org.slf4j.LoggerFactory;
  31
  32 public class TapiContext {
  33
  34     private static final Logger LOG = LoggerFactory.getLogger(TapiContext.class);
  35     public static final String TAPI_CONTEXT = "T-API context";
  36     private final NetworkTransactionService networkTransactionService;
  37
  38     public TapiContext(NetworkTransactionService networkTransactionService) {
  39         this.networkTransactionService = networkTransactionService;
  40         createTapiContext();
  41     }
  42
  43     private void createTapiContext() {
  44         try {
  45             // Augmenting tapi context to include topology and connectivity contexts
  46             Name contextName = new NameBuilder().setValue(TAPI_CONTEXT).setValueName("TAPI Context Name").build();
  47
  48             Context1 connectivityContext =
  49                 new Context1Builder()
  50                     .setConnectivityContext(
  51                         new ConnectivityContextBuilder()
  52                             .setConnection(new HashMap<>())
  53                             .setConnectivityService(new HashMap<>())
  54                             .build())
  55                     .build();
  56
  57             Name nwTopoServiceName =
  58                 new NameBuilder()
  59                     .setValue("Network Topo Service")
  60                     .setValueName("Network Topo Service Name")
  61                     .build();
  62
  63             org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.Context1 topologyContext
  64                 = new org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.Context1Builder()
  65                     .setTopologyContext(new TopologyContextBuilder()
  66                         .setNwTopologyService(new NwTopologyServiceBuilder()
  67                             .setTopology(new HashMap<>())
  68                             .setUuid(
  69                                 new Uuid(
  70                                     UUID.nameUUIDFromBytes("Network Topo Service".getBytes(Charset.forName("UTF-8")))
  71                                         .toString()))
  72                             .setName(Map.of(nwTopoServiceName.key(), nwTopoServiceName))
  73                             .build())
  74                         .setTopology(new HashMap<>())
  75                         .build())
  76                     .build();
  77
  78             ContextBuilder contextBuilder = new ContextBuilder()
  79                     .setName(Map.of(contextName.key(), contextName))
  80                     .setUuid(
  81                         new Uuid(UUID.nameUUIDFromBytes(TAPI_CONTEXT.getBytes(Charset.forName("UTF-8"))).toString()))
  82                     .setServiceInterfacePoint(new HashMap<>())
  83                     .addAugmentation(connectivityContext)
  84                     .addAugmentation(topologyContext);
  85
  86             // todo: add notification context
  87             InstanceIdentifier<Context> contextIID = InstanceIdentifier.builder(Context.class).build();
  88             // put in datastore
  89             this.networkTransactionService.put(LogicalDatastoreType.OPERATIONAL, contextIID, contextBuilder.build());
  90             this.networkTransactionService.commit().get();
  91             LOG.info("TAPI context created successfully.");
  92         } catch (InterruptedException | ExecutionException e) {
  93             LOG.error("Failed to create TAPI context", e);
  94         }
  95     }
  96
  97     public Context getTapiContext() {
  98         // TODO: verify this is correct. Should we identify the context IID with the context UUID??
  99         //  There is no Identifiable in Context model
 100         InstanceIdentifier<Context> contextIID = InstanceIdentifier.builder(Context.class).build();
 101         try {
 102             Optional<Context> optionalContext = this.networkTransactionService.read(LogicalDatastoreType.OPERATIONAL,
 103                     contextIID).get();
 104             if (!optionalContext.isPresent()) {
 105                 LOG.error("Tapi context is not present in datastore");
 106                 return null;
 107             }
 108             return optionalContext.get();
 109         } catch (InterruptedException | ExecutionException e) {
 110             LOG.error("Couldnt read tapi context from datastore", e);
 111             return null;
 112         }
 113     }
 114
 115     public void deleteTapiContext() {
 116
 117     }
 118
 119 }