MPG migration - standbypool

[haiyuazhang]

[mzhongl524]

The issues are summarized as follows (tsp was not converted from Swagger and to eliminate interference, I deleted the custom code before generating it again.):

• WritableSubResource does not contain a definition for DeserializeWritableSubResource, this issue is in the StandbyContainerGroupProperties class. The generated code is as follows: (original code link)

  internal static StandbyContainerGroupProperties DeserializeStandbyContainerGroupProperties(JsonElement element, ModelReaderWriterOptions options)
  {
      ......
      foreach (var item in prop.Value.EnumerateArray())
      {
         array.Add(WritableSubResource.DeserializeWritableSubResource(item, options));
     }
     ......
  }

• The StandbyVirtualMachinePoolPrediction and StandbyContainerGroupPoolPrediction classes have the same issue:
  Cannot assign to property or indexer 'StandbyVirtualMachinePoolPrediction.ForecastValues' - it is read-only

  The generated code is as follows: (original code link)

  public IReadOnlyList<long> ForecastValuesInstancesRequestedCount
  {
     get
     {
         if (ForecastValues is null)
         {
             ForecastValues = new StandbyContainerGroupPoolForecastValues();
         }
         return ForecastValues.InstancesRequestedCount;
     }
  }

• In TSP, the same model corresponds to two different classes in .NET. Currently, StandbyVirtualMachinePoolResourceProperties (the model in TSP) is renamed as the StandbyVirtualMachinePoolProperties class in the client, but I still need the StandbyVirtualMachinePoolUpdateProperties class (custom code is being processed). However, Swagger defines StandbyVirtualMachinePoolResourceUpdate, and in TSP, by performing an update operation on Azure.ResourceManager.Foundations.ResourceUpdateModel<> and using F12, the following content can be seen:

  /**
   * Defines a model type used to create named resource update models
   * e.g. `model MyResourceUpdate is ResourceUpdate<MyResourceProperties> {}`
   * @template Resource The type of the resource.
   * @template Properties The type of the properties.
   */
  @doc("The type used for update operations of the {name}.", Resource)
  @friendlyName("{name}Update", Resource)
  @omitIfEmpty("properties")
  model ResourceUpdateModel<
    Resource extends Foundations.SimpleResource,
    Properties extends TypeSpec.Reflection.Model
  >

  Therefore, this might be a problem in TSP.