public Task StoreCategory(Category category, CancellationToken cancellationToken)
{
Ensure.Any.IsNotNull(category, nameof(category));
var adapter = new CategoryAdapter(category);
return(InsertOrReplaceEntity(TableName, adapter, cancellationToken));
}
public async Task <Category> GetCategory(CategoryGroup group, string name, CancellationToken cancellationToken)
{
var partitionKey = CategoryAdapter.BuildPartitionKey(group);
var rowKey = CategoryAdapter.BuildRowKey(name);
var table = GetTable(TableName);
var operation = TableOperation.Retrieve <CategoryAdapter>(partitionKey, rowKey);
var result = await table.ExecuteAsync(operation, null, null, cancellationToken).ConfigureAwait(false);
var adapter = result.Result as CategoryAdapter;
return(adapter?.Value);
}
public async Task CreateCategory(CategoryGroup group, string name, CancellationToken cancellationToken)
{
Ensure.String.IsNotNullOrWhiteSpace(name, nameof(name));
var category = new Category
{
Group = group,
Name = name
};
var adapter = new CategoryAdapter(category);
// We can't overwrite the existing one because the existing one might have been reviewed by an admin
// with a public cache that is out of date such that a user editing a profile is trying to create a new category
// This was InsertOrReplace then we would lose the reviewed category information
var operation = TableOperation.Insert(adapter);
try
{
await ExecuteWithCreateTable(TableName, operation, cancellationToken).ConfigureAwait(false);
}
catch (StorageException ex)
{
if (ex.RequestInformation.HttpStatusCode == 409)
{
// This category already exists
// A user has tried to create a category that already exists
// We might have hit this because the API cache was out of date
// such that the category was already written to storage, but the API didn't think it was there
// The outcome is that the category exists either way which is what we want
return;
}
throw;
}
}