/// <summary>
/// Gets a resource of a given type and with the provided id from a given table
/// </summary>
/// <param name="table"></param>
/// <param name="typeName"></param>
/// <param name="id"></param>
/// <returns></returns>
private async Task <dynamic> Get(DynamoDbTable table, string typeName, string id)
{
var hashKey = new Primitive($"{typeName}");
var rangeKey = new Primitive(id);
Logger.Debug("Getting item with hash key {0} and range key {1} from table {2}...", hashKey, rangeKey, table.TableName);
var result = await table.GetItemAsync(hashKey, rangeKey);
return(result != null?DynamoDbDocumentHelper.ToObject(result) : null);
}
/// <summary>
/// Creates or updates record in DynamoDB
/// </summary>
/// <param name="resource"></param>
/// <returns></returns>
private async Task <dynamic> CreateOrUpdate(dynamic resource)
{
await(await Table(resource.Type)).PutItemAsync(DynamoDbDocumentHelper.ToDocument(resource));
return(await Get(resource.Type, resource.Id));
}
/// <summary>
/// Creates or updates record in DynamoDB
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="resource"></param>
/// <returns></returns>
private async Task <T> CreateOrUpdate <T>(dynamic resource) where T : Resource, new()
{
await(await Table(typeof(T))).PutItemAsync(DynamoDbDocumentHelper.ToDocument(resource));
return(await Get <T>(resource.Id));
}
/// <summary>
/// Queries resources of type <see cref="T"/> using the provided criteria, in the form of key/value pairs
/// </summary>
/// <param name="parameters"></param>
/// <returns></returns>
public async Task <IEnumerable <dynamic> > Query <T>(IDictionary <string, string> parameters) where T : Resource, new()
{
return
((await(await Table(typeof(T))).Query(new Primitive(typeof(T).Name), parameters.ToQueryFilter()).GetRemainingAsync())
.Select(d => DynamoDbDocumentHelper.ToObject(d)));
}
