/// <summary>
/// Creates requests for each pageToken executes all in a <see cref="MultiRequest"/> then orders the result
/// </summary>
private async Task <IEnumerable <TResponseItem> > CreateAndExecuteMultiRequest(
IEnumerator <PageTokenObject> pageTokens, CancellationToken cancellationToken = default(CancellationToken))
{
var results = new ConcurrentDictionary <int, IEnumerable <TResponseItem> >();
var multiRequest = new MultiRequest()
{
RequiresAuth = true
};
var callback = new MultiRequest.OnResponse <TResponse>(
(content, error, index, message) =>
{
if (error == null)
{
results.TryAdd(index, content.GetResponseItems <TResponseItem>());
}
//TODO: allow user to access the error infomation
});
while (pageTokens.MoveNext())
{
this.ListRequestBuilder.PageToken = pageTokens.Current.PageToken;
multiRequest.Queue(ListRequestBuilder.CreateRequest(), callback);
}
await multiRequest.ExecuteAsync(cancellationToken).ConfigureAwait(false);
return(results.OrderBy(k => k.Key).SelectMany(x => x.Value));
}
/// <summary>
/// Executes multiple requests relating to a single type of request, useful for when more than 50 items items will be requested.
/// <example>
/// Example: When requesting more than 50 videos using <see cref="VideosResource.ListRequest"/> <see cref="items"/> will be the ids for the videos and <see cref="parameterName"/> will be "Id", <see cref="VideosResource.ListRequest.Id"/>
/// </example>
/// </summary>
/// <param name="items">The list of items to request</param>
/// <param name="parameterName">name of request Property that the items are associated with</param>
/// <param name="cancellationToken"></param>
/// <exception cref="ArgumentException"></exception>
/// <returns></returns>
public async Task <IEnumerable <TResponseItem> > ExecuteConcurrentFromParameters(IEnumerable <string> items,
string parameterName, CancellationToken cancellationToken = default(CancellationToken))
{
if (ListRequestBuilder.GetType().GetProperty(parameterName) == null)
{
throw new ArgumentException(parameterName + " is not a valid parameterName for " + typeof(TRequest), nameof(parameterName));
}
var results = new ConcurrentDictionary <int, IEnumerable <TResponseItem> >();
var multiRequest = new MultiRequest()
{
RequiresAuth = true
};
var callback = new MultiRequest.OnResponse <TResponse>(
(content, error, index, message) =>
{
if (error == null)
{
results.TryAdd(index, content.GetResponseItems <TResponseItem>());
}
});
foreach (var value in items.Chunk(50).Select(chunk => string.Join(",", chunk))) //each 50 items as csv
{
ListRequestBuilder.GetType().GetProperty(parameterName).SetValue(ListRequestBuilder, value);
multiRequest.Queue(ListRequestBuilder.CreateRequest(), callback);
}
await multiRequest.ExecuteAsync(cancellationToken).ConfigureAwait(false);
return(results.OrderBy(k => k.Key).SelectMany(x => x.Value));
}