Retry paging Microsoft Graph data - microsoft-graph-api

Question

I'm trying to get users from Microsoft Graph with the following code (followed this doc - https://learn.microsoft.com/en-us/graph/paging):
private readonly IGraphServiceClient _graphServiceClient;
public async Task<IGroupTransitiveMembersCollectionWithReferencesPage> GetGroupMembersPageByIdAsync(string groupId)
{
return await _graphServiceClient
.Groups[groupId]
.TransitiveMembers
.Request()
.Top(999)
.WithMaxRetry(5)
.GetAsync();
}
I'm trying to understand WithMaxRetry() property. Does that retry the call 5 times if the call fails? Is there a way to specify 'wait a few seconds before retrying each time'?

Answer 1

Yes, it means that the call will retry 5 times if it fails.
The default delay before retrying a request is 3 seconds. You can create own extension method to be able to set the both maxRetry and delay.
public static class Helper
{
/// <summary>
/// Sets the maximum number of retries to the default Retry Middleware Handler for this request.
/// This only works with the default Retry Middleware Handler.
/// If you use a custom Retry Middleware Handler, you have to handle it's retrieval in your implementation.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="baseRequest">The <see cref="BaseRequest"/> for the request.</param>
/// <param name="maxRetry">The maxRetry for the request.</param>
/// <param name="delay">The delay before the request.</param>
/// <returns></returns>
public static T WithMaxRetry<T>(this T baseRequest, int maxRetry, int delay) where T : IBaseRequest
{
string retryOptionKey = typeof(RetryHandlerOption).ToString();
if (baseRequest.MiddlewareOptions.ContainsKey(retryOptionKey))
{
var option = (baseRequest.MiddlewareOptions[retryOptionKey] as RetryHandlerOption);
option.MaxRetry = maxRetry;
option.Delay = delay;
}
else
{
baseRequest.MiddlewareOptions.Add(retryOptionKey, new RetryHandlerOption { MaxRetry = maxRetry, Delay = delay });
}
return baseRequest;
}
}
The maximum value for the delay is 180 s.
The extension method is based on BaseRequestExtensions