/// <summary>
/// Gets all existing load balancers through a series of asynchronous operations,
/// each of which requests a subset of the available load balancers.
/// </summary>
/// <param name="provider">The load balancer service.</param>
/// <param name="limit">The maximum number of <see cref="LoadBalancer"/> objects to return from a single task. If this value is <c>null</c>, a provider-specific default is used.</param>
/// <returns>
/// A collection of <see cref="LoadBalancer"/> objects describing the available load
/// balancers.
/// </returns>
/// <exception cref="ArgumentNullException">If <paramref name="provider"/> is <c>null</c>.</exception>
/// <exception cref="ArgumentOutOfRangeException">If <paramref name="limit"/> is less than or equal to 0.</exception>
private static IEnumerable<LoadBalancer> ListAllLoadBalancers(ILoadBalancerService provider, int? limit, CancellationToken cancellationToken)
{
if (limit <= 0)
throw new ArgumentOutOfRangeException("limit");
LoadBalancer lastLoadBalancer = null;
do
{
LoadBalancerId marker = lastLoadBalancer != null ? lastLoadBalancer.Id : null;
IEnumerable<LoadBalancer> loadBalancers = provider.ListLoadBalancersAsync(marker, limit, cancellationToken).Result;
lastLoadBalancer = null;
foreach (LoadBalancer loadBalancer in loadBalancers)
{
yield return loadBalancer;
lastLoadBalancer = loadBalancer;
}
// pagination for this call does not match the documentation.
} while (false && lastLoadBalancer != null);
}
