/// <summary>
/// Check if a package exists.
/// </summary>
/// <param name="packageId">The package ID.</param>
/// <param name="cancellationToken">A token to cancel the task.</param>
/// <returns>Whether the package exists.</returns>
public virtual async Task <bool> ExistsAsync(
string packageId,
CancellationToken cancellationToken = default)
{
var versions = await _contentClient.GetPackageVersionsOrNullAsync(packageId, cancellationToken);
return(versions != null && versions.Versions.Any());
}
private async Task <IReadOnlyList <NuGetVersion> > GetAllVersionsFromPackageContentResourceAsync(string packageId, CancellationToken cancellationToken)
{
cancellationToken.ThrowIfCancellationRequested();
var packageContentUrl = await _serviceIndexService.GetPackageContentUrlAsync();
var requestUrl = $"{packageContentUrl}/{packageId.ToLowerInvariant()}/index.json";
var result = await _packageContentClient.GetPackageVersionsOrNullAsync(requestUrl);
if (result == null)
{
return(new NuGetVersion[0]);
}
return(result.Versions);
}