/// <summary>
/// Retrieve the latest commit matching the specified criteria
/// </summary>
/// <param name="streamId">Unique stream identifier</param>
/// <param name="atBucketRevision">Get the last commit less or equal the specified bucket revision</param>
/// <returns>Last commit info</returns>
public async Task <CommitInfo> GetLastCommitAsync(Guid?streamId = null, long?atBucketRevision = null)
{
if (atBucketRevision <= 0)
{
throw new ArgumentOutOfRangeException(nameof(atBucketRevision), "Parameter must be greater than 0.");
}
var filter = Builders <CommitInfo> .Filter.Empty;
if (streamId != null)
{
filter = filter & Builders <CommitInfo> .Filter.Eq(p => p.StreamId, streamId.Value);
}
if (atBucketRevision != null)
{
filter = filter & Builders <CommitInfo> .Filter.Lte(p => p.BucketRevision, atBucketRevision.Value);
}
var result = await InfoCollection
.Find(filter)
.Sort(Builders <CommitInfo> .Sort.Descending(p => p.BucketRevision))
.FirstOrDefaultAsync()
.ConfigureAwait(false);
return(result);
}