/// <summary>
/// Enrich the stream from store
/// </summary>
/// <remarks>
/// <para/>
/// Null if stream exists but some of the ancestors do not
/// </remarks>
/// <param name="connection">Stream store</param>
/// <param name="key">Stream key</param>
/// <param name="serializer">Serializer</param>
/// <returns>Stream info</returns>
public static async Task <IStream> GetStream(
this IEventStoreConnection connection, string key, ISerializer <IEvent> serializer)
{
var metadata = await connection.GetStreamMetadataAsync(key);
var stream = serializer.DecodeStreamMetadata(metadata.StreamMetadata.AsJsonString());
if (stream == null)
{
return(new Stream(key));
}
var count = await connection.DeletedCount(key);
stream.AddDeleted(count);
var parent = stream.Parent;
while (parent != null && parent.Version > ExpectedVersion.EmptyStream)
{
var parentMetadata = await connection.GetStreamMetadataAsync(parent.Key);
if (parentMetadata.StreamMetadata == null)
{
return(null);
}
count = await connection.DeletedCount(parent.Key);
parent.AddDeleted(count);
var grandParent = serializer.DecodeStreamMetadata(parentMetadata.StreamMetadata.AsJsonString())?.Parent;
parent.Parent = grandParent;
parent = grandParent;
}
return(stream);
}
