private Task WriteAsync(string streamName, StreamPosition position)
{
FilterDefinition <StreamPosition> filter = GetStreamFilter(streamName);
return(collection.ReplaceOneAsync(filter, position, new UpdateOptions
{
IsUpsert = true
}));
}
private async Task SaveAsyncInternall(string streamName, long pos)
{
StreamPosition entry = await GetOrCreate(streamName);
entry.TimestampUTC = DateTime.UtcNow;
entry.Position = pos;
await WriteAsync(streamName, entry);
}
private Task WriteAsync(string streamName, StreamPosition position)
{
var filter = GetStreamFilter(streamName);
return(collection.ReplaceOneAsync(filter, position, new ReplaceOptions()
{
IsUpsert = true
}));
}
private async Task <StreamPosition> GetOrCreate(string streamName)
{
StreamPosition entry = await ReadAsync(streamName) ?? new StreamPosition
{
Id = streamName.ToLowerInvariant(),
StreamName = streamName,
CreatedUTC = DateTime.UtcNow
};
return(entry);
}
public async Task <long?> GetAsync(string streamName)
{
StreamPosition entry = await ReadAsync(streamName);
return(entry?.Position);
}