public async IAsyncEnumerable <byte[]> ConsumeAsync(string streamName, ConsumerOptions options)
{
streamName?.ThrowIfNull(nameof(streamName));
var consumerOptions = new ConsumerOptions.Builder().Build();
if (options != null)
{
consumerOptions = options;
}
_currentOffset = consumerOptions.StartOffset;
var keepConsuming = true;
while (keepConsuming)
{
var result = await _log.RetrieveEntryAsync(streamName, _currentOffset);
if (result != null)
{
yield return(result);
_currentOffset++;
}
else if (consumerOptions.StopConsumingAtEOF)
{
keepConsuming = false;
}
}
}
public static async Task <T> RetrieveEntry <T>(this IDistributedLog distributedLog, string streamName, int offset)
{
var bytes = await distributedLog.RetrieveEntryAsync(streamName, offset);
var payload = Encoding.UTF8.GetString(bytes);
return(JsonConvert.DeserializeObject <T>(payload));
}
public async Task Should_be_able_to_append_to_a_stream_and_retrieve_entry()
{
await _log.AppendAsync(StreamName, Encoding.UTF8.GetBytes("some stuff"));
byte[] entry = await _log.RetrieveEntryAsync(StreamName, 0);
Assert.That(Encoding.UTF8.GetString(entry), Is.EqualTo("some stuff"));
}