public async Task <IDictionary <string, List <EventStreamUpdated> > > LoadAsync()
{
var result = new Dictionary <string, List <EventStreamUpdated> >();
var query = m_table.PrepareEntityGetAllQuery();
var queryResult = await query.ExecuteAsync();
foreach (var row in queryResult)
{
var rowKey = (string)row[KnownProperties.RowKey];
var rowKeyParts = rowKey.Split('|');
var streamName = rowKeyParts[0];
var fromVersion = StreamVersion.Parse(rowKeyParts[1]);
var toVersion = StreamVersion.Create((int)row["ToVersion"]);
List <EventStreamUpdated> streamNotifications;
if (result.ContainsKey(streamName))
{
streamNotifications = result[streamName];
}
else
{
streamNotifications = new List <EventStreamUpdated>();
result[streamName] = streamNotifications;
}
streamNotifications.Add(new EventStreamUpdated(streamName, fromVersion, toVersion));
}
return(result);
}
public async Task <FetchEventsResult> FetchStreamEvents(string stream, EventStreamHeader header, StreamVersion fromVersion, int sliceSize)
{
// fromVersion already in slice
var isFetchingCompleted = false;
var nextSliceVersion = fromVersion.Increment(sliceSize - 1);
if (nextSliceVersion >= header.Version)
{
nextSliceVersion = header.Version;
isFetchingCompleted = true;
}
const string queryTemplate =
"((PartitionKey eq '{0}') and (RowKey eq 'HEAD')) or " +
"((PartitionKey eq '{0}') and (RowKey ge '{1}' and RowKey le '{2}'))";
var query = m_table.PrepareEntityFilterRangeQuery(
queryTemplate.FormatString(
stream,
fromVersion.ToString(),
nextSliceVersion.ToString()));
var queryResult = await query.ExecuteAsync();
var events = new SortedList <StreamVersion, JournaledEvent>(sliceSize);
foreach (var properties in queryResult)
{
var rowKey = (string)properties[KnownProperties.RowKey];
if (!rowKey.EqualsCi("HEAD"))
{
events.Add(StreamVersion.Parse((string)properties[KnownProperties.RowKey]), JournaledEvent.Create(properties));
}
}
return(new FetchEventsResult(isFetchingCompleted, events));
}
public void Parse_ForZero_ReturnsUnknownVersion()
{
var version = StreamVersion.Parse("0");
Assert.Equal(StreamVersion.Unknown, version);
}
public void IsUnknown_ForZeroVersion_ReturnsTrue()
{
var version = StreamVersion.Parse("0");
Assert.True(StreamVersion.IsUnknown(version));
}
protected override void RestoreFromProperties(Dictionary <string, string> properties)
{
StreamName = properties[NotificationPropertyKeys.Common.STREAM];
FromVersion = StreamVersion.Parse(properties[NotificationPropertyKeys.EventStreamUpdated.FROM_VERSION]);
ToVersion = StreamVersion.Parse(properties[NotificationPropertyKeys.EventStreamUpdated.TO_VERSION]);
}