public async Task <IEventStreamCursor> OpenEventStreamCursorAsync(string streamName, int sliceSize)
{
Require.NotEmpty(streamName, "streamName");
Require.Positive(sliceSize, "sliceSize");
var header = await ReadStreamHeaderAsync(streamName);
if (EventStreamHeader.IsNewStream(header))
{
return(EventStreamCursor.UninitializedStream);
}
return(EventStreamCursor.CreateActiveCursor(
header,
StreamVersion.Start,
from => m_table.FetchStreamEvents(streamName, header, from, sliceSize)));
}
public async Task <IEventStreamCursor> OpenEventStreamCursorAsync(string streamName, EventStreamReaderId readerId, int sliceSize)
{
Require.NotEmpty(streamName, "streamName");
Require.Positive(sliceSize, "sliceSize");
var fromVersion = await ReadStreamReaderPositionAsync(streamName, readerId);
var header = await ReadStreamHeaderAsync(streamName);
if (header == EventStreamHeader.Unknown)
{
return(EventStreamCursor.UninitializedStream);
}
if (header.Version <= fromVersion)
{
return(EventStreamCursor.CreateEmptyCursor(header, fromVersion));
}
return(EventStreamCursor.CreateActiveCursor(
header,
fromVersion.Increment(),
from => m_table.FetchStreamEvents(streamName, header, from, sliceSize)));
}
public void Customize(IFixture fixture)
{
if (m_emptyCursor)
{
fixture.Customize <IEventStreamCursor>(composer => composer
.FromFactory(() => EventStreamCursor.UninitializedStream));
}
else
{
fixture.Customize <SortedList <StreamVersion, JournaledEvent> >(composer => composer
.FromFactory(() => new SortedList <StreamVersion, JournaledEvent>
{
{ StreamVersion.Create(1), fixture.Create <JournaledEvent>() },
{ StreamVersion.Create(2), fixture.Create <JournaledEvent>() },
{ StreamVersion.Create(3), fixture.Create <JournaledEvent>() }
})
.OmitAutoProperties());
fixture.Customize <FetchEvents>(composer => composer
.FromFactory(
() => version => new FetchEventsResult(
true,
fixture.Create <SortedList <StreamVersion, JournaledEvent> >()).YieldTask()));
fixture.Customize <EventStreamHeader>(composer => composer
.FromFactory(() => new EventStreamHeader(
fixture.Create("ETag"),
StreamVersion.Create(3))));
fixture.Customize <IEventStreamCursor>(composer => composer
.FromFactory(() => EventStreamCursor.CreateActiveCursor(
new EventStreamHeader(fixture.Create("Etag"), StreamVersion.Create(3)),
StreamVersion.Start,
fixture.Create <FetchEvents>())));
}
}
