public MultiStreamEventReader(IPublisher publisher, Guid eventReaderCorrelationId, IPrincipal readAs, int phase, string[] streams, Dictionary <string, int> fromPositions, bool resolveLinkTos, ITimeProvider timeProvider, bool stopOnEof = false, int?stopAfterNEvents = null)
: base(publisher, eventReaderCorrelationId, readAs, stopOnEof, stopAfterNEvents)
{
if (streams == null)
{
throw new ArgumentNullException("streams");
}
if (timeProvider == null)
{
throw new ArgumentNullException("timeProvider");
}
if (streams.Length == 0)
{
throw new ArgumentException("streams");
}
_streams = new HashSet <string>(streams);
_eofs = _streams.ToDictionary(v => v, v => false);
var positions = CheckpointTag.FromStreamPositions(phase, fromPositions);
ValidateTag(positions);
_fromPositions = positions;
_resolveLinkTos = resolveLinkTos;
_timeProvider = timeProvider;
foreach (var stream in streams)
{
_preparePositions.Add(stream, null);
}
}
public override CheckpointTag AdjustTag(CheckpointTag tag)
{
if (tag.Mode_ == CheckpointTag.Mode.MultiStream)
{
int p;
return(CheckpointTag.FromStreamPositions(
_streams.ToDictionary(v => v, v => tag.Streams.TryGetValue(v, out p) ? p : -1)));
}
switch (tag.Mode_)
{
case CheckpointTag.Mode.EventTypeIndex:
throw new NotSupportedException("Conversion from EventTypeIndex to MultiStream position tag is not supported");
case CheckpointTag.Mode.Stream:
int p;
return
(CheckpointTag.FromStreamPositions(
_streams.ToDictionary(v => v, v => tag.Streams.TryGetValue(v, out p) ? p : -1)));
case CheckpointTag.Mode.PreparePosition:
throw new NotSupportedException("Conversion from PreparePosition to MultiStream position tag is not supported");
case CheckpointTag.Mode.Position:
throw new NotSupportedException("Conversion from Position to MultiStream position tag is not supported");
default:
throw new Exception();
}
}
public override CheckpointTag AdjustTag(CheckpointTag tag)
{
if (tag.Phase < Phase)
{
return(tag);
}
if (tag.Phase > Phase)
{
throw new ArgumentException(
string.Format("Invalid checkpoint tag phase. Expected less or equal to: {0} Was: {1}", Phase,
tag.Phase), "tag");
}
if (tag.Mode_ == CheckpointTag.Mode.MultiStream)
{
long p;
return(CheckpointTag.FromStreamPositions(
tag.Phase, _streams.ToDictionary(v => v, v => tag.Streams.TryGetValue(v, out p) ? p : -1)));
}
switch (tag.Mode_)
{
case CheckpointTag.Mode.EventTypeIndex:
throw new NotSupportedException(
"Conversion from EventTypeIndex to MultiStream position tag is not supported");
case CheckpointTag.Mode.Stream:
long p;
return(CheckpointTag.FromStreamPositions(
tag.Phase, _streams.ToDictionary(v => v, v => tag.Streams.TryGetValue(v, out p) ? p : -1)));
case CheckpointTag.Mode.PreparePosition:
throw new NotSupportedException(
"Conversion from PreparePosition to MultiStream position tag is not supported");
case CheckpointTag.Mode.Position:
throw new NotSupportedException(
"Conversion from Position to MultiStream position tag is not supported");
default:
throw new NotSupportedException(string.Format(
"The given checkpoint is invalid. Possible causes might include having written an event to the projection's managed stream. The bad checkpoint: {0}",
tag.ToString()));
}
}
public override CheckpointTag AdjustTag(CheckpointTag tag)
{
if (tag.Phase < Phase)
{
return(tag);
}
if (tag.Phase > Phase)
{
throw new ArgumentException(
string.Format("Invalid checkpoint tag phase. Expected less or equal to: {0} Was: {1}", Phase, tag.Phase), "tag");
}
if (tag.Mode_ == CheckpointTag.Mode.MultiStream)
{
int p;
return(CheckpointTag.FromStreamPositions(
tag.Phase, _streams.ToDictionary(v => v, v => tag.Streams.TryGetValue(v, out p) ? p : -1)));
}
switch (tag.Mode_)
{
case CheckpointTag.Mode.EventTypeIndex:
throw new NotSupportedException(
"Conversion from EventTypeIndex to MultiStream position tag is not supported");
case CheckpointTag.Mode.Stream:
int p;
return(CheckpointTag.FromStreamPositions(
tag.Phase, _streams.ToDictionary(v => v, v => tag.Streams.TryGetValue(v, out p) ? p : -1)));
case CheckpointTag.Mode.PreparePosition:
throw new NotSupportedException(
"Conversion from PreparePosition to MultiStream position tag is not supported");
case CheckpointTag.Mode.Position:
throw new NotSupportedException(
"Conversion from Position to MultiStream position tag is not supported");
default:
throw new Exception();
}
}
public MultiStreamReaderEventDistributionPoint(
IPublisher publisher, Guid distibutionPointCorrelationId, string[] streams,
Dictionary <string, int> fromPositions, bool resolveLinkTos)
: base(publisher, distibutionPointCorrelationId)
{
if (streams == null)
{
throw new ArgumentNullException("streams");
}
if (streams.Length == 0)
{
throw new ArgumentException("streams");
}
_streams = new HashSet <string>(streams);
var positions = CheckpointTag.FromStreamPositions(fromPositions);
ValidateTag(positions);
_fromPositions = positions;
_resolveLinkTos = resolveLinkTos;
foreach (var stream in streams)
{
_preparePositions.Add(stream, null);
}
}
public override CheckpointTag MakeZeroCheckpointTag()
{
return(CheckpointTag.FromStreamPositions(Phase, _streams.ToDictionary(v => v, v => ExpectedVersion.NoStream)));
}