private void ReadAllFromDisk()
{
file.Position = ReadOffsets(Path.GetFileName(streamSource.GetLatestName(dataPath)));
while (true)
{
using (var reader = new BinaryReader(file, Encoding.UTF8, leaveOpen: true))
{
var itemPos = file.Position;
PersistedEvent persistedEvent;
try
{
persistedEvent = ReadPersistedEvent(reader);
eventsCount++;
}
catch (EndOfStreamException)
{
lastWriteSnapshotCount = eventsCount;
lastWriteSnapshotTime = DateTime.UtcNow;
return;
}
catch (Exception e)
{
log.WarnException("Error during initial events read, file corrupted", e);
if (options.AllowRecovery == false)
{
throw;
}
file.SetLength(itemPos);
log.Warn("Recovered from corrupted file by truncating file to last known good position: " + itemPos);
return;
}
switch (persistedEvent.State)
{
case EventState.Event:
case EventState.Snapshot:
idToPos.AddOrUpdate(persistedEvent.Id, s => new StreamInformation
{
LastPosition = itemPos,
StreamLength = 1
}, (s, information) => new StreamInformation
{
LastPosition = itemPos,
StreamLength = information.StreamLength + 1
});
break;
case EventState.Delete:
deleteCount++;
var streamInformation = new StreamInformation
{
LastPosition = Deleted,
StreamLength = 0
};
idToPos.AddOrUpdate(persistedEvent.Id, s => streamInformation, (s, information) =>
{
deleteCount += information.StreamLength;
return(streamInformation);
});
break;
default:
throw new ArgumentOutOfRangeException(persistedEvent.State.ToString());
}
}
}
}
