/// <summary>
/// See <see cref="IDssEventProcessorPlugin.ReadOrCreateEventStream(DateTime)"/>
/// </summary>
public void ReadOrCreateEventStream(DateTime date)
{
// We already have an event stream for the current day, so just use this
if (_eventStream != null && Span.IsIncluded(date))
{
return;
}
// We have reached the day boundary - save the current event stream and create a new one for the new day
if (_eventStream != null && !Span.IsIncluded(date))
{
SaveEventStreamToDb();
}
using (var scope = _serviceScopeFactory.CreateScope())
using (var dbContext = scope.ServiceProvider.GetRequiredService <IDigitalstromDbContext>())
{
var dbSceneEvents = dbContext.DsSceneEventDataSet.Where(x => x.Key == date).FirstOrDefault();
if (dbSceneEvents != null)
{
_eventStream = dbSceneEvents.EventStream;
}
else
{
_eventStream = new EventTimeSeriesStream <DssEvent, DssSceneEventSerializer>(new TimeSeriesSpan(date, date.AddDays(1), DigitalstromSceneEventData.MaxEventsPerDay));
}
}
}
public void TestEventTimeSeriesStreamIntSeries()
{
using var eventstream = new EventTimeSeriesStream <Tuple <DateTime, int>, EventValueSerializer <int> >(span);
var expectedEmpty = Enumerable.Range(0, count).SelectMany(x => new byte[] { 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 }).ToArray();
Assert.Equal(expectedEmpty, eventstream.ToByteArray());
eventstream.WriteEvent(new Tuple <DateTime, int>(begin.AddSeconds(3), 42));
var expected1Item = Enumerable.Range(0, count).SelectMany(x => x == 0 ? new byte[] { 0xb8, 0x0b, 0x00, 0x00, 0x2a, 0x00, 0x00, 0x00 } :
new byte[] { 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 }).ToArray();
Assert.Equal(expected1Item, eventstream.ToByteArray());
eventstream.WriteEvent(new Tuple <DateTime, int>(begin.AddSeconds(7), -1));
var expected2Item = Enumerable.Range(0, count).SelectMany(x => x == 0 ? new byte[] { 0xb8, 0x0b, 0x00, 0x00, 0x2a, 0x00, 0x00, 0x00 } :
x == 1 ? new byte[] { 0x58, 0x1b, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff } :
new byte[] { 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 }).ToArray();
Assert.Equal(expected2Item, eventstream.ToByteArray());
for (int i = 0; i < 8; i++)
{
eventstream.WriteEvent(new Tuple <DateTime, int>(begin.AddSeconds(7).AddMilliseconds(i + 1), -1));
}
var expected10Items = Enumerable.Range(0, count).SelectMany(x => x == 0 ? new byte[] { 0xb8, 0x0b, 0x00, 0x00, 0x2a, 0x00, 0x00, 0x00 } :
new byte[] { (byte)(0x57 + x), 0x1b, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff }).ToArray();
Assert.Equal(expected10Items, eventstream.ToByteArray());
}
public void TestEventTimeSeriesStreamIntValues(int value)
{
using var eventstream = new EventTimeSeriesStream <Tuple <DateTime, int>, EventValueSerializer <int> >(span);
for (int i = 0; i < count; i++)
{
eventstream.WriteEvent(new Tuple <DateTime, int>(begin.AddSeconds(7).AddMilliseconds(i + 1), value));
}
var bytes = eventstream.ToByteArray();
Assert.NotNull(bytes);
var neweventstream = EventTimeSeriesStream <Tuple <DateTime, int>, EventValueSerializer <int> > .FromByteArray(span, bytes !);
Assert.Equal(count, neweventstream.Count());
foreach (var item in neweventstream)
{
Assert.Equal(value, item.Item2);
}
}
