public async Task Should_load_stored_snapshot()
{
//Arrange
PrepareDb();
var container = BuildAdoRepoServiceProvider();
var stream = Guid.NewGuid().ToString();
var snapshot = new TestSnapshot {
Prop1 = "aaa", Prop2 = "bbb"
};
var snapshotEnvelope = new SnapshotEnvelope(snapshot, 1, stream);
using (var scope = container.CreateScope())
{
//Act
var snapshotStore = scope.ServiceProvider.GetService <ISnapshotStore>();
await snapshotStore.StoreSnapshotAsync(snapshotEnvelope, CancellationToken.None);
var loadedSnapshotEnvelope = await snapshotStore.LoadSnapshotAsync(stream, CancellationToken.None);
//Assert
loadedSnapshotEnvelope.Should().NotBeNull();
loadedSnapshotEnvelope.Should().BeEquivalentTo(snapshotEnvelope);
}
}
public async Task StoreSnapshotAsync(SnapshotEnvelope snapshotEnvelope, CancellationToken cancellationToken = default)
{
var stopWatch = new Stopwatch();
stopWatch.Start();
var snapshotDescriptor = SerializeSnapshot(snapshotEnvelope.StreamId, snapshotEnvelope.Snapshot, snapshotEnvelope.AggregateVersion);
await _snapshotRepository.StoreSnapshotAsync(snapshotEnvelope.StreamId, snapshotDescriptor, cancellationToken);
stopWatch.Stop();
_logger.LogDebug("SnapshotStore.StoreSnapshotAsync for {Stream} took {ElapsedMilliseconds} ms", snapshotEnvelope.StreamId, stopWatch.ElapsedMilliseconds);
}
public void Execute(PersistSnapshotCommand <TSnapshot> command)
{
if (command.ProducedEventCount < _persistSnapshotPeriod)
{
return;
}
var snapshotMetadata = new SnapshotMetadata(command.PreviouslyDispatchedCommandIds);
var snapshotEnvelope = new SnapshotEnvelope <TSnapshot>(command.Snapshot, snapshotMetadata);
_snapshotDataContext.Persist(snapshotEnvelope);
}
