public async Task <Boolean> Save(AggregateRootWithEvents aggregateRoot, Int32 eventsPerRequest = 100)
{
var events = aggregateRoot.GetChanges();
String streamName = GetStreamId(aggregateRoot.GetType(), aggregateRoot.Id);
var encoding = new UTF8Encoding();
IEnumerable <EventData> data = events.Select(x => new EventData(
Uuid.NewUuid(),
x.GetType().Name,
encoding.GetBytes(JsonConvert.SerializeObject(x, _jsonSerializerSettings)),
System.Text.Json.JsonSerializer.SerializeToUtf8Bytes(new EventMeta
{
BodyType = x.GetType().AssemblyQualifiedName
})));
Int32 eventPosition = 0;
while (true)
{
var dataToSend = data.Skip(eventPosition).Take(eventsPerRequest).ToArray();
await _client.AppendToStreamAsync(streamName, StreamState.Any, dataToSend);
if (dataToSend.Length != eventsPerRequest)
{
break;
}
eventPosition += eventsPerRequest;
}
return(true);
}
protected T GetFirstEvent <T>(AggregateRootWithEvents root) where T : DomainEvent
{
IEnumerable <DomainEvent> events = root.GetChanges();
Assert.Single(events);
Assert.IsAssignableFrom <T>(events.First());
return((T)events.First());
}
public override async Task <bool> Save(AggregateRootWithEvents aggregateRoot)
{
if (aggregateRoot is DHCPv4RootScope == false)
{
return(await base.Save(aggregateRoot));
}
PseudoDHCPv4RootScope pseudoRootScope = new();
var events = aggregateRoot.GetChanges();
List <AggregateRootWithEvents> aggregatesToSave = new();
aggregatesToSave.Add(pseudoRootScope);
HashSet <Guid> scopesToDelete = new();
HashSet <Guid> leasesToDelete = new();
foreach (var item in events)
{
switch (item)
{
case DHCPv4ScopeAddedEvent e:
{
pseudoRootScope.AddScope(e.Instructions.Id);
var pseudoScope = new PseudoDHCPv4Scope(e.Instructions.Id);
pseudoScope.AddChange(e);
aggregatesToSave.Add(pseudoScope);
}
break;
case DHCPv4ScopeDeletedEvent e:
{
pseudoRootScope.RemoveScope(e.EntityId);
scopesToDelete.Add(e.EntityId);
}
break;
case EntityBasedDomainEvent e when
item is DHCPv4ScopePropertiesUpdatedEvent ||
item is DHCPv4ScopeNameUpdatedEvent ||
item is DHCPv4ScopeDescriptionUpdatedEvent ||
item is DHCPv4ScopeResolverUpdatedEvent ||
item is DHCPv4ScopeAddressPropertiesUpdatedEvent ||
item is DHCPv4ScopeParentUpdatedEvent ||
item is DHCPv4ScopeAddressesAreExhaustedEvent ||
item is DHCPv4ScopeSuspendedEvent ||
item is DHCPv4ScopeReactivedEvent:
{
var pseudoScope = new PseudoDHCPv4Scope(e.EntityId);
pseudoScope.AddChange(e);
aggregatesToSave.Add(pseudoScope);
}
break;
case DHCPv4LeaseCreatedEvent e:
{
pseudoRootScope.AddLease(e.EntityId);
var pseudoScope = new PseudoDHCPv4Lease(e.EntityId);
pseudoScope.AddChange(e);
aggregatesToSave.Add(pseudoScope);
}
break;
case DHCPv4LeaseRemovedEvent e:
{
pseudoRootScope.RemoveLease(e.EntityId);
leasesToDelete.Add(e.EntityId);
}
break;
case DHCPv4ScopeRelatedEvent e:
{
var pseudoLease = new PseudoDHCPv4Lease(e.EntityId);
pseudoLease.AddChange(e);
aggregatesToSave.Add(pseudoLease);
}
break;
default:
break;
}
}
foreach (var item in aggregatesToSave)
{
await EventStore.Save(item, 20);
if (item is PseudoDHCPv4Lease)
{
var propertyResolver = Provider.GetService <IDHCPv6ServerPropertiesResolver>();
await EventStore.ApplyMetaValuesForStream <PseudoDHCPv4Lease>(
item.Id,
new EventStoreStreamMetaValues(EventStoreStreamMetaValues.DoNotTruncate, propertyResolver.GetLeaseLifeTime()));
}
}
foreach (var item in scopesToDelete)
{
await EventStore.DeleteAggregateRoot <PseudoDHCPv4Scope>(item);
}
foreach (var item in leasesToDelete)
{
await EventStore.DeleteAggregateRoot <PseudoDHCPv4Lease>(item);
}
aggregateRoot.ClearChanges();
Boolean projectResult = await ReadStore.Project(events);
return(projectResult);
}
