public static Snapshot ToSnapshot(this IAggregateRoot aggregate)
{
var data = JsonConvert.SerializeObject(aggregate, SerializerSettings);
var metadata = JsonConvert.SerializeObject(aggregate.GetType().AssemblyQualifiedName, SerializerSettings);
return(new Snapshot(Guid.NewGuid(), aggregate.Id, aggregate.GetType().Name, aggregate.Version, data, metadata, DateTime.Now));
}
private bool TryGetFromSnapshot(string aggregateRootId, Type aggregateRootType, out IAggregateRoot aggregateRoot)
{
aggregateRoot = _aggregateSnapshotter.RestoreFromSnapshot(aggregateRootType, aggregateRootId);
if (aggregateRoot == null)
{
return(false);
}
if (aggregateRoot.GetType() != aggregateRootType || aggregateRoot.UniqueId != aggregateRootId)
{
throw new Exception(string.Format("AggregateRoot recovery from snapshot is invalid as the aggregateRootType or aggregateRootId is not matched. Snapshot: [aggregateRootType:{0},aggregateRootId:{1}], expected: [aggregateRootType:{2},aggregateRootId:{3}]",
aggregateRoot.GetType(),
aggregateRoot.UniqueId,
aggregateRootType,
aggregateRootId));
}
var aggregateRootTypeName = _typeNameProvider.GetTypeName(aggregateRootType);
var eventStreamsAfterSnapshot = _eventStore.QueryAggregateEvents(aggregateRootId, aggregateRootTypeName, aggregateRoot.Version + 1, int.MaxValue);
aggregateRoot.ReplayEvents(eventStreamsAfterSnapshot);
return(true);
}
public async Task <int> Save(IAggregateRoot aggregateRoot)
{
var dt = new DataTable();
dt.Columns.Add("Data", typeof(string));
foreach (var e in aggregateRoot.GetEvents())
{
dt.Rows.Add(e.Serialize());
}
using (var connection = new SqlConnection(_connectionString))
{
var argumentObject = new
{
AggregateID = aggregateRoot.Id,
Name = StreamName(aggregateRoot.GetType(), aggregateRoot.Id),
Type = aggregateRoot.GetType().AssemblyQualifiedName,
aggregateRoot.Version,
Batch = dt.AsTableValuedParameter("EventValueType")
};
return(await connection.ExecuteAsync("Event_Ins", argumentObject, commandType : CommandType.StoredProcedure));
}
}
private IAggregateSnapshot BuildSnapshotFromAggregate(IAggregateRoot aggregate)
{
var aggregateTypeName = aggregate.GetType().Name.Substring(aggregate.GetType().Name.LastIndexOf(".") + 1);
var snapshotTypeName = $"ProgramaPontos.Domain.Snapshots.{aggregateTypeName}Snapshot, ProgramaPontos.Domain";
var snapshotType = Type.GetType(snapshotTypeName);
return((IAggregateSnapshot)Activator.CreateInstance(snapshotType, aggregate));
}
public Aggregate(string identifier, Version expectedVersion, IAggregateRoot root)
{
this.Identifier = identifier ?? throw new ArgumentNullException(nameof(identifier));
this.ExpectedVersion = expectedVersion;
this.Root = root ?? throw new ArgumentNullException(nameof(root));
this.RootType = root.GetType().Name;
}
/// <summary>
/// Registers the specified aggregate.
/// </summary>
/// <param name="aggregate">The aggregate.</param>
/// <exception cref="System.ArgumentNullException">Aggregate null exception.</exception>
public virtual void Register(IAggregateRoot aggregate)
{
if (aggregate == null)
{
throw new ArgumentNullException("aggregate");
}
_registered = aggregate;
// Get instance methods named Apply with one parameter returning void
var applyMethods = aggregate.GetType()
.GetMethods(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance)
.Where(m => m.Name == "Apply" && m.GetParameters().Length == 1 && m.ReturnType == typeof(void))
.Select(
m => new
{
Method = m,
MessageType = m.GetParameters().Single().ParameterType
});
foreach (var apply in applyMethods)
{
var applyMethod = apply.Method;
_handlers.Add(apply.MessageType, m => applyMethod.Invoke(aggregate, new[] { m }));
}
}
private static void UpdateStream(IAggregateRoot stream, Guid commandId)
{
var notCommited = stream.NotCommitedChanges().ToList();
if (!notCommited.Any())
{
return;
}
var versionCnt = stream.Metadata.Version;
foreach (var bEvent in notCommited)
{
var aggregateType = stream.GetType().FullName;
var new_version = ++versionCnt;
bEvent.EventId = $"{stream.Metadata.AggregateId}_{new_version}";
bEvent.Metadata = new SourcedEventMetadata
{
Version = new_version,
CommandId = commandId,
AggregateId = stream.Metadata.AggregateId,
AggregateType = aggregateType,
Date = DateTime.UtcNow
};
}
}
/// <summary>
/// Saves the specified aggregate.
/// </summary>
/// <param name="aggregate">The aggregate.</param>
/// <param name="uncommitedEvents">The uncommited events.</param>
/// <param name="commitId">The commit id.</param>
/// <param name="updateHeaders">The update headers.</param>
/// <exception cref="ProCenter.Infrastructure.EventStore.ConflictingCommandException"></exception>
/// <exception cref="ProCenter.Infrastructure.EventStore.PersistenceException"></exception>
public virtual void Save(IAggregateRoot aggregate, IEnumerable <IDomainEvent> uncommitedEvents, Guid commitId, Action <IDictionary <string, object> > updateHeaders)
{
var headers = PrepareHeaders(aggregate, updateHeaders);
var eventStore = _eventStoreFactory.Build(aggregate.GetType());
while (true)
{
var stream = PrepareStream(eventStore, aggregate, headers, uncommitedEvents);
var commitEventCount = stream.CommittedEvents.Count;
try
{
stream.CommitChanges(commitId);
return;
}
catch (DuplicateCommitException)
{
stream.ClearChanges();
return;
}
catch (ConcurrencyException e)
{
if (this.ThrowOnConflict(stream, commitEventCount))
{
throw new ConflictingCommandException(e.Message, e);
}
stream.ClearChanges();
}
catch (StorageException e)
{
throw new PersistenceException(e.Message, e);
}
}
}
public void Save(IAggregateRoot aggregateRoot)
{
var set = _cache.GetOrAdd(aggregateRoot.GetType(), () => new HashSet <IAggregateRoot>());
if (!set.Add(aggregateRoot))
{
return;
}
var eventPublisher = aggregateRoot as IEventPublisher;
if (eventPublisher == null)
{
return;
}
var events = eventPublisher.GetEvents();
if (events.IsEmpty())
{
return;
}
_eventBus.Publish(events);
}
private async Task<List<IEventMessageDraft>> CreateEventMessagesAsync(IAggregateRoot aggregate, IReadOnlyCollection<DomainAggregateEvent> events)
{
var messages = new List<IEventMessageDraft>();
Guid? aggregateClassId = entityTypeManager.TryGetClassInfoByClrType(aggregate.GetType())?.Id;
foreach (DomainAggregateEvent ev in events)
{
IEventMessageDraft message = await eventMessageFactory.CreateMessageAsync(ev);
if (aggregateClassId != null)
{
message.SetMetadata(BasicEventMetadataNames.AggregateClassId, aggregateClassId.Value.ToString());
}
if (aggregate is ITenantOwned tenantOwned)
{
message.SetMetadata(BasicEventMetadataNames.AggregateTenantId, tenantOwned.TenantId?.ToString());
}
if (message.Metadata.GetEventId() == null)
{
message.SetMetadata(BasicEventMetadataNames.EventId, Guid.NewGuid().ToString());
}
messages.Add(message);
}
return messages;
}
private MethodInfo FindApply(object eventMessage)
{
return((from methodInfo in _aggregateRoot.GetType().GetMethods(BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.Public)
from parameterInfo in methodInfo.GetParameters()
where parameterInfo.ParameterType == eventMessage.GetType() && methodInfo.Name.Contains("Handle")
select methodInfo).Single());
}
public bool Exists(IAggregateRoot aggregate)
{
if (aggregate == null)
{
return(false);
}
return(_memoryCache.TryGetValue(CacheKey(aggregate.GetType(), aggregate.Id), out object value));
}
public IAggregateRoot Set(IAggregateRoot aggregate)
{
if (aggregate == null)
{
return(null);
}
return(this.Set(aggregate.GetType(), aggregate.Id, aggregate));
}
public async Task AppendUncommittedEventsToNewStream([Frozen] IEventStoreConnection connection,
IAggregateRoot <TestAggregate> aggregateRoot, EventStoreRepository sut)
{
await sut.SaveAsync(aggregateRoot);
await connection.Received(1).AppendToStreamAsync($"{aggregateRoot.GetType().Name}-{aggregateRoot.Id}",
aggregateRoot.OriginalVersion, aggregateRoot.GetUncommittedEvents());
}
Task IUnitOfWorkRepository.PersistUpdateOfAsync(IAggregateRoot entity, IDbConnection dbConnection, IDbTransaction dbTransaction)
{
if (entity is TEntity == false)
{
throw new System.Exception($"Expecting {typeof(TEntity).Name} but {entity.GetType().Name}");
}
return(PersistUpdateOfAsync((TEntity)entity, dbConnection, dbTransaction));
}
public Task Save(IAggregateRoot aggregateRoot)
{
var events = aggregateRoot
.GetEvents()
.Select(ToEventData);
return(eventStoreConnection.AppendToStreamAsync(StreamName(aggregateRoot.GetType(), aggregateRoot.Id), aggregateRoot.Version, events));
}
public void Add(IAggregateRoot aggregateRoot)
{
Assertions.NotNull(aggregateRoot, "aggregateRoot");
var key = string.Concat(aggregateRoot.GetType().FullName, "@", aggregateRoot.Id);
_trackingAggregateRoots.TryAdd(key, aggregateRoot);
}
public void Add(IAggregateRoot aggregate)
{
if (aggregate == null || !aggregate.GetType().Equals(typeof(TAggregateRoot)))
{
throw new Exception($"类型不是{typeof(TAggregateRoot).Name}");
}
this.Add((TAggregateRoot)aggregate);
}
public SnapshotConfig GetConfiguration(IAggregateRoot aggregate)
{
if (entitySnapshotsConfigs.TryGetValue(aggregate.GetType(), out var config))
{
return(config);
}
return(defaultSnapshotConfig);
}
internal static AggregateSnapshot MakeSnapshot(this IAggregateRoot aggregate)
{
return(new AggregateSnapshot
{
AggregateId = aggregate.Id,
AggregateType = aggregate.GetType(),
Version = aggregate.Version,
State = aggregate.State,
});
}
private DomainEventStreamMessage CreateMessage(IAggregateRoot aggregateRoot)
{
return new DomainEventStreamMessage(
ObjectId.GenerateNewStringId(),
aggregateRoot.UniqueId,
aggregateRoot.Version + 1,
aggregateRoot.GetType().FullName,
aggregateRoot.GetChanges(),
new Dictionary<string, string>());
}
public void Delete(IAggregateRoot aggregateRoot)
{
HashSet <IAggregateRoot> set;
if (!_cache.TryGetValue(aggregateRoot.GetType(), out set))
{
return;
}
set.RemoveWhere(p => p.Id.GetHashCode() == aggregateRoot.Id.GetHashCode());
}
public async Task TakeAndSaveAsync(IAggregateRoot aggregate)
{
var snapshot = aggregate.ToSnapshot();
string insertScript = EventRepositoryScriptsAsStrings.InsertSnapshot();
await _databaseProvider.ExecuteAsync(insertScript, snapshot);
Log.Information($"Snapshot for aggregate {aggregate.GetType().Name} has been created from version {aggregate.Version}");
}
private DomainEventStreamMessage CreateMessage(IAggregateRoot aggregateRoot)
{
return(new DomainEventStreamMessage(
ObjectId.GenerateNewStringId(),
aggregateRoot.UniqueId,
aggregateRoot.Version + 1,
aggregateRoot.GetType().FullName,
aggregateRoot.GetChanges(),
new Dictionary <string, string>()));
}
public void Handle(IAggregateRoot root, IDomainEvent ev)
{
MethodInvoker invoker;
if (!_handlers.TryGetValue(ev.GetType(), out invoker))
{
throw new InvalidOperationException(string.Format("Apply method for event [{0}] wasn't resolved in [{1}]", ev.GetType().Name, root.GetType().Name));
}
invoker.Invoke(root, new object[] {ev});
}
private DomainEventStream BuildDomainEventStream(IAggregateRoot aggregateRoot, IEnumerable <IDomainEvent> changedEvents, ProcessingCommand processingCommand)
{
return(new DomainEventStream(
processingCommand.Message.Id,
aggregateRoot.UniqueId,
_aggregateRootTypeProvider.GetTypeCode(aggregateRoot.GetType()),
aggregateRoot.Version + 1,
DateTime.Now,
changedEvents,
processingCommand.Items));
}
public Snapshot CreateSnapshot(IAggregateRoot aggregateRoot)
{
if (aggregateRoot == null)
{
throw new ArgumentNullException("aggregateRoot");
}
var payload = _binarySerializer.Serialize(aggregateRoot);
var aggregateRootTypeCode = _aggregateRootTypeCodeProvider.GetTypeCode(aggregateRoot.GetType());
return(new Snapshot(aggregateRootTypeCode, aggregateRoot.UniqueId, aggregateRoot.Version, payload, DateTime.Now));
}
public Snapshot CreateSnapshot(IAggregateRoot aggregateRoot)
{
if (aggregateRoot == null)
{
throw new ArgumentNullException("aggregateRoot");
}
var payload = _binarySerializer.Serialize(aggregateRoot);
var aggregateRootTypeCode = _aggregateRootTypeCodeProvider.GetTypeCode(aggregateRoot.GetType());
return new Snapshot(aggregateRootTypeCode, aggregateRoot.UniqueId, aggregateRoot.Version, payload, DateTime.Now);
}
private static Dictionary <string, object> PrepareHeaders(IAggregateRoot aggregate, Action <IDictionary <string, object> > updateHeaders)
{
var headers = new Dictionary <string, object> ();
headers[AggregateTypeHeader] = aggregate.GetType().FullName;
if (updateHeaders != null)
{
updateHeaders(headers);
}
return(headers);
}
public async Task TakeSnapshotSync(IAggregateRoot aggregate)
{
if (!(aggregate is ISnapshotable))
{
return;
}
var takeSnapshotMethod = aggregate.GetType().GetMethod("TakeSnapshot");
var memento = (Memento)takeSnapshotMethod.Invoke(aggregate, new object[] { });
await snapshotStore.Write(memento);
}
private bool TryGetFromSnapshot(string aggregateRootId, Type aggregateRootType, out IAggregateRoot aggregateRoot)
{
aggregateRoot = _aggregateSnapshotter.RestoreFromSnapshot(aggregateRootType, aggregateRootId);
if (aggregateRoot == null) return false;
if (aggregateRoot.GetType() != aggregateRootType || aggregateRoot.UniqueId != aggregateRootId)
{
throw new Exception(string.Format("AggregateRoot recovery from snapshot is invalid as the aggregateRootType or aggregateRootId is not matched. Snapshot: [aggregateRootType:{0},aggregateRootId:{1}], expected: [aggregateRootType:{2},aggregateRootId:{3}]",
aggregateRoot.GetType(),
aggregateRoot.UniqueId,
aggregateRootType,
aggregateRootId));
}
var aggregateRootTypeName = _typeNameProvider.GetTypeName(aggregateRootType);
var eventStreamsAfterSnapshot = _eventStore.QueryAggregateEvents(aggregateRootId, aggregateRootTypeName, aggregateRoot.Version + 1, int.MaxValue);
aggregateRoot.ReplayEvents(eventStreamsAfterSnapshot);
return true;
}
public IAggregateRoot Remove(IAggregateRoot aggregate)
{
if (aggregate == null)
{
return(null);
}
var key = this.CacheKey(aggregate.GetType(), aggregate.Id);
var result = this._memoryCache.Get <IAggregateRoot>(key);
this._memoryCache.Remove(key);
return(result);
}
private void PublishEvents(IAggregateRoot instance, IDomainNotification snapshotChange)
{
foreach (var evt in instance.UncommittedEvents.ToList())
{
var modelChange = NotificationExtensions.CreateNotification(instance.GetType(), evt);
this.changes.OnNext(modelChange);
}
if (snapshotChange != null)
{
this.changes.OnNext(snapshotChange);
}
}
public static bool ShouldMakeSnapshot(IAggregateRoot aggregate)
{
if (!IsSnapshotable(aggregate.GetType()))
{
return(false);
}
if (aggregate.Version != 0 && aggregate.Version % _snapshotInterval == 0)
{
return(true);
}
return(false);
}
internal static void Apply(IAggregateRoot root, IDomainEvent ev)
{
var rootType = root.GetType();
EventHandlerRegistry registry;
if (!_handlers.TryGetValue(rootType, out registry))
{
registry = new EventHandlerRegistry(ApplyMethodResolver.ResolveAll(rootType));
_handlers[rootType] = registry;
}
registry.Handle(root, ev);
//ResolveApplyMethodDelegate(root.GetType(), ev.GetType())(root, ev);
}
private static string CreateMessage(IAggregateRoot aggRoot, Guid originalVersion, Guid currentVersion)
{
var aggType = aggRoot.GetType().Name;
var msg = string.Format("The {0} you were trying to save has been updated by another user, you will have to start the editing process again to retry.", aggType);
msg += Environment.NewLine;
msg += Environment.NewLine;
msg += "Aggregate ID: " + aggRoot.AggregateId.ToString();
msg += Environment.NewLine;
msg += "Original Version: " + originalVersion.ToString();
msg += Environment.NewLine;
msg += "Current Version: " + currentVersion.ToString();
return msg;
}
public ConcurrencyException(IAggregateRoot aggregate)
: base(string.Format("Two different versions of aggregate root {0} of type '{1}' was detected in one DataSession",
((IEntity) aggregate).IdObject, aggregate.GetType().Name))
{
Aggregate = aggregate;
}
private void IncreaseAggregateVersion(IAggregateRoot aggregateRoot)
{
_increaseVersionMethodDict[aggregateRoot.GetType()](aggregateRoot);
}
private void HandleEvent(IAggregateRoot aggregateRoot, IDomainEvent evnt)
{
var handler = _eventHandlerProvider.GetInternalEventHandler(aggregateRoot.GetType(), evnt.GetType());
if (handler == null)
{
throw new ENodeException("Could not find event handler for [{0}] of [{1}]", evnt.GetType().FullName, aggregateRoot.GetType().FullName);
}
handler(aggregateRoot, evnt);
}
private void PublishEvents(IAggregateRoot instance, IDomainNotification snapshotChange)
{
foreach (var evt in instance.UncommittedEvents.ToList())
{
var modelChange = NotificationExtensions.CreateNotification(instance.GetType(), evt);
this.changes.OnNext(modelChange);
}
if (snapshotChange != null)
{
this.changes.OnNext(snapshotChange);
}
}
private EventStream CreateEventStream(IAggregateRoot aggregateRoot, ICommand command)
{
var uncommittedEvents = aggregateRoot.GetUncommittedEvents().ToList();
aggregateRoot.ClearUncommittedEvents();
var aggregateRootTypeCode = _aggregateRootTypeProvider.GetTypeCode(aggregateRoot.GetType());
foreach (var evnt in uncommittedEvents)
{
evnt.Version = aggregateRoot.Version + 1;
}
return new EventStream(
command.Id,
aggregateRoot.UniqueId,
aggregateRootTypeCode,
aggregateRoot.Version + 1,
DateTime.Now,
uncommittedEvents);
}
public ConcurrencyException(IAggregateRoot root, IDomainEvent conflictEvent)
: base(string.Format("Expected version of {0}({1}) to be {2} but got {3}."
, root.GetType().Name, root.Id, root.Version, conflictEvent.Version))
{
}
///<summary>
/// 将一个FisObject注册为Added
///</summary>
///<param name="entity">fisobject</param>
///<param name="repository">该FisObject类型的Repository对象</param>
public void RegisterAdded(IAggregateRoot entity, IUnitOfWorkRepository repository)
{
if (!this._added.ContainsKey(entity))
{
logger.DebugFormat(MsgRegisterAdded, entity.GetType(), entity.Key);
this._added.Add(entity, repository);
_execSeq.Add(entity);
}
}
