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LEVELUP 2015 - Enterprise software schaalbaar m...
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Michiel Overeem
November 26, 2015
Technology
0
260
LEVELUP 2015 - Enterprise software schaalbaar maken met Service Fabric
hoe AFAS zijn next gen ERP platform ontwikkelt
Michiel Overeem
November 26, 2015
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Transcript
Enterprise software schaalbaar maken met Service Fabric hoe AFAS zijn
next gen ERP platform ontwikkelt
360+ medewerkers (4 locaties) 10.000 klanten (bedrijven) 1.500.000 gebruikers 80
miljoen euro omzet (2014) AFAS Software
AFAS Profit Maandelijks 1.500.000 loonstroken HRM, CRM, financieel, order management,
project management, workflow, ...
AFAS Online 1780 cores, 25 TB RAM, 180 TB SSD
storage 10.000 concurrent RDP gebruikers 200.000 unieke gebruikers per maand 1.500.000 API calls per dag
Software kun je definiëren in plaats van programmeren.
Modelleer het bedrijf met zijn processen
Sla het model op in een definitie
Lees de definitie in een generator
Lever de resulterende applicatie uit
None
client command-systeem query-systeem event bus
Command public class CreateArticleCommand : Command { public Guid ArticleId
{ get; set; } public string Description { get; set; } public decimal Price { get; set; } } Event public class ArticleCreatedEvent : Event { public Guid ArticleId { get; set; } public string Description { get; set; } public decimal Price { get; set; } } Query public class GetArticleQuery : Query { public Guid ArticleId { get; set; } }
client query-systeem event bus command-systeem
AggregateRoot - Handle public void Handle(CreateArticleCommand command) { if(command.Price <=
0) { throw new CommandValidationException("Price should be greater than 0."); } if(string.IsNullOrEmpty(command.Description) || command.Description.Length > 20) { throw new CommandValidationException("Description is mandatory, " + "and cannot be longer than 20 characters."); } RaiseEvent(new ArticleCreatedEvent(command.ArticleId, command.Description, command.Price)); } AggregateRoot - Apply private void Apply(ArticleCreatedEvent @event) { _saleable = true; _price = @event.Price; }
client query-systeem event bus
CommandHandler private void Handle(CreateArticleCommand command) { Repository.ExecuteOn<ArticleAggregateRoot>(command.ArticleId, command); } AggregateRootRepository
- InMemory public virtual async Task ExecuteOn<T>(Guid aggregateId, Command command) where T: AggregateRoot { T aggregateRoot = LoadAggregateRoot<T>(aggregateId); aggregateRoot.Handle(command); await SaveAndDispatchEvents(aggregateRoot); }
1 3 7 4 8 2 8 6 5 1
3 1 4 6 2 7 6 5 4 8 3 7 2 5
“Actors are isolated, single-threaded components that encapsulate both state and
behavior.”
1 3 7 4 8 2 8 6 5 1
3 1 4 6 2 7 6 5 4 8 3 7 2 5
service systeem reliable collections communicatie actors service API service systeem
reliable collections communicatie service API
client query-systeem event bus
AggregateRootRepository - InMemory public virtual async Task ExecuteOn<T>(Guid aggregateId, Command
command) where T: AggregateRoot { T aggregateRoot = LoadAggregateRoot<T>(aggregateId); aggregateRoot.Handle(command); await SaveAndDispatchEvents(aggregateRoot); } AggregateRootRepository – Service Fabric public override async Task ExecuteOn<T>(Guid aggregateId, Command command) { var actor = ActorProxy.Create<IAggregateRootActor>(new ActorId(aggregateId), "App"); await actor.ExecuteOn(typeof(T).AssemblyQualifiedName, command.ToJson()); }
AggregateRootActor public async Task ExecuteOn(string aggregateRootType, string commandJson) { var
aggregateRoot = LoadAggregateRoot(aggregateRootType); var command = Deserialize(commandJson); aggregateRoot.Handle(command); await SaveAndDispatchEvents(aggregateRoot); }
één Stateless Actor Type Range partitions voor load balancing Actor
Id is het Id van de AggregateRoot
client command-systeem event bus query-systeem
QueryModelBuilder private void Handle(ArticleCreatedEvent @event) { Repository.Add(@event.ArticleId, new JObject( new
JProperty("Article", @event.ArticleId), new JProperty("Description", @event.Description), new JProperty("Price", @event.Price))); } QueryHandler private JObject Handle(GetArticleQuery query) { return Repository.Get(query.ArticleId); }
client command-systeem event bus
client command-systeem event bus
QueryModelBuilder Service public async Task Handle(string eventJson) { var queue
= await StateManager.GetOrAddAsync<IReliableQueue<string>>("qmbQueue"); using(ITransaction tx = StateManager.CreateTransaction()) { await queue.EnqueueAsync(tx, eventJson); await tx.CommitAsync(); } }
QueryModelBuilder Service protected override async Task RunAsync(CancellationToken cancellationToken) { var
queue = await StateManager.GetOrAddAsync<IReliableQueue<string>>("qmbQueue"); while(true) { using(ITransaction tx = StateManager.CreateTransaction()) { ConditionalResult<string> dequeueReply = await queue.TryDequeueAsync(tx); if(dequeueReply.HasValue) { string message = dequeueReply.Value; _queryModelBuilder.Handle(Deserialize(message)); await tx.CommitAsync(); } } } }
één Stateful Service Type Named partitions voor load balancing Partition
name is het type van de QueryModelBuilder
None
Voor vragen, discussie etc:
[email protected]
- @michielovereem - https://linkedin.com/in/movereem CQRS
+ Service Fabric • Sluit ontzettend goed aan bij onze architectuur. • Betrouwbaarheid, schaalbaarheid en onderhoudsgemak. • Portable cloud hosting is mogelijk. https://github.com/AFASSoftware/CQRS-Microservices