Entity framework core 使用EFCore持久性的自动多状态机不工作
我们正在使用Masstransit和automatonymous和InMemoryRepository来实现saga持久性。我们有大约3个状态机配置和工作完美。为了持久化,我们最近从InMemoryRepository更改为EFCore。这导致只有第一个配置的状态机工作正常。Rest所有状态机甚至都没有进入初始事件。需要帮助了解实现是否正确。以下是代码详细信息: masstransit状态机设置Entity framework core 使用EFCore持久性的自动多状态机不工作,entity-framework-core,state-machine,masstransit,saga,automatonymous,Entity Framework Core,State Machine,Masstransit,Saga,Automatonymous,我们正在使用Masstransit和automatonymous和InMemoryRepository来实现saga持久性。我们有大约3个状态机配置和工作完美。为了持久化,我们最近从InMemoryRepository更改为EFCore。这导致只有第一个配置的状态机工作正常。Rest所有状态机甚至都没有进入初始事件。需要帮助了解实现是否正确。以下是代码详细信息: masstransit状态机设置 services.AddMassTransit(x => {
services.AddMassTransit(x =>
{
x.AddBus(provider => MassTransit.Bus.Factory.CreateUsingRabbitMq(cfg =>
{
cfg.Host(hostUri, hst =>
{
hst.Username(appSettings.RabbitMQ.Username);
hst.Password(appSettings.RabbitMQ.Password);
});
cfg.ReceiveEndpoint("microservice-response", e =>
{
AddConsumers(e, provider);
e.ConfigureSaga<ServiceRequest1RegisterState>(provider);
e.ConfigureSaga<ServiceRequest1UpdateState>(provider);
e.ConfigureSaga<ServiceRequest1ApproveState>(provider);
});
}));
////x.AddSagaStateMachine<ServiceRequest1RegisterStateMachine, ServiceRequest1RegisterState>()
//// .InMemoryRepository();
////x.AddSagaStateMachine<ServiceRequest1UpdateStateMachine, ServiceRequest1UpdateState>()
//// .InMemoryRepository();
////x.AddSagaStateMachine<ServiceRequest1ApproveStateMachine, ServiceRequest1ApproveState>()
//// .InMemoryRepository();
x.AddSagaStateMachine<ServiceRequest1RegisterStateMachine, ServiceRequest1RegisterState>()
.EntityFrameworkRepository(r =>
{
r.ConcurrencyMode = ConcurrencyMode.Pessimistic; // or use Optimistic, which requires RowVersion
r.AddDbContext<DbContext, ServiceRequest1RegisterStateDbContext>((provider, builder) =>
{
builder.UseSqlServer(configuration.GetConnectionString("StateDBConnection"), m =>
{
m.MigrationsAssembly(Assembly.GetExecutingAssembly().GetName().Name);
m.MigrationsHistoryTable($"__{nameof(ServiceRequest1RegisterStateDbContext)}");
});
});
});
x.AddSagaStateMachine<ServiceRequest1UpdateStateMachine, ServiceRequest1UpdateState>()
.EntityFrameworkRepository(r =>
{
r.ConcurrencyMode = ConcurrencyMode.Pessimistic; // or use Optimistic, which requires RowVersion
r.AddDbContext<DbContext, ServiceRequest1UpdateStateDbContext>((provider, builder) =>
{
builder.UseSqlServer(configuration.GetConnectionString("StateDBConnection"), m =>
{
m.MigrationsAssembly(Assembly.GetExecutingAssembly().GetName().Name);
m.MigrationsHistoryTable($"__{nameof(ServiceRequest1UpdateStateDbContext)}");
});
});
});
x.AddSagaStateMachine<ServiceRequest1ApproveStateMachine, ServiceRequest1ApproveState>()
.EntityFrameworkRepository(r =>
{
r.ConcurrencyMode = ConcurrencyMode.Pessimistic; // or use Optimistic, which requires RowVersion
r.AddDbContext<DbContext, ServiceRequest1ApproveStateDbContext>((provider, builder) =>
{
builder.UseSqlServer(configuration.GetConnectionString("StateDBConnection"), m =>
{
m.MigrationsAssembly(Assembly.GetExecutingAssembly().GetName().Name);
m.MigrationsHistoryTable($"__{nameof(ServiceRequest1ApproveStateDbContext)}");
});
});
});
});
services.AddSingleton<IHostedService, MassTransitBusService>();
services.AddMassTransit(x=>
{
x、 AddBus(provider=>MassTransit.Bus.Factory.CreateUsingRabbitMq(cfg=>
{
主机(hostUri,hst=>
{
用户名(appSettings.RabbitMQ.Username);
密码(appSettings.RabbitMQ.Password);
});
ReceiveEndpoint(“微服务响应”,e=>
{
AddConsumers(e,提供者);
e、 配置SAGA(提供商);
e、 配置SAGA(提供商);
e、 配置SAGA(提供商);
});
}));
////x、 AddSagaStateMachine()
////.InMemoryRepository();
////x、 AddSagaStateMachine()
////.InMemoryRepository();
////x、 AddSagaStateMachine()
////.InMemoryRepository();
x、 AddSagaStateMachine()
.EntityFrameworkRepository(r=>
{
r、 ConcurrencyMode=ConcurrencyMode.悲观;//或使用乐观,这需要RowVersion
r、 AddDbContext((提供程序、生成器)=>
{
builder.UseSqlServer(configuration.GetConnectionString(“StateDBConnection”),m=>
{
m、 MigrationAssembly(Assembly.getExecutionGassembly().GetName().Name);
m、 MigrationHistoryTable($“{nameof(ServiceRequest1RegisterStateDbContext)}”);
});
});
});
x、 AddSagaStateMachine()
.EntityFrameworkRepository(r=>
{
r、 ConcurrencyMode=ConcurrencyMode.悲观;//或使用乐观,这需要RowVersion
r、 AddDbContext((提供程序、生成器)=>
{
builder.UseSqlServer(configuration.GetConnectionString(“StateDBConnection”),m=>
{
m、 MigrationAssembly(Assembly.getExecutionGassembly().GetName().Name);
m、 MigrationHistoryTable($“_{nameof(ServiceRequest1UpdateStatedContext)}”);
});
});
});
x、 AddSagaStateMachine()
.EntityFrameworkRepository(r=>
{
r、 ConcurrencyMode=ConcurrencyMode.悲观;//或使用乐观,这需要RowVersion
r、 AddDbContext((提供程序、生成器)=>
{
builder.UseSqlServer(configuration.GetConnectionString(“StateDBConnection”),m=>
{
m、 MigrationAssembly(Assembly.getExecutionGassembly().GetName().Name);
m、 MigrationHistoryTable($“_{nameof(ServiceRequest1ApprovedStateDBContext)}”);
});
});
});
});
services.AddSingleton();
对于所有3个状态机,DBContext如下所示
public class ServiceRequest1ApproveStateDbContext : SagaDbContext
{
public ServiceRequest1ApproveStateDbContext(DbContextOptions<ServiceRequest1ApproveStateDbContext> options)
: base(options)
{
}
/// <summary>
/// Gets the configurations.
/// </summary>
protected override IEnumerable<ISagaClassMap> Configurations
{
get { yield return new ServiceRequest1ApproveStateMap(); }
}
}
公共类serviceRequest1ApprovedStateDBContext:SagaDbContext
{
公共服务请求1ApproveStateDBContext(DbContextOptions选项)
:基本(选项)
{
}
///
///获取配置。
///
受保护的覆盖IEnumerable配置
{
获取{yield return new ServiceRequest1ApproveStateMap();}
}
}
下面是州地图
public class ServiceRequest1ApproveStateMap : SagaClassMap<ServiceRequest1ApproveState>
{
protected override void Configure(EntityTypeBuilder<ServiceRequest1ApproveState> entity, ModelBuilder model)
{
entity.Property(x => x.CurrentState).HasMaxLength(64);
entity.Property(x => x.Id);
entity.Property(x => x.ServiceId);
entity.Property(x => x.ReadyEventStatus);
}
}
公共类ServiceRequest1ApproveStateMap:SagaClassMap
{
受保护的覆盖无效配置(EntityTypeBuilder实体、ModelBuilder模型)
{
Property(x=>x.CurrentState).HasMaxLength(64);
entity.Property(x=>x.Id);
Property(x=>x.ServiceId);
Property(x=>x.ReadyEventStatus);
}
}
从上面的代码可以看出,只有ServiceRequest1RegisterStateMachine工作正常,其余的statemachines甚至一开始都不会进入。我可以确认迁移都是事先完成的,并且当只存在1个存储库配置时,这些状态机都可以单独正常工作,即,如果只有ServiceRequest1ApproveStateMachine的repo config,则此状态机可以正常工作。但是如果所有3个repo配置都存在,那么只有第一个有效。
我需要关于使用EFCore正确实现saga持久性的指导。我是否应该尝试使用masstransit docs()中提到的单个dbcontext实现,下面是我为确保statemachine按预期工作所做的更改。更改是基于注释中的@Chris建议完成的,尽管我们最初的状态机实现是基于sqlserver efcore持久化上的文档
services.AddDbContext<ServiceRequest1RegisterStateDbContext>(x =>
x.UseSqlServer(configuration.GetConnectionString("StateDBConnection")));
services.AddDbContext<ServiceRequest1UpdateStateDbContext>(x =>
x.UseSqlServer(configuration.GetConnectionString("StateDBConnection")));
services.AddDbContext<ServiceRequest1ApproveStateDbContext>(x =>
x.UseSqlServer(configuration.GetConnectionString("StateDBConnection")));
services.AddMassTransit(x =>
{
x.AddBus(provider => MassTransit.Bus.Factory.CreateUsingRabbitMq(cfg =>
{
cfg.Host(hostUri, hst =>
{
hst.Username(appSettings.RabbitMQ.Username);
hst.Password(appSettings.RabbitMQ.Password);
});
cfg.ReceiveEndpoint("microservice-response", e =>
{
AddConsumers(e, provider);
e.ConfigureSaga<ServiceRequest1RegisterState>(provider);
e.ConfigureSaga<ServiceRequest1UpdateState>(provider);
e.ConfigureSaga<ServiceRequest1ApproveState>(provider);
});
}));
////x.AddSagaStateMachine<ServiceRequest1RegisterStateMachine, ServiceRequest1RegisterState>()
//// .InMemoryRepository();
////x.AddSagaStateMachine<ServiceRequest1UpdateStateMachine, ServiceRequest1UpdateState>()
//// .InMemoryRepository();
////x.AddSagaStateMachine<ServiceRequest1ApproveStateMachine, ServiceRequest1ApproveState>()
//// .InMemoryRepository();
x.AddSagaStateMachine<ServiceRequest1RegisterStateMachine, ServiceRequest1RegisterState>()
.EntityFrameworkRepository(r =>
{
r.ConcurrencyMode = ConcurrencyMode.Pessimistic; // or use Optimistic, which requires RowVersion
r.ExistingDbContext<ServiceRequest1RegisterStateDbContext>();
});
x.AddSagaStateMachine<ServiceRequest1UpdateStateMachine, ServiceRequest1UpdateState>()
.EntityFrameworkRepository(r =>
{
r.ConcurrencyMode = ConcurrencyMode.Pessimistic; // or use Optimistic, which requires RowVersion
r.ExistingDbContext<ServiceRequest1UpdateStateDbContext>();
});
x.AddSagaStateMachine<ServiceRequest1ApproveStateMachine, ServiceRequest1ApproveState>()
.EntityFrameworkRepository(r =>
{
r.ConcurrencyMode = ConcurrencyMode.Pessimistic; // or use Optimistic, which requires RowVersion
r.ExistingDbContext<ServiceRequest1ApproveStateDbContext>();
});
});
services.AddSingleton<IHostedService, MassTransitBusService>();
services.AddDbContext(x=>
x、 使用SQLServer(configuration.GetConnectionString(“StateDBConnection”));
services.AddDbContext(x=>
x、 使用SQLServer(configuration.GetConnectionString(“StateDBConnection”));
services.AddDbContext(x=>
x、 使用SQLServer(configuration.GetConnectionString(“StateDBConnection”));
services.AddMassTransit(x=>
{
x、 AddBus(provider=>MassTransit.Bus.Factory.CreateUsingRabbitMq(cfg=>
{
主机(hostUri,hst=>
{
用户名(appSettings.RabbitMQ.Username);
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