public async Task A_command_is_not_marked_as_applied_if_no_handler_is_registered()
{
// arrange
var order = CommandSchedulingTests.CreateOrder();
order.Apply(
new ChargeCreditCardOn
{
Amount = 10,
ChargeDate = Clock.Now().AddDays(10)
});
await orderRepository.Save(order);
// act
var schedulerWithNoHandlers = new SqlCommandScheduler(
new Configuration().UseSqlEventStore());
await schedulerWithNoHandlers.AdvanceClock(clockName, @by : TimeSpan.FromDays(20));
// assert
using (var db = new CommandSchedulerDbContext())
{
db.ScheduledCommands.Single(c => c.AggregateId == order.Id)
.AppliedTime
.Should()
.BeNull();
}
}
public override async Task Specific_scheduled_commands_can_be_triggered_directly_by_target_id()
{
// arrange
var target = new CommandTarget(Any.CamelCaseName());
await store.Put(target);
// act
await scheduler.Schedule(target.Id,
new TestCommand(),
Clock.Now().AddDays(2));
using (var db = new CommandSchedulerDbContext())
{
var aggregateId = target.Id.ToGuidV3();
var command = db.ScheduledCommands
.Single(c => c.AggregateId == aggregateId);
await Configuration.Current
.SchedulerClockTrigger()
.Trigger(command, new SchedulerAdvancedResult(), db);
}
//assert
target = await store.Get(target.Id);
target.CommandsEnacted.Should().HaveCount(1);
}
private void InitializeCommandScheduler()
{
using (var context = new CommandSchedulerDbContext(CommandSchedulerConnectionString))
{
new EventStoreDatabaseInitializer <CommandSchedulerDbContext>().InitializeDatabase(context);
}
}
public override async Task When_an_immediately_scheduled_command_depends_on_a_precondition_that_has_not_been_met_yet_then_there_is_not_initially_an_attempt_recorded()
{
// arrange
var targetId = Any.CamelCaseName();
var precondition = new EventHasBeenRecordedPrecondition(
Guid.NewGuid().ToString().ToETag(),
Guid.NewGuid());
// act
await scheduler.Schedule(targetId,
new CreateCommandTarget(targetId),
deliveryDependsOn : precondition);
// assert
using (var db = new CommandSchedulerDbContext())
{
var aggregateId = targetId.ToGuidV3();
var command = db.ScheduledCommands.Single(c => c.AggregateId == aggregateId);
command.AppliedTime
.Should()
.NotHaveValue();
command.Attempts
.Should()
.Be(0);
}
}
/// <summary>
/// Allows awaiting delivery of all commands that are currently due on the command scheduler.
/// </summary>
/// <param name="scheduler">The command scheduler.</param>
/// <param name="clockName">The name of the clock on which the commands are scheduled.</param>
/// <returns></returns>
public static async Task Done(
this ISchedulerClockTrigger scheduler,
string clockName = null)
{
clockName = clockName ?? SqlCommandScheduler.DefaultClockName;
for (var i = 0; i < 10; i++)
{
using (var db = new CommandSchedulerDbContext())
{
var due = db.ScheduledCommands
.Due()
.Where(c => c.Clock.Name == clockName);
if (!await due.AnyAsync())
{
return;
}
var commands = await due.ToArrayAsync();
foreach (var scheduledCommand in commands)
{
await scheduler.Trigger(
scheduledCommand,
new SchedulerAdvancedResult(),
db);
}
await Task.Delay(400);
}
}
}
public async Task Command_scheduler_database_contains_a_default_clock()
{
using (var db = new CommandSchedulerDbContext(CommandSchedulerConnectionString))
{
db.Clocks.Should().ContainSingle(c => c.Name == "default");
}
}
public override async Task When_triggering_specific_commands_then_the_result_can_be_used_to_evaluate_failures()
{
// arrange
var target = new CommandTarget(Any.CamelCaseName());
await store.Put(target);
var schedulerAdvancedResult = new SchedulerAdvancedResult();
// act
await scheduler.Schedule(target.Id,
new TestCommand(isValid : false),
Clock.Now().AddDays(2));
using (var db = new CommandSchedulerDbContext())
{
var aggregateId = target.Id.ToGuidV3();
var command = db.ScheduledCommands
.Single(c => c.AggregateId == aggregateId);
await Configuration.Current
.SchedulerClockTrigger()
.Trigger(command, schedulerAdvancedResult, db);
}
//assert
schedulerAdvancedResult
.FailedCommands
.Should()
.HaveCount(1);
}
/// <summary>
/// Deserializes a scheduled command from SQL storage and delivers it to the target.
/// </summary>
/// <param name="configuration">The configuration.</param>
/// <param name="serializedCommand">The serialized command.</param>
/// <param name="db">The command scheduler database context.</param>
public static async Task DeserializeAndDeliver(
this Configuration configuration,
ScheduledCommand serializedCommand,
CommandSchedulerDbContext db) =>
await DeserializeAndDeliver(
configuration.Container.Resolve<CommandSchedulerResolver>(),
serializedCommand,
db);
/// <summary>
/// Deserializes a scheduled command from SQL storage and delivers it to the target.
/// </summary>
/// <param name="configuration">The configuration.</param>
/// <param name="serializedCommand">The serialized command.</param>
/// <param name="db">The command scheduler database context.</param>
public static async Task DeserializeAndDeliver(
this Configuration configuration,
ScheduledCommand serializedCommand,
CommandSchedulerDbContext db) =>
await DeserializeAndDeliver(
configuration.Container.Resolve <CommandDelivererResolver>(),
serializedCommand,
db);
public EventStoreDbTest()
{
Logging.Configure();
SetConnectionStrings();
Command <Order> .AuthorizeDefault = (order, command) => true;
Command <CustomerAccount> .AuthorizeDefault = (order, command) => true;
lock (lockObj)
{
if (databasesInitialized)
{
return;
}
// TODO: (EventStoreDbTest) figure out a db cleanup story
//#if !DEBUG
// new EventStoreDbContext().Database.Delete();
// new OtherEventStoreDbContext().Database.Delete();
// new ReadModelDbContext().Database.Delete();
// new ReadModels1DbContext().Database.Delete();
// new ReadModels2DbContext().Database.Delete();
// new CommandSchedulerDbContext().Database.Delete();
//#endif
using (var eventStore = new EventStoreDbContext())
{
new EventStoreDatabaseInitializer <EventStoreDbContext>().InitializeDatabase(eventStore);
}
using (var db = new CommandSchedulerDbContext())
{
new CommandSchedulerDatabaseInitializer().InitializeDatabase(db);
}
using (var eventStore = new OtherEventStoreDbContext())
{
new EventStoreDatabaseInitializer <OtherEventStoreDbContext>().InitializeDatabase(eventStore);
}
using (var db = new ReadModelDbContext())
{
new ReadModelDatabaseInitializer <ReadModelDbContext>().InitializeDatabase(db);
}
using (var db = new ReadModels1DbContext())
{
new ReadModelDatabaseInitializer <ReadModels1DbContext>().InitializeDatabase(db);
}
using (var db = new ReadModels2DbContext())
{
new ReadModelDatabaseInitializer <ReadModels2DbContext>().InitializeDatabase(db);
}
databasesInitialized = true;
}
}
public static async Task Done(
this ISchedulerClockTrigger scheduler,
string clockName = null)
{
clockName = clockName ?? Sql.CommandScheduler.Clock.DefaultClockName;
using (var db = new CommandSchedulerDbContext())
{
var now = Clock.Latest(Clock.Current, db.Clocks.Single(c => c.Name == clockName)).Now();
await scheduler.AdvanceClock(clockName, now);
}
}
internal static async Task DeserializeAndDeliver(
CommandSchedulerResolver schedulerResolver,
ScheduledCommand serializedCommand,
CommandSchedulerDbContext db)
{
dynamic scheduler = schedulerResolver.ResolveSchedulerForAggregateTypeNamed(serializedCommand.AggregateType);
await Storage.DeserializeAndDeliverScheduledCommand(
serializedCommand,
scheduler);
serializedCommand.Attempts++;
await db.SaveChangesAsync();
}
private static async Task DeserializeAndDeliver(
CommandSchedulerResolver schedulerResolver,
ScheduledCommand serializedCommand,
CommandSchedulerDbContext db)
{
dynamic scheduler = schedulerResolver.ResolveSchedulerForAggregateTypeNamed(serializedCommand.AggregateType);
await Storage.DeserializeAndDeliverScheduledCommand(
serializedCommand,
scheduler);
serializedCommand.Attempts++;
await db.SaveChangesAsync();
}
private MigrationResult Migrate(CommandSchedulerDbContext ctx)
{
var sql = @"
delete from Scheduler.ScheduledCommand
where AppliedTime is not null and AppliedTime < {0}";
var numberOfRecords = ctx.Database.ExecuteSqlCommand(
sql,
cutoffDate);
return new MigrationResult
{
Log = $"Deleted {numberOfRecords} records\n{string.Format(sql, cutoffDate)}",
MigrationWasApplied = true
};
}
public override async Task When_a_command_is_scheduled_but_an_exception_is_thrown_in_a_handler_then_an_error_is_recorded()
{
// arrange
var target = new CommandTarget(Any.CamelCaseName());
await store.Put(target);
// act
await scheduler.Schedule(target.Id,
new TestCommand(isValid : false));
//assert
using (var db = new CommandSchedulerDbContext())
{
var aggregateId = target.Id.ToGuidV3();
var error = db.Errors.Single(e => e.ScheduledCommand.AggregateId == aggregateId);
error.Error.Should().Contain("CommandValidationException");
}
}
public static void ClassInitialize(TestContext context)
{
CommandSchedulerDbContext.NameOrConnectionString = @"Data Source=(localdb)\v11.0; Integrated Security=True; MultipleActiveResultSets=False; Initial Catalog=ItsCqrsTestsCommandScheduler";
Settings.Sources = new ISettingsSource[] { new ConfigDirectorySettings(@"c:\dev\.config") }.Concat(Settings.Sources);
settings = Settings.Get <ServiceBusSettings>();
settings.ConfigureQueue = queue => queue.AutoDeleteOnIdle = TimeSpan.FromHours(24);
#if !DEBUG
new CommandSchedulerDbContext().Database.Delete();
#endif
using (var readModels = new CommandSchedulerDbContext())
{
new CommandSchedulerDatabaseInitializer().InitializeDatabase(readModels);
}
Console.WriteLine(Environment.MachineName);
Console.WriteLine(new DirectoryInfo(@"c:\dev\.config").GetFiles().Select(f => f.FullName).ToLogString());
Settings.Sources = new ISettingsSource[] { new ConfigDirectorySettings(@"c:\dev\.config") }.Concat(Settings.Sources);
}
public override async Task When_a_clock_is_advanced_and_a_command_fails_to_be_deserialized_then_other_commands_are_still_applied()
{
var commandScheduler = Configuration.Current.CommandScheduler <CommandTarget>();
var failedTargetId = Any.CamelCaseName();
var successfulTargetId = Any.CamelCaseName();
await commandScheduler.Schedule(failedTargetId,
new CreateCommandTarget(failedTargetId),
Clock.Now().AddHours(1));
await commandScheduler.Schedule(successfulTargetId,
new CreateCommandTarget(successfulTargetId),
Clock.Now().AddHours(1.5));
using (var db = new CommandSchedulerDbContext())
{
var aggregateId = failedTargetId.ToGuidV3();
var command = db.ScheduledCommands.Single(c => c.AggregateId == aggregateId);
var commandBody = command.SerializedCommand.FromJsonTo <dynamic>();
commandBody.Command.CommandName = "not a command name";
command.SerializedCommand = commandBody.ToString();
db.SaveChanges();
}
// act
Action advanceClock = () => Configuration.Current
.SchedulerClockTrigger()
.AdvanceClock(clockName: clockName,
@by: TimeSpan.FromHours(2)).Wait();
// assert
advanceClock.ShouldNotThrow();
var successfulAggregate = await store.Get(successfulTargetId);
successfulAggregate.Should().NotBeNull();
}
public async Task When_a_scheduled_command_depends_on_an_event_that_never_arrives_it_is_eventually_abandoned()
{
VirtualClock.Start();
var container = Configuration.Current.Container;
var commandScheduler = container.Resolve<ICommandScheduler<Order>>();
var orderId = Any.Guid();
await orderRepository.Save(new Order(new CreateOrder(Any.FullName())
{
AggregateId = orderId
}));
var prerequisiteEvent = new CustomerAccount.Created
{
AggregateId = Any.Guid(),
ETag = Any.Guid().ToString()
};
await commandScheduler.Schedule(orderId,
new AddItem
{
ProductName = Any.Paragraph(3),
Price = 10m
},
deliveryDependsOn: prerequisiteEvent);
for (var i = 0; i < 7; i++)
{
VirtualClock.Current.AdvanceBy(TimeSpan.FromMinutes(90));
Console.WriteLine(
(await clockTrigger.Trigger(commands => commands.Due().Where(c => c.AggregateId == orderId))).ToLogString());
}
using (var db = new CommandSchedulerDbContext())
{
var command = db.ScheduledCommands.Single(c => c.AggregateId == orderId);
command.AppliedTime
.Should()
.BeNull();
command.Attempts
.Should()
.BeGreaterOrEqualTo(5);
command.FinalAttemptTime
.Should()
.NotBeNull();
}
}
public override async Task When_a_clock_is_set_on_a_command_then_it_takes_precedence_over_GetClockName()
{
// arrange
var clockName = Any.CamelCaseName();
var targetId = Any.CamelCaseName();
var command = new CreateCommandTarget(targetId);
var clock = new CommandScheduler.Clock
{
Name = clockName,
UtcNow = DateTimeOffset.Parse("2016-03-01 02:00:00 AM")
};
using (var commandScheduler = new CommandSchedulerDbContext())
{
commandScheduler.Clocks.Add(clock);
commandScheduler.SaveChanges();
}
var scheduledCommand = new ScheduledCommand<CommandTarget>(
targetId: targetId,
command: command,
dueTime: DateTimeOffset.Parse("2016-03-20 09:00:00 AM"))
{
Clock = clock
};
// act
await scheduler.Schedule(scheduledCommand);
await Configuration.Current.SchedulerClockTrigger()
.AdvanceClock(clockName, by: 30.Days());
//assert
var target = await store.Get(targetId);
target.Should().NotBeNull();
}
public async Task When_a_scheduler_assigned_negative_SequenceNumber_collides_then_it_retries_scheduling_with_a_new_SequenceNumber()
{
// arrange
var container = Configuration.Current.Container;
var commandScheduler = container.Resolve<ICommandScheduler<Order>>();
var initialSequenceNumber = -Any.PositiveInt();
var orderId = Any.Guid();
await commandScheduler.Schedule(new CommandScheduled<Order>
{
AggregateId = orderId,
Command = new Cancel(),
SequenceNumber = initialSequenceNumber,
DueTime = Clock.Now().AddYears(1)
});
var secondCommand = new CommandScheduled<Order>
{
AggregateId = orderId,
Command = new Cancel(),
SequenceNumber = initialSequenceNumber,
DueTime = Clock.Now().AddYears(1)
};
await commandScheduler.Schedule(secondCommand);
using (var db = new CommandSchedulerDbContext())
{
db.ScheduledCommands
.Count(c => c.AggregateId == orderId)
.Should()
.Be(2);
}
}
public async Task When_a_command_is_scheduled_but_the_event_that_triggered_it_was_not_successfully_written_then_the_command_is_not_applied()
{
VirtualClock.Start();
// create a customer account
var customer = new CustomerAccount(Any.Guid())
.Apply(new ChangeEmailAddress(Any.Email()));
await accountRepository.Save(customer);
var order = new Order(new CreateOrder(Any.FullName())
{
CustomerId = customer.Id
});
// act
// cancel the order but don't save it
order.Apply(new Cancel());
// assert
// verify that the customer did not receive the scheduled NotifyOrderCanceled command
customer = await accountRepository.GetLatest(customer.Id);
customer.Events().Last().Should().BeOfType<CustomerAccount.EmailAddressChanged>();
using (var db = new CommandSchedulerDbContext())
{
db.ScheduledCommands
.Where(c => c.AggregateId == customer.Id)
.Should()
.ContainSingle(c => c.AppliedTime == null &&
c.DueTime == null);
}
}
public async Task When_a_command_is_delivered_a_second_time_with_the_same_ETag_it_is_not_retried_afterward()
{
// arrange
var order = new Order(new CreateOrder(Any.FullName())
{
CustomerId = Any.Guid()
});
await orderRepository.Save(order);
var command = new AddItem
{
ProductName = Any.Word(),
Price = 10m,
ETag = Any.Guid().ToString()
};
var commandScheduler = Configuration.Current.Container.Resolve<ICommandScheduler<Order>>();
// act
await commandScheduler.Schedule(order.Id, command, Clock.Now().AddDays(1));
Thread.Sleep(1); // the sequence number is set from the current tick count, which every now and then produces a duplicate here
await commandScheduler.Schedule(order.Id, command, Clock.Now().AddDays(1));
await clockTrigger.Trigger(cmd => cmd.Where(c => c.AggregateId == order.Id));
// assert
order = await orderRepository.GetLatest(order.Id);
order.Balance.Should().Be(10);
using (var db = new CommandSchedulerDbContext())
{
db.ScheduledCommands
.Where(c => c.AggregateId == order.Id)
.Should()
.OnlyContain(c => c.AppliedTime != null);
db.Errors
.Where(c => c.ScheduledCommand.AggregateId == order.Id)
.Should()
.BeEmpty();
}
}
public async Task When_a_scheduled_command_fails_then_the_error_is_recorded()
{
// arrange
var order = CommandSchedulingTests.CreateOrder();
var innerRepository = new SqlEventSourcedRepository<Order>();
var saveCount = 0;
Configuration.Current
.Container
.Register<IEventSourcedRepository<Order>>(c => new FakeEventSourcedRepository<Order>(innerRepository)
{
OnSave = async o =>
{
if (saveCount > 0)
{
throw new Exception("oops!");
}
await innerRepository.Save(o);
saveCount++;
}
});
// act
order.Apply(new ShipOn(Clock.Now().AddDays(30)));
await Configuration.Current.Repository<Order>().Save(order);
await clockTrigger.AdvanceClock(clockName, TimeSpan.FromDays(31));
//assert
using (var db = new CommandSchedulerDbContext())
{
var error = db.Errors.Single(c => c.ScheduledCommand.AggregateId == order.Id).Error;
error.Should().Contain("oops!");
}
}
protected int GetScheduledCommandNumberOfAttempts(Guid aggregateId)
{
using (var db = new CommandSchedulerDbContext())
{
var scheduledCommand = db.ScheduledCommands.SingleOrDefault(c => c.AggregateId == aggregateId);
return scheduledCommand.IfNotNull()
.Then(c => c.Attempts)
.ElseDefault();
}
}
public override async Task When_a_clock_is_set_on_a_command_then_it_takes_precedence_over_GetClockName()
{
// arrange
var clockName = Any.CamelCaseName();
var create = new CreateOrder(Any.FullName())
{
AggregateId = Any.Guid()
};
var clock = new CommandScheduler.Clock
{
Name = clockName,
UtcNow = DateTimeOffset.Parse("2016-03-01 02:00:00 AM")
};
using (var commandScheduler = new CommandSchedulerDbContext())
{
commandScheduler.Clocks.Add(clock);
commandScheduler.SaveChanges();
}
var scheduledCommand = new ScheduledCommand<Order>(
aggregateId: create.AggregateId,
command: create,
dueTime: DateTimeOffset.Parse("2016-03-20 09:00:00 AM"))
{
Clock = clock
};
// act
var configuration = Configuration.Current;
await configuration.CommandScheduler<Order>().Schedule(scheduledCommand);
await configuration.SchedulerClockTrigger()
.AdvanceClock(clockName,
by: 30.Days());
//assert
var target = await configuration.Repository<Order>().GetLatest(create.AggregateId);
target.Should().NotBeNull();
}
public override async Task Specific_scheduled_commands_can_be_triggered_directly_by_target_id()
{
// arrange
var target = new CommandTarget(Any.CamelCaseName());
await store.Put(target);
// act
await scheduler.Schedule(target.Id,
new TestCommand(),
Clock.Now().AddDays(2));
using (var db = new CommandSchedulerDbContext())
{
var aggregateId = target.Id.ToGuidV3();
var command = db.ScheduledCommands
.Single(c => c.AggregateId == aggregateId);
await Configuration.Current
.SchedulerClockTrigger()
.Trigger(command, new SchedulerAdvancedResult(), db);
}
//assert
target = await store.Get(target.Id);
target.CommandsEnacted.Should().HaveCount(1);
}
public override async Task When_triggering_specific_commands_then_the_result_can_be_used_to_evaluate_failures()
{
// arrange
var target = new CommandTarget(Any.CamelCaseName());
await store.Put(target);
var schedulerAdvancedResult = new SchedulerAdvancedResult();
// act
await scheduler.Schedule(target.Id,
new TestCommand(isValid: false),
Clock.Now().AddDays(2));
using (var db = new CommandSchedulerDbContext())
{
var aggregateId = target.Id.ToGuidV3();
var command = db.ScheduledCommands
.Single(c => c.AggregateId == aggregateId);
await Configuration.Current
.SchedulerClockTrigger()
.Trigger(command, schedulerAdvancedResult, db);
}
//assert
schedulerAdvancedResult
.FailedCommands
.Should()
.HaveCount(1);
}
public async Task Trigger(
ScheduledCommand scheduled,
SchedulerAdvancedResult result,
CommandSchedulerDbContext db) =>
await deliver(scheduled, result, db);
public override async Task When_a_command_is_scheduled_but_an_exception_is_thrown_in_a_handler_then_an_error_is_recorded()
{
// arrange
var target = new CommandTarget(Any.CamelCaseName());
await store.Put(target);
// act
await scheduler.Schedule(target.Id,
new TestCommand(isValid: false));
//assert
using (var db = new CommandSchedulerDbContext())
{
var aggregateId = target.Id.ToGuidV3();
var error = db.Errors.Single(e => e.ScheduledCommand.AggregateId == aggregateId);
error.Error.Should().Contain("CommandValidationException");
}
}
public override async Task When_an_immediately_scheduled_command_depends_on_a_precondition_that_has_not_been_met_yet_then_there_is_not_initially_an_attempt_recorded()
{
// arrange
var targetId = Any.CamelCaseName();
var precondition = new EventHasBeenRecordedPrecondition(
Guid.NewGuid().ToString().ToETag(),
Guid.NewGuid());
// act
await scheduler.Schedule(targetId,
new CreateCommandTarget(targetId),
deliveryDependsOn: precondition);
// assert
using (var db = new CommandSchedulerDbContext())
{
var aggregateId = targetId.ToGuidV3();
var command = db.ScheduledCommands.Single(c => c.AggregateId == aggregateId);
command.AppliedTime
.Should()
.NotHaveValue();
command.Attempts
.Should()
.Be(0);
}
}
public async Task UseSqlCommandScheduling_can_include_using_a_catchup_for_durability()
{
var configuration = new Configuration()
.UseSqlEventStore()
.UseSqlCommandScheduling(catchup => catchup.StartAtEventId = eventStoreDbTest.HighestEventId);
configuration.SqlCommandScheduler().GetClockName = e => clockName;
disposables.Add(configuration);
var aggregateIds = Enumerable.Range(1, 5).Select(_ => Any.Guid()).ToArray();
Events.Write(5, i => new CommandScheduled<Order>
{
Command = new CreateOrder(Any.FullName()),
AggregateId = aggregateIds[i - 1],
SequenceNumber = -DateTimeOffset.UtcNow.Ticks
});
await configuration.Container
.Resolve<ReadModelCatchup<CommandSchedulerDbContext>>()
.SingleBatchAsync();
using (var db = new CommandSchedulerDbContext())
{
var scheduledAggregateIds = db.ScheduledCommands
.Where(c => aggregateIds.Any(id => id == c.AggregateId))
.Select(c => c.AggregateId)
.ToArray();
scheduledAggregateIds.Should()
.BeEquivalentTo(aggregateIds);
}
}
public async Task When_a_command_is_non_durable_then_immediate_scheduling_does_not_result_in_a_command_scheduler_db_entry()
{
var commandScheduler = Configuration.Current.Container.Resolve<ICommandScheduler<CustomerAccount>>();
var reserverationService = new Mock<IReservationService>();
reserverationService.Setup(m => m.Reserve(It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<TimeSpan?>()))
.Returns(() => Task.FromResult(true));
Configuration.Current.ReservationService = reserverationService.Object;
var aggregateId = Any.Guid();
await accountRepository.Save(new CustomerAccount(aggregateId).Apply(new RequestNoSpam()));
await commandScheduler.Schedule(aggregateId, new RequestUserName
{
UserName = Any.Email()
});
using (var db = new CommandSchedulerDbContext())
{
var scheduledAggregateIds = db.ScheduledCommands
.Where(c => aggregateId == c.AggregateId)
.ToArray();
scheduledAggregateIds.Should()
.BeEmpty();
}
}
public override async Task When_a_clock_is_advanced_and_a_command_fails_to_be_deserialized_then_other_commands_are_still_applied()
{
var commandScheduler = Configuration.Current.CommandScheduler<Order>();
var failedAggregateId = Any.Guid();
var successfulAggregateId = Any.Guid();
await commandScheduler.Schedule(failedAggregateId,
new CreateOrder(Any.FullName()),
Clock.Now().AddHours(1));
await commandScheduler.Schedule(successfulAggregateId,
new CreateOrder(Any.FullName())
{
AggregateId = successfulAggregateId
},
Clock.Now().AddHours(1.5));
using (var db = new CommandSchedulerDbContext())
{
var command = db.ScheduledCommands.Single(c => c.AggregateId == failedAggregateId);
var commandBody = command.SerializedCommand.FromJsonTo<dynamic>();
commandBody.Command.CustomerId = "not a guid";
command.SerializedCommand = commandBody.ToString();
db.SaveChanges();
}
// act
Action advanceClock = () => clockTrigger.AdvanceClock(clockName: clockName,
@by: TimeSpan.FromHours(2)).Wait();
// assert
advanceClock.ShouldNotThrow();
var repository = Configuration.Current.Repository<Order>();
var successfulAggregate = await repository.GetLatest(successfulAggregateId);
successfulAggregate.Should().NotBeNull();
}
public async Task When_a_scheduled_command_fails_due_to_a_concurrency_exception_then_it_is_not_marked_as_applied()
{
// arrange
var order = CommandSchedulingTests.CreateOrder();
var ship = new Ship();
order.Apply(ship);
order.Apply(new ChargeCreditCardOn
{
Amount = 10,
ChargeDate = Clock.Now().AddDays(10)
});
await orderRepository.Save(order);
TriggerConcurrencyExceptionOnOrderCommands(order.Id);
// act
await clockTrigger.AdvanceClock(clockName, @by: TimeSpan.FromDays(20));
// assert
using (var db = new CommandSchedulerDbContext())
{
// make sure we actually triggered a concurrency exception
db.Errors
.Where(e => e.ScheduledCommand.AggregateId == order.Id)
.Should()
.Contain(e => e.Error.Contains("ConcurrencyException"));
var scheduledCommand = db.ScheduledCommands.Single(c => c.AggregateId == order.Id);
scheduledCommand.AppliedTime.Should().BeNull();
scheduledCommand.Attempts.Should().Be(1);
}
}
public async Task Trigger(ScheduledCommand scheduled, SchedulerAdvancedResult result, CommandSchedulerDbContext db)
{
await ClockTrigger.Trigger(scheduled, result, db);
}
public async Task Specific_scheduled_commands_can_be_triggered_directly_by_aggregate_id()
{
// arrange
var shipmentId = Any.AlphanumericString(8, 8);
var order = CommandSchedulingTests.CreateOrder();
order.Apply(new ShipOn(shipDate: Clock.Now().AddMonths(1).Date)
{
ShipmentId = shipmentId
});
await orderRepository.Save(order);
// act
await clockTrigger.Trigger(commands => commands.Where(cmd => cmd.AggregateId == order.Id));
//assert
order = await orderRepository.GetLatest(order.Id);
var lastEvent = order.Events().Last();
lastEvent.Should().BeOfType<Order.Shipped>();
order.ShipmentId
.Should()
.Be(shipmentId);
using (var db = new CommandSchedulerDbContext())
{
db.ScheduledCommands
.Where(c => c.AggregateId == order.Id)
.Should()
.OnlyContain(c => c.AppliedTime != null);
}
}
public async Task When_a_non_scheduler_assigned_negative_SequenceNumber_collides_then_it_is_ignores()
{
// arrange
var container = Configuration.Current.Container;
var commandScheduler = container.Resolve<ICommandScheduler<Order>>();
var db = new CommandSchedulerDbContext();
disposables.Add(db);
var initialSequenceNumber = Any.PositiveInt();
var orderId = Any.Guid();
await commandScheduler.Schedule(new CommandScheduled<Order>
{
AggregateId = orderId,
Command = new Cancel(),
SequenceNumber = initialSequenceNumber,
DueTime = Clock.Now().AddYears(1)
});
var secondCommand = new CommandScheduled<Order>
{
AggregateId = orderId,
Command = new Cancel(),
SequenceNumber = initialSequenceNumber,
DueTime = Clock.Now().AddYears(1)
};
Action again = () => commandScheduler.Schedule(secondCommand).Wait();
again.ShouldNotThrow<DbUpdateException>();
}
public async Task When_a_command_is_scheduled_but_an_exception_is_thrown_in_a_handler_then_an_error_is_recorded()
{
Configuration.Current.UseDependency(_ => new CustomerAccount.OrderEmailConfirmer
{
SendOrderConfirmationEmail = x => { throw new Exception("drat!"); }
});
// create a customer account
var customer = new CustomerAccount(Any.Guid())
.Apply(new ChangeEmailAddress(Any.Email()));
await accountRepository.Save(customer);
var order = new Order(new CreateOrder(Any.FullName())
{
CustomerId = customer.Id
});
await orderRepository.Save(order);
// act
order.Apply(new Cancel());
await orderRepository.Save(order);
await clockTrigger.AdvanceClock(clockName, TimeSpan.FromMinutes(1.2));
using (var db = new CommandSchedulerDbContext())
{
db.Errors
.Where(e => e.ScheduledCommand.AggregateId == customer.Id)
.Should()
.Contain(e => e.Error.Contains("drat!"));
}
}
public async Task When_a_constructor_commands_fails_with_a_ConcurrencyException_it_is_not_retried()
{
var commandScheduler = Configuration.Current.Container.Resolve<ICommandScheduler<Order>>();
var orderId = Any.Guid();
var customerName = Any.FullName();
await commandScheduler.Schedule(orderId, new CreateOrder(customerName)
{
AggregateId = orderId,
ETag = Any.Guid().ToString()
});
await commandScheduler.Schedule(orderId, new CreateOrder(customerName)
{
AggregateId = orderId
});
using (var db = new CommandSchedulerDbContext())
{
var commands = db.ScheduledCommands
.Where(c => c.AggregateId == orderId)
.OrderBy(c => c.CreatedTime)
.ToArray();
commands.Count().Should().Be(2);
commands.Last().FinalAttemptTime.Should().NotBeNull();
}
}
public async Task When_a_command_is_scheduled_but_the_aggregate_it_applies_to_is_not_found_then_the_command_is_retried()
{
// create and cancel an order for a nonexistent customer account
var customerId = Any.Guid();
Console.WriteLine(new { customerId });
var order = new Order(new CreateOrder(Any.FullName())
{
CustomerId = customerId
});
order.Apply(new Cancel());
await orderRepository.Save(order);
using (var db = new CommandSchedulerDbContext())
{
db.ScheduledCommands
.Where(c => c.AggregateId == customerId)
.Should()
.ContainSingle(c => c.AppliedTime == null);
}
// act
// now save the customer and advance the clock
await accountRepository.Save(new CustomerAccount(customerId).Apply(new ChangeEmailAddress(Any.Email())));
await clockTrigger.AdvanceClock(clockName, TimeSpan.FromMinutes(2));
using (var db = new CommandSchedulerDbContext())
{
db.ScheduledCommands
.Where(c => c.AggregateId == customerId)
.Should()
.ContainSingle(c => c.AppliedTime != null);
var customer = await accountRepository.GetLatest(customerId);
customer.Events()
.Last()
.Should().BeOfType<CustomerAccount.OrderCancelationConfirmationEmailSent>();
}
}
public async Task When_an_immediately_scheduled_command_depends_on_an_event_that_has_not_been_saved_yet_then_there_is_not_initially_a_concurrency_exception()
{
var container = Configuration.Current.Container;
var commandScheduler = container.Resolve<ICommandScheduler<Order>>();
var orderId = Any.Guid();
var customerName = Any.FullName();
var prerequisiteEvent = new CustomerAccount.Created
{
AggregateId = Any.Guid(),
ETag = Any.Guid().ToString()
};
var scheduledCommand = await commandScheduler.Schedule(orderId,
new CreateOrder(customerName)
{
AggregateId = orderId
},
deliveryDependsOn: prerequisiteEvent);
var order = await orderRepository.GetLatest(orderId);
order.Should().BeNull();
scheduledCommand.Result.Should().BeOfType<CommandScheduled>();
using (var db = new CommandSchedulerDbContext())
{
var command = db.ScheduledCommands.Single(c => c.AggregateId == orderId);
command.AppliedTime
.Should()
.BeNull();
command.Attempts
.Should()
.Be(0);
}
}
public override async Task When_a_constructor_command_fails_with_a_ConcurrencyException_it_is_not_retried()
{
var commandScheduler = Configuration.Current.CommandScheduler<Order>();
var orderId = Any.Guid();
var customerName = Any.FullName();
await commandScheduler.Schedule(orderId, new CreateOrder(customerName)
{
AggregateId = orderId
});
await commandScheduler.Schedule(orderId, new CreateOrder(customerName)
{
AggregateId = orderId
});
using (var db = new CommandSchedulerDbContext())
{
var commands = db.ScheduledCommands
.Where(c => c.AggregateId == orderId)
.OrderBy(c => c.CreatedTime)
.ToArray();
Console.WriteLine(commands.ToDiagnosticJson());
commands.Length.Should().Be(2);
commands
.Should()
.ContainSingle(c => c.FinalAttemptTime == null);
}
}
public override async Task When_a_clock_is_advanced_and_a_command_fails_to_be_deserialized_then_other_commands_are_still_applied()
{
var commandScheduler = Configuration.Current.CommandScheduler<CommandTarget>();
var failedTargetId = Any.CamelCaseName();
var successfulTargetId = Any.CamelCaseName();
await commandScheduler.Schedule(failedTargetId,
new CreateCommandTarget(failedTargetId),
Clock.Now().AddHours(1));
await commandScheduler.Schedule(successfulTargetId,
new CreateCommandTarget(successfulTargetId),
Clock.Now().AddHours(1.5));
using (var db = new CommandSchedulerDbContext())
{
var aggregateId = failedTargetId.ToGuidV3();
var command = db.ScheduledCommands.Single(c => c.AggregateId == aggregateId);
var commandBody = command.SerializedCommand.FromJsonTo<dynamic>();
commandBody.Command.CommandName = "not a command name";
command.SerializedCommand = commandBody.ToString();
db.SaveChanges();
}
// act
Action advanceClock = () => Configuration.Current
.SchedulerClockTrigger()
.AdvanceClock(clockName: clockName,
@by: TimeSpan.FromHours(2)).Wait();
// assert
advanceClock.ShouldNotThrow();
var successfulAggregate = await store.Get(successfulTargetId);
successfulAggregate.Should().NotBeNull();
}
public async Task Recursive_scheduling_is_supported_when_the_virtual_clock_is_advanced()
{
// arrange
using (VirtualClock.Start(DateTimeOffset.Parse("2014-10-08 06:52:10 AM -07:00")))
{
var scenario = CreateScenarioBuilder()
.AddEvents(new CustomerAccount.EmailAddressChanged
{
NewEmailAddress = Any.Email()
})
.Prepare();
// act
var account = (await scenario.GetLatestAsync <CustomerAccount>())
.Apply(new RequestSpam())
.Apply(new SendMarketingEmail());
await scenario.SaveAsync(account);
VirtualClock.Current.AdvanceBy(TimeSpan.FromDays((7 * 4) + 2));
await scenario.CommandSchedulerDone();
account = await scenario.GetLatestAsync <CustomerAccount>();
// assert
account.Events()
.OfType <CommandScheduled <CustomerAccount> >()
.Select(e => e.Timestamp.Date)
.Should()
.BeEquivalentTo(new[]
{
DateTime.Parse("2014-10-08"),
DateTime.Parse("2014-10-15"),
DateTime.Parse("2014-10-22"),
DateTime.Parse("2014-10-29"),
DateTime.Parse("2014-11-05")
});
account.Events()
.OfType <CustomerAccount.MarketingEmailSent>()
.Select(e => e.Timestamp.Date)
.Should()
.BeEquivalentTo(new[]
{
DateTime.Parse("2014-10-08"),
DateTime.Parse("2014-10-15"),
DateTime.Parse("2014-10-22"),
DateTime.Parse("2014-10-29"),
DateTime.Parse("2014-11-05")
});
account.Events()
.Last()
.Should()
.BeOfType <CommandScheduled <CustomerAccount> >();
if (this is ScenarioBuilderWithSqlEventStoreTests)
{
using (var db = new CommandSchedulerDbContext())
{
var scheduledCommands = db.ScheduledCommands
.Where(c => c.AggregateId == account.Id)
.ToArray();
// all but the last command (which didn't come due yet) should have been marked as applied
scheduledCommands
.Reverse()
.Skip(1)
.Should()
.OnlyContain(c => c.AppliedTime != null);
}
}
}
}
public async Task Immediately_scheduled_commands_triggered_by_a_scheduled_command_have_their_due_time_set_to_the_causative_command_clock()
{
VirtualClock.Start();
var aggregate = new CommandSchedulerTestAggregate();
var repository = Configuration.Current
.Repository<CommandSchedulerTestAggregate>();
await repository.Save(aggregate);
var scheduler = Configuration.Current.CommandScheduler<CommandSchedulerTestAggregate>();
var dueTime = Clock.Now().AddMinutes(5);
await scheduler.Schedule(
aggregate.Id,
dueTime: dueTime,
command: new CommandSchedulerTestAggregate.CommandThatSchedulesAnotherCommandImmediately
{
NextCommandAggregateId = aggregate.Id,
NextCommand = new CommandSchedulerTestAggregate.Command
{
CommandId = Any.CamelCaseName()
}
});
VirtualClock.Current.AdvanceBy(TimeSpan.FromDays(1));
using (var db = new CommandSchedulerDbContext())
{
foreach (var command in db.ScheduledCommands.Where(c => c.AggregateId == aggregate.Id))
{
command.AppliedTime
.IfNotNull()
.ThenDo(v => v.Should().BeCloseTo(dueTime, 10));
}
}
}