public void FromScheduledEnvelope_generates_PendingScheduledCommand_correctly()
{
// Arrange
var random = new Random();
var processManager = new FakeProcessManager();
var messageId = Guid.NewGuid();
var correlationId = Guid.NewGuid();
var message = new FakeCommand
{
Int32Value = random.Next(),
StringValue = Guid.NewGuid().ToString(),
};
var scheduledEnvelope =
new ScheduledEnvelope(
new Envelope(messageId, message, correlationId: correlationId),
DateTime.Now.AddTicks(random.Next()));
var serializer = new JsonMessageSerializer();
// Act
var actual = PendingScheduledCommand.FromScheduledEnvelope(processManager, scheduledEnvelope, serializer);
// Assert
actual.ProcessManagerType.Should().Be(typeof(FakeProcessManager).FullName);
actual.ProcessManagerId.Should().Be(processManager.Id);
actual.MessageId.Should().Be(messageId);
actual.CorrelationId.Should().Be(correlationId);
actual.CommandJson.Should().Be(serializer.Serialize(message));
actual.ScheduledTimeUtc.Should().Be(scheduledEnvelope.ScheduledTimeUtc);
}
public async Task FlushCommands_sends_all_scheduled_commands_associated_with_specified_process_manager_sequentially()
{
// Arrange
var serializer = new JsonMessageSerializer();
var processManager = new FakeProcessManager();
var noiseProcessManager = new FakeProcessManager();
var random = new Random();
var fixture = new Fixture();
var scheduledEnvelopes = new List <ScheduledEnvelope>(
from command in new[]
{
new FakeCommand {
Int32Value = random.Next(), StringValue = fixture.Create <string>()
},
new FakeCommand {
Int32Value = random.Next(), StringValue = fixture.Create <string>()
},
new FakeCommand {
Int32Value = random.Next(), StringValue = fixture.Create <string>()
},
}
let envelope = new Envelope(Guid.NewGuid(), command, null, Guid.NewGuid(), null)
select new ScheduledEnvelope(envelope, DateTime.UtcNow.AddTicks(random.Next())));
using (var db = new ProcessManagerDbContext(_dbContextOptions))
{
db.PendingScheduledCommands.AddRange(
from scheduledEnvelope in scheduledEnvelopes
select PendingScheduledCommand.FromScheduledEnvelope(processManager, scheduledEnvelope, serializer));
db.PendingScheduledCommands.AddRange(
from scheduledEnvelope in new[]
{
new ScheduledEnvelope(new Envelope(new object()), DateTime.UtcNow),
new ScheduledEnvelope(new Envelope(new object()), DateTime.UtcNow),
new ScheduledEnvelope(new Envelope(new object()), DateTime.UtcNow),
}
select PendingScheduledCommand.FromScheduledEnvelope(noiseProcessManager, scheduledEnvelope, serializer));
await db.SaveChangesAsync();
}
var scheduledMessageBus = new ScheduledMessageBus();
var sut = new SqlCommandPublisher(
() => new ProcessManagerDbContext(_dbContextOptions),
serializer,
Mock.Of <IMessageBus>(),
scheduledMessageBus);
// Act
await sut.FlushCommands(processManager.Id, CancellationToken.None);
// Assert
scheduledMessageBus.Sent.Should().BeEquivalentTo(scheduledEnvelopes, opts => opts.WithStrictOrdering().RespectingRuntimeTypes());
}
public async Task given_message_bus_fails_FlushCommands_deletes_no_command()
{
// Arrange
var serializer = new JsonMessageSerializer();
var processManager = new FakeProcessManager();
var random = new Random();
var commands = new List <PendingCommand>(
from command in new[]
{
new FakeCommand {
Int32Value = random.Next(), StringValue = Guid.NewGuid().ToString()
},
new FakeCommand {
Int32Value = random.Next(), StringValue = Guid.NewGuid().ToString()
},
new FakeCommand {
Int32Value = random.Next(), StringValue = Guid.NewGuid().ToString()
},
}
let envelope = new Envelope(command)
select PendingCommand.FromEnvelope(processManager, envelope, serializer));
using (var db = new ProcessManagerDbContext(_dbContextOptions))
{
db.PendingCommands.AddRange(commands);
await db.SaveChangesAsync();
}
IMessageBus messageBus = Mock.Of <IMessageBus>();
var exception = new InvalidOperationException();
Mock.Get(messageBus)
.Setup(x => x.Send(It.IsAny <IEnumerable <Envelope> >(), It.IsAny <CancellationToken>()))
.ThrowsAsync(exception);
var sut = new SqlCommandPublisher(
() => new ProcessManagerDbContext(_dbContextOptions),
serializer,
messageBus,
Mock.Of <IScheduledMessageBus>());
// Act
Func <Task> action = () => sut.FlushCommands(processManager.Id, CancellationToken.None);
// Assert
action.Should().Throw <InvalidOperationException>().Which.Should().BeSameAs(exception);
using (var db = new ProcessManagerDbContext(_dbContextOptions))
{
IQueryable <PendingCommand> query = from c in db.PendingCommands
where c.ProcessManagerId == processManager.Id
select c;
List <PendingCommand> actual = await query.ToListAsync();
actual.Should().BeEquivalentTo(commands, opts => opts.RespectingRuntimeTypes());
}
}
public async Task FlushCommands_absorbs_exception_caused_by_that_some_pending_scheduled_command_already_deleted_since_loaded()
{
// Arrange
var scheduledMessageBus = new CompletableScheduledMessageBus();
var serializer = new JsonMessageSerializer();
var sut = new SqlCommandPublisher(
() => new ProcessManagerDbContext(_dbContextOptions),
serializer,
Mock.Of <IMessageBus>(),
scheduledMessageBus);
var processManager = new FakeProcessManager();
using (var db = new ProcessManagerDbContext(_dbContextOptions))
{
db.PendingScheduledCommands.AddRange(
from command in new[]
{
new FakeCommand(),
new FakeCommand(),
new FakeCommand(),
}
let envelope = new Envelope(command)
let scheduledEnvelope = new ScheduledEnvelope(envelope, DateTime.UtcNow)
select PendingScheduledCommand.FromScheduledEnvelope(processManager, scheduledEnvelope, serializer));
await db.SaveChangesAsync();
}
// Act
Func <Task> action = async() =>
{
Task flushTask = sut.FlushCommands(processManager.Id, CancellationToken.None);
using (var db = new ProcessManagerDbContext(_dbContextOptions))
{
List <PendingScheduledCommand> pendingScheduledCommands = await db
.PendingScheduledCommands
.Where(c => c.ProcessManagerId == processManager.Id)
.OrderByDescending(c => c.Id)
.Take(1)
.ToListAsync();
db.PendingScheduledCommands.RemoveRange(pendingScheduledCommands);
await db.SaveChangesAsync();
}
scheduledMessageBus.Complete();
await flushTask;
};
// Assert
action.Should().NotThrow();
}
public async Task FlushCommands_deletes_all_commands_associated_with_specified_process_manager()
{
// Arrange
var serializer = new JsonMessageSerializer();
var processManager = new FakeProcessManager();
var noiseProcessManager = new FakeProcessManager();
const int noiseCommandCount = 3;
using (var db = new ProcessManagerDbContext(_dbContextOptions))
{
var commands = new List <PendingCommand>(
from command in Enumerable.Repeat(new FakeCommand(), 3)
let envelope = new Envelope(command)
select PendingCommand.FromEnvelope(processManager, envelope, serializer));
commands.AddRange(
from command in Enumerable.Repeat(new FakeCommand(), noiseCommandCount)
let envelope = new Envelope(command)
select PendingCommand.FromEnvelope(noiseProcessManager, envelope, serializer));
var random = new Random();
db.PendingCommands.AddRange(
from command in commands
orderby random.Next()
select command);
await db.SaveChangesAsync();
}
var sut = new SqlCommandPublisher(
() => new ProcessManagerDbContext(_dbContextOptions),
serializer,
Mock.Of <IMessageBus>(),
Mock.Of <IScheduledMessageBus>());
// Act
await sut.FlushCommands(processManager.Id, CancellationToken.None);
// Assert
using (var db = new ProcessManagerDbContext(_dbContextOptions))
{
(await db.PendingCommands.AnyAsync(c => c.ProcessManagerId == processManager.Id)).Should().BeFalse();
(await db.PendingCommands.CountAsync(c => c.ProcessManagerId == noiseProcessManager.Id)).Should().Be(noiseCommandCount);
}
}
public async Task FindProcessManager_returns_null_if_process_manager_that_satisfies_predicate_not_found()
{
// Arrange
var sut = new SqlProcessManagerDataContext <FakeProcessManager>(
new FakeProcessManagerDbContext(_dbContextOptions),
new JsonMessageSerializer(),
Mock.Of <ICommandPublisher>());
using (sut)
{
Expression <Func <FakeProcessManager, bool> > predicate = x => x.Id == Guid.NewGuid();
// Act
FakeProcessManager actual = await sut.FindProcessManager(predicate, CancellationToken.None);
// Assert
actual.Should().BeNull();
}
}
public async Task EnqueueAll_publishes_all_pending_scheduled_commands_asynchronously()
{
// Arrange
var serializer = new JsonMessageSerializer();
using (var db = new ProcessManagerDbContext(_dbContextOptions))
{
for (int i = 0; i < 3; i++)
{
var processManager = new FakeProcessManager();
db.PendingScheduledCommands.AddRange(from command in Enumerable.Repeat(new FakeCommand(), 3)
let envelope = new Envelope(command)
let scheduledEnvelope = new ScheduledEnvelope(envelope, DateTime.UtcNow)
select PendingScheduledCommand.FromScheduledEnvelope(processManager, scheduledEnvelope, serializer));
}
await db.SaveChangesAsync();
}
var sut = new SqlCommandPublisher(
() => new ProcessManagerDbContext(_dbContextOptions),
serializer,
Mock.Of <IMessageBus>(),
Mock.Of <IScheduledMessageBus>());
// Act
sut.EnqueueAll(CancellationToken.None);
// Assert
using (var db = new ProcessManagerDbContext(_dbContextOptions))
{
int maximumRetryCount = 5;
var retryPolicy = new RetryPolicy <bool>(
maximumRetryCount,
new DelegatingTransientFaultDetectionStrategy <bool>(any => any == true),
new ConstantRetryIntervalStrategy(TimeSpan.FromSeconds(1.0)));
(await retryPolicy.Run(db.PendingScheduledCommands.AnyAsync, CancellationToken.None)).Should().BeFalse();
}
}
public async Task FindProcessManager_returns_process_manager_that_satisfies_predicate()
{
// Arrange
var processManagers = Enumerable
.Repeat <Func <FakeProcessManager> >(() => new FakeProcessManager {
AggregateId = Guid.NewGuid()
}, 10)
.Select(f => f.Invoke())
.ToList();
FakeProcessManager expected = processManagers.First();
using (var db = new FakeProcessManagerDbContext(_dbContextOptions))
{
var random = new Random();
foreach (FakeProcessManager processManager in from p in processManagers
orderby random.Next()
select p)
{
db.FakeProcessManagers.Add(processManager);
}
await db.SaveChangesAsync(default);
public void FromEnvelope_generates_PendingCommand_correctly()
{
// Arrange
var processManager = new FakeProcessManager();
var messageId = Guid.NewGuid();
var correlationId = Guid.NewGuid();
var message = new FakeCommand
{
Int32Value = new Random().Next(),
StringValue = Guid.NewGuid().ToString(),
};
var envelope = new Envelope(messageId, message, correlationId: correlationId);
var serializer = new JsonMessageSerializer();
// Act
var actual = PendingCommand.FromEnvelope(processManager, envelope, serializer);
// Assert
actual.ProcessManagerType.Should().Be(typeof(FakeProcessManager).FullName);
actual.ProcessManagerId.Should().Be(processManager.Id);
actual.MessageId.Should().Be(messageId);
actual.CorrelationId.Should().Be(correlationId);
actual.CommandJson.Should().Be(serializer.Serialize(message));
}
public async Task given_scheduled_message_bus_fails_FlushCommands_deletes_no_scheduled_command()
{
// Arrange
var serializer = new JsonMessageSerializer();
var processManager = new FakeProcessManager();
var random = new Random();
var scheduledCommands = new List <PendingScheduledCommand>(
from command in new[]
{
new FakeCommand {
Int32Value = random.Next(), StringValue = Guid.NewGuid().ToString()
},
new FakeCommand {
Int32Value = random.Next(), StringValue = Guid.NewGuid().ToString()
},
new FakeCommand {
Int32Value = random.Next(), StringValue = Guid.NewGuid().ToString()
},
}
let envelope = new Envelope(command)
let scheduledEnvelope = new ScheduledEnvelope(envelope, DateTime.UtcNow.AddTicks(random.Next()))
select PendingScheduledCommand.FromScheduledEnvelope(processManager, scheduledEnvelope, serializer));
using (var db = new ProcessManagerDbContext(_dbContextOptions))
{
db.PendingScheduledCommands.AddRange(scheduledCommands);
await db.SaveChangesAsync();
}
Guid poisonedMessageId = (from c in scheduledCommands
orderby c.GetHashCode()
select c.MessageId).First();
IScheduledMessageBus scheduledMessageBus = Mock.Of <IScheduledMessageBus>();
var exception = new InvalidOperationException();
Mock.Get(scheduledMessageBus)
.Setup(x => x.Send(It.Is <ScheduledEnvelope>(p => p.Envelope.MessageId == poisonedMessageId), CancellationToken.None))
.ThrowsAsync(exception);
var sut = new SqlCommandPublisher(
() => new ProcessManagerDbContext(_dbContextOptions),
serializer,
Mock.Of <IMessageBus>(),
scheduledMessageBus);
// Act
Func <Task> action = () => sut.FlushCommands(processManager.Id, CancellationToken.None);
// Assert
action.Should().Throw <InvalidOperationException>().Which.Should().BeSameAs(exception);
using (var db = new ProcessManagerDbContext(_dbContextOptions))
{
IQueryable <PendingScheduledCommand> query = from c in db.PendingScheduledCommands
where c.ProcessManagerId == processManager.Id
select c;
List <PendingScheduledCommand> actual = await query.ToListAsync();
actual.Should().BeEquivalentTo(scheduledCommands, opts => opts.RespectingRuntimeTypes());
}
}
