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 given_scheduled_message_bus_fails_FlushCommands_deletes_no_scheduled_command()
{
// Arrange
var serializer = new JsonMessageSerializer();
var processManager = new FooProcessManager();
var fixture = new Fixture();
var scheduledCommands = new List <PendingScheduledCommand>(
from command in fixture.CreateMany <FooCommand>()
let envelope = new Envelope(command)
let scheduledEnvelope = new ScheduledEnvelope(envelope, fixture.Create <DateTimeOffset>())
select PendingScheduledCommand.FromScheduledEnvelope(processManager, scheduledEnvelope, serializer));
using (var db = new FooProcessManagerDbContext())
{
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 FooProcessManagerDbContext(),
serializer,
Mock.Of <IMessageBus>(),
scheduledMessageBus);
// Act
Func <Task> action = () => sut.FlushCommands(processManager.Id, CancellationToken.None);
// Assert
action.ShouldThrow <InvalidOperationException>().Which.Should().BeSameAs(exception);
using (var db = new FooProcessManagerDbContext())
{
IQueryable <PendingScheduledCommand> query = from c in db.PendingScheduledCommands
where c.ProcessManagerId == processManager.Id
select c;
List <PendingScheduledCommand> actual = await query.ToListAsync();
actual.ShouldAllBeEquivalentTo(scheduledCommands, opts => opts.RespectingRuntimeTypes());
}
}
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 FlushCommands_absorbs_exception_caused_by_that_some_pending_command_already_deleted_since_loaded()
{
// Arrange
var messageBus = new CompletableMessageBus();
var serializer = new JsonMessageSerializer();
var sut = new SqlCommandPublisher(
() => new FooProcessManagerDbContext(),
serializer,
messageBus,
Mock.Of <IScheduledMessageBus>());
var processManager = new FooProcessManager();
using (var db = new FooProcessManagerDbContext())
{
db.PendingCommands.AddRange(
new Fixture()
.CreateMany <FooCommand>()
.Select(c => new Envelope(c))
.Select(e => PendingCommand.FromEnvelope(processManager, e, serializer)));
await db.SaveChangesAsync();
}
// Act
Func <Task> action = async() =>
{
Task flushTask = sut.FlushCommands(processManager.Id, CancellationToken.None);
using (var db = new FooProcessManagerDbContext())
{
List <PendingCommand> pendingCommands = await db
.PendingCommands
.Where(c => c.ProcessManagerId == processManager.Id)
.OrderByDescending(c => c.Id)
.Take(1)
.ToListAsync();
db.PendingCommands.RemoveRange(pendingCommands);
await db.SaveChangesAsync();
}
messageBus.Complete();
await flushTask;
};
// Assert
action.ShouldNotThrow();
}
public async Task EnqueueAll_publishes_all_pending_scheduled_commands_asynchronously()
{
// Arrange
var serializer = new JsonMessageSerializer();
var fixture = new Fixture();
using (var db = new FooProcessManagerDbContext())
{
for (int i = 0; i < 3; i++)
{
var processManager = new FooProcessManager();
db.PendingScheduledCommands.AddRange(from command in Enumerable.Repeat(new FooCommand(), 3)
let envelope = new Envelope(command)
let scheduledEnvelope = new ScheduledEnvelope(envelope, DateTimeOffset.Now)
select PendingScheduledCommand.FromScheduledEnvelope(processManager, scheduledEnvelope, serializer));
}
await db.SaveChangesAsync();
}
var sut = new SqlCommandPublisher(
() => new FooProcessManagerDbContext(),
serializer,
Mock.Of <IMessageBus>(),
Mock.Of <IScheduledMessageBus>());
// Act
sut.EnqueueAll(CancellationToken.None);
// Assert
using (var db = new FooProcessManagerDbContext())
{
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 FlushCommands_sends_all_scheduled_commands_associated_with_specified_process_manager_sequentially()
{
// Arrange
var serializer = new JsonMessageSerializer();
var processManager = new FooProcessManager();
var noiseProcessManager = new FooProcessManager();
var fixture = new Fixture();
var scheduledEnvelopes = new List <ScheduledEnvelope>(
from command in fixture.CreateMany <FooCommand>()
let envelope = new Envelope(Guid.NewGuid(), command, null, Guid.NewGuid(), null)
select new ScheduledEnvelope(envelope, fixture.Create <DateTimeOffset>()));
using (var db = new FooProcessManagerDbContext())
{
db.PendingScheduledCommands.AddRange(
from scheduledEnvelope in scheduledEnvelopes
select PendingScheduledCommand.FromScheduledEnvelope(processManager, scheduledEnvelope, serializer));
db.PendingScheduledCommands.AddRange(
from scheduledEnvelope in fixture.CreateMany <ScheduledEnvelope>()
select PendingScheduledCommand.FromScheduledEnvelope(noiseProcessManager, scheduledEnvelope, serializer));
await db.SaveChangesAsync();
}
var scheduledMessageBus = new ScheduledMessageBus();
var sut = new SqlCommandPublisher(
() => new FooProcessManagerDbContext(),
serializer,
Mock.Of <IMessageBus>(),
scheduledMessageBus);
// Act
await sut.FlushCommands(processManager.Id, CancellationToken.None);
// Assert
scheduledMessageBus.Sent.ShouldAllBeEquivalentTo(scheduledEnvelopes, opts => opts.WithStrictOrdering().RespectingRuntimeTypes());
}
public async Task given_no_command_FlushCommands_does_not_try_to_send()
{
// Arrange
IMessageBus messageBus = Mock.Of <IMessageBus>();
var sut = new SqlCommandPublisher(
() => new ProcessManagerDbContext(_dbContextOptions),
new JsonMessageSerializer(),
messageBus,
Mock.Of <IScheduledMessageBus>());
var processManagerId = Guid.NewGuid();
// Act
await sut.FlushCommands(processManagerId, CancellationToken.None);
// Assert
Mock.Get(messageBus).Verify(
x =>
x.Send(
It.IsAny <IEnumerable <Envelope> >(),
It.IsAny <CancellationToken>()),
Times.Never());
}
