private ExampleCommand GetExample()
{
ExampleCommand example = new ExampleCommand();
if (IsHelpRequested(example))
{
return(example);
}
bool metUnknownOption = false;
while (!metUnknownOption && Eat() is string option)
{
switch (option)
{
case "-a":
case "--all":
if (example.ExampleName != null)
{
throw logger.Error(new OptionException(option, "Cannot specify example project name when requesting all examples"));
}
example.DownloadAll = GetBoolean();
break;
default:
metUnknownOption = example.ExampleName != null;
if (!metUnknownOption)
{
example.ExampleName = arg;
}
break;
}
}
return(example);
}
public void Post([FromBody] ExampleCommand value)
{
value.Id = Guid.NewGuid().ToString();
Aggregate exampleDomain = new ExampleAggregate();
CommandHandler.ActivateCommand(value, exampleDomain);
}
public override void Specify()
{
given("exactly one command is loaded", () =>
{
var exampleCommand = new ExampleCommand();
var commands = new ConsoleCommand[] { exampleCommand };
when("no parameters are specified", () =>
{
var output = new StringWriter();
var exitCode = arrange(() => ConsoleCommandDispatcher.DispatchCommand(commands, new string[0], output));
then_the_command_runs_without_tracing_parameter_information(output, exitCode);
then("the command's property is not set", () =>
{
expect(() => exampleCommand.Foo == null);
});
});
when("the only parameter specified is the command", () =>
{
var output = new StringWriter();
var exitCode = arrange(() => ConsoleCommandDispatcher.DispatchCommand(commands, new[] { "Example" }, output));
then_the_command_runs_without_tracing_parameter_information(output, exitCode);
then("the command's property is not set", () =>
{
expect(() => exampleCommand.Foo == null);
});
});
when("the only parameter specified is not the command", () =>
{
var output = new StringWriter();
var exitCode = arrange(() => ConsoleCommandDispatcher.DispatchCommand(commands, new[] { "/f=bar" }, output));
then_the_command_runs_without_tracing_parameter_information(output, exitCode);
then("the command's property is set", () =>
{
expect(() => exampleCommand.Foo == "bar");
});
});
when("both the command and an extra parameter are specified", () =>
{
var output = new StringWriter();
var exitCode = arrange(() => ConsoleCommandDispatcher.DispatchCommand(commands, new[] { "Example", "/f=bar" }, output));
then_the_command_runs_without_tracing_parameter_information(output, exitCode);
then("the command's property is set", () =>
{
expect(() => exampleCommand.Foo == "bar");
});
});
});
}
public override void Specify()
{
given("exactly one command is loaded", () =>
{
var exampleCommand = new ExampleCommand();
var commands = new ConsoleCommand[] { exampleCommand };
when("no parameters are specified", () =>
{
var output = new StringWriter();
var exitCode = arrange(() => ConsoleCommandDispatcher.DispatchCommand(commands, new string[0], output));
then_the_command_runs_without_tracing_parameter_information(output, exitCode);
then("the command's property is not set", () =>
{
expect(() => exampleCommand.Foo == null);
});
});
when("the only parameter specified is the command", () =>
{
var output = new StringWriter();
var exitCode = arrange(() => ConsoleCommandDispatcher.DispatchCommand(commands, new[] { "Example" }, output));
then_the_command_runs_without_tracing_parameter_information(output, exitCode);
then("the command's property is not set", () =>
{
expect(() => exampleCommand.Foo == null);
});
});
when("the only parameter specified is not the command", () =>
{
var output = new StringWriter();
var exitCode = arrange(() => ConsoleCommandDispatcher.DispatchCommand(commands, new[] { "/f=bar" }, output));
then_the_command_runs_without_tracing_parameter_information(output, exitCode);
then("the command's property is set", () =>
{
expect(() => exampleCommand.Foo == "bar");
});
});
when("both the command and an extra parameter are specified", () =>
{
var output = new StringWriter();
var exitCode = arrange(() => ConsoleCommandDispatcher.DispatchCommand(commands, new[] { "Example", "/f=bar" }, output));
then_the_command_runs_without_tracing_parameter_information(output, exitCode);
then("the command's property is set", () =>
{
expect(() => exampleCommand.Foo == "bar");
});
});
});
}
public async Task HandlerCompilation()
{
var dispatcher = new MessageDispatcher(new Container(), Substitute.For <IBotService>());
dispatcher.Register("example", typeof(ExampleCommand));
var command = new ExampleCommand();
var message = new Message();
var node = dispatcher.RegisteredCommands["example"];
var response = Assert.IsType <MessageResponse>(node.Handler(command, message, Array.Empty <string>()));
Assert.Equal("First", response.Content);
node = node.Next !;
Assert.NotNull(node);
response = Assert.IsType <MessageResponse>(node.Handler(command, message, new[] { "arg" }));
Assert.Equal("Arg: arg", response.Content);
node = node.Next !;
Assert.NotNull(node);
response = await Assert.IsType <Task <MessageResponse> >(node.Handler(command, message, Array.Empty <string>()));
Assert.Equal("fallback", response.Content);
Assert.Null(node.Next);
}
public async Task SendCommandToTransport()
{
const string TargetEndpoint = "Target";
var routes = new Collection <CommandRoute>
{
new CommandRoute(typeof(ExampleCommand), TargetEndpoint)
};
var publisher = new MessagePublisher(
mockPipeline.Object,
FullNameTypeMap.Instance,
routes);
var command = new ExampleCommand {
Property = "Hello world"
};
await publisher
.SendCommand(command)
.ConfigureAwait(false);
mockPipeline.Verify(
m => m.Process(
It.Is <IEnumerable <OutgoingMessage> >(
value => value.Single().Body == command &&
value.Single().MessageTypeNames.First() == FullNameTypeMap.Instance.GetNameForType(typeof(ExampleCommand)) &&
value.Single().SpecificReceivingEndpointName == TargetEndpoint)),
Times.Once);
}
private void _onExampleCommand(ExampleCommand cmd)
{
// this checks the aggregate to see if a user with this Id has already been created
if (_Id != null)
{
throw new ArgumentException("Id", "User already created");
}
// here is where we can ensure that the command has all the information in it that we expect it to have
if (cmd.Id == null)
{
throw new ArgumentException("Id", "Id is a required field");
}
if (cmd.Email == null)
{
throw new ArgumentException("Email", "Email is a required field");
}
if (cmd.Name == null)
{
throw new ArgumentException("Name", "Name is a required field");
}
// now we assign values to the event model that we created in ExampleEvent
Thread.Sleep(100);
ExampleEvent exampleEvent = new ExampleEvent
{
Id = cmd.Id,
Name = cmd.Name,
Email = cmd.Email
};
// And finally we send the example event off to the Event Worker to be saved, filed and published
EventWorker.Work(exampleEvent);
}
public async Task <ActionResult> Post([FromBody] int value)
{
var exampleCommand = new ExampleCommand(ExampleId.New, value);
await _commandBus.PublishAsync(exampleCommand, CancellationToken.None);
return(CreatedAtAction(nameof(GetExample), new { id = exampleCommand.AggregateId.Value }, exampleCommand));
}
public void Execute_ExampleFound_RunsExample()
{
var exampleCommand = new ExampleCommand(this.examplesMock.Object);
typeof(ExampleCommand)
.GetProperty(nameof(ExampleCommand.ExampleName))
.SetValue(exampleCommand, "Found");
exampleCommand.Execute(CancellationToken.None);
this.exampleMock.Verify(e => e.Run(It.IsAny <CancellationToken>()));
}
public void CommandAndParameterSpecified()
{
var exampleCommand = new ExampleCommand();
var output = new StringWriter();
var exitCode = ConsoleCommandDispatcher.DispatchCommand(exampleCommand, new[] { "Example", "/f=bar" }, output);
then_the_command_runs_without_tracing_parameter_information(output, exitCode);
StringAssert.AreEqualIgnoringCase("bar", exampleCommand.Foo);
}
public void OnlyCommandIsSpecified()
{
var exampleCommand = new ExampleCommand();
var output = new StringWriter();
var exitCode = ConsoleCommandDispatcher.DispatchCommand(exampleCommand, new[] { "Example" }, output);
then_the_command_runs_without_tracing_parameter_information(output, exitCode);
Assert.IsNull(exampleCommand.Foo);
}
public void OnInjectDependencies(Signal <float> exampleSignal)
{
// instantiate a command object
ExampleCommand command = new ExampleCommand();
// register a command as a listener of the signal
exampleSignal.AddCommand(command);
// ...
// further calls to exampleSignal.Dispatch( float value ) will also
// invoke command.Execute( float value )
}
public void GeneratesValidCommandWithEmptyPayload()
{
var command = new ExampleCommand(0x01, 0x02, new byte[0]);
var packet = command.GetBytes(0x31);
Assert.AreEqual(7, packet.Length);
Assert.AreEqual(0xff, packet[0]); // SOP1
Assert.AreEqual(0xff, packet[1]); // SOP2
Assert.AreEqual(0x01, packet[2]); // Device
Assert.AreEqual(0x02, packet[3]); // Command
Assert.AreEqual(0x31, packet[4]); // Sequence
Assert.AreEqual(0x01, packet[5]); // Length of payload + checksum
Assert.AreEqual(0xca, packet[6]); // inverted checksum
}
public void GeneratesValidCommandWithEmptyPayload()
{
var command = new ExampleCommand(0x01, 0x02, new byte[0]);
var packet = command.GetBytes(0x31);
Assert.AreEqual(7, packet.Length);
Assert.AreEqual(0xff, packet[0]); // SOP1
Assert.AreEqual(0xff, packet[1]); // SOP2
Assert.AreEqual(0x01, packet[2]); // Device
Assert.AreEqual(0x02, packet[3]); // Command
Assert.AreEqual(0x31, packet[4]); // Sequence
Assert.AreEqual(0x01, packet[5]); // Length of payload + checksum
Assert.AreEqual(0xca, packet[6]); // inverted checksum
}
static void CommandPattern()
{
Console.WriteLine("\n\nCommandPattern Pattern");
var history = new History();
var exampleService = new ExampleService("Initial value");
var exampleCommand = new ExampleCommand(history, exampleService);
var undoCommand = new UndoCommand <string>(history);
Console.WriteLine(exampleService.GetContent());
exampleCommand.Execute();
Console.WriteLine(exampleService.GetContent());
undoCommand.Execute();
Console.WriteLine(exampleService.GetContent());
}
public void GeneratesValidCommandWithPayload()
{
var command = new ExampleCommand(0xde, 0xad, new byte[] { 0x01 });
var packet = command.GetBytes(0x11);
Assert.AreEqual(8, packet.Length);
Assert.AreEqual(0xff, packet[0]); // SOP1
Assert.AreEqual(0xff, packet[1]); // SOP2
Assert.AreEqual(0xde, packet[2]); // Device
Assert.AreEqual(0xad, packet[3]); // Command
Assert.AreEqual(0x11, packet[4]); // Sequence
Assert.AreEqual(0x02, packet[5]); // Length of payload + checksum
Assert.AreEqual(0x01, packet[6]); // payload
Assert.AreEqual(0x60, packet[7]); // inverted checksum
}
public ActionResult Example([FromBody] ExampleCommand example)
{
try
{
//Commands inherit Id from their base class, this data is used to create the eventstream Id.
//If that stream is derived from fields in the command or event other than a simple Id, this is the place to make assign it.
Aggregate exampleAggreate = new ExampleAggregate();
CommandHandler.ActivateCommand(example, exampleAggreate);
return(Ok(example.Id));
}
catch (Exception e)
{
return(BadRequest(e.Message.ToString()));
}
}
public void GeneratesValidCommandWithPayload()
{
var command = new ExampleCommand(0xde, 0xad, new byte[] {0x01});
var packet = command.GetBytes(0x11);
Assert.AreEqual(8, packet.Length);
Assert.AreEqual(0xff, packet[0]); // SOP1
Assert.AreEqual(0xff, packet[1]); // SOP2
Assert.AreEqual(0xde, packet[2]); // Device
Assert.AreEqual(0xad, packet[3]); // Command
Assert.AreEqual(0x11, packet[4]); // Sequence
Assert.AreEqual(0x02, packet[5]); // Length of payload + checksum
Assert.AreEqual(0x01, packet[6]); // payload
Assert.AreEqual(0x60, packet[7]); // inverted checksum
}
public async Task <IActionResult> Post([FromBody] ExampleCommand request)
{
var bus = BusConfigurator.ConfigureBus();
var sendToUri = new Uri($"{RabbitMqConsts.RabbitMqUri}{RabbitMqConsts.ExampleQueueName}");
var endPoint = await bus.GetSendEndpoint(sendToUri);
await endPoint.Send <IExampleCommand>(new
{
Name = request.Name,
Surname = request.Surname
});
return(Ok("Success"));
}
public void GeneratesValidCommandWithPayload2()
{
var command = new ExampleCommand(0xab, 0xcd, new byte[] {0xa1, 0xa2, 0xa3, 0xa4});
var packet = command.GetBytes(0x21);
Assert.AreEqual(11, packet.Length);
Assert.AreEqual(0xff, packet[0]); // SOP1
Assert.AreEqual(0xff, packet[1]); // SOP2
Assert.AreEqual(0xab, packet[2]); // Device
Assert.AreEqual(0xcd, packet[3]); // Command
Assert.AreEqual(0x21, packet[4]); // Sequence
Assert.AreEqual(0x05, packet[5]); // Length of payload + checksum
Assert.AreEqual(0xa1, packet[6]); // payload
Assert.AreEqual(0xa2, packet[7]); // payload
Assert.AreEqual(0xa3, packet[8]); // payload
Assert.AreEqual(0xa4, packet[9]); // payload
Assert.AreEqual(0xd7, packet[10]); // inverted checksum
}
public void Should_ReturnBadRequest_When_IncorrectModel()
{
// Arrange
var model = new ExampleCommand()
{
Type = 0
};
// Act
var controller = new ExampleController();
var result = controller.Post(model);
// Assert
var okObjectResult = result.Should().BeOfType <BadRequestObjectResult>().Subject;
okObjectResult.StatusCode.Should().Be(400);
}
public void GeneratesValidCommandWithPayload2()
{
var command = new ExampleCommand(0xab, 0xcd, new byte[] { 0xa1, 0xa2, 0xa3, 0xa4 });
var packet = command.GetBytes(0x21);
Assert.AreEqual(11, packet.Length);
Assert.AreEqual(0xff, packet[0]); // SOP1
Assert.AreEqual(0xff, packet[1]); // SOP2
Assert.AreEqual(0xab, packet[2]); // Device
Assert.AreEqual(0xcd, packet[3]); // Command
Assert.AreEqual(0x21, packet[4]); // Sequence
Assert.AreEqual(0x05, packet[5]); // Length of payload + checksum
Assert.AreEqual(0xa1, packet[6]); // payload
Assert.AreEqual(0xa2, packet[7]); // payload
Assert.AreEqual(0xa3, packet[8]); // payload
Assert.AreEqual(0xa4, packet[9]); // payload
Assert.AreEqual(0xd7, packet[10]); // inverted checksum
}
public async Task ThrowExceptionIfNoRouteConfiguredForCommand()
{
var publisher = new MessagePublisher(
mockPipeline.Object,
FullNameTypeMap.Instance,
new Collection <CommandRoute>());
var command = new ExampleCommand {
Property = "Hello world"
};
var exception = await Assert.ThrowsExceptionAsync <InvalidOperationException>(
() => publisher
.SendCommand(command))
.ConfigureAwait(false);
Assert.AreEqual(
"No target endpoint has been configured for the command type \"SimpleEventBus.UnitTests.ExampleCommand, SimpleEventBus.UnitTests, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null\".",
exception.Message);
}
public async Task <RequestResult <Example> > Handle(ExampleCommand request, CancellationToken cancellationToken)
{
var result = new RequestResult <Example>();
var exampleResponse = await _exampleClient.GetExampleFromExternalResource(request.Value);
if (exampleResponse == null)
{
result.AddError(new Error {
Code = "EXAMPLE_CODE", Reason = "Response from external example call was null"
});
result.AddError("EXAMPLE_CODE", "Response from external example call was null");
return(result);
}
result.Payload = await _exampleRepository.InsertExample(exampleResponse.Value);
return(result);
}
private Events[] _exampleCommand(ExampleCommand cmd)
{
//we can check the _Id field to ensure that this command hasn't already been completed.
//hydrate is called below by the EventStore Interfacing methods in infra.
//This way, we can control the events to make sure that the data is as expected
if (!string.IsNullOrEmpty(_Id))
{
throw new Exception("This example event has already been created");
}
if (string.IsNullOrEmpty(cmd.Id))
{
throw new Exception("Id is a required field");
}
//check to see if all required fields are included
//todo, build helper function to siplify required parameter checking
//if all fields are correctly filled out, return an array of events
return(new Events[] { new ExampleEvent {
Id = cmd.Id, Name = cmd.Name
} });
}
public void ShouldCallHandlerWithMatchedArgumentCount()
{
const string ExceptionMessage = "The argument count doesn't match";
var dispatcher = new MessageDispatcher(new Container(), Substitute.For <IBotService>());
dispatcher.Register("example", typeof(ExampleCommand));
var results = new List <object>();
var command = new ExampleCommand();
var message = new Message();
var node = dispatcher.RegisteredCommands["example"];
Assert.Equal(ExceptionMessage, Assert.Throws <ArgumentException>(() => node.Handler(command, message, new[] { "arg" })).Message);
node = node.Next !;
Assert.Equal(ExceptionMessage, Assert.Throws <ArgumentException>(() => node.Handler(command, message, Array.Empty <string>())).Message);
Assert.Equal(ExceptionMessage, Assert.Throws <ArgumentException>(() => node.Handler(command, message, new[] { "arg", "arg2" })).Message);
}
static async Task Main(string[] args)
{
var container = new ServiceCollection()
.AddMediatR(typeof(Program).Assembly)
.Scan(scan => scan
.FromAssemblyOf <Program>()
.AddClasses(classes => classes.AssignableTo(typeof(IValidator <>)))
.AsImplementedInterfaces()
.WithScopedLifetime()
.AddClasses(classes => classes.AssignableTo(typeof(IPipelineBehavior <,>)))
.AsImplementedInterfaces()
.WithScopedLifetime())
.BuildServiceProvider();
var mediator = container.GetRequiredService <IMediator>();
var command = new ExampleCommand
{
ExampleValue = "Test" // valid input
// ExampleValue = "qwertyuiopasdfghjklzxcvbnm" // invalid input
};
await mediator.Send(command);
}
public void Execute_ExampleNotFound_WritesNotFound()
{
var exampleCommand = new ExampleCommand(this.examplesMock.Object);
typeof(ExampleCommand)
.GetProperty(nameof(ExampleCommand.ExampleName))
.SetValue(exampleCommand, "NotFound");
string outputString;
using (var newOut = new StringWriter(CultureInfo.InvariantCulture))
{
var previousOut = Console.Out;
Console.SetOut(newOut);
exampleCommand.Execute(CancellationToken.None);
Console.SetOut(previousOut);
outputString = newOut.ToString();
}
Assert.That(
outputString,
Is.EqualTo("Could not find example named 'NotFound'." + Environment.NewLine));
}
static void Main(string[] args)
{
var rmqService = new RabbitMQServiceBuilder()
.UseJsonSerializer()
.SetDebugWriter(txt => Console.WriteLine($"[ {DateTime.Now.ToString("HH:mm:ss.fff")} ] {txt}"))
.SetOptions(opt =>
{
opt.Hostname = "<hostname>";
opt.Port = 5671;
opt.UseSSL = true;
opt.Username = "******";
opt.Password = "******";
opt.VirtualHost = "/";
})
.AddListenerSubscription <ExampleEvent>(opt =>
{
opt.QueueName = "";
opt.Exchange = "amq.topic";
opt.Exclusive = true;
opt.AutoAck = true;
opt.AutoDelete = true;
opt.Durable = false;
opt.RoutingKey = "event.example";
opt.DebugText += (txt) =>
{
Console.WriteLine(txt);
};
opt.Callback += (evt) =>
{
Console.WriteLine($"[ {DateTime.Now.ToString("HH:mm:ss.fff")} ] Received Event with name: {evt.EventName}");
};
})
.AddRpcSubscription <ExampleCommand>(opt =>
{
opt.QueueName = typeof(ExampleCommand).Name;
opt.Exchange = "";
opt.Exclusive = false;
opt.AutoAck = false;
opt.AutoDelete = false;
opt.Durable = true;
opt.DebugText += (txt) =>
{
Console.WriteLine(txt);
};
opt.Callback += (cmd) =>
{
Console.WriteLine($"[ {DateTime.Now.ToString("HH:mm:ss.fff")} ] Handling command");
return(new CommandResult()
{
StatusCode = 200,
Message = cmd.CommandText
});
};
})
.AddListenerSubscription(new ExampleSubscription())
.Build();
Console.WriteLine($"[ {DateTime.Now} ] Sending Event");
rmqService.Publish("amq.topic", "event.example", new ExampleEvent()
{
EventName = "This is an example event"
});
var cmd = new ExampleCommand()
{
CommandText = "This is an example command"
};
Console.WriteLine($"[ {DateTime.Now} ] Sending Command");
rmqService.Call <CommandResult>(
exchange: "",
routingKey: typeof(ExampleCommand).Name,
content: cmd,
timeoutSeconds: 10,
ResponseCallback: (res) =>
{
Console.WriteLine($"[ {DateTime.Now.ToString("HH:mm:ss.fff")} ] Received Command Result with code: {res.StatusCode} and message: {res.Message}");
},
TimeoutCallback: () =>
{
Console.WriteLine($"[ {DateTime.Now.ToString("HH:mm:ss.fff")} ] Command Timed out");
});
//Example of targeting the "ExampleSubscription.cs" class.
var cmd2 = new ExampleSubscriptionObject()
{
ObjectContent = "This is another example command"
};
Console.WriteLine($"[ {DateTime.Now} ] Sending Command 2");
rmqService.Call <ExampleRpcResult>(
exchange: "",
routingKey: typeof(ExampleSubscriptionObject).Name,
content: cmd2,
timeoutSeconds: 10,
ResponseCallback: (res) =>
{
Console.WriteLine($"[ {DateTime.Now.ToString("HH:mm:ss.fff")} ] Received Command 2 Result with OK: {res.ExampleWasOk} and message: {res.ExampleResultMessage}");
},
TimeoutCallback: () =>
{
Console.WriteLine($"[ {DateTime.Now.ToString("HH:mm:ss.fff")} ] Command Timed out");
});
Console.ReadLine();
}
public ExampleWindowVM()
{
Users = new Users();
ExampleCommand = new ExampleCommand(this);
}
