private async Task ExecuteMiddleware(Middleware middleware, MiddlewareRequest request)
{
request.MiddlewareId = middleware.Id;
request.PipelineId = Id;
request.ReferenceId = middleware.ReferenceId.ToString();
await middleware.Inbox.SendMessage(request);
}
protected override async Task ExecuteAsync(MiddlewareRequest request)
{
if (Status != MiddlewareStatus.Running)
{
throw new Exception("Pipeline not ready");
}
var middleware = Middlewares[_currentMiddlewarePosition];
await ExecuteMiddleware(middleware, request);
}
public IActionResult Post([FromBody] MiddlewareRequest request)
{
if (ModelState.IsValid)
{
CurrentRequest = request;
return(Ok(CurrentRequest));
}
else
{
return(BadRequest(ModelState));
}
}
private Event Convert(MiddlewareRequest request)
{
var @event = new Event()
{
Payload = _converter.Serialize(request),
CreatedOn = request.CreatedOn,
Id = request.Id.ToString(),
PartitionKey = request.MiddlewareId,
ContentType = typeof(MiddlewareRequest).FullName,
Properties = new Dictionary <string, object>(request.ExecutionConfiguration)
};
return(@event);
}
private Message Convert(MiddlewareRequest request)
{
var message = new Message()
{
Id = request.Id.ToString(),
Payload = _converter.Serialize(request),
Properties = new Dictionary <string, object>(request.ExecutionConfiguration),
FilterCorrelation = request.MiddlewareId,
IsControl = false,
ContentType = typeof(MiddlewareRequest).FullName
};
return(message);
}
public override async Task SendMessage(MiddlewareRequest message)
{
var middlewareType = _middleware.GetType();
var address = _mailbox.Address as InMemoryInboxAddress;
MethodInfo executionMethod = middlewareType.GetMethod(address.ExecutingMethodName);
var exceutionTask = executionMethod.Invoke(_middleware, new object[] { message }) as Task;
if (exceutionTask == null)
{
throw new Exception("Execution method in middleware is not formed correctly. It should be returning a task");
}
await exceutionTask;
}
public override Task Execute(PipelineRequest request)
{
_currentExecutingMidlewareIndex = 0;
var middleware = _middlewares[_currentExecutingMidlewareIndex];
var executionId = Guid.NewGuid();
var middlewareRequest = new MiddlewareRequest()
{
Request = request.RequestObject,
InvokedAt = DateTime.UtcNow,
ExecutionConfiguration = request.Configuration,
ExecutionId = executionId
};
return(middleware.Invoke(middlewareRequest));
}
public override async Task ExecuteNextAsync(MiddlewareResponse response)
{
_currentMiddlewarePosition++;
if (_currentMiddlewarePosition == Middlewares.Count)
{
await CompleteAsync(response);
}
var middleware = Middlewares[_currentMiddlewarePosition];
var request = new MiddlewareRequest(ExecutionId, response.Message)
{
Id = Guid.NewGuid(),
ExecutionConfiguration = response.ExecutionConfiguration //TODO - Logic to be defined later
};
await ExecuteMiddleware(middleware, request);
}
public override Task Process(MiddlewareRequest request)
{
var timer = new Stopwatch();
timer.Start();
try
{
var items = JsonConvert.DeserializeObject <List <Item> >(request.Request);
if (items == null)
{
timer.Stop();
var exception = new MiddlewareExceptionResponse()
{
Exception = new Exception("JSON not formed properly"),
CompletedAt = DateTime.UtcNow,
TimeTaken = timer.Elapsed,
ExecutionConfiguration = request.ExecutionConfiguration
};
return(Abort(exception));
}
timer.Stop();
var response = new MiddlewareResponse()
{
Response = request.Request,
CompletedAt = DateTime.UtcNow,
TimeTaken = timer.Elapsed,
ExecutionConfiguration = request.ExecutionConfiguration
};
return(Complete(response));
}
catch (Exception error)
{
timer.Stop();
var response = new MiddlewareExceptionResponse()
{
Exception = error,
CompletedAt = DateTime.UtcNow,
TimeTaken = timer.Elapsed,
ExecutionConfiguration = request.ExecutionConfiguration
};
return(Abort(response));
}
}
public override Task Process(MiddlewareRequest request)
{
var timer = new Stopwatch();
timer.Start();
try
{
var items = JsonConvert.DeserializeObject <List <Item> >(request.Request);
foreach (var item in items)
{
Console.WriteLine($"ID: {item.Id}");
Console.WriteLine($"Name: {item.Id}");
Console.WriteLine($"Description: {item.Id}");
Console.WriteLine($"SKU: {item.SKU}");
Console.WriteLine($"Cost: {item.Cost}");
}
timer.Stop();
var response = new MiddlewareResponse()
{
Response = JsonConvert.SerializeObject(items),
CompletedAt = DateTime.UtcNow,
TimeTaken = timer.Elapsed,
ExecutionConfiguration = request.ExecutionConfiguration
};
return(Complete(response));
}
catch (Exception error)
{
timer.Stop();
var response = new MiddlewareExceptionResponse()
{
Exception = error,
CompletedAt = DateTime.UtcNow,
TimeTaken = timer.Elapsed,
ExecutionConfiguration = request.ExecutionConfiguration
};
return(Abort(response));
}
}
private Task ExecuteNext(MiddlewareResponse lastResponse)
{
var nextRequest = new MiddlewareRequest()
{
ExecutionConfiguration = lastResponse.ExecutionConfiguration,
Request = lastResponse.Response,
InvokedAt = DateTime.UtcNow,
ExecutionId = ExecutionId
};
_currentExecutingMidlewareIndex++;
if (_currentExecutingMidlewareIndex >= _middlewares.Count)
{
return(Complete(lastResponse));
}
else
{
var currentMiddleware = _middlewares[_currentExecutingMidlewareIndex];
return(currentMiddleware.Invoke(nextRequest));
}
}
public override Task Process(MiddlewareRequest request)
{
var timer = new Stopwatch();
timer.Start();
try
{
var items = JsonConvert.DeserializeObject <List <Item> >(request.Request);
var prefix = EnvironmentConfiguration["SKU.Prefix"] as string;
foreach (var item in items)
{
item.SKU = prefix + Guid.NewGuid().ToString().Substring(0, 6);
}
timer.Stop();
var response = new MiddlewareResponse()
{
Response = JsonConvert.SerializeObject(items),
CompletedAt = DateTime.UtcNow,
TimeTaken = timer.Elapsed,
ExecutionConfiguration = request.ExecutionConfiguration
};
return(Complete(response));
}
catch (Exception error)
{
timer.Stop();
var response = new MiddlewareExceptionResponse()
{
Exception = error,
CompletedAt = DateTime.UtcNow,
TimeTaken = timer.Elapsed,
ExecutionConfiguration = request.ExecutionConfiguration
};
return(Abort(response));
}
}
public abstract Task SendMessage(MiddlewareRequest message);
protected abstract Task ExecuteAsync(MiddlewareRequest request);
