public async Task <IHttpActionResult> FulfillOrderWebHook(string partner,
[FromBody] OrderFulfillmentMessage order)
{
// Verify that the order was sent as the request body.
if (order == null)
{
var errorSet = new ErrorSet(ErrorCode.ValueIsRequired, nameof(order), "The order body is required.");
try
{
var body = await this.Request.SafeReadContentAsStringAsync();
this.Log
.WithCorrelationId(this.Request.GetOrderFulfillmentCorrelationId())
.Information($"Response: {{Response}} { Environment.NewLine } Missing order detected for {{Controller}}::{{ActionMethod}}({{Partner}}) with Headers: [{{Headers}}] { Environment.NewLine } Body: {{RequestBody}} { Environment.NewLine } The following errors were observed: { Environment.NewLine }{{ErrorSet}}",
HttpStatusCode.BadRequest,
nameof(OrderSubmissionController),
nameof(FulfillOrderWebHook),
partner,
this.Request.Headers,
body,
errorSet);
}
catch
{
// Do nothing; logging is a non-critical operation that should not cause
// cascading failures.
}
return(this.BadRequest(errorSet));
}
// If the emulation data was provided and the caller is not priviledged, then reject the request.
var principal = this.User as ClaimsPrincipal;
if ((order.Emulation != null) &&
((principal == null) || (!principal.HasClaim(claim => claim.Type == CustomClaimTypes.MayAccessPriviledgedOperations))))
{
try
{
this.Log
.WithCorrelationId(this.Request.GetOrderFulfillmentCorrelationId())
.Warning($"Response: {{Response}} { Environment.NewLine } Unauthorized request detected for {{Controller}}::{{ActionMethod}}({{Partner}}) with Headers: [{{Headers}}] { Environment.NewLine } The caller does not have permission to perform a priviledged operation.",
HttpStatusCode.Forbidden,
nameof(OrderSubmissionController),
nameof(FulfillOrderWebHook),
partner,
this.Request.Headers);
}
catch
{
// Do nothing; logging is a non-critical operation that should not cause
// cascading failures.
}
return(this.Content <object>(HttpStatusCode.Forbidden, null));
}
var assets = order.LineItems
.SelectMany(item => item.Assets)
.Where(asset => asset != null)
.ToDictionary(asset => asset.Name, asset => this.ParseAssetLocationToUrl(asset.Location));
// Create the command to trigger order processing and place it on the command queue
var command = new ProcessOrder
{
OrderId = order.OrderRequestHeader.OrderId,
PartnerCode = partner,
Assets = assets,
Emulation = order.Emulation,
Id = Guid.NewGuid(),
CorrelationId = this.Request.GetOrderFulfillmentCorrelationId(),
OccurredTimeUtc = this.clock.GetCurrentInstant().ToDateTimeUtc(),
CurrentUser = principal?.Identity?.Name,
Sequence = 0
};
if (!(await this.processOrderCommandPublisher.TryPublishAsync(command)))
{
this.Log
.WithCorrelationId(this.Request.GetOrderFulfillmentCorrelationId())
.Error("Unable to publish the {CommandName} for {Partner}//{Order}", nameof(ProcessOrder), partner, command.OrderId);
return(this.ServiceUnavailable(this.CaclulateRetryAfter(this.config.ServiceUnavailableeRetryAfterInSeconds)));
}
// This can't be fire-and-forget, as completing the handler with the outstanding request causes an exception.
try
{
await this.eventPublisher.TryPublishAsync(command.CreateNewOrderEvent <OrderReceived>());
}
catch (Exception ex)
{
this.Log
.WithCorrelationId(this.Request.GetOrderFulfillmentCorrelationId())
.Error(ex, "The event {EventName} for {Partner}//{Order} could not be published. This is non-critical for fulfillment processing.", nameof(OrderReceived), partner, command.OrderId);
}
return(this.Accepted(new OrderFulfillmentAccepted(command.OrderId), this.CaclulateRetryAfter(this.config.OrderAcceptedRetryAfterInSeconds)));
}
/// <summary>
/// Performs the tasks needed to handle a <see cref="ProcessOrder" /> command.
/// </summary>
///
/// <param name="processOrderMessage">The brokered message containing the command to process.</param>
///
public async Task HandleProcessOrderAsync([ServiceBusTrigger(TriggerQueueNames.ProcessOrderCommandQueue)] BrokeredMessage processOrderMessage)
{
if (processOrderMessage == null)
{
this.Log.Error("The {CommandType} brokered message was null.", nameof(ProcessOrder));
throw new ArgumentNullException(nameof(processOrderMessage));
}
ILogger log = null;
ProcessOrder command = null;
try
{
// Attempt to retrieve the command from the brokered message.
using (var bodyStream = processOrderMessage.GetBody <Stream>())
using (var reader = new StreamReader(bodyStream))
using (var jsonReader = new JsonTextReader(reader))
{
command = this.jsonSerializer.Deserialize <ProcessOrder>(jsonReader);
jsonReader.Close();
reader.Close();
bodyStream.Close();
};
// If the body was not a proper ProcessOrder command, an empty command will be
// returned. Verify that the Id and OrderId are not in their default states.
if ((command.Id == Guid.Empty) && (command.OrderId == null))
{
throw new MissingDependencyException("The command could not be extracted from the brokered message");
}
// Process the order identified by the command.
var correlationId = command.CorrelationId ?? processOrderMessage.CorrelationId;
log = this.Log.WithCorrelationId(correlationId);
log.Information("A {CommandType} command was received and is being handled. {Command}", nameof(ProcessOrder), command);
var result = await this.orderProcessor.ProcessOrderAsync(command.PartnerCode, command.OrderId, (IReadOnlyDictionary <string, string>) command.Assets, command.Emulation, correlationId);
// Consider the result to complete handling. If processing was successful, then the message should be completed to
// ensure that it is not retried.
if (result?.Outcome == Outcome.Success)
{
await this.submitOrderForProductionPublisher.PublishAsync(command.CreateNewOrderCommand <SubmitOrderForProduction>(cmd => cmd.Emulation = command.Emulation));
await this.CompleteMessageAsync(processOrderMessage);
this.eventPublisher.TryPublishAsync(command.CreateNewOrderEvent <OrderProcessed>()).FireAndForget();
log.Information("A {CommandType} command was successfully handled. The order was staged for submission with the key {CreateOrderMessageKey}.", nameof(ProcessOrder), result?.Payload);
}
else
{
log.Warning("A {CommandType} command was successfully handled. The order procesing was not successful, however.", nameof(ProcessOrder));
// Attempt to schedule the command for a retry using a backoff policy. If scheduled, complete the current message so that it is removed
// from the queue. Otherwise, throw to expose the failure to the WebJob infrastructure so that the command will be moved to the dead letter
// queue after retries are exhausted.
if (await this.ScheduleCommandForRetryIfEligibleAsync(command, this.retryThresholds, this.rng, this.clock, this.processOrderPublisher))
{
await this.CompleteMessageAsync(processOrderMessage);
}
else
{
await this.notifyOfFatalFailurePublisher.TryPublishAsync(command.CreateNewOrderCommand <NotifyOfFatalFailure>());
throw new FailedtoHandleCommandException();
}
}
}
catch (Exception ex) when(!(ex is FailedtoHandleCommandException))
{
(log ?? this.Log).Error(ex, "An exception occurred while handling the {CommandType} comand", nameof(ProcessOrder));
var failedEvent = (command?.CreateNewOrderEvent <OrderProcessingFailed>() ?? new OrderProcessingFailed
{
Id = Guid.NewGuid(),
CorrelationId = processOrderMessage?.CorrelationId,
OccurredTimeUtc = this.clock.GetCurrentInstant().ToDateTimeUtc()
});
this.eventPublisher.TryPublishAsync(failedEvent).FireAndForget();
// Attempt to schedule the command for a retry using a backoff policy. If scheduled, complete the current message so that it is removed
// from the queue. Otherwise, throw to expose the failure to the WebJob infrastructure so that the command will be moved to the dead letter
// queue after retries are exhausted.
if (await this.ScheduleCommandForRetryIfEligibleAsync(command, this.retryThresholds, this.rng, this.clock, this.processOrderPublisher))
{
await this.CompleteMessageAsync(processOrderMessage);
}
else
{
await this.notifyOfFatalFailurePublisher.TryPublishAsync(command.CreateNewOrderCommand <NotifyOfFatalFailure>());
throw;
};
}
}