public async Task ReceiveMessageFromTopic <T>(Func <T, MessageProcessResponse> onProcess)
{
MessageHandlerOptions options = new MessageHandlerOptions(e =>
{
Trace.TraceError(e.Exception.Message);
return(Task.CompletedTask);
})
{
AutoComplete = false,
MaxAutoRenewDuration = TimeSpan.FromMinutes(1)
};
await Task.Run(() => _subscriptionClient.RegisterMessageHandler(
async(message, token) =>
{
try
{
// Get message
string data = Encoding.UTF8.GetString(message.Body);
T item = JsonConvert.DeserializeObject <T>(data);
// Process message
MessageProcessResponse result = onProcess(item);
switch (result)
{
case MessageProcessResponse.Complete:
await _subscriptionClient.CompleteAsync(message.SystemProperties.LockToken);
break;
case MessageProcessResponse.Abandon:
await _subscriptionClient.AbandonAsync(message.SystemProperties.LockToken);
break;
case MessageProcessResponse.Dead:
await _subscriptionClient.DeadLetterAsync(message.SystemProperties.LockToken);
break;
}
}
catch (Exception ex)
{
await _subscriptionClient.DeadLetterAsync(message.SystemProperties.LockToken);
Trace.TraceError(ex.Message);
}
}, options));
}
/// <summary>
/// The OnProcessAsync
/// </summary>
/// <param name="message">The message<see cref="CoreMessage"/></param>
/// <returns>The <see cref="MessageProcessResponse"/></returns>
public async Task <MessageProcessResponse> OnProcessAsync(CoreMessage message)
{
try
{
Guard.AgainstNull(nameof(message.Body), message?.Body);
string msgBody = Encoding.UTF8.GetString(message?.Body);
MessageProcessResponse messageProcessResponse = MessageProcessResponse.Abandon;
Log.DependencyTrackingTelemetryModule();
DcpMessage dcpMessage = JsonConvert.DeserializeObject <DcpMessage>(msgBody);
Dictionary <string, Func <IBusinessValidationStrategy> > strategies = getStrategy.GetListOfStrategy(mediator);
Domain.Model.BusinessValidationProxy businessValidationProxy = await strategies[dcpMessage.ServiceOutput.Items[0].ItemId.ToUpperInvariant()]()
.ExecuteStrategy(dcpMessage.ServiceOutput.Items[0].ItemId, dcpMessage.ServiceOutput.Items[0]);
if (businessValidationProxy.Valid)
{
List <Item> validItems = GetItemCollection(businessValidationProxy.ValidPaths, dcpMessage);
if (validItems != null && validItems.Count > 0)
{
messageProcessResponse = await mediator.Send(new SendServiceOutPutMessageCommand(validItems, message, businessValidationProxy.Valid, businessValidationProxy.ErrorMessages));
}
}
List <Item> invalidItems = GetItemCollection(businessValidationProxy.InValidPaths, dcpMessage);
if (invalidItems != null && invalidItems.Count > 0)
{
businessValidationProxy.InValid = false;
messageProcessResponse = await mediator.Send(new SendServiceOutPutMessageCommand(invalidItems, message, businessValidationProxy.InValid, businessValidationProxy.ErrorMessages));
}
return(messageProcessResponse);
}
catch (Exception ex)
{
Log.Error(ex.Message);
return(MessageProcessResponse.Abandon);
}
}
