AMQP-protocol

uses
  sgcAMQP_Client, sgcAMQP_Classes;

var
  AMQPClient: TsgcAMQPClient;

procedure TForm1.FormCreate(Sender: TObject);
begin
  AMQPClient := TsgcAMQPClient.Create(nil);
  AMQPClient.Host := 'rabbitmq.example.com';
  AMQPClient.Port := 5672;
  AMQPClient.Authentication.Username := 'guest';
  AMQPClient.Authentication.Password := 'guest';
  AMQPClient.VirtualHost := '/';

  // Set up event handlers
  AMQPClient.OnAMQPConnect := OnAMQPConnect;
  AMQPClient.OnAMQPMessage := OnAMQPMessage;
  AMQPClient.Connect;
end;

procedure TForm1.OnAMQPConnect(Sender: TObject);
begin
  // Open a channel
  AMQPClient.OpenChannel(1);

  // Declare a queue
  AMQPClient.DeclareQueue(1, 'orders',
    False, True, False, False);

  // Start consuming messages
  AMQPClient.BasicConsume(1, 'orders',
    'consumer-1', False, False, False, False);
end;

procedure TForm1.OnAMQPMessage(Sender: TObject;
  aChannel: Integer; aMessage: TsgcAMQPMessage);
begin
  // Process the message
  Memo1.Lines.Add('Received: ' + aMessage.Body);

  // Acknowledge the message
  AMQPClient.BasicAck(aChannel, aMessage.DeliveryTag, False);
end;

procedure TForm1.ButtonPublishClick(Sender: TObject);
begin
  // Publish a message to the default exchange
  AMQPClient.BasicPublish(1, '', 'orders',
    '{"orderId": 67890, "total": 99.95}');
end;