Valkyrie

An Apache Thrift server with pluggable message broker!

Valkyrie implements Adapter pattern to plug-in any message broker you want to process the messages. The current implementation provides an example implementation of RabbitMQ.

You should provide an implementation of Queuer and ValkyrieService interface.

   type Queuer interface {
   
       // Adaptee must provide a *connection* field specific to the Message queue used
       Connect(url string) error
       
       // Arguments are message and queue name
       Produce(message interface{}, queueName string) error
       
       // consume from the given queue using the callback function
       Consume(queueName string, callback func(interface{}) error)
       
       // Closes the connection to message queue using the connection object provided
       Close()
   }

    type ValkyrieService interface {
        // Parameters:
        //  - Message
        //  - Queue
        Send(message string, queue string) (r bool, err error)
    }

After writing your custom message queue implementation, use it to construct the Apache Thrift handlder

Example RabbitMQ message broker handler:

handler := vhandler.NewValkyrieHandler(&vrabbit.RabbitMQ{})

Finally implement the Send method of ValkyrieService.

Example implementation:

    if err := v.messageBroker.Connect(RABBIT_MQ_URL); err != nil {
    		fmt.Println(err)
    		return false, err
    	} else {
    		if err = v.messageBroker.Produce(message, queueName); err != nil {
    			fmt.Println("[*] Failed to produce", err)
    			return false, err
    		}
    		fmt.Println("[+] Produced to queue", queueName)
    		return true, nil
    }

---

Example server implementation:

type valkyrieHandler struct {
	messageQueue vadapter.Queuer
}

Here valkyrieHandler implements Send method of ValkyrieService

messageQueue := &vrabbit.RabbitMQ{}
handler := valkyrieHandler{messageQueue: messageQueue}
valkyrieServer := vserver.NewValkyrieServer("localhost:9090")
valkyrieServer.InjectValkyrieMessageQueue(messageQueue)
valkyrieServer.StartServer(handler)

---

TODO

• Write Valkyrie consumer
• Add support for any kind of data
• Try using Non-Blocking server over TFramedTransport.