Messenger (Apache TinkerPop 3.7.1 API)

All Known Implementing Classes:

SingleMessenger, TinkerMessenger
```
public interface Messenger<M>
```
The Messenger serves as the routing system for messages between vertices. For distributed systems, the messenger can implement a "message passing" engine (distributed memory). For single machine systems, the messenger can implement a "state sharing" engine (shared memory). Each messenger is tied to the particular vertex distributing the message.

Author:

Marko A. Rodriguez (http://markorodriguez.com), Matthias Broecheler (me@matthiasb.com)

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`Iterator<M>`	`receiveMessages()`	Receive all incoming messages to the currently executing vertex.
`void`	`sendMessage(MessageScope messageScope, M message)`	The currently executing vertex can send a message with provided `MessageScope`.

- Method Detail
  - receiveMessages
```
Iterator<M> receiveMessages()
```
    Receive all incoming messages to the currently executing vertex.
    
    Returns:
    
    the messages for the vertex
  - sendMessage
```
void sendMessage(MessageScope messageScope,
                 M message)
```
    The currently executing vertex can send a message with provided MessageScope.
    
    Parameters:
    
    messageScope - the message scope of the message being sent
    
    message - the message to send