org.springframework.graphql.server.webmvc

Class GraphQlWebSocketHandler

java.lang.Object

org.springframework.web.socket.handler.AbstractWebSocketHandler

org.springframework.web.socket.handler.TextWebSocketHandler

org.springframework.graphql.server.webmvc.GraphQlWebSocketHandler

All Implemented Interfaces:

SubProtocolCapable, WebSocketHandler

public class GraphQlWebSocketHandler
extends TextWebSocketHandler
implements SubProtocolCapable

WebSocketHandler for GraphQL based on GraphQL Over WebSocket Protocol and for use on a Servlet container with spring-websocket.

Since:

1.0.0

Author:

Rossen Stoyanchev

Constructor Summary

Constructors

Constructor and Description
GraphQlWebSocketHandler(WebGraphQlHandler graphQlHandler, HttpMessageConverter<?> converter, Duration connectionInitTimeout) Create a new instance.

Method Summary

Modifier and Type	Method and Description
void	afterConnectionClosed(WebSocketSession session, CloseStatus closeStatus)
void	afterConnectionEstablished(WebSocketSession session)
WebSocketHttpRequestHandler	asWebSocketHttpRequestHandler(HandshakeHandler handshakeHandler) Return a WebSocketHttpRequestHandler that uses this instance as its WebGraphQlHandler and adds a HandshakeInterceptor to propagate context.
List<String>	getSubProtocols()
protected void	handleTextMessage(WebSocketSession session, TextMessage webSocketMessage)
void	handleTransportError(WebSocketSession session, Throwable exception)
boolean	supportsPartialMessages()

Methods inherited from class org.springframework.web.socket.handler.TextWebSocketHandler

handleBinaryMessage

Methods inherited from class org.springframework.web.socket.handler.AbstractWebSocketHandler

handleMessage, handlePongMessage

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

GraphQlWebSocketHandler

public GraphQlWebSocketHandler(WebGraphQlHandler graphQlHandler,
                               HttpMessageConverter<?> converter,
                               Duration connectionInitTimeout)

Create a new instance.

Parameters:

graphQlHandler - common handler for GraphQL over WebSocket requests

converter - for JSON encoding and decoding

connectionInitTimeout - how long to wait after the establishment of the WebSocket for the "connection_ini" message from the client.

Method Detail

getSubProtocols

public List<String> getSubProtocols()

Specified by:

getSubProtocols in interface SubProtocolCapable

asWebSocketHttpRequestHandler

public WebSocketHttpRequestHandler asWebSocketHttpRequestHandler(HandshakeHandler handshakeHandler)

Return a WebSocketHttpRequestHandler that uses this instance as its WebGraphQlHandler and adds a HandshakeInterceptor to propagate context.

afterConnectionEstablished

public void afterConnectionEstablished(WebSocketSession session)

Specified by:

afterConnectionEstablished in interface WebSocketHandler

Overrides:

afterConnectionEstablished in class AbstractWebSocketHandler

handleTextMessage

protected void handleTextMessage(WebSocketSession session,
                                 TextMessage webSocketMessage)
                          throws Exception

Overrides:

handleTextMessage in class AbstractWebSocketHandler

Throws:

Exception

handleTransportError

public void handleTransportError(WebSocketSession session,
                                 Throwable exception)

Specified by:

handleTransportError in interface WebSocketHandler

Overrides:

handleTransportError in class AbstractWebSocketHandler

afterConnectionClosed

public void afterConnectionClosed(WebSocketSession session,
                                  CloseStatus closeStatus)

Specified by:

afterConnectionClosed in interface WebSocketHandler

Overrides:

afterConnectionClosed in class AbstractWebSocketHandler

supportsPartialMessages

public boolean supportsPartialMessages()

Specified by:

supportsPartialMessages in interface WebSocketHandler

Overrides:

supportsPartialMessages in class AbstractWebSocketHandler