spring-graphql GraphQlWebSocketMessageType 源码
spring-graphql GraphQlWebSocketMessageType 代码
文件路径：/spring-graphql/src/main/java/org/springframework/graphql/server/support/GraphQlWebSocketMessageType.java
/*
* Copyright 2002-2022 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.graphql.server.support;
/**
* Enum for a message type as defined in the GraphQL over WebSocket spec proposal.
*
* @author Rossen Stoyanchev
* @since 1.0.0
* @see <a href="https://github.com/enisdenjo/graphql-ws/blob/master/PROTOCOL.md">GraphQL Over WebSocket Protocol</a>
*/
public enum GraphQlWebSocketMessageType {
CONNECTION_INIT("connection_init", false),
CONNECTION_ACK("connection_ack", false),
PING("ping", false),
PONG("pong", false),
SUBSCRIBE("subscribe", true),
NEXT("next", true),
ERROR("error", true),
COMPLETE("complete", false),
/**
* Indicates the GraphQL message did not have a message type.
*/
NOT_SPECIFIED("", false);
private static final GraphQlWebSocketMessageType[] VALUES;
static {
VALUES = values();
}
private final String value;
private final boolean requiresPayload;
GraphQlWebSocketMessageType(String value, boolean requiresPayload) {
this.value = value;
this.requiresPayload = requiresPayload;
}
/**
* The protocol value for the message type.
*/
public String value() {
return this.value;
}
/**
* Return {@code } if the message type has a payload, and it is required.
*/
public boolean doesNotRequirePayload() {
return !this.requiresPayload;
}
public static GraphQlWebSocketMessageType fromValue(String value) {
for (GraphQlWebSocketMessageType type : VALUES) {
if (type.value.equals(value)) {
return type;
}
}
throw new IllegalArgumentException("No matching constant for [" + value + "]");
}
@Override
public String toString() {
return this.value;
}
}
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