spring-graphql RequestAttributesAccessor 源码
spring-graphql RequestAttributesAccessor 代码
文件路径：/samples/webmvc-http/src/main/java/io/spring/sample/graphql/greeting/RequestAttributesAccessor.java
/*
* Copyright 2002-2021 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 io.spring.sample.graphql.greeting;
import java.util.Map;
import org.springframework.graphql.execution.ThreadLocalAccessor;
import org.springframework.stereotype.Component;
import org.springframework.web.context.request.RequestAttributes;
import org.springframework.web.context.request.RequestContextHolder;
/**
* {@link ThreadLocalAccessor} to expose a thread-bound RequestAttributes object to data
* fetchers in Spring for GraphQL.
*/
@Component
public class RequestAttributesAccessor implements ThreadLocalAccessor {
private static final String KEY = RequestAttributesAccessor.class.getName();
@Override
public void extractValues(Map<String, Object> container) {
container.put(KEY, RequestContextHolder.getRequestAttributes());
}
@Override
public void restoreValues(Map<String, Object> values) {
if (values.containsKey(KEY)) {
RequestContextHolder.setRequestAttributes((RequestAttributes) values.get(KEY));
}
}
@Override
public void resetValues(Map<String, Object> values) {
RequestContextHolder.resetRequestAttributes();
}
}
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