spring security SupplierReactiveJwtDecoder 源码
spring security SupplierReactiveJwtDecoder 代码
文件路径：/oauth2/oauth2-jose/src/main/java/org/springframework/security/oauth2/jwt/SupplierReactiveJwtDecoder.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 org.springframework.security.oauth2.jwt;
import java.time.Duration;
import java.util.function.Supplier;
import reactor.core.publisher.Mono;
import reactor.core.scheduler.Schedulers;
/**
* A {@link ReactiveJwtDecoder} that lazily initializes another {@link ReactiveJwtDecoder}
*
* @author Josh Cummings
* @since 5.6
*/
public final class SupplierReactiveJwtDecoder implements ReactiveJwtDecoder {
private static final Duration FOREVER = Duration.ofMillis(Long.MAX_VALUE);
private Mono<ReactiveJwtDecoder> jwtDecoderMono;
public SupplierReactiveJwtDecoder(Supplier<ReactiveJwtDecoder> supplier) {
// @formatter:off
this.jwtDecoderMono = Mono.fromSupplier(supplier)
.subscribeOn(Schedulers.boundedElastic())
.publishOn(Schedulers.parallel())
.onErrorMap(this::wrapException)
.cache((delegate) -> FOREVER, (ex) -> Duration.ZERO, () -> Duration.ZERO);
// @formatter:on
}
private JwtDecoderInitializationException wrapException(Throwable t) {
return new JwtDecoderInitializationException("Failed to lazily resolve the supplied JwtDecoder instance", t);
}
/**
* {@inheritDoc}
*/
@Override
public Mono<Jwt> decode(String token) throws JwtException {
return this.jwtDecoderMono.flatMap((decoder) -> decoder.decode(token));
}
}
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