spring CacheCondition 源码
springboot CacheCondition 代码
文件路径：/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/cache/CacheCondition.java
/*
* Copyright 2012-2022 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.boot.autoconfigure.cache;
import org.springframework.boot.autoconfigure.condition.ConditionMessage;
import org.springframework.boot.autoconfigure.condition.ConditionOutcome;
import org.springframework.boot.autoconfigure.condition.SpringBootCondition;
import org.springframework.boot.context.properties.bind.BindException;
import org.springframework.boot.context.properties.bind.BindResult;
import org.springframework.boot.context.properties.bind.Binder;
import org.springframework.context.annotation.ConditionContext;
import org.springframework.core.env.Environment;
import org.springframework.core.type.AnnotatedTypeMetadata;
import org.springframework.core.type.AnnotationMetadata;
import org.springframework.core.type.ClassMetadata;
/**
* General cache condition used with all cache configuration classes.
*
* @author Stephane Nicoll
* @author Phillip Webb
* @author Madhura Bhave
*/
class CacheCondition extends SpringBootCondition {
@Override
public ConditionOutcome getMatchOutcome(ConditionContext context, AnnotatedTypeMetadata metadata) {
String sourceClass = "";
if (metadata instanceof ClassMetadata classMetadata) {
sourceClass = classMetadata.getClassName();
}
ConditionMessage.Builder message = ConditionMessage.forCondition("Cache", sourceClass);
Environment environment = context.getEnvironment();
try {
BindResult<CacheType> specified = Binder.get(environment).bind("spring.cache.type", CacheType.class);
if (!specified.isBound()) {
return ConditionOutcome.match(message.because("automatic cache type"));
}
CacheType required = CacheConfigurations.getType(((AnnotationMetadata) metadata).getClassName());
if (specified.get() == required) {
return ConditionOutcome.match(message.because(specified.get() + " cache type"));
}
}
catch (BindException ex) {
}
return ConditionOutcome.noMatch(message.because("unknown cache type"));
}
}
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- 所属分类： 后端技术
- 本文标签： Java Spring Spring Boot
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