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Add containsDescendantOfCache for system property source 

Add a simple cache that is used for the system environment property
source to cache `containsDescendantOf` results since descendants
cannot be used due to the more complicated algorithm.

Closes gh-44863
This commit is contained in:
Phillip Webb 2025-03-22 22:12:57 -07:00
parent d9d206a761
commit 83725f8080
1 changed files with 17 additions and 2 deletions
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19
spring-boot-project/spring-boot/src/main/java/org/springframework/boot/context/properties/source/SpringIterableConfigurationPropertySource.java
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@ -38,6 +38,7 @@ import org.springframework.core.env.MapPropertySource;
import org.springframework.core.env.PropertySource;
import org.springframework.core.env.StandardEnvironment;
import org.springframework.core.env.SystemEnvironmentPropertySource;
import org.springframework.util.ConcurrentReferenceHashMap;
/**
* {@link ConfigurationPropertySource} backed by an {@link EnumerablePropertySource}.
@ -59,6 +60,8 @@ class SpringIterableConfigurationPropertySource extends SpringConfigurationPrope
private volatile ConfigurationPropertyName[] configurationPropertyNames;
private final Map<ConfigurationPropertyName, ConfigurationPropertyState> containsDescendantOfCache;
SpringIterableConfigurationPropertySource(EnumerablePropertySource<?> propertySource,
boolean systemEnvironmentSource, PropertyMapper... mappers) {
super(propertySource, systemEnvironmentSource, mappers);
@ -66,6 +69,7 @@ class SpringIterableConfigurationPropertySource extends SpringConfigurationPrope
boolean immutable = isImmutablePropertySource();
this.ancestorOfCheck = getAncestorOfCheck(mappers);
this.cache = new SoftReferenceConfigurationPropertyCache<>(immutable);
this.containsDescendantOfCache = (!systemEnvironmentSource) ? null : new ConcurrentReferenceHashMap<>();
}
private BiPredicate<ConfigurationPropertyName, ConfigurationPropertyName> getAncestorOfCheck(
@ -145,13 +149,24 @@ class SpringIterableConfigurationPropertySource extends SpringConfigurationPrope
: ConfigurationPropertyState.PRESENT;
}
}
result = (this.containsDescendantOfCache != null) ? this.containsDescendantOfCache.get(name) : null;
if (result == null) {
result = (!ancestorOfCheck(name)) ? ConfigurationPropertyState.ABSENT : ConfigurationPropertyState.PRESENT;
if (this.containsDescendantOfCache != null) {
this.containsDescendantOfCache.put(name, result);
}
}
return result;
}
private boolean ancestorOfCheck(ConfigurationPropertyName name) {
ConfigurationPropertyName[] candidates = getConfigurationPropertyNames();
for (ConfigurationPropertyName candidate : candidates) {
if (candidate != null && this.ancestorOfCheck.test(name, candidate)) {
return ConfigurationPropertyState.PRESENT;
return true;
}
}
return ConfigurationPropertyState.ABSENT;
return false;
}
private ConfigurationPropertyName[] getConfigurationPropertyNames() {