org.springframework.boot.context.config.FilteredPropertySource Maven / Gradle / Ivy
/*
* Copyright 2012-2019 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.context.config;
import java.util.Set;
import java.util.function.Consumer;
import org.springframework.core.env.ConfigurableEnvironment;
import org.springframework.core.env.MutablePropertySources;
import org.springframework.core.env.PropertySource;
/**
* Internal {@link PropertySource} implementation used by
* {@link ConfigFileApplicationListener} to filter out properties for specific operations.
*
* @author Phillip Webb
*/
class FilteredPropertySource extends PropertySource> {
private final Set filteredProperties;
FilteredPropertySource(PropertySource original, Set filteredProperties) {
super(original.getName(), original);
this.filteredProperties = filteredProperties;
}
@Override
public Object getProperty(String name) {
if (this.filteredProperties.contains(name)) {
return null;
}
return getSource().getProperty(name);
}
static void apply(ConfigurableEnvironment environment, String propertySourceName, Set filteredProperties,
Consumer> operation) {
MutablePropertySources propertySources = environment.getPropertySources();
PropertySource original = propertySources.get(propertySourceName);
if (original == null) {
operation.accept(null);
return;
}
propertySources.replace(propertySourceName, new FilteredPropertySource(original, filteredProperties));
try {
operation.accept(original);
}
finally {
propertySources.replace(propertySourceName, original);
}
}
}