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Grails Web Application Framework
/*
* Copyright 2014 original 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
*
* http://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.grails.config;
import grails.util.Environment;
import groovy.transform.CompileStatic;
import org.springframework.core.env.EnumerablePropertySource;
import org.springframework.core.env.PropertySource;
import org.springframework.core.env.PropertySources;
import java.util.ArrayList;
import java.util.List;
/**
* A PropertySource aware of the Grails environment and that resolves keys based on the environment from other property sources
*
* @author Graeme Rocher
* @since 3.0
*/
public class EnvironmentAwarePropertySource extends EnumerablePropertySource {
EnvironmentAwarePropertySource(PropertySources source) {
super("grails.environment", source);
}
protected List propertyNames;
@Override
public String[] getPropertyNames() {
if(propertyNames == null) {
propertyNames = new ArrayList();
Environment env = Environment.getCurrent();
String key = "environments." + env.getName();
for(PropertySource propertySource : source) {
if((propertySource != this) &&
!propertySource.getName().contains("plugin") && // plugin default configuration is not allowed to be environment aware (GRAILS-12123)
propertySource instanceof EnumerablePropertySource) {
EnumerablePropertySource enumerablePropertySource = (EnumerablePropertySource)propertySource;
for(String propertyName : enumerablePropertySource.getPropertyNames()) {
if(propertyName.startsWith(key) && propertyName.length() > key.length()) {
propertyNames.add(propertyName.substring(key.length() + 1));
}
}
}
}
}
return propertyNames.toArray(new String[propertyNames.size()]);
}
@Override
public Object getProperty(String name) {
if(!propertyNames.contains(name)) {
return null;
}
Environment env = Environment.getCurrent();
String key = "environments." + env.getName() + '.' + name;
for(PropertySource propertySource : source) {
if(propertySource != this) {
Object value = propertySource.getProperty(key);
if(value != null) return value;
}
}
return null;
}
}