/*
* Copyright 2013-2015 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
*
* 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.springframework.cloud.netflix.archaius;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import org.apache.commons.configuration.AbstractConfiguration;
import org.springframework.core.env.CompositePropertySource;
import org.springframework.core.env.ConfigurableEnvironment;
import org.springframework.core.env.EnumerablePropertySource;
import org.springframework.core.env.MutablePropertySources;
import org.springframework.core.env.PropertySource;
import org.springframework.core.env.StandardEnvironment;
/**
* @author Spencer Gibb
*/
public class ConfigurableEnvironmentConfiguration extends AbstractConfiguration {
private final ConfigurableEnvironment environment;
public ConfigurableEnvironmentConfiguration(ConfigurableEnvironment environment) {
this.environment = environment;
}
@Override
protected void addPropertyDirect(String key, Object value) {
}
@Override
public boolean isEmpty() {
return !getKeys().hasNext(); // TODO: find a better way to do this
}
@Override
public boolean containsKey(String key) {
return this.environment.containsProperty(key);
}
@Override
public Object getProperty(String key) {
return this.environment.getProperty(key);
}
@Override
public Iterator<String> getKeys() {
List<String> result = new ArrayList<>();
for (Map.Entry<String, PropertySource<?>> entry : getPropertySources().entrySet()) {
PropertySource<?> source = entry.getValue();
if (source instanceof EnumerablePropertySource) {
EnumerablePropertySource<?> enumerable = (EnumerablePropertySource<?>) source;
for (String name : enumerable.getPropertyNames()) {
result.add(name);
}
}
}
return result.iterator();
}
private Map<String, PropertySource<?>> getPropertySources() {
Map<String, PropertySource<?>> map = new LinkedHashMap<>();
MutablePropertySources sources = (this.environment != null ? this.environment
.getPropertySources() : new StandardEnvironment().getPropertySources());
for (PropertySource<?> source : sources) {
extract("", map, source);
}
return map;
}
private void extract(String root, Map<String, PropertySource<?>> map,
PropertySource<?> source) {
if (source instanceof CompositePropertySource) {
for (PropertySource<?> nest : ((CompositePropertySource) source)
.getPropertySources()) {
extract(source.getName() + ":", map, nest);
}
}
else {
map.put(root + source.getName(), source);
}
}
}