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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.apache.dubbo.config.spring.util;
import org.springframework.core.env.CompositePropertySource;
import org.springframework.core.env.ConfigurableEnvironment;
import org.springframework.core.env.EnumerablePropertySource;
import org.springframework.core.env.Environment;
import org.springframework.core.env.MutablePropertySources;
import org.springframework.core.env.PropertySource;
import org.springframework.util.ObjectUtils;
import java.util.Collections;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.SortedMap;
import java.util.TreeMap;
/**
* The utilities class for {@link Environment}
*
* @see Environment
* @since 2.7.0
*/
public abstract class EnvironmentUtils {
/**
* The separator of property name
*/
public static final String PROPERTY_NAME_SEPARATOR = ".";
/**
* The prefix of property name of Dubbo
*/
public static final String DUBBO_PREFIX = "dubbo";
/**
* Extras The properties from {@link ConfigurableEnvironment}
*
* @param environment {@link ConfigurableEnvironment}
* @return Read-only Map
*/
public static Map extractProperties(ConfigurableEnvironment environment) {
return Collections.unmodifiableMap(doExtraProperties(environment));
}
private static Map doExtraProperties(ConfigurableEnvironment environment) {
Map properties = new LinkedHashMap<>(); // orderly
Map> map = doGetPropertySources(environment);
for (PropertySource source : map.values()) {
if (source instanceof EnumerablePropertySource) {
EnumerablePropertySource propertySource = (EnumerablePropertySource) source;
String[] propertyNames = propertySource.getPropertyNames();
if (ObjectUtils.isEmpty(propertyNames)) {
continue;
}
for (String propertyName : propertyNames) {
if (!properties.containsKey(propertyName)) { // put If absent
properties.put(propertyName, propertySource.getProperty(propertyName));
}
}
}
}
return properties;
}
private static Map> doGetPropertySources(ConfigurableEnvironment environment) {
Map> map = new LinkedHashMap<>();
MutablePropertySources sources = environment.getPropertySources();
for (PropertySource source : sources) {
extract("", map, source);
}
return map;
}
private static void extract(String root, Map> 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);
}
}
/**
* Filters Dubbo Properties from {@link ConfigurableEnvironment}
*
* @param environment {@link ConfigurableEnvironment}
* @return Read-only SortedMap
*/
public static SortedMap filterDubboProperties(ConfigurableEnvironment environment) {
SortedMap dubboProperties = new TreeMap<>();
Map properties = extractProperties(environment);
for (Map.Entry entry : properties.entrySet()) {
String propertyName = entry.getKey();
if (propertyName.startsWith(DUBBO_PREFIX + PROPERTY_NAME_SEPARATOR)
&& entry.getValue() != null) {
dubboProperties.put(propertyName, environment.resolvePlaceholders(entry.getValue().toString()));
}
}
return Collections.unmodifiableSortedMap(dubboProperties);
}
}