dubbo RegexProperties 源码
dubbo RegexProperties 代码
文件路径：/dubbo-common/src/main/java/org/apache/dubbo/common/utils/RegexProperties.java
/*
* 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.common.utils;
import org.apache.dubbo.common.constants.CommonConstants;
import java.util.Comparator;
import java.util.List;
import java.util.Properties;
import java.util.regex.Pattern;
import java.util.stream.Collectors;
/**
* Regex matching of keys is supported.
*/
public class RegexProperties extends Properties {
@Override
public String getProperty(String key) {
String value = super.getProperty(key);
if (value != null) {
return value;
}
// Sort the keys to solve the problem of matching priority.
List<String> sortedKeyList = keySet()
.stream()
.map(k -> (String) k)
.sorted(Comparator.reverseOrder())
.collect(Collectors.toList());
String keyPattern = sortedKeyList
.stream()
.filter(k -> {
String matchingKey = k;
if(matchingKey.startsWith(CommonConstants.ANY_VALUE)){
matchingKey = CommonConstants.HIDE_KEY_PREFIX + matchingKey;
}
return Pattern.matches(matchingKey, key);
})
.findFirst()
.orElse(null);
return keyPattern == null ? null : super.getProperty(keyPattern);
}
}
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