com.wavemaker.commons.util.WMYamlProcessor Maven / Gradle / Ivy
/*******************************************************************************
* Copyright (C) 2022-2023 WaveMaker, Inc.
*
* 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 com.wavemaker.commons.util;
import java.util.Collection;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.Properties;
import org.springframework.beans.factory.config.YamlProcessor;
import org.springframework.lang.Nullable;
import org.springframework.util.StringUtils;
/**
* This class uses YamlProcessor overrides the DefaultYamlProcessor to convert the yaml resources to properties
* with property values having List, Set etc objects instead of [0],[1] etc.
* Example:
* servers:
* - dev.bar.com
* - foo.bar.com
* For the above yaml the generated property value will be a list of strings.
*/
public class WMYamlProcessor extends DefaultYamlProcessor {
@Override
protected void process(YamlProcessor.MatchCallback callback) {
super.process((properties, map) -> {
Map flattenedMap = getFlatMap(map);
Properties customProperties = new Properties();
customProperties.putAll(flattenedMap);
callback.process(customProperties, map);
});
}
private Map getFlatMap(Map source) {
Map result = new LinkedHashMap<>();
buildFlatMap(result, source, null);
return result;
}
private void buildFlatMap(Map result, Map source, @Nullable String path) {
source.forEach((key, value) -> {
if (StringUtils.hasText(path)) {
if (key.startsWith("[")) {
key = path + key;
} else {
key = path + '.' + key;
}
}
if (value instanceof String) {
result.put(key, value);
} else if (value instanceof Map) {
Map map = (Map) value;
buildFlatMap(result, map, key);
} else if (value instanceof Collection) {
result.put(key, value);
} else {
result.put(key, (value != null ? value : ""));
}
});
}
}