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/*
* # ============LICENSE_START=======================================================
* # Copyright (c) 2021 AT&T Intellectual Property. All rights reserved.
* # ================================================================================
* # 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.
* # ============LICENSE_END=========================================================
*/
package org.onap.dcaegen2.platform.helmchartgenerator;
import com.fasterxml.jackson.databind.ObjectMapper;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.io.FileUtils;
import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.Map;
/**
* An utility class for various file related tasks.
* @author Dhrumin Desai
*/
@Slf4j
public class Utils {
private static final ObjectMapper MAPPER = new ObjectMapper();
private Utils() {}
public static <T> T deserializeJsonFileToModel(String filePath, Class<T> modelClass) {
return deserializeJsonFileToModel(new File(filePath), modelClass);
}
/**
* maps json file to a model class
* @param file Json file which holds the data
* @param modelClass target model class for mapping
* @return mapped model instance
*/
public static <T> T deserializeJsonFileToModel(File file, Class<T> modelClass) {
try {
return MAPPER.readValue(file, modelClass);
} catch (IOException e) {
log.error(e.getMessage());
throw new RuntimeException("Error occurred while converting file to the given model class");
}
}
/**
* copies dir/file to a temp location on OS
* @param srcLocation
* @return
*/
public static File cloneFileToTempLocation(String srcLocation) {
File cloneLocation = null;
try {
Path tempRootDir = Files.createTempDirectory("chart");
cloneLocation = new File(tempRootDir.toString());
log.info("cloning dir/file at : " + tempRootDir);
FileUtils.copyDirectory(new File(srcLocation), cloneLocation);
} catch (IOException e) {
log.error(e.getMessage());
throw new RuntimeException("Error occured while cloning file to temp location.");
}
return cloneLocation;
}
/**
* deletes dir / file from temp location of OS
* @param dir dir to be deleted
*/
public static void deleteTempFileLocation(File dir) {
try {
FileUtils.deleteDirectory(dir);
} catch (IOException e) {
log.warn("Could not delete dir/file: " + dir.getAbsolutePath());
}
}
/**
* puts value into a map if only exists
* @param map a map
* @param key a key
* @param value a value
*/
public static void putIfNotNull(Map<String, Object> map, String key, Object value){
if(value != null){
map.put(key, value);
}
}
}
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