PropertiesModuleConfigRepository.java
/**
* Copyright (c) 2018, RTE (http://www.rte-france.com)
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
* SPDX-License-Identifier: MPL-2.0
*/
package com.powsybl.commons.config;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.xml.stream.XMLOutputFactory;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamWriter;
import java.io.*;
import java.nio.charset.StandardCharsets;
import java.nio.file.DirectoryStream;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.Objects;
import java.util.Optional;
import java.util.Properties;
/**
*
* @author Geoffroy Jamgotchian {@literal <geoffroy.jamgotchian at rte-france.com>}
*/
public class PropertiesModuleConfigRepository implements ModuleConfigRepository {
private static final Logger LOGGER = LoggerFactory.getLogger(PropertiesModuleConfigRepository.class);
private final Path configDir;
public PropertiesModuleConfigRepository(Path configDir) {
this.configDir = Objects.requireNonNull(configDir);
}
private Path getModulePath(String name) {
return configDir.resolve(name + ".properties");
}
@Override
public Optional<ModuleConfig> getModuleConfig(String name) {
Path path = getModulePath(name);
if (!Files.exists(path)) {
return Optional.empty();
}
LOGGER.info("Reading property file {}", path);
Properties properties = new Properties();
try {
try (InputStream is = Files.newInputStream(path)) {
properties.load(is);
}
} catch (IOException e) {
throw new UncheckedIOException(e);
}
return Optional.of(new MapModuleConfig(properties, configDir.getFileSystem()));
}
public static void writeXml(Path configDir, Path xmlFile) throws IOException, XMLStreamException {
XMLOutputFactory output = XMLOutputFactory.newInstance();
try (Writer writer = Files.newBufferedWriter(xmlFile, StandardCharsets.UTF_8)) {
XMLStreamWriter xmlWriter = output.createXMLStreamWriter(writer);
try {
xmlWriter.writeStartDocument(StandardCharsets.UTF_8.toString(), "1.0");
xmlWriter.writeStartElement("config");
try (DirectoryStream<Path> ds = Files.newDirectoryStream(configDir, entry -> Files.isRegularFile(entry) && entry.getFileName().toString().endsWith(".properties"))) {
for (Path file : ds) {
String fileName = file.getFileName().toString();
String fileNameWithoutExtension = fileName.substring(0, fileName.length() - 11);
xmlWriter.writeStartElement(fileNameWithoutExtension);
Properties properties = new Properties();
try (Reader reader = Files.newBufferedReader(file, StandardCharsets.UTF_8)) {
properties.load(reader);
}
for (String name : properties.stringPropertyNames()) {
String value = properties.getProperty(name);
xmlWriter.writeStartElement(name);
xmlWriter.writeCharacters(value);
xmlWriter.writeEndElement();
}
xmlWriter.writeEndElement();
}
}
xmlWriter.writeEndElement();
xmlWriter.writeEndDocument();
} finally {
xmlWriter.close();
}
}
}
}