org.graylog2.featureflag.FeatureFlagsResources Maven / Gradle / Ivy
/*
* Copyright (C) 2020 Graylog, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* .
*/
package org.graylog2.featureflag;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Map;
import java.util.Properties;
import java.util.function.Function;
import java.util.stream.Collectors;
class FeatureFlagsResources {
Map defaultProperties(String file) throws IOException {
return loadProperties(FeatureFlagsResources.class.getResourceAsStream(file));
}
Map customProperties(String file) throws IOException {
return loadProperties(new FileInputStream(file));
}
private Map loadProperties(InputStream inputStream) throws IOException {
Properties properties = new Properties();
properties.load(inputStream);
return toMap(properties);
}
Map systemProperties() {
return toMap(System.getProperties());
}
Map environmentVariables() {
return System.getenv();
}
private static Map toMap(Properties properties) {
return properties.stringPropertyNames().stream()
.collect(Collectors.toMap(Function.identity(), properties::getProperty));
}
}