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/*-
* ============LICENSE_START=======================================================
* org.onap.dcaegen2.collectors.ves
* ================================================================================
* Copyright (C) 2017-2018 AT&T Intellectual Property. All rights reserved.
* Copyright (C) 2020 Nokia. 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.dcae.configuration;
import static io.vavr.API.Try;
import static org.onap.dcae.common.publishing.VavrUtils.enhanceError;
import static org.onap.dcae.common.publishing.VavrUtils.f;
import static org.onap.dcae.common.publishing.VavrUtils.logError;
import static org.onap.dcae.configuration.Conversions.toList;
import io.vavr.CheckedRunnable;
import io.vavr.Tuple2;
import io.vavr.collection.Map;
import io.vavr.control.Try;
import java.io.FileNotFoundException;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Path;
import org.apache.commons.configuration.ConfigurationException;
import org.apache.commons.configuration.PropertiesConfiguration;
import org.json.JSONObject;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* ConfigFilesFacade is used for reading and writing application properties and dmaap configuration.
*/
public class ConfigFilesFacade {
private static final Logger log = LoggerFactory.getLogger(ConfigFilesFacade.class);
private Path dmaapConfigPath;
private Path propertiesPath;
ConfigFilesFacade(Path propertiesPath, Path dMaaPConfigPath) {
this.propertiesPath = propertiesPath;
this.dmaapConfigPath = dMaaPConfigPath;
}
/**
* Set new paths
* @param propertiesFile application property file
* @param dmaapConfigFile dmaap configuration file
*/
public void setPaths(Path propertiesFile, Path dmaapConfigFile) {
this.propertiesPath = propertiesFile;
this.dmaapConfigPath = dmaapConfigFile;
}
Try<Map<String, String>> readCollectorProperties() {
log.info(f("Reading collector properties from path: '%s'", propertiesPath));
return Try(this::readProperties)
.map(prop -> toList(prop.getKeys()).toMap(k -> k, k -> (String) prop.getProperty(k)))
.mapFailure(enhanceError("Unable to read properties configuration from path '%s'", propertiesPath))
.onFailure(logError(log))
.peek(props -> log.info(f("Read following collector properties: '%s'", props)));
}
Try<JSONObject> readDMaaPConfiguration() {
log.info(f("Reading DMaaP configuration from file: '%s'", dmaapConfigPath));
return readFile(dmaapConfigPath)
.recover(FileNotFoundException.class, __ -> "{}")
.mapFailure(enhanceError("Unable to read DMaaP configuration from file '%s'", dmaapConfigPath))
.flatMap(Conversions::toJson)
.onFailure(logError(log))
.peek(props -> log.info(f("Read following DMaaP properties: '%s'", props)));
}
Try<Void> writeDMaaPConfiguration(JSONObject dMaaPConfiguration) {
log.info(f("Writing DMaaP configuration '%s' into file '%s'", dMaaPConfiguration, dmaapConfigPath));
return writeFile(dmaapConfigPath, indentConfiguration(dMaaPConfiguration.toString()))
.mapFailure(enhanceError("Could not save new DMaaP configuration to path '%s'", dmaapConfigPath))
.onFailure(logError(log))
.peek(__ -> log.info("Written successfully"));
}
Try<Void> writeProperties(Map<String, String> properties) {
log.info(f("Writing properties configuration '%s' into file '%s'", properties, propertiesPath));
return Try.run(saveProperties(properties))
.mapFailure(enhanceError("Could not save properties to path '%s'", properties))
.onFailure(logError(log))
.peek(__ -> log.info("Written successfully"));
}
private Try<String> readFile(Path path) {
return Try(() -> new String(Files.readAllBytes(path), StandardCharsets.UTF_8))
.mapFailure(enhanceError("Could not read content from path: '%s'", path));
}
private Try<Void> writeFile(Path path, String content) {
return Try.run(() -> Files.write(path, content.getBytes()))
.mapFailure(enhanceError("Could not write content to path: '%s'", path));
}
private PropertiesConfiguration readProperties() throws ConfigurationException {
PropertiesConfiguration propertiesConfiguration = new PropertiesConfiguration();
propertiesConfiguration.setDelimiterParsingDisabled(true);
propertiesConfiguration.load(propertiesPath.toFile());
return propertiesConfiguration;
}
private CheckedRunnable saveProperties(Map<String, String> properties) {
return () -> {
PropertiesConfiguration propertiesConfiguration = new PropertiesConfiguration(propertiesPath.toFile());
propertiesConfiguration.setEncoding(null);
for (Tuple2<String, String> property : properties) {
updateProperty(propertiesConfiguration, property);
}
propertiesConfiguration.save();
};
}
private void updateProperty(PropertiesConfiguration propertiesConfiguration, Tuple2<String, String> property) {
if (propertiesConfiguration.containsKey(property._1)) {
propertiesConfiguration.setProperty(property._1, property._2);
} else {
propertiesConfiguration.addProperty(property._1, property._2);
}
}
private String indentConfiguration(String configuration) {
return new JSONObject(configuration).toString(4);
}
}
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