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/*-
* ============LICENSE_START=======================================================
* Copyright (C) 2019 Nordix Foundation.
* Modifications Copyright (C) 2019 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.
*
* SPDX-License-Identifier: Apache-2.0
* ============LICENSE_END=========================================================
*/
package org.onap.policy.common.endpoints.utils;
import java.beans.IntrospectionException;
import java.beans.PropertyDescriptor;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.util.List;
import java.util.Properties;
import org.apache.commons.lang3.StringUtils;
import org.onap.policy.common.endpoints.event.comm.bus.internal.BusTopicParams;
import org.onap.policy.common.endpoints.parameters.TopicParameterGroup;
import org.onap.policy.common.endpoints.parameters.TopicParameters;
import org.onap.policy.common.endpoints.properties.PolicyEndPointProperties;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* This is common utility class with utility methods for parameters.
*
* @author Ajith Sreekumar (ajith.sreekumar@est.tech)
*/
public class ParameterUtils {
/**
* Logger.
*/
private static final Logger logger = LoggerFactory.getLogger(ParameterUtils.class);
/**
* Private constructor used to prevent sub class instantiation.
*/
private ParameterUtils() {
// Prevent construction of this class
}
/**
* Create topic properties object from the parameters.
*
* @param topicParameters the topic parameters read from config file
* @return the topic properties object
*/
public static Properties getTopicProperties(TopicParameterGroup topicParameters) {
Properties topicProperties = new Properties();
List<TopicParameters> topicSources = topicParameters.getTopicSources();
List<TopicParameters> topicSinks = topicParameters.getTopicSinks();
// for each topicCommInfrastructure, there could be multiple topics (specified as comma separated string)
// for each such topics, there could be multiple servers (specified as comma separated string)
for (TopicParameters source : topicSources) {
updateTopicProperties(topicProperties, "source", source);
}
for (TopicParameters sink : topicSinks) {
updateTopicProperties(topicProperties, "sink", sink);
}
return topicProperties;
}
/**
* Common method to update topic properties object using the parameters passed.
*
* @param topicProperties the topic properties object which is to be updated
* @param keyName either it is source or sink
* @param topicParameters the topic parameters object
*/
public static void updateTopicProperties(Properties topicProperties, String keyName,
TopicParameters topicParameters) {
String topicCommInfra = topicParameters.getTopicCommInfrastructure();
String topicName = topicParameters.getTopic();
List<String> servers = topicParameters.getServers();
String propKey = topicCommInfra + "." + keyName + PolicyEndPointProperties.PROPERTY_TOPIC_TOPICS_SUFFIX;
if (topicProperties.containsKey(propKey)) {
topicProperties.setProperty(propKey, topicProperties.getProperty(propKey) + "," + topicName);
} else {
topicProperties.setProperty(propKey, topicName);
}
String propWithTopicKey = propKey + "." + topicName;
topicProperties.setProperty(propWithTopicKey + PolicyEndPointProperties.PROPERTY_TOPIC_SERVERS_SUFFIX,
String.join(",", servers));
Field[] fields = BusTopicParams.class.getDeclaredFields();
for (Field field : fields) {
if (field.isSynthetic()) {
continue;
}
try {
Object parameter = new PropertyDescriptor(field.getName(), TopicParameters.class)
.getReadMethod().invoke(topicParameters);
if ((parameter instanceof String && StringUtils.isNotBlank(parameter.toString()))
|| (parameter instanceof Number && ((Number) parameter).longValue() > 0)) {
topicProperties.setProperty(propWithTopicKey + "." + field.getName(), parameter.toString());
}
if (parameter instanceof Boolean && (Boolean) parameter) {
topicProperties.setProperty(propWithTopicKey + "." + field.getName(),
Boolean.toString((Boolean) parameter));
}
} catch (IllegalAccessException | IllegalArgumentException | InvocationTargetException
| IntrospectionException e) {
logger.error("Error while creating Properties object from TopicParameters for {}", field.getName(), e);
}
}
}
}
|
