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/*-
* ============LICENSE_START=======================================================
* ONAP Policy Engine
* ================================================================================
* Copyright (C) 2017 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.policy.brms.api;
import org.onap.policy.api.NotificationScheme;
import org.onap.policy.api.PolicyEngine;
import org.onap.policy.api.PolicyException;
import org.onap.policy.common.logging.flexlogger.FlexLogger;
import org.onap.policy.common.logging.flexlogger.Logger;
import org.onap.policy.xacml.api.XACMLErrorConstants;
/**
* BRMSGateway: This application acts as the Gateway interface between the PDP XACML and PDP Drools.
* The listens for BRMS based policies and pushes them to the specified Policy Repository, from
* where the PDP Drools reads the Rule Jar.
*
* @version 0.1
*/
public class BrmsGateway {
private static final Logger logger = FlexLogger.getLogger(BrmsGateway.class);
private static final String CONFIGFILE = "config.properties";
private static PolicyEngine policyEngine = null;
private BrmsGateway() {
// Default private constructor
}
/**
* Main method.
* @param args The path to the configuration file is the only allowed optional argument
* @throws Exception on BRMS Gateway errors
*/
public static void main(final String[] args) throws Exception {
// The configuration file containing the configuration for the BRMS Gateway
String configFile = CONFIGFILE;
// Check if a configuration file has been specified as a parameter
if (args.length == 1) {
configFile = args[0];
}
else if (args.length > 1) {
String errorString = "usage: " + BrmsGateway.class.getCanonicalName() + " [configFile]";
logger.error(errorString);
throw new PolicyException(errorString);
}
// Initialize Handler.
logger.info("Initializing BRMS Handler");
BrmsHandler brmsHandler = null;
try {
brmsHandler = new BrmsHandler(configFile);
} catch (final PolicyException e) {
String errorString = "Check your property file: " + e.getMessage();
logger.error(errorString);
throw new PolicyException(errorString);
}
// Set Handler with Auto Notification and initialize policyEngine
try {
logger.info("Initializing policyEngine with Auto Notifications");
policyEngine = new PolicyEngine(CONFIGFILE, NotificationScheme.AUTO_ALL_NOTIFICATIONS, brmsHandler);
} catch (final Exception e) {
logger.error(XACMLErrorConstants.ERROR_UNKNOWN + "Error while Initializing Policy Engine " + e.getMessage(),
e);
}
// Keep Running....
final Runnable runnable = () -> {
while (true) {
try {
Thread.sleep(30000);
} catch (final InterruptedException e) {
logger.error(XACMLErrorConstants.ERROR_SYSTEM_ERROR + "Thread Exception " + e.getMessage());
Thread.currentThread().interrupt();
}
}
};
final Thread thread = new Thread(runnable);
thread.start();
}
public static PolicyEngine getPolicyEngine() {
return policyEngine;
}
}
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