/*-
 * ============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.brmsInterface;

import org.onap.policy.api.NotificationScheme;
import org.onap.policy.api.PolicyEngine;

//import org.apache.log4j.Logger;

//import org.apache.commons.logging.Log;
//import org.apache.commons.logging.LogFactory;

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;
	
	public static void main(String[] args) throws Exception{
		// Initialize Handler. 
		logger.info("Initializing BRMS Handler");
		BRMSHandler bRMSHandler = null;
		try{
			bRMSHandler = new BRMSHandler(configFile);
		}catch(NullPointerException e){
			logger.error("Check your property file: " + e.getMessage());
			System.exit(1);
		}
		
		// 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(Exception e){
			logger.error(XACMLErrorConstants.ERROR_UNKNOWN+"Error while Initializing Policy Engine "  + e.getMessage()); 
		}
		
		//Keep Running.... 
		Runnable runnable = new Runnable(){
			public void run(){
				while (true){
					try {
						Thread.sleep(30000);
					} catch (InterruptedException e) {
						logger.error(XACMLErrorConstants.ERROR_SYSTEM_ERROR+"Thread Exception " + e.getMessage()); 
					}
				}
			}
		};
		Thread thread = new Thread(runnable);
		thread.start();
	}
	
	public static PolicyEngine getPolicyEngine(){
		return policyEngine;
	}
}