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/*-
* ============LICENSE_START=======================================================
* Copyright (C) 2019-2021 AT&T Intellectual Property. All rights reserved.
* Modifications Copyright (C) 2019 Nordix Foundation.
* Modifications Copyright (C) 2020 Bell Canada. 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.pdpx.main.startstop;
import java.util.Arrays;
import lombok.Getter;
import org.onap.policy.common.utils.resources.MessageConstants;
import org.onap.policy.pdpx.main.PolicyXacmlPdpException;
import org.onap.policy.pdpx.main.PolicyXacmlPdpRuntimeException;
import org.onap.policy.pdpx.main.parameters.XacmlPdpParameterGroup;
import org.onap.policy.pdpx.main.parameters.XacmlPdpParameterHandler;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* This class initiates ONAP Policy Framework policy xacml pdp.
*
*/
public class Main {
private static final Logger LOGGER = LoggerFactory.getLogger(Main.class);
// The policy xacml pdp Activator that activates the policy xacml pdp service
private XacmlPdpActivator activator;
@Getter
private String argumentMessage = null;
/**
* Instantiates the policy xacml pdp service.
*
* @param args the command line arguments
* @throws PolicyXacmlPdpException if an error occurs
*/
public Main(final String[] args) throws PolicyXacmlPdpException {
final var argumentString = Arrays.toString(args);
LOGGER.info("Starting policy xacml pdp service with arguments - {}", argumentString);
// Check the arguments
final var arguments = new XacmlPdpCommandLineArguments();
// The arguments return a string if there is a message to print and we should exit
argumentMessage = arguments.parse(args);
if (argumentMessage != null) {
LOGGER.info(argumentMessage);
return;
}
// Validate that the arguments are sane
arguments.validate();
// Read the parameters
XacmlPdpParameterGroup parameterGroup = new XacmlPdpParameterHandler().getParameters(arguments);
// Now, create the activator for the policy xacml pdp service
activator = new XacmlPdpActivator(parameterGroup);
XacmlPdpActivator.setCurrent(activator);
// Start the activator
activator.start();
// Add a shutdown hook to shut everything down in an orderly manner
Runtime.getRuntime().addShutdownHook(new Thread(this::shutdown));
var successMsg = String.format(MessageConstants.START_SUCCESS_MSG, MessageConstants.POLICY_XACML_PDP);
LOGGER.info(successMsg);
}
/**
* Shut down Execution.
*
* @throws PolicyXacmlPdpException on shutdown errors
*/
public synchronized void shutdown() {
// clear the xacml pdp activator
if (activator != null && activator.isAlive()) {
activator.stop();
activator = null;
}
}
/**
* The main method. The NOSONAR is for security hotspot for checking
* command line arguments. Since we use XacmlPdpCommandLineArguments
* and validate the arguments the NOSONAR is ok to clear it.
*
* @param args the arguments
*/
public static void main(final String[] args) { //NOSONAR
try {
new Main(args);
} catch (RuntimeException | PolicyXacmlPdpException e) {
throw new PolicyXacmlPdpRuntimeException(
String.format(MessageConstants.START_FAILURE_MSG, MessageConstants.POLICY_XACML_PDP), e);
}
}
}
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