2 * ============LICENSE_START=======================================================
3 * Copyright (C) 2019 AT&T Intellectual Property. All rights reserved.
4 * ================================================================================
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
17 * SPDX-License-Identifier: Apache-2.0
18 * ============LICENSE_END=========================================================
21 package org.onap.policy.pdpx.main.startstop;
23 import java.util.Arrays;
24 import org.onap.policy.pdpx.main.PolicyXacmlPdpException;
25 import org.onap.policy.pdpx.main.parameters.XacmlPdpParameterGroup;
26 import org.onap.policy.pdpx.main.parameters.XacmlPdpParameterHandler;
27 import org.slf4j.Logger;
28 import org.slf4j.LoggerFactory;
32 * This class initiates ONAP Policy Framework policy xacml pdp.
36 private static final Logger LOGGER = LoggerFactory.getLogger(Main.class);
38 // The policy xacml pdp Activator that activates the policy xacml pdp service
39 private XacmlPdpActivator activator;
41 // The parameters read in from JSON
42 private XacmlPdpParameterGroup parameterGroup;
45 * Instantiates the policy xacml pdp service.
47 * @param args the command line arguments
49 public Main(final String[] args) {
50 final String argumentString = Arrays.toString(args);
51 LOGGER.info("Starting policy xacml pdp service with arguments - " + argumentString);
53 // Check the arguments
54 final XacmlPdpCommandLineArguments arguments = new XacmlPdpCommandLineArguments();
56 // The arguments return a string if there is a message to print and we should exit
57 final String argumentMessage = arguments.parse(args);
58 if (argumentMessage != null) {
59 LOGGER.info(argumentMessage);
63 // Validate that the arguments are sane
65 } catch (final PolicyXacmlPdpException e) {
66 LOGGER.error("start of policy xacml pdp service failed", e);
70 // Read the parameters
72 parameterGroup = new XacmlPdpParameterHandler().getParameters(arguments);
73 } catch (final Exception e) {
74 LOGGER.error("start of policy xacml pdp service failed", e);
78 // Now, create the activator for the policy xacml pdp service
79 activator = new XacmlPdpActivator(parameterGroup);
81 // Start the activator
83 activator.initialize();
84 } catch (final PolicyXacmlPdpException e) {
85 LOGGER.error("start of policy xacml pdp service failed, used parameters are " + Arrays.toString(args), e);
89 // Add a shutdown hook to shut everything down in an orderly manner
90 Runtime.getRuntime().addShutdownHook(new PolicyXacmlPdpShutdownHookClass());
91 LOGGER.info("Started policy xacml pdp service");
95 * Get the parameters specified in JSON.
97 * @return the parameters
99 public XacmlPdpParameterGroup getParameters() {
100 return parameterGroup;
104 * Shut down Execution.
106 * @throws PolicyXacmlPdpException on shutdown errors
108 public void shutdown() throws PolicyXacmlPdpException {
109 // clear the parameterGroup variable
110 parameterGroup = null;
112 // clear the xacml pdp activator
113 if (activator != null) {
114 activator.terminate();
119 * The Class PolicyXacmlPdpShutdownHookClass terminates the policy xacml pdp service when its run
122 private class PolicyXacmlPdpShutdownHookClass extends Thread {
126 * @see java.lang.Runnable#run()
131 // Shutdown the policy xacml pdp service and wait for everything to stop
132 activator.terminate();
133 } catch (final PolicyXacmlPdpException e) {
134 LOGGER.warn("error occured during shut down of the policy xacml pdp service", e);
142 * @param args the arguments
144 public static void main(final String[] args) {