2 * ============LICENSE_START=======================================================
3 * Copyright (C) 2018 Samsung Electronics Co., Ltd. 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.api.main.startstop;
23 import org.onap.policy.api.main.PolicyApiException;
24 import org.onap.policy.common.logging.flexlogger.FlexLogger;
25 import org.onap.policy.common.logging.flexlogger.Logger;
26 import org.onap.policy.api.main.parameters.ApiParameterGroup;
27 import org.onap.policy.api.main.parameters.ApiParameterHandler;
29 import java.util.Arrays;
32 * This class initiates ONAP Policy Framework policy api.
36 private static final Logger LOGGER = FlexLogger.getLogger(Main.class);
38 // The policy api Activator that activates the policy api service
39 private ApiActivator activator;
41 // The parameters read in from JSON
42 private ApiParameterGroup parameterGroup;
45 * Instantiates the policy api 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 api service with arguments - " + argumentString);
53 // Check the arguments
54 final ApiCommandLineArguments arguments = new ApiCommandLineArguments();
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 PolicyApiException e) {
66 LOGGER.error("start of policy api service failed", e);
70 // Read the parameters
72 parameterGroup = new ApiParameterHandler().getParameters(arguments);
73 } catch (final Exception e) {
74 LOGGER.error("start of policy api service failed", e);
78 // Now, create the activator for the policy api service
79 activator = new ApiActivator(parameterGroup);
81 // Start the activator
83 activator.initialize();
84 } catch (final PolicyApiException e) {
85 LOGGER.error("start of policy api service failed, used parameters are " + Arrays.toString(args),
90 // Add a shutdown hook to shut everything down in an orderly manner
91 Runtime.getRuntime().addShutdownHook(new PolicyApiShutdownHookClass());
92 LOGGER.info("Started policy api service");
96 * Get the parameters specified in JSON.
98 * @return the parameters
100 public ApiParameterGroup getParameters() {
101 return parameterGroup;
105 * Shut down Execution.
107 * @throws PolicyApiException on shutdown errors
109 public void shutdown() throws PolicyApiException {
110 // clear the parameterGroup variable
111 parameterGroup = null;
113 // clear the api activator
114 if (activator != null) {
115 activator.terminate();
120 * The Class PolicyApiShutdownHookClass terminates the policy api service when its run method is
123 private class PolicyApiShutdownHookClass extends Thread {
127 * @see java.lang.Runnable#run()
132 // Shutdown the policy api service and wait for everything to stop
133 activator.terminate();
134 } catch (final PolicyApiException e) {
135 LOGGER.warn("error occured during shut down of the policy api service", e);
143 * @param args the arguments
145 public static void main(final String[] args) {