2 * ============LICENSE_START=======================================================
3 * Copyright (C) 2021 Nordix Foundation.
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.clamp.controlloop.runtime.main.startstop;
24 import java.io.PrintWriter;
25 import java.io.StringWriter;
27 import java.util.Arrays;
28 import javax.ws.rs.core.Response;
31 import org.apache.commons.cli.CommandLine;
32 import org.apache.commons.cli.DefaultParser;
33 import org.apache.commons.cli.HelpFormatter;
34 import org.apache.commons.cli.Option;
35 import org.apache.commons.cli.Options;
36 import org.apache.commons.cli.ParseException;
37 import org.apache.commons.lang3.StringUtils;
38 import org.onap.policy.clamp.controlloop.common.exception.ControlLoopException;
39 import org.onap.policy.clamp.controlloop.common.exception.ControlLoopRuntimeException;
40 import org.onap.policy.clamp.controlloop.common.startstop.CommonCommandLineArguments;
41 import org.onap.policy.common.utils.resources.ResourceUtils;
44 * This class reads and handles command line parameters for the control loop runtime service.
46 public class ClRuntimeCommandLineArguments {
47 private static final String FILE_MESSAGE_PREAMBLE = " file \"";
48 private static final int HELP_LINE_LENGTH = 120;
50 private final Options options;
51 private final CommonCommandLineArguments commonCommandLineArguments;
55 private String configurationFilePath = null;
58 * Construct the options for the control loop runtime component.
60 public ClRuntimeCommandLineArguments() {
61 options = new Options();
62 commonCommandLineArguments = new CommonCommandLineArguments(options);
66 * Construct the options for the CLI editor and parse in the given arguments.
68 * @param args The command line arguments
70 public ClRuntimeCommandLineArguments(final String[] args) {
71 // Set up the options with the default constructor
74 // Parse the arguments
77 } catch (final ControlLoopException e) {
78 throw new ControlLoopRuntimeException(Response.Status.NOT_ACCEPTABLE,
79 "parse error on control loop runtime parameters", e);
84 * Parse the command line options.
86 * @param args The command line arguments
87 * @return a string with a message for help and version, or null if there is no message
88 * @throws ControlLoopException on command argument errors
90 public String parse(final String[] args) throws ControlLoopException {
91 // Clear all our arguments
92 setConfigurationFilePath(null);
93 CommandLine commandLine = null;
95 commandLine = new DefaultParser().parse(options, args);
96 } catch (final ParseException e) {
97 throw new ControlLoopException(Response.Status.NOT_ACCEPTABLE,
98 "invalid command line arguments specified : " + e.getMessage());
101 // Arguments left over after Commons CLI does its stuff
102 final String[] remainingArgs = commandLine.getArgs();
104 if (remainingArgs.length > 0) {
105 throw new ControlLoopException(Response.Status.NOT_ACCEPTABLE,
106 "too many command line arguments specified : " + Arrays.toString(args));
109 if (commandLine.hasOption('h')) {
110 return commonCommandLineArguments.help(Main.class.getName(), options);
113 if (commandLine.hasOption('v')) {
114 return commonCommandLineArguments.version();
117 if (commandLine.hasOption('c')) {
118 setConfigurationFilePath(commandLine.getOptionValue('c'));
125 * Validate the command line options.
127 * @throws ControlLoopException on command argument validation errors
129 public void validate() throws ControlLoopException {
130 commonCommandLineArguments.validate(configurationFilePath);
134 * Gets the full expanded configuration file path.
136 * @return the configuration file path
138 public String getFullConfigurationFilePath() {
139 return ResourceUtils.getFilePath4Resource(getConfigurationFilePath());
143 * Sets the configuration file path.
145 * @param configurationFilePath the configuration file path
147 public void setConfigurationFilePath(final String configurationFilePath) {
148 this.configurationFilePath = configurationFilePath;