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/*-
* ============LICENSE_START=======================================================
* Copyright (C) 2021 Nordix Foundation.
* ================================================================================
* 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.clamp.controlloop.participant.simulator.main.startstop;
import java.io.File;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.net.URL;
import java.util.Arrays;
import javax.ws.rs.core.Response;
import lombok.Getter;
import lombok.Setter;
import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.DefaultParser;
import org.apache.commons.cli.HelpFormatter;
import org.apache.commons.cli.Option;
import org.apache.commons.cli.Options;
import org.apache.commons.cli.ParseException;
import org.apache.commons.lang3.StringUtils;
import org.onap.policy.clamp.controlloop.common.exception.ControlLoopException;
import org.onap.policy.clamp.controlloop.common.exception.ControlLoopRuntimeException;
import org.onap.policy.clamp.controlloop.common.startstop.CommonCommandLineArguments;
import org.onap.policy.common.utils.resources.ResourceUtils;
/**
* This class reads and handles command line parameters for the participant simulator service.
*
*/
public class ParticipantSimulatorCommandLineArguments {
private static final String FILE_MESSAGE_PREAMBLE = " file \"";
private static final int HELP_LINE_LENGTH = 120;
private final Options options;
private final CommonCommandLineArguments commonCommandLineArguments;
@Getter()
@Setter()
private String configurationFilePath = null;
/**
* Construct the options for the participant component.
*/
public ParticipantSimulatorCommandLineArguments() {
options = new Options();
commonCommandLineArguments = new CommonCommandLineArguments(options);
}
/**
* Construct the options for the participant component and parse in the given arguments.
*
* @param args The command line arguments
*/
public ParticipantSimulatorCommandLineArguments(final String[] args) {
// Set up the options with the default constructor
this();
// Parse the arguments
try {
parse(args);
} catch (final ControlLoopException e) {
throw new ControlLoopRuntimeException(Response.Status.NOT_ACCEPTABLE,
"parse error on participant parameters", e);
}
}
/**
* Parse the command line options.
*
* @param args The command line arguments
* @return a string with a message for help and version, or null if there is no message
* @throws ControlLoopException on command argument errors
*/
public String parse(final String[] args) throws ControlLoopException {
// Clear all our arguments
setConfigurationFilePath(null);
CommandLine commandLine = null;
try {
commandLine = new DefaultParser().parse(options, args);
} catch (final ParseException e) {
throw new ControlLoopException(Response.Status.NOT_ACCEPTABLE,
"invalid command line arguments specified : " + e.getMessage());
}
// Arguments left over after Commons CLI does its stuff
final String[] remainingArgs = commandLine.getArgs();
if (remainingArgs.length > 0) {
throw new ControlLoopException(Response.Status.NOT_ACCEPTABLE,
"too many command line arguments specified : " + Arrays.toString(args));
}
if (commandLine.hasOption('h')) {
return commonCommandLineArguments.help(Main.class.getName(), options);
}
if (commandLine.hasOption('v')) {
return commonCommandLineArguments.version();
}
if (commandLine.hasOption('c')) {
setConfigurationFilePath(commandLine.getOptionValue('c'));
}
return null;
}
/**
* Validate the command line options.
*
* @throws ControlLoopException on command argument validation errors
*/
public void validate() throws ControlLoopException {
commonCommandLineArguments.validate(configurationFilePath);
}
/**
* Gets the full expanded configuration file path.
*
* @return the configuration file path
*/
public String getFullConfigurationFilePath() {
return ResourceUtils.getFilePath4Resource(getConfigurationFilePath());
}
/**
* Check set configuration file path.
*
* @return true, if check set configuration file path
*/
public boolean checkSetConfigurationFilePath() {
return !StringUtils.isEmpty(configurationFilePath);
}
}
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