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/*-
* ============LICENSE_START=======================================================
* Copyright (C) 2016-2018 Ericsson. 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.apex.tools.model.generator.model2event;
import java.io.PrintStream;
import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.HelpFormatter;
import org.onap.policy.apex.model.basicmodel.concepts.ApexException;
import org.onap.policy.apex.tools.common.CliOptions;
import org.onap.policy.apex.tools.common.CliParser;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Model 2 event generator with main method.
*
* @author Sven van der Meer (sven.van.der.meer@ericsson.com)
*/
public final class Application {
// Get a reference to the logger
private static final Logger LOGGER = LoggerFactory.getLogger(Application.class);
/** The name of the application. */
public static final String APP_NAME = "gen-model2event";
/** The description 1-liner of the application. */
public static final String APP_DESCRIPTION = "generates JSON templates for events generated from a policy model";
// Input and output streams
private static final PrintStream OUT_STREAM = System.out;
private static final PrintStream ERR_STREAM = System.err;
/** Private constructor to prevent instantiation. */
private Application() {
}
/**
* Main method to start the application.
*
* @param args the command line arguments
*/
public static void main(final String[] args) {
final CliParser cli = new CliParser();
cli.addOption(CliOptions.HELP);
cli.addOption(CliOptions.VERSION);
cli.addOption(CliOptions.MODELFILE);
cli.addOption(CliOptions.TYPE);
final CommandLine cmd = cli.parseCli(args);
// help is an exit option, print usage and exit
if (cmd.hasOption('h') || cmd.hasOption("help")) {
final HelpFormatter formatter = new HelpFormatter();
OUT_STREAM.println(APP_NAME + " v" + cli.getAppVersion() + " - " + APP_DESCRIPTION);
formatter.printHelp(APP_NAME, cli.getOptions());
OUT_STREAM.println();
return;
}
// version is an exit option, print version and exit
if (cmd.hasOption('v') || cmd.hasOption("version")) {
OUT_STREAM.println(APP_NAME + " " + cli.getAppVersion());
OUT_STREAM.println();
return;
}
generateJsonEventScheam(cmd);
}
/**
* Generate the JSON event schema.
*
* @param cmd the command to run
*/
private static void generateJsonEventScheam(final CommandLine cmd) {
String modelFile = cmd.getOptionValue('m');
if (modelFile == null) {
modelFile = cmd.getOptionValue("model");
}
if (modelFile == null) {
ERR_STREAM.println(APP_NAME + ": no model file given, cannot proceed (try -h for help)");
return;
}
String type = cmd.getOptionValue('t');
if (type == null) {
type = cmd.getOptionValue("type");
}
if (type == null) {
ERR_STREAM.println(APP_NAME + ": no event type given, cannot proceed (try -h for help)");
return;
}
if (!"stimuli".equals(type) && !"response".equals(type) && !"internal".equals(type)) {
ERR_STREAM.println(APP_NAME + ": unknown type <" + type + ">, cannot proceed (try -h for help)");
return;
}
OUT_STREAM.println();
OUT_STREAM.println(APP_NAME + ": starting Event generator");
OUT_STREAM.println(" --> model file: " + modelFile);
OUT_STREAM.println(" --> type: " + type);
OUT_STREAM.println();
OUT_STREAM.println();
try {
final Model2JsonEventSchema app = new Model2JsonEventSchema(modelFile, type, APP_NAME);
app.runApp();
} catch (final ApexException aex) {
String message = APP_NAME + ": caught APEX exception with message: " + aex.getMessage();
ERR_STREAM.println(message);
LOGGER.warn(message, aex);
}
}
}
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