/*
* Copyright 2014 the original author or authors.
*
* 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.
*/
package org.springframework.yarn.boot.cli;
import java.util.ArrayList;
import java.util.List;
import org.springframework.boot.cli.command.Command;
import org.springframework.boot.cli.command.CommandRunner;
import org.springframework.boot.cli.command.core.HelpCommand;
import org.springframework.boot.cli.command.core.VersionCommand;
import org.springframework.boot.loader.tools.LogbackInitializer;
/**
* Base Spring YARN Cli implementation.
*
* @author Janne Valkealahti
*
*/
public abstract class AbstractCli {
private final List<Command> commands = new ArrayList<Command>();
/**
* Register command.
*
* @param command the command
*/
protected void registerCommand(Command command) {
commands.add(command);
}
/**
* Register commands.
*
* @param commands the commands
*/
protected void registerCommands(List<Command> commands) {
this.commands.addAll(commands);
}
/**
* Main method which should be called from implementing class.
*
* @param args the program args
*/
protected void doMain(String[] args) {
System.setProperty("java.awt.headless", Boolean.toString(true));
LogbackInitializer.initialize();
CommandRunner runner = new CommandRunner(getMainCommandName());
runner.addCommand(new HelpCommand(runner));
for (Command command : commands) {
runner.addCommand(command);
}
runner.setOptionCommands(HelpCommand.class, VersionCommand.class);
int exitCode = runner.runAndHandleErrors(args);
handleRunnerExitCode(runner, exitCode);
}
protected void handleRunnerExitCode(CommandRunner runner, int exitCode) {
if (exitCode != 0) {
// If successful, leave it to run in case it's a server app
System.exit(exitCode);
}
}
/**
* Get a main command name which can be overwritten
* if default is not suitable for user cli implementation.
*
* @return the main command name
*/
protected String getMainCommandName() {
return "java -jar <jar>";
}
}