com.aspectran.undertow.shell.command.UndertowCommand Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2022 The Aspectran Project
*
* 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 com.aspectran.undertow.shell.command;
import com.aspectran.core.component.bean.BeanRegistry;
import com.aspectran.shell.command.AbstractCommand;
import com.aspectran.shell.command.CommandRegistry;
import com.aspectran.shell.command.option.Arguments;
import com.aspectran.shell.command.option.Option;
import com.aspectran.shell.command.option.ParsedOptions;
import com.aspectran.shell.console.Console;
import com.aspectran.shell.service.ShellService;
import com.aspectran.undertow.server.TowServer;
import io.undertow.Version;
import java.net.BindException;
/**
* Use the command 'undertow' to control the Undertow Server.
*/
public class UndertowCommand extends AbstractCommand {
private static final String NAMESPACE = "builtins";
private static final String COMMAND_NAME = "undertow";
private final CommandDescriptor descriptor = new CommandDescriptor();
public UndertowCommand(CommandRegistry registry) {
super(registry);
addOption(Option.builder("server")
.valueName("name")
.withEqualSign()
.desc("ID of bean that defined Undertow server")
.build());
addOption(Option.builder("h")
.longName("help")
.desc("Display help for this command")
.build());
Arguments arguments = touchArguments();
arguments.setTitle("Commands:");
arguments.put("start", "Start Undertow server");
arguments.put("stop", "Stop Undertow server");
arguments.put("restart", "Restart Undertow server");
arguments.put("status", "Display a brief status report");
arguments.setRequired(true);
}
@Override
public void execute(ParsedOptions options, Console console) throws Exception {
if (!options.hasOptions() && !options.hasArgs()) {
printQuickHelp(console);
return;
}
if (options.hasOption("help")) {
printHelp(console);
return;
}
String command = null;
if (options.hasArgs()) {
command = options.getFirstArg();
}
ShellService service = getService();
String serverName = options.getValue("server", "tow.server");
BeanRegistry beanRegistry = service.getActivityContext().getBeanRegistry();
boolean justCreated = !beanRegistry.hasSingleton(TowServer.class, serverName);
if (justCreated) {
if ("stop".equals(command) || "restart".equals(command)) {
console.writeError("Undertow server is not running");
return;
}
}
TowServer towServer;
try {
towServer = beanRegistry.getBean(TowServer.class, serverName);
} catch (Exception e) {
console.writeError("Undertow server is not available. Cause: " + e.getMessage());
return;
}
if (command != null) {
switch (command) {
case "start":
if (!justCreated && towServer.isRunning()) {
console.writeError("Undertow server is already running");
return;
}
try {
if (!towServer.isAutoStart()) {
towServer.start();
}
printStatus(towServer, console);
} catch (BindException e) {
console.writeError("Undertow Server Error - Port already in use");
}
break;
case "stop":
if (!towServer.isRunning()) {
console.writeError("Undertow server is not running");
return;
}
try {
towServer.stop();
printStatus(towServer, console);
beanRegistry.destroySingleton(towServer);
} catch (Exception e) {
console.writeError("Undertow Server Error - " + e.getMessage());
}
break;
case "restart":
try {
if (towServer.isRunning()) {
towServer.stop();
beanRegistry.destroySingleton(towServer);
towServer = beanRegistry.getBean(TowServer.class, serverName);
}
if (!towServer.isAutoStart()) {
towServer.start();
}
printStatus(towServer, console);
} catch (BindException e) {
console.writeError("Undertow Server Error - Port already in use");
}
break;
case "status":
printStatus(towServer, console);
break;
default:
console.writeError("Unknown command '" + String.join(" ", options.getArgs()) + "'");
printQuickHelp(console);
break;
}
} else {
printQuickHelp(console);
}
}
private void printStatus(TowServer towServer, Console console) {
console.writeLine("----------------------------------------------------------------------------");
console.setStyle("YELLOW");
console.write(towServer.getState());
console.styleOff();
console.writeLine(" - Undertow " + Version.getVersionString());
console.writeLine("----------------------------------------------------------------------------");
}
@Override
public Descriptor getDescriptor() {
return descriptor;
}
private static class CommandDescriptor implements Descriptor {
@Override
public String getNamespace() {
return NAMESPACE;
}
@Override
public String getName() {
return COMMAND_NAME;
}
@Override
public String getDescription() {
return "Use the command 'undertow' to control the Undertow server";
}
@Override
public String getUsage() {
return null;
}
}
}