NBloodServerSupervisor/WebInterface/Controllers/NBloodController.cs
CommonLoon102 a6dea8efbc
Mods and home page (#3)
* add some mods

* refactor

* user friendly home page added

* refactor

* update readme

* update readme
2020-01-27 12:23:00 +00:00

123 lines
4.5 KiB
C#

using Common;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Logging;
using Model;
using System;
using System.Diagnostics;
using System.Linq;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Threading;
using WebInterface.Services;
namespace WebInterface.Controllers
{
[ApiController]
public class NBloodController : ControllerBase
{
private static bool _isBusy = false;
private static DateTime _lastRefresh = DateTime.MinValue;
private static ListServersResponse _lastServerList = null;
private readonly ILogger<NBloodController> _logger;
private readonly IConfiguration _config;
private readonly IListServersService _listServersService;
private static readonly Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
private static readonly IPEndPoint webApiListenerEndPoint = new IPEndPoint(IPAddress.Loopback, 11028);
public NBloodController(ILogger<NBloodController> logger, IConfiguration config, IListServersService listServersService)
{
_logger = logger;
_config = config;
_listServersService = listServersService;
}
[HttpGet]
[Route("[controller]/api/startserver")]
public StartServerResponse StartServer([FromQuery] ServerParameters parameters)
{
try
{
Stopwatch sw = Stopwatch.StartNew();
while (_isBusy)
{
Thread.Sleep(TimeSpan.FromSeconds(1));
if (sw.Elapsed.TotalSeconds > 5)
throw new Exception("Request timeout: the previous request hasn't finished yet.");
}
_isBusy = true;
if (parameters.Players < 3)
parameters.Players = 3;
if (parameters.ApiKey != _config.GetValue<string>("ApiKey"))
return new StartServerResponse("Invalid ApiKey.");
string processName = Constants.NBloodExecutable;
int serversRunning = Process.GetProcessesByName(processName).Count();
if (serversRunning >= _config.GetValue<int>("MaximumServers"))
return new StartServerResponse("The maximum number of servers are already running.");
Mod mod = GetMod(parameters.ModName);
int port = PortUtils.GetPort();
var process = Process.Start(NBloodServerStartInfo.Get(parameters.Players, port, mod));
byte[] payload = Encoding.ASCII.GetBytes($"B{port}\t{process.Id}\0");
socket.SendTo(payload, webApiListenerEndPoint);
_logger.LogInformation("Server started waiting for {0} players on port {1}.",
parameters.Players, port);
Thread.Sleep(TimeSpan.FromSeconds(2));
return new StartServerResponse(port) { CommandLine = CommandLineUtils.GetLaunchCommand(HttpContext.Request.Host.Host, port, mod) };
}
catch (Exception ex)
{
_logger.LogError(ex.ToString());
return new StartServerResponse("Unhandled exception has been occured. Check the logs for details.");
}
finally
{
_isBusy = false;
}
}
[HttpGet]
[Route("[controller]/api/listservers")]
public ListServersResponse ListServers()
{
try
{
if (DateTime.UtcNow - _lastRefresh > TimeSpan.FromSeconds(1)
|| _lastServerList == null)
{
_lastServerList = _listServersService.ListServers(HttpContext.Request.Host.Host);
_lastRefresh = DateTime.UtcNow;
}
return _lastServerList;
}
catch (Exception ex)
{
_logger.LogError(ex.ToString());
return new ListServersResponse("Unhandled exception has been occured. Check the logs for details.");
}
}
private Mod GetMod(string modName)
{
if (string.IsNullOrWhiteSpace(modName))
return Constants.SupportedMods["BLOOD"];
if (!Constants.SupportedMods.ContainsKey(modName.ToUpper()))
throw new Exception("This mod is not supported: " + modName);
return Constants.SupportedMods[modName.ToUpper()];
}
}
}