2010-10-15 10:10:44 +03:00
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using System;
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using System.Diagnostics;
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using System.IO;
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using System.Linq;
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2011-04-22 05:23:31 +03:00
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using System.Net;
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using System.Timers;
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2010-10-21 04:49:23 +03:00
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using System.Xml.Linq;
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using System.Xml.XPath;
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2010-10-15 10:10:44 +03:00
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using NLog;
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namespace NzbDrone
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{
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2011-04-10 05:44:01 +03:00
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internal class IISController
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2010-10-15 10:10:44 +03:00
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{
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private static readonly Logger IISLogger = LogManager.GetLogger("IISExpress");
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private static readonly Logger Logger = LogManager.GetLogger("IISController");
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private static readonly string IISFolder = Path.Combine(Config.ProjectRoot, @"IISExpress\");
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private static readonly string IISExe = Path.Combine(IISFolder, @"iisexpress.exe");
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2011-04-22 05:23:31 +03:00
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private static Timer _pingTimer;
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private static int _pingFailCounter;
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2011-04-10 05:44:01 +03:00
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public static Process IISProcess { get; private set; }
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2010-10-15 10:10:44 +03:00
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internal static string AppUrl
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{
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get { return string.Format("http://localhost:{0}/", Config.Port); }
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}
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internal static Process StartIIS()
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{
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Logger.Info("Preparing IISExpress Server...");
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IISProcess = new Process();
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IISProcess.StartInfo.FileName = IISExe;
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2010-10-17 20:22:48 +03:00
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IISProcess.StartInfo.Arguments = "/config:IISExpress\\Appserver\\applicationhost.config /trace:i";
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2010-10-15 10:10:44 +03:00
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IISProcess.StartInfo.WorkingDirectory = Config.ProjectRoot;
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IISProcess.StartInfo.UseShellExecute = false;
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IISProcess.StartInfo.RedirectStandardOutput = true;
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IISProcess.StartInfo.RedirectStandardError = true;
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IISProcess.StartInfo.CreateNoWindow = true;
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2010-10-17 20:22:48 +03:00
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IISProcess.OutputDataReceived += (OnDataReceived);
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2010-10-15 10:10:44 +03:00
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IISProcess.ErrorDataReceived += ((s, e) => IISLogger.Fatal(e.Data));
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2010-10-17 20:22:48 +03:00
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2010-10-15 10:10:44 +03:00
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//Set Variables for the config file.
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Environment.SetEnvironmentVariable("NZBDRONE_PATH", Config.ProjectRoot);
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2010-10-21 04:49:23 +03:00
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try
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{
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UpdateIISConfig();
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}
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catch (Exception e)
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{
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2011-04-20 10:44:13 +03:00
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Logger.ErrorException("An error has occurred while trying to update the config file.", e);
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2010-10-21 04:49:23 +03:00
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}
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2010-10-15 10:10:44 +03:00
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Logger.Info("Starting process. [{0}]", IISProcess.StartInfo.FileName);
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IISProcess.Start();
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IISProcess.BeginErrorReadLine();
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IISProcess.BeginOutputReadLine();
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2011-04-22 05:23:31 +03:00
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StartPing();
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2010-10-15 10:10:44 +03:00
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return IISProcess;
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}
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2011-04-22 05:23:31 +03:00
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private static void StartPing()
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{
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_pingTimer = new Timer(10000);
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_pingTimer.AutoReset = true;
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_pingTimer.Elapsed += (PingIIS);
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_pingTimer.Start();
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}
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private static void PingIIS(object sender, ElapsedEventArgs e)
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{
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try
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{
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var webClient = new WebClient();
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webClient.DownloadString(AppUrl);
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Logger.Info("Server said hai...");
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_pingFailCounter = 0;
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}
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catch (Exception ex)
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{
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_pingFailCounter++;
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Logger.ErrorException("App is not responding. Count " + _pingFailCounter, ex);
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if (_pingFailCounter > 3)
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{
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_pingTimer.Stop();
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Logger.Warn("Attempting to restart server.");
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StopIIS();
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KillOrphaned();
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StartIIS();
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}
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}
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}
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2010-10-17 20:22:48 +03:00
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private static void OnDataReceived(object s, DataReceivedEventArgs e)
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{
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2011-04-10 05:44:01 +03:00
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if (e == null || e.Data == null || e.Data.StartsWith("Request started:") ||
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e.Data.StartsWith("Request ended:") || e.Data == ("IncrementMessages called"))
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2010-10-17 20:22:48 +03:00
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return;
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IISLogger.Trace(e.Data);
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}
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2010-10-15 10:10:44 +03:00
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internal static void StopIIS()
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{
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KillProcess(IISProcess);
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}
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internal static void KillOrphaned()
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{
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Logger.Info("Finding orphaned IIS Processes.");
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foreach (var process in Process.GetProcessesByName("IISExpress"))
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{
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string processPath = process.MainModule.FileName;
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Logger.Info("[{0}]IIS Process found. Path:{1}", process.Id, processPath);
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if (CleanPath(processPath) == CleanPath(IISExe))
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{
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Logger.Info("[{0}]Process is considered orphaned.", process.Id);
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KillProcess(process);
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}
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else
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{
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Logger.Info("[{0}]Process has a different start-up path. skipping.", process.Id);
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}
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}
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}
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private static void KillProcess(Process process)
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{
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2011-04-22 05:23:31 +03:00
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if (process != null && !process.HasExited)
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{
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Logger.Info("[{0}]Killing process", process.Id);
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process.Kill();
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Logger.Info("[{0}]Waiting for exit", process.Id);
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process.WaitForExit();
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Logger.Info("[{0}]Process terminated successfully", process.Id);
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}
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2010-10-15 10:10:44 +03:00
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}
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private static void UpdateIISConfig()
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{
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2010-10-21 04:49:23 +03:00
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string configPath = Path.Combine(IISFolder, @"AppServer\applicationhost.config");
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Logger.Info(@"Server configuration file: {0}", configPath);
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2010-10-15 10:10:44 +03:00
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Logger.Info(@"Configuring server to: [http://localhost:{0}]", Config.Port);
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2010-10-21 04:49:23 +03:00
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var configXml = XDocument.Load(configPath);
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2011-04-10 05:44:01 +03:00
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var bindings =
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configXml.XPathSelectElement("configuration/system.applicationHost/sites").Elements("site").Where(
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d => d.Attribute("name").Value.ToLowerInvariant() == "nzbdrone").First().Element("bindings");
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2010-10-21 04:49:23 +03:00
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bindings.Descendants().Remove();
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bindings.Add(
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2011-04-10 05:44:01 +03:00
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new XElement("binding",
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new XAttribute("protocol", "http"),
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new XAttribute("bindingInformation", String.Format("*:{0}:", Config.Port))
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));
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2010-10-21 04:49:23 +03:00
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configXml.Save(configPath);
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2010-10-15 10:10:44 +03:00
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}
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private static string CleanPath(string path)
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{
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return path.ToLower().Replace("\\", "").Replace("//", "//");
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}
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2011-04-22 05:23:31 +03:00
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2010-10-15 10:10:44 +03:00
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}
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2011-04-10 05:44:01 +03:00
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}
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