Merge pull request #157 from JamieH/master

Adds a preaction framework so we can run a .bat file before or after compiling the code

README.md

@@ -102,6 +102,9 @@ The service supports updates while running a DreamDaemon instance. Simply instal
 * `RepoKey/`
 	* This contains ssh key information for automatic changelog pushing. 
 
+* `EventHandlers/`
+	* This contains batch files that run after certain events, currently only precompile and postcompile events are implemented. If you'd like an event handler you should create a file in this folder with the following name: `{event_name}.bat` for example: if I want an event handler for precompile, I would name it `precompile.bat`.
+
 * `BYOND/`
 	* This contains the actual BYOND installation the server uses
 

TGServerService/Compiler.cs

@@ -383,6 +383,14 @@ namespace TGServerService
 					}
 				}
 
+				if (!PrecompileHook())
+				{
+					lastCompilerError = "The precompile hook failed";
+					compilerCurrentStatus = TGCompilerStatus.Initialized;   //still fairly valid
+					TGServerService.WriteWarning("Precompile hook failed!", TGServerService.EventID.DMCompileError);
+					return;
+				}
+
 				using (var DM = new Process())  //will kill the process if the thread is terminated
 				{
 					DM.StartInfo.FileName = ByondDirectory + "/bin/dm.exe";
@@ -473,6 +481,13 @@ namespace TGServerService
 							}
 						}
 						var staged = DaemonStatus() != TGDreamDaemonStatus.Offline;
+						if (!PostcompileHook())
+						{
+							lastCompilerError = "The postcompile hook failed";
+							compilerCurrentStatus = TGCompilerStatus.Initialized;   //still fairly valid
+							TGServerService.WriteWarning("Postcompile hook failed!", TGServerService.EventID.DMCompileError);
+							return;
+						}
 						var msg = String.Format("Compile complete!{0}", !staged ? "" : " Server will update next round.");
 						SendMessage("DM: " + msg, ChatMessageType.DeveloperInfo);
 						TGServerService.WriteInfo(msg, TGServerService.EventID.DMCompileSuccess);

TGServerService/PreactionHandler.cs

@@ -0,0 +1,66 @@
+using System;
+using System.Diagnostics;
+using System.IO;
+
+namespace TGServerService
+{
+	// Some useful functions for triggering pre action events
+	partial class TGStationServer
+	{
+		const string EventFolder = "EventHandlers/";
+
+		string GetPath(string eventName)
+		{
+			return string.Format("{0}{1}.bat", EventFolder, eventName);
+		}
+
+		bool EventHandlerExists(string eventName)
+		{
+			return File.Exists(GetPath(eventName));
+		}
+
+		bool HandleEvent(string eventName)
+		{
+			if (!EventHandlerExists(eventName))
+			{
+				// We don't need a handler, so let's just fail semi-silently.
+				TGServerService.WriteWarning(String.Format("Preaction Event: {0} not running due to missing event handler: {1}", eventName, GetPath(eventName)), TGServerService.EventID.PreactionFail);
+				return true;
+			}
+
+			var process = new Process
+			{
+				StartInfo = new ProcessStartInfo
+				{
+					FileName = GetPath(eventName),
+					UseShellExecute = false,
+					RedirectStandardOutput = true,
+					RedirectStandardError = true,
+					CreateNoWindow = true
+				}
+			};
+			process.Start();
+			process.WaitForExit();
+
+			var stdout = process.StandardOutput.ReadToEnd();
+			var stderr = process.StandardError.ReadToEnd();
+
+			TGServerService.WriteInfo(
+				String.Format("Preaction Event: {0} @ {1} ran. Stdout:\n{2}\nStderr:\n{3}", eventName, GetPath(eventName), stdout, stderr),
+				process.ExitCode == 0 ? TGServerService.EventID.PreactionEvent : TGServerService.EventID.PreactionFail
+		   );
+
+			return process.ExitCode == 0 ? true : false;
+		}
+
+		public bool PrecompileHook()
+		{
+			return HandleEvent("precompile");
+		}
+
+		public bool PostcompileHook()
+		{
+			return HandleEvent("postcompile");
+		}
+	}
+}

TGServerService/ServerService.cs

@@ -78,6 +78,8 @@ namespace TGServerService
 			IRCLogModes = 6500,
 			SubmoduleReclone = 6600,
 			Authentication = 6700,
+			PreactionEvent = 6800,
+			PreactionFail = 6900
 		}
 
 		static TGServerService ActiveService;   //So everyone else can write to our eventlog

TGServerService/TGServerService.csproj

@@ -95,6 +95,7 @@
     <Compile Include="InterfaceBase.cs" />
     <Compile Include="IRC.cs" />
     <Compile Include="Interop.cs" />
+    <Compile Include="PreactionHandler.cs" />
     <Compile Include="ProcessExtension.cs" />
     <Compile Include="Properties\Settings.Designer.cs">
       <AutoGen>True</AutoGen>