Add cancel

Core/Remote/IPiscalClient.cs

@@ -8,6 +8,7 @@ namespace LeafWeb.Core.Remote
 		void RunLeafInput(PiscalLeafInput leafInput);
 		PiscalStatus GetLeafInputStatus(PiscalLeafInput leafInput);
 		IEnumerable<PiscalLeafOutputFile> RetrieveLeafOutput(PiscalLeafInput leafInput);
+		void KillLeafProcess(PiscalLeafInput leafInput);
 		void CleanupLeafProcess(PiscalLeafInput leafInput);
 	}
 }

Core/Remote/PiscalClientException.cs

@@ -1,13 +1,27 @@
 using System;
+using LeafWeb.Core.Utility;
+using Renci.SshNet;
 
 namespace LeafWeb.Core.Remote
 {
 	public class PiscalClientException : Exception
 	{
 		public int LeafInputId { get; private set; }
+		public string CommandText { get; private set; }
+
 		public PiscalClientException(int leafInputId, string error) : base(error)
 		{
 			LeafInputId = leafInputId;
 		}
+
+		public PiscalClientException(int leafInputId, SshCommand command) : base(
+			!string.IsNullOrEmpty(command.Error) 
+			? command.Error.TrimEndNewLine()
+			: command.Result.TrimEndNewLine()
+			)
+		{
+			LeafInputId = leafInputId;
+			CommandText = command.CommandText;
+		}
 	}
 }

Core/Remote/PiscalSshClient.cs

@@ -115,7 +115,7 @@ namespace LeafWeb.Core.Remote
 				Disconnect(leafInput, ssh);
 
 				if (command.ExitStatus != 0)
-					throw new PiscalClientException(leafInput.LeafInputId, command.Error.TrimEndNewLine());
+					throw new PiscalClientException(leafInput.LeafInputId, command);
 
 				var result = command.Result.TrimEndNewLine();
 				if (result == "started")
@@ -154,7 +154,7 @@ namespace LeafWeb.Core.Remote
 				Disconnect(leafInput, ssh);
 
 				if (command.ExitStatus != 0)
-					throw new PiscalClientException(leafInput.LeafInputId, command.Error.TrimEndNewLine());
+					throw new PiscalClientException(leafInput.LeafInputId, command);
 
 				return command.Result
 					.SplitNewLine()
@@ -203,7 +203,22 @@ namespace LeafWeb.Core.Remote
 				Disconnect(leafInput, scp);
 			}
 		}
-		
+
+		public void KillLeafProcess(PiscalLeafInput leafInput)
+		{
+			using (var ssh = GetSshClient())
+			{
+				Connect(leafInput, ssh);
+				var commandText = $"{RemoteScriptPath} -d {leafInput.PiscalDirectoryName} -k";
+				var command = ssh.CreateCommand(commandText);
+				command.Execute();
+				Disconnect(leafInput, ssh);
+
+				if (command.ExitStatus != 0)
+					throw new PiscalClientException(leafInput.LeafInputId, command);
+			}
+		}
+
 		public void CleanupLeafProcess(PiscalLeafInput leafInput)
 		{
 			using (var ssh = GetSshClient())
@@ -215,7 +230,7 @@ namespace LeafWeb.Core.Remote
 				Disconnect(leafInput, ssh);
 
 				if (command.ExitStatus != 0)
-					throw new PiscalClientException(leafInput.LeafInputId, command.Error.TrimEndNewLine());
+					throw new PiscalClientException(leafInput.LeafInputId, command);
 			}
 		}
 	}