Simple Continiuos Integration with FAKE and windows scheduler #fsharp

Below are the details about a very simple CI setup,  the one that simply checks GitHub for changes to ‘master’ and if

there were any, runs FAKE build script.

First FAKE script:

#r @"../_tools/FAKE/FakeLib.dll"
#r @"../_tools/FAKE/MyFakeTasks.dll"
open Fake
open System.IO
open MyFakeTasks
let author = ["Srdjan Strbanovic"]
let release = @".\WinService\bin\release"
let debug = @".\WinService\bin\debug"
let winservice = !! @".\WinService\WinService.csproj"
Target? Clean <-
fun () ->
CleanDirs [release;debug]
Target? Build <-
fun () ->
MSBuildRelease release "Clean" winservice
|> Log "Clean Release Build:"
MSBuildRelease release "Build" winservice
|> Log "Release Build:"
Target? Default <-
fun () -> trace "Finished..."
==> "Build"
=?> ("Default", GitTasks.Pull(@".\") = 1)
Run? Default
view raw build.fsx hosted with ❤ by GitHub

The only part that should be interesting (the rest is standard FAKE) is conditional dependency for ‘Default’ task.

It depends on returned value from a custom FAKE task that checks if there are changes on GitHub.

Here is the custom task:

using System;
using System.Diagnostics;
using System.Linq;
namespace MyFakeTasks
public class GitTasks
public static int Pull(string workingDirectory)
var processStartInfo = new ProcessStartInfo();
processStartInfo.CreateNoWindow = true;
processStartInfo.RedirectStandardError = true;
processStartInfo.RedirectStandardOutput = true;
processStartInfo.FileName = @"C:\Program Files (x86)\Git\bin\git.exe";
processStartInfo.UseShellExecute = false;
var result = gitPull(processStartInfo, workingDirectory);
return result;
static int gitPull(ProcessStartInfo processStartInfo, string workingDirectory)
var process = new Process();
processStartInfo.Arguments = "pull";
processStartInfo.WorkingDirectory = workingDirectory;
process.StartInfo = processStartInfo;
var stdErrStr = process.StandardError.ReadToEnd();
var stdOutStr = process.StandardOutput.ReadToEnd();
Console.Write(stdErrStr.Any() ? stdErrStr : stdOutStr);
return stdOutStr.Contains("Already up-to-date.") ? 0 : 1;
view raw gistfile1.cs hosted with ❤ by GitHub

That is all – “simple” is the keyword  🙂 – here is the screenshot of it running:


Till next time…

One thought on “Simple Continiuos Integration with FAKE and windows scheduler #fsharp

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