Implemented assembly versioning with optional Git SHA

closes #9
elastic · Mar 10, 2020 · cb7e411 · cb7e411
1 parent 4787584
commit cb7e411
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Showing 2 changed files with 33 additions and 3 deletions.
diff --git a/Directory.Build.props b/Directory.Build.props
@@ -0,0 +1,24 @@
+<Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+    <!--Elastic Stack version for this release -->
+    <PropertyGroup>
+        <StackVersion>8.0.0</StackVersion>
+    </PropertyGroup>
+
+    <PropertyGroup>
+        <Company>Elastic</Company>
+        <Description>Elastic MSI package build system</Description>
+        <Copyright>(c) $([System.DateTime]::Now.ToString(yyyy)) Elastic</Copyright>
+        <FileVersion>$(StackVersion)</FileVersion>
+        <AssemblyVersion>$(StackVersion)</AssemblyVersion>
+        <InformationalVersion>$(StackVersion)</InformationalVersion>
+
+        <!-- Add commit hash if we can -->
+        <_GitHEADFilename>HEAD</_GitHEADFilename>
+        <_GitSHALength>7</_GitSHALength>
+        <_GitDir Condition="'$(_GitHEADFilename)' != '' And $(_GitSHALength) &gt; 0 And $(_GitSHALength) &lt; 40 And Exists('$(MSBuildThisFileDirectory).git')">$(MSBuildThisFileDirectory).git</_GitDir>
+        <_GitHEAD Condition="'$(_GitDir)' != '' And Exists('$(_GitDir)\$(_GitHEADFilename)')">$([System.IO.File]::ReadAllText('$(_GitDir)\$(_GitHEADFilename)').Trim())</_GitHEAD>
+        <_GitSHA Condition="'$(_GitHEAD)' != '' And '$(_GitHEAD.StartsWith(ref:))' == 'true'">$([System.IO.File]::ReadAllText('$(_GitDir)\$(_GitHEAD.Substring(5))').Substring(0,$(_GitSHALength)))</_GitSHA>
+        <_GitSHA Condition="'$(_GitHEAD)' != '' And '$(_GitHEAD.StartsWith(ref:))' == 'false'">$(_GitHEAD.Substring(0,$(_GitSHALength)))</_GitSHA>
+        <InformationalVersion Condition="'$(_GitSHA)' != ''">$(InformationalVersion)-$(_GitSHA)</InformationalVersion>
+    </PropertyGroup>
+</Project>
diff --git a/src/build/Program.cs b/src/build/Program.cs
@@ -1,5 +1,6 @@
 using System;
 using System.Linq;
+using System.Reflection;
 using System.Threading.Tasks;
 using CommandLine;
 using CommandLine.Text;
@@ -11,6 +12,11 @@ namespace ElastiBuild
 {
     static class Program
     {
+        static readonly string ProductVersion = typeof(Program)
+            .Assembly
+            .GetCustomAttribute<AssemblyInformationalVersionAttribute>()
+            .InformationalVersion;
+
         static async Task Main(string[] args)
         {
             var commands = typeof(Program)
@@ -47,8 +53,8 @@ static Task HandleErrorsAndShowHelp(ParserResult<object> parserResult, Type[] co
 
             var result = parser.ParseArguments<GlobalOptions>(string.Empty.Split(' '));
 
-            HelpText htGlobals = new HelpText(
-                $"ElastiBuild v8.0.0",
+            var htGlobals = new HelpText(
+                "ElastiBuild " + ProductVersion,
                 $"Copyright (c) {DateTime.Now.Year}, https://elastic.co")
             {
                 AdditionalNewLineAfterOption = false,
@@ -65,7 +71,7 @@ static Task HandleErrorsAndShowHelp(ParserResult<object> parserResult, Type[] co
 
             if (isGlobalHelp)
             {
-                var htVerbs = new HelpText()
+                var htVerbs = new HelpText
                 {
                     AddDashesToOption = false,
                     AutoHelp = false,