How can I get the variable written on the console in AWS codebuild buildspec

[sprabha1990]

Hi,

My buildspec script runs the dotnet-gitversion tool to get the SemVer value of my dotnet6 package library. I was using the output type as buildserver which write the value in the console as expected. But once the process ends, I can't access the variable. Say the build phase in my buildspec have the following command

build
  commands
    - dotnet-gitversion /output buildserver

It writes all the variables and its values in the console as below:

Executing GenerateSetVersionMessage for 'CodeBuild'.
0.1.2-prerelease.23
Executing GenerateBuildLogOutput for 'CodeBuild'.
GitVersion_Major=0
GitVersion_Minor=1
GitVersion_Patch=2
GitVersion_PreReleaseTag=prerelease.23
GitVersion_PreReleaseTagWithDash=-prerelease.23
GitVersion_PreReleaseLabel=prerelease
GitVersion_PreReleaseLabelWithDash=-prerelease
GitVersion_PreReleaseNumber=23
GitVersion_WeightedPreReleaseNumber=23
GitVersion_BuildMetaData=
GitVersion_BuildMetaDataPadded=
GitVersion_FullBuildMetaData=Branch.stage.Sha.beb4f7f82dcb53bd4ba1c5c02750fd588e7fe38d
GitVersion_MajorMinorPatch=0.1.2
GitVersion_SemVer=0.1.2-prerelease.23
GitVersion_LegacySemVer=0.1.2-prerelease23
GitVersion_LegacySemVerPadded=0.1.2-prerelease0023
GitVersion_AssemblySemVer=0.1.2.0
GitVersion_AssemblySemFileVer=0.1.2.0
GitVersion_FullSemVer=0.1.2-prerelease.23
GitVersion_InformationalVersion=0.1.2-prerelease0023+Build.0.Date.20220524T043135.Branch.unknown.Sha.beb4f7f82dcb53bd4ba1c5c02750fd588e7fe38d
GitVersion_BranchName=stage
GitVersion_EscapedBranchName=stage
GitVersion_Sha=beb4f7f82dcb53bd4ba1c5c02750fd588e7fe38d
GitVersion_ShortSha=beb4f7f
GitVersion_NuGetVersionV2=0.1.2-prerelease0023
GitVersion_NuGetVersion=0.1.2-prerelease0023
GitVersion_NuGetPreReleaseTagV2=prerelease0023
GitVersion_NuGetPreReleaseTag=prerelease0023
GitVersion_VersionSourceSha=b17b9a5e36308ef8294a88dc5ac6a0aff01e71a3
GitVersion_CommitsSinceVersionSource=23
GitVersion_CommitsSinceVersionSourcePadded=0023
GitVersion_UncommittedChanges=0
GitVersion_CommitDate=20220524T043135
Outputting variables to 'gitversion.properties' ...
  INFO [05/24/22 16:45:29:02] Done writing

So, now I'm trying to get the value of GitVersion_SemVerin the post build phase for other operations like packing and pushing the nuget package. But I'm not sure how to get it. Tried several combinations like $GitVersion_SemVer, $(GitVersion_SemVer), etc.

Any help would be much appreciated.

Thanks!

[asbjornu]

From CodeBuild.cs it seems like the versoin variables are written to a file called gitversion.properties:

GitVersion/src/GitVersion.Core/BuildAgents/CodeBuild.cs

Line 13 in 5564596

public CodeBuild(IEnvironment environment, ILog log) : base(environment, log) => WithPropertyFile("gitversion.properties");

GitVersion/src/GitVersion.Core/BuildAgents/CodeBuild.cs

Line 15 in 5564596

public void WithPropertyFile(string propertiesFileName) => this.file = propertiesFileName;

GitVersion/src/GitVersion.Core/BuildAgents/CodeBuild.cs

Lines 33 to 41 in 5564596

	public override void WriteIntegration(Action<string?> writer, VersionVariables variables, bool updateBuildNumber = true)
	{
	if (this.file is null)
	return;
	base.WriteIntegration(writer, variables, updateBuildNumber);
	writer($"Outputting variables to '{this.file}' ... ");
	File.WriteAllLines(this.file, GenerateBuildLogOutput(variables));
	}

[sprabha1990]

Yes! I can able to read the variable from gitversion.properties file using "source" command.

• dotnet-gitversion /output buildserver
• source gitversion.properties

Now I can access SemVer using "$GitVersion_SemVer" in post build phase.

[asbjornu]

Excellent!