Update solution changes detected method in PR/pipelines

[Dave-Robertson92]

Is your feature request related to a problem? Please describe.

Looking at the powershell script File here for how we detect which solutions have changed to manage incrementing the solution/s versioning.

A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]

the current method uses "$resultArray = git show --name-only" , git show generally looks at commit/s in our use.
A Pull request can have multiple commits which I understand can limit your merge options to "squash merge"
if run post Pull request (build), solution/s version will not be tracked in the repo.

Describe the solution you'd like

A separate "Build" as part of the PR policy to manage solution versioning (reason below) .

Note, in the event, two active PRs with the same solution/s there is a chance of them both incrementing to the same version number without being detected, this will prevent the last one to merge into master/main from being deployed succesfully as they could have the same version number. to prevent this, the pull request build policy should be set to "Build expiration" "Immediately when master is updated" so that for the last one to merge into master/main versioning build will be re-ran and incremented

Replace "$resultArray = git show --name-only" with the below, which will instead highlight changes between the pull request source branch and the target branch

$targetbranch = $env:SYSTEM_PULLREQUEST_TARGETBRANCH.replace('refs/heads/', '')
$resultArray = git diff --name-only origin/$targetbranch

add to update solution version number in extracted solutions Solution.xml (source branch) (making sure it does not loop, for example when updated on source branch, it does not re-trigger and increment)

[Dave-Robertson92]

@tdashworth been working on versioning for my own use/implementation of this and have a suggestion on a improvement for solution change detection (in GIT).

What do you think about the solution approach?

cc @ewingjm

[Dave-Robertson92]

managed to get a solution working, some further tweaks to make (naming & simplicity):

Azure DevOps Config:
Pull request build policy on the default branch

• run's anytime the source branch is updated
• expires if the default branch is updated before complete (merged in) say the version number is incremented outside of the PR request on the default branch

(the PowerShell step/ for updating version number will be need removing from the Post PR build for further deployment if used)

Yaml update(add of env:systemtoken for Pushing) :

steps:
        - task: PowerShell@2
          displayName: 'Add build tag for each updated solution'
          inputs:
            targetType: 'filePath'
            errorActionPreference: 'stop'
            filePath: 'pipelines/scripts/Add-BuildTagForEachUpdatedSolution.ps1'
          env:
           SYSTEM_ACCESSTOKEN: $(System.AccessToken)

Script:

$targetbranch =  $env:SYSTEM_PULLREQUEST_TARGETBRANCH.replace('refs/heads/', '')
$resultArray = git diff --name-only  origin/$targetbranch 

[System.Collections.ArrayList]$changedSolutions = @()
$commit = 0

foreach ($_ in $resultArray) {
  if ($_.StartsWith("src/solutions")) {
    $solutionName = $_.Split("/")[2]

    if (!$changedSolutions.Contains($solutionName)) {
      $changedSolutions.Add($solutionName)
      Write-Host "##vso[build.addbuildtag]$solutionName" 
      $solutionxmlPath = 'src/solutions/' + $solutionName + '/Extract/Other/Solution.xml'
      $s = 'origin/' + $targetbranch + ':' + $solutionxmlPath
      [xml]$solutionxmltarget = git show $s
      [xml]$solutionxmlsource = Get-Content -Path  $solutionxmlPath
      $sourceVersion = [version]$solutionxmlsource.ImportExportXml.SolutionManifest.Version
      $tagetVersion = [version]$solutionxmltarget.ImportExportXml.SolutionManifest.Version
      if ($sourceVersion -le $tagetVersion)
      {
       $newVersion  =   [version]::New($tagetVersion.Major,$tagetVersion.Minor,$tagetVersion.Build,$tagetVersion.Revision+1)
       $solutionxmlsource.ImportExportXml.SolutionManifest.Version = [string]$newVersion
       $solutionxmlsource.Save($solutionxmlPath)
        $commit = 1
      }
    }
  }
}
$output = $changedSolutions -Join ','  
Write-Host "##vso[task.setvariable variable=solutionList]$output"
if ( $commit -eq 1 )
{
$un = git show -s --format="<%aN>" 
$ue = git show -s --format="<%aE>" 
git config --global user.email $ue
git config --global user.name $un
git checkout $env:SYSTEM_PULLREQUEST_SOURCEBRANCH.replace('refs/heads/', '')
git add .
git commit  --message "auto-version"
git config --global http.extraheader "AUTHORIZATION: bearer  $env:SYSTEM_ACCESSTOKEN"
git push  
}