Revert the changes introduced by the flow of the arcade

eng/common/post-build/add-build-to-channel.ps1

@@ -0,0 +1,48 @@
+param(
+  [Parameter(Mandatory=$true)][int] $BuildId,
+  [Parameter(Mandatory=$true)][int] $ChannelId,
+  [Parameter(Mandatory=$true)][string] $MaestroApiAccessToken,
+  [Parameter(Mandatory=$false)][string] $MaestroApiEndPoint = 'https://maestro.dot.net',
+  [Parameter(Mandatory=$false)][string] $MaestroApiVersion = '2019-01-16'
+)
+
+try {
+  . $PSScriptRoot\post-build-utils.ps1
+
+  # Check that the channel we are going to promote the build to exist
+  $channelInfo = Get-MaestroChannel -ChannelId $ChannelId
+
+  if (!$channelInfo) {
+    Write-PipelineTelemetryCategory -Category 'PromoteBuild' -Message "Channel with BAR ID $ChannelId was not found in BAR!"
+    ExitWithExitCode 1
+  }
+
+  # Get info about which channel(s) the build has already been promoted to
+  $buildInfo = Get-MaestroBuild -BuildId $BuildId
+
+  if (!$buildInfo) {
+    Write-PipelineTelemetryError -Category 'PromoteBuild' -Message "Build with BAR ID $BuildId was not found in BAR!"
+    ExitWithExitCode 1
+  }
+
+  # Find whether the build is already assigned to the channel or not
+  if ($buildInfo.channels) {
+    foreach ($channel in $buildInfo.channels) {
+      if ($channel.Id -eq $ChannelId) {
+        Write-Host "The build with BAR ID $BuildId is already on channel $ChannelId!"
+        ExitWithExitCode 0
+      }
+    }
+  }
+
+  Write-Host "Promoting build '$BuildId' to channel '$ChannelId'."
+
+  Assign-BuildToChannel -BuildId $BuildId -ChannelId $ChannelId
+
+  Write-Host 'done.'
+} 
+catch {
+  Write-Host $_
+  Write-PipelineTelemetryError -Category 'PromoteBuild' -Message "There was an error while trying to promote build '$BuildId' to channel '$ChannelId'"
+  ExitWithExitCode 1
+}

eng/common/post-build/check-channel-consistency.ps1

@@ -4,15 +4,7 @@ param(
 )
 
 try {
-  $ErrorActionPreference = 'Stop'
-  Set-StrictMode -Version 2.0
-
-  # `tools.ps1` checks $ci to perform some actions. Since the post-build
-  # scripts don't necessarily execute in the same agent that run the
-  # build.ps1/sh script this variable isn't automatically set.
-  $ci = $true
-  $disableConfigureToolsetImport = $true
-  . $PSScriptRoot\..\tools.ps1
+  . $PSScriptRoot\post-build-utils.ps1
 
   if ($PromoteToChannels -eq "") {
     Write-PipelineTaskError -Type 'warning' -Message "This build won't publish assets as it's not configured to any Maestro channel. If that wasn't intended use Darc to configure a default channel using add-default-channel for this branch or to promote it to a channel using add-build-to-channel. See https://github.com/dotnet/arcade/blob/master/Documentation/Darc.md#assigning-an-individual-build-to-a-channel for more info."

eng/common/post-build/nuget-validation.ps1

@@ -2,11 +2,20 @@
 # tool: https://github.com/NuGet/NuGetGallery/tree/jver-verify/src/VerifyMicrosoftPackage
 
 param(
-  [Parameter(Mandatory=$true)][string] $PackagesPath # Path to where the packages to be validated are
+  [Parameter(Mandatory=$true)][string] $PackagesPath,           # Path to where the packages to be validated are
+  [Parameter(Mandatory=$true)][string] $ToolDestinationPath     # Where the validation tool should be downloaded to
 )
 
 try {
-  & $PSScriptRoot\nuget-verification.ps1 ${PackagesPath}\*.nupkg
+  . $PSScriptRoot\post-build-utils.ps1
+
+  $url = 'https://raw.githubusercontent.com/NuGet/NuGetGallery/3e25ad135146676bcab0050a516939d9958bfa5d/src/VerifyMicrosoftPackage/verify.ps1'
+
+  New-Item -ItemType 'directory' -Path ${ToolDestinationPath} -Force
+
+  Invoke-WebRequest $url -OutFile ${ToolDestinationPath}\verify.ps1 
+
+  & ${ToolDestinationPath}\verify.ps1 ${PackagesPath}\*.nupkg
 } 
 catch {
   Write-Host $_.ScriptStackTrace

eng/common/post-build/post-build-utils.ps1

@@ -0,0 +1,91 @@
+# Most of the functions in this file require the variables `MaestroApiEndPoint`, 
+# `MaestroApiVersion` and `MaestroApiAccessToken` to be globally available.
+
+$ErrorActionPreference = 'Stop'
+Set-StrictMode -Version 2.0
+
+# `tools.ps1` checks $ci to perform some actions. Since the post-build
+# scripts don't necessarily execute in the same agent that run the
+# build.ps1/sh script this variable isn't automatically set.
+$ci = $true
+$disableConfigureToolsetImport = $true
+. $PSScriptRoot\..\tools.ps1
+
+function Create-MaestroApiRequestHeaders([string]$ContentType = 'application/json') {
+  Validate-MaestroVars
+
+  $headers = New-Object 'System.Collections.Generic.Dictionary[[String],[String]]'
+  $headers.Add('Accept', $ContentType)
+  $headers.Add('Authorization',"Bearer $MaestroApiAccessToken")
+  return $headers
+}
+
+function Get-MaestroChannel([int]$ChannelId) {
+  Validate-MaestroVars
+
+  $apiHeaders = Create-MaestroApiRequestHeaders
+  $apiEndpoint = "$MaestroApiEndPoint/api/channels/${ChannelId}?api-version=$MaestroApiVersion"
+
+  $result = try { Invoke-WebRequest -Method Get -Uri $apiEndpoint -Headers $apiHeaders | ConvertFrom-Json } catch { Write-Host "Error: $_" }
+  return $result
+}
+
+function Get-MaestroBuild([int]$BuildId) {
+  Validate-MaestroVars
+
+  $apiHeaders = Create-MaestroApiRequestHeaders -AuthToken $MaestroApiAccessToken
+  $apiEndpoint = "$MaestroApiEndPoint/api/builds/${BuildId}?api-version=$MaestroApiVersion"
+
+  $result = try { return Invoke-WebRequest -Method Get -Uri $apiEndpoint -Headers $apiHeaders | ConvertFrom-Json } catch { Write-Host "Error: $_" }
+  return $result
+}
+
+function Get-MaestroSubscriptions([string]$SourceRepository, [int]$ChannelId) {
+  Validate-MaestroVars
+
+  $SourceRepository = [System.Web.HttpUtility]::UrlEncode($SourceRepository) 
+  $apiHeaders = Create-MaestroApiRequestHeaders -AuthToken $MaestroApiAccessToken
+  $apiEndpoint = "$MaestroApiEndPoint/api/subscriptions?sourceRepository=$SourceRepository&channelId=$ChannelId&api-version=$MaestroApiVersion"
+
+  $result = try { Invoke-WebRequest -Method Get -Uri $apiEndpoint -Headers $apiHeaders | ConvertFrom-Json } catch { Write-Host "Error: $_" }
+  return $result
+}
+
+function Assign-BuildToChannel([int]$BuildId, [int]$ChannelId) {
+  Validate-MaestroVars
+
+  $apiHeaders = Create-MaestroApiRequestHeaders -AuthToken $MaestroApiAccessToken
+  $apiEndpoint = "$MaestroApiEndPoint/api/channels/${ChannelId}/builds/${BuildId}?api-version=$MaestroApiVersion"
+  Invoke-WebRequest -Method Post -Uri $apiEndpoint -Headers $apiHeaders | Out-Null
+}
+
+function Trigger-Subscription([string]$SubscriptionId) {
+  Validate-MaestroVars
+
+  $apiHeaders = Create-MaestroApiRequestHeaders -AuthToken $MaestroApiAccessToken
+  $apiEndpoint = "$MaestroApiEndPoint/api/subscriptions/$SubscriptionId/trigger?api-version=$MaestroApiVersion"
+  Invoke-WebRequest -Uri $apiEndpoint -Headers $apiHeaders -Method Post | Out-Null
+}
+
+function Validate-MaestroVars {
+  try {
+    Get-Variable MaestroApiEndPoint | Out-Null
+    Get-Variable MaestroApiVersion | Out-Null
+    Get-Variable MaestroApiAccessToken | Out-Null
+
+    if (!($MaestroApiEndPoint -Match '^http[s]?://maestro-(int|prod).westus2.cloudapp.azure.com$')) {
+      Write-PipelineTelemetryError -Category 'MaestroVars' -Message "MaestroApiEndPoint is not a valid Maestro URL. '$MaestroApiEndPoint'"
+      ExitWithExitCode 1  
+    }
+
+    if (!($MaestroApiVersion -Match '^[0-9]{4}-[0-9]{2}-[0-9]{2}$')) {
+      Write-PipelineTelemetryError -Category 'MaestroVars' -Message "MaestroApiVersion does not match a version string in the format yyyy-MM-DD. '$MaestroApiVersion'"
+      ExitWithExitCode 1
+    }
+  }
+  catch {
+    Write-PipelineTelemetryError -Category 'MaestroVars' -Message 'Error: Variables `MaestroApiEndPoint`, `MaestroApiVersion` and `MaestroApiAccessToken` are required while using this script.'
+    Write-Host $_
+    ExitWithExitCode 1
+  }
+}

eng/common/post-build/publish-using-darc.ps1

@@ -9,12 +9,7 @@ param(
 )
 
 try {
-  # `tools.ps1` checks $ci to perform some actions. Since the post-build
-  # scripts don't necessarily execute in the same agent that run the
-  # build.ps1/sh script this variable isn't automatically set.
-  $ci = $true
-  $disableConfigureToolsetImport = $true
-  . $PSScriptRoot\..\tools.ps1
+  . $PSScriptRoot\post-build-utils.ps1
 
   $darc = Get-Darc
 

eng/common/post-build/sourcelink-validation.ps1

@@ -6,15 +6,7 @@ param(
   [Parameter(Mandatory=$true)][string] $SourcelinkCliVersion    # Version of SourceLink CLI to use
 )
 
-$ErrorActionPreference = 'Stop'
-Set-StrictMode -Version 2.0
-
-# `tools.ps1` checks $ci to perform some actions. Since the post-build
-# scripts don't necessarily execute in the same agent that run the
-# build.ps1/sh script this variable isn't automatically set.
-$ci = $true
-$disableConfigureToolsetImport = $true
-. $PSScriptRoot\..\tools.ps1
+. $PSScriptRoot\post-build-utils.ps1
 
 # Cache/HashMap (File -> Exist flag) used to consult whether a file exist 
 # in the repository at a specific commit point. This is populated by inserting

eng/common/post-build/symbols-validation.ps1

@@ -322,6 +322,8 @@ function InstallDotnetSymbol {
 }
 
 try {
+  . $PSScriptRoot\post-build-utils.ps1
+
   InstallDotnetSymbol
 
   foreach ($Job in @(Get-Job)) {