functions/Build-DeploymentPlans.ps1
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function Build-DeploymentPlans { <# Builds the deployment plans for the Policy as Code (PAC) environment. Defines which Policy as Code (PAC) environment we are using, if omitted, the script prompts for a value. The values are read from `$DefinitionsRootFolder/global-settings.jsonc. Definitions folder path. Defaults to environment variable `$env:PAC_DEFINITIONS_FOLDER or './Definitions'. Output folder path for plan files. Defaults to environment variable `$env:PAC_OUTPUT_FOLDER or './Output'. Script is used interactively. Script can prompt the interactive user for input. If set, outputs variables consumable by conditions in a DevOps pipeline. Valid values are '', 'ado' and 'gitlab'. .\Build-DeploymentPlans.ps1 -PacEnvironmentSelector "dev" Builds the deployment plans for the Policy as Code (PAC) environment 'dev'. .\Build-DeploymentPlans.ps1 -PacEnvironmentSelector "dev" -DevOpsType "ado" Builds the deployment plans for the Policy as Code (PAC) environment 'dev' and outputs variables consumable by conditions in an Azure DevOps pipeline. https://azure.github.io/enterprise-azure-policy-as-code/#deployment-scripts #> [CmdletBinding()] param ( [parameter(HelpMessage = "Defines which Policy as Code (PAC) environment we are using, if omitted, the script prompts for a value. The values are read from `$DefinitionsRootFolder/global-settings.jsonc.", Position = 0)] [string] $PacEnvironmentSelector, [Parameter(HelpMessage = "Definitions folder path. Defaults to environment variable `$env:PAC_DEFINITIONS_FOLDER or './Definitions'.")] [string]$DefinitionsRootFolder, [Parameter(HelpMessage = "Output folder path for plan files. Defaults to environment variable `$env:PAC_OUTPUT_FOLDER or './Output'.")] [string]$OutputFolder, [Parameter(HelpMessage = "Script is used interactively. Script can prompt the interactive user for input.")] [switch] $Interactive, [Parameter(HelpMessage = "If set, outputs variables consumable by conditions in a DevOps pipeline.")] [ValidateSet("ado", "gitlab", "")] [string] $DevOpsType = "" ) $PSDefaultParameterValues = @{ "Write-Information:InformationVariable" = "+global:epacInfoStream" } Clear-Variable -Name epacInfoStream -Scope global -Force -ErrorAction SilentlyContinue # Dot Source Helper Scripts # Initialize $InformationPreference = "Continue" $pacEnvironment = Select-PacEnvironment $PacEnvironmentSelector -DefinitionsRootFolder $DefinitionsRootFolder -OutputFolder $OutputFolder -Interactive $Interactive Set-AzCloudTenantSubscription -Cloud $pacEnvironment.cloud -TenantId $pacEnvironment.tenantId -Interactive $pacEnvironment.interactive # Getting existing Policy resources $exemptionsAreNotManagedMessage = "" $policyExemptionsFolder = $pacEnvironment.policyExemptionsFolder $exemptionsFolderForPacEnvironment = "$($policyExemptionsFolder)/$($pacEnvironment.pacSelector)" if (!(Test-Path $policyExemptionsFolder -PathType Container)) { $exemptionsAreNotManagedMessage = "Policy Exemptions folder 'policyExemptions' not found. Exemptions not managed by this EPAC instance." } elseif (!(Test-Path $exemptionsFolderForPacEnvironment -PathType Container)) { $exemptionsAreNotManagedMessage = "Policy Exemptions are not managed by this EPAC instance's PaC environment $($pacEnvironment.pacSelector)!" } $exemptionsAreNotManaged = $exemptionsAreNotManagedMessage -eq "" $scopeTable = Get-AzScopeTree -PacEnvironment $pacEnvironment $deployedPolicyResources = Get-AzPolicyResources -PacEnvironment $pacEnvironment -ScopeTable $scopeTable -SkipExemptions:$exemptionsAreNotManaged # Process Policies $policyDefinitions = @{ new = @{} update = @{} replace = @{} delete = @{} numberOfChanges = 0 numberUnchanged = 0 } $policyRoleIds = @{} $allDefinitions = @{ policydefinitions = @{} policysetdefinitions = @{} } $replaceDefinitions = @{} Build-PolicyPlan ` -DefinitionsRootFolder $pacEnvironment.policyDefinitionsFolder ` -PacEnvironment $pacEnvironment ` -DeployedDefinitions $deployedPolicyResources.policydefinitions ` -Definitions $policyDefinitions ` -AllDefinitions $allDefinitions ` -ReplaceDefinitions $replaceDefinitions ` -PolicyRoleIds $policyRoleIds # Process Policy Sets $policySetDefinitions = @{ new = @{} update = @{} replace = @{} delete = @{} numberOfChanges = 0 numberUnchanged = 0 } Build-PolicySetPlan ` -DefinitionsRootFolder $pacEnvironment.policySetDefinitionsFolder ` -PacEnvironment $pacEnvironment ` -DeployedDefinitions $deployedPolicyResources.policysetdefinitions ` -Definitions $policySetDefinitions ` -AllDefinitions $allDefinitions ` -ReplaceDefinitions $replaceDefinitions ` -PolicyRoleIds $policyRoleIds # Process Assignment JSON files $assignments = @{ new = @{} update = @{} replace = @{} delete = @{} numberOfChanges = 0 numberUnchanged = 0 } $roleAssignments = @{ numberOfChanges = 0 added = @() removed = @() } $allAssignments = @{} Build-AssignmentPlan ` -AssignmentsRootFolder $pacEnvironment.policyAssignmentsFolder ` -PacEnvironment $pacEnvironment ` -ScopeTable $scopeTable ` -DeployedPolicyResources $deployedPolicyResources ` -Assignments $assignments ` -RoleAssignments $roleAssignments ` -AllDefinitions $allDefinitions ` -AllAssignments $allAssignments ` -ReplaceDefinitions $replaceDefinitions ` -PolicyRoleIds $policyRoleIds $exemptions = @{ new = @{} update = @{} replace = @{} delete = @{} numberOfOrphans = 0 numberOfChanges = 0 numberUnchanged = 0 } # Process exemption JSON files Build-ExemptionsPlan ` -ExemptionsRootFolder $exemptionsFolderForPacEnvironment ` -ExemptionsAreNotManagedMessage $exemptionsAreNotManagedMessage ` -PacEnvironment $pacEnvironment ` -AllAssignments $allAssignments ` -Assignments $assignments ` -DeployedExemptions $deployedPolicyResources.policyExemptions ` -Exemptions $exemptions # Output Plan $pacOwnerId = $pacEnvironment.pacOwnerId $timestamp = Get-Date -AsUTC -Format "u" $policyPlan = @{ createdOn = $timestamp pacOwnerId = $pacOwnerId policyDefinitions = $policyDefinitions policySetDefinitions = $policySetDefinitions assignments = $assignments exemptions = $exemptions } $rolesPlan = @{ createdOn = $timestamp pacOwnerId = $pacOwnerId roleAssignments = $roleAssignments } Write-Information "===================================================================================================" Write-Information "Summary" Write-Information "===================================================================================================" if ($null -ne $pacEnvironment.policyDefinitionsFolder) { Write-Information "Policy counts:" Write-Information " $($policyDefinitions.numberUnchanged) unchanged" if ($policyDefinitions.numberOfChanges -eq 0) { Write-Information " $($policyDefinitions.numberOfChanges) changes" } else { Write-Information " $($policyDefinitions.numberOfChanges) changes:" Write-Information " new = $($policyDefinitions.new.psbase.Count)" Write-Information " update = $($policyDefinitions.update.psbase.Count)" Write-Information " replace = $($policyDefinitions.replace.psbase.Count)" Write-Information " delete = $($policyDefinitions.delete.psbase.Count)" } } else { Write-Information "Policy definitions not managed by EPAC." } if ($null -ne $pacEnvironment.policySetDefinitionsFolder) { Write-Information "Policy Set counts:" Write-Information " $($policySetDefinitions.numberUnchanged) unchanged" if ($policySetDefinitions.numberOfChanges -eq 0) { Write-Information " $($policySetDefinitions.numberOfChanges) changes" } else { Write-Information " $($policySetDefinitions.numberOfChanges) changes:" Write-Information " new = $($policySetDefinitions.new.psbase.Count)" Write-Information " update = $($policySetDefinitions.update.psbase.Count)" Write-Information " replace = $($policySetDefinitions.replace.psbase.Count)" Write-Information " delete = $($policySetDefinitions.delete.psbase.Count)" } } else { Write-Information "Policy Set definitions not managed by EPAC." } if ($null -ne $pacEnvironment.policyAssignmentsFolder) { Write-Information "Policy Assignment counts:" Write-Information " $($assignments.numberUnchanged) unchanged" if ($assignments.numberOfChanges -eq 0) { Write-Information " $($assignments.numberOfChanges) changes" } else { Write-Information " $($assignments.numberOfChanges) changes:" Write-Information " new = $($assignments.new.psbase.Count)" Write-Information " update = $($assignments.update.psbase.Count)" Write-Information " replace = $($assignments.replace.psbase.Count)" Write-Information " delete = $($assignments.delete.psbase.Count)" } } else { Write-Information "Policy definitions not managed by EPAC." } if ($exemptionsAreNotManagedMessage -ne "") { Write-Warning $exemptionsAreNotManagedMessage } else { Write-Information "Policy Exemption counts:" Write-Information " $($exemptions.numberUnchanged) unchanged" if ($exemptions.numberOfChanges -eq 0) { Write-Information " $($exemptions.numberOfChanges) changes" } else { Write-Information " $($exemptions.numberOfChanges) changes:" Write-Information " new = $($exemptions.new.psbase.Count)" Write-Information " update = $($exemptions.update.psbase.Count)" Write-Information " replace = $($exemptions.replace.psbase.Count)" Write-Information " delete = $($exemptions.delete.psbase.Count)" Write-Information " orphans = $($exemptions.numberOfOrphans)" } } if ($null -ne $pacEnvironment.policyAssignmentsFolder) { Write-Information "Role Assignment counts:" if ($roleAssignments.numberOfChanges -eq 0) { Write-Information " $($roleAssignments.numberOfChanges) changes" } else { Write-Information " $($roleAssignments.numberOfChanges) changes:" Write-Information " add = $($roleAssignments.added.psbase.Count)" Write-Information " remove = $($roleAssignments.removed.psbase.Count)" } } Write-Information "---------------------------------------------------------------------------------------------------" Write-Information "Output plan(s)" $policyResourceChanges = $policyDefinitions.numberOfChanges $policyResourceChanges += $policySetDefinitions.numberOfChanges $policyResourceChanges += $assignments.numberOfChanges $policyResourceChanges += $exemptions.numberOfChanges $policyStage = "no" $planFile = $pacEnvironment.policyPlanOutputFile if ($policyResourceChanges -gt 0) { Write-Information " Policy resource deployment required; writing Policy plan file '$planFile'" if (-not (Test-Path $planFile)) { $null = (New-Item $planFile -Force) } $null = $policyPlan | ConvertTo-Json -Depth 100 | Out-File -FilePath $planFile -Force $policyStage = "yes" } else { if (Test-Path $planFile) { $null = (Remove-Item $planFile) } Write-Information " Skipping Policy deployment stage/step - no changes" } $roleStage = "no" $planFile = $pacEnvironment.rolesPlanOutputFile if ($roleAssignments.numberOfChanges -gt 0) { Write-Information " Role assignment changes required; writing Policy plan file '$planFile'" if (-not (Test-Path $planFile)) { $null = (New-Item $planFile -Force) } $null = $rolesPlan | ConvertTo-Json -Depth 100 | Out-File -FilePath $planFile -Force $roleStage = "yes" } else { if (Test-Path $planFile) { $null = (Remove-Item $planFile) } Write-Information " Skipping Role Assignment stage/step - no changes" } Write-Information "---------------------------------------------------------------------------------------------------" Write-Information "" switch ($DevOpsType) { ado { Write-Host "##vso[task.setvariable variable=deployPolicyChanges;isOutput=true]$($policyStage)" Write-Host "##vso[task.setvariable variable=deployRoleChanges;isOutput=true]$($roleStage)" break } gitlab { Add-Content "build.env" "deployPolicyChanges=$($policyStage)" Add-Content "build.env" "deployRoleChanges=$($roleStage)" } default { } } } |