functions/Copy-DbaSqlPolicyManagement.ps1

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function Copy-DbaSqlPolicyManagement {
    <#
  .SYNOPSIS
   Migrates SQL Policy Based Management Objects, including both policies and conditions.
 
  .DESCRIPTION
   By default, all policies and conditions are copied. If an object already exist on the destination, it will be skipped unless -Force is used.
 
   The -Policy and -Condition parameters are auto-populated for command-line completion and can be used to copy only specific objects.
 
  .PARAMETER Source
   Source SQL Server.You must have sysadmin access and server version must be SQL Server version 2008 or higher.
 
  .PARAMETER SourceSqlCredential
   Allows you to login to servers using SQL Logins as opposed to Windows Auth/Integrated/Trusted. To use:
 
   $scred = Get-Credential, then pass $scred object to the -SourceSqlCredential parameter.
 
   Windows Authentication will be used if DestinationSqlCredential is not specified. SQL Server does not accept Windows credentials being passed as credentials.
   To connect as a different Windows user, run PowerShell as that user.
 
  .PARAMETER Destination
   Destination Sql Server. You must have sysadmin access and server version must be SQL Server version 2008 or higher.
 
  .PARAMETER DestinationSqlCredential
   Allows you to login to servers using SQL Logins as opposed to Windows Auth/Integrated/Trusted. To use:
 
   $dcred = Get-Credential, then pass this $dcred to the -DestinationSqlCredential parameter.
 
   Windows Authentication will be used if DestinationSqlCredential is not specified. SQL Server does not accept Windows credentials being passed as credentials.
   To connect as a different Windows user, run PowerShell as that user.
 
  .PARAMETER Policy
   The policy(ies) to process - this list is auto-populated from the server. If unspecified, all policies will be processed.
 
  .PARAMETER ExcludePolicy
   The policy(ies) to exclude - this list is auto-populated from the server
 
  .PARAMETER Condition
   The condition(s) to process - this list is auto-populated from the server. If unspecified, all conditions will be processed.
 
  .PARAMETER ExcludeCondition
   The condition(s) to exclude - this list is auto-populated from the server
 
  .PARAMETER Force
   If policies exists on destination server, it will be dropped and recreated.
 
  .PARAMETER WhatIf
   Shows what would happen if the command were to run. No actions are actually performed.
 
  .PARAMETER Confirm
   Prompts you for confirmation before executing any changing operations within the command.
 
  .PARAMETER Silent
   Use this switch to disable any kind of verbose messages
 
  .NOTES
   Tags: Migration
   Author: Chrissy LeMaire (@cl), netnerds.net
   Requires: sysadmin access on SQL Servers
 
   Website: https://dbatools.io
   Copyright: (C) Chrissy LeMaire, clemaire@gmail.com
   License: GNU GPL v3 https://opensource.org/licenses/GPL-3.0
 
  .LINK
   https://dbatools.io/Copy-DbaSqlPolicyManagement
 
  .EXAMPLE
   Copy-DbaSqlPolicyManagement -Source sqlserver2014a -Destination sqlcluster
 
   Copies all policies and conditions from sqlserver2014a to sqlcluster, using Windows credentials.
 
  .EXAMPLE
   Copy-DbaSqlPolicyManagement -Source sqlserver2014a -Destination sqlcluster -SourceSqlCredential $cred
 
   Copies all policies and conditions from sqlserver2014a to sqlcluster, using SQL credentials for sqlserver2014a and Windows credentials for sqlcluster.
 
  .EXAMPLE
   Copy-DbaSqlPolicyManagement -Source sqlserver2014a -Destination sqlcluster -WhatIf
 
   Shows what would happen if the command were executed.
 
  .EXAMPLE
   Copy-DbaSqlPolicyManagement -Source sqlserver2014a -Destination sqlcluster -Policy 'xp_cmdshell must be disabled'
 
   Copies only one policy, 'xp_cmdshell must be disabled' from sqlserver2014a to sqlcluster. No conditions are migrated.
 #>

    [CmdletBinding(DefaultParameterSetName = "Default", SupportsShouldProcess = $true)]
    param (
        [parameter(Mandatory = $true)]
        [DbaInstanceParameter]$Source,
        [PSCredential]
        $SourceSqlCredential,
        [parameter(Mandatory = $true)]
        [DbaInstanceParameter]$Destination,
        [PSCredential]
        $DestinationSqlCredential,
        [object[]]$Policy,
        [object[]]$ExcludePolicy,
        [object[]]$Condition,
        [object[]]$ExcludeCondition,
        [switch]$Force,
        [switch]$Silent
    )

    begin {

        $sourceServer = Connect-SqlInstance -SqlInstance $Source -SqlCredential $SourceSqlCredential -MinimumVersion 10
        $destServer = Connect-SqlInstance -SqlInstance $Destination -SqlCredential $DestinationSqlCredential -MinimumVersion 10

        $source = $sourceServer.DomainInstanceName
        $destination = $destServer.DomainInstanceName
    }
    process {
        if (Test-FunctionInterrupt) { return }

        $sourceSqlConn = $sourceServer.ConnectionContext.SqlConnectionObject
        $sourceSqlStoreConnection = New-Object Microsoft.SqlServer.Management.Sdk.Sfc.SqlStoreConnection $sourceSqlConn
        $sourceStore = New-Object  Microsoft.SqlServer.Management.DMF.PolicyStore $sourceSqlStoreConnection

        $destSqlConn = $destServer.ConnectionContext.SqlConnectionObject
        $destSqlStoreConnection = New-Object Microsoft.SqlServer.Management.Sdk.Sfc.SqlStoreConnection $destSqlConn
        $destStore = New-Object  Microsoft.SqlServer.Management.DMF.PolicyStore $destSqlStoreConnection

        $storePolicies = $sourceStore.Policies | Where-Object { $_.IsSystemObject -eq $false }
        $storeConditions = $sourceStore.Conditions | Where-Object { $_.IsSystemObject -eq $false }

        if ($Policy) {
            $storePolicies = $storePolicies | Where-Object Name -In $Policy
        }
        if ($ExcludePolicy) {
            $storePolicies = $storePolicies | Where-Object Name -NotIn $ExcludePolicy
        }
        if ($Condition) {
            $storeConditions = $storeConditions | Where-Object Name -In $Condition
        }
        if ($ExcludeCondition) {
            $storeConditions = $storeConditions | Where-Object Name -NotIn $ExcludeCondition
        }

        if ($Policy -and $Condition) {
            $storeConditions = $null
            $storePolicies = $null
        }

        <#
      Conditions
  #>


        Write-Message -Level Verbose -Message "Migrating conditions"
        foreach ($condition in $storeConditions) {
            $conditionName = $condition.Name

            $copyConditionStatus = [pscustomobject]@{
                SourceServer      = $sourceServer.Name
                DestinationServer = $destServer.Name
                Name              = $conditionName
                Type              = "Condition"
                Status            = $null
                Notes             = $null
                DateTime          = [DbaDateTime](Get-Date)
            }

            if ($destStore.Conditions[$conditionName] -ne $null) {
                if ($force -eq $false) {
                    Write-Message -Level Warning -Message "condition '$conditionName' was skipped because it already exists on $destination. Use -Force to drop and recreate"

                    $copyConditionStatus.Status = "Skipped"
                    $copyConditionStatus.Notes = "Already exists on destination."
                    $copyConditionStatus
                    continue
                }
                else {
                    if ($Pscmdlet.ShouldProcess($destination, "Attempting to drop $conditionName")) {
                        Write-Message -Level Verbose -Message "Condition '$conditionName' exists on $destination. Force specified. Dropping $conditionName."

                        try {
                            $dependentPolicies = $destStore.Conditions[$conditionName].EnumDependentPolicies()
                            foreach ($dependent in $dependentPolicies) {
                                $dependent.Drop()
                                $destStore.Conditions.Refresh()
                            }
                            $destStore.Conditions[$conditionName].Drop()
                        }
                        catch {
                            $copyConditionStatus.Status = "Failed"
                            $copyConditionStatus.Notes = $_.Exception.Message
                            $copyConditionStatus
                            Stop-Function -Message "Issue dropping condition on $destination" -Target $conditionName -ErrorRecord $_ -Continue
                        }
                    }
                }
            }

            if ($Pscmdlet.ShouldProcess($destination, "Migrating condition $conditionName")) {
                try {
                    $sql = $condition.ScriptCreate().GetScript() | Out-String
                    Write-Message -Level Debug -Message $sql
                    Write-Message -Level Verbose -Message "Copying condition $conditionName"
                    $null = $destServer.Query($sql)
                    $destStore.Conditions.Refresh()

                    $copyConditionStatus.Status = "Successful"
                    $copyConditionStatus
                }
                catch {
                    $copyConditionStatus.Status = "Failed"
                    $copyConditionStatus.Notes = $_.Exception.Message
                    $copyConditionStatus

                    Stop-Function -Message "Issue creating condition on $destination" -Target $conditionName -ErrorRecord $_
                }
            }
        }

        <#
      Policies
  #>


        Write-Message -Level Verbose -Message "Migrating policies"
        foreach ($policy in $storePolicies) {
            $policyName = $policy.Name

            $copyPolicyStatus = [pscustomobject]@{
                SourceServer      = $sourceServer.Name
                DestinationServer = $destServer.Name
                Name              = $policyName
                Type              = "Policy"
                Status            = $null
                Notes             = $null
                DateTime          = [DbaDateTime](Get-Date)
            }

            if ($destStore.Policies[$policyName] -ne $null) {
                if ($force -eq $false) {
                    Write-Message -Level Warning -Message "Policy '$policyName' was skipped because it already exists on $destination. Use -Force to drop and recreate"

                    $copyPolicyStatus.Status = "Skipped"
                    $copyPolicyStatus.Notes = "Already exists on destination."
                    $copyPolicyStatus
                    continue
                }
                else {
                    if ($Pscmdlet.ShouldProcess($destination, "Attempting to drop $policyName")) {
                        Write-Message -Level Verbose -Message "Policy '$policyName' exists on $destination. Force specified. Dropping $policyName."

                        try {
                            $destStore.Policies[$policyName].Drop()
                            $destStore.Policies.refresh()
                        }
                        catch {
                            $copyPolicyStatus.Status = "Failed"
                            $copyPolicyStatus.Notes = $_.Exception.Message
                            $copyPolicyStatus

                            Stop-Function -Message "Issue dropping policy on $destination" -Target $policyName -ErrorRecord $_ -Continue
                        }
                    }
                }
            }

            if ($Pscmdlet.ShouldProcess($destination, "Migrating policy $policyName")) {
                try {
                    $destStore.Conditions.Refresh()
                    $destStore.Policies.Refresh()
                    $sql = $policy.ScriptCreateWithDependencies().GetScript() | Out-String
                    Write-Message -Level Debug -Message $sql
                    Write-Message -Level Verbose -Message "Copying policy $policyName"
                    $null = $destServer.Query($sql)

                    $copyPolicyStatus.Status = "Successful"
                    $copyPolicyStatus
                }
                catch {
                    $copyPolicyStatus.Status = "Failed"
                    $copyPolicyStatus.Notes = $_.Exception.Message
                    $copyPolicyStatus

                    # This is usually because of a duplicate dependent from above. Just skip for now.
                    Stop-Function -Message "Issue creating policy on $destination" -Target $policyName -ErrorRecord $_ -Continue
                }
            }
        }
    }
    end {
        Test-DbaDeprecation -DeprecatedOn "1.0.0" -Silent:$false -Alias Copy-SqlPolicyManagement
    }
}