functions/Copy-DbaResourceGovernor.ps1

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function Copy-DbaResourceGovernor {
    <#
  .SYNOPSIS
   Migrates Resource Pools
 
  .DESCRIPTION
   By default, all non-system resource pools are migrated. If the pool already exists on the destination, it will be skipped unless -Force is used.
 
   The -ResourcePool parameter is 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 ResourcePool
   The resource pool(s) to process - this list is auto-populated from the server. If unspecified, all resource pools will be processed.
 
  .PARAMETER ExcludeResourcePool
   The resource pool(s) to exclude - this list is auto-populated from the server
 
  .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 Force
   If policies exists on destination server, it will be dropped and recreated.
 
  .PARAMETER Silent
   Use this switch to disable any kind of verbose messages
 
  .NOTES
   Tags: Migration, ResourceGovernor
   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-DbaResourceGovernor
 
  .EXAMPLE
   Copy-DbaResourceGovernor -Source sqlserver2014a -Destination sqlcluster
 
   Copies all extended event policies from sqlserver2014a to sqlcluster, using Windows credentials.
 
  .EXAMPLE
   Copy-DbaResourceGovernor -Source sqlserver2014a -Destination sqlcluster -SourceSqlCredential $cred
 
   Copies all extended event policies from sqlserver2014a to sqlcluster, using SQL credentials for sqlserver2014a and Windows credentials for sqlcluster.
 
  .EXAMPLE
   Copy-DbaResourceGovernor -Source sqlserver2014a -Destination sqlcluster -WhatIf
 
   Shows what would happen if the command were executed.
 #>

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

    begin {

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

        $source = $sourceServer.DomainInstanceName
        $destination = $destServer.DomainInstanceName

        if ($sourceServer.VersionMajor -lt 10 -or $destServer.VersionMajor -lt 10) {
            Stop-Function -Message "Resource Governor is only supported in SQL Server 2008 and above. Quitting."
            return
        }
    }
    process {
        if (Test-FunctionInterrupt) { return }

        $copyResourceGovSetting = [pscustomobject]@{
            SourceServer      = $sourceServer.Name
            DestinationServer = $destServer.Name
            Type              = "Resource Governor Settings"
            Name              = $null
            Status            = $null
            Notes             = $null
            DateTime          = [DbaDateTime](Get-Date)
        }

        if ($Pscmdlet.ShouldProcess($destination, "Updating Resource Governor settings")) {
            if ($destServer.Edition -notmatch 'Enterprise' -and $destServer.Edition -notmatch 'Datacenter' -and $destServer.Edition -notmatch 'Developer') {
                Write-Message -Level Warning -Message "The resource governor is not available in this edition of SQL Server. You can manipulate resource governor metadata but you will not be able to apply resource governor configuration. Only Enterprise edition of SQL Server supports resource governor."
            }
            else {
                try {
                    $sql = $sourceServer.ResourceGovernor.Script() | Out-String
                    Write-Message -Level Debug -Message $sql
                    Write-Message -Level Verbose -Message "Updating Resource Governor settings"
                    $destServer.Query($sql)

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

                    Stop-Function -Message "Not able to update settings" -Target $destServer -ErrorRecord $_
                }
            }
        }

        # Pools
        if ($ResourcePool) {
            $pools = $sourceServer.ResourceGovernor.ResourcePools | Where-Object Name -In $ResourcePool
        }
        elseif ($ExcludeResourcePool) {
            $pool = $sourceServer.ResourceGovernor.ResourcePools | Where-Object Name -NotIn $ExcludeResourcePool
        }
        else {
            $pools = $sourceServer.ResourceGovernor.ResourcePools | Where-Object { $_.Name -notin "internal", "default" }
        }

        Write-Message -Level Verbose -Message "Migrating pools"
        foreach ($pool in $pools) {
            $poolName = $pool.Name

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

            if ($destServer.ResourceGovernor.ResourcePools[$poolName] -ne $null) {
                if ($force -eq $false) {
                    Write-Message -Level Warning -Message "Pool '$poolName' was skipped because it already exists on $destination. Use -Force to drop and recreate"

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

                        try {
                            $destPool = $destServer.ResourceGovernor.ResourcePools[$poolName]
                            $workloadGroups = $destPool.WorkloadGroups
                            foreach ($workloadGroup in $workloadGroups) {
                                $workloadGroup.Drop()
                            }
                            $destPool.Drop()
                            $destServer.ResourceGovernor.Alter()
                        }
                        catch {
                            $copyResourceGovPool.Status = "Failed to drop from Destination"
                            $copyResourceGovPool.Notes = $_.Exception
                            $copyResourceGovPool

                            Stop-Function -Message "Unable to drop: $_ Moving on." -Target $destPool -ErrorRecord $_ -Continue
                        }
                    }
                }
            }

            if ($Pscmdlet.ShouldProcess($destination, "Migrating pool $poolName")) {
                try {
                    $sql = $pool.Script() | Out-String
                    Write-Message -Level Debug -Message $sql
                    Write-Message -Level Verbose -Message "Copying pool $poolName"
                    $destServer.Query($sql)

                    $copyResourceGovPool.Status = "Successful"
                    $copyResourceGovPool

                    $workloadGroups = $pool.WorkloadGroups
                    foreach ($workloadGroup in $workloadGroups) {
                        $workgroupName = $workloadGroup.Name

                        $copyResourceGovWorkGroup = [pscustomobject]@{
                            SourceServer      = $sourceServer.Name
                            DestinationServer = $destServer.Name
                            Type              = "Pool Workgroup"
                            Name              = $workgroupName
                            Status            = $null
                            Notes             = $null
                            DateTime          = [DbaDateTime](Get-Date)
                        }

                        $sql = $workloadGroup.Script() | Out-String
                        Write-Message -Level Debug -Message $sql
                        Write-Message -Level Verbose -Message "Copying $workgroupName"
                        $destServer.Query($sql)

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

                    Stop-Function -Message "Unable to migrate pool" -Target $pool -ErrorRecord $_
                }
            }
        }

        if ($Pscmdlet.ShouldProcess($destination, "Reconfiguring")) {
            if ($destServer.Edition -notmatch 'Enterprise' -and $destServer.Edition -notmatch 'Datacenter' -and $destServer.Edition -notmatch 'Developer') {
                Write-Message -Level Warning -Message "The resource governor is not available in this edition of SQL Server. You can manipulate resource governor metadata but you will not be able to apply resource governor configuration. Only Enterprise edition of SQL Server supports resource governor."
            }
            else {
                Write-Message -Level Verbose -Message "Reconfiguring Resource Governor"
                $sql = "ALTER RESOURCE GOVERNOR RECONFIGURE"
                $destServer.Query($sql)

                $copyResourceGovReconfig = [pscustomobject]@{
                    SourceServer      = $sourceServer.Name
                    DestinationServer = $destServer.Name
                    Type              = "Reconfigure Resource Governor"
                    Name              = $null
                    Status            = "Successful"
                    Notes             = $null
                    DateTime          = [DbaDateTime](Get-Date)
                }
                $copyResourceGovReconfig
            }
        }
    }
    end {
        Test-DbaDeprecation -DeprecatedOn "1.0.0" -Silent:$false -Alias Copy-SqlResourceGovernor
    }
}