functions/Copy-DbaAgentSharedSchedule.ps1

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function Copy-DbaAgentSharedSchedule {
    <#
  .SYNOPSIS
   Copy-DbaAgentSharedSchedule migrates shared job schedules from one SQL Server to another.
 
  .DESCRIPTION
   All shared job schedules are copied.
    
   If the associated credential for the account does not exist on the destination, it will be skipped. If the shared job schedule already exists on the destination, it will be skipped unless -Force is used.
 
  .PARAMETER Source
   Source SQL Server. You must have sysadmin access and server version must be SQL Server version 2000 or higher.
 
  .PARAMETER SourceSqlCredential
   Allows you to login to servers using SQL Logins instead of Windows Authentication (AKA Integrated or Trusted). To use:
 
   $scred = Get-Credential, then pass $scred object to the -SourceSqlCredential parameter.
 
   Windows Authentication will be used if SourceSqlCredential 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 the server must be SQL Server 2000 or higher.
 
  .PARAMETER DestinationSqlCredential
   Allows you to login to servers using SQL Logins instead of Windows Authentication (AKA Integrated or 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 WhatIf
   If this switch is enabled, no actions are performed but informational messages will be displayed that explain what would happen if the command were to run.
 
  .PARAMETER Confirm
   If this switch is enabled, you will be prompted for confirmation before executing any operations that change state.
   
  .PARAMETER Force
   If this switch is enabled, the Operator will be dropped and recreated on Destination.
 
  .PARAMETER Silent
   If this switch is enabled, the internal messaging functions will be silenced.
 
  .NOTES
   Tags: Migration, Agent
   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-DbaAgentSharedSchedule
 
  .EXAMPLE
   Copy-DbaAgentSharedSchedule -Source sqlserver2014a -Destination sqlcluster
 
   Copies all shared job schedules from sqlserver2014a to sqlcluster using Windows credentials. If shared job schedules with the same name exist on sqlcluster, they will be skipped.
 
  .EXAMPLE
   Copy-DbaAgentSharedSchedule -Source sqlserver2014a -Destination sqlcluster -WhatIf -Force
 
   Shows what would happen if the command were executed using force.
 #>

    [CmdletBinding(DefaultParameterSetName = "Default", SupportsShouldProcess = $true)]
    param (
        [parameter(Mandatory = $true)]
        [DbaInstanceParameter]$Source,
        [PSCredential]
        $SourceSqlCredential,
        [parameter(Mandatory = $true)]
        [DbaInstanceParameter]$Destination,
        [PSCredential]
        $DestinationSqlCredential,
        [switch]$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 9 -or $destServer.VersionMajor -lt 9) {
            throw "Server SharedSchedules are only supported in SQL Server 2005 and above. Quitting."
        }

        $serverSchedules = $sourceServer.JobServer.SharedSchedules
        $destSchedules = $destServer.JobServer.SharedSchedules
    }
    process {
        foreach ($schedule in $serverSchedules) {
            $scheduleName = $schedule.Name
            $copySharedScheduleStatus = [pscustomobject]@{
                SourceServer        = $sourceServer.Name
                DestinationServer   = $destServer.Name
                Name                = $scheduleName
                Status              = $null
                DateTime            = [Sqlcollaborative.Dbatools.Utility.DbaDateTime](Get-Date)
            }

            if ($schedules.Length -gt 0 -and $schedules -notcontains $scheduleName) {
                continue
            }

            if ($destSchedules.Name -contains $scheduleName) {
                if ($force -eq $false) {
                    $copySharedScheduleStatus.Status = "Skipped"
                    $copySharedScheduleStatus
                    Write-Message -Level Warning -Message "Shared job schedule $scheduleName exists at destination. Use -Force to drop and migrate."
                    continue
                }
                else {
                    if ($destServer.JobServer.Jobs.JobSchedules.Name -contains $scheduleName) {
                        $copySharedScheduleStatus.Status = "Skipped"
                        $copySharedScheduleStatus
                        Write-Message -Level Warning -Message "Schedule [$scheduleName] has associated jobs. Skipping."
                        continue
                    }
                    else {
                        if ($Pscmdlet.ShouldProcess($destination, "Dropping schedule $scheduleName and recreating")) {
                            try {
                                Write-Message -Level Verbose -Message "Dropping schedule $scheduleName"
                                $destServer.JobServer.SharedSchedules[$scheduleName].Drop()
                            }
                            catch {
                                $copySharedScheduleStatus.Status = "Failed"
                                $copySharedScheduleStatus
                                Stop-Function -Message "Issue dropping schedule" -Target $scheduleName -InnerErrorRecord $_ -Continue
                            }
                        }
                    }
                }
            }

            if ($Pscmdlet.ShouldProcess($destination, "Creating schedule $scheduleName")) {
                try {
                    Write-Message -Level Verbose -Message "Copying schedule $scheduleName"
                    $sql = $schedule.Script() | Out-String

                    Write-Message -Level Debug -Message $sql
                    $destServer.Query($sql)

                    $copySharedScheduleStatus.Status = "Successful"
                    $copySharedScheduleStatus
                }
                catch {
                    $copySharedScheduleStatus.Status = "Failed"
                    $copySharedScheduleStatus
                    Stop-Function -Message "Issue creating schedule" -Target $scheduleName -InnerErrorRecord $_ -Continue
                }
            }
        }
    }
    end {
        Test-DbaDeprecation -DeprecatedOn "1.0.0" -Silent:$false -Alias Copy-SqlSharedSchedule
    }
}