dbatools

1.1.74

internal/functions/Restart-WinRMService.ps1

                                function Restart-WinRMService {

    <#

    .SYNOPSIS

        Restarts WinRM service on a remote machine and waits for it to get back up

    .DESCRIPTION

        Restarts WinRM service on a remote machine and waits for it to get back up by attempting to establish a WinRM session.

    #>

    [CmdletBinding(SupportsShouldProcess)]

    Param (

        [Parameter(Mandatory)]

        $ComputerName,

        [pscredential]$Credential,

        [int]$Timeout = 30

    )

    begin {

    }

    process {

        if ($PSCmdlet.ShouldProcess($ComputerName, "Restarting WinRm service")) {

            $restartService = {

                $null = Get-Service -Name WinRM -ErrorAction Stop | Restart-Service -ErrorAction Stop

            }

            try {

                $null = Invoke-Command2 -ComputerName $ComputerName -Credential $Credential -ScriptBlock $restartService -Raw -ErrorAction Stop

            } catch [System.Management.Automation.Remoting.PSRemotingTransportException] {

                Write-Message -Level Debug "Expected exception - the pipe was disconnected | $($_.Exception.Message)"

            } catch {

                Write-Message -Level Warning "Failed to restart WinRM service on $ComputerName"

            }

            Write-Message -Level Debug "Removing existing local sessions to $ComputerName - they are no longer valid"

            $runspaceId = [System.Management.Automation.Runspaces.Runspace]::DefaultRunspace.InstanceId

            # Retrieve a session from the session cache, if available (it's unique per runspace)

            [array]$currentSessions = [Sqlcollaborative.Dbatools.Connection.ConnectionHost]::PSSessionGet($runspaceId, $ComputerName)

            Write-Message -Level Debug -Message "Removing $($currentSessions.Count) sessions from $ComputerName in runspace $runspaceId"

            # "$currentSessions | Remove-PSSession" would fail with "Remove-PSSession : Cannot bind argument to parameter 'Session' because it is null." if $currentSessions is empty.

            foreach ($session in $currentSessions) { $session | Remove-PSSession }

            Write-Message -Level Debug "Waiting for the WinRM service to restart on $ComputerName"

            $waitCounter = 0

            while ($waitCounter -lt $Timeout * 5) {

                try {

                    $available = Invoke-Command2 -ComputerName $ComputerName -Credential $Credential -ScriptBlock { $true } -Raw -ErrorAction Stop

                } catch {

                    Write-Message -Level Debug -Message "Still waiting for the WinRM service to restart on $ComputerName"

                }

                if ($available) { break }

                Start-Sleep -Milliseconds 200

                $waitCounter++

            }

        }

        Write-Message -Level Debug -Message "WinRM restart comlete on $ComputerName"

    }

}

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