Powershell Remoting: using imported module cmdlets in a remote pssession

Question

Is there a way to use modules that were imported in a local session in a remote session? I looked at import-pssession, but I don't know how to get the local session. Here's a sample of what I want to do.

import-module .\MyModule\MyModule.ps1
$session = new-pssession -computerName RemoteComputer
invoke-command -session $session -scriptblock { Use-CmdletFromMyModule }

Also, I do not want to import-module in the remote session, as the ps1 files are not on that server.

Answer 1

I don't believe you can. You can go the other way - import commands loaded on the remote machine into your remote session running on the local machine. You can specify a script to invoke-command and it will copy that script over to the remote machine and run it. But if you require snapins or additional modules, you will need to make sure those are installed on each remote machine and then load them into the remote session via commands or your script.

Answer 2

I ended up hacking this to work. What I did was create a local session, import modules into that session and used import-pssession to import modules from the created local session into the remote session. This is slow. If anyone has a better way of doing this, or if someone knows how to get an instance of the base session I'd love to hear from you!

Remoting.psm1

function Export-ModuleToSession {
 Param(
  [ValidateNotNull()]
  $session,
  [ValidateNotNull()]
  $modules
 )

 $computername = $env:computername

 $modulesToImport = get-module -name $modules

 invoke-command -session $session -argumentlist @($computername, $modulesToImport) -scriptblock {
  Param(
   $computername,
   $modules
  )

  write-host ("Creating Temp Session On: " + $computername)

  $localSession = New-psSession -computername $computername

  $modules | foreach-object {
   if($_.ModuleType -ne "Binary") {
    $path = $_.path
   }
   else {
    $path = join-path (split-path $_.Path) ("{0}.psd1" -f $_.name)
   }

   invoke-command -session $localSession -argumentList $path -scriptblock {
    Param(
     $path
    )

    $initializeDefaultBTSDrive = $false
    set-executionpolicy unrestricted

    write-host ("Importing Module To Temp Session: " + $path)
    import-module $path
   }
  }

  $initializeDefaultBTSDrive = $false

  $modules | foreach-object { 
   write-host ("Exporting Module: " + $_.name)
   import-psSession -session $localSession -Module $_.name  | out-null 
  }
 }
}

MyModule.psm1

function MyCmdlet {}

RemotingTest.ps1

import-module .\remoting.psm1
import-module .\MyModule.psm1

try
{
 $remoteSession = New-PsSession -computerName "RemoteComputer"
 Export-ModuleToSession -session $remoteSession -modules "MyModule"

 Invoke-Command -session $remoteSession -scriptblock { MyCmdlet } -verbose -ea Stop
}
finally
{
 Remove-PsSession $remoteSession -ea Continue
 Remove-Module "Remoting" -ea Continue
 Remove-Module "MyModule" -ea Continue
}