Using -FunctionsToLoad

[Timothy Choi]

Are there any examples on how to use -FunctionsToLoad?

I have the following script:

Import-Module $PSScriptRoot\Module.psm1 # Exposes FunctionA and Function B
Import-Module $PSscriptRoot\$dynamicallyImportedModule.psm1 # Exposes FunctionC

1..10 | Start-RSJob -ScriptBlock $scriptBlock -FunctionsToLoad "FunctionA", "FunctionB", "FunctionC"

However the script will tell me it cannot find these functions even though they are definitely loaded.

[Timothy Choi]

It turns out while I only have 10 jobs, the system spawned 104 jobs while trying to load the correct functions into memory. What is going on here?

[Max Kozlov]

you should give more info about your modules.

PS C:\> gc "D:\!\specialmodule.psm1"
function test-func {
        'this is a test'
}
export-modulemember -function test-func
PS C:\> import-module "D:\!\specialmodule.psm1"
PS C:\> start-rsjob { test-func } -FunctionsToImport test-func

Id       Name                 State           HasMoreData  HasErrors    Command
--       ----                 -----           -----------  ---------    -------
1        Job1                 Completed       True         False         test-func


PS C:\> Get-RSJob | Receive-RSJob
this is a test

as you can see, there is no problem
but for example with remote exchange there is a problem

PS C:\> $mailsession =  New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri http://MAILSERVER.domain.com/PowerShell/ -Authentication Kerberos
PS C:\> Import-PSSession $mailsession
PS C:\> start-rsjob { get-mailbox administrator } -FunctionsToImport get-mailbox
PS C:\> start-rsjob { get-mailbox administrator }
PS C:\> Get-RSJob
Id       Name                 State           HasMoreData  HasErrors    Command
--       ----                 -----           -----------  ---------    -------
1        Job1                 Completed       False        False         test-func
2        Job2                 Failed          False        True          get-mailbox administrator
3        Job3                 Completed       False        True          get-mailbox administrator
PS C:\> Get-RSJob 2 | Receive-RSJob
Exception calling "EndInvoke" with "1" argument(s): "The expression after '&' in a pipeline element produced an object that was not valid. It must result in a command name, a script block, or a CommandInfo object."
PS C:\> Get-RSJob 3 | Receive-RSJob
The term 'get-mailbox' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the spelling of the name, or if a path was included, verify that the path is correct and try again.

[Timothy Choi]

All of my functions in my modules will remote into a server with PS Remoting. Does this mean I cannot use this module then?

I can call my functions after Import-Moduleing them just fine, just not within a RSJob ScriptBlock.

[Max Kozlov]

No, remoting also work ok
module:

function test-func($c) {
	Invoke-Command -Comp $c { ps }
}
export-modulemember -function test-func

call:

PS C:\> start-rsjob { test-func server } -FunctionsToImport test-func
Id       Name                 State           HasMoreData  HasErrors    Command
--       ----                 -----           -----------  ---------    -------
2        Job2                 Running         False        False         test-func server
PS C:\> Get-RSJob 2 | Receive-RSJob
Handles  NPM(K)    PM(K)      WS(K)     CPU(s)     Id  SI ProcessName                         PSComputerName
-------  ------    -----      -----     ------     --  -- -----------                         --------------
     44       6     3556        864      10,11   2272   2 conhost                             server
     39       5     1868        456       4,07   4560   2 conhost                             server
    326      12     2348        688      16,96    364   2 csrss                               server
...

there may be some specific with functions or scriptblock writing style.

If you can construct short but real code example it can help to find where is a problem

btw, may be there is incompatibility with PS versions or module version ?
which version you use ?

[Timothy Choi]

It turns out the issue might actually be me not clearing out old junk by running Get-RSJob -Name * | Remove-RSJob, therefore I was reading old errors when the script had other problems. It's strange that this is not done automatically when the script finishes executing, however I'm just happy it works.

Now onto unhelpful debug messages...