Invoke-Command with timeout [duplicate] - powershell

Question

This question already has answers here:
Getting an error when executing a nested ScriptBlock from Invoke-Command
(2 answers)
Closed 1 year ago.
Trying to create an invoke-command with a 10 second timeout incase one of my computers is in a zombie state and doesn't respond. Here's what I have so far below. But, one problem i'm having is that it doesn't behave like the normal invoke-command by reporting the output to the terminal as the command runs...
PS> Invoke_command_responsive -Computer pv3039 -ScriptBlock {gci -recurse -Path C:\ | out-host}
Cannot bind parameter 'ScriptBlock'. Cannot convert the "gci -recurse -Path C:\ | out-host" value of type "System.String" to type "System.Management.Automation.ScriptBlock".
+ CategoryInfo : InvalidArgument: (:) [Invoke-Command], ParameterBindingException
+ FullyQualifiedErrorId : CannotConvertArgumentNoMessage,Microsoft.PowerShell.Commands.InvokeCommandCommand
+ PSComputerName : localhost
Finished
Here's my code:
function invoke_command_responsive {
$start_time = Get-Date
$start_dir = better_resolve_path(".")
$watchdog = 60
$j = Start-Job -ScriptBlock {
set-location $using:start_dir | out-null
$iargs = $using:args
invoke-command #iargs | out-host
}
# Wait for Job to Complete or TIMEOUT!
while($true) {
if ($j.HasMoreData) {
Receive-Job $j
Start-Sleep -Milliseconds 200
}
$current = Get-Date
$time_span = $current - $start_time
if ($time_span.TotalSeconds -gt $watchdog) {
write-host "TIMEOUT!"
Stop-Job $j
break
}
if (-not $j.HasMoreData -and $j.State -ne 'Running') {
write-host "Finished"
break
}
}
Remove-Job $j
}
function better_resolve_path {
param([string]$path)
$pathfix = $ExecutionContext.SessionState.Path.GetUnresolvedProviderPathFromPSPath($path)
return $pathfix
}
It kind of looks like it can't take a ScriptBlock from "using:"

Answer 1

Powershell just has trouble passing a scriptblock using "using:" syntax.
PS> invoke_command_responsive -Machine pv3040 -Cmd "get-location"
function invoke_command_responsive {
param(
[string]$Machine,
[string]$Cmd
)
$start_time = Get-Date
$start_dir = better_resolve_path(".")
$watchdog = 8 #seconds
[ScriptBlock]$sb = [ScriptBlock]::Create($opt_cmd)
$j = Start-Job -ScriptBlock {
set-location $using:start_dir | out-null
[ScriptBlock]$sb = [ScriptBlock]::Create($using:cmd)
invoke-command -Computer $using:Machine -ScriptBlock:$sb | out-host
}
# Wait for Job to Complete or TIMEOUT!
while($true) {
if ($j.HasMoreData) {
Receive-Job $j
Start-Sleep -Milliseconds 50
}
$current = Get-Date
$time_span = $current - $start_time
if ($time_span.TotalSeconds -gt $watchdog) {
write-host "TIMEOUT!"
Stop-Job $j
break
}
if (-not $j.HasMoreData -and $j.State -ne 'Running') {
write-host "Finished"
break
}
}
Remove-Job $j
}
function better_resolve_path {
param([string]$path)
$pathfix = $ExecutionContext.SessionState.Path.GetUnresolvedProviderPathFromPSPath($path)
return $pathfix
}