Invoke-RetryCommand.ps1
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.SYNOPSIS Executes a command and retries it a maximum of time with a exponential delay Default is to retry 3 times with a delay of 100ms .EXAMPLE PS C:\ Invoke-RetryCommand -ScriptBlock { Write-Output test } -Retries 3 -Delay 100 #> function Invoke-RetryCommand { [CmdletBinding()] Param ( [Parameter(Position=0, Mandatory=$true)] [scriptblock]$ScriptBlock, [Parameter(Position=1, Mandatory=$false)] [int]$Retries = 3, [Parameter(Position=2, Mandatory=$false)] [int]$Delay = 100 ) Begin { $cnt = 0 } Process { do { $cnt++ try { $res = $ScriptBlock.Invoke() return $res } catch { Write-Error $_.Exception.InnerException.Message -ErrorAction Continue Start-Sleep -Milliseconds ($Delay * [Math]::Pow(2, $cnt - 1)) } } while ($cnt -le $Retries) throw 'Execution failed.' } } # SIG # Begin signature block # MIIRWAYJKoZIhvcNAQcCoIIRSTCCEUUCAQExDzANBglghkgBZQMEAgEFADB5Bgor # BgEEAYI3AgEEoGswaTA0BgorBgEEAYI3AgEeMCYCAwEAAAQQH8w7YFlLCE63JNLG # KX7zUQIBAAIBAAIBAAIBAAIBADAxMA0GCWCGSAFlAwQCAQUABCC9T+q0ZvfKuOXS # 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