Public/Invoke-ExponentialBackoff.ps1
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# Copyright (c) 2023 Anthony J. Raymond, MIT License (see manifest for details) function Invoke-ExponentialBackoff { [CmdletBinding()] [OutputType([object])] ## PARAMETERS ############################################################# param ( [Parameter( Position = 0, Mandatory )] [scriptblock] $ScriptBlock, [Parameter()] [int] $RetryCount = 3, [Parameter()] [int] $Base = 2, [Parameter()] [int] $Scalar = 1 ) ## PROCESS ################################################################ process { for ([int] $i = 0; $i -lt $RetryCount; $i++) { try { . $ScriptBlock break } catch { $PSCmdlet.WriteError($_) if (($i + 1) -ge $RetryCount) { $PSCmdlet.ThrowTerminatingError(( New-ExponentialBackoffLimitException -Message ("The operation has reached the limit of {0} retries." -f $RetryCount) )) } Start-Sleep -Milliseconds ((Get-Random -Maximum 1000) * $Scalar * [System.Math]::Pow($Base, $i)) } } } } |