openpbs/.appveyor/Retry-Command.ps1

# Copyright (C) 1994-2018 Altair Engineering, Inc.
# For more information, contact Altair at www.altair.com.
#
# This file is part of the PBS Professional ("PBS Pro") software.
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#
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# later version.
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# See the GNU Affero General Public License for more details.
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Function Retry-Command {
    [CmdletBinding()]
    Param
    (
        [Parameter(Mandatory = $true, Position = 1, ValueFromPipeline = $true)]
        [ScriptBlock]$Command,

        [Parameter(Mandatory = $false, Position = 2)]
        [ValidateRange(0, [UInt32]::MaxValue)]
        [UInt32]$Retry = 120,

        [Parameter(Mandatory = $false, Position = 3)]
        [ValidateRange(0, [UInt32]::MaxValue)]
        [UInt32]$Timeout = 1000

    )

    Begin {
        $StrCommand = $Command.ToString().Trim()
    }

    Process {
        $lasterr = $false
        for ($i = 1; $i -le $Retry; $i++) {
            Write-Host -ForegroundColor DarkCyan -NoNewLine ("{0} ... attempt = {1}" -f $StrCommand, $i)
            try {
                $cmdOutput = & $Command
                if ($LastExitCode -ne 0) {
                    if ($cmdOutput) {
                        throw $cmdOutput
                    } else {
                        throw "{0} exited with {1}" -f $StrCommand,$LastExitCode
                    }
                }
                Write-Host -ForegroundColor Green ' ... Ok'
                $cmdOutput
                $lasterr = $false
                Break
            } catch {
                Write-Host -ForegroundColor Red ' ... Failed'
                $lasterr = $_.Exception
                Start-Sleep -Milliseconds $Timeout
            }
        }
        if ($lasterr) {
            throw $lasterr
        }
    }
}