ARR Install script for AWS Beasntalk extension working on PowerShell. (This code working on AWS Beasntalk instance. (IIS 8.5, Windows 2012 RC2))

Install-ARRFromWeb.ps1

begin {
	$TargetPath = $ExecutionContext.SessionState.Path.GetUnresolvedProviderPathFromPSPath(‘.\’)
	iex ((new-object net.webclient).DownloadString('https://chocolatey.org/install.ps1'))
	choco install curl

	$packages = @( `
		@{ Name = "webfarm.msi"; Url = "https://download.microsoft.com/download/F/E/2/FE2E2E07-22B5-4875-9A36-8B778D157F91/WebFarm2_x64.msi" }, `
		@{ Name = "rewrite.msi"; Url = "https://download.microsoft.com/download/6/7/D/67D80164-7DD0-48AF-86E3-DE7A182D6815/rewrite_2.0_rtw_x64.msi" }, `
		@{ Name = "arr.msi"; Url = "https://download.microsoft.com/download/E/9/8/E9849D6A-020E-47E4-9FD0-A023E99B54EB/requestRouter_amd64.msi" }
	)

	Push-Location $env:TEMP
	function download( $url, $filename ) {
		if(!(Test-Path $filename) -or $force) {
			curl -OutFile $filename $url
			if( $LASTEXITCODE -ne 0 -or !(Test-Path $filename) ) {
				Pop-Location
				throw "Failed to download $url to $filename"
				exit 1
			}
		}
	}

	Write-Host "Downloading MSI packages..."
	$packages | %{ 
		Write-Host ("Downloading MSI package: {0}" -f $_.Name)
		download $_.Url $_.Name
	}
}
process {
	$remotePackageDir = join-path $TargetPath "\"
	$packageNames = $packages | %{ $_.Name } 
	Write-Host "Copying packages to server: $packageNames"
	$packageNames | cp -Destination $remotePackageDir
	Write-Host "Done. Performing installation..."
	#$Session = $targetHost.Connect()
	Invoke-Command -ArgumentList $packageNames -ScriptBlock {
		if( Get-Service was ) {
			Write-Host "Stopping IIS and WAS..."
			Stop-Service was -Force
		}

		Push-Location $targetHost.ScriptShareLocalPath
		$args | %{
			Write-Host "Installing MSI package: $_"
			$exitCode = (Start-Process -FilePath "msiexec" -ArgumentList "/q /i $_ /L*v install.log" -PassThru -Wait).ExitCode
			#if( $exitCode -ne 0 ) {
			#	Pop-Location
			#	throw "MSIEXEC exited $exitCode Failed to install $_"
			#	exit 1
			#}
			rm $_
		}
		Pop-Location

		if( Get-Service was ) {
			Start-Service was,w3svc -Verbose
		}
	}
	if( $? ) {
		Write-Host "ARR installed!"
	} else {
		cp $remotePackageDir\install.log -Verbose
		gc install.log | ?{ $_ -match "error|fail|requisite" }
	}
}
end {
	Pop-Location
}