Private/HighestVer.ps1
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function HighestVer { [CmdletBinding()] param ( [Parameter(Mandatory=$true)] [string]$WAPIHost, [Parameter(Mandatory=$true)] [Microsoft.PowerShell.Commands.WebRequestSession]$WebSession, [switch]$IgnoreCertificateValidation ) try { # Query the grid master schema for the list of supported versions Write-Verbose "Querying schema for supported versions" $versions = (Invoke-IBWAPI -Uri "https://$WAPIHost/wapi/v1.1/?_schema" -WebSession $WebSession -IgnoreCertificateValidation:$IgnoreCertificateValidation).supported_versions # Historically, these are returned in order. But just in case they aren't, we'll # explicitly sort them via the [Version] cast which is an easy way to make sure you # end up with 1,2,11,22 instead of 1,11,2,22. $versions = $versions | Sort-Object @{E={[Version]$_}} # set the most recent (last) one in the sorted list return $versions[-1] } catch { if ($_.ToString() -eq 'AdmConProtoError: Unknown argument: _schema=') { Write-Verbose "Schema query failed, attempting to scrape wapidoc HTML." # We're likely dealing with a pre-1.7.5 WAPI version that doesn't support # schema querying. So we're going to have to scrape the WAPI version # from /wapidoc HTML. $reVersion = '<title>.*WAPI ([\.0-9]+).*</title>' # get the wapidoc home page $response = Invoke-RestMethod "https://$WAPIHost/wapidoc" if ($response -match $reVersion) { # return the version we found return $matches[1] } else { throw "Unable to parse WAPI version from wapidoc HTML." } } else { # just re-throw everything else throw } } } |