Public/Get-EvergreenApp.ps1
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Function Get-EvergreenApp { <# .EXTERNALHELP Evergreen-help.xml #> [OutputType([System.Management.Automation.PSObject])] [CmdletBinding(SupportsShouldProcess = $False, HelpURI = "https://stealthpuppy.com/evergreen/use/")] [Alias("gea")] param ( [Parameter( Mandatory = $True, Position = 0, ValueFromPipeline, ValueFromPipelineByPropertyName, HelpMessage = "Specify an application name. Use Find-EvergreenApp to list supported applications.")] [ValidateNotNull()] [System.String] $Name, [Parameter( Mandatory = $False, Position = 1, HelpMessage = "Specify a hashtable of parameters to pass to the internal application function.")] [System.Collections.Hashtable] $AppParams ) Begin {} Process { try { # Build a path to the application function # This will build a path like: Evergreen/Apps/Get-TeamViewer.ps1 $Function = [System.IO.Path]::Combine($MyInvocation.MyCommand.Module.ModuleBase, "Apps", "Get-$Name.ps1") } catch { Throw "$($MyInvocation.MyCommand): Failed to combine: $($MyInvocation.MyCommand.Module.ModuleBase), Apps, Get-$Name.ps1" } #region Test that the function exists and run it to return output If (Test-Path -Path $Function -PathType "Leaf" -ErrorAction "SilentlyContinue") { Write-Verbose -Message "$($MyInvocation.MyCommand): Function exists: $Function." try { # Dot source the function so that we can use it # Import function here rather than at module import to reduce IO and memory footprint as the module grows # This also allows us to add an application manifest and function without having to re-load the module Write-Verbose -Message "$($MyInvocation.MyCommand): Dot sourcing: $Function." . $Function } catch { Throw "$($MyInvocation.MyCommand): Failed to load function: $Function." } try { # Run the function to grab the application details; pass the per-app manifest to the app function # Application manifests are located under Evergreen/Manifests If ($PSBoundParameters.ContainsKey("AppParams")) { Write-Verbose -Message "$($MyInvocation.MyCommand): Adding AppParams." $params = @{ res = (Get-FunctionResource -AppName $Name) } $params += $AppParams } Else { $params = @{ res = (Get-FunctionResource -AppName $Name) } } Write-Verbose -Message "$($MyInvocation.MyCommand): Calling: Get-$Name." $Output = & Get-$Name @params } catch { Throw "$($MyInvocation.MyCommand): Internal application function: $Function, failed with: $($_.Exception.Message)" } # If we get an object, return it to the pipeline # Sort object on the Version property If ($Output) { Write-Verbose -Message "$($MyInvocation.MyCommand): Output result from: $Function." Write-Output -InputObject ($Output | Sort-Object -Property @{ Expression = { [System.Version]$_.Version }; Descending = $true } -ErrorAction "SilentlyContinue") } Else { Throw "$($MyInvocation.MyCommand): Failed to capture output from: Get-$Name." } } Else { Write-Warning -Message "Please list valid application names with Find-EvergreenApp." Write-Warning -Message "Documentation on how to contribute a new application to the Evergreen project can be found at: $($script:resourceStrings.Uri.Docs)." Throw "$($MyInvocation.MyCommand): Cannot find application script at: $Function." } #endregion } End { # Remove these variables for next run Remove-Variable -Name "Output", "Function" -ErrorAction "SilentlyContinue" } } |