91 lines
3.5 KiB
PowerShell
91 lines
3.5 KiB
PowerShell
function Get-PackageFileV2 {
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<#
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.SYNOPSIS
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Downloads a specific file from proget and returns it.
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.PARAMETER FeedSource
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[string] Source feed used to look up the package by
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.PARAMETER Name
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[string] Package name to lookup
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.PARAMETER Version
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[string] Package version to lookup
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.PARAMETER PackagePath
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[string] Path in the proget folder for the file to retrieve the contents from
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.PARAMETER Credential
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[PSCredential] Credential used for talking to feeds as needed
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#>
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[CmdletBinding(DefaultParameterSetName = 'RawArgs')]
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[OutputType([string])]
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Param(
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[Parameter(Mandatory = $true, ParameterSetName = 'RawArgs')]
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[string]$FeedSource,
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[Parameter(Mandatory = $true, ParameterSetName = 'RawArgs')]
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[string]$Name,
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[Parameter(Mandatory = $true, ParameterSetName = 'RawArgs')]
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[string]$Version,
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[Parameter(Mandatory = $true, ParameterSetName = 'Package')]
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[object]$Package,
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[Parameter(Mandatory = $true)]
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[string]$PackagePath,
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[Parameter(Mandatory = $false)]
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[PSCredential]$Credential = $null
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)
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## TODO: Can this pull from the local filesystem if it exists?
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## This would let us fetch faster if the versions match as we could avoid network hops.
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$loglead = (Get-LogLeadName)
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if ($PSCmdlet.ParameterSetName -eq 'Package') {
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$FeedSource = $Package.Feed.Source
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$Name = $Package.Name
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$Version = $Package.Version
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}
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# Replace package path back slashes with forward slashes, to play nicely in the URL.
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$packagePath = $packagePath.Replace("\", "/")
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# Make sure the input feed URL is a nuget feed.
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$feedUri = $null
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try {
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$feedUri = [System.Uri]::new($FeedSource)
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if ($feedUri.Segments.Count -lt 3) {
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throw "$logLead : FeedSource [$FeedSource] parameter for package [$Name] should have at least three url segments (host, nuget, feed name) and does not have enough feed segments provided."
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}
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$segmentCompare = 'nuget/'
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if ($feedUri.Segments[1] -ne $segmentCompare) {
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throw "$logLead : FeedSource [$FeedSource] parameter for package [$Name] should use the url segment [$segmentCompare], not [$($feedUri.Segments[1])]."
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}
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} catch {
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Write-Error "$logLead : FeedSource [$FeedSource] parameter for package [$Name] was supplied incorrectly. Expected url pattern should look like: [https://feed.com/nuget/feed.name]"
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Write-Error $_.Exception.Message
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return
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}
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# we now have a valid feedUri, it has the right segment count, and we can infer otherwise as needed
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$feedName = $feedUri.Segments[2].TrimEnd('/')
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$baseUrl = $feedUri.GetComponents([System.UriComponents]::SchemeAndServer, [System.UriFormat]::SafeUnescaped)
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$downloadUrl = "$baseUrl/package-files/download?packageId=$Name&version=$Version&feedName=$feedName&path=$packagePath"
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# If a PSCredential is specified build a basic authentication header.
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$headers = (Get-BasicAuthHeader -Credential $Credential)
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try {
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Write-Host "$loglead : Querying for package files at endpoint: $downloadUrl"
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$response = Invoke-ProgetRequest -URI $downloadUrl -Headers $headers
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# StreamReader interprets byte order marks and skips it, if it exists.
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$result = [System.IO.StreamReader]::new($response.RawContentStream).ReadToEnd()
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Write-Host "$loglead : Done Querying for package files at endpoint: $downloadUrl"
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return $result
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} catch {
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Write-Host $_.Exception.Message
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return $null
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}
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}
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