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當我將web角色添加到我的node.js項目時，會生成一個download.ps1。這用於什麼？我無法在任何地方找到任何文檔。Azure download.ps1
我可以看到腳本做了什麼，我只是不知道它何時被調用或爲什麼。該文件的內容如下：如果你希望你的應用
download.ps1用於node.exe下載，所以這是非常重要的：
$runtimeUrl = $args[0]
$overrideUrl = $args[1]
$current = [string] (Get-Location -PSProvider FileSystem)
$client = New-Object System.Net.WebClient
function downloadWithRetry {
param([string]$url, [string]$dest, [int]$retry)
Write-Host
Write-Host "Attempt: $retry"
Write-Host
trap {
Write-Host $_.Exception.ToString()
if ($retry -lt 5) {
$retry=$retry+1
Write-Host
Write-Host "Waiting 5 seconds and retrying"
Write-Host
Start-Sleep -s 5
downloadWithRetry $url $dest $retry $client
}
else {
Write-Host "Download failed"
throw "Max number of retries downloading [5] exceeded"
}
}
$client.downloadfile($url, $dest)
}
function download($url, $dest) {
Write-Host "Downloading $url"
downloadWithRetry $url $dest 1
}
function copyOnVerify($file, $output) {
Write-Host "Verifying $file"
$verify = Get-AuthenticodeSignature $file
Out-Host -InputObject $verify
if ($verify.Status -ne "Valid") {
throw "Invalid signature for runtime package $file"
}
else {
mv $file $output
}
}
if ($overrideUrl) {
Write-Host "Using override url: $overrideUrl"
$url = $overrideUrl
}
else {
$url = $runtimeUrl
}
foreach($singleUrl in $url -split ";")
{
$suffix = Get-Random
$downloaddir = $current + "\sandbox" + $suffix
mkdir $downloaddir
$dest = $downloaddir + "\sandbox.exe"
download $singleUrl $dest
$final = $downloaddir + "\runtime.exe"
copyOnVerify $dest $final
if (Test-Path -LiteralPath $final)
{
cd $downloaddir
if ($host.Version.Major -eq 3)
{
.\runtime.exe -y | Out-Null
.\setup.cmd
}
else
{
Start-Process -FilePath $final -ArgumentList -y -Wait
$cmd = $downloaddir + "\setup.cmd"
Start-Process -FilePath $cmd -Wait
}
}
else
{
throw "Unable to verify package"
}
cd $current
if (Test-Path -LiteralPath $downloaddir)
{
Remove-Item -LiteralPath $downloaddir -Force -Recurse
}
}