ensure autorest doesnt reach for npm registry

Author: ramsessanchez

tools/GenerateModules.ps1

@@ -63,10 +63,22 @@ if (Test-Path $coreCacheDir) {
 } else {
     Write-Host "WARNING: Autorest core cache directory not found at $coreCacheDir"
 }
+$modelerfourCacheDir = Join-Path $autorestHome "@autorest\modelerfour"
+if (Test-Path $modelerfourCacheDir) {
+    Write-Host "Autorest modelerfour cache versions: $(Get-ChildItem $modelerfourCacheDir -Directory | Select-Object -ExpandProperty Name)"
+    $modelerfourNodeModules = Join-Path $modelerfourCacheDir "4.24.3\node_modules\@autorest\modelerfour"
+    Write-Host "Cache modelerfour 4.24.3 node_modules present: $(Test-Path $modelerfourNodeModules)"
+} else {
+    Write-Host "WARNING: Autorest modelerfour cache directory not found at $modelerfourCacheDir"
+}
 Write-Host "npm registry: $(npm config get registry 2>&1)"
+Write-Host "npm_config_registry env: $env:npm_config_registry"
 Write-Host "NPM_CONFIG_USERCONFIG: $env:NPM_CONFIG_USERCONFIG"
 $userNpmrc = Join-Path $env:USERPROFILE ".npmrc"
 Write-Host "~/.npmrc exists: $(Test-Path $userNpmrc)"
+if (Test-Path $userNpmrc) {
+    Write-Host "~/.npmrc registry line: $(Select-String -Path $userNpmrc -Pattern '^registry=' | Select-Object -First 1 -ExpandProperty Line)"
+}
 Write-Host "--- End diagnostics ---"
 
 $RequiredGraphModules = @()

tools/GenerateServiceModule.ps1

@@ -69,6 +69,10 @@ $ApiVersion | ForEach-Object {
             else {
                 $FullModuleVersion = $ModuleMetadata.versions[$CurrentApiVersion].version
             }
+            # Route autorest's internal npm registry calls (fetchPackageMetadata for extension
+            # resolution) through the private feed. The public npm registry is DNS-blocked by
+            # 1ES supply-chain security enforcement on release pipelines.
+            $env:npm_config_registry = "https://microsoftgraph.pkgs.visualstudio.com/0985d294-5762-4bc2-a565-161ef349ca3e/_packaging/PowerShell_V2_Build/npm/registry/"
             $autorestLog = [System.IO.Path]::Combine([System.IO.Path]::GetTempPath(), "autorest-$($ModuleFullName -replace '[^a-zA-Z0-9-]', '-').log")
             npx autorest --verbose --max-memory-size=$MaxMemorySize --module-version:$FullModuleVersion --module-name:$ModuleFullName --service-name:$Module --input-file:$OpenApiFile $AutoRestModuleConfig --max-cpu=2 --network-calls=2 2>&1 | Out-File -FilePath $autorestLog -Encoding utf8
             $autorestExitCode = $LASTEXITCODE