[Eng] Update CreateMappings_rules.json while build autorest based module (Azure#27390)

Author: VeryEarly

tools/BuildScripts/AdaptAutorestModule.ps1

@@ -244,4 +244,9 @@ if ($existingCsprojPath) {
 <#
     Create or refresh generate-info.json for submodule
 #>
-New-GenerateInfoJson -GeneratedDirectory $subModulePath
+New-GenerateInfoJson -GeneratedDirectory $subModulePath
+
+<#
+    Update module in tools\CreateMappings_rules.json
+#>
+Update-MappingJson -RepoRoot $RepoRoot -ModuleName $ModuleRootName

tools/BuildScripts/BuildScripts.psm1

@@ -226,4 +226,25 @@ function New-GenerateInfoJson {
         Write-Host "Generating generate-info.json file: $generateInfoJsonPath"
         $generateInfoJson | Set-Content -Path $generateInfoJsonPath -Force
     }
+}
+
+function Update-MappingJson {
+    Param(
+        [string]
+        ${ModuleName},
+        [string]
+        ${RepoRoot}
+    )
+    process {
+        Write-Host "Updating MappingJson: CreateMappings_rules.json." -ForegroundColor Yellow
+        $MappingPath = Join-Path $RepoRoot "tools" "CreateMappings_rules.json"
+        $MappingObject = Get-Content -Path $MappingPath | ConvertFrom-Json
+        Foreach ($Item in $MappingObject) {
+            If ($ModuleName -eq $Item.regex -or $ModuleName -eq $Item.module) {
+                return
+            }
+        }
+        $MappingObject = $MappingObject + @{module = $ModuleName; alias = $ModuleName }
+        ConvertTo-Json $MappingObject -Depth 1 | Set-Content -Path $MappingPath
+    }
 }

tools/CreateMappings_rules.json

@@ -947,5 +947,9 @@
   {
     "module": "DeviceRegistry",
     "alias": "DeviceRegistry"
+  },
+  {
+    "module": "IoTOperationsService",
+    "alias": "IoTOperationsService"
   }
 ]