Refreshed the REST test roles section with ready-to-use steps

Author: HeidiSteen

articles/search/search-howto-aad.md

@@ -11,7 +11,7 @@ ms.date: 1/05/2022
 ms.custom: subject-rbac-steps
 ---
 
-# Authorize access to a search apps using Azure Active Directory
+# Authorize access to a search app using Azure Active Directory
 
 > [!IMPORTANT]
 > Role-based access control for data plane operations, such as creating or querying an index, is currently in public preview and available under [supplemental terms of use](https://azure.microsoft.com/support/legal/preview-supplemental-terms/). This functionality is only available in public cloud regions and may impact the latency of your operations while the functionality is in preview. For more information on preview limitations, see [RBAC preview limitations](search-security-rbac.md#preview-limitations).

articles/search/search-manage.md

@@ -62,8 +62,8 @@ Several aspects of a search service are determined when the service is provision
 Service administration includes the following tasks:
 
 * [Adjust capacity](search-capacity-planning.md) by adding or removing replicas and partitions
-* [Manage API keys](search-security-api-keys.md) used for admin and query operations
-* [Allow or deny access using Azure roles](search-security-rbac.md)
+* [Manage API keys](search-security-api-keys.md) used for content access
+* [Manage Azure roles](search-security-rbac.md) used for content and service access
 * [Configure IP firewall rules](service-configure-firewall.md) to restrict access by IP address
 * [Configure a private endpoint](service-create-private-endpoint.md) using Azure Private Link and a private virtual network
 * [Monitor service health and operations](monitor-azure-cognitive-search.md): storage, query volumes, and latency

articles/search/search-security-rbac.md

@@ -216,19 +216,111 @@ When testing roles, remember that roles are cumulative and inherited roles that
 
 ### [**REST API**](#tab/test-rest)
 
-+ Register your REST client with Azure Active Directory. 
+This approach assumes Postman as the REST client and uses a Postman collection and variables to provided the bearer token. You'll need Azure CLI or another tool to create a security principal for the REST client.
 
-+ Revise your code to use a [Search REST API](/rest/api/searchservice/) (any supported version) and set the **Authorization** header on requests, replacing the **api-key** header.
+1. Open a command shell for Azure CLI. If you don't have Azure CLI installed, you can open [Create a service principal](/cli/azure/create-an-azure-service-principal-azure-cli#1-create-a-service-principal), select **Try It**. 
 
-  :::image type="content" source="media/search-security-rbac/rest-authorization-header.png" alt-text="Screenshot of an HTTP request with an Authorization header" border="true":::
+1. Sign in to your Azure subscription.
+
+   ```azurecli
+   az login
+   ```
+
+1. First, get your subscription ID. In the console, enter the following command:
+
+   ```azurecli
+   az account show --query id -o tsv
+   ````
+
+1. Create a resource group for your security principal, specifying a location and name. This example uses the West US region.
+
+   ```azurecli
+   az group create -l westus -n MyResourceGroup
+   ```
+
+1. Create the service principal, replacing the placeholder values with valid values. You'll need a descriptive security principal name, subscription ID, resource group name. This example uses the "Search Service Contributor" (quote enclosed) role.
+
+    ```azurecli
+    az ad sp create-for-rbac --name mySecurityPrincipalName --role "Search Service Contributor" --scopes /subscriptions/mySubscriptionID/resourceGroups/myResourceGroupName
+    ```
+
+   A successful response includes "appId", "password", and "tenant". You'll use these values for the variables "clientId", "clientSecret", and "tenant".
+
+1. Start a new Postman collection and edit its properties. In the Variables tab, create the following variables:
+
+    | Variable | Description |
+    |----------|-------------|
+    | clientId | Provide the previously generated "appID" that you created in Azure AD. |
+    | clientSecret | Provide the "password" that was created for your client. |
+    | tenantId | Provide the "tenant" that was returned in the previous step. |
+    | subscriptionId | Provide the subscription ID for your subscription. |
+    | resource | Enter `https://search.azure.com`. | 
+    | bearerToken | (leave blank; the token is generated programmatically) |
+
+1. In the Authorization tab, select **Bearer Token** as the type.
+
+1. In the **Token** field, specify the variable placeholder `{{bearerToken}}`.
+
+1. In the Pre-request Script tab, paste in the following script:
+
+    ```javascript
+    pm.test("Check for collectionVariables", function () {
+        let vars = ['clientId', 'clientSecret', 'tenantId', 'subscriptionId'];
+        vars.forEach(function (item, index, array) {
+            console.log(item, index);
+            pm.expect(pm.collectionVariables.get(item), item + " variable not set").to.not.be.undefined;
+            pm.expect(pm.collectionVariables.get(item), item + " variable not set").to.not.be.empty; 
+        });
+    
+        if (!pm.collectionVariables.get("bearerToken") || Date.now() > new Date(pm.collectionVariables.get("bearerTokenExpiresOn") * 1000)) {
+            pm.sendRequest({
+                url: 'https://login.microsoftonline.com/' + pm.collectionVariables.get("tenantId") + '/oauth2/token',
+                method: 'POST',
+                header: 'Content-Type: application/x-www-form-urlencoded',
+                body: {
+                    mode: 'urlencoded',
+                    urlencoded: [
+                        { key: "grant_type", value: "client_credentials", disabled: false },
+                        { key: "client_id", value: pm.collectionVariables.get("clientId"), disabled: false },
+                        { key: "client_secret", value: pm.collectionVariables.get("clientSecret"), disabled: false },
+                        { key: "resource", value: pm.collectionVariables.get("resource") || "https://search.azure.com", disabled: false }
+                    ]
+                }
+            }, function (err, res) {
+                if (err) {
+                    console.log(err);
+                } else {
+                    let resJson = res.json();
+                    pm.collectionVariables.set("bearerTokenExpiresOn", resJson.expires_on);
+                    pm.collectionVariables.set("bearerToken", resJson.access_token);
+                }
+            });
+        }
+    });
+    ```
+
+1. Save the collection.
+
+1. Send a request that uses the variables you've specified. For the "Search Index Data Reader" role, you can query an index (remember to provide a valid search service name on the URI):
+
+   ```http
+   POST https://<service-name>.search.windows.net/indexes/hotels-quickstart/docs/search?api-version=2020-06-20
+   {
+    "queryType": "simple",
+    "search": "motel",
+    "filter": "",
+    "select": "HotelName,Description,Category,Tags",
+    "count": true
+    }
+   ```
 
 For more information on how to acquire a token for a specific environment, see [Microsoft identity platform authentication libraries](../active-directory/develop/reference-v2-libraries.md).
 
 ### [**.NET SDK**](#tab/test-csharp)
 
-The Azure SDK for .NET supports an authorization header in the [NuGet Gallery | Azure.Search.Documents 11.4.0-beta.2](https://www.nuget.org/packages/Azure.Search.Documents/11.4.0-beta.2) package.
+See [Authorize access to a search app using Azure Active Directory](/search-howto-aad.md) for instructions that create an identity for your client app, assign a role, and call [DefaultAzureCredential()](/dotnet/api/azure.identity.defaultazurecredential).
 
-Configuration is required to register an application with Azure Active Directory, and to obtain and pass authorization tokens:
+The Azure SDK for .NET supports an authorization header in the [NuGet Gallery | Azure.Search.Documents 11.4.0-beta.2](https://www.nuget.org/packages/Azure.Search.Documents/11.4.0-beta.2) package. Configuration is required to register an application with Azure Active Directory, and to obtain and pass authorization tokens:
 
 + When obtaining the OAuth token, the scope is "https://search.azure.com/.default". The SDK requires the audience to be "https://search.azure.com". The ".default" is an Azure AD convention.