Deployments - What If

POST https://management.azure.com/subscriptions/00000000-0000-0000-0000-000000000001/resourcegroups/my-resource-group/providers/Microsoft.Resources/deployments/my-deployment/whatIf?api-version=2021-04-01

{
  "properties": {
    "templateLink": {
      "uri": "https://example.com/exampleTemplate.json"
    },
    "parameters": {},
    "mode": "Incremental"
  }
}

package armresources_test

import (
	"context"
	"log"

	"github.com/Azure/azure-sdk-for-go/sdk/azcore/to"
	"github.com/Azure/azure-sdk-for-go/sdk/azidentity"
	"github.com/Azure/azure-sdk-for-go/sdk/resourcemanager/resources/armresources"
)

// Generated from example definition: https://github.com/Azure/azure-rest-api-specs/blob/4fd842fb73656039ec94ce367bcedee25a57bd18/specification/resources/resource-manager/Microsoft.Resources/stable/2021-04-01/examples/PostDeploymentWhatIfOnResourceGroup.json
func ExampleDeploymentsClient_BeginWhatIf() {
	cred, err := azidentity.NewDefaultAzureCredential(nil)
	if err != nil {
		log.Fatalf("failed to obtain a credential: %v", err)
	}
	ctx := context.Background()
	clientFactory, err := armresources.NewClientFactory("<subscription-id>", cred, nil)
	if err != nil {
		log.Fatalf("failed to create client: %v", err)
	}
	poller, err := clientFactory.NewDeploymentsClient().BeginWhatIf(ctx, "my-resource-group", "my-deployment", armresources.DeploymentWhatIf{
		Properties: &armresources.DeploymentWhatIfProperties{
			Mode:         to.Ptr(armresources.DeploymentModeIncremental),
			Parameters:   map[string]any{},
			TemplateLink: &armresources.TemplateLink{},
		},
	}, nil)
	if err != nil {
		log.Fatalf("failed to finish the request: %v", err)
	}
	res, err := poller.PollUntilDone(ctx, nil)
	if err != nil {
		log.Fatalf("failed to pull the result: %v", err)
	}
	// You could use response here. We use blank identifier for just demo purposes.
	_ = res
	// If the HTTP response code is 200 as defined in example definition, your response structure would look as follows. Please pay attention that all the values in the output are fake values for just demo purposes.
	// res.WhatIfOperationResult = armresources.WhatIfOperationResult{
	// 	Properties: &armresources.WhatIfOperationProperties{
	// 		Changes: []*armresources.WhatIfChange{
	// 			{
	// 				After: map[string]any{
	// 					"name": "myExistingIdentity",
	// 					"type": "Microsoft.ManagedIdentity/userAssignedIdentities",
	// 					"apiVersion": "2018-11-30",
	// 					"id": "/subscriptions/00000000-0000-0000-0000-000000000001/resourceGroups/my-resource-group/providers/Microsoft.ManagedIdentity/userAssignedIdentities/myExistingIdentity",
	// 					"location": "westus2",
	// 					"tags":map[string]any{
	// 						"myNewTag": "my tag value",
	// 					},
	// 				},
	// 				Before: map[string]any{
	// 					"name": "myExistingIdentity",
	// 					"type": "Microsoft.ManagedIdentity/userAssignedIdentities",
	// 					"apiVersion": "2018-11-30",
	// 					"id": "/subscriptions/00000000-0000-0000-0000-000000000001/resourceGroups/my-resource-group/providers/Microsoft.ManagedIdentity/userAssignedIdentities/myExistingIdentity",
	// 					"location": "westus2",
	// 				},
	// 				ChangeType: to.Ptr(armresources.ChangeTypeModify),
	// 				Delta: []*armresources.WhatIfPropertyChange{
	// 					{
	// 						Path: to.Ptr("tags.myNewTag"),
	// 						After: "my tag value",
	// 						PropertyChangeType: to.Ptr(armresources.PropertyChangeTypeCreate),
	// 				}},
	// 				ResourceID: to.Ptr("/subscriptions/00000000-0000-0000-0000-000000000001/resourceGroups/my-resource-group/providers/Microsoft.ManagedIdentity/userAssignedIdentities/myExistingIdentity"),
	// 			},
	// 			{
	// 				After: map[string]any{
	// 					"name": "myNewIdentity",
	// 					"type": "Microsoft.ManagedIdentity/userAssignedIdentities",
	// 					"apiVersion": "2018-11-30",
	// 					"id": "/subscriptions/00000000-0000-0000-0000-000000000001/resourceGroups/my-resource-group/providers/Microsoft.ManagedIdentity/userAssignedIdentities/myNewIdentity",
	// 					"location": "eastus",
	// 					"tags":map[string]any{
	// 						"myOtherNewTag": "another new tag value",
	// 					},
	// 				},
	// 				ChangeType: to.Ptr(armresources.ChangeTypeCreate),
	// 				ResourceID: to.Ptr("/subscriptions/00000000-0000-0000-0000-000000000001/resourceGroups/my-resource-group/providers/Microsoft.ManagedIdentity/userAssignedIdentities/myNewIdentity"),
	// 		}},
	// 	},
	// 	Status: to.Ptr("succeeded"),
	// }
}

To use the Azure SDK library in your project, see this documentation. To provide feedback on this code sample, open a GitHub issue

const { ResourceManagementClient } = require("@azure/arm-resources");
const { DefaultAzureCredential } = require("@azure/identity");

/**
 * This sample demonstrates how to Returns changes that will be made by the deployment if executed at the scope of the resource group.
 *
 * @summary Returns changes that will be made by the deployment if executed at the scope of the resource group.
 * x-ms-original-file: specification/resources/resource-manager/Microsoft.Resources/stable/2021-04-01/examples/PostDeploymentWhatIfOnResourceGroup.json
 */
async function predictTemplateChangesAtResourceGroupScope() {
  const subscriptionId =
    process.env["RESOURCES_SUBSCRIPTION_ID"] || "00000000-0000-0000-0000-000000000001";
  const resourceGroupName = process.env["RESOURCES_RESOURCE_GROUP"] || "my-resource-group";
  const deploymentName = "my-deployment";
  const parameters = {
    properties: { mode: "Incremental", parameters: {}, templateLink: {} },
  };
  const credential = new DefaultAzureCredential();
  const client = new ResourceManagementClient(credential, subscriptionId);
  const result = await client.deployments.beginWhatIfAndWait(
    resourceGroupName,
    deploymentName,
    parameters
  );
  console.log(result);
}

To use the Azure SDK library in your project, see this documentation. To provide feedback on this code sample, open a GitHub issue

using System;
using System.Collections.Generic;
using System.Threading.Tasks;
using Azure;
using Azure.Core;
using Azure.Identity;
using Azure.ResourceManager;
using Azure.ResourceManager.Resources;
using Azure.ResourceManager.Resources.Models;

// Generated from example definition: specification/resources/resource-manager/Microsoft.Resources/stable/2021-04-01/examples/PostDeploymentWhatIfOnResourceGroup.json
// this example is just showing the usage of "Deployments_WhatIf" operation, for the dependent resources, they will have to be created separately.

// get your azure access token, for more details of how Azure SDK get your access token, please refer to https://learn.microsoft.com/en-us/dotnet/azure/sdk/authentication?tabs=command-line
TokenCredential cred = new DefaultAzureCredential();
// authenticate your client
ArmClient client = new ArmClient(cred);

// this example assumes you already have this ArmDeploymentResource created on azure
// for more information of creating ArmDeploymentResource, please refer to the document of ArmDeploymentResource
string subscriptionId = "00000000-0000-0000-0000-000000000001";
string resourceGroupName = "my-resource-group";
string scope = $"/subscriptions/{subscriptionId}/resourcegroups/{resourceGroupName}";
string deploymentName = "my-deployment";
ResourceIdentifier armDeploymentResourceId = ArmDeploymentResource.CreateResourceIdentifier(scope, deploymentName);
ArmDeploymentResource armDeployment = client.GetArmDeploymentResource(armDeploymentResourceId);

// invoke the operation
ArmDeploymentWhatIfContent content = new ArmDeploymentWhatIfContent(new ArmDeploymentWhatIfProperties(ArmDeploymentMode.Incremental)
{
    TemplateLink = null,
    Parameters = BinaryData.FromObjectAsJson(new Dictionary<string, object>()
    {
    }),
});
ArmOperation<WhatIfOperationResult> lro = await armDeployment.WhatIfAsync(WaitUntil.Completed, content);
WhatIfOperationResult result = lro.Value;

Console.WriteLine($"Succeeded: {result}");

To use the Azure SDK library in your project, see this documentation. To provide feedback on this code sample, open a GitHub issue