Referencing Existing Azure Infrastructure

Sometimes you will need to reference existing Azure resources in Pulumi.

In my example, I need to pull in a Web App.

First of is a cool livbaey what microsfot priovied called ResourceIdentifier. You provide it with the resourceID from Azure and it will provide you with details of resource:

*ResourceGroupName *Subscritpon *Location *Name of Resource.

To find the Resource ID in the Azure Portal, locate and open the resource. In the top left-hand corner, click on "JSON view". A new window will appear with the Resource ID.

var webAppDetails = new ResourceIdentifier("/subscriptions/GUID/resourceGroups/web-portal/providers/Microsoft.Web/sites/web-portal");

You can then use this your code:

        var portalDetails = GetWebApp.Invoke(new GetWebAppInvokeArgs
        {
            Name = webAppDetails.Name,
            ResourceGroupName = webAppDetails.ResourceGroupName,
        });

In this example, we use Pulumi's GetWebApp method, providing the name and resource group of the web app. The output from webAppDetails is provided by the ResourceIdentifier.

Pulumi provides the GetWebApp method, which you can find here. The example shown there demonstrates its usage.

In my code, we use the GetWebApp method to create an object/variable called PortalDetails. We then call .invoke and provide GetWebAppInvokeArgs, which expects the required arguments, such as the name and resource group.

Again we can then use the results in our code.

HostName = portalDetails.DefaultHostName

Some time and case c# sharp cant provide the vaule, as it only know it when the code is excuted. So you have to do the following: Again we can then use the results in our code.

HostName = Apply(x => x.DefaultHostName),