How to programatically know the current region in an azure role?

Question

I need to programmatically find the current region (e.g \"West US\" or \"East US\") where my current role is running. Is there any API to find this?

Answer 1

You can only get that information if you use the Management Api.

Either by REST or you can use the c# Windows Azure Management Libraries (Prerelease on nuget).

But due note that you need to set up management certificates to get the information.

An easier alternative is to create a setting in your cloud service and set the values when you create the deployment configuration. I do this and have deployment configurations for the regions I target.

    using( var azure = CloudContext.Clients.CreateComputeManagementClient(...))
    {
       var service = await  azure.HostedServices.GetDetailedAsync("servicename");
      //   service.Properties.Location
      //  service.Properties.AffinityGroup;

    }
    using(var azure = CloudContext.Clients.CreateManagementClient(...))
    {
      var affinityGroup = await  azure.AffinityGroups.GetAsync("name",new CancellationToken());
      //  affinityGroup.Location
    }

Here ... is the credentials, either a management certificate or your WAAD oauth tokens. (ADAL : Active Directory Authentication Library) can be used for tokens.

here is the code for getting credentials from a certificate:

    public static CertificateCloudCredentials GetCertificateCloudCredentials(
        string certificateThumbprint, string subscriptionId)
    {
        var certificate = CertificateHelper.LoadCertificate(
            StoreName.My,
            StoreLocation.LocalMachine,
            certificateThumbprint);

        if (certificate == null)
            throw new Exception(
                string.Format("Certificate with thumbprint '{0}' not found",
                certificateThumbprint));

        var cred = new CertificateCloudCredentials(
            subscriptionId,
            certificate
         );
        return cred;
    }