Umbraco-CMS/src/Umbraco.Core/Install/InstallSteps/TelemetryIdentifierStep.cs

using System;
using System.Threading.Tasks;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;
using Microsoft.Extensions.Options;
using Umbraco.Cms.Core.Configuration;
using Umbraco.Cms.Core.Configuration.Models;
using Umbraco.Cms.Core.Install.Models;
using Umbraco.Cms.Core.Telemetry;
using Umbraco.Cms.Web.Common.DependencyInjection;

namespace Umbraco.Cms.Core.Install.InstallSteps
{
    [InstallSetupStep(InstallationType.NewInstall | InstallationType.Upgrade,
        "TelemetryIdConfiguration", 0, "",
        PerformsAppRestart = false)]
    public class TelemetryIdentifierStep : InstallSetupStep<object>
    {
        private readonly IOptions<GlobalSettings> _globalSettings;
        private readonly ISiteIdentifierService _siteIdentifierService;

        public TelemetryIdentifierStep(
            IOptions<GlobalSettings> globalSettings,
            ISiteIdentifierService siteIdentifierService)
        {
            _globalSettings = globalSettings;
            _siteIdentifierService = siteIdentifierService;
        }

        public override Task<InstallSetupResult?> ExecuteAsync(object model)
        {
            _siteIdentifierService.TryCreateSiteIdentifier(out _);
            return Task.FromResult<InstallSetupResult?>(null);
        }

        public override bool RequiresExecution(object model)
        {
            // Verify that Json value is not empty string
            // Try & get a value stored in appSettings.json
            var backofficeIdentifierRaw = _globalSettings.Value.Id;

            // No need to add Id again if already found
            return string.IsNullOrEmpty(backofficeIdentifierRaw);
        }
    }
}