I have a simple console app that works fine locally. I'm trying to put it in an Azure DevOps pipeline and I encounter an error executing it in the pipeline. It runs via an on-prem AzDO agent.
I'm somewhat new .net core and dependency injection. This is a .net core 7 app. I started with the source from https://github.com/Azure-Samples/active-directory-dotnetcore-daemon-v2/tree/master/1-Call-MSGraph. I added 3 statements between the comment lines below. I also updated the MSGraph query to return the information I seek vs number of users. I'd prefer to use environment variables vs the appsettings.json file, but it always gives an error that the basePath cannot be null, even if I put a string as the parameter for GetDefaultInstance. I'm not even sure I need the top two lines I inserted. There error is the same if I leave that out.
I'm not finding good examples or documentation for configuring TokenAcquirerFactory. It seems like maybe I do this in FileConfiguration or something instead. I also couldn't find any other questions dealing with TokenAcquirerFactory.
Any and all help is appreciated. Thanks!
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Graph;
using Microsoft.Identity.Abstractions;
using Microsoft.Identity.Web;
using System;
using System.Threading.Tasks;
namespace daemon_console
{
class CheckCertExpirationDate
{
static async Task Main(string[] _)
{
// added from here
var builder = new ConfigurationBuilder()
.SetBasePath(System.IO.Directory.GetCurrentDirectory())
.AddJsonFile("appsettings.json")
.AddEnvironmentVariables();
var configuration = builder.Build();
// this outputs to true so I know the file exists
Console.WriteLine(System.IO.File.Exists("appsettings.json"));
// added to here
// error occurs on the line below
TokenAcquirerFactory tokenAcquirerFactory = TokenAcquirerFactory.GetDefaultInstance();
IServiceCollection services = tokenAcquirerFactory.Services;
services.AddMicrosoftGraph();
var serviceProvider = tokenAcquirerFactory.Build();
try
{
GraphServiceClient graphServiceClient = serviceProvider.GetRequiredService<GraphServiceClient>();
var cert = await graphServiceClient.DeviceManagement.ApplePushNotificationCertificate.Request().WithAppOnly().GetAsync();
Console.WriteLine(cert.ExpirationDateTime);
Console.WriteLine($"{cert.ExpirationDateTime}");
}
catch (ServiceException e)
{
Console.WriteLine("We could not retrieve the expiration date: " + $"{e}");
}
}
}
}
This is the error I encounter:
Unhandled exception. System.ArgumentNullException: Value cannot be null. (Parameter 'basePath')
at System.ThrowHelper.Throw(String paramName)
at Microsoft.Extensions.Configuration.FileConfigurationExtensions.SetBasePath(IConfigurationBuilder builder, String basePath)
at Microsoft.Identity.Web.TokenAcquirerFactory.ReadConfiguration()
at Microsoft.Identity.Web.TokenAcquirerFactory.GetDefaultInstance(String configSection)
at daemon_console.CheckCertExpirationDate.Main(String[] _) in D:\a\1\s\CheckCertExpirationDate\CheckCertExpirationDate\CheckCertExpirationDate.cs:line 34
at daemon_console.CheckCertExpirationDate.<Main>(String[] _)
