ApplicationContextManagerAsyncLocal.cs

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//-----------------------------------------------------------------------
// <copyright file="ApplicationContextManager.cs" company="Marimer LLC">
//     Copyright (c) Marimer LLC. All rights reserved.
//     Website: https://cslanet.com
// </copyright>
// <summary>Application context manager using AsyncLocal</summary>
//-----------------------------------------------------------------------
using System.Security.Principal;
using System.Threading;
 
namespace Csla.Core
{
  public class ApplicationContextManagerAsyncLocal : IContextManagerLocal
  {
    private readonly AsyncLocal<ContextDictionary> _localContext = new();
    private readonly AsyncLocal<ContextDictionary> _clientContext = new();
    private readonly AsyncLocal<IPrincipal> _principal = new();
 
    public bool IsStatefulContext => true;
 
    public bool IsValid
    {
      get { return true; }
    }
 
    public virtual IPrincipal GetUser()
    {
      IPrincipal result = _principal.Value;
      if (result == null)
      {
        result = new System.Security.Claims.ClaimsPrincipal();
        SetUser(result);
      }
      return result;
    }
 
    public virtual void SetUser(IPrincipal principal)
    {
      _principal.Value = principal;
    }
 
    public ContextDictionary GetLocalContext()
    {
      return _localContext.Value;
    }
 
    public void SetLocalContext(ContextDictionary localContext)
    {
      _localContext.Value = localContext;
    }
 
    public ContextDictionary GetClientContext(ApplicationContext.ExecutionLocations executionLocation)
    {
      return _clientContext.Value;
    }
 
    public void SetClientContext(ContextDictionary clientContext, ApplicationContext.ExecutionLocations executionLocation)
    {
      _clientContext.Value = clientContext;
    }
 
    private readonly AsyncLocal<ApplicationContext> _applicationContext = new();
 
    public ApplicationContext ApplicationContext 
    {
      get
      {
        return _applicationContext.Value;
      }
      set
      {
        _applicationContext.Value = value;
        OnApplicationContextSet();
      }
    }
 
    protected virtual void OnApplicationContextSet()
    { }
  }
}