Nrthugu

I am in dire need of your help. I have migrated some legacy .Net web API applications to .net core and get it all working except the Envers piece of it. The major problem I am facing is to pass user name to the RevisionListener. As RevisionListener does not support DI I am not able to inject HttpContextAccessor to get the context. Alternatively if I use static HttpContextAccessor I am running with same context from two different request.

Even if I use "IHttpContextAccessor " due t static nature of the class Revision table is holding the same context between two requests from 2 different users.

Any example will be appreciated!

Here is the code I am using to configure nHibernate

// NHibernateExtension method to onboard nhiberbate to .net core
public static class NHibernateExtension

{

    public static void AddNhibernate(this IServiceCollection services, string connectionString,string schemaName )



    {







        services.AddSingleton((provider) =>



        {



            var cfg = new NHibernate.Cfg.Configuration();



            cfg.Configure("hibernate.cfg.xml");



            cfg.SetProperty("connection.connection_string", connectionString);



            cfg.AddProperties(new Dictionary<string, string>



            {



                { NHibernate.Cfg.Environment.DefaultSchema, schemaName }



            });



            cfg.AddMapping(NHibernateConfig.GetMappings());







            var enversConfiguration = GetEnversConfiguration();



            cfg.SetEnversProperty(ConfigurationKey.DefaultSchema, "Audit");



            cfg.IntegrateWithEnvers(enversConfiguration);











            return cfg;



        });







        services.AddSingleton((provider) => provider.GetService<NHibernate.Cfg.Configuration>().BuildSessionFactory());







        services.AddScoped((provider) => provider.GetService<ISessionFactory>().OpenSession());



    }











    private static FluentConfiguration GetEnversConfiguration()



    {



        var enversConf = new FluentConfiguration();







       var userId = HttpContext.Current?.Request?.Headers["user_name"];



        var userName = HttpContext.Current?.Request?.Headers["name"];







        RevisionListener rn = new RevisionListener(userName, userId);



        enversConf.SetRevisionEntity<RevisionDetails>(x => x.Id, x => x.RevisionTimestamp, rn);



        enversConf.Audit<PrinterMapping>().SetTableInfo(x => x.Value = typeof(PrinterMapping).Name);



        enversConf.Audit<Label>().SetTableInfo(x => x.Value = typeof(Label).Name);



        enversConf.Audit<Language>().SetTableInfo(x => x.Value = typeof(Language).Name);



        enversConf.Audit<Translation>().SetTableInfo(x => x.Value = typeof(Translation).Name);



        return enversConf;



    }







}

//this provides HttpContext through IHttpContextAccessor

public static class HttpContext

{



    private static IHttpContextAccessor _contextAccessor;







    public static Microsoft.AspNetCore.Http.HttpContext Current => _contextAccessor.HttpContext;







    internal static void Configure(IHttpContextAccessor contextAccessor)



    {



        _contextAccessor = contextAccessor;



    }



}

*/Listener****/

public class RevisionListener : IRevisionListener {

private string _userName = string.Empty;

private string _userId = string.Empty;



public RevisionListener(string userName, string userId)

    : base()

{

    this._userName = userName;

    this._userId = userId;

}



public void NewRevision(object revisionEntity)

{

    var casted = revisionEntity as RevisionDetails;



    if (casted != null)

    {

        casted.UserName = this._userName;

        casted.UserId = this._userId;

    }

}

}