Primary Keys mangled on generic DbSets models after second migration

[TsengSR]

The migration file (i.e. 20151024123838_Init.cs) gets mangled primary keys on second migration.

I am using AspNet Identity in my project and after the initial migration the 2nd (and following) migrations will mangle the primary keys, basically making it impossible to migrate further and having to wipe of the database after each change in the structure.

For example:

public class AuthUser : IdentityUser<Guid>
{
    public AuthUser() { }
    public AuthUser(string userName) : base(userName) { }

    public string FirstName { get; set; }
    public string LastName { get; set; }
}
public class AuthRole : IdentityRole<Guid>
{
    public AuthRole() { }
    public AuthRole(string roleName) : base(roleName) { }
}

public class AuthContext : IdentityDbContext<AuthUser, AuthRole, Guid>
{
}

After setting up the initial project, run a migration

dnx ef migrations add Init

The files genreated are generated correctly. Without further change, add a second migration

dnx ef migrations add Init2

The Init2 file (i.e.20151024123846_Init2.cs) has mangled primary keys:

First imgration (20151024123838_Init.cs):

public partial class Init : Migration
{
    protected override void Up(MigrationBuilder migrationBuilder)
    {
        migrationBuilder.CreateTable(
            name: "AspNetRoles",
            columns: table => new
            {
                Id = table.Column<Guid>(nullable: false),
                ConcurrencyStamp = table.Column<string>(nullable: true),
                Name = table.Column<string>(nullable: true),
                NormalizedName = table.Column<string>(nullable: true)
            },
            constraints: table =>
            {
                table.PrimaryKey("PK_AuthRole", x => x.Id);
            });
        migrationBuilder.CreateTable(
            name: "AspNetUsers",
            columns: table => new
            {
                Id = table.Column<Guid>(nullable: false),
                AccessFailedCount = table.Column<int>(nullable: false),
                ConcurrencyStamp = table.Column<string>(nullable: true),
                DisplayName = table.Column<string>(nullable: true),
                Domain = table.Column<string>(nullable: true),
                DomainUsername = table.Column<string>(nullable: true),
                Email = table.Column<string>(nullable: true),
                EmailConfirmed = table.Column<bool>(nullable: false),
                FirstName = table.Column<string>(nullable: true),
                IsDomainUser = table.Column<bool>(nullable: false),
                LastName = table.Column<string>(nullable: true),
                LockoutEnabled = table.Column<bool>(nullable: false),
                LockoutEnd = table.Column<DateTimeOffset>(nullable: true),
                NormalizedEmail = table.Column<string>(nullable: true),
                NormalizedUserName = table.Column<string>(nullable: true),
                PasswordHash = table.Column<string>(nullable: true),
                PhoneNumber = table.Column<string>(nullable: true),
                PhoneNumberConfirmed = table.Column<bool>(nullable: false),
                SecurityStamp = table.Column<string>(nullable: true),
                TwoFactorEnabled = table.Column<bool>(nullable: false),
                UserName = table.Column<string>(nullable: true)
            },
            constraints: table =>
            {
                table.PrimaryKey("PK_AuthUser", x => x.Id);
            });
        migrationBuilder.CreateTable(
            name: "Application",
            columns: table => new
            {
                ApplicationID = table.Column<string>(nullable: false),
                DisplayName = table.Column<string>(nullable: true),
                LogoutRedirectUri = table.Column<string>(nullable: true),
                RedirectUri = table.Column<string>(nullable: true),
                Secret = table.Column<string>(nullable: true),
                Type = table.Column<int>(nullable: false)
            },
            constraints: table =>
            {
                table.PrimaryKey("PK_Application", x => x.ApplicationID);
            });
        migrationBuilder.CreateTable(
            name: "AspNetRoleClaims",
            columns: table => new
            {
                Id = table.Column<int>(nullable: false)
                    .Annotation("SqlServer:ValueGenerationStrategy", SqlServerValueGenerationStrategy.IdentityColumn),
                ClaimType = table.Column<string>(nullable: true),
                ClaimValue = table.Column<string>(nullable: true),
                RoleId = table.Column<Guid>(nullable: false)
            },
            constraints: table =>
            {
                table.PrimaryKey("PK_IdentityRoleClaim<Guid>", x => x.Id);
                table.ForeignKey(
                    name: "FK_IdentityRoleClaim<Guid>_AuthRole_RoleId",
                    column: x => x.RoleId,
                    principalTable: "AspNetRoles",
                    principalColumn: "Id",
                    onDelete: ReferentialAction.Cascade);
            });
        migrationBuilder.CreateTable(
            name: "AspNetUserClaims",
            columns: table => new
            {
                Id = table.Column<int>(nullable: false)
                    .Annotation("SqlServer:ValueGenerationStrategy", SqlServerValueGenerationStrategy.IdentityColumn),
                ClaimType = table.Column<string>(nullable: true),
                ClaimValue = table.Column<string>(nullable: true),
                UserId = table.Column<Guid>(nullable: false)
            },
            constraints: table =>
            {
                table.PrimaryKey("PK_IdentityUserClaim<Guid>", x => x.Id);
                table.ForeignKey(
                    name: "FK_IdentityUserClaim<Guid>_AuthUser_UserId",
                    column: x => x.UserId,
                    principalTable: "AspNetUsers",
                    principalColumn: "Id",
                    onDelete: ReferentialAction.Cascade);
            });
        migrationBuilder.CreateTable(
            name: "AspNetUserLogins",
            columns: table => new
            {
                LoginProvider = table.Column<string>(nullable: false),
                ProviderKey = table.Column<string>(nullable: false),
                ProviderDisplayName = table.Column<string>(nullable: true),
                UserId = table.Column<Guid>(nullable: false)
            },
            constraints: table =>
            {
                table.PrimaryKey("PK_IdentityUserLogin<Guid>", x => new { x.LoginProvider, x.ProviderKey });
                table.ForeignKey(
                    name: "FK_IdentityUserLogin<Guid>_AuthUser_UserId",
                    column: x => x.UserId,
                    principalTable: "AspNetUsers",
                    principalColumn: "Id",
                    onDelete: ReferentialAction.Cascade);
            });
        migrationBuilder.CreateTable(
            name: "AspNetUserRoles",
            columns: table => new
            {
                UserId = table.Column<Guid>(nullable: false),
                RoleId = table.Column<Guid>(nullable: false)
            },
            constraints: table =>
            {
                table.PrimaryKey("PK_IdentityUserRole<Guid>", x => new { x.UserId, x.RoleId });
                table.ForeignKey(
                    name: "FK_IdentityUserRole<Guid>_AuthRole_RoleId",
                    column: x => x.RoleId,
                    principalTable: "AspNetRoles",
                    principalColumn: "Id",
                    onDelete: ReferentialAction.Cascade);
                table.ForeignKey(
                    name: "FK_IdentityUserRole<Guid>_AuthUser_UserId",
                    column: x => x.UserId,
                    principalTable: "AspNetUsers",
                    principalColumn: "Id",
                    onDelete: ReferentialAction.Cascade);
            });
        migrationBuilder.CreateIndex(
            name: "RoleNameIndex",
            table: "AspNetRoles",
            column: "NormalizedName");
        migrationBuilder.CreateIndex(
            name: "EmailIndex",
            table: "AspNetUsers",
            column: "NormalizedEmail");
        migrationBuilder.CreateIndex(
            name: "UserNameIndex",
            table: "AspNetUsers",
            column: "NormalizedUserName");
    }

    protected override void Down(MigrationBuilder migrationBuilder)
    {
        migrationBuilder.DropTable("AspNetRoleClaims");
        migrationBuilder.DropTable("AspNetUserClaims");
        migrationBuilder.DropTable("AspNetUserLogins");
        migrationBuilder.DropTable("AspNetUserRoles");
        migrationBuilder.DropTable("Application");
        migrationBuilder.DropTable("AspNetRoles");
        migrationBuilder.DropTable("AspNetUsers");
    }
}

Second, mangeld migration (20151024123846_Init2.cs):

public partial class Init2 : Migration
{
    protected override void Up(MigrationBuilder migrationBuilder)
    {
        migrationBuilder.DropForeignKey(name: "FK_Guid>_AuthRole_RoleId", table: "AspNetRoleClaims");
        migrationBuilder.DropForeignKey(name: "FK_Guid>_AuthUser_UserId", table: "AspNetUserClaims");
        migrationBuilder.DropForeignKey(name: "FK_Guid>_AuthUser_UserId", table: "AspNetUserLogins");
        migrationBuilder.DropForeignKey(name: "FK_Guid>_AuthRole_RoleId", table: "AspNetUserRoles");
        migrationBuilder.DropForeignKey(name: "FK_Guid>_AuthUser_UserId", table: "AspNetUserRoles");
        migrationBuilder.DropPrimaryKey(name: "PK_Guid>", table: "AspNetUserRoles");
        migrationBuilder.DropPrimaryKey(name: "PK_Guid>", table: "AspNetUserLogins");
        migrationBuilder.DropPrimaryKey(name: "PK_Guid>", table: "AspNetUserClaims");
        migrationBuilder.DropPrimaryKey(name: "PK_Guid>", table: "AspNetRoleClaims");
        migrationBuilder.AddPrimaryKey(
            name: "PK_IdentityUserRole<Guid>",
            table: "AspNetUserRoles",
            columns: new[] { "UserId", "RoleId" });
        migrationBuilder.AddPrimaryKey(
            name: "PK_IdentityUserLogin<Guid>",
            table: "AspNetUserLogins",
            columns: new[] { "LoginProvider", "ProviderKey" });
        migrationBuilder.AddPrimaryKey(
            name: "PK_IdentityUserClaim<Guid>",
            table: "AspNetUserClaims",
            column: "Id");
        migrationBuilder.AddPrimaryKey(
            name: "PK_IdentityRoleClaim<Guid>",
            table: "AspNetRoleClaims",
            column: "Id");
        migrationBuilder.AddForeignKey(
            name: "FK_IdentityRoleClaim<Guid>_AuthRole_RoleId",
            table: "AspNetRoleClaims",
            column: "RoleId",
            principalTable: "AspNetRoles",
            principalColumn: "Id",
            onDelete: ReferentialAction.Cascade);
        migrationBuilder.AddForeignKey(
            name: "FK_IdentityUserClaim<Guid>_AuthUser_UserId",
            table: "AspNetUserClaims",
            column: "UserId",
            principalTable: "AspNetUsers",
            principalColumn: "Id",
            onDelete: ReferentialAction.Cascade);
        migrationBuilder.AddForeignKey(
            name: "FK_IdentityUserLogin<Guid>_AuthUser_UserId",
            table: "AspNetUserLogins",
            column: "UserId",
            principalTable: "AspNetUsers",
            principalColumn: "Id",
            onDelete: ReferentialAction.Cascade);
        migrationBuilder.AddForeignKey(
            name: "FK_IdentityUserRole<Guid>_AuthRole_RoleId",
            table: "AspNetUserRoles",
            column: "RoleId",
            principalTable: "AspNetRoles",
            principalColumn: "Id",
            onDelete: ReferentialAction.Cascade);
        migrationBuilder.AddForeignKey(
            name: "FK_IdentityUserRole<Guid>_AuthUser_UserId",
            table: "AspNetUserRoles",
            column: "UserId",
            principalTable: "AspNetUsers",
            principalColumn: "Id",
            onDelete: ReferentialAction.Cascade);
    }

    protected override void Down(MigrationBuilder migrationBuilder)
    {
        migrationBuilder.DropForeignKey(name: "FK_IdentityRoleClaim<Guid>_AuthRole_RoleId", table: "AspNetRoleClaims");
        migrationBuilder.DropForeignKey(name: "FK_IdentityUserClaim<Guid>_AuthUser_UserId", table: "AspNetUserClaims");
        migrationBuilder.DropForeignKey(name: "FK_IdentityUserLogin<Guid>_AuthUser_UserId", table: "AspNetUserLogins");
        migrationBuilder.DropForeignKey(name: "FK_IdentityUserRole<Guid>_AuthRole_RoleId", table: "AspNetUserRoles");
        migrationBuilder.DropForeignKey(name: "FK_IdentityUserRole<Guid>_AuthUser_UserId", table: "AspNetUserRoles");
        migrationBuilder.DropPrimaryKey(name: "PK_IdentityUserRole<Guid>", table: "AspNetUserRoles");
        migrationBuilder.DropPrimaryKey(name: "PK_IdentityUserLogin<Guid>", table: "AspNetUserLogins");
        migrationBuilder.DropPrimaryKey(name: "PK_IdentityUserClaim<Guid>", table: "AspNetUserClaims");
        migrationBuilder.DropPrimaryKey(name: "PK_IdentityRoleClaim<Guid>", table: "AspNetRoleClaims");
        migrationBuilder.AddPrimaryKey(
            name: "PK_Guid>",
            table: "AspNetUserRoles",
            columns: new[] { "UserId", "RoleId" });
        migrationBuilder.AddPrimaryKey(
            name: "PK_Guid>",
            table: "AspNetUserLogins",
            columns: new[] { "LoginProvider", "ProviderKey" });
        migrationBuilder.AddPrimaryKey(
            name: "PK_Guid>",
            table: "AspNetUserClaims",
            column: "Id");
        migrationBuilder.AddPrimaryKey(
            name: "PK_Guid>",
            table: "AspNetRoleClaims",
            column: "Id");
        migrationBuilder.AddForeignKey(
            name: "FK_Guid>_AuthRole_RoleId",
            table: "AspNetRoleClaims",
            column: "RoleId",
            principalTable: "AspNetRoles",
            principalColumn: "Id",
            onDelete: ReferentialAction.Restrict);
        migrationBuilder.AddForeignKey(
            name: "FK_Guid>_AuthUser_UserId",
            table: "AspNetUserClaims",
            column: "UserId",
            principalTable: "AspNetUsers",
            principalColumn: "Id",
            onDelete: ReferentialAction.Restrict);
        migrationBuilder.AddForeignKey(
            name: "FK_Guid>_AuthUser_UserId",
            table: "AspNetUserLogins",
            column: "UserId",
            principalTable: "AspNetUsers",
            principalColumn: "Id",
            onDelete: ReferentialAction.Restrict);
        migrationBuilder.AddForeignKey(
            name: "FK_Guid>_AuthRole_RoleId",
            table: "AspNetUserRoles",
            column: "RoleId",
            principalTable: "AspNetRoles",
            principalColumn: "Id",
            onDelete: ReferentialAction.Restrict);
        migrationBuilder.AddForeignKey(
            name: "FK_Guid>_AuthUser_UserId",
            table: "AspNetUserRoles",
            column: "UserId",
            principalTable: "AspNetUsers",
            principalColumn: "Id",
            onDelete: ReferentialAction.Restrict);
    }
}

The dnx ef database update will now of course fail.

As you can see "FK_IdentityRoleClaim_AuthRole_RoleId" got mangled into "FK_Guid>_AuthRole_RoleId" and the "IdentityRoleClaim<" was removed.

It's a big game breaker, as migrations stop working when generic models are used.

[bricelam]

Hmm.. I am not able to reproduce this on the nightly builds. @TsengSR, would you mind trying again to see if it's fixed?

[TsengSR]

Yes, it's still there.

Using EntityFramework.MicrosoftSqlServer 7.0.0-rc2-16332 and EntityFramework.Commands 7.0.0-rc2-16332 and Microsoft.AspNet.Identity.EntityFramework 3.0.0-rc2-16069.

It happens only on Models containing generics, even if nothing on the model has been changed. Just calling "dnx ef migrations add Init" twice on a fresh migration and the above models.

I did a few further tests and the issue doesn't appear when using the Standard Identity models (which use string as TKey). In my case above I use Guid.

I used this models in my project

public class AuthUser : IdentityUser<Guid>
{
    public AuthUser() { }
    public AuthUser(string userName) : base(userName) { }

    public string DisplayName { get; set; }
    public string FirstName { get; set; }
    public string LastName { get; set; }
    public string Domain { get; set; }
    public string DomainUsername { get; set; }
    public bool IsDomainUser { get; set; }
}
public class AuthRole : IdentityRole<Guid>
{
    public AuthRole() { }
    public AuthRole(string roleName) : base(roleName) { }
}

public class AuthContext : IdentityDbContext<AuthUser, AuthRole, Guid>
{
    protected override void OnModelCreating(ModelBuilder builder)
    {
        base.OnModelCreating(builder);

        var user = builder.Entity<AuthUser>();
        user.Property(a => a.Domain).HasMaxLength(75);
        //user.Property(a => a.Email).HasMaxLength(150).Required();
    }
}

And in the Startup.cs the following configurations for Identity & EntityFramework:

        // Add EF services to the services container.
        services.AddEntityFramework()
            .AddSqlServer()
            .AddDbContext<AuthContext>(options =>
            {
                options.UseSqlServer(Configuration["Data:DefaultConnection:ConnectionString"]);
            });

        services.AddIdentity<AuthUser, AuthRole>(
            options =>
            {
                options.User = new Microsoft.AspNet.Identity.UserOptions
                {
                    RequireUniqueEmail = true
                };
            })
            .AddEntityFrameworkStores<AuthContext, Guid>()
            .AddDefaultTokenProviders();

Removing the Guid everywhere and using .AddEntityFrameworkStores<AuthContext, Guid>() and it will create the migration files correctly.

[bricelam]

Thanks, I'll keep digging. I took ASP.NET Identity out of the picture when attempting to repro, but I'll throw it into the mix to see if it changes anything.

[bricelam]

It looks like the issue is actually generic foreign keys closed over non-built-in types. The following model reproduces the issue. I'll start working on a fix.

class AuthUser
{
    public Guid Id { get; set; }

    [ForeignKey("UserId")]
    public ICollection<IdentityUserRole<Guid>> Roles { get; }
}

class IdentityUserRole<TKey>
{
    public int Id { get; set; }

    public TKey UserId { get; set; }
}

class AuthContext : DbContext
{
    public DbSet<AuthUser> Users { get; set; }
}