Sql server 让IdentityManager在两个不同的数据库上进行更改
我们有两个数据库,其中包含用户表,如下所示:Sql server 让IdentityManager在两个不同的数据库上进行更改,sql-server,entity-framework,asp.net-identity,asp.net-identity-2,identityserver3,Sql Server,Entity Framework,Asp.net Identity,Asp.net Identity 2,Identityserver3,我们有两个数据库,其中包含用户表,如下所示: MasterDB.AspNetUsers Customer1DB.AspNetUsers 我们使用MasterDb登录用户,然后将他们连接到客户数据库,例如Customer1DB(或其他客户数据库,具体取决于用户)。基于ASP.NET Identity Framework,两个用户表具有相同的模式,我们可以使用它们来管理MasterDb上的用户 现在我想要的是对MasterDb用户记录执行的任何更改,将其镜像到客户数据库(具有相同的用户Id)上的
- MasterDB.AspNetUsers
- Customer1DB.AspNetUsers
UserStore
、RoleStore
、UserManager
、rolemager
上的所有操作?我有一个函数,可以获取用户ID,并将其从第一个db添加或更新到第二个db,但我不确定应该如何将其集成到Identity Framework实现中
谢谢 我想你有两个选择:
class MultiDatabaseUserStore<T> : IUserStore<T>
where T : IdentityUser
{
private readonly UserStore<T>[] stores;
public MultiDatabaseUserStore(params IdentityDbContext[] dbContexts)
{
if (dbContexts == null || dbContexts.Length <= 0)
{
throw new ArgumentException("At least one db context is required.", "dbContexts");
}
this.stores = dbContexts.Select(x => new UserStore<T>(x)).ToArray();
}
public void Dispose()
{
foreach (var store in this.stores)
{
store.Dispose();
}
}
public Task CreateAsync(T user)
{
return this.ExecuteOnAll(x => x.CreateAsync(user));
}
public Task UpdateAsync(T user)
{
return this.ExecuteOnAll(x => x.UpdateAsync(user));
}
public Task DeleteAsync(T user)
{
return this.ExecuteOnAll(x => x.DeleteAsync(user));
}
public Task<T> FindByIdAsync(string userId)
{
return this.stores.First().FindByIdAsync(userId);
}
public Task<T> FindByNameAsync(string userName)
{
return this.stores.First().FindByNameAsync(userName);
}
private Task ExecuteOnAll(Func<UserStore<T>, Task> function)
{
return Task.WhenAll(this.stores.Select(function));
}
}
而getChangeStoreReplicate()
变成:
private IEnumerable<Action<IdentityDbContext>> GetChangesToReplicate()
{
if (!this.IsReplicatingChanges) // Flag
{
// Return null when not activated
return null;
}
var actions = new List<Action<IdentityDbContext>>();
var changedEntries = this.ChangeTracker.Entries().Where(x => x.State != EntityState.Unchanged);
foreach (var u in changedEntries)
{
var entity = u.Entity;
var state = u.State;
actions.Add(db =>
{
db.Set(entity.GetType()).Attach(entity);
db.Entry(entity).State = state;
});
}
return actions;
}
private IEnumerable GetChangeStoreReplicate()
{
如果(!this.isreplicationchanges)//标志
{
//未激活时返回null
返回null;
}
var actions=新列表();
var changedEntries=this.ChangeTracker.Entries()。其中(x=>x.State!=EntityState.Unchanged);
foreach(换币厂的var u)
{
var实体=美国实体;
var状态=美国状态;
actions.Add(db=>
{
db.Set(entity.GetType()).Attach(entity);
db.Entry(entity).State=状态;
});
}
返回动作;
}
别忘了将空检查添加到
SaveReplicatedChanges()
…奖金将授予Chris的答案:)感谢您的详细回答,特别是包括代码。我想我会选择选项2。谢谢:)再考虑一下,我发现了一个改进的#2,它适用于所有场景。顺便说一句,对于获得更改的用户条目,您可以使用ChangeTracker.entries()
而不是Where
子句。是的,这比Where更好。。。但是我添加了改进的#2,它不再检查类型。
class MasterDb : IdentityDbContext
{
public MasterDb()
{
}
public override int SaveChanges()
{
var changes = this.GetChangesToReplicate();
var i = base.SaveChanges();
this.SaveReplicatedChanges(changes);
return i;
}
public override Task<int> SaveChangesAsync()
{
return Task.Run(async () =>
{
var changes = this.GetChangesToReplicate();
var i = await base.SaveChangesAsync();
this.SaveReplicatedChanges(changes);
return i;
});
}
private void SaveReplicatedChanges(IEnumerable<Action<IdentityDbContext>> changes)
{
if (changes != null)
{
using (var db = new Customer1DB())
{
foreach (var change in changes)
{
change(db);
}
db.SaveChanges();
}
}
}
private IEnumerable<Action<IdentityDbContext>> GetChangesToReplicate()
{
var actions = new List<Action<IdentityDbContext>>();
var userTye = typeof(IdentityUser);
var changedEntries = this.ChangeTracker.Entries();
var users = changedEntries.Where(x => x.Entity.GetType() == userTye).ToList();
foreach (var u in users)
{
switch (u.State)
{
case EntityState.Added:
var userToAdd = (IdentityUser)u.Entity;
actions.Add(db => db.Users.Add(userToAdd));
break;
case EntityState.Modified:
var userToUpdate = (IdentityUser)u.Entity; ;
actions.Add(db =>
{
db.Users.Attach(userToUpdate);
db.Entry(userToUpdate).State = EntityState.Modified;
});
break;
case EntityState.Deleted:
var userToDelete = (IdentityUser)u.Entity; ;
actions.Add(db =>
{
db.Users.Attach(userToDelete);
db.Entry(userToDelete).State = EntityState.Deleted;
});
break;
}
}
return actions;
}
}
var dbContext = new MasterDb { IsReplicatingChanges = true };
var userManager = new UserManager<IdentityUser>(new UserStore<IdentityUser>(dbContext));
var roleManager = new RoleManager<IdentityRole>(new RoleStore<IdentityRole>(dbContext));
private IEnumerable<Action<IdentityDbContext>> GetChangesToReplicate()
{
if (!this.IsReplicatingChanges) // Flag
{
// Return null when not activated
return null;
}
var actions = new List<Action<IdentityDbContext>>();
var changedEntries = this.ChangeTracker.Entries().Where(x => x.State != EntityState.Unchanged);
foreach (var u in changedEntries)
{
var entity = u.Entity;
var state = u.State;
actions.Add(db =>
{
db.Set(entity.GetType()).Attach(entity);
db.Entry(entity).State = state;
});
}
return actions;
}