.NET 云原生架构师训练营(权限系统 代码实现 Identity)--学习笔记

目录

  • 开发任务
  • 代码实现

开发任务

  • DotNetNB.Security.Core:定义 core,models,Istore;实现 default memory store
  • DotNetNB.Security.Identity:将权限赋予角色或用户;在用户登录时将 Permissions 写入用户身份 claims

代码实现

添加一个 Identity 的扩展,将 role 和 Permission 结合到一起

定义 IRolePermissionManager 接口,提供一个 AddRolePermission 的方法

using DotNetNB.Security.Core.Models;

namespace DotNetNB.Security.Identity
{
    public interface IRolePermissionManager
    {
        public Task AddRolePermission(TRole role, Permission permission);
    }
}

新增 RolePermissionManager 继承 IRolePermissionManager,将 resource 的 key 存到 role 的 Claim 中

因为这样只在 role 里面记录了 key,不知道来自哪个 permission,所以还需要持久化 permission 和 role 的关系

using DotNetNB.Security.Core;
using DotNetNB.Security.Core.Models;
using Microsoft.AspNetCore.Identity;
using System.Security.Claims;

namespace DotNetNB.Security.Identity
{
    public class RolePermissionManager : IRolePermissionManager where TRole : class
    {
        private readonly RoleManager _roleManager;

        public RolePermissionManager(RoleManager roleManager)
        {
            _roleManager = roleManager;
        }

        public async Task AddRolePermission(TRole role, Permission permission)
        {
            foreach (var resource in permission.Resources)
            {
                await _roleManager.AddClaimAsync(role, new Claim(ClaimsTypes.Permission, resource.Key));
            }

            //TBD 持久化 permission 和 role 的关系
        }
    }
}

由于无法直接获取到 Permission,只能获取到 Permission 的 key,所以需要在 IPermissionManager 接口中添加一个 GetAsync 方法

public Task GetAsync(string key);

在 PermissionManager 中实现 GetAsync 方法

public async Task GetAsync(string key)
{
    return await _permissionStore.GetByKeyAsync(key);
}

这样在 RolePermissionManager 中就可以通过这个方法获取到 Permission

using DotNetNB.Security.Core;
using Microsoft.AspNetCore.Identity;
using System.Security.Claims;

namespace DotNetNB.Security.Identity
{
    public class RolePermissionManager : IRolePermissionManager where TRole : class
    {
        private readonly IPermissionManager _permissionManager;
        private readonly RoleManager _roleManager;

        public RolePermissionManager(IPermissionManager permissionManager, RoleManager roleManager)
        {
            _permissionManager = permissionManager;
            _roleManager = roleManager;
        }

        public async Task AddRolePermission(TRole role, string permissionKey)
        {
            var permission = await _permissionManager.GetAsync(permissionKey);
            if (permission == null)
            {
                throw new InvalidOperationException($"Permission not found:{permissionKey}");
            }
            foreach (var resource in permission.Resources)
            {
                await _roleManager.AddClaimAsync(role, new Claim(ClaimsTypes.Permission, resource.Key));
            }

            //TBD 持久化 permission 和 role 的关系
        }
    }
}

实际上用户可能也获取不到 TRole,需要通过 roleId 查询

public async Task AddRolePermission(string roleId, string permissionKey) 
{
    var role = await _roleManager.FindByIdAsync(roleId);
    if (role == null)
    {
        throw new InvalidOperationException($"Role not found:{roleId}");
    }

    var permission = await _permissionManager.GetAsync(permissionKey);
    if (permission == null)
    {
        throw new InvalidOperationException($"Permission not found:{permissionKey}");
    }
    foreach (var resource in permission.Resources)
    {
        await _roleManager.AddClaimAsync(role, new Claim(ClaimsTypes.Permission, resource.Key));
    }

    //TBD 持久化 permission 和 role 的关系
}

用户也是一样的做法,定义一个 IUserPermissionManager 接口,提供一个 AddUserPermission 方法

namespace DotNetNB.Security.Identity
{
    public interface IUserPermissionManager
    {
        public Task AddUserPermission(string userId, string permissionKey);
    }
}

新增 UserPermissionManager 继承 IUserPermissionManager,将 Permission 中所有 Resource 的 key 作为 User 的 Claim

using System.Security.Claims;
using DotNetNB.Security.Core;
using Microsoft.AspNetCore.Identity;

namespace DotNetNB.Security.Identity
{
    public class UserPermissionManager : IUserPermissionManager where TUser : class
    {
        private readonly UserManager _userManager;
        private readonly IPermissionManager _permissionManager;

        public UserPermissionManager(UserManager userManager, IPermissionManager permissionManager)
        {
            _userManager = userManager;
            _permissionManager = permissionManager;
        }

        public async Task AddUserPermission(string userId, string permissionKey)
        {
            var user = await _userManager.FindByIdAsync(userId);
            if (user == null)
            {
                throw new InvalidOperationException($"User not found:{userId}");
            }

            var permission = await _permissionManager.GetAsync(permissionKey);
            if (permission == null)
            {
                throw new InvalidOperationException($"Permission not found:{permissionKey}");
            }

            var claims = permission.Resources.Select(p => new Claim(ClaimsTypes.Permission, p.Key)).ToList();
            await _userManager.AddClaimsAsync(user, claims);
        }
    }
}

提供一个扩展方法将 RolePermissionManager 和 UserPermissionManager 添加到程序中

using Microsoft.AspNetCore.Identity;
using Microsoft.Extensions.DependencyInjection;

namespace DotNetNB.Security.Identity.Extensions
{
    public static class IdentityBuilderExtensions
    {
        public static IdentityBuilder WithPermissions(this IdentityBuilder identityBuilder)
            where TRole : class where TUser : class
        {
            identityBuilder.Services.AddScoped, RolePermissionManager>()
                .AddScoped, UserPermissionManager>();
            return identityBuilder;
        }
    }
}

GitHub源码链接:

https://github.com/MingsonZheng/dotnetnb.security

课程链接

https://appsqsyiqlk5791.h5.xiaoeknow.com/v1/course/video/v_5f39bdb8e4b01187873136cf?type=2

知识共享许可协议

本作品采用知识共享署名-非商业性使用-相同方式共享 4.0 国际许可协议进行许可。

欢迎转载、使用、重新发布,但务必保留文章署名 郑子铭 (包含链接: http://www.cnblogs.com/MingsonZheng/ ),不得用于商业目的,基于本文修改后的作品务必以相同的许可发布。

如有任何疑问,请与我联系 ([email protected]) 。

你可能感兴趣的:(.NET 云原生架构师训练营(权限系统 代码实现 Identity)--学习笔记)