Abp.vNext 权限备注

Abp 内部是基于 asp.net core 基于 策略的  授权方式，每个权限为一个策略 

权限分为：

1、定义权限（先定义权限组，后添加权限）,每个模块都应该创建一个PermissionDefinitionProvider的派生类。

  public class TestPermissionDefinitionProvider : PermissionDefinitionProvider
    {
        public override void Define(IPermissionDefinitionContext context)
        {
           //AddGroup([NotNull] string name, ILocalizableString displayName = null);
            var testGroup = context.AddGroup("TestGroup");
           //public virtual PermissionDefinition AddPermission(string name, ILocalizableString displayName = null)
            testGroup.AddPermission("TestPermission1");

        }
    }

2、定义权限值来源(系统默认提供三类：Client，Role，User，分别用于基于客户端、基于角色、基于用户授权) ，只要实现IPermissionValueProvider 接口即可

 public class RolePermissionValueProvider : PermissionValueProvider
    {
        public const string ProviderName = "Role";

        public override string Name => ProviderName;

        public RolePermissionValueProvider(IPermissionStore permissionStore)
            : base(permissionStore)
        {

        }

        public override async Task<PermissionGrantResult> CheckAsync(PermissionValueCheckContext context)
        {
            var roles = context.Principal?.FindAll(AbpClaimTypes.Role).Select(c => c.Value).ToArray();
            if (roles == null || !roles.Any())
            {
                return PermissionGrantResult.Undefined;
            }

            foreach (var role in roles)
            {
                if (await PermissionStore.IsGrantedAsync(context.Permission.Name, Name, role))
                {
                    return PermissionGrantResult.Granted;
                }
            }

            return PermissionGrantResult.Undefined;
        }
    }

然后添加到权限选项中

  public override void ConfigureServices(ServiceConfigurationContext context)
        {
            context.Services.AddAuthorization();

            context.Services.AddSingleton<IAuthorizationHandler, PermissionRequirementHandler>();

            Configure<PermissionOptions>(options =>
            {
                options.ValueProviders.Add<UserPermissionValueProvider>();
                options.ValueProviders.Add<RolePermissionValueProvider>();
                options.ValueProviders.Add<ClientPermissionValueProvider>();
            });
        }

3、默认实现中，权限授权信息保存在  IPermissionStore 中 ，必须实现这个接口提供正确的授权信息。如

 public class FakePermissionStore : IPermissionStore, ITransientDependency
    {
        public Task<bool> IsGrantedAsync(string name, string providerName, string providerKey)
        {
            var result = name == "TestPermission1" &&
                         providerName == UserPermissionValueProvider.ProviderName &&
                         providerKey == AuthTestController.FakeUserId.ToString();

            return Task.FromResult(result);
        }
    }

4、在需要授权的地方加上授权标记就可以了 。