644 lines
24 KiB
Markdown
644 lines
24 KiB
Markdown
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# Permission Module
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> 本模組提供 Gateway 多租戶 **B2B 自定義 RBAC**：平台級 Permission Catalog + 租戶級 Role / RolePermission / UserRole / RoleMapping，搭配 Casbin enforcer 進行 HTTP path/method 授權。設計參考 `docs/identity-member-design.md` §6 / §7.3 / §13。
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---
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## 0. TL;DR
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```mermaid
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flowchart LR
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subgraph Platform["平台層 (Platform-wide)"]
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Catalog[Permission Catalog]
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end
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subgraph Tenant["租戶層 (per-tenant)"]
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Role[Role]
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RP[RolePermission]
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UR[UserRole]
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RM[RoleMapping]
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end
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Catalog -- 勾選 --> RP --> Role
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Role -- 指派 --> UR
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Role -- 對應 --> RM
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Tenant -- LoadPolicy --> Casbin[(Casbin Enforcer<br/>Redis adapter)]
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Casbin -- Check --> Middleware[CasbinRBAC Middleware]
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```
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- Permission **平台 seed 全局**（`cmd/permission-seed`），租戶不可新增；只能勾選。
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- Role / RolePermission / UserRole **租戶獨立**；同名 role 可在不同租戶共存。
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- Role.Key 一旦建立 **不可改**；外部 IdP（ZITADEL / LDAP / SCIM）以 Key 作對應。
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- 多 pod 同步：**Redis Pub/Sub 即時通知 + 5min cron 兜底**。
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---
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## 1. 核心概念
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| 概念 | 簡述 | 關鍵欄位 |
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|------|------|----------|
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| **Permission** | 平台級權限節點（樹狀，dot notation） | `name` 唯一、`http_methods` + `http_path` 命中 Casbin policy |
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| **Role** | 租戶內的角色 | `tenant_id + key` unique；`is_system=true` 不可刪 |
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| **RolePermission** | Role 勾選了哪些 Permission | 自動補齊 parent permission ID |
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| **UserRole** | 使用者被指派的角色（多角色） | `source` 區分 manual / zitadel / ldap / scim |
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| **RoleMapping** | 外部 group/role → 內部 Role.Key | SyncFromX 用來翻譯 IdP claims |
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| **Casbin Policy** | 物化後的授權規則（Redis Set） | `(tenant, role, path, methods, name)` |
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### 1.1 Permission Tree 範例
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```
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member.info.management ← 分類（無 HTTP）
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├── member.basic.info ← 二級分類
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│ ├── member.info.select GET /api/v1/members/me
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│ └── member.info.update PATCH /api/v1/members/me
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├── member.admin.list GET /api/v1/members
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└── member.admin.read GET /api/v1/members/:uid
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permission.role.management ← 分類
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├── permission.role.read GET /api/v1/permissions/roles
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├── permission.role.write POST/PUT/DELETE /api/v1/permissions/roles*
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└── permission.assign.write POST/DELETE /api/v1/permissions/users/*/roles*
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```
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> 分類節點（無 `http_path`）**不會**寫入 Casbin policy；它們只是 UI 樹狀渲染與 parent closure 用。
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---
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## 2. 目錄結構
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```
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internal/model/permission/
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├── README.md # 本文件
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├── config/
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│ └── config.go # CasbinConfig / CacheConfig / ReloadConfig
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├── domain/
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│ ├── const.go # BSON 欄位 / Casbin / Role.Key 規則
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│ ├── errors.go # 模組共用 sentinel errors
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│ ├── redis.go # Redis key helpers (casbin / user_roles / role_perms)
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│ ├── entity/
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│ │ ├── permission.go # Permission catalog node
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│ │ ├── role.go
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│ │ ├── role_permission.go
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│ │ ├── user_role.go
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│ │ └── role_mapping.go
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│ ├── enum/
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│ │ ├── status.go # open / close + Permissions map
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│ │ ├── permission_type.go # backend_user / frontend_user
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│ │ └── role_source.go # manual / zitadel / ldap / scim
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│ ├── repository/ # 介面（+ Casbin adapter port）
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│ │ ├── permission.go
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│ │ ├── role.go
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│ │ ├── role_permission.go
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│ │ ├── user_role.go
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│ │ ├── role_mapping.go
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│ │ └── casbin_adapter.go
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│ └── usecase/ # 介面 + DTO
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│ ├── permission.go
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│ ├── role.go
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│ ├── role_permission.go
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│ ├── user_role.go
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│ ├── role_mapping.go
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│ ├── rbac.go
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│ └── authorization_query.go
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├── repository/ # Mongo + Redis 實作
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│ ├── index.go # EnsureMongoIndexes + bsonOpSet
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│ ├── permission_mongo.go
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│ ├── role_mongo.go
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│ ├── role_permission_mongo.go
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│ ├── user_role_mongo.go
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│ ├── role_mapping_mongo.go
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│ └── casbin_redis.go # tenant-scoped policy Redis Set
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├── usecase/ # atomic primitives (7)
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│ ├── module.go # NewModuleFromParam
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│ ├── errors.go # wrapRepoErr → errs.For(code.Permission)
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│ ├── permission_tree.go # buildTree / filterOpenNodes / parent closure
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│ ├── permission_usecase.go
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│ ├── role_usecase.go
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│ ├── role_permission_usecase.go
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│ ├── user_role_usecase.go
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│ ├── role_mapping_usecase.go
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│ ├── authorization_query_usecase.go
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│ └── rbac_usecase.go # Casbin enforcer + LoadPolicy + Pub/Sub reload
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└── seed/
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├── catalog.go # embed + Apply + DefaultSystemRoles
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└── catalog.json # 平台 seed 資料
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```
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---
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## 3. 模組依賴
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```mermaid
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flowchart TD
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Logic[logic/permission] --> SVC[svc.ServiceContext]
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SVC --> AuthQ[AuthorizationQueryUseCase]
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SVC --> Perm[PermissionUseCase]
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SVC --> Role[RoleUseCase]
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SVC --> RolePerm[RolePermissionUseCase]
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SVC --> UserRole[UserRoleUseCase]
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SVC --> Mapping[RoleMappingUseCase]
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SVC --> RBAC[RBACUseCase]
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AuthQ --> RoleR[(roles)]
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AuthQ --> PermR[(permissions)]
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AuthQ --> RPR[(role_permissions)]
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AuthQ --> URR[(user_roles)]
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Perm --> PermR
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Role --> RoleR
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Role --> URR
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RolePerm --> RPR
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RolePerm --> RoleR
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RolePerm --> PermR
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UserRole --> URR
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UserRole --> RoleR
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Mapping --> RMR[(role_mappings)]
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Mapping --> RoleR
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RBAC --> RoleR
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RBAC --> PermR
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RBAC --> RPR
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RBAC --> URR
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RBAC --> Adapter[Casbin Redis Adapter]
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Adapter --> Redis[(Redis)]
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RBAC --> Pub[Redis Pub/Sub]
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```
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---
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## 4. UseCase 介面（7 個）
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| UseCase | 主要方法 | 注入 |
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|---------|----------|------|
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| `PermissionUseCase` | `GetCatalogTree` / `List` / `UpsertCatalog` / `UpdateStatus` | PermissionRepository |
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| `RoleUseCase` | `Create` / `Get` / `List` / `Update` / `Delete` | Role + RolePermission + UserRole |
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| `RolePermissionUseCase` | `List` / `Replace` | Role + Permission + RolePermission + Reloader |
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| `UserRoleUseCase` | `Assign` / `Revoke` / `List` / `ReplaceForSource` | Role + UserRole + Reloader |
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| `RoleMappingUseCase` | `Upsert` / `Delete` / `GetByExternal` / `List` | Role + RoleMapping |
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| `AuthorizationQueryUseCase` | `Me` | Role + Permission + RolePermission + UserRole |
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| `RBACUseCase` | `Check` / `LoadPolicy` / `LoadAllPolicies` / `BroadcastReload` / `Start/StopReloadSubscriber` | All repos + Redis |
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---
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## 5. 資料儲存
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### 5.1 MongoDB
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| Collection | 索引 | 用途 |
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|------------|------|------|
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| `permissions` | `name`(uniq) / `parent` / `status` / `type` | 平台 Permission Catalog（樹狀） |
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| `roles` | `(tenant_id, key)`(uniq) / `(tenant_id, is_system)` | 租戶角色 |
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| `role_permissions` | `(tenant_id, role_id, permission_id)`(uniq) / `(tenant_id, permission_id)` | Role↔Permission 多對多 |
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| `user_roles` | `(tenant_id, uid, role_id)`(uniq) / `(tenant_id, role_id)` / `(tenant_id, uid, source)` | User↔Role 多對多 |
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| `role_mappings` | `(tenant_id, external_source, external_key)`(uniq) / `(tenant_id, internal_role_id)` | 外部 group → 內部 Role |
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啟動時呼叫 `permrepo.EnsureMongoIndexes(ctx, &c.Mongo)`（已掛在 `cmd/mongo-index`）。
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### 5.2 Redis Key
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| Key | 內容 | TTL | 由誰寫 |
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|-----|------|-----|--------|
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| `permission:casbin:rules:{tenant_id}` | Set of JSON-encoded `[]string` rules | 永久 | `RBACUseCase.LoadPolicy` / `BroadcastReload` |
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| `perm:user_roles:{tenant_id}:{uid}` | List of role keys（讀取快取，預留） | `Cache.UserRolesTTLSeconds` | 預留 |
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| `perm:role_perms:{tenant_id}:{role_id}` | List of permission names（預留） | `Cache.RolePermsTTLSeconds` | 預留 |
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| `permission:tree:open` | 序列化的全局 open tree（預留） | `Cache.CatalogTTLSeconds` | 預留 |
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| (channel) `casbin:reload` | Pub/Sub payload `{tenant_id, ts}` | — | `RBACUseCase.BroadcastReload` |
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> Redis Set + JSON 編碼是為了讓 SaveAll 用 pipelined `DEL + SADD` 一致性更新；Pub/Sub 走獨立 go-redis client（go-zero 沒有 Subscribe），詳見 `internal/library/redis/pubsub.go`。
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---
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## 6. 核心流程時序圖
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### 6.1 NewModuleFromParam — 模組組裝
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```mermaid
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sequenceDiagram
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participant Boot as svc.NewServiceContext
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participant Mod as permission.NewModuleFromParam
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participant Cfg as config.Defaults()
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participant Repo as Mongo Repos (5)
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participant Casbin as RBACUseCase
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participant Redis as PolicyAdapter
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Boot->>Mod: FactoryParam{MongoConf, Redis, Config}
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Mod->>Cfg: cfg = Config.Defaults()
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Mod->>Repo: NewPermission/Role/.../RoleMapping Repository
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Note over Mod: 若已注入 repo（測試）跳過
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alt cfg.Casbin.Enabled && Redis 有
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Mod->>Casbin: NewRBACUseCase(repos+Redis)
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Casbin-->>Mod: rbacUC
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Mod->>Redis: RedisAdapterFactory = NewCasbinRedisAdapter
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Mod->>Mod: reloader = rbacUC.BroadcastReload
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else 無 Redis 或 Disabled
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Mod->>Mod: rbacUC = nil（Check 永遠 deny）
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end
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Mod->>Mod: New {Permission, Role, RolePermission, UserRole, RoleMapping, AuthorizationQuery}
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Mod-->>Boot: *Module（7 usecases + 5 repos）
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```
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### 6.2 Permission Catalog Seed
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```mermaid
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sequenceDiagram
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participant CLI as cmd/permission-seed
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participant Cfg as config.Mongo
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participant Idx as permrepo.EnsureMongoIndexes
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participant Seed as seed.Apply
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participant Cat as Permissions
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participant Roles as Roles + RolePermissions
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CLI->>Cfg: load -f etc/gateway.dev.yaml
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CLI->>Idx: 建立 5 collections 索引
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CLI->>Seed: Apply(perms, roles, rolePerms, opts)
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alt SkipCatalog == false
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Seed->>Cat: 第一輪 UpsertByName（不含 parent）
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Seed->>Cat: GetAll → 建 name→ID index
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Seed->>Cat: 第二輪 UpsertByName（補 parent ID）
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end
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loop opts.TenantIDs
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Seed->>Roles: GetByKey or Insert is_system role
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Seed->>Roles: SetForRole(roleID, [permIDs]) ← 全量取代
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end
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Seed-->>CLI: Report{ catalog, roles, role_perms }
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CLI-->>CLI: stdout summary
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```
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> 預設 5 個 system role：`tenant_owner` / `tenant_admin` / `member_manager` / `member` / `viewer`，定義於 `seed/catalog.go::DefaultSystemRoles`。
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### 6.3 Role 建立 / 更新 / 刪除
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```mermaid
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sequenceDiagram
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participant API as POST/PATCH/DELETE /permissions/roles
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participant Logic as logic.permission.*
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participant UC as RoleUseCase
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participant Repo as RoleRepository
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participant URR as UserRoleRepository
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API->>Logic: req + actor (tenant_id, uid)
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Logic->>UC: Create / Update / Delete
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alt Create
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UC->>UC: validateRoleKey（^[a-z][a-z0-9._-]+$、不可 system./platform_）
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UC->>Repo: Insert(role) ← unique (tenant_id, key)
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else Update
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UC->>Repo: GetByID
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UC->>UC: 阻擋 is_system 改 status
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UC->>Repo: FindOneAndUpdate
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else Delete
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UC->>Repo: GetByID
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UC->>UC: 阻擋 is_system
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UC->>URR: ListByRole（仍有指派 → 拒絕）
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UC->>Repo: DeleteByRole(role_perms)
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UC->>Repo: Delete(role)
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end
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UC-->>Logic: role
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Logic-->>API: types.RoleData
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
### 6.4 RolePermission 全量取代（PUT /roles/:id/permissions）
|
|||
|
|
|
|||
|
|
```mermaid
|
|||
|
|
sequenceDiagram
|
|||
|
|
participant API as PUT /permissions/roles/:id/permissions
|
|||
|
|
participant Logic as logic.replaceRolePermissions
|
|||
|
|
participant UC as RolePermissionUseCase
|
|||
|
|
participant Roles as RoleRepository
|
|||
|
|
participant Perms as PermissionRepository
|
|||
|
|
participant RP as RolePermissionRepository
|
|||
|
|
participant RBAC as RBACUseCase
|
|||
|
|
|
|||
|
|
API->>Logic: req{ID, PermissionIDs}
|
|||
|
|
Logic->>UC: Replace(tenantID, roleID, ids)
|
|||
|
|
UC->>Roles: GetByID（驗證 tenant 一致）
|
|||
|
|
UC->>Perms: GetAll（拿到 catalog 全表）
|
|||
|
|
UC->>UC: 檢查 ids ⊆ catalog
|
|||
|
|
UC->>UC: getFullParentPermissionIDs(ids, all)
|
|||
|
|
UC->>RP: SetForRole(tenantID, roleID, closure)
|
|||
|
|
Note over RP: DeleteMany + InsertMany 原子化
|
|||
|
|
UC->>RBAC: BroadcastReload(tenantID)
|
|||
|
|
RBAC-->>UC: ok（fire-and-forget）
|
|||
|
|
UC-->>Logic: nil
|
|||
|
|
Logic-->>API: 200 OK
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
### 6.5 UserRole 指派 / 撤銷
|
|||
|
|
|
|||
|
|
```mermaid
|
|||
|
|
sequenceDiagram
|
|||
|
|
participant API as POST /permissions/users/:uid/roles
|
|||
|
|
participant UC as UserRoleUseCase
|
|||
|
|
participant Roles as RoleRepository
|
|||
|
|
participant URR as UserRoleRepository
|
|||
|
|
participant RBAC as RBACUseCase
|
|||
|
|
|
|||
|
|
API->>UC: Assign{tenant, uid, role_id, source=manual}
|
|||
|
|
UC->>Roles: GetByID (tenant scope check)
|
|||
|
|
UC->>URR: Insert(unique tenant+uid+role)
|
|||
|
|
UC->>RBAC: BroadcastReload(tenant)
|
|||
|
|
UC-->>API: UserRole
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
### 6.6 SyncFromX 流程（外部 IdP 來源同步）
|
|||
|
|
|
|||
|
|
```mermaid
|
|||
|
|
sequenceDiagram
|
|||
|
|
participant Sync as auth/provisioning
|
|||
|
|
participant UC as UserRoleUseCase
|
|||
|
|
participant Map as RoleMappingUseCase
|
|||
|
|
participant Roles as RoleRepository
|
|||
|
|
participant URR as UserRoleRepository
|
|||
|
|
participant RBAC as RBACUseCase
|
|||
|
|
|
|||
|
|
Sync->>Map: GetByExternal(tenant, source=zitadel, externalKey)
|
|||
|
|
Map-->>Sync: RoleMapping(internal_role_key)
|
|||
|
|
Note over Sync: 收齊 IdP 端所有 roles → keys
|
|||
|
|
Sync->>UC: ReplaceForSource(tenant, uid, source=zitadel, [roleKeys])
|
|||
|
|
UC->>UC: 阻擋 source==manual（防誤洗）
|
|||
|
|
loop key in roleKeys
|
|||
|
|
UC->>Roles: GetByKey (skip 不存在的)
|
|||
|
|
end
|
|||
|
|
UC->>URR: ReplaceForSource(tenant, uid, source, [roleIDs])
|
|||
|
|
Note over URR: DeleteMany source=zitadel + BulkInsert<br/>※ source=manual 紀錄不動
|
|||
|
|
UC->>RBAC: BroadcastReload(tenant)
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
### 6.7 LoadPolicy（Casbin 規則載入）
|
|||
|
|
|
|||
|
|
```mermaid
|
|||
|
|
sequenceDiagram
|
|||
|
|
participant Trigger as Replace / Reload / Boot
|
|||
|
|
participant RBAC as RBACUseCase
|
|||
|
|
participant Roles as RoleRepository
|
|||
|
|
participant RP as RolePermissionRepository
|
|||
|
|
participant Perms as PermissionRepository
|
|||
|
|
participant Enf as casbin.SyncedEnforcer
|
|||
|
|
participant Adp as Redis Adapter
|
|||
|
|
|
|||
|
|
Trigger->>RBAC: LoadPolicy(tenantID)
|
|||
|
|
RBAC->>Roles: ListByTenant
|
|||
|
|
RBAC->>RP: ListByRoles(roleIDs)
|
|||
|
|
RBAC->>Perms: GetByIDs(unique perm ids)
|
|||
|
|
RBAC->>RBAC: 過濾 IsLeaf() && Status=open
|
|||
|
|
RBAC->>RBAC: rules = [tenant, role.key, http_path, http_methods, perm.name]
|
|||
|
|
RBAC->>Enf: ClearPolicy + AddPolicies
|
|||
|
|
RBAC->>Adp: SaveAll(tenant, rules) ← Redis pipelined DEL+SADD
|
|||
|
|
RBAC-->>Trigger: nil
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
### 6.8 Check（授權檢查）
|
|||
|
|
|
|||
|
|
```mermaid
|
|||
|
|
sequenceDiagram
|
|||
|
|
participant MW as middleware.CasbinRBAC
|
|||
|
|
participant Logic as ActorFromContext
|
|||
|
|
participant RBAC as RBACUseCase
|
|||
|
|
participant URR as UserRoleRepository
|
|||
|
|
participant Roles as RoleRepository
|
|||
|
|
participant Enf as casbin.SyncedEnforcer
|
|||
|
|
|
|||
|
|
MW->>Logic: actor (tenant, uid)
|
|||
|
|
MW->>RBAC: Check{tenant, uid, path, method}
|
|||
|
|
RBAC->>RBAC: enforcerFor(tenant)（lazy clone model + AddPolicies）
|
|||
|
|
RBAC->>URR: ListByUser(tenant, uid)
|
|||
|
|
RBAC->>Roles: ListByTenantAndIDs（過濾 status=open）
|
|||
|
|
loop role in roles（any-allow）
|
|||
|
|
RBAC->>Enf: EnforceEx(tenant, role.key, path, method)
|
|||
|
|
alt allow
|
|||
|
|
RBAC-->>MW: CheckResult{Allow=true, MatchedRoleKey, MatchedPolicyRow}
|
|||
|
|
end
|
|||
|
|
end
|
|||
|
|
MW->>MW: result.Allow ? next : 403 (errs.AuthForbidden)
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
### 6.9 Pub/Sub 多 Pod Reload
|
|||
|
|
|
|||
|
|
```mermaid
|
|||
|
|
sequenceDiagram
|
|||
|
|
participant PodA as Pod A (Replace)
|
|||
|
|
participant Redis
|
|||
|
|
participant PodB as Pod B (Subscribe)
|
|||
|
|
participant PodC as Pod C (Subscribe)
|
|||
|
|
|
|||
|
|
PodA->>PodA: RolePermission.Replace + LoadPolicy（本地）
|
|||
|
|
PodA->>Redis: PUBLISH casbin:reload {tenant, ts}
|
|||
|
|
Redis-->>PodB: 推 message
|
|||
|
|
Redis-->>PodC: 推 message
|
|||
|
|
PodB->>PodB: handleReload → LoadPolicy(tenant)
|
|||
|
|
PodC->>PodC: handleReload → LoadPolicy(tenant)
|
|||
|
|
Note over PodB,PodC: 2-3ms 內三個 pod 同步
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
> 兜底：每個 pod 可定時跑 `LoadAllPolicies`（5min cron，未在本模組內排程；建議 svc 層或 cron-worker 觸發）。掃 Redis `permission:casbin:rules:*` key 推導 tenant 列表。
|
|||
|
|
|
|||
|
|
### 6.10 GET /permissions/me（前端選單渲染）
|
|||
|
|
|
|||
|
|
```mermaid
|
|||
|
|
sequenceDiagram
|
|||
|
|
participant Front as Frontend
|
|||
|
|
participant API as GET /permissions/me
|
|||
|
|
participant UC as AuthorizationQueryUseCase
|
|||
|
|
participant URR as UserRoleRepository
|
|||
|
|
participant Roles as RoleRepository
|
|||
|
|
participant RP as RolePermissionRepository
|
|||
|
|
participant Perms as PermissionRepository
|
|||
|
|
|
|||
|
|
Front->>API: Bearer JWT
|
|||
|
|
API->>UC: Me(tenant, uid, includeTree)
|
|||
|
|
UC->>URR: ListByUser
|
|||
|
|
UC->>Roles: ListByTenantAndIDs（過濾 status=open）
|
|||
|
|
UC->>RP: ListByRoles(roleIDs)
|
|||
|
|
UC->>Perms: GetByIDs(unique perm ids)
|
|||
|
|
UC->>UC: permission map = name→status
|
|||
|
|
alt includeTree
|
|||
|
|
UC->>UC: buildPermissionTree + filterOpenNodes
|
|||
|
|
end
|
|||
|
|
UC-->>API: { uid, tenant_id, roles, permissions, tree? }
|
|||
|
|
API-->>Front: 200 OK
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
---
|
|||
|
|
|
|||
|
|
## 7. Casbin 模型（`etc/rbac.conf`）
|
|||
|
|
|
|||
|
|
```ini
|
|||
|
|
[request_definition]
|
|||
|
|
r = tenant, role, path, method
|
|||
|
|
|
|||
|
|
[policy_definition]
|
|||
|
|
p = tenant, role, path, methods, name
|
|||
|
|
|
|||
|
|
[policy_effect]
|
|||
|
|
e = some(where (p.eft == allow))
|
|||
|
|
|
|||
|
|
[matchers]
|
|||
|
|
m = r.tenant == p.tenant && r.role == p.role && keyMatch2(r.path, p.path) && regexMatch(r.method, p.methods)
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
- `keyMatch2`：支援 `/api/v1/members/*` 萬用 path
|
|||
|
|
- `regexMatch`：`GET|POST|PATCH` 多 method 同一 policy
|
|||
|
|
- 平台 Admin bypass 不寫進 matcher，由 middleware 預檢（保留 audit）
|
|||
|
|
|
|||
|
|
---
|
|||
|
|
|
|||
|
|
## 8. ServiceContext 注入
|
|||
|
|
|
|||
|
|
```go
|
|||
|
|
sc.PermissionCatalog // Permission catalog reader (tree / list / status)
|
|||
|
|
sc.PermissionRole // Role CRUD（含 system role 防呆）
|
|||
|
|
sc.PermissionRolePermission // Replace（含 parent closure）
|
|||
|
|
sc.PermissionUserRole // Assign / Revoke / ReplaceForSource
|
|||
|
|
sc.PermissionRoleMapping // 外部 group → Role.Key
|
|||
|
|
sc.PermissionAuthQuery // GET /me 用
|
|||
|
|
sc.PermissionRBAC // Casbin enforcer（Mongo+Redis 全到位才有）
|
|||
|
|
sc.PermissionRoleRepo // 給 SCIM / SyncFromX 等下游使用
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
未啟用 Casbin 時 `PermissionRBAC == nil`，`Check()` 永遠 deny；middleware 會拒絕所有請求（除非 `AllowMissingActor=true`）。
|
|||
|
|
|
|||
|
|
---
|
|||
|
|
|
|||
|
|
## 9. HTTP API（前綴 `/api/v1/permissions`）
|
|||
|
|
|
|||
|
|
| Method | Path | Handler | 說明 |
|
|||
|
|
|--------|------|---------|------|
|
|||
|
|
| GET | `/catalog` | `getPermissionCatalog` | 全局 Catalog（tree=true 取樹狀） |
|
|||
|
|
| GET | `/me` | `getMePermissions` | 當前 user 的 role / permission map |
|
|||
|
|
| GET | `/roles` | `listRoles` | 租戶角色清單 |
|
|||
|
|
| POST | `/roles` | `createRole` | 建立角色（key 不可改） |
|
|||
|
|
| PATCH | `/roles/:id` | `updateRole` | 更新 display_name / status（system role 限制） |
|
|||
|
|
| DELETE | `/roles/:id` | `deleteRole` | 刪角色（system / 仍有指派 → 拒絕） |
|
|||
|
|
| GET | `/roles/:id/permissions` | `getRolePermissions` | 角色目前的 permission 集合 |
|
|||
|
|
| PUT | `/roles/:id/permissions` | `replaceRolePermissions` | 全量取代 + 補 parent + Pub/Sub reload |
|
|||
|
|
| GET | `/users/:uid/roles` | `listUserRoles` | 使用者目前指派的 role |
|
|||
|
|
| POST | `/users/:uid/roles` | `assignUserRole` | 指派角色（source 預設 manual） |
|
|||
|
|
| DELETE | `/users/:uid/roles/:role_id` | `revokeUserRole` | 撤銷單一角色 |
|
|||
|
|
| GET | `/role-mappings` | `listRoleMappings` | 外部映射列表（分頁） |
|
|||
|
|
| PUT | `/role-mappings` | `upsertRoleMapping` | Upsert 外部 group → Role.Key |
|
|||
|
|
| DELETE | `/role-mappings` | `deleteRoleMapping` | 刪除外部映射 |
|
|||
|
|
| POST | `/policy/reload` | `reloadPolicy` | 強制重載（單租戶或 `*`） |
|
|||
|
|
|
|||
|
|
完整錯誤碼註解參見 `generate/api/permission.api`，由 `make gen-doc` 出 OpenAPI。
|
|||
|
|
|
|||
|
|
---
|
|||
|
|
|
|||
|
|
## 10. 設定範例（`etc/gateway.dev.example.yaml`）
|
|||
|
|
|
|||
|
|
```yaml
|
|||
|
|
Permission:
|
|||
|
|
Casbin:
|
|||
|
|
Enabled: false # 預設關閉，啟用後 RBAC enforcement 生效
|
|||
|
|
ModelPath: etc/rbac.conf
|
|||
|
|
PolicyAdapter: auto # auto / redis / mongo
|
|||
|
|
Cache:
|
|||
|
|
UserRolesTTLSeconds: 300
|
|||
|
|
RolePermsTTLSeconds: 300
|
|||
|
|
CatalogTTLSeconds: 600
|
|||
|
|
Reload:
|
|||
|
|
Channel: casbin:reload
|
|||
|
|
DebounceMilliseconds: 200
|
|||
|
|
HeartbeatSeconds: 60
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
---
|
|||
|
|
|
|||
|
|
## 11. CLI / 操作指南
|
|||
|
|
|
|||
|
|
```bash
|
|||
|
|
# 1) 建索引
|
|||
|
|
make mongo-index
|
|||
|
|
|
|||
|
|
# 2) 撰寫 / 修改 catalog
|
|||
|
|
$EDITOR internal/model/permission/seed/catalog.json
|
|||
|
|
|
|||
|
|
# 3) 全平台 seed catalog（不為任何 tenant 建 role）
|
|||
|
|
go run ./cmd/permission-seed -f etc/gateway.dev.yaml
|
|||
|
|
|
|||
|
|
# 4) 同時為 dev tenant seed 5 個 system role
|
|||
|
|
go run ./cmd/permission-seed -f etc/gateway.dev.yaml -tenant TEN-100001
|
|||
|
|
|
|||
|
|
# 5) 多租戶
|
|||
|
|
go run ./cmd/permission-seed -f etc/gateway.dev.yaml -tenant TEN-100001,TEN-100002
|
|||
|
|
|
|||
|
|
# 6) 只 reseed tenant role（catalog 已存在）
|
|||
|
|
go run ./cmd/permission-seed -f etc/gateway.dev.yaml -tenant TEN-100001 -skip-catalog
|
|||
|
|
|
|||
|
|
# 7) 強制全部 pod 重載 policy（HTTP）
|
|||
|
|
curl -X POST http://localhost:8888/api/v1/permissions/policy/reload \
|
|||
|
|
-H "Content-Type: application/json" \
|
|||
|
|
-H "X-Tenant-ID: TEN-100001" -H "X-UID: TEN-100001-OWNER" \
|
|||
|
|
-d '{"tenant_id": "*"}'
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
---
|
|||
|
|
|
|||
|
|
## 12. 中介層（middleware/casbin_rbac.go）
|
|||
|
|
|
|||
|
|
**現況：** middleware 已寫好，但 **尚未掛入 routes.go**（避免影響現有 dev 模式）。要啟用：
|
|||
|
|
|
|||
|
|
```go
|
|||
|
|
import perm "gateway/internal/middleware"
|
|||
|
|
|
|||
|
|
server.AddRoutes(routes,
|
|||
|
|
rest.WithMiddlewares(
|
|||
|
|
[]rest.Middleware{
|
|||
|
|
middleware.CloudEPJWT(serverCtx.AuthToken), // 已存在
|
|||
|
|
middleware.CasbinRBAC(serverCtx.PermissionRBAC, middleware.CasbinRBACOptions{
|
|||
|
|
AllowMissingActor: false,
|
|||
|
|
SkipPaths: map[string]struct{}{
|
|||
|
|
"/api/v1/health": {},
|
|||
|
|
},
|
|||
|
|
}),
|
|||
|
|
}...,
|
|||
|
|
),
|
|||
|
|
rest.WithPrefix("/api/v1/members"),
|
|||
|
|
)
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
要先：
|
|||
|
|
1. 跑 seed CLI 把 catalog + system role 建好
|
|||
|
|
2. 為平台 admin tenant 建 `platform_super_admin` role + bypass allowlist
|
|||
|
|
3. 開啟 `Permission.Casbin.Enabled = true`
|
|||
|
|
4. 設好 `Permission.Reload.Channel`（多 pod 才需要）
|
|||
|
|
|
|||
|
|
---
|
|||
|
|
|
|||
|
|
## 13. 測試
|
|||
|
|
|
|||
|
|
```bash
|
|||
|
|
# 全模組 unit test
|
|||
|
|
go test ./internal/model/permission/...
|
|||
|
|
|
|||
|
|
# 含整合（需要 Mongo + Redis 在 docker compose 起著）
|
|||
|
|
make deps-up
|
|||
|
|
go test -tags=integration ./internal/model/permission/...
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
---
|
|||
|
|
|
|||
|
|
## 14. 設計權衡 / 注意事項
|
|||
|
|
|
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|
|
| 議題 | 決策 | 原因 |
|
|||
|
|
|------|------|------|
|
|||
|
|
| Permission `name` 改名 | **禁止** | 被 RolePermission、UI i18n、Casbin policy.name 引用；廢棄走 `status=close` 然後新建 |
|
|||
|
|
| Role `key` 改名 | **禁止** | 外部 IdP mapping 直接綁 key；改名會切斷映射 |
|
|||
|
|
| `is_system` role 刪除 | 拒絕 | 平台預設角色保留 |
|
|||
|
|
| `is_system` role 改 status | 拒絕 | 維持平台預期行為 |
|
|||
|
|
| `manual` source ReplaceForSource | 拒絕 | 防 SyncFromX 誤洗手動指派 |
|
|||
|
|
| Permission 有 `*` 萬用 path | 不建議裸 `*`；至少帶資源根 | 防 keyMatch2 貪婪命中跨資源 |
|
|||
|
|
| Casbin 多 enforcer | 一 tenant 一個 enforcer，lazy 建 | 比一個 enforcer + filtered policy 簡單，且記憶體可預測 |
|
|||
|
|
| 多 pod 同步 | Pub/Sub 即時 + 5min cron 兜底 | 即時通知 + reboot 不漏 |
|
|||
|
|
| Pub/Sub client | 獨立 go-redis，不走 go-zero pool | go-zero 沒包 Subscribe，且 Subscribe 會佔住 conn |
|
|||
|
|
| Permission Catalog 改動 | seed CLI 即可（idempotent） | UI 端不直接改 catalog；seed JSON 是 SoT |
|
|||
|
|
|
|||
|
|
---
|
|||
|
|
|
|||
|
|
## 15. 後續工作
|
|||
|
|
|
|||
|
|
| 項目 | 預估 |
|
|||
|
|
|------|------|
|
|||
|
|
| Platform admin allowlist + audit log | 後續 |
|
|||
|
|
| RoleMapping 用 SyncFromX 落地（Zitadel / LDAP / SCIM）| 隨對應 SyncFromX usecase 推進 |
|
|||
|
|
| Policy reload cron worker（5 min） | 取自 svc 啟動 ticker |
|
|||
|
|
| Role permission 編輯 UI（不在 Gateway 內，由前端取資） | 前端 |
|
|||
|
|
| 細粒度欄位過濾（`.plain_code` 變體） | logic 層額外查 sub-permission |
|