feat: 接通 PostgreSQL 角色与数据库创建闭环

Reviewed-on: #15

api/database/v1alpha1/postgresqldatabase_types.go

@@ -38,6 +38,16 @@ type PostgreSQLDatabaseStatus struct {
 	// +kubebuilder:validation:Minimum=1
 	// +optional
 	CredentialVersion int64 `json:"credentialVersion,omitempty"`
+	// RoleOID 只在角色创建提交并回读成功后保存，后续不按同名认领。
+	// +kubebuilder:validation:Minimum=1
+	// +kubebuilder:validation:Maximum=4294967295
+	// +optional
+	RoleOID int64 `json:"roleOID,omitempty"`
+	// DatabaseOID 只在数据库创建并回读成功后保存；缺失不代表允许认领已有对象。
+	// +kubebuilder:validation:Minimum=1
+	// +kubebuilder:validation:Maximum=4294967295
+	// +optional
+	DatabaseOID int64 `json:"databaseOID,omitempty"`
 	// Phase 暂不冻结供应子阶段枚举；它不是操作授权或绑定的替代记录。
 	// +optional
 	Phase string `json:"phase,omitempty"`
@@ -50,6 +60,10 @@ type PostgreSQLDatabaseStatus struct {
 // +kubebuilder:object:root=true
 // +kubebuilder:subresource:status
 // +kubebuilder:resource:scope=Cluster
+// +kubebuilder:validation:XValidation:rule="!has(self.status) || !has(self.status.roleOID) || (has(self.status.credentialVersion) && has(self.status.instanceUID))",message="roleOID requires confirmed credentials and instanceUID"
+// +kubebuilder:validation:XValidation:rule="!has(self.status) || !has(self.status.databaseOID) || has(self.status.roleOID)",message="databaseOID requires roleOID"
+// +kubebuilder:validation:XValidation:rule="!(has(oldSelf.status) && has(oldSelf.status.roleOID)) || (has(self.status) && has(self.status.roleOID) && self.status.roleOID == oldSelf.status.roleOID)",message="confirmed roleOID cannot change or be removed"
+// +kubebuilder:validation:XValidation:rule="!(has(oldSelf.status) && has(oldSelf.status.databaseOID)) || (has(self.status) && has(self.status.databaseOID) && self.status.databaseOID == oldSelf.status.databaseOID)",message="confirmed databaseOID cannot change or be removed"
 // +kubebuilder:validation:XValidation:rule="!has(self.status) || !has(self.status.credentialVersion) || has(self.status.credentialRef)",message="credentialVersion requires credentialRef"
 // +kubebuilder:validation:XValidation:rule="!(has(oldSelf.status) && has(oldSelf.status.credentialRef)) || (has(self.status) && has(self.status.credentialRef) && self.status.credentialRef == oldSelf.status.credentialRef)",message="recorded credentialRef cannot change or be removed"
 // +kubebuilder:validation:XValidation:rule="!(has(oldSelf.status) && has(oldSelf.status.credentialVersion)) || (has(self.status) && has(self.status.credentialVersion) && self.status.credentialVersion == oldSelf.status.credentialVersion)",message="confirmed credentialVersion cannot change or be removed"

api/database/v1alpha1/resource_status_test.go

@@ -0,0 +1,40 @@
+package v1alpha1_test
+
+import (
+	"testing"
+
+	databasev1alpha1 "git.ddupan.top/panxiao81/ayatori/api/database/v1alpha1"
+	apierrors "k8s.io/apimachinery/pkg/api/errors"
+	"sigs.k8s.io/controller-runtime/pkg/client"
+)
+
+func testResourceStatus(t *testing.T, api client.Client) {
+	object := validDatabase("resource-status")
+	if err := api.Create(t.Context(), object); err != nil {
+		t.Fatal(err)
+	}
+	invalid := object.DeepCopy()
+	invalid.Status.RoleOID = 11
+	if err := api.Status().Update(t.Context(), invalid); !apierrors.IsInvalid(err) {
+		t.Fatal("无凭据不能确认角色", err)
+	}
+	object.Status.InstanceUID = "instance-uid"
+	object.Status.CredentialRef = &databasev1alpha1.CredentialReference{Mount: "application-secrets", Path: "applications/test"}
+	object.Status.CredentialVersion = 1
+	object.Status.RoleOID, object.Status.DatabaseOID = 11, 22
+	if err := api.Status().Update(t.Context(), object); err != nil {
+		t.Fatal(err)
+	}
+	for _, change := range []func(*databasev1alpha1.PostgreSQLDatabase){
+		func(d *databasev1alpha1.PostgreSQLDatabase) { d.Status.RoleOID = 0 },
+		func(d *databasev1alpha1.PostgreSQLDatabase) { d.Status.RoleOID = 12 },
+		func(d *databasev1alpha1.PostgreSQLDatabase) { d.Status.DatabaseOID = 0 },
+		func(d *databasev1alpha1.PostgreSQLDatabase) { d.Status.DatabaseOID = 23 },
+	} {
+		invalid = object.DeepCopy()
+		change(invalid)
+		if err := api.Status().Update(t.Context(), invalid); !apierrors.IsInvalid(err) {
+			t.Fatal("已确认 OID 不得覆盖或移除", err)
+		}
+	}
+}

api/database/v1alpha1/validation_test.go

@@ -62,6 +62,7 @@ func TestDatabaseAPI(t *testing.T) {
 	t.Run("拒绝非法声明", func(t *testing.T) { testInvalidDeclarations(t, client) })
 	t.Run("status隔离和绑定并发", func(t *testing.T) { testBindingWrites(t, client) })
 	t.Run("凭据位置与确认版本", func(t *testing.T) { testCredentialStatus(t, client) })
+	t.Run("资源创建确认", func(t *testing.T) { testResourceStatus(t, client) })
 	t.Run("仓库示例", func(t *testing.T) { testSamples(t, client, scheme) })
 }
 

config/crd/bases/database.ayatori.ddupan.top_postgresqldatabases.yaml

@@ -221,6 +221,12 @@ spec:
                 format: int64
                 minimum: 1
                 type: integer
+              databaseOID:
+                description: DatabaseOID 只在数据库创建并回读成功后保存；缺失不代表允许认领已有对象。
+                format: int64
+                maximum: 4294967295
+                minimum: 1
+                type: integer
               instanceUID:
                 description: InstanceUID 记录观察时的实例身份，不把同名新实例视为原目标。
                 type: string
@@ -230,11 +236,28 @@ spec:
               phase:
                 description: Phase 暂不冻结供应子阶段枚举；它不是操作授权或绑定的替代记录。
                 type: string
+              roleOID:
+                description: RoleOID 只在角色创建提交并回读成功后保存，后续不按同名认领。
+                format: int64
+                maximum: 4294967295
+                minimum: 1
+                type: integer
             type: object
         required:
         - spec
         type: object
         x-kubernetes-validations:
+        - message: roleOID requires confirmed credentials and instanceUID
+          rule: '!has(self.status) || !has(self.status.roleOID) || (has(self.status.credentialVersion)
+            && has(self.status.instanceUID))'
+        - message: databaseOID requires roleOID
+          rule: '!has(self.status) || !has(self.status.databaseOID) || has(self.status.roleOID)'
+        - message: confirmed roleOID cannot change or be removed
+          rule: '!(has(oldSelf.status) && has(oldSelf.status.roleOID)) || (has(self.status)
+            && has(self.status.roleOID) && self.status.roleOID == oldSelf.status.roleOID)'
+        - message: confirmed databaseOID cannot change or be removed
+          rule: '!(has(oldSelf.status) && has(oldSelf.status.databaseOID)) || (has(self.status)
+            && has(self.status.databaseOID) && self.status.databaseOID == oldSelf.status.databaseOID)'
         - message: credentialVersion requires credentialRef
           rule: '!has(self.status) || !has(self.status.credentialVersion) || has(self.status.credentialRef)'
         - message: recorded credentialRef cannot change or be removed

docs/database/README.md

@@ -1,7 +1,7 @@
 # Database 模块
 
 Database 是 Ayatori 首批实际产品领域之一。当前已包含三资源 API、分层绑定与 Instance 原生
-管理能力观测；尚未完成 Database 供应/导入、Tenant 凭据交付与资源回收链路。
+管理能力观测、凭据准备及显式启用的角色/数据库创建；扩展、导入、Tenant 交付与回收尚未完成。
 
 ## 当前设计（2026-09-24）
 
@@ -12,7 +12,7 @@ Retain 后人工重新绑定与资源侧 Delete。撤销 PostgreSQL ownership re
 依据 [ADR-0009](../decisions/0009-database-resource-and-claim.md)，当前合同见
 [系统规格](specification.md)。下面的迁移来源与已存在代码不反向约束新设计。
 registry adapter、专属迁移/测试及 Instance 的 registry 判定现已撤除；Instance 根据完整管理
-能力观察直接判定 Ready。Database 资源与绑定已接入，导入、角色/凭据供应及回收仍未完成。wiki 同步位置见
+能力观察直接判定 Ready。Database 资源与绑定、角色/凭据供应已接入，导入及回收仍未完成。wiki 同步位置见
 `homelab-wiki/services/postgresql-tenant-operator.md`，跨仓库发布状态由 wiki 的同步记录维护。
 
 ## 来源基线
@@ -201,14 +201,57 @@ application 保留 I/O 顺序、消费方接口及并发快照，不再复用绑
 同样可能保守地要求人工处理，不承诺无损接续；多副本部署应启用既有 leader election。
 
 成功只设置 `CredentialsReady=True`，Database Ready 仍为 False/ProvisioningIncomplete，
-Tenant 仍未完成交付。本切片没有 PostgreSQL role/database 创建、扩展安装、ESO 投射、
+Tenant 仍未完成交付。凭据准备本身不创建 PostgreSQL 资源；后续创建需另行启用下述用例。
-Retain 释放或 Delete 清理，也不会解除 finalizer。不要作为完整 DBaaS 部署。
+扩展安装、ESO 投射、Retain 释放或 Delete 清理尚未接入，也不会解除 finalizer。不要作为完整 DBaaS 部署。
 
 单元测试穷举前置条件；真实 API server + 隔离 Bao 验证创建、状态确认、幂等、重启、并发、
 依赖恢复、固定位置、不确定结果、确认保存失败和删除边界；实际 manager 验证 watch 驱动
 及重启。该 fixture 只声明 Instance 前置 Ready，真实 PostgreSQL 管理能力由既有 Instance
 集成测试覆盖，不把凭据准备验收当成实际建库或应用登录验收。
 
+## PostgreSQL 资源创建闭环
+
+在管理 Secret、OpenBao 认证和凭据准备配置之上，显式设置 `--database-provision-resources`
+才启用外部角色/数据库写入；默认关闭。升级时先安装新 CRD，供应字段见
+[API 合同](api-reference.md#当前-api-切片)。只处理 Provision 来源，导入资源不进入创建流程。
+
+`DatabaseProvisioning` 在每轮验证双向绑定、UID、删除/Released 状态、保护和当前 Instance
+Ready，读取固定位置的已确认凭据。所有 SQL 操作复用 InstanceService 已有的管理连接及
+Secret 刷新机制，不再开一个管理连接池。执行前重新查询非 superuser 管理能力；外部操作
+前后直接回读 API 快照，发生并发变更则停止确认，不盲目覆盖 status。
+启用资源创建时，`DatabaseReconciliation` 在同一条 reconcile 中先运行凭据准备/检查，
+再运行资源供应用例，不同时注册独立凭据 controller，避免两个 worker 争写同一资源状态。
+
+创建分为三个可观察步骤：
+
+1. 保存 CreatingRole，事务内创建无管理特权的 LOGIN owner 并授予管理账号 SET 权限；
+   提交并回读成功后保存 `status.roleOID`。
+2. 保存 CreatingDatabase，创建以已确认角色为 owner 且 `ALLOW_CONNECTIONS false` 的数据库；
+   回读成功后保存 `status.databaseOID`。
+3. 在已确认对象上以 owner 收紧 ACL：撤销 PUBLIC CONNECT、授予 owner CONNECT，再开放
+   连接入口。ACL 收敛可幂等重试，不重置密码或更换 owner。
+
+OID 只保存在 CR，表示本次成功创建的回读身份，不是 registry 或认领机制。未知同名对象、
+已确认对象消失/被重建、owner/角色特权漂移均报 Conflict。CreatingRole/CreatingDatabase
+未留下对应 OID 时，下轮保守停止；即使请求可能尚未发出，也不尝试推断或自动补记。
+网络结果不确定、创建成功后确认写入失败同样交给人工处理。诊断包含 Database、Instance、
+实际 database/role、失败步骤；确认 OID 独立保留。依赖或明确权限拒绝可等待恢复。
+OID 不是跨集群/备份恢复的稳定身份，恢复后须人工核对，不能靠匹配 OID 推导管理权。
+
+`ResourcesReady=True` 仅表示角色、数据库及连接 ACL 已确认，不代表扩展或 Tenant 交付完成；
+Database/Tenant 总体 Ready 仍为 False。当前不轮换密码、不做运行期应用登录健康检查，也不
+撤销其他数据库的 PUBLIC 权限。管理员须保证共享实例中其他数据库的接入策略满足隔离要求。
+
+真实 API server + PostgreSQL + OpenBao 测试覆盖实际密码登录、owner 建表、应用管理权限拒绝、
+无关账号连接拒绝、重试/重启、权限恢复、同名冲突、角色重建、并发授权、创建结果丢失、
+确认持久化失败、删除停止与实际 manager 的观察链路。保留外部操作/API 写入间的非原子边界，
+不承诺控制面与数据库之间的事务或对任意管理员并发 DDL 的无损恢复。
+
+遵循 PostgreSQL 官方的
+[CREATE DATABASE 非事务与 owner 权限合同](https://www.postgresql.org/docs/17/sql-createdatabase.html)
+和 [CREATEROLE 的成员授权](https://www.postgresql.org/docs/17/role-attributes.html)。
+不新增 controller 通用生命周期框架，继续采用既有直接观察、resourceVersion 保护和条件报告。
+
 ## OpenBao Kubernetes 认证会话
 
 公共 `internal/infra/openbao.KubernetesSession` 复用官方 Kubernetes auth helper 和 `LifetimeWatcher`

docs/database/api-reference.md

@@ -2,9 +2,9 @@
 
 | 项目 | 内容 |
 | --- | --- |
-| 状态 | API schema 与绑定 controller 已实现；供应、交付与删除清理未接入 |
+| 状态 | API、绑定、凭据准备及角色/数据库创建已实现；扩展、导入、交付与删除清理未接入 |
 | API group/version | `database.ayatori.ddupan.top/v1alpha1` |
-| 最后更新 | 2026-09-27 |
+| 最后更新 | 2026-09-29 |
 
 以 [系统规格](specification.md) 与
 [ADR-0009](../decisions/0009-database-resource-and-claim.md) 为准。类型与生成的 CRD 已纳入源码，
@@ -26,6 +26,7 @@ Go 类型位于 `api/database/v1alpha1`，CRD 随 `config/crd` 发布；manager
 | Database | `status.instanceUID` | 观察时的 Instance 身份 |
 | Database | `status.credentialRef.mount/path` | 首次写入前固定的 KV v2 位置，不随部署配置迁移 |
 | Database | `status.credentialVersion` | 创建并回读成功后确认的正整数版本；省略表示未确认 |
+| Database | `status.roleOID`、`status.databaseOID` | 分别创建并回读成功后确认的 PostgreSQL OID；不能凭同名补记 |
 | Tenant | `spec.provision.instanceRef.name` | 动态申请来源，与 `spec.databaseRef` 互斥且必须二选一 |
 | Tenant | `spec.provision.database/loginRole` | 可省略，语义默认值由 controller 解析，不由 CRD 推导 |
 | Tenant | `spec.databaseRef.name` | 显式申请已有 Database，不额外指定 Instance |
@@ -47,6 +48,13 @@ KV 版本，删除或版本漂移均需人工处理，不回退旧版本或生
 `CreationStarted` 且无确认版本表示创建未完成确认，重入时停在 Conflict；不尝试推断
 进程中断前请求是否发出。完整执行和测试边界见[凭据准备闭环](README.md#凭据准备闭环)。
 
+角色/数据库 OID 为 1–4294967295，写入后不可修改或移除。角色确认要求已有凭据确认与
+Instance UID；数据库确认要求先有角色确认。`ResourcesReady` 的 CreatingRole/CreatingDatabase
+没有相应 OID 时，下轮转 Conflict；依赖故障不清空确认。旧 CRD 裁剪 OID 会阻止继续下一步，
+但不能回滚已发出的外部创建，因此必须先升级 CRD 再启用供应。
+`ResourcesReady=True/Available` 只表示角色、数据库和 ACL 已确认，总体 Ready 仍不放行。
+详见[资源创建闭环](README.md#postgresql-资源创建闭环)。
+
 示例：[Instance](../../config/samples/database_v1alpha1_postgresqlinstance.yaml)、
 [导入 Database](../../config/samples/database_v1alpha1_postgresqldatabase.yaml)、
 [动态/已有资源申请](../../config/samples/database_v1alpha1_postgresqltenant.yaml)。
@@ -131,7 +139,7 @@ Database 是平台管理的集群级资源，不归属于应用 namespace，也
 普通申请者通过 Tenant 申请使用，不能自行修改 Database 回收策略或将 Released 资源重新开放；
 这些资源管理操作由平台管理员授权。controller 的绑定协调权限与用户申请权限分别配置。
 
-以下是行为合同，具体 schema 见当前 API 切片与生成的 CRD；后端行为尚未实现：
+以下是行为合同，具体 schema 见当前 API 切片与生成的 CRD；导入、交付与回收尚未实现：
 
 | 内容 | 合同 |
 | --- | --- |

docs/database/deployment.md

@@ -1,6 +1,6 @@
 # 部署与配置
 
-> 本页区分已实现的 Instance 观测、认证和凭据准备配置，与尚未接入的 PostgreSQL 供应/交付合同。
+> 本页区分已实现的 Instance 观测、认证、凭据准备和资源创建配置，与尚未接入的完整供应/交付合同。
 > 完整 Database 服务仍不可部署使用；当前可执行入口见 [模块说明](README.md)。
 
 | 项目 | 内容 |
@@ -46,6 +46,7 @@ Instance 观测）与 `--database-root-cert`（公开 PostgreSQL CA PEM 路径
 | `--openbao-auth-role` | 已实现，启用时必填 | OpenBao 登录 role |
 | `--openbao-ca-cert` | 已实现，默认系统信任根 | OpenBao 公开 CA PEM 路径 |
 | `--database-credential-mount` | 已实现，默认空 | 显式设置后启用应用凭据准备，要求已配置 OpenBao 认证 |
+| `--database-provision-resources` | 已实现，默认 false | 启用角色/数据库及 ACL 创建；要求管理 Secret namespace、凭据 mount 和认证配置，先升级 CRD |
 | `--openbao-service-account-namespace` | 已实现，启用时必填 | TokenRequest 目标 SA 的固定 namespace |
 | `--openbao-service-account-name` | 已实现，启用时必填 | TokenRequest 目标 SA 名称 |
 | `--openbao-token-audience` | 已实现，`openbao` | SA JWT audience，必须匹配 OpenBao role |

internal/bootstrap/database.go

@@ -17,10 +17,11 @@ import (
 )
 
 type databaseOptions struct {
-	secretNamespace  string
+	secretNamespace    string
-	rootCert         string
+	rootCert           string
-	credentialMount  string
+	credentialMount    string
-	credentialPrefix string
+	credentialPrefix   string
+	provisionResources bool
 }
 
 func (o *databaseOptions) bindFlags(flags *flag.FlagSet) {
@@ -29,6 +30,7 @@ func (o *databaseOptions) bindFlags(flags *flag.FlagSet) {
 	flags.StringVar(&o.rootCert, "database-root-cert", "", "PostgreSQL 管理连接信任的公开 CA bundle 路径")
 	flags.StringVar(&o.credentialMount, "database-credential-mount", "", "应用凭据 KV v2 mount；为空时不启用凭据准备")
 	flags.StringVar(&o.credentialPrefix, "database-credential-prefix", "applications", "应用凭据路径前缀；已有固定位置不随配置变化迁移")
+	flags.BoolVar(&o.provisionResources, "database-provision-resources", false, "启用 PostgreSQL 角色和数据库创建；需要 Instance 管理凭据及 OpenBao 凭据准备")
 }
 
 func (o databaseOptions) configureManager(options *ctrl.Options) {
@@ -40,25 +42,30 @@ func (o databaseOptions) configureManager(options *ctrl.Options) {
 // registerDatabaseControllers 封装 Database 的内部装配，并返回在 manager 停止后执行的清理。
 func registerDatabaseControllers(ctx context.Context, manager ctrl.Manager, options databaseOptions, baoClient *bao.Client) (func(), error) {
 	closeDatabaseConnections := func() {}
+	var backend *application.InstanceService
 	if options.secretNamespace != "" {
 		service, err := setupInstanceObservation(manager, options.secretNamespace, options.rootCert)
 		if err != nil {
 			return nil, fmt.Errorf("set up Instance observation: %w", err)
 		}
 		closeDatabaseConnections = service.Close
+		backend = service
 	}
 	if err := wireBindingController(manager.GetClient(), manager.GetAPIReader()).SetupWithManager(ctx, manager); err != nil {
 		closeDatabaseConnections()
 		return nil, fmt.Errorf("set up Database binding controller: %w", err)
 	}
-	if err := setupCredentialPreparation(manager, options, baoClient); err != nil {
+	if err := registerDatabaseSupplyController(manager, options, baoClient, backend); err != nil {
 		closeDatabaseConnections()
-		return nil, fmt.Errorf("set up Database credential preparation: %w", err)
+		return nil, fmt.Errorf("register Database supply controller: %w", err)
 	}
 	return closeDatabaseConnections, nil
 }
 
-func setupCredentialPreparation(manager ctrl.Manager, options databaseOptions, baoClient *bao.Client) error {
+func registerDatabaseSupplyController(manager ctrl.Manager, options databaseOptions, baoClient *bao.Client, backend *application.InstanceService) error {
+	if options.provisionResources && (backend == nil || options.credentialMount == "") {
+		return fmt.Errorf("database resource provisioning requires management Secret namespace and credential mount")
+	}
 	if options.credentialMount == "" {
 		return nil
 	}
@@ -69,6 +76,9 @@ func setupCredentialPreparation(manager ctrl.Manager, options databaseOptions, b
 	if err != nil {
 		return err
 	}
+	if options.provisionResources {
+		return wireProvisioningController(manager.GetClient(), manager.GetAPIReader(), store, backend).SetupWithManager(manager)
+	}
 	return wireCredentialController(manager.GetClient(), manager.GetAPIReader(), store).SetupWithManager(manager)
 }
 

internal/bootstrap/database_wiring.go

@@ -26,3 +26,13 @@ func wireInstanceController(writer client.Client, reader client.Reader, observer
 	service := &application.InstanceReconciliation{Resources: resources, Observer: observer}
 	return databasecontroller.NewInstanceReconciler(writer, service, resources, namespace)
 }
+
+func wireProvisioningController(writer client.Client, reader client.Reader, store application.CredentialStore, backend application.ProvisioningBackend) *databasecontroller.ProvisioningReconciler {
+	resources := &kubernetes.ProvisioningResources{Client: writer, Reader: reader}
+	credentialResources := &kubernetes.CredentialResources{Client: writer, Reader: reader}
+	service := &application.DatabaseReconciliation{
+		Credentials:  &application.CredentialPreparation{Resources: credentialResources, Store: store},
+		Provisioning: &application.DatabaseProvisioning{Resources: resources, Credentials: store, Backend: backend},
+	}
+	return databasecontroller.NewProvisioningReconciler(writer, service)
+}

internal/bootstrap/database_wiring_test.go

@@ -39,6 +39,11 @@ func TestDatabaseExplicitWiring(t *testing.T) {
 	if !ok || resources.Reader != directReader || resources.Client != writer || reconciler.Service.Observer != observer || reconciler.Presenter != resources {
 		t.Fatal("Instance 的服务或读取边界未按依赖图注入")
 	}
+	provisioner := wireProvisioningController(writer, directReader, nil, observer)
+	provisioningResources, ok := provisioner.Service.Provisioning.Resources.(*kubernetes.ProvisioningResources)
+	if !ok || provisioningResources.Client != writer || provisioningResources.Reader != directReader || provisioner.Service.Provisioning.Backend != observer {
+		t.Fatal("资源供应必须复用已有 Instance 管理服务和 API 客户端")
+	}
 }
 
 // 防止领域重新依赖用例/存储，也防止 controller 再次私自构造具体 adapter。

internal/bootstrap/manager_integration_test.go

@@ -67,7 +67,7 @@ func TestBootstrapWithRealAPIServer(t *testing.T) {
 		t.Fatal(err)
 	}
 	options.database.credentialMount = "secret"
-	if err := setupCredentialPreparation(manager, options.database, fixtureClient); err != nil {
+	if err := registerDatabaseSupplyController(manager, options.database, fixtureClient, nil); err != nil {
 		t.Fatal(err)
 	}
 	done := make(chan error, 1)

internal/bootstrap/options_test.go

@@ -63,12 +63,15 @@ func TestCredentialPreparationOptions(t *testing.T) {
 	if options.database.credentialMount != "applications-kv" || options.database.credentialPrefix != "database" {
 		t.Fatal("凭据准备参数未传入领域装配")
 	}
-	if err := setupCredentialPreparation(nil, options.database, nil); err == nil {
+	if err := registerDatabaseSupplyController(nil, options.database, nil, nil); err == nil {
 		t.Fatal("启用凭据准备必须有显式配置的认证 client")
 	}
-	if err := setupCredentialPreparation(nil, databaseOptions{}, nil); err != nil {
+	if err := registerDatabaseSupplyController(nil, databaseOptions{}, nil, nil); err != nil {
 		t.Fatal("默认停用凭据准备不应要求后端")
 	}
+	if err := registerDatabaseSupplyController(nil, databaseOptions{provisionResources: true}, nil, nil); err == nil {
+		t.Fatal("启用资源供应必须有管理连接及凭据准备")
+	}
 }
 
 func TestManagerFlagOverrides(t *testing.T) {

internal/database/adapter/kubernetes/provisioning_resources.go

@@ -0,0 +1,111 @@
+package kubernetes
+
+import (
+	"context"
+	"fmt"
+	"reflect"
+
+	databasev1alpha1 "git.ddupan.top/panxiao81/ayatori/api/database/v1alpha1"
+	"git.ddupan.top/panxiao81/ayatori/internal/database/application"
+	"git.ddupan.top/panxiao81/ayatori/internal/database/domain/provisioning"
+	"k8s.io/apimachinery/pkg/api/equality"
+	apierrors "k8s.io/apimachinery/pkg/api/errors"
+	"k8s.io/apimachinery/pkg/api/meta"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/types"
+	"sigs.k8s.io/controller-runtime/pkg/client"
+)
+
+const resourcesReadyCondition = "ResourcesReady"
+
+type ProvisioningResources struct {
+	Client client.Client
+	Reader client.Reader
+}
+
+func (r *ProvisioningResources) Load(ctx context.Context, name string) (*application.ProvisioningRecord, error) {
+	// 同一组 API 事实复用映射；供应用例不持有凭据准备用例的快照或 repository。
+	facts, err := (&CredentialResources{Client: r.Client, Reader: r.Reader}).Load(ctx, name)
+	if err != nil || facts == nil {
+		return nil, err
+	}
+	object := &databasev1alpha1.PostgreSQLDatabase{}
+	if err := r.Reader.Get(ctx, types.NamespacedName{Name: name}, object); err != nil {
+		return nil, err
+	}
+	if object.ResourceVersion != facts.Revision {
+		return nil, provisioningSnapshotConflict(name)
+	}
+	record := &application.ProvisioningRecord{Target: facts.Target, Revision: facts.Revision, TenantGeneration: facts.TenantGeneration,
+		InstanceGeneration: facts.InstanceGeneration, Credentials: facts.Status, State: provisioningStatus(object)}
+	if facts.Instance == nil {
+		return record, nil
+	}
+	instance := &databasev1alpha1.PostgreSQLInstance{}
+	if err := r.Reader.Get(ctx, types.NamespacedName{Name: facts.Database.Instance}, instance); err != nil {
+		return nil, err
+	}
+	if string(instance.UID) != facts.Instance.Identity.UID || instance.Generation != facts.InstanceGeneration ||
+		(!instance.DeletionTimestamp.IsZero()) != facts.Instance.Deleting || currentReady(instance.Generation, instance.Status.Conditions) != facts.Instance.Ready {
+		return nil, provisioningSnapshotConflict(name)
+	}
+	mapped, err := instanceRecord(instance)
+	if err != nil {
+		return nil, err
+	}
+	record.InstanceTarget = mapped.Target
+	return record, nil
+}
+
+func provisioningStatus(object *databasev1alpha1.PostgreSQLDatabase) provisioning.State {
+	state := provisioning.State{RoleOID: uint32(object.Status.RoleOID), DatabaseOID: uint32(object.Status.DatabaseOID), Phase: provisioning.Pending}
+	if condition := meta.FindStatusCondition(object.Status.Conditions, resourcesReadyCondition); condition != nil {
+		state.Phase, state.Message = provisioning.Phase(condition.Reason), condition.Message
+	}
+	return state
+}
+
+func (r *ProvisioningResources) Save(ctx context.Context, record *application.ProvisioningRecord, state provisioning.State) (*application.ProvisioningRecord, error) {
+	object := &databasev1alpha1.PostgreSQLDatabase{}
+	if err := r.Reader.Get(ctx, types.NamespacedName{Name: record.Database.Identity.Name}, object); err != nil {
+		return nil, err
+	}
+	if object.ResourceVersion != record.Revision || string(object.UID) != record.Database.Identity.UID {
+		return nil, provisioningSnapshotConflict(object.Name)
+	}
+	previous := object.Status.DeepCopy()
+	object.Status.RoleOID, object.Status.DatabaseOID = int64(state.RoleOID), int64(state.DatabaseOID)
+	status := metav1.ConditionFalse
+	if state.Phase == provisioning.Available {
+		status = metav1.ConditionTrue
+	}
+	meta.SetStatusCondition(&object.Status.Conditions, metav1.Condition{Type: resourcesReadyCondition, Status: status,
+		Reason: string(state.Phase), Message: state.Message, ObservedGeneration: object.Generation})
+	if !equality.Semantic.DeepEqual(*previous, object.Status) {
+		if err := r.Client.Status().Update(ctx, object); err != nil {
+			return nil, err
+		}
+	}
+	if object.Status.RoleOID != int64(state.RoleOID) || object.Status.DatabaseOID != int64(state.DatabaseOID) {
+		return nil, fmt.Errorf("资源 OID 未被 API 保留；请先升级 Database CRD，未继续供应")
+	}
+	updated := *record
+	updated.Revision, updated.State = object.ResourceVersion, provisioningStatus(object)
+	return &updated, nil
+}
+
+func (r *ProvisioningResources) CheckCurrent(ctx context.Context, record *application.ProvisioningRecord) error {
+	current, err := r.Load(ctx, record.Database.Identity.Name)
+	if err != nil {
+		return err
+	}
+	if current == nil || !reflect.DeepEqual(current, record) {
+		return provisioningSnapshotConflict(record.Database.Identity.Name)
+	}
+	return nil
+}
+
+func provisioningSnapshotConflict(name string) error {
+	return apierrors.NewConflict(databasev1alpha1.GroupVersion.WithResource("postgresqldatabases").GroupResource(), name,
+		fmt.Errorf("供应快照发生变化；停止本轮并重新观察"))
+}

internal/database/adapter/postgresql/provisioning_fixture_integration_test.go

@@ -0,0 +1,184 @@
+//go:build integration
+
+package postgresql_test
+
+import (
+	"context"
+	"os/exec"
+	"regexp"
+	"strings"
+	"testing"
+	"time"
+
+	databasev1alpha1 "git.ddupan.top/panxiao81/ayatori/api/database/v1alpha1"
+	"git.ddupan.top/panxiao81/ayatori/internal/database/adapter/kubernetes"
+	"git.ddupan.top/panxiao81/ayatori/internal/database/adapter/openbao"
+	"git.ddupan.top/panxiao81/ayatori/internal/database/application"
+	databasecontroller "git.ddupan.top/panxiao81/ayatori/internal/database/controller"
+	"git.ddupan.top/panxiao81/ayatori/internal/database/domain/provisioning"
+	bao "github.com/openbao/openbao/api/v2"
+	"k8s.io/apimachinery/pkg/api/meta"
+	"k8s.io/apimachinery/pkg/runtime"
+	ctrl "sigs.k8s.io/controller-runtime"
+	"sigs.k8s.io/controller-runtime/pkg/client"
+	"sigs.k8s.io/controller-runtime/pkg/envtest"
+)
+
+type provisioningFixture struct {
+	*credentialFixture
+	api       client.Client
+	scheme    *runtime.Scheme
+	store     *openbao.Credentials
+	resources *kubernetes.ProvisioningResources
+	usecase   application.DatabaseProvisioning
+}
+
+func newProvisioningFixture(t *testing.T) *provisioningFixture {
+	t.Helper()
+	f := newCredentialFixture(t)
+	useNativeManager(t, f)
+	if _, err := envtest.InstallCRDs(f.config, envtest.CRDInstallOptions{Paths: []string{"../../../../config/crd/bases"}, ErrorIfPathMissing: true}); err != nil {
+		t.Fatal(err)
+	}
+	scheme := runtime.NewScheme()
+	if err := databasev1alpha1.AddToScheme(scheme); err != nil {
+		t.Fatal(err)
+	}
+	api, err := client.New(f.config, client.Options{Scheme: scheme})
+	if err != nil {
+		t.Fatal(err)
+	}
+	object := &databasev1alpha1.PostgreSQLInstance{Name: "supply-instance", Spec: databasev1alpha1.PostgreSQLInstanceSpec{
+		Endpoint:           databasev1alpha1.PostgreSQLEndpoint{Host: fixtureHost, HostAddr: fixtureAddress, Port: int32(f.port), SSLMode: "disable"},
+		AdminCredentialRef: databasev1alpha1.AdminCredentialReference{Name: secretName, UsernameKey: managementUsernameKey, PasswordKey: managementPasswordKey},
+	}}
+	if err := api.Create(f.ctx, object); err != nil {
+		t.Fatal(err)
+	}
+	instanceResources := &kubernetes.InstanceResources{Client: api, Reader: api}
+	instanceService := &application.InstanceReconciliation{Resources: instanceResources, Observer: f.service}
+	result, err := instanceService.Reconcile(f.ctx, object.Name)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := instanceResources.PresentInstance(f.ctx, result); err != nil {
+		t.Fatal(err)
+	}
+	if err := api.Get(f.ctx, client.ObjectKeyFromObject(object), object); err != nil {
+		t.Fatal(err)
+	}
+	if !meta.IsStatusConditionTrue(object.Status.Conditions, "Ready") {
+		t.Fatal("实际管理账号未就绪")
+	}
+	store := provisioningBao(t)
+	resources := &kubernetes.ProvisioningResources{Client: api, Reader: api}
+	return &provisioningFixture{credentialFixture: f, api: api, scheme: scheme, store: store, resources: resources,
+		usecase: application.DatabaseProvisioning{Resources: resources, Credentials: store, Backend: f.service}}
+}
+
+// 三后端组合验收只启动自己的 dev Bao；不读取环境 token 或外部地址。
+func provisioningBao(t *testing.T) *openbao.Credentials {
+	t.Helper()
+	const image = "openbao/openbao@sha256:5b2486ab0fb90bbc788cc345b0a08616dfb375873ee8be5df3a2fd4d378a67e0"
+	const token = "AYATORI-TEST-ONLY-supply-token"
+	prepare, cancel := context.WithTimeout(t.Context(), 5*time.Minute)
+	defer cancel()
+	if exec.CommandContext(prepare, "docker", "image", "inspect", image).Run() != nil {
+		if output, err := exec.CommandContext(prepare, "docker", "pull", image).CombinedOutput(); err != nil {
+			t.Fatalf("隔离 Bao 镜像准备失败：%s", output)
+		}
+	}
+	ctx, stop := context.WithTimeout(t.Context(), time.Minute)
+	defer stop()
+	output, err := exec.CommandContext(ctx, "docker", "run", "--pull=never", "--rm", "-d", "-p", "127.0.0.1::8200", image,
+		"server", "-dev", "-dev-root-token-id="+token, "-dev-listen-address=0.0.0.0:8200").Output()
+	if err != nil {
+		t.Fatal("隔离 Bao 启动失败")
+	}
+	id := strings.TrimSpace(string(output))
+	if !regexp.MustCompile(`^[a-f0-9]{64}$`).MatchString(id) {
+		t.Fatal("无效容器 ID")
+	}
+	t.Cleanup(func() {
+		cleanup, cancel := context.WithTimeout(context.Background(), 30*time.Second)
+		defer cancel()
+		if exec.CommandContext(cleanup, "docker", "rm", "-f", id).Run() != nil {
+			t.Error("隔离 Bao 清理失败")
+		}
+	})
+	output, err = exec.CommandContext(ctx, "docker", "inspect", "--format", `{{(index (index .NetworkSettings.Ports "8200/tcp") 0).HostPort}}`, id).Output()
+	if err != nil {
+		t.Fatal("隔离 Bao 端口不可读")
+	}
+	backend, err := bao.NewClient(&bao.Config{Address: "http://127.0.0.1:" + strings.TrimSpace(string(output)), Timeout: 5 * time.Second})
+	if err != nil {
+		t.Fatal("隔离 Bao client 构造失败")
+	}
+	backend.SetToken(token)
+	for {
+		if _, err := backend.Sys().HealthWithContext(ctx); err == nil {
+			break
+		}
+		select {
+		case <-ctx.Done():
+			t.Fatal("隔离 Bao 健康检查超时")
+		case <-time.After(100 * time.Millisecond):
+		}
+	}
+	store, err := openbao.NewCredentials(backend, "secret", "applications")
+	if err != nil {
+		t.Fatal(err)
+	}
+	return store
+}
+
+func (f *provisioningFixture) bound(t *testing.T, name string) *databasev1alpha1.PostgreSQLDatabase {
+	t.Helper()
+	tenant := &databasev1alpha1.PostgreSQLTenant{Name: strings.ReplaceAll(name, "_", "-"), Namespace: controllerNamespace,
+		Spec: databasev1alpha1.PostgreSQLTenantSpec{Provision: &databasev1alpha1.DatabaseProvisionRequest{
+			InstanceRef: databasev1alpha1.InstanceReference{Name: "supply-instance"},
+			Database:    databasev1alpha1.PostgreSQLIdentifier(name), LoginRole: databasev1alpha1.PostgreSQLIdentifier(name),
+		}}}
+	if err := f.api.Create(f.ctx, tenant); err != nil {
+		t.Fatal(err)
+	}
+	resources := &kubernetes.BindingResources{Client: f.api, Reader: f.api}
+	binder := databasecontroller.NewBindingReconciler(f.api, &application.BindingService{Resources: resources}, resources)
+	if _, err := binder.Reconcile(f.ctx, ctrl.Request{NamespacedName: client.ObjectKeyFromObject(tenant)}); err != nil {
+		t.Fatal(err)
+	}
+	if err := f.api.Get(f.ctx, client.ObjectKeyFromObject(tenant), tenant); err != nil {
+		t.Fatal(err)
+	}
+	database := &databasev1alpha1.PostgreSQLDatabase{}
+	if err := f.api.Get(f.ctx, client.ObjectKey{Name: string(tenant.Status.DatabaseRef.Name)}, database); err != nil {
+		t.Fatal(err)
+	}
+	prepare := application.CredentialPreparation{Resources: &kubernetes.CredentialResources{Client: f.api, Reader: f.api}, Store: f.store}
+	if err := prepare.Reconcile(f.ctx, database.Name); err != nil {
+		t.Fatal(err)
+	}
+	return database
+}
+
+func (f *provisioningFixture) reconcile(t *testing.T, database *databasev1alpha1.PostgreSQLDatabase, phase provisioning.Phase) {
+	t.Helper()
+	if err := f.usecase.Reconcile(f.ctx, database.Name); err != nil {
+		t.Fatal(err)
+	}
+	f.status(t, database, phase)
+}
+
+func (f *provisioningFixture) status(t *testing.T, database *databasev1alpha1.PostgreSQLDatabase, phase provisioning.Phase) {
+	t.Helper()
+	if err := f.api.Get(f.ctx, client.ObjectKeyFromObject(database), database); err != nil {
+		t.Fatal(err)
+	}
+	condition := meta.FindStatusCondition(database.Status.Conditions, "ResourcesReady")
+	if condition == nil || condition.Reason != string(phase) {
+		t.Fatalf("期望资源阶段 %s，实际 %v", phase, condition)
+	}
+	if meta.IsStatusConditionTrue(database.Status.Conditions, "Ready") {
+		t.Fatal("角色建库不代表扩展与交付完成")
+	}
+}

internal/database/adapter/postgresql/provisioning_integration_test.go

@@ -0,0 +1,243 @@
+//go:build integration
+
+package postgresql_test
+
+import (
+	"context"
+	"errors"
+	"sync"
+	"sync/atomic"
+	"testing"
+
+	"git.ddupan.top/panxiao81/ayatori/internal/database/application"
+	"git.ddupan.top/panxiao81/ayatori/internal/database/domain/credential"
+	"git.ddupan.top/panxiao81/ayatori/internal/database/domain/instance"
+	"git.ddupan.top/panxiao81/ayatori/internal/database/domain/provisioning"
+	"github.com/jackc/pgx/v5"
+	apierrors "k8s.io/apimachinery/pkg/api/errors"
+)
+
+func testProvisioningLogin(t *testing.T, f *provisioningFixture) {
+	t.Helper()
+	database := f.bound(t, "supplied")
+	f.reconcile(t, database, provisioning.Pending)
+	if database.Status.RoleOID == 0 || database.Status.DatabaseOID != 0 {
+		t.Fatal("角色确认未独立保存")
+	}
+	f.service.Forget("supply-instance")
+	f.reconcile(t, database, provisioning.Pending)
+	if database.Status.DatabaseOID == 0 {
+		t.Fatal("数据库未独立确认")
+	}
+	if got := f.queryPostgres(t, "SELECT datallowconn FROM pg_database WHERE datname='supplied'"); got != "f" {
+		t.Fatal("ACL 收紧前连接入口应关闭")
+	}
+	f.reconcile(t, database, provisioning.Available)
+	beforeRole, beforeDB := database.Status.RoleOID, database.Status.DatabaseOID
+	for range 2 {
+		f.reconcile(t, database, provisioning.Available)
+	}
+	if beforeRole != database.Status.RoleOID || beforeDB != database.Status.DatabaseOID {
+		t.Fatal("幂等协调替换了对象")
+	}
+	value, err := f.store.ReadCredential(f.ctx, credential.Location{Mount: database.Status.CredentialRef.Mount, Path: database.Status.CredentialRef.Path}, database.Status.CredentialVersion)
+	if err != nil {
+		t.Fatal(err)
+	}
+	config, err := pgx.ParseConfig("")
+	if err != nil {
+		t.Fatal("fixture 配置失败")
+	}
+	config.Host, config.Port = fixtureAddress, uint16(f.port)
+	config.User, config.Database, config.Password = "supplied", "supplied", value.SecretData()["password"].(string)
+	config.TLSConfig, config.Fallbacks = nil, nil
+	connection, err := pgx.ConnectConfig(f.ctx, config)
+	if err != nil {
+		t.Fatal("实际应用密码不能登录已供应数据库")
+	}
+	defer func() { _ = connection.Close(context.Background()) }()
+	if _, err := connection.Exec(f.ctx, "CREATE TABLE app_data (id integer)"); err != nil {
+		t.Fatal("应用 owner 不能创建表")
+	}
+	if _, err := connection.Exec(f.ctx, "CREATE ROLE should_be_denied"); err == nil {
+		t.Fatal("应用具有 CREATEROLE")
+	}
+	if _, err := connection.Exec(f.ctx, "CREATE DATABASE should_be_denied"); err == nil {
+		t.Fatal("应用具有 CREATEDB")
+	}
+	f.queryPostgres(t, "CREATE ROLE unrelated_login LOGIN PASSWORD '"+fixturePassword+"'")
+	config.User, config.Password = "unrelated_login", fixturePassword
+	if outsider, err := pgx.ConnectConfig(f.ctx, config); err == nil {
+		_ = outsider.Close(f.ctx)
+		t.Fatal("其他账号可连接受管数据库")
+	}
+}
+
+func TestDatabaseProvisioningWithRealBackends(t *testing.T) {
+	f := newProvisioningFixture(t)
+	t.Run("创建重启幂等与实际登录", func(t *testing.T) { testProvisioningLogin(t, f) })
+	t.Run("未知同名不认领", func(t *testing.T) {
+		database := f.bound(t, "occupied")
+		f.queryPostgres(t, "CREATE ROLE occupied LOGIN")
+		before := f.queryPostgres(t, "SELECT oid FROM pg_roles WHERE rolname='occupied'")
+		f.reconcile(t, database, provisioning.Conflict)
+		f.reconcile(t, database, provisioning.Conflict)
+		if database.Status.RoleOID != 0 || f.queryPostgres(t, "SELECT oid FROM pg_roles WHERE rolname='occupied'") != before {
+			t.Fatal("未知角色被认领或修改")
+		}
+	})
+	t.Run("未知同名数据库不认领", func(t *testing.T) {
+		database := f.bound(t, "occupied_database")
+		f.queryPostgres(t, "CREATE DATABASE occupied_database")
+		before := f.queryPostgres(t, "SELECT oid FROM pg_database WHERE datname='occupied_database'")
+		f.reconcile(t, database, provisioning.Conflict)
+		if database.Status.RoleOID != 0 || database.Status.DatabaseOID != 0 ||
+			f.queryPostgres(t, "SELECT oid FROM pg_database WHERE datname='occupied_database'") != before ||
+			f.queryPostgres(t, "SELECT count(*) FROM pg_roles WHERE rolname='occupied_database'") != "0" {
+			t.Fatal("未知数据库被认领、修改或继续创建了角色")
+		}
+	})
+	t.Run("已确认角色后权限恢复", func(t *testing.T) {
+		database := f.bound(t, "permission_restore")
+		f.reconcile(t, database, provisioning.Pending)
+		f.queryPostgres(t, "ALTER ROLE native_manager NOCREATEDB")
+		f.reconcile(t, database, provisioning.Unavailable)
+		f.queryPostgres(t, "ALTER ROLE native_manager CREATEDB")
+		f.reconcile(t, database, provisioning.Pending)
+		f.reconcile(t, database, provisioning.Available)
+	})
+	t.Run("删除前置阻止写入", func(t *testing.T) {
+		database := f.bound(t, "deleting_supply")
+		if err := f.api.Delete(f.ctx, database); err != nil {
+			t.Fatal(err)
+		}
+		f.reconcile(t, database, provisioning.Stopped)
+		if len(database.Finalizers) == 0 || database.Status.RoleOID != 0 {
+			t.Fatal("删除边界被供应绕过")
+		}
+	})
+	t.Run("确认保存失败转人工冲突", func(t *testing.T) {
+		database := f.bound(t, "lost_confirmation")
+		failed := f.usecase
+		failed.Resources = &failRoleConfirmation{ProvisioningResources: f.resources}
+		if err := failed.Reconcile(f.ctx, database.Name); err == nil {
+			t.Fatal("未注入确认写入故障")
+		}
+		f.reconcile(t, database, provisioning.Conflict)
+		if database.Status.RoleOID != 0 || f.queryPostgres(t, "SELECT count(*) FROM pg_roles WHERE rolname='lost_confirmation'") != "1" {
+			t.Fatal("失败恢复认领或清理了残留角色")
+		}
+	})
+	t.Run("数据库确认失败保留关闭入口", func(t *testing.T) {
+		database := f.bound(t, "lost_database_confirmation")
+		f.reconcile(t, database, provisioning.Pending)
+		failed := f.usecase
+		failed.Resources = &failDatabaseConfirmation{ProvisioningResources: f.resources}
+		if err := failed.Reconcile(f.ctx, database.Name); err == nil {
+			t.Fatal("未注入数据库确认写入故障")
+		}
+		f.reconcile(t, database, provisioning.Conflict)
+		if database.Status.RoleOID == 0 || database.Status.DatabaseOID != 0 || f.queryPostgres(t, "SELECT datallowconn FROM pg_database WHERE datname='lost_database_confirmation'") != "f" {
+			t.Fatal("未确认数据库被认领或开放连接")
+		}
+	})
+	t.Run("创建成功但调用方丢失结果", func(t *testing.T) {
+		database := f.bound(t, "lost_role_response")
+		failed := f.usecase
+		failed.Backend = &lostRoleResponse{ProvisioningBackend: f.service}
+		if err := failed.Reconcile(f.ctx, database.Name); err != nil {
+			t.Fatal(err)
+		}
+		f.reconcile(t, database, provisioning.Conflict)
+		if database.Status.RoleOID != 0 || f.queryPostgres(t, "SELECT count(*) FROM pg_roles WHERE rolname='lost_role_response'") != "1" {
+			t.Fatal("丢失结果后应保留未认领角色")
+		}
+	})
+	t.Run("同名角色被重建", func(t *testing.T) {
+		database := f.bound(t, "replaced_role")
+		f.reconcile(t, database, provisioning.Pending)
+		f.queryPostgres(t, "DROP ROLE replaced_role; CREATE ROLE replaced_role LOGIN")
+		f.reconcile(t, database, provisioning.Conflict)
+		if database.Status.DatabaseOID != 0 {
+			t.Fatal("重建角色被当成原 owner 继续供应")
+		}
+	})
+	t.Run("创建步骤并发只有一个获准", func(t *testing.T) {
+		database := f.bound(t, "concurrent_supply")
+		service := f.usecase
+		resources := &concurrentProvisioningResources{ProvisioningResources: f.resources}
+		resources.loaded.Add(2)
+		service.Resources = resources
+		results := make(chan error, 2)
+		for range 2 {
+			go func() { results <- service.Reconcile(f.ctx, database.Name) }()
+		}
+		success, conflict := 0, 0
+		for range 2 {
+			err := <-results
+			if err == nil {
+				success++
+			} else if apierrors.IsConflict(err) {
+				conflict++
+			} else {
+				t.Fatal(err)
+			}
+		}
+		if success != 1 || conflict != 1 {
+			t.Fatal("同一快照不得重复授权创建")
+		}
+		f.status(t, database, provisioning.Pending)
+		if database.Status.RoleOID == 0 {
+			t.Fatal("胜方未确认角色")
+		}
+	})
+	t.Run("实际manager观察与重启", func(t *testing.T) { testProvisioningManager(t, f) })
+}
+
+type failRoleConfirmation struct {
+	application.ProvisioningResources
+}
+
+func (r *failRoleConfirmation) Save(ctx context.Context, record *application.ProvisioningRecord, state provisioning.State) (*application.ProvisioningRecord, error) {
+	if state.RoleOID != 0 {
+		return nil, errors.New("injected confirmation persistence failure")
+	}
+	return r.ProvisioningResources.Save(ctx, record, state)
+}
+
+type failDatabaseConfirmation struct {
+	application.ProvisioningResources
+}
+
+func (r *failDatabaseConfirmation) Save(ctx context.Context, record *application.ProvisioningRecord, state provisioning.State) (*application.ProvisioningRecord, error) {
+	if state.DatabaseOID != 0 {
+		return nil, errors.New("injected database confirmation persistence failure")
+	}
+	return r.ProvisioningResources.Save(ctx, record, state)
+}
+
+type lostRoleResponse struct {
+	application.ProvisioningBackend
+}
+
+func (b *lostRoleResponse) CreateLoginRole(ctx context.Context, target instance.ObservationTarget, value credential.ApplicationCredential) (uint32, error) {
+	if _, err := b.ProvisioningBackend.CreateLoginRole(ctx, target, value); err != nil {
+		return 0, err
+	}
+	return 0, application.ErrResourceUncertain
+}
+
+type concurrentProvisioningResources struct {
+	application.ProvisioningResources
+	readers atomic.Int32
+	loaded  sync.WaitGroup
+}
+
+func (r *concurrentProvisioningResources) Load(ctx context.Context, name string) (*application.ProvisioningRecord, error) {
+	record, err := r.ProvisioningResources.Load(ctx, name)
+	if r.readers.Add(1) <= 2 {
+		r.loaded.Done()
+		r.loaded.Wait()
+	}
+	return record, err
+}

internal/database/adapter/postgresql/provisioning_watch_integration_test.go

@@ -0,0 +1,97 @@
+//go:build integration
+
+package postgresql_test
+
+import (
+	"context"
+	"sync/atomic"
+	"testing"
+	"time"
+
+	"git.ddupan.top/panxiao81/ayatori/internal/database/adapter/kubernetes"
+	"git.ddupan.top/panxiao81/ayatori/internal/database/application"
+	databasecontroller "git.ddupan.top/panxiao81/ayatori/internal/database/controller"
+	"git.ddupan.top/panxiao81/ayatori/internal/database/domain/instance"
+	"git.ddupan.top/panxiao81/ayatori/internal/database/domain/provisioning"
+	"k8s.io/apimachinery/pkg/api/meta"
+	ctrl "sigs.k8s.io/controller-runtime"
+	"sigs.k8s.io/controller-runtime/pkg/client"
+	controllerconfig "sigs.k8s.io/controller-runtime/pkg/config"
+	metricsserver "sigs.k8s.io/controller-runtime/pkg/metrics/server"
+)
+
+func testProvisioningManager(t *testing.T, f *provisioningFixture) {
+	t.Helper()
+	database := f.bound(t, "watch_supply")
+	// 首次 list/watch 自动供应；第二个新 manager 只观察确认记录，不重新建库。
+	var roleOID, databaseOID int64
+	for range 2 {
+		skipRepeatedName := true
+		manager, err := ctrl.NewManager(f.config, ctrl.Options{Scheme: f.scheme, Metrics: metricsserver.Options{BindAddress: "0"}, HealthProbeBindAddress: "0",
+			Controller: controllerconfig.Controller{SkipNameValidation: &skipRepeatedName}})
+		if err != nil {
+			t.Fatal(err)
+		}
+		resources := &kubernetes.ProvisioningResources{Client: manager.GetClient(), Reader: manager.GetAPIReader()}
+		backend := &countProvisioningObservations{ProvisioningBackend: f.service}
+		service := &application.DatabaseReconciliation{
+			Credentials:  &application.CredentialPreparation{Resources: &kubernetes.CredentialResources{Client: manager.GetClient(), Reader: manager.GetAPIReader()}, Store: f.store},
+			Provisioning: &application.DatabaseProvisioning{Resources: resources, Credentials: f.store, Backend: backend},
+		}
+		if err := databasecontroller.NewProvisioningReconciler(manager.GetClient(), service).SetupWithManager(manager); err != nil {
+			t.Fatal(err)
+		}
+		ctx, stop := context.WithCancel(f.ctx)
+		done := make(chan error, 1)
+		go func() { done <- manager.Start(ctx) }()
+		// 使用 scope 确保任何失败都先停止 worker，再由 fixture 关闭共享连接。
+		func() {
+			defer func() {
+				stop()
+				select {
+				case err := <-done:
+					if err != nil {
+						t.Error(err)
+					}
+				case <-time.After(10 * time.Second):
+					t.Error("供应 manager 未停止")
+				}
+			}()
+			if !manager.GetCache().WaitForCacheSync(ctx) {
+				t.Fatal("供应 cache 未同步")
+			}
+			deadline := time.After(15 * time.Second)
+			for {
+				if err := f.api.Get(f.ctx, client.ObjectKeyFromObject(database), database); err != nil {
+					t.Fatal(err)
+				}
+				if meta.IsStatusConditionTrue(database.Status.Conditions, "ResourcesReady") && backend.reads.Load() > 0 {
+					break
+				}
+				select {
+				case <-deadline:
+					t.Fatal("watch 未推动资源创建")
+				case <-time.After(100 * time.Millisecond):
+				}
+			}
+			if roleOID != 0 && (roleOID != database.Status.RoleOID || databaseOID != database.Status.DatabaseOID) {
+				t.Fatal("manager 重启替换已确认资源")
+			}
+			roleOID, databaseOID = database.Status.RoleOID, database.Status.DatabaseOID
+		}()
+	}
+	f.status(t, database, provisioning.Available)
+}
+
+type countProvisioningObservations struct {
+	application.ProvisioningBackend
+	reads atomic.Int32
+}
+
+func (b *countProvisioningObservations) InspectResources(ctx context.Context, target instance.ObservationTarget, name, role string) (provisioning.Observation, error) {
+	observation, err := b.ProvisioningBackend.InspectResources(ctx, target, name, role)
+	if err == nil && name == "watch_supply" {
+		b.reads.Add(1)
+	}
+	return observation, err
+}

internal/database/adapter/postgresql/resources.go

@@ -0,0 +1,159 @@
+package postgresql
+
+import (
+	"context"
+	"errors"
+	"regexp"
+
+	"git.ddupan.top/panxiao81/ayatori/internal/database/application"
+	"git.ddupan.top/panxiao81/ayatori/internal/database/domain/credential"
+	"git.ddupan.top/panxiao81/ayatori/internal/database/domain/provisioning"
+	"github.com/jackc/pgx/v5"
+	"github.com/jackc/pgx/v5/pgconn"
+)
+
+var resourceIdentifier = regexp.MustCompile(`^[a-z][a-z0-9_]{0,62}$`)
+
+const inspectResourcesSQL = `
+SELECT COALESCE(r.oid, 0), COALESCE(d.oid, 0),
+ COALESCE(r.rolcanlogin AND NOT (r.rolsuper OR r.rolcreatedb OR r.rolcreaterole OR r.rolreplication OR r.rolbypassrls)
+ AND NOT EXISTS (SELECT FROM pg_catalog.pg_auth_members m WHERE m.member = r.oid), false),
+ COALESCE(d.datdba, 0), COALESCE(d.datallowconn, false),
+ EXISTS (SELECT FROM pg_catalog.aclexplode(COALESCE(d.datacl, pg_catalog.acldefault('d', d.datdba))) a
+         WHERE a.grantee = 0 AND a.privilege_type = 'CONNECT')
+FROM (SELECT 1) seed
+LEFT JOIN pg_catalog.pg_roles r ON r.rolname = $1
+LEFT JOIN pg_catalog.pg_database d ON d.datname = $2`
+
+type resourceReader interface {
+	QueryRow(context.Context, string, ...any) pgx.Row
+}
+
+func inspectResources(ctx context.Context, reader resourceReader, name, role string) (provisioning.Observation, error) {
+	var result provisioning.Observation
+	if !resourceIdentifier.MatchString(name) || !resourceIdentifier.MatchString(role) {
+		return result, application.ErrResourceConflict
+	}
+	err := reader.QueryRow(ctx, inspectResourcesSQL, role, name).Scan(
+		&result.RoleOID, &result.DatabaseOID, &result.RoleSafe, &result.OwnerOID, &result.AllowConnections, &result.PublicConnect,
+	)
+	if err != nil {
+		return provisioning.Observation{}, application.ErrResourceUnavailable
+	}
+	return result, nil
+}
+
+func (d *database) InspectResources(ctx context.Context, name, role string) (provisioning.Observation, error) {
+	return inspectResources(ctx, d.pool, name, role)
+}
+
+// CREATE ROLE 与 membership 在一个原生事务提交；不修改任何已有角色。
+// simple protocol 使用 pgx 的参数转义，避免自行拼接密码字面量；错误不带 SQL 或驱动响应。
+func (d *database) CreateLoginRole(ctx context.Context, value credential.ApplicationCredential) (uint32, error) {
+	if value.Validate() != nil {
+		return 0, application.ErrResourceConflict
+	}
+	data := value.SecretData()
+	role := data["username"].(string)
+	transaction, err := d.pool.Begin(ctx)
+	if err != nil {
+		return 0, application.ErrResourceUnavailable
+	}
+	defer func() { _ = transaction.Rollback(ctx) }()
+	statement := "CREATE ROLE " + pgx.Identifier{role}.Sanitize() + " LOGIN NOSUPERUSER NOCREATEDB NOCREATEROLE NOREPLICATION NOBYPASSRLS NOINHERIT PASSWORD $1"
+	if _, err := transaction.Exec(ctx, statement, pgx.QueryExecModeSimpleProtocol, data["password"]); err != nil {
+		return 0, creationError(err)
+	}
+	if _, err := transaction.Exec(ctx, "GRANT "+pgx.Identifier{role}.Sanitize()+" TO CURRENT_USER WITH SET TRUE, INHERIT FALSE"); err != nil {
+		return 0, application.ErrResourceUncertain
+	}
+	var oid uint32
+	if err := transaction.QueryRow(ctx, "SELECT oid FROM pg_catalog.pg_roles WHERE rolname=$1", role).Scan(&oid); err != nil {
+		return 0, application.ErrResourceUncertain
+	}
+	if err := transaction.Commit(ctx); err != nil {
+		return 0, application.ErrResourceUncertain
+	}
+	observed, err := d.InspectResources(ctx, data["database"].(string), role)
+	if err != nil || observed.RoleOID != oid || !observed.RoleSafe {
+		return 0, application.ErrResourceUncertain
+	}
+	return oid, nil
+}
+
+func (d *database) CreateOwnedDatabase(ctx context.Context, name, role string, roleOID uint32) (uint32, error) {
+	observed, err := d.InspectResources(ctx, name, role)
+	if err != nil {
+		return 0, err
+	}
+	if roleOID == 0 || observed.RoleOID != roleOID || !observed.RoleSafe || observed.DatabaseOID != 0 {
+		return 0, application.ErrResourceConflict
+	}
+	// 不能放入事务。先关闭连接入口，避免默认 PUBLIC CONNECT 暴露未收紧的数据库。
+	statement := "CREATE DATABASE " + pgx.Identifier{name}.Sanitize() + " OWNER " + pgx.Identifier{role}.Sanitize() + " ALLOW_CONNECTIONS false"
+	if _, err := d.pool.Exec(ctx, statement); err != nil {
+		return 0, creationError(err)
+	}
+	observed, err = d.InspectResources(ctx, name, role)
+	if err != nil || observed.DatabaseOID == 0 || observed.OwnerOID != roleOID || observed.RoleOID != roleOID {
+		return 0, application.ErrResourceUncertain
+	}
+	return observed.DatabaseOID, nil
+}
+
+func (d *database) ConfigureAccess(ctx context.Context, name, role string, state provisioning.State) error {
+	transaction, err := d.pool.Begin(ctx)
+	if err != nil {
+		return application.ErrResourceUnavailable
+	}
+	defer func() { _ = transaction.Rollback(ctx) }()
+	observed, err := inspectResources(ctx, transaction, name, role)
+	if err != nil {
+		return err
+	}
+	if state.RoleOID == 0 || state.DatabaseOID == 0 || state.Check(observed) != nil {
+		return application.ErrResourceConflict
+	}
+	if _, err := transaction.Exec(ctx, "SET LOCAL ROLE "+pgx.Identifier{role}.Sanitize()); err != nil {
+		return application.ErrResourceUnavailable
+	}
+	for _, statement := range []string{
+		"REVOKE CONNECT ON DATABASE " + pgx.Identifier{name}.Sanitize() + " FROM PUBLIC",
+		"GRANT CONNECT ON DATABASE " + pgx.Identifier{name}.Sanitize() + " TO " + pgx.Identifier{role}.Sanitize(),
+		"ALTER DATABASE " + pgx.Identifier{name}.Sanitize() + " ALLOW_CONNECTIONS true",
+	} {
+		if _, err := transaction.Exec(ctx, statement); err != nil {
+			return application.ErrResourceUnavailable
+		}
+	}
+	// SET LOCAL 不污染池内连接；ACL 失败可在已确认对象上幂等重试，不改密码或 owner。
+	if err := transaction.Commit(ctx); err != nil {
+		return application.ErrResourceUnavailable
+	}
+	observed, err = d.InspectResources(ctx, name, role)
+	if err != nil {
+		return err
+	}
+	if state.Check(observed) != nil {
+		return application.ErrResourceConflict
+	}
+	if observed.PublicConnect || !observed.AllowConnections {
+		return application.ErrResourceUnavailable
+	}
+	return nil
+}
+
+func creationError(err error) error {
+	if serverError, ok := errors.AsType[*pgconn.PgError](err); ok {
+		switch serverError.Code {
+		case "42710", "42P04", "23505":
+			return application.ErrResourceConflict
+		case "42501", "25006", "28P01", "28000":
+			return application.ErrResourceUnavailable
+		}
+	}
+	if pgconn.SafeToRetry(err) {
+		return application.ErrResourceUnavailable
+	}
+	return application.ErrResourceUncertain
+}

internal/database/adapter/postgresql/resources_test.go

@@ -0,0 +1,35 @@
+package postgresql
+
+import (
+	"errors"
+	"testing"
+
+	"git.ddupan.top/panxiao81/ayatori/internal/database/application"
+	"github.com/jackc/pgx/v5/pgconn"
+)
+
+func TestCreationErrorsDoNotExposeServerDetails(t *testing.T) {
+	for _, test := range []struct {
+		code string
+		want error
+	}{
+		{"42710", application.ErrResourceConflict},
+		{"42P04", application.ErrResourceConflict},
+		{"23505", application.ErrResourceConflict},
+		{"42501", application.ErrResourceUnavailable},
+		{"25006", application.ErrResourceUnavailable},
+		{"57014", application.ErrResourceUncertain},
+		{"XX000", application.ErrResourceUncertain},
+	} {
+		actual := creationError(&pgconn.PgError{Code: test.code, Message: "unsafe SQL and credential detail"})
+		if !errors.Is(actual, test.want) {
+			t.Fatalf("SQLSTATE %s 分类错误", test.code)
+		}
+		if actual.Error() != test.want.Error() {
+			t.Fatal("后端错误携带原始响应")
+		}
+	}
+	if !errors.Is(creationError(errors.New("connection lost after send")), application.ErrResourceUncertain) {
+		t.Fatal("未知网络结果不允许自动重试创建")
+	}
+}

internal/database/application/database_provisioning.go

@@ -0,0 +1,152 @@
+package application
+
+import (
+	"context"
+	"errors"
+	"fmt"
+
+	"git.ddupan.top/panxiao81/ayatori/internal/database/domain/credential"
+	"git.ddupan.top/panxiao81/ayatori/internal/database/domain/instance"
+	"git.ddupan.top/panxiao81/ayatori/internal/database/domain/provisioning"
+)
+
+type ProvisioningRecord struct {
+	credential.Target
+	Revision           string
+	TenantGeneration   int64
+	InstanceGeneration int64
+	InstanceTarget     instance.ObservationTarget
+	Credentials        credential.State
+	State              provisioning.State
+}
+
+type ProvisioningResources interface {
+	Load(context.Context, string) (*ProvisioningRecord, error)
+	Save(context.Context, *ProvisioningRecord, provisioning.State) (*ProvisioningRecord, error)
+	CheckCurrent(context.Context, *ProvisioningRecord) error
+}
+
+type DatabaseProvisioning struct {
+	Resources   ProvisioningResources
+	Credentials CredentialStore
+	Backend     ProvisioningBackend
+}
+
+func (s DatabaseProvisioning) Reconcile(ctx context.Context, name string) error {
+	record, err := s.Resources.Load(ctx, name)
+	if err != nil || record == nil || !record.RequiresPreparation() {
+		return err
+	}
+	if state, resume := record.State.Resume(); !resume {
+		if state == record.State {
+			return nil
+		}
+		_, err := s.Resources.Save(ctx, record, state)
+		return err
+	}
+	if issue := record.Check(); issue != nil {
+		phase := provisioning.Unavailable
+		if issue.Phase == credential.Conflict {
+			phase = provisioning.Conflict
+		}
+		if issue.Phase == credential.Stopped {
+			phase = provisioning.Stopped
+		}
+		return s.report(ctx, record, phase, issue.Message)
+	}
+	if !record.Credentials.Confirmed() || record.Credentials.Location == nil || record.Credentials.Phase != credential.Prepared {
+		return s.report(ctx, record, provisioning.Unavailable, "等待已确认且当前可用的应用凭据")
+	}
+	value, err := s.Credentials.ReadCredential(ctx, *record.Credentials.Location, record.Credentials.Version)
+	if err != nil {
+		return s.report(ctx, record, provisioning.Unavailable, "无法读取已确认凭据；未执行 PostgreSQL 写入")
+	}
+	if issue := record.CheckCredential(value); issue != nil {
+		return s.report(ctx, record, provisioning.Conflict, issue.Message)
+	}
+	observed, err := s.Backend.InspectResources(ctx, record.InstanceTarget, record.Database.Name, record.Database.LoginRole)
+	if err != nil {
+		return s.report(ctx, record, provisioning.Unavailable, "无法验证当前 PostgreSQL 资源和管理权限")
+	}
+	if err := record.State.Check(observed); err != nil {
+		return s.report(ctx, record, provisioning.Conflict, err.Error()+"；请人工核对，未认领或覆盖")
+	}
+	if err := s.Resources.CheckCurrent(ctx, record); err != nil {
+		return err
+	}
+	if record.State.RoleOID == 0 {
+		return s.createRole(ctx, record, value)
+	}
+	if record.State.DatabaseOID == 0 {
+		return s.createDatabase(ctx, record)
+	}
+	if err := s.Backend.ConfigureAccess(ctx, record.InstanceTarget, record.Database.Name, record.Database.LoginRole, record.State); err != nil {
+		return s.backendFailure(ctx, record, err, "数据库访问权限收敛")
+	}
+	if err := s.Resources.CheckCurrent(ctx, record); err != nil {
+		return err
+	}
+	return s.report(ctx, record, provisioning.Available, "角色和数据库已确认，PUBLIC CONNECT 已撤销；扩展与 Tenant 交付尚未完成")
+}
+
+func (s DatabaseProvisioning) createRole(ctx context.Context, record *ProvisioningRecord, value credential.ApplicationCredential) error {
+	record, err := s.Resources.Save(ctx, record, record.State.WithPhase(provisioning.CreatingRole, "开始创建登录角色；尚未持久确认"))
+	if err != nil {
+		return err
+	}
+	if err := s.Resources.CheckCurrent(ctx, record); err != nil {
+		return err
+	}
+	oid, err := s.Backend.CreateLoginRole(ctx, record.InstanceTarget, value)
+	if err != nil {
+		return s.backendFailure(ctx, record, err, "登录角色创建")
+	}
+	if oid == 0 {
+		return s.backendFailure(ctx, record, ErrResourceUncertain, "登录角色创建")
+	}
+	if err := s.Resources.CheckCurrent(ctx, record); err != nil {
+		return err
+	}
+	state := record.State.WithPhase(provisioning.Pending, "登录角色已创建并回读，等待创建数据库")
+	state.RoleOID = oid
+	_, err = s.Resources.Save(ctx, record, state)
+	return err
+}
+
+func (s DatabaseProvisioning) createDatabase(ctx context.Context, record *ProvisioningRecord) error {
+	record, err := s.Resources.Save(ctx, record, record.State.WithPhase(provisioning.CreatingDatabase, "开始创建数据库；尚未持久确认"))
+	if err != nil {
+		return err
+	}
+	if err := s.Resources.CheckCurrent(ctx, record); err != nil {
+		return err
+	}
+	oid, err := s.Backend.CreateOwnedDatabase(ctx, record.InstanceTarget, record.Database.Name, record.Database.LoginRole, record.State.RoleOID)
+	if err != nil {
+		return s.backendFailure(ctx, record, err, "数据库创建")
+	}
+	if oid == 0 {
+		return s.backendFailure(ctx, record, ErrResourceUncertain, "数据库创建")
+	}
+	if err := s.Resources.CheckCurrent(ctx, record); err != nil {
+		return err
+	}
+	state := record.State.WithPhase(provisioning.Pending, "数据库已创建并回读，等待收紧访问权限；连接入口仍关闭")
+	state.DatabaseOID = oid
+	_, err = s.Resources.Save(ctx, record, state)
+	return err
+}
+
+func (s DatabaseProvisioning) backendFailure(ctx context.Context, record *ProvisioningRecord, err error, step string) error {
+	if errors.Is(err, ErrResourceUnavailable) {
+		return s.report(ctx, record, provisioning.Unavailable, step+"被拒绝或暂不可用，保留已确认步骤并等待依赖恢复")
+	}
+	return s.report(ctx, record, provisioning.Conflict, step+"冲突或结果不确定；请核对目标与已确认 OID，未自动认领、改密或清理")
+}
+
+func (s DatabaseProvisioning) report(ctx context.Context, record *ProvisioningRecord, phase provisioning.Phase, message string) error {
+	message = fmt.Sprintf("Database %s / Instance %s / database %s / role %s：%s", record.Database.Identity.Name,
+		record.Database.Instance, record.Database.Name, record.Database.LoginRole, message)
+	_, err := s.Resources.Save(ctx, record, record.State.WithPhase(phase, message))
+	return err
+}

internal/database/application/database_reconciliation.go

@@ -0,0 +1,17 @@
+package application
+
+import "context"
+
+// DatabaseReconciliation 顺序编排两个已有用例，不复制它们的领域判断。
+// 启用资源创建时由同一个 controller 驱动，避免两个 worker 争写同一 Database status。
+type DatabaseReconciliation struct {
+	Credentials  *CredentialPreparation
+	Provisioning *DatabaseProvisioning
+}
+
+func (s DatabaseReconciliation) Reconcile(ctx context.Context, name string) error {
+	if err := s.Credentials.Reconcile(ctx, name); err != nil {
+		return err
+	}
+	return s.Provisioning.Reconcile(ctx, name)
+}

internal/database/application/instance_service.go

@@ -35,6 +35,7 @@ var (
 // Database 与 Connector 复用原项目 internal/instance/service.go 的能力边界。
 // Metadata 只查询版本与可用扩展，不能产生领域 Ready。
 type Database interface {
+	ResourceDatabase
 	InspectMetadata(context.Context) (DatabaseMetadata, error)
 	InspectManagement(context.Context) (DatabaseMetadata, error)
 	Close()
@@ -93,16 +94,45 @@ func (s *InstanceService) ObserveManagement(ctx context.Context, target instance
 }
 
 func (s *InstanceService) observe(ctx context.Context, target instance.ObservationTarget, management bool) (InstanceObservation, error) {
-	if err := target.Validate(); err != nil {
-		return InstanceObservation{}, err
-	}
 	s.mu.Lock()
 	defer s.mu.Unlock()
+	current, err := s.connection(ctx, target)
+	if err != nil {
+		return InstanceObservation{}, err
+	}
+	name := target.Identity().Name()
+	var metadata DatabaseMetadata
+	if management {
+		metadata, err = current.database.InspectManagement(ctx)
+	} else {
+		metadata, err = current.database.InspectMetadata(ctx)
+		metadata.Management = instance.ManagementChecks{}
+	}
+	if err != nil {
+		s.release(name)
+		return InstanceObservation{}, err
+	}
+	if metadata.Version == "" {
+		s.release(name)
+		return InstanceObservation{}, ErrObservation
+	}
+	if err := s.checkCredentials(ctx, target, current.credentials); err != nil {
+		return InstanceObservation{}, err
+	}
+	return InstanceObservation{target: target, version: metadata.Version,
+		extensions: instance.ObserveExtensionSupport(metadata.AvailableExtensions), management: metadata.Management}, nil
+}
+
+// connection 由持有 mu 的调用者使用；不缓存观察结果或管理权限。
+func (s *InstanceService) connection(ctx context.Context, target instance.ObservationTarget) (*entry, error) {
+	if err := target.Validate(); err != nil {
+		return nil, err
+	}
 	if s.closed {
-		return InstanceObservation{}, ErrClosed
+		return nil, ErrClosed
 	}
 	if err := ctx.Err(); err != nil {
-		return InstanceObservation{}, err
+		return nil, err
 	}
 
 	// 先读取有效凭据。读取失败时不得继续使用缓存中的旧连接。
@@ -110,11 +140,11 @@ func (s *InstanceService) observe(ctx context.Context, target instance.Observati
 	credentials, err := s.source.Read(ctx, target.Definition().AdminCredential())
 	if err != nil {
 		s.release(name)
-		return InstanceObservation{}, credentialError(err)
+		return nil, credentialError(err)
 	}
 	if credentials.username == "" || credentials.password == "" {
 		s.release(name)
-		return InstanceObservation{}, ErrCredentialsInvalid
+		return nil, ErrCredentialsInvalid
 	}
 
 	// 连接身份与有效值均未变化时复用 pgxpool；generation 本身不要求换池。
@@ -127,7 +157,7 @@ func (s *InstanceService) observe(ctx context.Context, target instance.Observati
 	if current == nil {
 		database, err := s.connector.Connect(ctx, target.Definition().Endpoint(), credentials)
 		if err != nil {
-			return InstanceObservation{}, err
+			return nil, err
 		}
 		current = &entry{
 			target:      target,
@@ -137,39 +167,22 @@ func (s *InstanceService) observe(ctx context.Context, target instance.Observati
 		s.entries[name] = current
 	}
 
-	var metadata DatabaseMetadata
+	return current, nil
-	if management {
+}
-		metadata, err = current.database.InspectManagement(ctx)
-	} else {
-		metadata, err = current.database.InspectMetadata(ctx)
-		// 即使 adapter 误填权限，也不能把只读 metadata 入口升级为 Ready。
-		metadata.Management = instance.ManagementChecks{}
-	}
-	if err != nil {
-		s.release(name)
-		return InstanceObservation{}, err
-	}
-	if metadata.Version == "" {
-		s.release(name)
-		return InstanceObservation{}, ErrObservation
-	}
 
+func (s *InstanceService) checkCredentials(ctx context.Context, target instance.ObservationTarget, credentials Credentials) error {
+	name := target.Identity().Name()
 	// 回读后再检查凭据，避免把轮换前取得的结果交给新凭据的调用链。
 	latest, err := s.source.Read(ctx, target.Definition().AdminCredential())
 	if err != nil {
 		s.release(name)
-		return InstanceObservation{}, credentialError(err)
+		return credentialError(err)
 	}
 	if latest != credentials {
 		s.release(name)
-		return InstanceObservation{}, ErrCredentialsChanged
+		return ErrCredentialsChanged
 	}
-	return InstanceObservation{
+	return nil
-		target:     target,
-		version:    metadata.Version,
-		extensions: instance.ObserveExtensionSupport(metadata.AvailableExtensions),
-		management: metadata.Management,
-	}, nil
 }
 
 func credentialError(err error) error {

internal/database/application/instance_service_test.go

@@ -37,6 +37,7 @@ func (s *sourceStub) Read(context.Context, instance.CredentialReference) (Creden
 }
 
 type databaseStub struct {
+	ResourceDatabase
 	closes   int
 	err      error
 	metadata DatabaseMetadata

internal/database/application/provisioning_backend.go

@@ -0,0 +1,102 @@
+package application
+
+import (
+	"context"
+	"errors"
+
+	"git.ddupan.top/panxiao81/ayatori/internal/database/domain/credential"
+	"git.ddupan.top/panxiao81/ayatori/internal/database/domain/instance"
+	"git.ddupan.top/panxiao81/ayatori/internal/database/domain/provisioning"
+)
+
+var (
+	ErrResourceConflict    = errors.New("PostgreSQL resource conflict; manual resolution required")
+	ErrResourceUncertain   = errors.New("PostgreSQL creation outcome uncertain; manual resolution required")
+	ErrResourceUnavailable = errors.New("PostgreSQL operation unavailable before creation")
+)
+
+// ResourceDatabase 是供应实际需要的后端能力，不暴露 SQL 或任意回调给用例。
+type ResourceDatabase interface {
+	InspectResources(context.Context, string, string) (provisioning.Observation, error)
+	CreateLoginRole(context.Context, credential.ApplicationCredential) (uint32, error)
+	CreateOwnedDatabase(context.Context, string, string, uint32) (uint32, error)
+	ConfigureAccess(context.Context, string, string, provisioning.State) error
+}
+
+type ProvisioningBackend interface {
+	InspectResources(context.Context, instance.ObservationTarget, string, string) (provisioning.Observation, error)
+	CreateLoginRole(context.Context, instance.ObservationTarget, credential.ApplicationCredential) (uint32, error)
+	CreateOwnedDatabase(context.Context, instance.ObservationTarget, string, string, uint32) (uint32, error)
+	ConfigureAccess(context.Context, instance.ObservationTarget, string, string, provisioning.State) error
+}
+
+func (s *InstanceService) InspectResources(ctx context.Context, target instance.ObservationTarget, name, role string) (provisioning.Observation, error) {
+	var result provisioning.Observation
+	err := s.withManagementConnection(ctx, target, false, func(database Database) (err error) {
+		result, err = database.InspectResources(ctx, name, role)
+		return err
+	})
+	if err != nil {
+		return provisioning.Observation{}, err
+	}
+	return result, nil
+}
+
+func (s *InstanceService) CreateLoginRole(ctx context.Context, target instance.ObservationTarget, value credential.ApplicationCredential) (uint32, error) {
+	var oid uint32
+	err := s.withManagementConnection(ctx, target, true, func(database Database) (err error) {
+		oid, err = database.CreateLoginRole(ctx, value)
+		return err
+	})
+	if err != nil {
+		return 0, err
+	}
+	return oid, nil
+}
+
+func (s *InstanceService) CreateOwnedDatabase(ctx context.Context, target instance.ObservationTarget, name, role string, roleOID uint32) (uint32, error) {
+	var oid uint32
+	err := s.withManagementConnection(ctx, target, true, func(database Database) (err error) {
+		oid, err = database.CreateOwnedDatabase(ctx, name, role, roleOID)
+		return err
+	})
+	if err != nil {
+		return 0, err
+	}
+	return oid, nil
+}
+
+func (s *InstanceService) ConfigureAccess(ctx context.Context, target instance.ObservationTarget, name, role string, state provisioning.State) error {
+	return s.withManagementConnection(ctx, target, false, func(database Database) error {
+		return database.ConfigureAccess(ctx, name, role, state)
+	})
+}
+
+// 所有供应操作与观察共用同一个连接登记和 Secret 刷新边界。
+// 创建后凭据回读失败不能冒充明确未执行；用例必须保留不确定诊断。
+func (s *InstanceService) withManagementConnection(ctx context.Context, target instance.ObservationTarget, creating bool, operation func(Database) error) error {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	current, err := s.connection(ctx, target)
+	if err != nil {
+		return ErrResourceUnavailable
+	}
+	metadata, err := current.database.InspectManagement(ctx)
+	checks := metadata.Management
+	if err != nil || checks.Connection != instance.CheckPassed || checks.Roles != instance.CheckPassed || checks.Databases != instance.CheckPassed || checks.Grants != instance.CheckPassed {
+		return ErrResourceUnavailable
+	}
+	if err := s.checkCredentials(ctx, target, current.credentials); err != nil {
+		return ErrResourceUnavailable
+	}
+	if err := operation(current.database); err != nil {
+		return err
+	}
+	if err := s.checkCredentials(ctx, target, current.credentials); err != nil {
+		if creating {
+			return ErrResourceUncertain
+		}
+		return ErrResourceUnavailable
+	}
+	return nil
+}

internal/database/controller/credential_controller.go

@@ -35,12 +35,14 @@ func (r *CredentialReconciler) SetupWithManager(manager ctrl.Manager) error {
 	}
 	return ctrl.NewControllerManagedBy(manager).
 		Named("database-credentials").For(&databasev1alpha1.PostgreSQLDatabase{}).
-		Watches(&databasev1alpha1.PostgreSQLTenant{}, handler.EnqueueRequestsFromMapFunc(r.requestsForTenant)).
+		Watches(&databasev1alpha1.PostgreSQLTenant{}, handler.EnqueueRequestsFromMapFunc(databaseRequestsForTenant)).
-		Watches(&databasev1alpha1.PostgreSQLInstance{}, handler.EnqueueRequestsFromMapFunc(r.requestsForInstance)).
+		Watches(&databasev1alpha1.PostgreSQLInstance{}, handler.EnqueueRequestsFromMapFunc(func(ctx context.Context, object client.Object) []ctrl.Request {
+			return databaseRequestsForInstance(ctx, r.Client, object)
+		})).
 		Complete(r)
 }
 
-func (r *CredentialReconciler) requestsForTenant(_ context.Context, object client.Object) []ctrl.Request {
+func databaseRequestsForTenant(_ context.Context, object client.Object) []ctrl.Request {
 	tenant := object.(*databasev1alpha1.PostgreSQLTenant)
 	if tenant.Status.DatabaseRef == nil {
 		return nil
@@ -48,9 +50,9 @@ func (r *CredentialReconciler) requestsForTenant(_ context.Context, object clien
 	return []ctrl.Request{{Name: string(tenant.Status.DatabaseRef.Name)}}
 }
 
-func (r *CredentialReconciler) requestsForInstance(ctx context.Context, object client.Object) []ctrl.Request {
+func databaseRequestsForInstance(ctx context.Context, cache client.Client, object client.Object) []ctrl.Request {
 	databases := &databasev1alpha1.PostgreSQLDatabaseList{}
-	if err := r.Client.List(ctx, databases); err != nil {
+	if err := cache.List(ctx, databases); err != nil {
 		ctrl.LoggerFrom(ctx).Error(err, "无法映射 Instance 凭据准备事件；等待低频重试")
 		return nil
 	}

internal/database/controller/instance_controller_test.go

@@ -18,6 +18,7 @@ import (
 )
 
 type instanceBackend struct {
+	application.ResourceDatabase
 	checks  instance.ManagementChecks
 	err     error
 	inspect func()

internal/database/controller/provisioning_controller.go

@@ -0,0 +1,43 @@
+package controller
+
+import (
+	"context"
+	"errors"
+	"time"
+
+	databasev1alpha1 "git.ddupan.top/panxiao81/ayatori/api/database/v1alpha1"
+	"git.ddupan.top/panxiao81/ayatori/internal/database/application"
+	ctrl "sigs.k8s.io/controller-runtime"
+	"sigs.k8s.io/controller-runtime/pkg/client"
+	"sigs.k8s.io/controller-runtime/pkg/handler"
+)
+
+type ProvisioningReconciler struct {
+	Client  client.Client
+	Service *application.DatabaseReconciliation
+}
+
+func NewProvisioningReconciler(cache client.Client, service *application.DatabaseReconciliation) *ProvisioningReconciler {
+	return &ProvisioningReconciler{Client: cache, Service: service}
+}
+
+func (r *ProvisioningReconciler) Reconcile(ctx context.Context, request ctrl.Request) (ctrl.Result, error) {
+	operationContext, cancel := context.WithTimeout(ctx, 30*time.Second)
+	defer cancel()
+	if err := r.Service.Reconcile(operationContext, request.Name); err != nil {
+		return ctrl.Result{}, err
+	}
+	return ctrl.Result{RequeueAfter: dependencyRetry}, nil
+}
+
+func (r *ProvisioningReconciler) SetupWithManager(manager ctrl.Manager) error {
+	if r.Client == nil || r.Service == nil {
+		return errors.New("provisioning controller requires injected client and use case")
+	}
+	return ctrl.NewControllerManagedBy(manager).Named("database-provisioning").
+		For(&databasev1alpha1.PostgreSQLDatabase{}).
+		Watches(&databasev1alpha1.PostgreSQLTenant{}, handler.EnqueueRequestsFromMapFunc(databaseRequestsForTenant)).
+		Watches(&databasev1alpha1.PostgreSQLInstance{}, handler.EnqueueRequestsFromMapFunc(func(ctx context.Context, object client.Object) []ctrl.Request {
+			return databaseRequestsForInstance(ctx, r.Client, object)
+		})).Complete(r)
+}

internal/database/domain/credential/preparation.go

@@ -106,14 +106,14 @@ func (t Target) Check() *Issue {
 		return &Issue{Unavailable, "等待 Database 与 Tenant 双向绑定完成"}
 	}
 	if *database.Tenant != t.Tenant.Identity || *t.Tenant.Database != database.Identity {
-		return &Issue{Conflict, "双向绑定的名称或 UID 不匹配，未创建凭据"}
+		return &Issue{Conflict, "双向绑定的名称或 UID 不匹配，未继续供应"}
 	}
 	if t.Tenant.Deleting || t.Tenant.Phase != binding.Bound || !t.DatabaseProtected || !t.TenantProtected {
-		return &Issue{Stopped, "Tenant 未完成绑定、正在删除或缺少 finalizer 保护，未创建凭据"}
+		return &Issue{Stopped, "Tenant 未完成绑定、正在删除或缺少 finalizer 保护，未继续供应"}
 	}
 	request, err := t.Tenant.Request.Resolve(t.Tenant.Identity)
 	if err != nil || (request.Provision != nil && !database.MatchesProvision(request, t.Tenant.Identity)) || request.Name != database.Identity.Name {
-		return &Issue{Conflict, "Tenant 申请与 Database 目标不一致，未创建凭据"}
+		return &Issue{Conflict, "Tenant 申请与 Database 目标不一致，未继续供应"}
 	}
 	if t.Instance == nil || database.InstanceUID == "" {
 		return &Issue{Unavailable, "等待 Instance 与已记录的实例身份"}

internal/database/domain/provisioning/state.go

@@ -0,0 +1,66 @@
+// Package provisioning 保存 PostgreSQL 资源供应的确认与恢复规则，不依赖后端或 API。
+package provisioning
+
+import "fmt"
+
+type Phase string
+
+const (
+	Pending          Phase = "Pending"
+	CreatingRole     Phase = "CreatingRole"
+	CreatingDatabase Phase = "CreatingDatabase"
+	Available        Phase = "Available"
+	Conflict         Phase = "Conflict"
+	Unavailable      Phase = "Unavailable"
+	Stopped          Phase = "Stopped"
+)
+
+// OID 是已成功创建并回读的对象身份，不是从名称推导出的管理授权。
+// 仅保存在 CR；不建立 PostgreSQL registry，也不承诺备份还原后的自动认领。
+type State struct {
+	RoleOID     uint32
+	DatabaseOID uint32
+	Phase       Phase
+	Message     string
+}
+
+type Observation struct {
+	RoleOID          uint32
+	DatabaseOID      uint32
+	RoleSafe         bool
+	OwnerOID         uint32
+	PublicConnect    bool
+	AllowConnections bool
+}
+
+func (s State) WithPhase(phase Phase, message string) State {
+	s.Phase, s.Message = phase, message
+	return s
+}
+
+func (s State) Resume() (State, bool) {
+	if s.Phase == Conflict {
+		return s, false
+	}
+	if (s.Phase == CreatingRole && s.RoleOID == 0) || (s.Phase == CreatingDatabase && s.DatabaseOID == 0) {
+		return s.WithPhase(Conflict, "外部创建未留下成功确认；请核对目标角色和数据库，不自动认领或重复创建"), false
+	}
+	return s, true
+}
+
+// Check 既阻止未知同名对象，也拒绝已确认对象消失、被重建或权限漂移。
+func (s State) Check(o Observation) error {
+	if s.RoleOID != o.RoleOID {
+		return fmt.Errorf("角色身份不匹配：记录 OID=%d，观察 OID=%d", s.RoleOID, o.RoleOID)
+	}
+	if s.DatabaseOID != o.DatabaseOID {
+		return fmt.Errorf("数据库身份不匹配：记录 OID=%d，观察 OID=%d", s.DatabaseOID, o.DatabaseOID)
+	}
+	if o.RoleOID != 0 && !o.RoleSafe {
+		return fmt.Errorf("已确认角色的登录属性、特权或成员关系发生变化")
+	}
+	if o.DatabaseOID != 0 && o.OwnerOID != s.RoleOID {
+		return fmt.Errorf("数据库 owner 与已确认角色不匹配")
+	}
+	return nil
+}

internal/database/domain/provisioning/state_test.go

@@ -0,0 +1,52 @@
+package provisioning
+
+import "testing"
+
+func TestResume(t *testing.T) {
+	for _, test := range []struct {
+		name   string
+		state  State
+		resume bool
+	}{
+		{"初次", State{}, true},
+		{"角色创建不确定", State{Phase: CreatingRole}, false},
+		{"库创建不确定", State{RoleOID: 11, Phase: CreatingDatabase}, false},
+		{"已确认角色", State{RoleOID: 11, Phase: Pending}, true},
+		{"已确认资源暂不可用", State{RoleOID: 11, DatabaseOID: 22, Phase: Unavailable}, true},
+		{"冲突保持", State{RoleOID: 11, Phase: Conflict, Message: "首次诊断"}, false},
+	} {
+		t.Run(test.name, func(t *testing.T) {
+			state, resume := test.state.Resume()
+			if resume != test.resume || state.RoleOID != test.state.RoleOID || state.DatabaseOID != test.state.DatabaseOID {
+				t.Fatal("恢复决策丢失确认或错误放行")
+			}
+			if !resume && state.Phase != Conflict {
+				t.Fatal("不确定创建未转冲突")
+			}
+			if test.state.Phase == Conflict && state != test.state {
+				t.Fatal("冲突诊断被覆盖")
+			}
+		})
+	}
+}
+
+func TestObservedIdentity(t *testing.T) {
+	state := State{RoleOID: 11, DatabaseOID: 22}
+	good := Observation{RoleOID: 11, DatabaseOID: 22, RoleSafe: true, OwnerOID: 11}
+	if err := state.Check(good); err != nil {
+		t.Fatal(err)
+	}
+	for _, observed := range []Observation{
+		{}, {RoleOID: 12, DatabaseOID: 22, RoleSafe: true, OwnerOID: 12},
+		{RoleOID: 11, DatabaseOID: 23, RoleSafe: true, OwnerOID: 11},
+		{RoleOID: 11, DatabaseOID: 22, RoleSafe: false, OwnerOID: 11},
+		{RoleOID: 11, DatabaseOID: 22, RoleSafe: true, OwnerOID: 99},
+	} {
+		if state.Check(observed) == nil {
+			t.Fatal("对象身份或权限漂移被接受")
+		}
+	}
+	if (State{}).Check(good) == nil {
+		t.Fatal("未确认同名对象被认领")
+	}
+}