mirror of
https://github.com/Rain-kl/OpenFlare.git
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ryan
cf85a56aa7
- upload/task: taskCategoryUpload/taskQueueDefault 常量替代 8 处字面量 - admin: 复用既有 logDBNameSQLite 常量替代 3 处 "sqlite" 字面量 - pkg/cache/disk: defaultCleanupInterval 命名常量 - driver_asynq_worker/executor: 分离 contextKey 类型常量组 lint_issues 45→34, tests 44/44
434 lines
13 KiB
Go
434 lines
13 KiB
Go
// Copyright 2026 Arctel.net
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// SPDX-License-Identifier: Apache-2.0
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package task
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import (
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"Wavelet/core/contracts"
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"Wavelet/pkg/logger"
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"Wavelet/pkg/util"
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"Wavelet/plugins/domain/upload/models"
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"Wavelet/plugins/domain/upload/shared"
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"context"
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"crypto/sha256"
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"encoding/hex"
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"encoding/json"
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"errors"
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"fmt"
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"io"
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"os"
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"strings"
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"sync/atomic"
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"time"
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"golang.org/x/sync/errgroup"
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uploadstats "Wavelet/plugins/domain/upload/stats"
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uploadstorage "Wavelet/plugins/domain/upload/storage"
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)
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const (
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// StorageMigrationTask is the task name for storage migration.
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StorageMigrationTask = uploadstorage.StorageMigrationTask
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// TaskTypeStorageMigration is the task metadata type for storage migration.
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TaskTypeStorageMigration = "storage_migration"
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)
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// StorageMigrationMeta describes the manually dispatchable migration task.
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var StorageMigrationMeta = contracts.TaskMetaDTO{
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Name: StorageMigrationTask,
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DisplayName: "迁移文件存储",
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Description: "将活动存储中的文件迁移到待切换的目标存储，迁移期间文件系统保持只读",
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Category: taskCategoryUpload,
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MaxRetry: 3,
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Queue: taskQueueDefault,
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Params: []contracts.TaskParamDTO{
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{
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Name: "target",
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Type: "text",
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Required: true,
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Description: "待迁移到的目标存储引擎完整配置 JSON 字符串",
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},
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{
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Name: "batch_size",
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Type: "number",
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Required: false,
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Description: "每批扫描的文件数量（默认 100）",
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},
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{
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Name: "concurrency",
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Type: "number",
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Required: false,
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Description: "并发迁移 worker 数量（默认 4）",
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},
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},
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}
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// MigrationHandler copies stored objects and activates the target backend.
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type MigrationHandler struct{}
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// ValidatePayload rejects duplicate active migrations through the task framework.
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func (h *MigrationHandler) ValidatePayload(payload []byte) ([]byte, error) {
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normalized, _, err := uploadstorage.NormalizeMigrationPayload(context.Background(), payload)
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if err != nil {
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return payload, err
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}
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active, err := hasUnresolvedMigrationTask(context.Background())
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if err != nil {
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return payload, err
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}
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if active {
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return payload, fmt.Errorf("storage migration task is already unresolved")
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}
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return normalized, nil
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}
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// Execute migrates all unique active-storage objects to the pending backend.
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func (h *MigrationHandler) Execute(ctx context.Context, payload []byte) (*contracts.TaskResultDTO, error) {
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cache := shared.GetCache(ctx)
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if cache != nil {
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const (
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cleanupTimeout = 5 * time.Second
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renewalInterval = 10 * time.Minute
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)
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lockKey := "lock:storage:migrate"
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var lockVal string
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if err := cache.Get(ctx, lockKey, &lockVal); err == nil && lockVal != "" {
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return nil, errors.New("另一个存储迁移任务正在运行中")
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}
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_ = cache.Set(ctx, lockKey, "locked", time.Hour)
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stopRenewal := make(chan struct{})
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//nolint:contextcheck
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defer func() {
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close(stopRenewal)
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cleanupCtx, cancel := context.WithTimeout(context.Background(), cleanupTimeout)
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defer cancel()
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_ = cache.Delete(cleanupCtx, lockKey)
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}()
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//nolint:contextcheck,gosec
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util.Go(func() {
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ticker := time.NewTicker(renewalInterval)
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defer ticker.Stop()
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for {
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select {
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case <-ticker.C:
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renewCtx, cancel := context.WithTimeout(context.Background(), cleanupTimeout)
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_ = cache.Set(renewCtx, lockKey, "locked", time.Hour)
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cancel()
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case <-stopRenewal:
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return
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case <-ctx.Done():
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return
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}
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}
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})
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}
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active, err := loadActiveStorageConfig(ctx)
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if err != nil {
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return nil, fmt.Errorf("load active storage config: %w", err)
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}
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target, err := uploadstorage.ParseMigrationTargetConfig(ctx, payload)
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if err != nil {
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return nil, err
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}
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if target.Driver == active.Driver {
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if err := saveActiveStorageConfig(ctx, target); err != nil {
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return nil, fmt.Errorf("activate same-driver storage config: %w", err)
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}
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message := fmt.Sprintf("存储配置已更新，活动存储保持为 %s", target.Driver)
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logger.InfoF(ctx, "%s", message)
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return &contracts.TaskResultDTO{Message: message}, nil
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}
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total, err := countStorageObjects(ctx)
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if err != nil {
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return nil, fmt.Errorf("count source objects: %w", err)
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}
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if total == 0 {
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if err := saveActiveStorageConfig(ctx, target); err != nil {
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return nil, fmt.Errorf("activate empty storage config: %w", err)
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}
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message := fmt.Sprintf("当前存储没有需要迁移的对象，活动存储已切换为 %s", target.Driver)
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logger.InfoF(ctx, "%s", message)
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return &contracts.TaskResultDTO{Message: message}, nil
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}
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storageSvc := shared.GetStorage(ctx)
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if storageSvc == nil {
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return nil, errors.New("source storage service not available")
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}
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logger.InfoF(ctx, "开始存储迁移: %s -> %s，总对象数: %d", active.Driver, target.Driver, total)
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migrated, err := migrateObjects(ctx, storageSvc, storageSvc, total)
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if err != nil {
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return nil, err
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}
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if err := saveActiveStorageConfig(ctx, target); err != nil {
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return nil, fmt.Errorf("activate target storage: %w", err)
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}
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message := fmt.Sprintf("存储迁移完成，共迁移 %d 个对象，活动存储已切换为 %s", migrated, target.Driver)
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logger.InfoF(ctx, "%s", message)
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return &contracts.TaskResultDTO{Message: message}, nil
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}
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func loadActiveStorageConfig(ctx context.Context) (contracts.StorageConfigDTO, error) {
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var val string
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db := shared.GetDB(ctx)
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if db != nil {
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_ = db.Table("w_system_configs").Where("key = ?", "storage_config").Pluck("value", &val).Error
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}
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var cfg contracts.StorageConfigDTO
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if val != "" {
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_ = json.Unmarshal([]byte(val), &cfg)
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}
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return cfg, nil
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}
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func saveActiveStorageConfig(ctx context.Context, cfg contracts.StorageConfigDTO) error {
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data, err := json.Marshal(cfg)
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if err != nil {
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return err
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}
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db := shared.GetDB(ctx)
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if db == nil {
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return errors.New("database not available")
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}
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return db.Table("w_system_configs").
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Where("key = ?", "storage_config").
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Update("value", string(data)).Error
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}
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func countStorageObjects(ctx context.Context) (int64, error) {
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var count int64
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db := shared.GetDB(ctx)
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if db == nil {
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return 0, errors.New("database not available")
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}
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err := db.Model(&models.Upload{}).
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Where("status != ?", models.UploadStatusDeleted).
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Distinct("file_path").
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Count(&count).Error
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return count, err
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}
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func hasUnresolvedMigrationTask(ctx context.Context) (bool, error) {
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execution, ok, err := uploadstorage.LatestMigrationExecution(ctx)
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if err != nil || !ok || execution == nil {
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return false, err
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}
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return execution.Status == "pending" || execution.Status == "running", nil
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}
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type migrationObject struct {
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FilePath string `gorm:"column:file_path"`
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FileSize int64 `gorm:"column:file_size"`
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MimeType string `gorm:"column:mime_type"`
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Hash string `gorm:"column:hash"`
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}
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type storageReaderWriter interface {
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Get(ctx context.Context, key string) (*contracts.StorageObject, error)
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Put(ctx context.Context, key string, body io.Reader, size int64, contentType string) (contracts.StoragePutResult, error)
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}
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func migrateObjects(
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ctx context.Context,
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sourceBackend storageReaderWriter,
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targetBackend storageReaderWriter,
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total int64,
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) (int64, error) {
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const batchSize = 50
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const migrationConcurrency = 10
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const sha256HexLength = 64
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var migrated int64
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var lastFilePath string
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db := shared.GetDB(ctx)
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if db == nil {
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return 0, errors.New("database not available")
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}
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for {
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if err := ctx.Err(); err != nil {
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return atomic.LoadInt64(&migrated), fmt.Errorf("storage migration canceled: %w", err)
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}
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logger.InfoF(ctx, "正在查询待迁移对象批次，当前已完成迁移: %d/%d", atomic.LoadInt64(&migrated), total)
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var objects []migrationObject
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query := db.Model(&models.Upload{}).
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Select("file_path, MAX(file_size) AS file_size, MAX(mime_type) AS mime_type, MAX(hash) AS hash").
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Where("status != ?", models.UploadStatusDeleted)
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if lastFilePath != "" {
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query = query.Where("file_path > ?", lastFilePath)
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}
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if err := query.Group("file_path").
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Order("file_path ASC").
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Limit(batchSize).
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Scan(&objects).Error; err != nil {
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return atomic.LoadInt64(&migrated), fmt.Errorf("query source objects: %w", err)
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}
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if len(objects) == 0 {
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logger.InfoF(ctx, "所有对象迁移完毕")
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break
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}
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lastFilePath = objects[len(objects)-1].FilePath
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logger.InfoF(ctx, "获取当前批次迁移对象，批次大小: %d，实际获取对象数: %d", batchSize, len(objects))
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var g errgroup.Group
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g.SetLimit(migrationConcurrency)
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for _, object := range objects {
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obj := object
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g.Go(func() error {
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if err := migrateSingleObject(ctx, sourceBackend, targetBackend, obj, sha256HexLength); err != nil {
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return err
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}
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atomic.AddInt64(&migrated, 1)
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return nil
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})
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}
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if err := g.Wait(); err != nil {
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return atomic.LoadInt64(&migrated), err
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}
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logger.InfoF(ctx, "当前批次迁移完成。迁移进度: %d/%d", atomic.LoadInt64(&migrated), total)
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}
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return atomic.LoadInt64(&migrated), nil
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}
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func migrateSingleObject(
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ctx context.Context,
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sourceBackend storageReaderWriter,
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targetBackend storageReaderWriter,
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obj migrationObject,
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sha256HexLength int,
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) error {
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if shouldSkipMigration(ctx, sourceBackend, targetBackend, obj) {
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logger.InfoF(ctx, "[跳过迁移] 目标存储已存在相同文件: %s", obj.FilePath)
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return nil
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}
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logger.InfoF(ctx, "[迁移开始] 正在从源存储读取文件: %s", obj.FilePath)
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source, err := sourceBackend.Get(ctx, obj.FilePath)
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if err != nil {
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if isNotFoundError(err) {
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return markMissingMigrationObjectDeleted(ctx, obj.FilePath, err)
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}
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return fmt.Errorf("open source object %q: %w", obj.FilePath, err)
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}
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logger.InfoF(ctx, "[传输中] 正在向目标存储上传文件: %s (大小: %d 字节, 类型: %s)", obj.FilePath, obj.FileSize, obj.MimeType)
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targetResult, putErr := targetBackend.Put(ctx, obj.FilePath, source.Body, obj.FileSize, obj.MimeType)
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closeErr := source.Body.Close()
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if putErr != nil {
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return fmt.Errorf("copy object %q: %w", obj.FilePath, putErr)
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}
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if closeErr != nil {
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return fmt.Errorf("close source object %q: %w", obj.FilePath, closeErr)
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}
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if len(obj.Hash) == sha256HexLength {
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logger.InfoF(ctx, "[校验中] 正在对目标文件进行数据一致性校验 (SHA-256): %s", targetResult.Key)
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targetObj, getErr := targetBackend.Get(ctx, targetResult.Key)
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if getErr != nil {
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return fmt.Errorf("retrieve target object for verification %q: %w", obj.FilePath, getErr)
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}
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if targetObj == nil || targetObj.Body == nil {
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return fmt.Errorf("retrieve target object for verification %q: object or body is nil", obj.FilePath)
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}
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h := sha256.New()
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if _, copyErr := io.Copy(h, targetObj.Body); copyErr != nil {
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_ = targetObj.Body.Close()
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return fmt.Errorf("read target object for verification %q: %w", obj.FilePath, copyErr)
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}
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_ = targetObj.Body.Close()
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computedHash := hex.EncodeToString(h.Sum(nil))
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if computedHash != obj.Hash {
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return fmt.Errorf("integrity check failed for %q: got hash %s, want %s", obj.FilePath, computedHash, obj.Hash)
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}
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logger.InfoF(ctx, "[校验通过] 文件一致性校验成功: %s", targetResult.Key)
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}
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db := shared.GetDB(ctx)
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if targetResult.Key != obj.FilePath && db != nil {
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logger.InfoF(ctx, "[更新数据库] 正在更新文件路径: %s -> %s", obj.FilePath, targetResult.Key)
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if err := db.Model(&models.Upload{}).
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Where("file_path = ? AND status != ?", obj.FilePath, models.UploadStatusDeleted).
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Update("file_path", targetResult.Key).Error; err != nil {
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return fmt.Errorf("update migrated object %q: %w", obj.FilePath, err)
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}
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}
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logger.InfoF(ctx, "[迁移成功] 文件已完成迁移: %s", targetResult.Key)
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return nil
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}
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func shouldSkipMigration(
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ctx context.Context,
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sourceBackend storageReaderWriter,
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targetBackend storageReaderWriter,
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obj migrationObject,
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) bool {
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if sourceBackend == targetBackend {
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return false
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}
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targetObj, err := targetBackend.Get(ctx, obj.FilePath)
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if err != nil || targetObj == nil || targetObj.Body == nil {
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return false
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}
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defer func() {
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_ = targetObj.Body.Close()
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}()
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return targetObj.ContentLength == obj.FileSize
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}
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func markMissingMigrationObjectDeleted(
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ctx context.Context,
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filePath string,
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sourceErr error,
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) error {
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logger.WarnF(ctx, "警告: 源存储中物理文件不存在，标记为已删除并跳过: %s (错误: %v)", filePath, sourceErr)
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db := shared.GetDB(ctx)
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if db == nil {
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return errors.New("database not available")
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}
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var affectedUploads []models.Upload
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if err := db.
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Where("file_path = ? AND status != ?", filePath, models.UploadStatusDeleted).
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Find(&affectedUploads).Error; err != nil {
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return fmt.Errorf("load missing object uploads %q: %w", filePath, err)
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}
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if err := db.Model(&models.Upload{}).
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Where("file_path = ?", filePath).
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Update("status", models.UploadStatusDeleted).Error; err != nil {
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return fmt.Errorf("update missing object %q: %w", filePath, err)
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}
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for i := range affectedUploads {
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_ = uploadstats.ApplyUploadStatsRemove(ctx, &affectedUploads[i])
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}
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return nil
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}
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func isNotFoundError(err error) bool {
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if err == nil {
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return false
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}
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if errors.Is(err, os.ErrNotExist) {
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return true
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}
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errStr := strings.ToLower(err.Error())
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for _, sub := range []string{"not found", "nosuchkey", "nosuchbucket", "404", "does not exist"} {
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if strings.Contains(errStr, sub) {
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return true
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}
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}
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return false
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}
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