428 lines
16 KiB
Go
428 lines
16 KiB
Go
package repository
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import (
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"context"
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"errors"
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"math"
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"time"
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"fashionapi/internal/model"
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"gorm.io/gorm"
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)
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// IngestRepository 爬虫入库管线专属仓储:任务队列(ingest_jobs)+ nonce 防重放
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// (ingest_nonces)+ 走秀正式表写入(brand_runways / brand_runway_images)。
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//
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// 去重由 worker 按「实体键」完成:走秀 = brand_id + season_code + collection_type,
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// 街拍 = city + year(与 review_repository 的 SaveRunwayFromDraft / SaveStreetSnapFromDraft
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// 晋升时的幂等键一致),因此一个秀/街拍只会在正式表留一行,多来源图片在晋升阶段聚合。
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//
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// 入队与领取用同一张 ingest_jobs 表,领取靠 PostgreSQL 的 FOR UPDATE SKIP LOCKED
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// 实现「多 worker 安全并发」——同一条任务只会被一个 worker 拿到,其它 worker 跳过它。
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type IngestRepository interface {
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// Enqueue 写入一条待处理任务(payload 为原始 JSON)。
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Enqueue(ctx context.Context, job *model.IngestJob) error
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// Claim 原子领取最多 limit 条 pending 任务并置为 processing,返回这些任务。
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// 用 SKIP LOCKED 保证多 worker 不抢同一条。
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Claim(ctx context.Context, limit int) ([]model.IngestJob, error)
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// MarkDone 标记任务成功。
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MarkDone(ctx context.Context, id uint32) error
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// MarkFailed 标记任务失败并记录错误(attempts 自增)。
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MarkFailed(ctx context.Context, id uint32, errMsg string) error
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// ReserveNonce 写入一次性随机串;若已存在(重放)返回 ok=false。
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ReserveNonce(ctx context.Context, nonce string) (ok bool, err error)
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// RunwayIDByEntity 按实体键(brand_id + season_code + collection_type)查是否已存在走秀正式表;
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// 返回 (id, found)。worker 据此跳过已晋升秀的重爬,避免重复下载。
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RunwayIDByEntity(ctx context.Context, brandID uint32, seasonCode, collectionType string) (uint32, bool, error)
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// CreateRunwayDraft 插入走秀草稿行(status=pending),返回自增主键。
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CreateRunwayDraft(ctx context.Context, d *model.BrandRunwayDraft) (uint32, error)
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// CreateRunwayDraftImages 批量插入草稿图片行。
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CreateRunwayDraftImages(ctx context.Context, imgs []model.BrandRunwayDraftImage) error
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// StreetSnapIDByEntity 按实体键(city + year)查是否已存在街拍正式表;返回 (id, found)。
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StreetSnapIDByEntity(ctx context.Context, city string, year uint16) (uint32, bool, error)
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// CreateStreetSnapDraft 插入街拍草稿行(status=pending),返回自增主键。
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CreateStreetSnapDraft(ctx context.Context, d *model.StreetSnapDraft) (uint32, error)
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// CreateStreetSnapDraftImages 批量插入街拍草稿图片行。
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CreateStreetSnapDraftImages(ctx context.Context, imgs []model.StreetSnapDraftImage) error
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// FindNearDuplicateImage 在给定图片表中按 dHash 汉明距离检索近重复,返回命中行 id(仅取最近一条)。
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FindNearDuplicateImage(ctx context.Context, tables []string, phashBits string, threshold int) (dupID uint32, found bool, err error)
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// ListJobs 按 id 倒序分页列出入库任务(用于后台监控页)。offset/limit 控制分页。
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ListJobs(ctx context.Context, offset, limit int) ([]model.IngestJob, error)
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// CountJobs 返回 ingest_jobs 总条数(用于分页计算总页数)。
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CountJobs(ctx context.Context) (int64, error)
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// RetryJob 把一条 failed 任务重置回 pending,清 last_error/locked_at,等待 worker 重新处理。
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RetryJob(ctx context.Context, id uint32) error
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// EnqueueMediaCleanup 写入一条「清理S4孤儿图」任务(payload 为待清理 key 的 JSON)。
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// 由删除图集的服务调用,把同步的S4删除改为异步队列,避免阻塞删除请求。
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EnqueueMediaCleanup(ctx context.Context, payload string) error
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// ScheduleRetry 失败时调用:attempts+1,未达上限则退避后重置 pending,达上限则置 failed。
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// 用于临时失败(网络抖动 / 单图下载失败)的自动重试,区别于永久失败(payload 解析错等)直接 MarkFailed。
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ScheduleRetry(ctx context.Context, id uint32, errMsg string) error
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}
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type ingestRepository struct {
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db *gorm.DB
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}
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// NewIngestRepository 创建入库管线仓储。
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func NewIngestRepository(db *gorm.DB) IngestRepository {
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return &ingestRepository{db: db}
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}
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func (r *ingestRepository) Enqueue(ctx context.Context, job *model.IngestJob) error {
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now := uint32(time.Now().Unix())
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job.CreatedAt = now
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job.UpdatedAt = now
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job.Status = model.IngestStatusPending
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return r.db.WithContext(ctx).Create(job).Error
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}
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// Claim 在事务内 SELECT ... FOR UPDATE SKIP LOCKED 锁定 pending 行,
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// 立即置为 processing,再返回这些行,保证领取与状态变更原子、且不被其它 worker 重复领取。
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//
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// 事务内先做两件事:
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// 1. 回收卡死的 processing 任务——worker 崩溃/被杀会留下 processing 孤儿永久卡死,
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// 锁定超时(IngestStuckTimeoutSec)后重置回 pending 并立即可领(next_attempt_at=now)。
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// 2. 仅领取「已到重试时间」的 pending(next_attempt_at <= now),未到退避点的暂不领。
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func (r *ingestRepository) Claim(ctx context.Context, limit int) ([]model.IngestJob, error) {
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if limit < 1 {
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limit = 10
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}
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now := uint32(time.Now().Unix())
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tx := r.db.WithContext(ctx).Begin()
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if tx.Error != nil {
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return nil, tx.Error
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}
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defer func() {
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if tx.Error != nil {
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tx.Rollback()
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}
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}()
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// 1) 回收卡死的 processing 任务(仅当时间足够大,避免服务器启动初期把刚领取的任务误回收)。
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if now > model.IngestStuckTimeoutSec {
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if err := tx.Model(&model.IngestJob{}).
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Where("status = ? AND locked_at > 0 AND locked_at < ?",
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model.IngestStatusProcessing, now-model.IngestStuckTimeoutSec).
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Updates(map[string]any{
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"status": model.IngestStatusPending,
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"locked_at": 0,
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"next_attempt_at": now,
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"updated_at": now,
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}).Error; err != nil {
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return nil, err
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}
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}
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// 2) 领取 pending 且已到重试时间的任务(含刚回收的 + 新入队的 + 退避已到期的)。
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// 优先处理 media_cleanup(删除图集时异步清理S4),避免被大批 crawl 任务排到后面、清理迟迟不触发。
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var ids []uint32
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if err := tx.Raw(
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"SELECT id FROM ingest_jobs WHERE status = ? AND next_attempt_at <= ? "+
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"ORDER BY CASE kind WHEN ? THEN 0 ELSE 1 END, id ASC LIMIT ? FOR UPDATE SKIP LOCKED",
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model.IngestStatusPending, now, model.IngestKindMediaCleanup, limit,
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).Scan(&ids).Error; err != nil {
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return nil, err
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}
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if len(ids) == 0 {
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tx.Commit()
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return nil, nil
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}
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if err := tx.Model(&model.IngestJob{}).
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Where("id IN ?", ids).
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Updates(map[string]any{
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"status": model.IngestStatusProcessing,
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"locked_at": now,
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"updated_at": now,
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}).Error; err != nil {
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return nil, err
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}
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if err := tx.Commit().Error; err != nil {
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return nil, err
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}
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var jobs []model.IngestJob
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if err := r.db.WithContext(ctx).Where("id IN ?", ids).Find(&jobs).Error; err != nil {
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return nil, err
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}
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return jobs, nil
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}
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func (r *ingestRepository) MarkDone(ctx context.Context, id uint32) error {
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return r.db.WithContext(ctx).
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Model(&model.IngestJob{}).
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Where("id = ?", id).
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Updates(map[string]any{
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"status": model.IngestStatusDone,
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"last_error": "",
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"updated_at": uint32(time.Now().Unix()),
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}).Error
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}
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func (r *ingestRepository) MarkFailed(ctx context.Context, id uint32, errMsg string) error {
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return r.db.WithContext(ctx).
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Model(&model.IngestJob{}).
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Where("id = ?", id).
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Updates(map[string]any{
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"status": model.IngestStatusFailed,
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"attempts": gorm.Expr("attempts + 1"),
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"last_error": errMsg,
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"updated_at": uint32(time.Now().Unix()),
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}).Error
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}
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// ScheduleRetry 失败时调度自动重试:attempts+1,未达上限(IngestMaxAttempts)则按指数退避
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// 重置为 pending 并写入 next_attempt_at(到点才可被 Claim 领取);达上限则置 failed,需人工处理。
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// 用于临时失败(网络抖动 / 单图下载失败),区别于永久失败(payload 解析错等)直接 MarkFailed。
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func (r *ingestRepository) ScheduleRetry(ctx context.Context, id uint32, errMsg string) error {
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now := uint32(time.Now().Unix())
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var job model.IngestJob
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if err := r.db.WithContext(ctx).Select("attempts").Where("id = ?", id).First(&job).Error; err != nil {
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return err
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}
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attempts := int(job.Attempts) + 1
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if attempts >= model.IngestMaxAttempts {
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return r.db.WithContext(ctx).
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Model(&model.IngestJob{}).
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Where("id = ?", id).
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Updates(map[string]any{
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"status": model.IngestStatusFailed,
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"attempts": attempts,
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"last_error": errMsg,
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"updated_at": now,
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}).Error
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}
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delay := model.IngestRetryBackoff(attempts)
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return r.db.WithContext(ctx).
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Model(&model.IngestJob{}).
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Where("id = ?", id).
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Updates(map[string]any{
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"status": model.IngestStatusPending,
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"attempts": attempts,
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"last_error": errMsg,
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"next_attempt_at": now + uint32(delay),
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"locked_at": 0,
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"updated_at": now,
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}).Error
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}
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// EnqueueMediaCleanup 写入一条「清理S4孤儿图」任务(kind=media_cleanup),
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// payload 为待清理 key 的 JSON,由 worker 的 processMediaCleanup 按引用计数判定真孤儿后删除。
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func (r *ingestRepository) EnqueueMediaCleanup(ctx context.Context, payload string) error {
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now := uint32(time.Now().Unix())
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job := &model.IngestJob{
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Kind: model.IngestKindMediaCleanup,
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Payload: payload,
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CreatedAt: now,
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UpdatedAt: now,
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Status: model.IngestStatusPending,
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}
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return r.db.WithContext(ctx).Create(job).Error
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}
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// ReserveNonce 写入一次性随机串;依赖 ingest_nces.nonce 主键唯一约束,
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// 重复插入触发 DuplicateEntry → 视为重放,返回 ok=false。
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func (r *ingestRepository) ReserveNonce(ctx context.Context, nonce string) (bool, error) {
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err := r.db.WithContext(ctx).Create(&model.IngestNonce{
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Nonce: nonce,
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CreatedAt: uint32(time.Now().Unix()),
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}).Error
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if err != nil {
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// 唯一键冲突 → 重放
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if errors.Is(err, gorm.ErrDuplicatedKey) || isDuplicateKey(err) {
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return false, nil
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}
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return false, err
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}
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return true, nil
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}
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// RunwayIDByEntity 按实体键查走秀正式表是否已存在(与 SaveRunwayFromDraft 晋升键一致)。
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func (r *ingestRepository) RunwayIDByEntity(ctx context.Context, brandID uint32, seasonCode, collectionType string) (uint32, bool, error) {
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var row struct {
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ID uint32 `gorm:"column:id"`
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}
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err := r.db.WithContext(ctx).
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Model(&model.BrandRunway{}).
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Select("id").
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Where("brand_id = ? AND season_code = ? AND collection_type = ? AND is_deleted = 0", brandID, seasonCode, collectionType).
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Limit(1).
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Scan(&row).Error
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if err != nil {
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return 0, false, err
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}
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if row.ID == 0 {
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return 0, false, nil
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}
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return row.ID, true, nil
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}
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func (r *ingestRepository) CreateRunwayDraft(ctx context.Context, d *model.BrandRunwayDraft) (uint32, error) {
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now := uint32(time.Now().Unix())
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d.CreatedAt = now
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d.UpdatedAt = now
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if d.Status == "" {
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d.Status = model.DraftStatusPending
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}
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if err := r.db.WithContext(ctx).Create(d).Error; err != nil {
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return 0, err
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}
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return d.ID, nil
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}
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func (r *ingestRepository) CreateRunwayDraftImages(ctx context.Context, imgs []model.BrandRunwayDraftImage) error {
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if len(imgs) == 0 {
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return nil
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}
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now := uint32(time.Now().Unix())
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for i := range imgs {
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imgs[i].CreatedAt = now
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imgs[i].UpdatedAt = now
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}
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return r.db.WithContext(ctx).Create(&imgs).Error
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}
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// StreetSnapIDByEntity 按实体键(city + year)查街拍正式表是否已存在(与 SaveStreetSnapFromDraft 晋升键一致)。
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func (r *ingestRepository) StreetSnapIDByEntity(ctx context.Context, city string, year uint16) (uint32, bool, error) {
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var row struct {
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ID uint32 `gorm:"column:id"`
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}
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err := r.db.WithContext(ctx).
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Model(&model.StreetSnap{}).
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Select("id").
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Where("city = ? AND year = ? AND is_deleted = 0", city, year).
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Limit(1).
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Scan(&row).Error
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if err != nil {
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return 0, false, err
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}
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if row.ID == 0 {
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return 0, false, nil
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}
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return row.ID, true, nil
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}
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func (r *ingestRepository) CreateStreetSnapDraft(ctx context.Context, d *model.StreetSnapDraft) (uint32, error) {
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now := uint32(time.Now().Unix())
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d.CreatedAt = now
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d.UpdatedAt = now
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if d.Status == "" {
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d.Status = model.DraftStatusPending
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}
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if err := r.db.WithContext(ctx).Create(d).Error; err != nil {
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return 0, err
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}
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return d.ID, nil
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}
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func (r *ingestRepository) CreateStreetSnapDraftImages(ctx context.Context, imgs []model.StreetSnapDraftImage) error {
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if len(imgs) == 0 {
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return nil
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}
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now := uint32(time.Now().Unix())
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for i := range imgs {
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imgs[i].CreatedAt = now
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imgs[i].UpdatedAt = now
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}
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return r.db.WithContext(ctx).Create(&imgs).Error
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}
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// ListJobs 按 id 倒序分页列出入库任务(后台监控页用)。offset/limit 控制分页区间。
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func (r *ingestRepository) ListJobs(ctx context.Context, offset, limit int) ([]model.IngestJob, error) {
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if limit < 1 {
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limit = 50
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}
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if offset < 0 {
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offset = 0
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}
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var jobs []model.IngestJob
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if err := r.db.WithContext(ctx).Order("id DESC").Offset(offset).Limit(limit).Find(&jobs).Error; err != nil {
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return nil, err
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}
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return jobs, nil
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}
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// CountJobs 返回 ingest_jobs 总条数(后台监控页分页用)。
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func (r *ingestRepository) CountJobs(ctx context.Context) (int64, error) {
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var n int64
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if err := r.db.WithContext(ctx).Model(&model.IngestJob{}).Count(&n).Error; err != nil {
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return 0, err
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}
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return n, nil
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}
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// RetryJob 把一条 failed 任务重置回 pending,清掉 last_error / locked_at / next_attempt_at,
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// 让 worker(每 3s 扫一次 pending)立即重新拉起处理。仅对 failed 生效,其它状态原样不动。
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func (r *ingestRepository) RetryJob(ctx context.Context, id uint32) error {
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now := uint32(time.Now().Unix())
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return r.db.WithContext(ctx).
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Model(&model.IngestJob{}).
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Where("id = ? AND status = ?", id, model.IngestStatusFailed).
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Updates(map[string]any{
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"status": model.IngestStatusPending,
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"locked_at": 0,
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"last_error": "",
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"next_attempt_at": 0,
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"updated_at": now,
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}).Error
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}
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// FindNearDuplicateImage 在给定图片表中按 dHash 汉明距离检索近重复,取距离 ≤ threshold 的最近一条。
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// 算子用 pgvector 的 L2(<->);因 phash 是 {0,1}^64 向量,L2² == 汉明距离,故 L2 阈值 = sqrt(threshold)。
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// phashBits 为 vector(64) 二进制向量串;NULL 的 phash 不参与比较。
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func (r *ingestRepository) FindNearDuplicateImage(ctx context.Context, tables []string, phashBits string, threshold int) (uint32, bool, error) {
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// 汉明阈值转 L2 阈值:phash 为 {0,1}^64 向量,L2² == 汉明距离,故 L2 阈值 = sqrt(汉明阈值)。
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l2Limit := math.Sqrt(float64(threshold))
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for _, t := range tables {
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var row struct {
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ID uint32 `gorm:"column:id"`
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Dist float64 `gorm:"column:dist"`
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}
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err := r.db.WithContext(ctx).Table(t).
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Select("id, (phash <-> ?::vector) AS dist", phashBits).
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Where("(phash <-> ?::vector) <= ?", phashBits, l2Limit).
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Order("dist ASC").
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Limit(1).
|
||
Scan(&row).Error
|
||
if err != nil {
|
||
return 0, false, err
|
||
}
|
||
if row.ID != 0 {
|
||
return row.ID, true, nil
|
||
}
|
||
}
|
||
return 0, false, nil
|
||
}
|
||
|
||
// isDuplicateKey 兜底:gorm 的 ErrDuplicatedKey 在不同驱动下的封装不一定一致,
|
||
// 命中驱动返回的唯一约束冲突错误信息更稳(兼容 MySQL/PostgreSQL/SQLite 不同措辞)。
|
||
func isDuplicateKey(err error) bool {
|
||
if err == nil {
|
||
return false
|
||
}
|
||
msg := err.Error()
|
||
return containsAny(msg, "Duplicate entry", "1062", "duplicate key", "violates unique constraint", "UNIQUE constraint failed")
|
||
}
|
||
|
||
func containsAny(s string, subs ...string) bool {
|
||
for _, sub := range subs {
|
||
if len(sub) > 0 && indexOf(s, sub) >= 0 {
|
||
return true
|
||
}
|
||
}
|
||
return false
|
||
}
|
||
|
||
func indexOf(s, sub string) int {
|
||
for i := 0; i+len(sub) <= len(s); i++ {
|
||
if s[i:i+len(sub)] == sub {
|
||
return i
|
||
}
|
||
}
|
||
return -1
|
||
}
|