286 lines
10 KiB
Go
286 lines
10 KiB
Go
package creator
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import (
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"context"
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"database/sql"
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"errors"
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"net/url"
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"strconv"
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"strings"
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"time"
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"unicode/utf8"
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"github.com/jackc/pgx/v5/pgtype"
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)
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const (
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CompetitorShareJobQueued = "queued"
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CompetitorShareJobProcessing = "processing"
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CompetitorShareJobSucceeded = "succeeded"
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CompetitorShareJobFailed = "failed"
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MaxCompetitorShareJobAttempts = 3
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)
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func validateCompetitorShareJobInput(input CompetitorShareJobInput) error {
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if !ValidatePlatform(input.Platform) || input.ShareURL == "" || utf8.RuneCountInString(input.ShareURL) > 2000 {
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return ErrInvalid
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}
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parsed, err := url.Parse(input.ShareURL)
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if err != nil || parsed.Scheme != "https" || parsed.Hostname() == "" || parsed.User != nil || parsed.Port() != "" || parsed.Fragment != "" {
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return ErrInvalid
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}
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return validateCreatorTags(input.Tags)
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}
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func normalizeCompetitorShareJobInput(input CompetitorShareJobInput) (CompetitorShareJobInput, error) {
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input.Platform = strings.TrimSpace(input.Platform)
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input.ShareURL = strings.TrimSpace(input.ShareURL)
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if input.Tags == nil {
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input.Tags = []string{}
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}
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if err := validateCompetitorShareJobInput(input); err != nil {
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return CompetitorShareJobInput{}, err
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}
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return input, nil
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}
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func (s *Store) CreateCompetitorShareJob(ctx context.Context, input CompetitorShareJobInput) (CompetitorShareJob, error) {
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input, err := normalizeCompetitorShareJobInput(input)
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if err != nil {
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return CompetitorShareJob{}, err
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}
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id := newID("competitor-share-job")
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if _, err := s.db.ExecContext(ctx, `
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INSERT INTO creator_competitor_share_job (id, platform, share_url, tags)
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VALUES ($1, $2, $3, $4)`, id, input.Platform, input.ShareURL, input.Tags); err != nil {
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return CompetitorShareJob{}, databaseError(err)
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}
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return s.GetCompetitorShareJob(ctx, id)
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}
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func scanCompetitorShareJob(scanner interface{ Scan(...any) error }) (CompetitorShareJob, error) {
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var result CompetitorShareJob
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var tags pgtype.FlatArray[string]
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var competitorID sql.NullString
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var leaseUntil, lastAttemptAt, completedAt sql.NullTime
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if err := scanner.Scan(&result.ID, &result.Platform, &result.ShareURL, pgtype.NewMap().SQLScanner(&tags),
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&result.Status, &result.Attempts, &competitorID, &result.FailureReason, &leaseUntil, &lastAttemptAt,
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&completedAt, &result.CreatedAt, &result.UpdatedAt); err != nil {
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return CompetitorShareJob{}, err
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}
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result.Tags = []string(tags)
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if competitorID.Valid {
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result.CompetitorID = competitorID.String
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}
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result.LastAttemptAt = nullableTime(lastAttemptAt)
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result.CompletedAt = nullableTime(completedAt)
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return result, nil
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}
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const competitorShareJobSelect = `SELECT id, platform, share_url, tags, status, attempts, competitor_id,
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failure_reason, lease_until, last_attempt_at, completed_at, created_at, updated_at
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FROM creator_competitor_share_job`
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func (s *Store) GetCompetitorShareJob(ctx context.Context, id string) (CompetitorShareJob, error) {
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result, err := scanCompetitorShareJob(s.db.QueryRowContext(ctx, competitorShareJobSelect+` WHERE id = $1`, id))
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return result, rowError(err)
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}
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// ListCompetitorShareJobsWithAuthor 附带作者名（join competitor 表），供导入页列表展示。
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func (s *Store) ListCompetitorShareJobsWithAuthor(ctx context.Context, platform, status string) ([]CompetitorShareJobView, error) {
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if platform != "" && !ValidatePlatform(platform) || status != "" && !validateCompetitorShareJobStatus(status) {
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return nil, ErrInvalid
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}
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query, args := competitorShareJobFilter(competitorShareJobSelect+`
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LEFT JOIN creator_competitor ON creator_competitor.id = creator_competitor_share_job.competitor_id`, platform, status)
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rows, err := s.db.QueryContext(ctx, query+` ORDER BY creator_competitor_share_job.created_at DESC, creator_competitor_share_job.id`, args...)
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if err != nil {
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return nil, databaseError(err)
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}
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defer rows.Close()
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var items []CompetitorShareJobView
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for rows.Next() {
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var item CompetitorShareJobView
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var tags pgtype.FlatArray[string]
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var competitorID, nickname sql.NullString
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var leaseUntil, lastAttemptAt, completedAt sql.NullTime
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if err := rows.Scan(&item.ID, &item.Platform, &item.ShareURL, pgtype.NewMap().SQLScanner(&tags),
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&item.Status, &item.Attempts, &competitorID, &item.FailureReason, &leaseUntil, &lastAttemptAt,
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&completedAt, &item.CreatedAt, &item.UpdatedAt, &nickname); err != nil {
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return nil, databaseError(err)
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}
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item.Tags = []string(tags)
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if competitorID.Valid {
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item.CompetitorID = competitorID.String
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}
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item.LastAttemptAt = nullableTime(lastAttemptAt)
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item.CompletedAt = nullableTime(completedAt)
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item.AuthorName = nickname.String
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items = append(items, item)
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}
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return items, rows.Err()
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}
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func validateCompetitorShareJobStatus(status string) bool {
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switch status {
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case CompetitorShareJobQueued, CompetitorShareJobProcessing, CompetitorShareJobSucceeded, CompetitorShareJobFailed:
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return true
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default:
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return false
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}
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}
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func competitorShareJobFilter(query, platform, status string) (string, []any) {
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conditions := make([]string, 0, 2)
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args := make([]any, 0, 2)
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if platform != "" {
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args = append(args, platform)
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conditions = append(conditions, "creator_competitor_share_job.platform = $"+strconv.Itoa(len(args)))
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}
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if status != "" {
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args = append(args, status)
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conditions = append(conditions, "creator_competitor_share_job.status = $"+strconv.Itoa(len(args)))
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}
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if len(conditions) > 0 {
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query += ` WHERE ` + strings.Join(conditions, ` AND `)
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}
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return query, args
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}
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func (s *Store) ListCompetitorShareJobs(ctx context.Context, platform, status string) ([]CompetitorShareJob, error) {
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if platform != "" && !ValidatePlatform(platform) || status != "" && !validateCompetitorShareJobStatus(status) {
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return nil, ErrInvalid
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}
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query := competitorShareJobSelect
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conditions := make([]string, 0, 2)
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args := make([]any, 0, 2)
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if platform != "" {
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args = append(args, platform)
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conditions = append(conditions, "platform = $"+strconv.Itoa(len(args)))
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}
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if status != "" {
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args = append(args, status)
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conditions = append(conditions, "status = $"+strconv.Itoa(len(args)))
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}
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if len(conditions) > 0 {
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query += ` WHERE ` + strings.Join(conditions, ` AND `)
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}
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query += ` ORDER BY created_at DESC, id`
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rows, err := s.db.QueryContext(ctx, query, args...)
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if err != nil {
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return nil, databaseError(err)
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}
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defer rows.Close()
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result := make([]CompetitorShareJob, 0)
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for rows.Next() {
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item, err := scanCompetitorShareJob(rows)
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if err != nil {
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return nil, err
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}
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result = append(result, item)
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}
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return result, rows.Err()
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}
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func (s *Store) ListDueCompetitorShareJobs(ctx context.Context, now time.Time) ([]CompetitorShareJob, error) {
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if now.IsZero() {
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return nil, ErrInvalid
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}
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rows, err := s.db.QueryContext(ctx, competitorShareJobSelect+` WHERE
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(status = 'queued' AND attempts < $1) OR
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(status = 'processing' AND lease_until IS NOT NULL AND lease_until <= $2)
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ORDER BY created_at, id`, MaxCompetitorShareJobAttempts, now.UTC())
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if err != nil {
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return nil, databaseError(err)
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}
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defer rows.Close()
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result := make([]CompetitorShareJob, 0)
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for rows.Next() {
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item, err := scanCompetitorShareJob(rows)
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if err != nil {
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return nil, err
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}
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result = append(result, item)
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}
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return result, rows.Err()
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}
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func (s *Store) ClaimCompetitorShareJob(ctx context.Context, id string, now time.Time) (CompetitorShareJob, string, bool, error) {
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if strings.TrimSpace(id) == "" || now.IsZero() {
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return CompetitorShareJob{}, "", false, ErrInvalid
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}
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token := newID("competitor-share-lease")
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claimed, err := scanCompetitorShareJob(s.db.QueryRowContext(ctx, `
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UPDATE creator_competitor_share_job
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SET status = 'processing',
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attempts = CASE WHEN status = 'queued' THEN attempts + 1 ELSE attempts END,
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lease_token = $3,
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lease_until = $2 + interval '10 minutes',
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last_attempt_at = $2,
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updated_at = $2
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WHERE id = $1 AND (
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(status = 'queued' AND attempts < $4) OR
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(status = 'processing' AND lease_until IS NOT NULL AND lease_until <= $2)
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)
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RETURNING id, platform, share_url, tags, status, attempts, competitor_id,
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failure_reason, lease_until, last_attempt_at, completed_at, created_at, updated_at`, id, now.UTC(), token, MaxCompetitorShareJobAttempts))
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if err != nil {
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if errors.Is(err, sql.ErrNoRows) {
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return CompetitorShareJob{}, "", false, nil
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}
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return CompetitorShareJob{}, "", false, databaseError(err)
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}
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return claimed, token, true, nil
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}
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func (s *Store) MarkCompetitorShareJob(ctx context.Context, id, leaseToken, status, competitorID, failureReason string) error {
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if strings.TrimSpace(id) == "" || strings.TrimSpace(leaseToken) == "" ||
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(status != CompetitorShareJobQueued && status != CompetitorShareJobSucceeded && status != CompetitorShareJobFailed) {
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return ErrInvalid
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}
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if status == CompetitorShareJobSucceeded && strings.TrimSpace(competitorID) == "" || status != CompetitorShareJobSucceeded && competitorID != "" {
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return ErrInvalid
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}
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result, err := s.db.ExecContext(ctx, `
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UPDATE creator_competitor_share_job
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SET status = $3, competitor_id = $4, failure_reason = $5,
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lease_token = '', lease_until = NULL,
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completed_at = CASE WHEN $3 = 'queued' THEN NULL ELSE now() END,
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updated_at = now()
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WHERE id = $1 AND lease_token = $2 AND status = 'processing'`, id, leaseToken, status, nullableString(competitorID), failureReason)
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if err != nil {
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return databaseError(err)
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}
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if affected, err := result.RowsAffected(); err != nil {
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return databaseError(err)
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} else if affected != 1 {
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return ErrConflict
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}
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return nil
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}
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func (s *Store) RetryCompetitorShareJob(ctx context.Context, id string) (CompetitorShareJob, error) {
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id = strings.TrimSpace(id)
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if id == "" {
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return CompetitorShareJob{}, ErrInvalid
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}
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result, err := s.db.ExecContext(ctx, `
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UPDATE creator_competitor_share_job
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SET status = 'queued', attempts = 0, competitor_id = NULL,
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lease_token = '', lease_until = NULL, completed_at = NULL, updated_at = now()
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WHERE id = $1 AND status = 'failed'`, id)
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if err != nil {
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return CompetitorShareJob{}, databaseError(err)
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}
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if affected, err := result.RowsAffected(); err != nil {
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return CompetitorShareJob{}, databaseError(err)
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} else if affected != 1 {
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if _, getErr := s.GetCompetitorShareJob(ctx, id); getErr != nil {
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return CompetitorShareJob{}, getErr
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}
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return CompetitorShareJob{}, ErrConflict
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}
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return s.GetCompetitorShareJob(ctx, id)
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}
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