AskaEth
f43751fd07
- history/list_after.go: ListAfter(升序, created_at>after, 走覆盖索引, rowid兜底同毫秒) - HistoryStore 新增 ListAfter(store+fakes同步) - gateway history.go: handleListMessages解析after分流; after+before互斥400; 负数/非数字400 - 新增测试(list_after/history_after), build/vet/test绿+交叉编译 - Docs/api-client v0.26 + api-reference §3.4 同步
48 lines
1.8 KiB
Go
48 lines
1.8 KiB
Go
package history
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import (
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"context"
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"fmt"
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)
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// ListAfter returns up to limit messages for sessionID strictly newer than after
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// (created_at > after) in oldest-first order, for forward incremental catch-up: a
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// client that reconnected passes the newest createdAt it has already seen and pulls
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// only what it missed, however many messages that is (the "before" cursor only walks
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// backwards and cannot recover a gap larger than one page). When platform is non-empty
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// the page is further restricted to messages carrying that source platform, exactly as
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// in List. rowid breaks created_at ties so messages written in the same millisecond
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// keep their insertion order. The returned slice is non-nil; limit is clamped to
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// [1, maxPageLimit].
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func (s *Store) ListAfter(ctx context.Context, sessionID string, after int64, limit int, platform string) ([]Message, error) {
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limit = clampLimit(limit)
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query := `SELECT id, session_id, role, content, mode, mood, image, thinking, platform, device_id, sender_name, adapter_id, created_at
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FROM chat_messages WHERE session_id = ? AND created_at > ?`
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args := []any{sessionID, after}
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if platform != "" {
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query += ` AND platform = ?`
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args = append(args, platform)
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}
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query += ` ORDER BY created_at ASC, rowid ASC LIMIT ?`
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args = append(args, limit)
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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, fmt.Errorf("history: list after %s: %w", sessionID, err)
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}
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defer func() { _ = rows.Close() }()
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msgs := make([]Message, 0)
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for rows.Next() {
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m, err := scanMessage(rows)
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if err != nil {
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return nil, fmt.Errorf("history: scan list after %s: %w", sessionID, err)
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}
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msgs = append(msgs, m)
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}
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if err := rows.Err(); err != nil {
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return nil, fmt.Errorf("history: iterate list after %s: %w", sessionID, err)
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}
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return msgs, nil
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}
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