Files
Maven/internal/store/dialogue.go
kami c668310b3e Persist the dialogue session so a restart keeps the conversation
Vikunja #363. The follow-up session was a plain in-memory map, so any
mavend restart dropped the thread. It now mirrors to a small TTL-pruned
sqlite table and is loaded on startup; expired sessions are deleted on
load, not revived. Clarify's pending question is untouched.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01CGeSZxh1DCtRxmFVSYVGvJ
2026-07-31 13:20:30 +04:00

75 lines
2.6 KiB
Go

package store
import (
"context"
"fmt"
"time"
)
// DialogueSessionRow — one saved follow-up session. Data is the session
// encoded by the dialogue package; the store does not look inside it.
type DialogueSessionRow struct {
ID string
Data []byte
Ts time.Time
TTL time.Duration
Expires time.Time
}
// SaveDialogueSession — write (or replace) the session for one dialogue id.
// One row per id: a newer turn overwrites the older state.
func (s *Store) SaveDialogueSession(ctx context.Context, id string, data []byte, ts time.Time, ttl time.Duration) error {
expires := ts.Add(ttl)
_, err := s.db.ExecContext(ctx, `
INSERT INTO dialogue_sessions (id, data, ts, ttl_ms, expires_ts) VALUES (?, ?, ?, ?, ?)
ON CONFLICT(id) DO UPDATE SET data = excluded.data,
ts = excluded.ts,
ttl_ms = excluded.ttl_ms,
expires_ts = excluded.expires_ts`,
id, data, ts.UnixMilli(), ttl.Milliseconds(), expires.UnixMilli())
if err != nil {
return fmt.Errorf("save dialogue session: %w", err)
}
return nil
}
// DeleteDialogueSession — drop one session (ended, or expired).
func (s *Store) DeleteDialogueSession(ctx context.Context, id string) error {
if _, err := s.db.ExecContext(ctx, `DELETE FROM dialogue_sessions WHERE id = ?`, id); err != nil {
return fmt.Errorf("delete dialogue session: %w", err)
}
return nil
}
// LoadDialogueSessions — return the sessions still alive at `now` and delete
// the ones that already ran out. An expired session is dead: it never comes
// back after a restart.
func (s *Store) LoadDialogueSessions(ctx context.Context, now time.Time) ([]DialogueSessionRow, error) {
if _, err := s.db.ExecContext(ctx,
`DELETE FROM dialogue_sessions WHERE expires_ts <= ?`, now.UnixMilli()); err != nil {
return nil, fmt.Errorf("prune dialogue sessions: %w", err)
}
rows, err := s.db.QueryContext(ctx,
`SELECT id, data, ts, ttl_ms, expires_ts FROM dialogue_sessions ORDER BY id`)
if err != nil {
return nil, fmt.Errorf("load dialogue sessions: %w", err)
}
defer rows.Close()
var out []DialogueSessionRow
for rows.Next() {
var r DialogueSessionRow
var tsMilli, ttlMilli, expMilli int64
if err := rows.Scan(&r.ID, &r.Data, &tsMilli, &ttlMilli, &expMilli); err != nil {
return nil, fmt.Errorf("scan dialogue session: %w", err)
}
r.Ts = time.UnixMilli(tsMilli).UTC()
r.TTL = time.Duration(ttlMilli) * time.Millisecond
r.Expires = time.UnixMilli(expMilli).UTC()
out = append(out, r)
}
if err := rows.Err(); err != nil {
return nil, fmt.Errorf("load dialogue sessions: %w", err)
}
return out, nil
}