julien.rbrt.fr
forked from
tangled.org/core
Monorepo for Tangled — https://tangled.org
1package db
2
3import (
4 "database/sql"
5
6 _ "github.com/mattn/go-sqlite3"
7)
8
9type DB struct {
10 *sql.DB
11}
12
13func Make(dbPath string) (*DB, error) {
14 db, err := sql.Open("sqlite3", dbPath)
15 if err != nil {
16 return nil, err
17 }
18
19 _, err = db.Exec(`
20 pragma journal_mode = WAL;
21 pragma synchronous = normal;
22 pragma foreign_keys = on;
23 pragma temp_store = memory;
24 pragma mmap_size = 30000000000;
25 pragma page_size = 32768;
26 pragma auto_vacuum = incremental;
27 pragma busy_timeout = 5000;
28
29 create table if not exists known_dids (
30 did text primary key
31 );
32
33 -- status event for a single workflow
34 create table if not exists events (
35 rkey text not null,
36 nsid text not null,
37 event text not null, -- json
38 created integer not null -- unix nanos
39 );
40 `)
41 if err != nil {
42 return nil, err
43 }
44
45 return &DB{db}, nil
46}
47
48func (d *DB) SaveLastTimeUs(lastTimeUs int64) error {
49 _, err := d.Exec(`
50 insert into _jetstream (id, last_time_us)
51 values (1, ?)
52 on conflict(id) do update set last_time_us = excluded.last_time_us
53 `, lastTimeUs)
54 return err
55}
56
57func (d *DB) GetLastTimeUs() (int64, error) {
58 var lastTimeUs int64
59 row := d.QueryRow(`select last_time_us from _jetstream where id = 1;`)
60 err := row.Scan(&lastTimeUs)
61 return lastTimeUs, err
62}