veryroundbird.house
1package db
2
3import (
4 "context"
5 "database/sql"
6 "log"
7
8 _ "github.com/mattn/go-sqlite3"
9)
10
11type DB struct {
12 *sql.DB
13}
14
15type Execer interface {
16 Query(query string, args ...any) (*sql.Rows, error)
17 QueryContext(ctx context.Context, query string, args ...any) (*sql.Rows, error)
18 QueryRow(query string, args ...any) *sql.Row
19 QueryRowContext(ctx context.Context, query string, args ...any) *sql.Row
20 Exec(query string, args ...any) (sql.Result, error)
21 ExecContext(ctx context.Context, query string, args ...any) (sql.Result, error)
22 Prepare(query string) (*sql.Stmt, error)
23 PrepareContext(ctx context.Context, query string) (*sql.Stmt, error)
24}
25
26func Make(dbPath string) (*DB, error) {
27 db, err := sql.Open("sqlite3", dbPath)
28 if err != nil {
29 return nil, err
30 }
31 _, err = db.Exec(`
32 pragma journal_mode = WAL;
33 pragma synchronous = normal;
34 pragma foreign_keys = on;
35 pragma temp_store = memory;
36 pragma mmap_size = 30000000000;
37 pragma page_size = 32768;
38 pragma auto_vacuum = incremental;
39 pragma busy_timeout = 5000;
40
41 create table if not exists registrations (
42 id integer primary key autoincrement,
43 domain text not null unique,
44 did text not null,
45 secret text not null,
46 created text not null default (strftime('%Y-%m-%dT%H:%M:%SZ', 'now')),
47 registered text
48 );
49 create table if not exists public_keys (
50 id integer primary key autoincrement,
51 did text not null,
52 name text not null,
53 key text not null,
54 created text not null default (strftime('%Y-%m-%dT%H:%M:%SZ', 'now')),
55 unique(did, name, key)
56 );
57 create table if not exists repos (
58 id integer primary key autoincrement,
59 did text not null,
60 name text not null,
61 knot text not null,
62 rkey text not null,
63 at_uri text not null unique,
64 created text not null default (strftime('%Y-%m-%dT%H:%M:%SZ', 'now')),
65 unique(did, name, knot, rkey)
66 );
67 create table if not exists collaborators (
68 id integer primary key autoincrement,
69 did text not null,
70 repo integer not null,
71 foreign key (repo) references repos(id) on delete cascade
72 );
73 create table if not exists follows (
74 user_did text not null,
75 subject_did text not null,
76 rkey text not null,
77 followed_at text not null default (strftime('%Y-%m-%dT%H:%M:%SZ', 'now')),
78 primary key (user_did, subject_did),
79 check (user_did <> subject_did)
80 );
81 create table if not exists issues (
82 id integer primary key autoincrement,
83 owner_did text not null,
84 repo_at text not null,
85 issue_id integer not null,
86 title text not null,
87 body text not null,
88 open integer not null default 1,
89 created text not null default (strftime('%Y-%m-%dT%H:%M:%SZ', 'now')),
90 issue_at text,
91 unique(repo_at, issue_id),
92 foreign key (repo_at) references repos(at_uri) on delete cascade
93 );
94 create table if not exists comments (
95 id integer primary key autoincrement,
96 owner_did text not null,
97 issue_id integer not null,
98 repo_at text not null,
99 comment_id integer not null,
100 comment_at text not null,
101 body text not null,
102 created text not null default (strftime('%Y-%m-%dT%H:%M:%SZ', 'now')),
103 unique(issue_id, comment_id),
104 foreign key (repo_at, issue_id) references issues(repo_at, issue_id) on delete cascade
105 );
106 create table if not exists _jetstream (
107 id integer primary key autoincrement,
108 last_time_us integer not null
109 );
110
111 create table if not exists repo_issue_seqs (
112 repo_at text primary key,
113 next_issue_id integer not null default 1
114 );
115
116 create table if not exists stars (
117 id integer primary key autoincrement,
118 starred_by_did text not null,
119 repo_at text not null,
120 rkey text not null,
121 created text not null default (strftime('%Y-%m-%dT%H:%M:%SZ', 'now')),
122 foreign key (repo_at) references repos(at_uri) on delete cascade,
123 unique(starred_by_did, repo_at)
124 );
125
126 create table if not exists migrations (
127 id integer primary key autoincrement,
128 name text unique
129 )
130 `)
131 if err != nil {
132 return nil, err
133 }
134
135 // run migrations
136 runMigration(db, "add-description-to-repos", func(tx *sql.Tx) error {
137 tx.Exec(`
138 alter table repos add column description text check (length(description) <= 200);
139 `)
140 return nil
141 })
142
143 return &DB{db}, nil
144}
145
146type migrationFn = func(*sql.Tx) error
147
148func runMigration(d *sql.DB, name string, migrationFn migrationFn) error {
149 tx, err := d.Begin()
150 if err != nil {
151 return err
152 }
153 defer tx.Rollback()
154
155 var exists bool
156 err = tx.QueryRow("select exists (select 1 from migrations where name = ?)", name).Scan(&exists)
157 if err != nil {
158 return err
159 }
160
161 if !exists {
162 // run migration
163 err = migrationFn(tx)
164 if err != nil {
165 log.Printf("Failed to run migration %s: %v", name, err)
166 return err
167 }
168
169 // mark migration as complete
170 _, err = tx.Exec("insert into migrations (name) values (?)", name)
171 if err != nil {
172 log.Printf("Failed to mark migration %s as complete: %v", name, err)
173 return err
174 }
175
176 // commit the transaction
177 if err := tx.Commit(); err != nil {
178 return err
179 }
180 } else {
181 log.Printf("skipped migration %s, already applied", name)
182 }
183
184 return nil
185}