foxwitch.net
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 pulls (
107 id integer primary key autoincrement,
108 owner_did text not null,
109 repo_at text not null,
110 pull_id integer not null,
111 title text not null,
112 body text not null,
113 patch text,
114 pull_at text,
115 rkey text not null,
116 target_branch text not null,
117 state integer not null default 0 check (state in (0, 1, 2)), -- open, merged, closed
118 created text not null default (strftime('%Y-%m-%dT%H:%M:%SZ', 'now')),
119 unique(repo_at, pull_id),
120 foreign key (repo_at) references repos(at_uri) on delete cascade
121 );
122 create table if not exists pull_comments (
123 id integer primary key autoincrement,
124 owner_did text not null,
125 pull_id integer not null,
126 repo_at text not null,
127 comment_id integer not null,
128 comment_at text not null,
129 body text not null,
130 created text not null default (strftime('%Y-%m-%dT%H:%M:%SZ', 'now')),
131 unique(pull_id, comment_id),
132 foreign key (repo_at, pull_id) references pulls(repo_at, pull_id) on delete cascade
133 );
134 create table if not exists _jetstream (
135 id integer primary key autoincrement,
136 last_time_us integer not null
137 );
138
139 create table if not exists repo_issue_seqs (
140 repo_at text primary key,
141 next_issue_id integer not null default 1
142 );
143
144 create table if not exists repo_pull_seqs (
145 repo_at text primary key,
146 next_pull_id integer not null default 1
147 );
148
149 create table if not exists stars (
150 id integer primary key autoincrement,
151 starred_by_did text not null,
152 repo_at text not null,
153 rkey text not null,
154 created text not null default (strftime('%Y-%m-%dT%H:%M:%SZ', 'now')),
155 foreign key (repo_at) references repos(at_uri) on delete cascade,
156 unique(starred_by_did, repo_at)
157 );
158
159 create table if not exists migrations (
160 id integer primary key autoincrement,
161 name text unique
162 )
163 `)
164 if err != nil {
165 return nil, err
166 }
167
168 // run migrations
169 runMigration(db, "add-description-to-repos", func(tx *sql.Tx) error {
170 tx.Exec(`
171 alter table repos add column description text check (length(description) <= 200);
172 `)
173 return nil
174 })
175
176 runMigration(db, "add-rkey-to-pubkeys", func(tx *sql.Tx) error {
177 // add unconstrained column
178 _, err := tx.Exec(`
179 alter table public_keys
180 add column rkey text;
181 `)
182 if err != nil {
183 return err
184 }
185
186 // backfill
187 _, err = tx.Exec(`
188 update public_keys
189 set rkey = ''
190 where rkey is null;
191 `)
192 if err != nil {
193 return err
194 }
195
196 return nil
197 })
198
199 return &DB{db}, nil
200}
201
202type migrationFn = func(*sql.Tx) error
203
204func runMigration(d *sql.DB, name string, migrationFn migrationFn) error {
205 tx, err := d.Begin()
206 if err != nil {
207 return err
208 }
209 defer tx.Rollback()
210
211 var exists bool
212 err = tx.QueryRow("select exists (select 1 from migrations where name = ?)", name).Scan(&exists)
213 if err != nil {
214 return err
215 }
216
217 if !exists {
218 // run migration
219 err = migrationFn(tx)
220 if err != nil {
221 log.Printf("Failed to run migration %s: %v", name, err)
222 return err
223 }
224
225 // mark migration as complete
226 _, err = tx.Exec("insert into migrations (name) values (?)", name)
227 if err != nil {
228 log.Printf("Failed to mark migration %s as complete: %v", name, err)
229 return err
230 }
231
232 // commit the transaction
233 if err := tx.Commit(); err != nil {
234 return err
235 }
236
237 log.Printf("migration %s applied successfully", name)
238 } else {
239 log.Printf("skipped migration %s, already applied", name)
240 }
241
242 return nil
243}