mix
8ce050ef7f
Initial feature-complete implementation of the v1.0 specification (phases 0-11 of `docs/implementation-plan.md`). Added: - Panel (Go, single static binary) with SQLite persistence, one-time - Domain management with per-domain DKIM (RSA-2048, generated in pure Go) and - Application (sender identity) management: SASL credentials via `sasldb2`, - Full Postfix relay config generated from env at container start: SMTPS 465, - Journal milter (pure Go, `go-milter`) recording every send to `send_log`; … (6 more in CHANGELOG) Full detail: CHANGELOG.md (0.1.0).
101 lines
2.9 KiB
Go
101 lines
2.9 KiB
Go
// Package store owns the SelfPost SQLite database: the single file under /data
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// that persists the administrator account, sending domains and applications,
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// the send log and rate-limit settings (spec 9). It exposes typed queries so
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// the rest of the panel never builds SQL by hand.
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package store
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import (
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"database/sql"
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"embed"
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"fmt"
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"io/fs"
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"sort"
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_ "modernc.org/sqlite" // pure-Go SQLite driver (no cgo), keeps the static build
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)
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//go:embed migrations/*.sql
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var migrationsFS embed.FS
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// Store wraps the database connection pool.
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type Store struct {
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db *sql.DB
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}
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// Open opens (creating if needed) the SQLite database at path, enables WAL and
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// foreign keys, and applies any pending migrations. The caller owns Close.
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func Open(path string) (*Store, error) {
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// _pragma parameters are applied on every pooled connection by the driver,
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// so foreign-key enforcement and WAL survive connection churn.
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dsn := fmt.Sprintf("file:%s?_pragma=journal_mode(WAL)&_pragma=busy_timeout(5000)&_pragma=foreign_keys(ON)", path)
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db, err := sql.Open("sqlite", dsn)
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if err != nil {
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return nil, fmt.Errorf("open database: %w", err)
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}
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// modernc's driver serializes writes anyway; a small pool avoids
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// "database is locked" surprises under WAL.
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db.SetMaxOpenConns(1)
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s := &Store{db: db}
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if err := s.migrate(); err != nil {
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db.Close()
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return nil, err
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}
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return s, nil
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}
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// Close closes the underlying database.
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func (s *Store) Close() error {
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return s.db.Close()
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}
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// migrate applies embedded migrations in filename order, tracking progress via
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// SQLite's PRAGMA user_version so each migration runs at most once.
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func (s *Store) migrate() error {
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entries, err := fs.ReadDir(migrationsFS, "migrations")
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if err != nil {
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return fmt.Errorf("read migrations: %w", err)
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}
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names := make([]string, 0, len(entries))
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for _, e := range entries {
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if !e.IsDir() {
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names = append(names, e.Name())
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}
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}
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sort.Strings(names)
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var version int
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if err := s.db.QueryRow("PRAGMA user_version").Scan(&version); err != nil {
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return fmt.Errorf("read schema version: %w", err)
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}
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for i, name := range names {
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target := i + 1
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if target <= version {
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continue
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}
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sqlBytes, err := migrationsFS.ReadFile("migrations/" + name)
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if err != nil {
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return fmt.Errorf("read migration %s: %w", name, err)
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}
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tx, err := s.db.Begin()
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if err != nil {
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return fmt.Errorf("begin migration %s: %w", name, err)
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}
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if _, err := tx.Exec(string(sqlBytes)); err != nil {
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tx.Rollback()
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return fmt.Errorf("apply migration %s: %w", name, err)
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}
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// PRAGMA does not accept a bound parameter, and target is a trusted
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// loop index, so formatting it in is safe.
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if _, err := tx.Exec(fmt.Sprintf("PRAGMA user_version = %d", target)); err != nil {
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tx.Rollback()
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return fmt.Errorf("bump schema version for %s: %w", name, err)
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}
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if err := tx.Commit(); err != nil {
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return fmt.Errorf("commit migration %s: %w", name, err)
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}
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}
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return nil
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}
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