98 lines
2.6 KiB
Go
98 lines
2.6 KiB
Go
package db
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import (
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"context"
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"database/sql"
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"errors"
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"fmt"
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"io/fs"
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"path"
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"sort"
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"strings"
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"evobgp/migrations"
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"github.com/jackc/pgx/v5/pgxpool"
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_ "modernc.org/sqlite"
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)
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// OpenPostgresPool connects, applies embedded migrations, returns a pool.
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func OpenPostgresPool(ctx context.Context, dsn string) (*pgxpool.Pool, error) {
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cfg, err := pgxpool.ParseConfig(dsn)
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if err != nil {
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return nil, err
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}
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pool, err := pgxpool.NewWithConfig(ctx, cfg)
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if err != nil {
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return nil, err
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}
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if err := ApplyPostgresMigrations(ctx, pool, migrations.Postgres, "postgres"); err != nil {
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pool.Close()
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return nil, err
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}
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return pool, nil
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}
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// OpenSQLite applies sqlite/*.up.sql then opens the DB (foreign keys on).
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func OpenSQLite(ctx context.Context, filePath string) (*sql.DB, error) {
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dsn := fmt.Sprintf("file:%s?_pragma=foreign_keys(1)", strings.TrimPrefix(filePath, "file:"))
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db, err := sql.Open("sqlite", dsn)
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if err != nil {
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return nil, err
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}
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if err := db.PingContext(ctx); err != nil {
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_ = db.Close()
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return nil, err
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}
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if err := applySQLiteMigrations(ctx, db, migrations.SQLite, "sqlite"); err != nil {
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_ = db.Close()
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return nil, err
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}
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return db, nil
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}
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func applySQLiteMigrations(ctx context.Context, db *sql.DB, fsys fs.FS, subdir string) error {
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if _, err := db.ExecContext(ctx, `CREATE TABLE IF NOT EXISTS schema_migrations (version TEXT NOT NULL PRIMARY KEY)`); err != nil {
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return fmt.Errorf("db: sqlite schema_migrations: %w", err)
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}
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entries, err := fs.ReadDir(fsys, subdir)
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if err != nil {
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return err
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}
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var ups []string
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for _, e := range entries {
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if e.IsDir() || !strings.HasSuffix(e.Name(), ".up.sql") {
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continue
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}
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ups = append(ups, e.Name())
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}
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sort.Strings(ups)
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for _, name := range ups {
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ver := strings.TrimSuffix(name, ".up.sql")
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var dummy int
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err := db.QueryRowContext(ctx, `SELECT 1 FROM schema_migrations WHERE version = ?`, ver).Scan(&dummy)
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if err == nil {
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continue
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}
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if !errors.Is(err, sql.ErrNoRows) {
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return err
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}
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body, err := fs.ReadFile(fsys, path.Join(subdir, name))
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if err != nil {
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return err
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}
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if _, err := db.ExecContext(ctx, string(body)); err != nil {
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// Idempotent ALTER ADD COLUMN for sqlite dev re-runs
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if strings.Contains(err.Error(), "duplicate column") {
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_, _ = db.ExecContext(ctx, `INSERT OR IGNORE INTO schema_migrations (version) VALUES (?)`, ver)
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continue
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}
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return fmt.Errorf("db: sqlite migrate %s: %w", name, err)
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}
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if _, err := db.ExecContext(ctx, `INSERT INTO schema_migrations (version) VALUES (?)`, ver); err != nil {
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return err
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}
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}
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return nil
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}
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