mirror of
https://github.com/therootcompany/golib.git
synced 2026-04-24 12:48:00 +00:00
AJ ONeal
5783d4fc7a
ExecUp/ExecDown now take (ctx, Migration, sql string) instead of (ctx, Migration) with embedded Up/Down fields. Applied returns []Migration instead of []AppliedMigration. - pgmigrate, mymigrate, litemigrate, msmigrate: new interface, v1.0.2 dep - shmigrate: v1.0.2 dep, remove temporary replace directive - cmd/sql-migrate: v1.0.2 dep
88 lines
2.5 KiB
Go
88 lines
2.5 KiB
Go
// Package litemigrate implements sqlmigrate.Migrator for SQLite
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// using database/sql. The caller imports the driver:
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//
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// import _ "modernc.org/sqlite"
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//
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// db, err := sql.Open("sqlite", "app.db?_pragma=foreign_keys(1)")
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//
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// SQLite disables foreign key enforcement by default. The _pragma DSN
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// parameter enables it on every connection the pool opens.
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package litemigrate
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import (
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"context"
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"database/sql"
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"fmt"
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"strings"
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"github.com/therootcompany/golib/database/sqlmigrate"
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)
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// Migrator implements sqlmigrate.Migrator using a *sql.DB with SQLite.
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type Migrator struct {
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DB *sql.DB
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}
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// New creates a Migrator from the given database handle.
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func New(db *sql.DB) *Migrator {
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return &Migrator{DB: db}
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}
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var _ sqlmigrate.Migrator = (*Migrator)(nil)
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// ExecUp runs the up migration SQL inside a transaction.
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func (m *Migrator) ExecUp(ctx context.Context, mig sqlmigrate.Migration, sql string) error {
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return m.execInTx(ctx, sql)
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}
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// ExecDown runs the down migration SQL inside a transaction.
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func (m *Migrator) ExecDown(ctx context.Context, mig sqlmigrate.Migration, sql string) error {
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return m.execInTx(ctx, sql)
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}
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func (m *Migrator) execInTx(ctx context.Context, sqlStr string) error {
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tx, err := m.DB.BeginTx(ctx, nil)
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if err != nil {
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return fmt.Errorf("%w: begin: %w", sqlmigrate.ErrExecFailed, err)
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}
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defer func() { _ = tx.Rollback() }()
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if _, err := tx.ExecContext(ctx, sqlStr); err != nil {
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return fmt.Errorf("%w: exec: %w", sqlmigrate.ErrExecFailed, err)
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}
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if err := tx.Commit(); err != nil {
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return fmt.Errorf("%w: commit: %w", sqlmigrate.ErrExecFailed, err)
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}
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return nil
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}
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// Applied returns all applied migrations from the _migrations table.
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// Returns an empty slice if the table does not exist.
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func (m *Migrator) Applied(ctx context.Context) ([]sqlmigrate.Migration, error) {
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rows, err := m.DB.QueryContext(ctx, "SELECT id, name FROM _migrations ORDER BY name")
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if err != nil {
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// SQLite reports "no such table: _migrations" — stable across versions
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if strings.Contains(err.Error(), "no such table") {
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return nil, nil
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}
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return nil, fmt.Errorf("%w: %w", sqlmigrate.ErrQueryApplied, err)
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}
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defer rows.Close()
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var applied []sqlmigrate.Migration
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for rows.Next() {
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var a sqlmigrate.Migration
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if err := rows.Scan(&a.ID, &a.Name); err != nil {
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return nil, fmt.Errorf("%w: scanning row: %w", sqlmigrate.ErrQueryApplied, err)
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}
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applied = append(applied, a)
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}
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if err := rows.Err(); err != nil {
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return nil, fmt.Errorf("%w: reading rows: %w", sqlmigrate.ErrQueryApplied, err)
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}
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return applied, nil
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}
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