/
database.go
193 lines (148 loc) · 4.43 KB
/
database.go
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package suite
import (
"context"
"database/sql"
"fmt"
"time"
"github.com/Masterminds/squirrel"
"github.com/bool64/sqluct"
"github.com/godogx/dbsteps"
"github.com/jmoiron/sqlx"
"go.nhat.io/otelsql"
"go.nhat.io/otelsql/tests/suite/customer"
)
// DatabaseContext is a set of PreparerContext, ExecerContext, QueryerContext.
type DatabaseContext interface {
PreparerContext
ExecerContext
QueryerContext
}
// PreparerContext creates a prepared statement for later queries or executions.
type PreparerContext interface {
PrepareContext(ctx context.Context, query string) (*sql.Stmt, error)
}
// ExecerContext executes a query without returning any rows.
type ExecerContext interface {
ExecContext(ctx context.Context, query string, args ...interface{}) (sql.Result, error)
}
// QueryerContext executes a query that returns rows, typically a SELECT.
type QueryerContext interface {
QueryContext(ctx context.Context, query string, args ...interface{}) (*sql.Rows, error)
QueryRowContext(ctx context.Context, query string, args ...interface{}) *sql.Row
}
func openDB(driver, dsn string) (*sql.DB, error) {
driver, err := otelsql.Register(driver,
otelsql.TraceAll(),
)
if err != nil {
return nil, fmt.Errorf("could not register otelsql: %w", err)
}
db, err := sql.Open(driver, dsn)
if err != nil {
return nil, fmt.Errorf("could not init db: %w", err)
}
if err := otelsql.RecordStats(db, otelsql.WithMinimumReadDBStatsInterval(50*time.Millisecond)); err != nil {
return nil, fmt.Errorf("could not record db stats: %w", err)
}
return db, nil
}
func openDBxWithoutInstrumentation(driver, dsn string) (*sqlx.DB, error) {
db, err := sql.Open(driver, dsn)
if err != nil {
return nil, fmt.Errorf("could not init db: %w", err)
}
return sqlx.NewDb(db, driver), nil
}
func makeDBManager(db *sqlx.DB, placeholderFormat squirrel.PlaceholderFormat) *dbsteps.Manager {
dbm := dbsteps.NewManager()
storage := sqluct.NewStorage(db)
storage.Mapper = &sqluct.Mapper{}
storage.Format = placeholderFormat
dbm.Instances = map[string]dbsteps.Instance{
"default": {
Storage: storage,
Tables: map[string]interface{}{
"customer": new(customer.Customer),
},
},
}
return dbm
}
// DatabaseExecer executes query depends on what it has.
type DatabaseExecer interface {
Exec(ctx context.Context, query string, args ...interface{}) (sql.Result, error)
Query(ctx context.Context, query string, args ...interface{}) (*sql.Rows, error)
QueryRow(ctx context.Context, query string, args ...interface{}) (*sql.Row, error)
}
type databaseExecer struct {
db DatabaseContext
usePreparer bool
}
func (e *databaseExecer) closeStmt(stmt *sql.Stmt) {
if tx, ok := e.db.(*txContext); ok {
tx.statements = append(tx.statements, stmt)
return
}
_ = stmt.Close() // nolint: errcheck
}
// Exec executes a query.
func (e *databaseExecer) Exec(ctx context.Context, query string, args ...interface{}) (sql.Result, error) {
if !e.usePreparer {
return e.db.ExecContext(ctx, query, args...)
}
p, err := e.db.PrepareContext(ctx, query) // nolint: sqlclosecheck
if err != nil {
return nil, err
}
defer e.closeStmt(p)
return p.ExecContext(ctx, args...)
}
// Query executes a query and returns rows.
func (e *databaseExecer) Query(ctx context.Context, query string, args ...interface{}) (*sql.Rows, error) {
if !e.usePreparer {
return e.db.QueryContext(ctx, query, args...)
}
p, err := e.db.PrepareContext(ctx, query) // nolint: sqlclosecheck
if err != nil {
return nil, err
}
defer e.closeStmt(p)
return p.QueryContext(ctx, args...)
}
// QueryRow executes a query and returns a row.
func (e *databaseExecer) QueryRow(ctx context.Context, query string, args ...interface{}) (*sql.Row, error) {
if !e.usePreparer {
return e.db.QueryRowContext(ctx, query, args...), nil
}
p, err := e.db.PrepareContext(ctx, query) // nolint: sqlclosecheck
if err != nil {
return nil, err
}
defer e.closeStmt(p)
return p.QueryRowContext(ctx, args...), nil
}
func newDatabaseExecer(db DatabaseContext, usePreparer bool) DatabaseExecer {
return &databaseExecer{
db: db,
usePreparer: usePreparer,
}
}
type txContext struct {
*sql.Tx
statements []*sql.Stmt
}
func (t *txContext) closeStmts() {
for _, s := range t.statements {
_ = s.Close() // nolint: errcheck
}
}
func (t *txContext) Commit() (err error) {
err = t.Tx.Commit()
defer t.closeStmts()
return
}
func (t *txContext) Rollback() (err error) {
err = t.Tx.Rollback()
defer t.closeStmts()
return
}