/
database.go
60 lines (47 loc) · 889 Bytes
/
database.go
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package postgresql
import (
"database/sql"
_ "github.com/lib/pq"
)
type PostgreSQL struct {
ConnectionURL string
db *sql.DB
}
func Initialize(ConnectionURL string) *PostgreSQL {
return &PostgreSQL{ConnectionURL: ConnectionURL}
}
func (p *PostgreSQL) connection() (*sql.DB, error) {
if p.db != nil {
if err := p.db.Ping(); err == nil {
return p.db, nil
}
p.db.Close()
}
db, err := sql.Open("postgres", p.ConnectionURL)
if err != nil {
return nil, err
}
return db, nil
}
func (p *PostgreSQL) RunQueries(queries []string) error {
db, err := p.connection()
if err != nil {
return err
}
tx, err := db.Begin()
if err != nil {
return err
}
defer func() {
tx.Rollback()
}()
for _, query := range queries {
if _, err = tx.Exec(query); err != nil {
return err
}
}
if err = tx.Commit(); err != nil {
return err
}
return nil
}