/
repository.go
65 lines (56 loc) · 1.35 KB
/
repository.go
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package people
import (
"database/sql"
"log"
_ "github.com/go-sql-driver/mysql"
"github.com/PacktPublishing/Distributed-Tracing/chapter-04/go/lib/model"
)
const dburl = "root:mysqlpwd@tcp(127.0.0.1:3306)/chapter04"
// Repository retrieves information about people.
type Repository struct {
db *sql.DB
}
// NewRepository creates a new Repository backed by MySQL database.
func NewRepository() *Repository {
db, err := sql.Open("mysql", dburl)
if err != nil {
log.Fatal(err)
}
err = db.Ping()
if err != nil {
log.Fatalf("Cannot ping the db: %v", err)
}
return &Repository{
db: db,
}
}
// GetPerson tries to find the person in the database by name.
// If not found, it still returns a Person object with only name
// field populated.
func (r *Repository) GetPerson(name string) (model.Person, error) {
query := "select title, description from people where name = ?"
rows, err := r.db.Query(query, name)
if err != nil {
return model.Person{}, err
}
defer rows.Close()
for rows.Next() {
var title, descr string
err := rows.Scan(&title, &descr)
if err != nil {
return model.Person{}, err
}
return model.Person{
Name: name,
Title: title,
Description: descr,
}, nil
}
return model.Person{
Name: name,
}, nil
}
// Close calls close on the underlying db connection.
func (r *Repository) Close() {
r.db.Close()
}