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database.go
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database.go
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package server
import (
"database/sql"
"errors"
"fmt"
"log"
// Postgres driver
_ "github.com/lib/pq"
)
// InitDB initializes the database
func InitDB(dataSourceName string) (*sql.DB, error) {
db, err := sql.Open("postgres", dataSourceName)
if err != nil {
log.Panic(err)
}
if err = db.Ping(); err != nil {
log.Panic(err)
}
return db, err
}
func addRow(db *sql.DB, hash string, groupname string, username string) error {
if !isValidWebhookID(hash) {
return errors.New("invalid webhook id")
}
tx, err := db.Begin()
if err != nil {
return err
}
defer func() {
switch err {
case nil:
err = tx.Commit()
default:
tx.Rollback()
}
}()
sqlStatement := fmt.Sprintf("INSERT INTO qaas (hash, groupname, username) VALUES ($1, $2, $3)")
if _, err = tx.Exec(sqlStatement, hash, groupname, username); err != nil {
return err
}
return err
}
type item struct {
ID int
Hash string
Groupname string
Username string
}
func getRow(db *sql.DB, hash string) ([]item, error) {
rows, err := db.Query("SELECT id, hash, groupname, username FROM qaas WHERE hash = $1", hash)
if err != nil {
return nil, err
}
defer rows.Close()
var list []item
for rows.Next() {
p := item{}
if err := rows.Scan(&p.ID, &p.Hash, &p.Groupname, &p.Username); err != nil {
return nil, err
}
list = append(list, p)
}
if rows.Err() != nil {
return nil, err
}
return list, nil
}