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database.go
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/
database.go
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package main
import (
"database/sql"
"fmt"
"os"
"time"
_ "github.com/go-sql-driver/mysql"
_ "github.com/joho/godotenv/autoload"
"github.com/rs/zerolog/log"
"github.com/volatiletech/sqlboiler/v4/boil"
)
func getDatabase() *sql.DB {
// Start database connection
connStr := fmt.Sprintf(`%v:%v@tcp(%v:%v)/%v`,
os.Getenv("DATABASE_USER"),
os.Getenv("DATABASE_PASSWORD"),
os.Getenv("DATABASE_HOST"),
os.Getenv("DATABASE_PORT"),
os.Getenv("DATABASE_NAME"),
)
if os.Getenv("DATABASE_DEBUG") == "true" {
boil.DebugMode = true
}
// Open handle to database like normal
db, err := sql.Open("mysql", connStr)
if err != nil {
log.Fatal().Err(err).Msg("could not open database connection")
}
// https://www.alexedwards.net/blog/configuring-sqldb
db.SetMaxOpenConns(25)
db.SetMaxIdleConns(25)
db.SetConnMaxLifetime(5 * time.Minute)
if err = db.Ping(); err != nil {
log.Fatal().Err(err).Msg("no real database connection")
}
return db
}