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tutils.go
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tutils.go
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package tutils
import (
"database/sql"
"fmt"
"log"
"os"
"strings"
)
// tUtils: A bunch of boilerplate that I end up using in different projects
func GetEnvVar(varName string, defaultValue string) string {
stringValue, isSet := os.LookupEnv(varName)
if !isSet {
return defaultValue
}
return stringValue
}
func GetDockerSecret(secretName string) string {
data, err := os.ReadFile(fmt.Sprintf("/run/secrets/%s", secretName))
if err != nil {
return ""
}
return string(data)
}
// Tobool is a helper function designed to take any string input and spit
// out the Go equivalent. Anything that isn't "true" (upper or lower)
// will return false. Useful for things like input from env vars.
func Tobool(value string) bool {
return strings.ToLower(value) == "true"
}
// CreateMySQLDatabaseInstance is a helper function that creates a new database connection
// to a MySQL database.
func CreateMySQLDatabaseInstance(dbHost string, dbUsername string, dbPassword string, dbSchema string, dbConnectionType string, dbOptionalParams string) *sql.DB {
db, err := sql.Open("mysql", fmt.Sprintf("%s:%s@%s(%s)/%s?%s", dbUsername, dbPassword, dbConnectionType, dbHost, dbSchema, dbOptionalParams))
if err != nil {
log.Fatal(err)
}
if err := db.Ping(); err != nil {
log.Fatal(err)
}
return db
}