refactor: refactoring of code

main.go

@@ -72,10 +72,10 @@ func init() {
 	disableCompression = *disableCompressionFlag
 
 	flag.Usage = func() {
-		fmt.Print("MySQL Backup and Restoration tool. Backup database to AWS S3 storage or any S3 Alternatives for Object Storage.\n\n")
+		fmt.Print("MySQL BackupDatabase and Restoration tool. BackupDatabase database to AWS S3 storage or any S3 Alternatives for Object Storage.\n\n")
 		fmt.Print("Usage: bkup --operation backup -storage s3 --dbname databasename --path /my_path ...\n")
 		fmt.Print("       bkup -o backup -d databasename --disable-compression ...\n")
-		fmt.Print("       Restore: bkup -o restore -d databasename -f db_20231217_051339.sql.gz ...\n\n")
+		fmt.Print("       RestoreDatabase: bkup -o restore -d databasename -f db_20231217_051339.sql.gz ...\n\n")
 		flag.PrintDefaults()
 	}
 
@@ -159,18 +159,18 @@ func start() {
 	if executionMode == "default" {
 		if operation != "backup" {
 			if storage != "s3" {
-				utils.Info("Restore from local")
+				utils.Info("RestoreDatabase from local")
-				pkg.Restore(file)
+				pkg.RestoreDatabase(file)
 			} else {
-				utils.Info("Restore from s3")
+				utils.Info("RestoreDatabase from s3")
 				s3Restore()
 			}
 		} else {
 			if storage != "s3" {
-				utils.Info("Backup to local storage")
+				utils.Info("BackupDatabase to local storage")
-				pkg.Backup(disableCompression)
+				pkg.BackupDatabase(disableCompression)
 			} else {
-				utils.Info("Backup to s3 storage")
+				utils.Info("BackupDatabase to s3 storage")
 				s3Backup()
 			}
 		}
@@ -182,9 +182,9 @@ func start() {
 }
 
 func s3Backup() {
-	// Backup to S3 storage
+	// Backup Database to S3 storage
 	pkg.MountS3Storage(s3Path)
-	pkg.Backup(disableCompression)
+	pkg.BackupDatabase(disableCompression)
 }
 
 // Run in scheduled mode
@@ -218,5 +218,5 @@ func scheduledMode() {
 func s3Restore() {
 	// Restore database from S3
 	pkg.MountS3Storage(s3Path)
-	pkg.Restore(file)
+	pkg.RestoreDatabase(file)
 }

pkg/backup.go

@@ -22,8 +22,8 @@ var (
 	storagePath = "/backup"
 )
 
-// Backup backup database
+// BackupDatabase backup database
-func Backup(disableCompression bool) {
+func BackupDatabase(disableCompression bool) {
 	dbHost = os.Getenv("DB_HOST")
 	dbPassword = os.Getenv("DB_PASSWORD")
 	dbUserName = os.Getenv("DB_USERNAME")
@@ -35,7 +35,7 @@ func Backup(disableCompression bool) {
 		utils.Fatal("Please make sure all required environment variables for database are set")
 	} else {
 		utils.TestDatabaseConnection()
-		// Backup database
+		// Backup Database database
 		utils.Info("Backing up database...")
 		bkFileName := fmt.Sprintf("%s_%s.sql.gz", dbName, time.Now().Format("20060102_150405"))
 

pkg/restore.go

@@ -8,8 +8,8 @@ import (
 	"path/filepath"
 )
 
-// Restore restore database
+// RestoreDatabase restore database
-func Restore(file string) {
+func RestoreDatabase(file string) {
 	dbHost = os.Getenv("DB_HOST")
 	dbPassword = os.Getenv("DB_PASSWORD")
 	dbUserName = os.Getenv("DB_USERNAME")

pkg/s3fs.go

@@ -21,15 +21,13 @@ var (
 	s3Endpoint = ""
 )
 
-func init() {
+// MountS3Storage Mount s3 storage using s3fs
+func MountS3Storage(s3Path string) {
 	accessKey = os.Getenv("ACCESS_KEY")
 	secretKey = os.Getenv("SECRET_KEY")
 	bucketName = os.Getenv("BUCKETNAME")
 	s3Endpoint = os.Getenv("S3_ENDPOINT")
-}
 
-// MountS3Storage Mount s3 storage using s3fs
-func MountS3Storage(s3Path string) {
 	if accessKey == "" || secretKey == "" || bucketName == "" {
 		utils.Fatal("Please make sure all environment variables are set")
 	} else {

pkg/scripts.go

@@ -11,14 +11,14 @@ import (
 	"os/exec"
 )
 
-func init() {
+const cronLogFile = "/var/log/mysql-bkup.log"
+const backupCronFile = "/usr/local/bin/backup_cron.sh"
 
-}
 func CreateCrontabScript(disableCompression bool, storage string) {
-	task := "/usr/local/bin/backup_cron.sh"
+	//task := "/usr/local/bin/backup_cron.sh"
-	touchCmd := exec.Command("touch", task)
+	touchCmd := exec.Command("touch", backupCronFile)
 	if err := touchCmd.Run(); err != nil {
-		utils.Fatalf("Error creating file %s: %v\n", task, err)
+		utils.Fatalf("Error creating file %s: %v\n", backupCronFile, err)
 	}
 	var disableC = ""
 	if disableCompression {
@@ -39,13 +39,13 @@ bkup --operation backup --dbname %s --port %s %v
 `, os.Getenv("DB_NAME"), os.Getenv("DB_PORT"), disableC)
 	}
 
-	if err := utils.WriteToFile(task, scriptContent); err != nil {
+	if err := utils.WriteToFile(backupCronFile, scriptContent); err != nil {
-		utils.Fatalf("Error writing to %s: %v\n", task, err)
+		utils.Fatalf("Error writing to %s: %v\n", backupCronFile, err)
 	}
 
 	chmodCmd := exec.Command("chmod", "+x", "/usr/local/bin/backup_cron.sh")
 	if err := chmodCmd.Run(); err != nil {
-		utils.Fatalf("Error changing permissions of %s: %v\n", task, err)
+		utils.Fatalf("Error changing permissions of %s: %v\n", backupCronFile, err)
 	}
 
 	lnCmd := exec.Command("ln", "-s", "/usr/local/bin/backup_cron.sh", "/usr/local/bin/backup_cron")
@@ -60,8 +60,8 @@ bkup --operation backup --dbname %s --port %s %v
 		utils.Fatalf("Error creating file %s: %v\n", cronJob, err)
 	}
 
-	cronContent := fmt.Sprintf(`%s root exec /bin/bash -c ". /run/supervisord.env; /usr/local/bin/backup_cron.sh >> /var/log/mysql-bkup.log"
+	cronContent := fmt.Sprintf(`%s root exec /bin/bash -c ". /run/supervisord.env; /usr/local/bin/backup_cron.sh >> %s"
-`, os.Getenv("SCHEDULE_PERIOD"))
+`, os.Getenv("SCHEDULE_PERIOD"), cronLogFile)
 
 	if err := utils.WriteToFile(cronJob, cronContent); err != nil {
 		utils.Fatalf("Error writing to %s: %v\n", cronJob, err)