jkaninda/pg-bkup
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Add backup encryption and decryption with GPG

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This commit is contained in:
Jonas Kaninda
2024-07-29 23:03:28 +02:00
parent a8fa58dacb
commit c277228ab3
10 changed files with 247 additions and 105 deletions
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124
pkg/backup.go
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@@ -18,7 +18,6 @@ import (
func StartBackup(cmd *cobra.Command) {
_, _ = cmd.Flags().GetString("operation")
//Set env
utils.SetEnv("STORAGE_PATH", storagePath)
utils.GetEnv(cmd, "dbname", "DB_NAME")
@@ -29,12 +28,16 @@ func StartBackup(cmd *cobra.Command) {
s3Path = utils.GetEnv(cmd, "path", "S3_PATH")
storage = utils.GetEnv(cmd, "storage", "STORAGE")
file = utils.GetEnv(cmd, "file", "FILE_NAME")
keepLast, _ := cmd.Flags().GetInt("keep-last")
backupRetention, _ := cmd.Flags().GetInt("keep-last")
prune, _ := cmd.Flags().GetBool("prune")
disableCompression, _ = cmd.Flags().GetBool("disable-compression")
executionMode, _ = cmd.Flags().GetString("mode")
dbName = os.Getenv("DB_NAME")
storagePath = os.Getenv("STORAGE_PATH")
gpgPassphrase := os.Getenv("GPG_PASSPHRASE")
//
if gpgPassphrase != "" {
encryption = true
}
//Generate file name
backupFileName := fmt.Sprintf("%s_%s.sql.gz", dbName, time.Now().Format("20060102_150405"))
@@ -46,20 +49,17 @@ func StartBackup(cmd *cobra.Command) {
switch storage {
case "s3":
utils.Info("Backup database to s3 storage")
BackupDatabase(backupFileName, disableCompression, prune, keepLast)
s3Upload(backupFileName, s3Path)
s3Backup(backupFileName, s3Path, disableCompression, prune, backupRetention, encryption)
case "local":
utils.Info("Backup database to local storage")
BackupDatabase(backupFileName, disableCompression, prune, keepLast)
moveToBackup(backupFileName, storagePath)
localBackup(backupFileName, disableCompression, prune, backupRetention, encryption)
case "ssh":
fmt.Println("x is 2")
case "ftp":
fmt.Println("x is 3")
default:
utils.Info("Backup database to local storage")
BackupDatabase(backupFileName, disableCompression, prune, keepLast)
moveToBackup(backupFileName, storagePath)
localBackup(backupFileName, disableCompression, prune, backupRetention, encryption)
}
} else if executionMode == "scheduled" {
@@ -117,7 +117,7 @@ func scheduledMode() {
}
// BackupDatabase backup database
func BackupDatabase(backupFileName string, disableCompression bool, prune bool, keepLast int) {
func BackupDatabase(backupFileName string, disableCompression bool) {
dbHost = os.Getenv("DB_HOST")
dbPassword = os.Getenv("DB_PASSWORD")
dbUserName = os.Getenv("DB_USERNAME")
@@ -190,43 +190,38 @@ func BackupDatabase(backupFileName string, disableCompression bool, prune bool,
}
}
utils.Done("Database has been backed up")
utils.Info("Database has been backed up")
//Delete old backup
//if prune {
// deleteOldBackup(keepLast)
//}
historyFile, err := os.OpenFile(fmt.Sprintf("%s/history.txt", tmpPath), os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
if err != nil {
log.Fatal(err)
}
defer historyFile.Close()
if _, err := historyFile.WriteString(backupFileName + "\n"); err != nil {
log.Fatal(err)
}
}
}
func moveToBackup(backupFileName string, destinationPath string) {
//Copy backup from tmp folder to storage destination
err := utils.CopyFile(filepath.Join(tmpPath, backupFileName), filepath.Join(destinationPath, backupFileName))
if err != nil {
utils.Fatal("Error copying file ", backupFileName, err)
func localBackup(backupFileName string, disableCompression bool, prune bool, backupRetention int, encrypt bool) {
utils.Info("Backup database to local storage")
BackupDatabase(backupFileName, disableCompression)
finalFileName := backupFileName
if encrypt {
encryptBackup(backupFileName)
finalFileName = fmt.Sprintf("%s.%s", backupFileName, gpgExtension)
}
//Delete backup file from tmp folder
err = utils.DeleteFile(filepath.Join(tmpPath, backupFileName))
if err != nil {
fmt.Println("Error deleting file:", err)
moveToBackup(finalFileName, storagePath)
//Delete old backup
if prune {
deleteOldBackup(backupRetention)
}
utils.Done("Database has been backed up and copied to destination ")
}
func s3Upload(backupFileName string, s3Path string) {
func s3Backup(backupFileName string, s3Path string, disableCompression bool, prune bool, backupRetention int, encrypt bool) {
bucket := os.Getenv("BUCKET_NAME")
storagePath = os.Getenv("STORAGE_PATH")
//Backup database
BackupDatabase(backupFileName, disableCompression)
finalFileName := backupFileName
if encrypt {
encryptBackup(backupFileName)
finalFileName = fmt.Sprintf("%s.%s", backupFileName, "gpg")
}
utils.Info("Uploading file to S3 storage")
err := utils.UploadFileToS3(tmpPath, backupFileName, bucket, s3Path)
err := utils.UploadFileToS3(tmpPath, finalFileName, bucket, s3Path)
if err != nil {
utils.Fatalf("Error uploading file to S3: %s ", err)
@@ -238,51 +233,22 @@ func s3Upload(backupFileName string, s3Path string) {
fmt.Println("Error deleting file:", err)
}
// Delete old backup
if prune {
err := utils.DeleteOldBackup(bucket, s3Path, backupRetention)
if err != nil {
utils.Fatalf("Error deleting old backup from S3: %s ", err)
}
}
utils.Done("Database has been backed up and uploaded to s3 ")
}
func s3Backup(backupFileName string, disableCompression bool, s3Path string, prune bool, keepLast int) {
// Backup Database to S3 storage
//MountS3Storage(s3Path)
//BackupDatabase(backupFileName, disableCompression, prune, keepLast)
}
func deleteOldBackup(keepLast int) {
utils.Info("Deleting old backups...")
storagePath = os.Getenv("STORAGE_PATH")
// Define the directory path
backupDir := storagePath + "/"
// Get current time
currentTime := time.Now()
// Delete file
deleteFile := func(filePath string) error {
err := os.Remove(filePath)
if err != nil {
utils.Fatal("Error:", err)
} else {
utils.Done("File ", filePath, " deleted successfully")
}
return err
}
// Walk through the directory and delete files modified more than specified days ago
err := filepath.Walk(backupDir, func(filePath string, fileInfo os.FileInfo, err error) error {
if err != nil {
return err
}
// Check if it's a regular file and if it was modified more than specified days ago
if fileInfo.Mode().IsRegular() {
timeDiff := currentTime.Sub(fileInfo.ModTime())
if timeDiff.Hours() > 24*float64(keepLast) {
err := deleteFile(filePath)
if err != nil {
return err
}
}
}
return nil
})
func encryptBackup(backupFileName string) {
gpgPassphrase := os.Getenv("GPG_PASSPHRASE")
err := Encrypt(filepath.Join(tmpPath, backupFileName), gpgPassphrase)
if err != nil {
utils.Fatal("Error:", err)
return
utils.Fatalf("Error during encrypting backup %s", err)
}
}