Add SSH remote backup

pkg/backup.go

@@ -54,7 +54,7 @@ func StartBackup(cmd *cobra.Command) {
 		case "ssh":
 			sshBackup(backupFileName, s3Path, disableCompression, prune, backupRetention, encryption)
 		case "ftp":
-			fmt.Println("x is 3")
+			utils.Fatalf("Not supported storage type: %s", storage)
 		default:
 			localBackup(backupFileName, disableCompression, prune, backupRetention, encryption)
 		}
@@ -241,8 +241,35 @@ func s3Backup(backupFileName string, s3Path string, disableCompression bool, pru
 	}
 	utils.Done("Database has been backed up and uploaded to s3 ")
 }
-func sshBackup(backupFileName string, s3Path string, disableCompression bool, prune bool, backupRetention int, encrypt bool) {
+func sshBackup(backupFileName string, remotePath string, disableCompression bool, prune bool, backupRetention int, encrypt bool) {
+	utils.Info("Backup database to Remote server")
+	//Backup database
+	BackupDatabase(backupFileName, disableCompression)
+	finalFileName := backupFileName
+	if encrypt {
+		encryptBackup(backupFileName)
+		finalFileName = fmt.Sprintf("%s.%s", backupFileName, "gpg")
+	}
+	utils.Info("Uploading backup file to S3 storage...")
+	utils.Info("Backup name is ", backupFileName)
+	err := CopyToRemote(filepath.Join(tmpPath, finalFileName), remotePath)
+	if err != nil {
+		utils.Fatalf("Error uploading file to S3: %s ", err)
 
+	}
+	//Delete backup file from tmp folder
+	err = utils.DeleteFile(filepath.Join(tmpPath, finalFileName))
+	if err != nil {
+		fmt.Println("Error deleting file:", err)
+
+	}
+	if prune {
+		//TODO: Delete old backup from remote server
+		utils.Info("Deleting old backup from a remote server is not implemented yet")
+
+	}
+
+	utils.Done("Database has been backed up and uploaded to remote server ")
 }
 
 func encryptBackup(backupFileName string) {

pkg/scp.go

@@ -0,0 +1,100 @@
+package pkg
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"github.com/bramvdbogaerde/go-scp"
+	"github.com/bramvdbogaerde/go-scp/auth"
+	"github.com/jkaninda/pg-bkup/utils"
+	"golang.org/x/crypto/ssh"
+	"os"
+)
+
+func CopyToRemote(fileName, remotePath string) error {
+	sshUser := os.Getenv("SSH_USER")
+	sshPassword := os.Getenv("SSH_PASSWORD")
+	sshHostName := os.Getenv("SSH_HOST_NAME")
+	sshPort := os.Getenv("SSH_PORT")
+	sshIdentifyFile := os.Getenv("SSH_IDENTIFY_FILE")
+
+	clientConfig, _ := auth.PasswordKey(sshUser, sshPassword, ssh.InsecureIgnoreHostKey())
+	if sshIdentifyFile != "" && utils.FileExists(sshIdentifyFile) {
+		clientConfig, _ = auth.PrivateKey(sshUser, sshIdentifyFile, ssh.InsecureIgnoreHostKey())
+
+	} else {
+		if sshPassword == "" {
+			return errors.New("SSH_PASSWORD environment variable is required if SSH_IDENTIFY_FILE is empty\n")
+		}
+		clientConfig, _ = auth.PasswordKey(sshUser, sshPassword, ssh.InsecureIgnoreHostKey())
+
+	}
+	// Create a new SCP client
+	client := scp.NewClient(fmt.Sprintf("%s:%s", sshHostName, sshPort), &clientConfig)
+
+	// Connect to the remote server
+	err := client.Connect()
+	if err != nil {
+		return errors.New("Couldn't establish a connection to the remote server\n")
+	}
+
+	// Open a file
+	file, _ := os.Open(fileName)
+
+	// Close client connection after the file has been copied
+	defer client.Close()
+	// Close the file after it has been copied
+	defer file.Close()
+	// the context can be adjusted to provide time-outs or inherit from other contexts if this is embedded in a larger application.
+	err = client.CopyFromFile(context.Background(), *file, remotePath, "0655")
+	if err != nil {
+		fmt.Println("Error while copying file ")
+		return err
+	}
+	return nil
+}
+
+func CopyFromRemote(fileName, remotePath string) error {
+	sshUser := os.Getenv("SSH_USER")
+	sshPassword := os.Getenv("SSH_PASSWORD")
+	sshHostName := os.Getenv("SSH_HOST_NAME")
+	sshPort := os.Getenv("SSH_PORT")
+	sshIdentifyFile := os.Getenv("SSH_IDENTIFY_FILE")
+
+	clientConfig, _ := auth.PasswordKey(sshUser, sshPassword, ssh.InsecureIgnoreHostKey())
+	if sshIdentifyFile != "" && utils.FileExists(sshIdentifyFile) {
+		clientConfig, _ = auth.PrivateKey(sshUser, sshIdentifyFile, ssh.InsecureIgnoreHostKey())
+
+	} else {
+		if sshPassword == "" {
+			return errors.New("SSH_PASSWORD environment variable is required if SSH_IDENTIFY_FILE is empty\n")
+		}
+		clientConfig, _ = auth.PasswordKey(sshUser, sshPassword, ssh.InsecureIgnoreHostKey())
+
+	}
+
+	// Create a new SCP client
+	client := scp.NewClient(fmt.Sprintf("%s:%s", sshHostName, sshPort), &clientConfig)
+	// Connect to the remote server
+	err := client.Connect()
+	if err != nil {
+		return errors.New("Couldn't establish a connection to the remote server\n")
+	}
+	// Close client connection after the file has been copied
+	defer client.Close()
+	file, err := os.OpenFile(fileName, os.O_RDWR|os.O_CREATE, 0777)
+	if err != nil {
+		fmt.Println("Couldn't open the output file")
+	}
+	defer file.Close()
+
+	// the context can be adjusted to provide time-outs or inherit from other contexts if this is embedded in a larger application.
+	err = client.CopyFromRemote(context.Background(), file, remotePath)
+
+	if err != nil {
+		fmt.Println("Error while copying file ", err)
+		return err
+	}
+	return nil
+
+}