Subversion Backups via Email

I wrote a simple subversion backup script that runs on my hosting provider, webfaction, and backs up my subversion repository. I have this script running in cron and sending periodic backups to gmail. However, it should work on any unix based system with python, gzip, and subversion. Simply set the SMTP settings (configured in the webfaction panel if you have webfaction), your email information and the path to subversion and run the script.

This script requires python 2.5 or 2.6. It will require modification under python 2.4.


!/usr/bin/env python2.6

import os
import smtplib
import time
import mimetypes
from datetime import datetime

# python 2.5/2.6 is required because the email library changed after 2.4
from email import encoders
from email.mime.multipart import MIMEMultipart
from email.mime.base import MIMEBase

# SMTP settings
SMTPUSER = 'YOURSMTPUSERNAME'
SMTPPASS = 'YOURSMTPPASSOWRD'
SMTPSERVER = 'smtp.webfaction.com'
SMTPPORT = 25

# who to address the email to and from
TO = 'YOUREMAIL@EXAMPLE.com'
FROM = 'backups@webfaction.com'

# svn location
SVN_LOCATION = 'PATH_TO_SVN_DIR'

# these probably do not need to be changed
SVN_BACKUP_FILE = 'svn.dump'
GZIP_BACKUP_FILE = SVN_BACKUP_FILE + '.gz'
BACKUP_LOCATION = '/tmp/'+SVN_BACKUP_FILE
ZIPPED_BACKUP = BACKUP_LOCATION+'.gz'
BACKUP_CMD = 'svnadmin dump '+SVN_LOCATION+' &gt; ' + BACKUP_LOCATION
GZIP_CMD = 'gzip -f '+BACKUP_LOCATION

print '*******************************************************'
print '** Backing up repository'
print '*******************************************************'
os.system(BACKUP_CMD)

print '*******************************************************'
print '** Zipping backup'
print '*******************************************************'
os.system(GZIP_CMD)

print '*******************************************************'
print '** Emailing backup'
print '*******************************************************'
msg = MIMEMultipart()
msg['Subject'] = 'Subversion Backup '+str(datetime.now())
msg['From'] = FROM
msg['To'] = list().append(TO)
msg.preample = 'Should not see this in a MIME-aware mail reader.\n'

# add the gzipped attachment
fp = open(ZIPPED_BACKUP, 'rb')
att = MIMEBase('application', 'gzip')
att.set_payload(fp.read())
encoders.encode_base64(att)
att.add_header('Content-Disposition', 'attachment', filename=GZIP_BACKUP_FILE)
fp.close()
msg.attach(att)

# Send the email via our own SMTP server.
s = smtplib.SMTP(SMTPSERVER, SMTPPORT)
s.ehlo()
s.starttls()
s.ehlo()
s.login(SMTPUSER, SMTPPASS)
s.sendmail(FROM, TO, msg.as_string())
s.quit()

# removing backup
os.remove(ZIPPED_BACKUP)

!/usr/bin/env python2.6

import os

import smtplib

import time

import mimetypes

from datetime import datetime

# python 2.5/2.6 is required because the email library changed after 2.4

from email import encoders

from email.mime.multipart import MIMEMultipart

from email.mime.base import MIMEBase

# SMTP settings

SMTPUSER = 'YOURSMTPUSERNAME'

SMTPPASS = 'YOURSMTPPASSOWRD'

SMTPSERVER = 'smtp.webfaction.com'

SMTPPORT = 25

# who to address the email to and from

TO = 'YOUREMAIL@EXAMPLE.com'

FROM = 'backups@webfaction.com'

# svn location

SVN_LOCATION = 'PATH_TO_SVN_DIR'

# these probably do not need to be changed

SVN_BACKUP_FILE = 'svn.dump'

GZIP_BACKUP_FILE = SVN_BACKUP_FILE + '.gz'

BACKUP_LOCATION = '/tmp/'+SVN_BACKUP_FILE

ZIPPED_BACKUP = BACKUP_LOCATION+'.gz'

BACKUP_CMD = 'svnadmin dump '+SVN_LOCATION+' > ' + BACKUP_LOCATION

GZIP_CMD = 'gzip -f '+BACKUP_LOCATION