Created
October 15, 2015 13:44
-
-
Save creshal/e8221ae177ad6094e861 to your computer and use it in GitHub Desktop.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
#! /bin/python | |
import sys,os,time,glob,shutil | |
import subprocess as sp | |
def backup (src,dst): | |
src = sys.argv[1] | |
exclude_file = os.path.join (src,'.backup-exclude') | |
dst = sys.argv[2] | |
dst_dir = os.path.join (dst,'%i'%time.time()) | |
lnk_dir = get_old_backups (dst)[-1] | |
try: | |
rsync_call = ['rsync','-aHAxXP','--exclude=lost+found',src,dst_dir] | |
if lnk_dir: | |
rsync_call.append ('--link-dest='+lnk_dir) | |
if ':' in dst: | |
rsync_call.append ('-M--fake-super') | |
if os.path.exists (exclude_file): | |
rsync_call.append ('--exclude-from='+exclude_file) | |
print (' '.join (rsync_call)) | |
sp.check_call (rsync_call) | |
except sp.CalledProcessError as e: | |
print (e) | |
sys.exit (1) | |
prune_backups (dst) | |
def get_old_backups (dst): | |
if os.path.isdir (dst): | |
old_backups = list(map (os.path.abspath, glob.glob (dst+'/*'))) | |
else: | |
host,directory = dst.split(':',1) | |
directory = directory if directory.startswith('/') else '$PWD/'+directory | |
find_call = ['ssh',host,'find',directory,'-mindepth','1','-maxdepth','1', | |
'-type','d'] | |
old_backups = sp.check_output(find_call).decode('utf8').strip().split('\n') | |
if not len (old_backups): return | |
return sorted(old_backups) | |
def prune_backups (dst): | |
old_backups = get_old_backups (dst) | |
remote = not os.path.isdir(dst) | |
if remote: | |
host,directory = dst.split(':',1) | |
while len (old_backups) > 3: | |
print ('Pruning old backup '+old_backups[0]) | |
if remote: | |
try: | |
sp.call (['ssh',host,'rm','-r',old_backups.pop (0)]) | |
except sp.CalledProcessError as e: | |
print ('Failed to delete old backup:\n'+e) | |
else: | |
shutil.rmtree (old_backups.pop(0)) | |
if __name__ == '__main__': | |
if len(sys.argv) != 3 or '-h' in sys.argv: | |
print ('Usage: %s rsyncsource rsynctarget'%sys.argv[0]) | |
sys.exit () | |
backup (sys.argv[1],sys.argv[2]) |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment