← Back to branch summary

~nottrobin/charms/trusty/wsgi-app/trunk

« back to all changes in this revision

Viewing changes to hooks/charmhelpers/contrib/openstack/alternatives.py

  • Committer: Robin Winslow
  • Date: 2014-12-02 22:54:40 UTC
  • Revision ID: robin@robinwinslow.co.uk-20141202225440-ruuctvfe7pdh1dd8
Try reverting most of charmhelpers to the old version

Show diffs side-by-side

added added

removed removed

Lines of Context:
hooks/charmhelpers/contrib/openstack/alternatives.py
1
 
''' Helper for managing alternatives for file conflict resolution '''
2
 
 
3
 
import subprocess
4
 
import shutil
5
 
import os
6
 
 
7
 
 
8
 
def install_alternative(name, target, source, priority=50):
9
 
    ''' Install alternative configuration '''
10
 
    if (os.path.exists(target) and not os.path.islink(target)):
11
 
        # Move existing file/directory away before installing
12
 
        shutil.move(target, '{}.bak'.format(target))
13
 
    cmd = [
14
 
        'update-alternatives', '--force', '--install',
15
 
        target, name, source, str(priority)
16
 
    ]
17
 
    subprocess.check_call(cmd)