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Viewing changes to hooks/charmhelpers/core/host.py

  • Committer: Liam Young
  • Date: 2014-08-13 14:14:12 UTC
  • mfrom: (50.1.1 ceilometer)
  • Revision ID: liam.young@canonical.com-20140813141412-1aka30eps05ypyzj
[gnuoy, rs=jamespage] Sync charm-helpers from lp:charm-helpers

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hooks/charmhelpers/core/host.py
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import string
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import subprocess
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import hashlib
 
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import shutil
 
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from contextlib import contextmanager
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from collections import OrderedDict
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def service_running(service):
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    """Determine whether a system service is running"""
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    try:
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        output = subprocess.check_output(['service', service, 'status'])
 
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        output = subprocess.check_output(['service', service, 'status'], stderr=subprocess.STDOUT)
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    except subprocess.CalledProcessError:
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        return False
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    else:
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            return False
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def service_available(service_name):
 
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    """Determine whether a system service is available"""
 
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    try:
 
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        subprocess.check_output(['service', service_name, 'status'], stderr=subprocess.STDOUT)
 
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    except subprocess.CalledProcessError:
 
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        return False
 
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    else:
 
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        return True
 
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def adduser(username, password=None, shell='/bin/bash', system_user=False):
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    """Add a user to the system"""
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    try:
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        pkgcache = apt_pkg.Cache()
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    pkg = pkgcache[package]
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    return apt_pkg.version_compare(pkg.current_ver.ver_str, revno)
 
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@contextmanager
 
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def chdir(d):
 
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    cur = os.getcwd()
 
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    try:
 
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        yield os.chdir(d)
 
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    finally:
 
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        os.chdir(cur)
 
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def chownr(path, owner, group):
 
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    uid = pwd.getpwnam(owner).pw_uid
 
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    gid = grp.getgrnam(group).gr_gid
 
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    for root, dirs, files in os.walk(path):
 
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        for name in dirs + files:
 
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            full = os.path.join(root, name)
 
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            broken_symlink = os.path.lexists(full) and not os.path.exists(full)
 
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            if not broken_symlink:
 
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                os.chown(full, uid, gid)