ddd26acc6d
* Move charmhelpers to the root of the charm * sync charmhelpers to latest version Change-Id: Id0b838f0206635cf912d205f2fb6fda7b31d0dfe
73 lines
1.9 KiB
Python
73 lines
1.9 KiB
Python
import subprocess
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import yum
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import os
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from charmhelpers.core.strutils import BasicStringComparator
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class CompareHostReleases(BasicStringComparator):
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"""Provide comparisons of Host releases.
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Use in the form of
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if CompareHostReleases(release) > 'trusty':
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# do something with mitaka
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"""
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def __init__(self, item):
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raise NotImplementedError(
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"CompareHostReleases() is not implemented for CentOS")
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def service_available(service_name):
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# """Determine whether a system service is available."""
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if os.path.isdir('/run/systemd/system'):
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cmd = ['systemctl', 'is-enabled', service_name]
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else:
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cmd = ['service', service_name, 'is-enabled']
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return subprocess.call(cmd) == 0
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def add_new_group(group_name, system_group=False, gid=None):
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cmd = ['groupadd']
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if gid:
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cmd.extend(['--gid', str(gid)])
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if system_group:
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cmd.append('-r')
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cmd.append(group_name)
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subprocess.check_call(cmd)
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def lsb_release():
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"""Return /etc/os-release in a dict."""
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d = {}
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with open('/etc/os-release', 'r') as lsb:
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for l in lsb:
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s = l.split('=')
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if len(s) != 2:
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continue
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d[s[0].strip()] = s[1].strip()
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return d
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def cmp_pkgrevno(package, revno, pkgcache=None):
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"""Compare supplied revno with the revno of the installed package.
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* 1 => Installed revno is greater than supplied arg
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* 0 => Installed revno is the same as supplied arg
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* -1 => Installed revno is less than supplied arg
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This function imports YumBase function if the pkgcache argument
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is None.
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"""
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if not pkgcache:
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y = yum.YumBase()
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packages = y.doPackageLists()
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pkgcache = {i.Name: i.version for i in packages['installed']}
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pkg = pkgcache[package]
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if pkg > revno:
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return 1
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if pkg < revno:
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return -1
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return 0
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