1ad934bd49
Refresh and rebuild charm for awareness of Dalmatian and Epoxy Cloud Archive releases. Change-Id: I77a2390481856ae3d78a619794bccd8378e338c1
128 lines
2.9 KiB
Python
128 lines
2.9 KiB
Python
import subprocess
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from charmhelpers.core.hookenv import cached
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from charmhelpers.core.strutils import BasicStringComparator
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UBUNTU_RELEASES = (
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'lucid',
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'maverick',
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'natty',
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'oneiric',
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'precise',
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'quantal',
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'raring',
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'saucy',
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'trusty',
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'utopic',
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'vivid',
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'wily',
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'xenial',
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'yakkety',
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'zesty',
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'artful',
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'bionic',
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'cosmic',
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'disco',
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'eoan',
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'focal',
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'groovy',
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'hirsute',
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'impish',
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'jammy',
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'kinetic',
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'lunar',
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'mantic',
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'noble',
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'oracular',
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)
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class CompareHostReleases(BasicStringComparator):
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"""Provide comparisons of Ubuntu 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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_list = UBUNTU_RELEASES
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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(
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['service', service_name, 'status'],
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stderr=subprocess.STDOUT).decode('UTF-8')
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except subprocess.CalledProcessError as e:
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return b'unrecognized service' not in e.output
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else:
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return True
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def add_new_group(group_name, system_group=False, gid=None):
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cmd = ['addgroup']
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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('--system')
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else:
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cmd.extend([
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'--group',
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])
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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/lsb-release in a dict"""
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d = {}
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with open('/etc/lsb-release', 'r') as lsb:
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for l in lsb:
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k, v = l.split('=')
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d[k.strip()] = v.strip()
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return d
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def get_distrib_codename():
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"""Return the codename of the distribution
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:returns: The codename
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:rtype: str
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"""
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return lsb_release()['DISTRIB_CODENAME'].lower()
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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 apt_cache function from charmhelpers.fetch if
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the pkgcache argument is None. Be sure to add charmhelpers.fetch if
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you call this function, or pass an apt_pkg.Cache() instance.
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"""
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from charmhelpers.fetch import apt_pkg, get_installed_version
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if not pkgcache:
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current_ver = get_installed_version(package)
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else:
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pkg = pkgcache[package]
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current_ver = pkg.current_ver
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return apt_pkg.version_compare(current_ver.ver_str, revno)
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@cached
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def arch():
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"""Return the package architecture as a string.
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:returns: the architecture
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:rtype: str
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:raises: subprocess.CalledProcessError if dpkg command fails
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"""
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return subprocess.check_output(
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['dpkg', '--print-architecture']
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).rstrip().decode('UTF-8')
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