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-rw-r--r--contrail-controller/hooks/charmhelpers/core/host_factory/ubuntu.py89
1 files changed, 89 insertions, 0 deletions
diff --git a/contrail-controller/hooks/charmhelpers/core/host_factory/ubuntu.py b/contrail-controller/hooks/charmhelpers/core/host_factory/ubuntu.py
new file mode 100644
index 0000000..d8dc378
--- /dev/null
+++ b/contrail-controller/hooks/charmhelpers/core/host_factory/ubuntu.py
@@ -0,0 +1,89 @@
+import subprocess
+
+from charmhelpers.core.strutils import BasicStringComparator
+
+
+UBUNTU_RELEASES = (
+ 'lucid',
+ 'maverick',
+ 'natty',
+ 'oneiric',
+ 'precise',
+ 'quantal',
+ 'raring',
+ 'saucy',
+ 'trusty',
+ 'utopic',
+ 'vivid',
+ 'wily',
+ 'xenial',
+ 'yakkety',
+ 'zesty',
+ 'artful',
+)
+
+
+class CompareHostReleases(BasicStringComparator):
+ """Provide comparisons of Ubuntu releases.
+
+ Use in the form of
+
+ if CompareHostReleases(release) > 'trusty':
+ # do something with mitaka
+ """
+ _list = UBUNTU_RELEASES
+
+
+def service_available(service_name):
+ """Determine whether a system service is available"""
+ try:
+ subprocess.check_output(
+ ['service', service_name, 'status'],
+ stderr=subprocess.STDOUT).decode('UTF-8')
+ except subprocess.CalledProcessError as e:
+ return b'unrecognized service' not in e.output
+ else:
+ return True
+
+
+def add_new_group(group_name, system_group=False, gid=None):
+ cmd = ['addgroup']
+ if gid:
+ cmd.extend(['--gid', str(gid)])
+ if system_group:
+ cmd.append('--system')
+ else:
+ cmd.extend([
+ '--group',
+ ])
+ cmd.append(group_name)
+ subprocess.check_call(cmd)
+
+
+def lsb_release():
+ """Return /etc/lsb-release in a dict"""
+ d = {}
+ with open('/etc/lsb-release', 'r') as lsb:
+ for l in lsb:
+ k, v = l.split('=')
+ d[k.strip()] = v.strip()
+ return d
+
+
+def cmp_pkgrevno(package, revno, pkgcache=None):
+ """Compare supplied revno with the revno of the installed package.
+
+ * 1 => Installed revno is greater than supplied arg
+ * 0 => Installed revno is the same as supplied arg
+ * -1 => Installed revno is less than supplied arg
+
+ This function imports apt_cache function from charmhelpers.fetch if
+ the pkgcache argument is None. Be sure to add charmhelpers.fetch if
+ you call this function, or pass an apt_pkg.Cache() instance.
+ """
+ import apt_pkg
+ if not pkgcache:
+ from charmhelpers.fetch import apt_cache
+ pkgcache = apt_cache()
+ pkg = pkgcache[package]
+ return apt_pkg.version_compare(pkg.current_ver.ver_str, revno)