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systemd.py: Speed up available()

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Instead of gathering and iterating over all known units we can just ask
systemd about a given unit to check if it's available.
This commit is contained in:
Lukas Braun 2015-11-18 15:26:50 +01:00
parent 984a076d9a
commit 17b4538567
1 changed files with 11 additions and 10 deletions
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21
salt/modules/systemd.py
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@ -349,17 +349,18 @@ def available(name):
salt '*' service.available sshd
'''
name = _canonical_template_unit_name(name)
if name.endswith('.service'):
name = name[:-8] # len('.service') is 8
units = get_all()
if name in units:
name = _canonical_unit_name(name)
list_unit = 'systemctl --full --no-legend --no-pager list-units ' + name
matched_units = __salt__['cmd.run_stdout'](list_unit)
if len(matched_units) > 0:
return True
elif '@' in name:
templatename = name[:name.find('@') + 1]
return templatename in units
else:
return False
# Units such as getty@tty1.service appear in list-units only if they are
# already running, so we have to check list-unit-files for getty@.service
# aswell.
name = _canonical_template_unit_name(name)
list_unit_file = 'systemctl --full --no-legend --no-pager list-unit-files ' + name
matched_files = __salt__['cmd.run_stdout'](list_unit_file)
return len(matched_files) > 0
def missing(name):