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lvmdbusd: Remove duplicate code

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The logic for _cache_lv and _writecache_lv was identical except for which
underlying lvm command to run.  Factor out common.
This commit is contained in:
Tony Asleson 2022-08-31 15:42:48 -05:00
parent f4c03faa65
commit e977b70bfb
1 changed files with 10 additions and 30 deletions
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38
daemons/lvmdbusd/lv.py
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@ -751,7 +751,7 @@ class Lv(LvCommon):
cfg.worker_q.put(r)
@staticmethod
def _writecache_lv(lv_uuid, lv_name, lv_object_path, cache_options):
def _caching_common(method, lv_uuid, lv_name, lv_object_path, cache_options):
# Make sure we have a dbus object representing it
dbo = LvCommon.validate_dbus_object(lv_uuid, lv_name)
@ -760,7 +760,7 @@ class Lv(LvCommon):
if lv_to_cache:
fcn = lv_to_cache.lv_full_name()
rc, out, err = cmdhandler.lv_writecache_lv(
rc, out, err = method(
dbo.lv_full_name(), fcn, cache_options)
if rc == 0:
# When we cache an LV, the cache pool and the lv that is getting
@ -780,6 +780,11 @@ class Lv(LvCommon):
lv_object_path)
return lv_converted
@staticmethod
def _writecache_lv(lv_uuid, lv_name, lv_object_path, cache_options):
return Lv._caching_common(cmdhandler.lv_writecache_lv, lv_uuid,
lv_name, lv_object_path, cache_options)
@dbus.service.method(
dbus_interface=LV_INTERFACE,
in_signature='oia{sv}',
@ -959,33 +964,8 @@ class LvCachePool(Lv):
@staticmethod
def _cache_lv(lv_uuid, lv_name, lv_object_path, cache_options):
# Make sure we have a dbus object representing cache pool
dbo = LvCommon.validate_dbus_object(lv_uuid, lv_name)
# Make sure we have dbus object representing lv to cache
lv_to_cache = cfg.om.get_object_by_path(lv_object_path)
if lv_to_cache:
fcn = lv_to_cache.lv_full_name()
rc, out, err = cmdhandler.lv_cache_lv(
dbo.lv_full_name(), fcn, cache_options)
if rc == 0:
# When we cache an LV, the cache pool and the lv that is getting
# cached need to be removed from the object manager and
# re-created as their interfaces have changed!
mt_remove_dbus_objects((dbo, lv_to_cache))
cfg.load()
lv_converted = cfg.om.get_object_path_by_lvm_id(fcn)
else:
raise dbus.exceptions.DBusException(
LV_INTERFACE,
'Exit code %s, stderr = %s' % (str(rc), err))
else:
raise dbus.exceptions.DBusException(
LV_INTERFACE, 'LV to cache with object path %s not present!' %
lv_object_path)
return lv_converted
return Lv._caching_common(cmdhandler.lv_cache_lv, lv_uuid, lv_name,
lv_object_path, cache_options)
@dbus.service.method(
dbus_interface=CACHE_POOL_INTERFACE,