def clear(self, ctype='all'):
with zvmutils.acquire_lock(self._lock):
if ctype == 'all':
self._reset()
else:
target_cache = self._get_ctype_cache(ctype)
target_cache['data'] = {}
def get(self, ctype, key):
with zvmutils.acquire_lock(self._lock):
target_cache = self._get_ctype_cache(ctype)
if (time.time() > target_cache['expiration']):
return None
else:
return target_cache['data'].get(key, None)
def _reset(self, types):
with zvmutils.acquire_lock(self._lock):
for type in types:
self._cache[type] = {
'expiration': time.time(),
'data': {},
}
def refresh(self, ctype, data):
with zvmutils.acquire_lock(self._lock):
self.clear(ctype)
target_cache = self._get_ctype_cache(ctype)
target_cache['expiration'] = (time.time() +
float(CONF.monitor.cache_interval))
for (k, v) in data.items():
self.set(ctype, k, v)
def set(self, ctype, key, data):
"""Set or update cache content.
:param ctype: cache type
:param key: the key to be set value
:param data: cache data
"""
with zvmutils.acquire_lock(self._lock):
target_cache = self._get_ctype_cache(ctype)
target_cache['data'][key] = data
def volume_refresh_bootmap(self, fcpchannels, wwpns, lun,
transportfiles=None, guest_networks=None):
ret = None
with zvmutils.acquire_lock(self._lock):
LOG.debug('Enter lock scope of volume_refresh_bootmap.')
ret = self._smtclient.volume_refresh_bootmap(fcpchannels, wwpns,
lun, transportfiles=transportfiles,
guest_networks=guest_networks)
LOG.debug('Exit lock of volume_refresh_bootmap with ret %s.' % ret)
return ret
def volume_refresh_bootmap(self, fcpchannels, wwpns, lun, skipzipl=False):
""" Refresh a volume's bootmap info.
:param list of fcpchannels
:param list of wwpns
:param string lun
:param boolean skipzipl: whether ship zipl, only return physical wwpns
"""
ret = None
with zvmutils.acquire_lock(self._lock):
LOG.debug('Enter lock scope of volume_refresh_bootmap.')
ret = self._smtclient.volume_refresh_bootmap(fcpchannels, wwpns,
lun,
skipzipl=skipzipl)
LOG.debug('Exit lock of volume_refresh_bootmap with ret %s.' % ret)
return ret
def delete(self, ctype, key):
with zvmutils.acquire_lock(self._lock):
target_cache = self._get_ctype_cache(ctype)
if key in target_cache['data']:
del target_cache['data'][key]