def growL1Cache(self, sp, cacheL1, cacheL2, assigned):
'''
This method tries to enlarge L1 cache.
If for some reason the number of deployed services (Counting all, ACTIVE
and PREPARING, assigned, L1 and L2) is over max allowed service deployments,
this method will not grow the L1 cache
'''
logger.debug("Growing L1 cache creating a new service for {0}".format(sp))
# First, we try to assign from L2 cache
if cacheL2 > 0:
valid = None
with transaction.atomic():
for n in sp.cachedUserServices().select_for_update().filter(UserServiceManager.getCacheStateFilter(services.UserDeployment.L2_CACHE)).order_by('creation_date'):
if n.needsOsManager():
if State.isUsable(n.state) is False or State.isUsable(n.os_state):
valid = n
break
else:
valid = n
break
if valid is not None:
valid.moveToLevel(services.UserDeployment.L1_CACHE)
return
try:
UserServiceManager.manager().createCacheFor(sp.activePublication(), services.UserDeployment.L1_CACHE)
except MaxServicesReachedException as e:
log.doLog(sp, log.ERROR, 'Max number of services reached for this service', log.INTERNAL)
logger.error(str(e))
except:
logger.exception('Exception')
def reduceL1Cache(self, sp, cacheL1, cacheL2, assigned):
logger.debug("Reducing L1 cache erasing a service in cache for {0}".format(sp))
# We will try to destroy the newest cacheL1 element that is USABLE if the deployer can't cancel a new service creation
cacheItems = sp.cachedUserServices().filter(UserServiceManager.getCacheStateFilter(services.UserDeployment.L1_CACHE)).order_by('-creation_date')
if len(cacheItems) == 0:
logger.debug('There is more services than configured, but could not reduce cache cause its already empty')
return
if cacheL2 < sp.cache_l2_srvs:
valid = None
for n in cacheItems:
if n.needsOsManager():
if State.isUsable(n.state) is False or State.isUsable(n.os_state):
valid = n
break
else:
valid = n
break
if valid is not None:
valid.moveToLevel(services.UserDeployment.L2_CACHE)
return
cache = cacheItems[0]
cache.removeOrCancel()
def reduceL1Cache(self, sp, cacheL1, cacheL2, assigned):
logger.debug(
"Reducing L1 cache erasing a service in cache for {0}".format(sp))
# We will try to destroy the newest cacheL1 element that is USABLE if the deployer can't cancel a new service creation
cacheItems = sp.cachedUserServices().filter(
UserServiceManager.getCacheStateFilter(
services.UserDeployment.L1_CACHE)).order_by('-creation_date')
if len(cacheItems) == 0:
logger.debug(
'There is more services than configured, but could not reduce cache cause its already empty'
)
return
if cacheL2 < sp.cache_l2_srvs:
valid = None
for n in cacheItems:
if n.needsOsManager():
if State.isUsable(n.state) is False or State.isUsable(
n.os_state):
valid = n
break
else:
valid = n
break
if valid is not None:
valid.moveToLevel(services.UserDeployment.L2_CACHE)
return
cache = cacheItems[0]
cache.removeOrCancel()
def growL1Cache(self, sp, cacheL1, cacheL2, assigned):
"""
This method tries to enlarge L1 cache.
If for some reason the number of deployed services (Counting all, ACTIVE
and PREPARING, assigned, L1 and L2) is over max allowed service deployments,
this method will not grow the L1 cache
"""
logger.debug(
"Growing L1 cache creating a new service for {0}".format(sp))
# First, we try to assign from L2 cache
if cacheL2 > 0:
valid = None
with transaction.atomic():
for n in sp.cachedUserServices().select_for_update().filter(
UserServiceManager.getCacheStateFilter(
services.UserDeployment.L2_CACHE)).order_by(
'creation_date'):
if n.needsOsManager():
if State.isUsable(n.state) is False or State.isUsable(
n.os_state):
valid = n
break
else:
valid = n
break
if valid is not None:
valid.moveToLevel(services.UserDeployment.L1_CACHE)
return
try:
UserServiceManager.manager().createCacheFor(
sp.activePublication(), services.UserDeployment.L1_CACHE)
except MaxServicesReachedError as e:
log.doLog(sp, log.ERROR,
'Max number of services reached for this service',
log.INTERNAL)
logger.error(str(e))
except:
logger.exception('Exception')
def unpublish(self, servicePoolPub): # pylint: disable=no-self-use
'''
Unpublishes an active (usable) or removable publication
:param servicePoolPub: Publication to unpublish
'''
if State.isUsable(servicePoolPub.state) is False and State.isRemovable(servicePoolPub.state) is False:
raise PublishException(_('Can\'t unpublish non usable publication')
)
if servicePoolPub.userServices.exclude(state__in=State.INFO_STATES).count() > 0:
raise PublishException(_('Can\'t unpublish publications with services in process'))
try:
pubInstance = servicePoolPub.getInstance()
state = pubInstance.destroy()
servicePoolPub.setState(State.REMOVING)
PublicationFinishChecker.checkAndUpdateState(servicePoolPub, pubInstance, state)
except Exception, e:
raise PublishException(str(e))
def unpublish(self, servicePoolPub): # pylint: disable=no-self-use
'''
Unpublishes an active (usable) or removable publication
:param servicePoolPub: Publication to unpublish
'''
if State.isUsable(servicePoolPub.state) is False and State.isRemovable(servicePoolPub.state) is False:
raise PublishException(_('Can\'t unpublish non usable publication')
)
if servicePoolPub.userServices.exclude(state__in=State.INFO_STATES).count() > 0:
raise PublishException(_('Can\'t unpublish publications with services in process'))
try:
pubInstance = servicePoolPub.getInstance()
state = pubInstance.destroy()
servicePoolPub.setState(State.REMOVING)
PublicationFinishChecker.checkAndUpdateState(servicePoolPub, pubInstance, state)
except Exception as e:
raise PublishException(str(e))
def isUsable(self):
"""
Returns if this service is usable
"""
return State.isUsable(self.state)
def isUsable(self):
'''
Returns if this service is usable
'''
return State.isUsable(self.state)
def isUsable(self):
'''
Returns if this service is usable
'''
return State.isUsable(self.state)
def isUsable(self):
"""
Returns if this service is usable
"""
return State.isUsable(self.state)
