def isReady(self, userService: UserService) -> bool:
userService.refresh_from_db()
logger.debug('Checking ready of %s', userService)
if userService.state != State.USABLE or userService.os_state != State.USABLE:
logger.debug('State is not usable for %s', userService.name)
return False
logger.debug('Service %s is usable, checking it via setReady',
userService)
userServiceInstance = userService.getInstance()
try:
state = userServiceInstance.setReady()
except Exception as e:
logger.warn('Could not check readyness of %s: %s', userService, e)
return False
logger.debug('State: %s', state)
if state == State.FINISHED:
userService.updateData(userServiceInstance)
return True
userService.setState(State.PREPARING)
UserServiceOpChecker.makeUnique(userService, userServiceInstance,
state)
return False
def cancel(self, userService: UserService) -> UserService:
"""
Cancels an user service creation
@return: the Uservice canceling
"""
userService.refresh_from_db()
logger.debug('Canceling userService %s creation', userService)
if userService.isPreparing() is False:
logger.info(
'Cancel requested for a non running operation, performing removal instead'
)
return self.remove(userService)
userServiceInstance = userService.getInstance()
if not userServiceInstance.supportsCancel(
): # Does not supports cancel, but destroy, so mark it for "later" destroy
# State is kept, just mark it for destroy after finished preparing
userService.setProperty('destroy_after', 'y')
else:
userService.setState(State.CANCELING)
# We simply notify service that it should cancel operation
state = userServiceInstance.cancel()
# Data will be serialized on makeUnique process
# If cancel is not supported, base cancel always returns "FINISHED", and
# opchecker will set state to "removable"
UserServiceOpChecker.makeUnique(userService, userServiceInstance,
state)
return userService
def remove(self, userService: UserService) -> UserService:
"""
Removes a uService element
"""
with transaction.atomic():
userService = UserService.objects.select_for_update().get(
id=userService.id)
logger.debug('Removing userService %a', userService)
if userService.isUsable() is False and State.isRemovable(
userService.state) is False:
raise OperationException(
_('Can\'t remove a non active element'))
userService.setState(State.REMOVING)
logger.debug("***** The state now is %s *****",
State.toString(userService.state))
userService.setInUse(
False
) # For accounting, ensure that it is not in use right now
userService.save()
userServiceInstance = userService.getInstance()
state = userServiceInstance.destroy()
# Data will be serialized on makeUnique process
UserServiceOpChecker.makeUnique(userService, userServiceInstance,
state)
return userService
def checkAndUpdateState(userService: UserService,
userServiceInstance: UserDeployment, state: str):
"""
Checks the value returned from invocation to publish or checkPublishingState, updating the servicePoolPub database object
Return True if it has to continue checking, False if finished
"""
try:
# Fills up basic data
userService.unique_id = userServiceInstance.getUniqueId(
) # Updates uniqueId
userService.friendly_name = userServiceInstance.getName(
) # And name, both methods can modify serviceInstance, so we save it later
userService.save(update_fields=['unique_id', 'friendly_name'])
updater = {
State.PREPARING: UpdateFromPreparing,
State.REMOVING: UpdateFromRemoving,
State.CANCELING: UpdateFromCanceling
}.get(userService.state, UpdateFromOther)
logger.debug('Updating %s from %s with updater %s and state %s',
userService.friendly_name,
State.toString(userService.state), updater, state)
updater(userService, userServiceInstance).run(state)
except Exception as e:
logger.exception('Checking service state')
log.doLog(userService, log.ERROR, 'Exception: {}'.format(e),
log.INTERNAL)
userService.setState(State.ERROR)
userService.save(update_fields=['data'])
def notifyReadyFromOsManager(self, uService, data):
try:
ui = uService.getInstance()
logger.debug('Notifying user service ready state')
state = ui.notifyReadyFromOsManager(data)
logger.debug('State: {0}'.format(state))
uService.updateData(ui)
if state == State.FINISHED:
logger.debug('Service is now ready')
uService.save()
elif uService.state in (State.USABLE, State.PREPARING): # We don't want to get active deleting or deleted machines...
uService.setState(State.PREPARING)
UserServiceOpChecker.makeUnique(uService, ui, state)
except Exception as e:
logger.exception('Unhandled exception on notyfyReady: {}'.format(e))
UserService.setState(State.ERROR)
return
def notifyReadyFromOsManager(self, userService: UserService, data: typing.Any) -> None:
try:
userServiceInstance = userService.getInstance()
logger.debug('Notifying user service ready state')
state = userServiceInstance.notifyReadyFromOsManager(data)
logger.debug('State: %s', state)
if state == State.FINISHED:
userService.updateData(userServiceInstance)
logger.debug('Service is now ready')
elif userService.state in (State.USABLE, State.PREPARING): # We don't want to get active deleting or deleted machines...
userService.setState(State.PREPARING)
UserServiceOpChecker.makeUnique(userService, userServiceInstance, state)
userService.save(update_fields=['os_state'])
except Exception as e:
logger.exception('Unhandled exception on notyfyReady: %s', e)
userService.setState(State.ERROR)
return
def moveToLevel(self, cache: UserService, cacheLevel: int) -> None:
"""
Moves a cache element from one level to another
@return: cache element
"""
cache.refresh_from_db()
logger.debug('Moving cache %s to level %s', cache, cacheLevel)
cacheInstance = cache.getInstance()
state = cacheInstance.moveToCache(cacheLevel)
cache.cache_level = cacheLevel
cache.save(update_fields=['cache_level'])
logger.debug('Service State: %a %s %s', State.toString(state), State.toString(cache.state), State.toString(cache.os_state))
if State.isRuning(state) and cache.isUsable():
cache.setState(State.PREPARING)
# Data will be serialized on makeUnique process
UserServiceOpChecker.makeUnique(cache, cacheInstance, state)
def notifyReadyFromOsManager(self, uService, data):
try:
ui = uService.getInstance()
logger.debug('Notifying user service ready state')
state = ui.notifyReadyFromOsManager(data)
logger.debug('State: {0}'.format(state))
uService.updateData(ui)
if state == State.FINISHED:
logger.debug('Service is now ready')
uService.save()
elif uService.state in (
State.USABLE, State.PREPARING
): # We don't want to get active deleting or deleted machines...
uService.setState(State.PREPARING)
UserServiceOpChecker.makeUnique(uService, ui, state)
except Exception as e:
logger.exception(
'Unhandled exception on notyfyReady: {}'.format(e))
UserService.setState(State.ERROR)
return
