def container_update_claim(self, context, new_container, old_container,
limits=None):
"""Indicate resources are needed for an upcoming container update.
This should be called before the compute node is about to perform
an container update operation that will consume additional resources.
:param context: security context
:param new_container: container to be updated to.
:type new_container: zun.objects.container.Container object
:param old_container: container to be updated from.
:type old_container: zun.objects.container.Container object
:param limits: Dict of oversubscription limits for memory, disk,
and CPUs.
:returns: A Claim ticket representing the reserved resources. It can
be used to revert the resource usage if an error occurs
during the container update.
"""
if (new_container.cpu == old_container.cpu and
new_container.memory == old_container.memory):
return claims.NopClaim()
# We should have the compute node created here, just get it.
self.compute_node = self._get_compute_node(context)
claim = claims.UpdateClaim(context, new_container, old_container,
self, self.compute_node, limits=limits)
self._update_usage_from_container_update(context, new_container,
old_container)
# persist changes to the compute node:
self._update(self.compute_node)
return claim
def container_claim(self, context, container, hostname, limits=None):
"""Indicate resources are needed for an upcoming container build.
This should be called before the compute node is about to perform
an container build operation that will consume additional resources.
:param context: security context
:param container: container to reserve resources for.
:type container: zun.objects.container.Container object
:param hostname: The zun hostname selected by the scheduler
:param limits: Dict of oversubscription limits for memory, disk,
and CPUs.
:returns: A Claim ticket representing the reserved resources. It can
be used to revert the resource usage if an error occurs
during the container build.
"""
# No memory and cpu specified, no need to claim resource now.
if not (container.memory or container.cpu):
self._set_container_host(container)
return claims.NopClaim()
# We should have the compute node created here, just get it.
self.compute_node = self._get_compute_node(context)
if self.disabled(hostname):
self._set_container_host(container)
return claims.NopClaim()
claim = claims.Claim(context,
container,
self,
self.compute_node,
limits=limits)
self._set_container_host(container)
self._update_usage_from_container(container)
# persist changes to the compute node:
self._update(self.compute_node)
return claim
def container_claim(self, context, container, host, limits):
return claims.NopClaim()
def container_claim(self, context, container, pci_requests, limits):
return claims.NopClaim()
