89 lines
3.3 KiB
Python
89 lines
3.3 KiB
Python
# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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from oslo_log.log import logging
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from zun.common import utils
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from zun.pci import stats as pci_stats
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LOG = logging.getLogger(__name__)
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class HostState(object):
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"""Mutable and immutable information tracked for a host.
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This is an attempt to remove the ad-hoc data structures.
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"""
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def __init__(self, host):
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self.hostname = host
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# Mutable available resources.
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# These will change as resources are virtually "consumed".
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self.mem_available = 0
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self.mem_total = 0
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self.mem_free = 0
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self.mem_used = 0
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self.cpus = 0
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self.cpu_used = 0
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self.disk_total = 0
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self.disk_used = 0
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self.numa_topology = None
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self.labels = None
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self.pci_stats = None
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self.disk_quota_supported = False
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self.runtimes = []
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self.enable_cpu_pinning = False
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# Resource oversubscription values for the compute host:
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self.limits = {}
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def update(self, compute_node=None, service=None):
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"""Update information about a host"""
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@utils.synchronized((self.hostname, compute_node))
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def _locked_update(self, compute_node, service):
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if compute_node is not None:
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LOG.debug('Update host state from compute node: %s',
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compute_node)
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self._update_from_compute_node(compute_node)
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if service is not None:
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LOG.debug('Update host state with service: %s', service)
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self.service = service
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return _locked_update(self, compute_node, service)
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def _update_from_compute_node(self, compute_node):
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"""Update information about a host from a Compute object"""
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self.mem_available = compute_node.mem_available
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self.mem_total = compute_node.mem_total
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self.mem_free = compute_node.mem_free
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self.mem_used = compute_node.mem_used
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self.cpus = compute_node.cpus
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self.cpu_used = compute_node.cpu_used
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self.disk_total = compute_node.disk_total
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self.disk_used = compute_node.disk_used
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self.numa_topology = compute_node.numa_topology
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self.labels = compute_node.labels
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self.pci_stats = pci_stats.PciDeviceStats(
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stats=compute_node.pci_device_pools)
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self.disk_quota_supported = compute_node.disk_quota_supported
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self.runtimes = compute_node.runtimes
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self.enable_cpu_pinning = compute_node.enable_cpu_pinning
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def __repr__(self):
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return ("%(host)s ram: %(free_ram)sMB "
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"disk: %(free_disk)sGB cpus: %(free_cpu)s" %
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{'host': self.hostname,
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'free_ram': self.mem_free,
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'free_disk': self.disk_total - self.disk_used,
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'free_cpu': self.cpus - self.cpu_used})
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