97 lines
3.4 KiB
Python
97 lines
3.4 KiB
Python
# Copyright 2017 AT&T Intellectual Property. All other rights reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Model for MaaS rack-controller API resource."""
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import drydock_provisioner.error as errors
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import drydock_provisioner.drivers.node.maasdriver.models.machine as maas_machine
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class RackController(maas_machine.Machine):
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"""Model for a rack controller singleton."""
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# These are the services that must be 'running'
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# to consider a rack controller healthy
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REQUIRED_SERVICES = ['http', 'tgt', 'dhcpd', 'rackd', 'tftp']
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resource_url = 'rackcontrollers/{resource_id}/'
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fields = [
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'resource_id',
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'hostname',
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'power_type',
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'power_state',
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'power_parameters',
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'interfaces',
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'boot_interface',
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'memory',
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'cpu_count',
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'tag_names',
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'status_name',
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'boot_mac',
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'owner_data',
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'service_set',
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]
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json_fields = ['hostname', 'power_type']
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def __init__(self, api_client, **kwargs):
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super().__init__(api_client, **kwargs)
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def get_services(self):
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"""Get status of required services on this rack controller."""
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self.refresh()
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svc_status = {svc: None for svc in RackController.REQUIRED_SERVICES}
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self.logger.debug("Checking service status on rack controller %s" %
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(self.resource_id))
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for s in getattr(self, 'service_set', []):
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svc = s.get('name')
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status = s.get('status')
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if svc in svc_status:
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self.logger.debug("Service %s on rack controller %s is %s" %
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(svc, self.resource_id, status))
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svc_status[svc] = status
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return svc_status
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def update_identity(self, n, domain="local"):
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"""Cannot update rack controller identity."""
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self.logger.debug("Cannot update rack controller identity for %s, no-op." %
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self.hostname)
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return
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def is_healthy(self):
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"""Check if this rack controller appears healthy based on service status."""
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rack_svc = self.get_services()
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healthy = True
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for s in rack_svc:
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if s in RackController.REQUIRED_SERVICES:
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# TODO(sh8121att) for dhcpd, ensure it is running if this rack controller
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# is a primary or secondary for a VLAN
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if rack_svc[s] not in ("running", "off"):
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healthy = False
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return healthy
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class RackControllers(maas_machine.Machines):
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"""Model for a collection of rack controllers."""
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collection_url = 'rackcontrollers/'
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collection_resource = RackController
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def __init__(self, api_client, **kwargs):
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super().__init__(api_client)
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def acquire_node(self, node_name):
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"""Acquire not valid for nodes that are Rack Controllers."""
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raise errors.DriverError("Rack controllers cannot be acquired.")
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