107 lines
4.0 KiB
Python
107 lines
4.0 KiB
Python
# Copyright 2014 Hewlett-Packard Development Company, L.P.
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# Copyright 2014 Red Hat, Inc.
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# All Rights Reserved.
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#
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# 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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#
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"""
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Helper classes for Ironic HTTP PATCH creation.
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"""
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from oslo_serialization import jsonutils
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import six
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import nova.conf
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CONF = nova.conf.CONF
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def create(node):
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"""Create an instance of the appropriate DriverFields class.
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:param node: a node object returned from ironicclient
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:returns: A GenericDriverFields instance.
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"""
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return GenericDriverFields(node)
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class GenericDriverFields(object):
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def __init__(self, node):
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self.node = node
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def get_deploy_patch(self, instance, image_meta, flavor,
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preserve_ephemeral=None):
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"""Build a patch to add the required fields to deploy a node.
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:param instance: the instance object.
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:param image_meta: the nova.objects.ImageMeta object instance
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:param flavor: the flavor object.
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:param preserve_ephemeral: preserve_ephemeral status (bool) to be
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specified during rebuild.
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:returns: a json-patch with the fields that needs to be updated.
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"""
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patch = []
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patch.append({'path': '/instance_info/image_source', 'op': 'add',
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'value': image_meta.id})
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patch.append({'path': '/instance_info/root_gb', 'op': 'add',
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'value': str(instance.flavor.root_gb)})
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patch.append({'path': '/instance_info/swap_mb', 'op': 'add',
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'value': str(flavor['swap'])})
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patch.append({'path': '/instance_info/display_name',
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'op': 'add', 'value': instance.display_name})
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patch.append({'path': '/instance_info/vcpus', 'op': 'add',
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'value': str(instance.flavor.vcpus)})
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patch.append({'path': '/instance_info/memory_mb', 'op': 'add',
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'value': str(instance.flavor.memory_mb)})
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patch.append({'path': '/instance_info/local_gb', 'op': 'add',
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'value': str(self.node.properties.get('local_gb', 0))})
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if instance.flavor.ephemeral_gb:
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patch.append({'path': '/instance_info/ephemeral_gb',
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'op': 'add',
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'value': str(instance.flavor.ephemeral_gb)})
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if CONF.default_ephemeral_format:
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patch.append({'path': '/instance_info/ephemeral_format',
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'op': 'add',
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'value': CONF.default_ephemeral_format})
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if preserve_ephemeral is not None:
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patch.append({'path': '/instance_info/preserve_ephemeral',
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'op': 'add', 'value': str(preserve_ephemeral)})
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capabilities = {}
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# read the flavor and get the extra_specs value.
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extra_specs = flavor.get('extra_specs')
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# scan through the extra_specs values and ignore the keys
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# not starting with keyword 'capabilities'.
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for key, val in six.iteritems(extra_specs):
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if not key.startswith('capabilities:'):
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continue
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# split the extra_spec key to remove the keyword
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# 'capabilities' and get the actual key.
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capabilities_string, capabilities_key = key.split(':', 1)
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if capabilities_key:
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capabilities[capabilities_key] = val
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if capabilities:
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patch.append({'path': '/instance_info/capabilities',
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'op': 'add', 'value': jsonutils.dumps(capabilities)})
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return patch
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