116 lines
3.9 KiB
Python
116 lines
3.9 KiB
Python
# Copyright 2013, 2014 IBM Corp.
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"""PowerVC Driver related Utilities"""
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from powervc.nova.driver.compute import constants
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from powervc.common.gettextutils import _
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import logging
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LOG = logging.getLogger(__name__)
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def normalize_host(hostname):
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"""The RPC 'topic.host' format only supports a single '.'"""
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if not hostname:
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return hostname
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return hostname.replace('.', '_')
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def get_pvc_id_from_metadata(metadata):
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"""
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This method helps to get pvc_id from a list or dict type
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metadata. This util method handles the following situation
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of metadata:
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Type of list sample 1:
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metadata = [
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{'key': 'powervm:defer_placement', 'value': 'true'},
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{'key': 'pvc_id', 'value': '40e2d7c9-b510-4e10-8986-057800117714'}
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]
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Type of list sample 2:
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metadata = [{
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"powervm:health_status.health_value": "OK",
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"pvc_id": "40e2d7c9-b510-4e10-8986-057800117714"
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}]
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Type of dict sample:
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metadata = {
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"powervm:health_status.health_value": "OK",
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"pvc_id": "40e2d7c9-b510-4e10-8986-057800117714",
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"powervm:defer_placement": "Fale",
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"powervm:max_cpus": "1"
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}
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If none of above types match and pvc_id found, return None
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"""
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if not metadata:
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return None
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pvc_id = None
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if (isinstance(metadata, list)):
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# Try to get pvc_id from list type 1
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for meta_list in metadata:
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if meta_list.get('key') == constants.PVC_ID:
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pvc_id = meta_list.get('value')
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LOG.info(_('Found the pvc_id from the list type 1 metadata:%s')
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% pvc_id)
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return pvc_id
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# If pvc_id not found in list type 1, try list type 2
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for meta_dict in metadata:
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if constants.PVC_ID in meta_dict.keys():
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pvc_id = meta_dict.get(constants.PVC_ID)
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LOG.info(_('Found the pvc_id from the list type 2 metadata:%s')
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% pvc_id)
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return pvc_id
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# If still not found pvc_id in list, return None
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LOG.info(_('Not found the pvc_id from the list type metadata.'))
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return None
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if (isinstance(metadata, dict)):
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# Try to get pvc_id from dict type
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if constants.PVC_ID in metadata.keys():
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pvc_id = metadata.get(constants.PVC_ID)
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LOG.info(_('Find the pvc_id from the dict type metadata: %s')
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% pvc_id)
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return pvc_id
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else:
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LOG.info(_('Not found the pvc_id from the dict type metadata.'))
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return None
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def fill_metadata_dict_by_pvc_instance(metadata, pvc_instance):
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"""
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This common method help to get PowerVC unique property into metadata
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"""
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if pvc_instance is None or not isinstance(pvc_instance, dict):
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LOG.warning('pvc instance is not a dict: %s' % pvc_instance)
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return {}
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if metadata is None:
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metadata = {}
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LOG.debug(_('metadata before filled: %s') % metadata)
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health_value = None
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health_status = pvc_instance.get('health_status')
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if health_status is not None:
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health_value = health_status.get('health_value')
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metadata[constants.PVC_ID] = pvc_instance['id']
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# The value 'None' of the dict type instance metadata is reserved
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# by the Nova framework.
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# Can not set the value of the instance metadata when it's 'None'.
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if health_value is not None:
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metadata[constants.gen_pvc_key('health_status.health_value')] \
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= health_value
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pvc_attrs = ['cpus', 'min_cpus', 'max_cpus', 'cpu_utilization',
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'min_vcpus', 'max_vcpus',
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'min_memory_mb', 'max_memory_mb', 'root_gb']
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for attr in pvc_attrs:
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val = pvc_instance.get(attr)
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if val is not None:
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metadata[constants.gen_pvc_key(attr)] = val
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LOG.debug(_('metadata after filled: %s') % metadata)
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return metadata
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