def get_resource(self, key, extras):
"""
Retrieve a single resource.
"""
context = extras['nova_ctx']
iden = key[key.rfind('/') + 1:]
vms = vm.get_vms(context)
vm_res_ids = [item['uuid'] for item in vms]
stors = storage.get_storage_volumes(context)
stor_res_ids = [item['id'] for item in stors]
if (key, context.user_id) in self.cache:
# I have seen it - need to update or delete if gone in OS!
# I have already seen it
cached_item = self.cache[(key, context.user_id)]
if not iden in vm_res_ids and cached_item.kind == \
infrastructure.COMPUTE:
# it was delete in OS -> remove links, cache + KeyError!
# can delete it because it was my item!
for link in cached_item.links:
self.cache.pop((link.identifier, repr(extras)))
self.cache.pop((key, repr(extras)))
raise KeyError
if not iden in stor_res_ids and cached_item.kind == \
infrastructure.STORAGE:
# it was delete in OS -> remove from cache + KeyError!
# can delete it because it was my item!
self.cache.pop((key, repr(extras)))
raise KeyError
elif iden in vm_res_ids:
# it also exists in OS -> update it (take links, mixins
# from cached one)
result = self._update_occi_compute(cached_item, extras)
elif iden in stor_res_ids:
# it also exists in OS -> update it!
result = self._update_occi_storage(cached_item, extras)
else:
# return cached item (links)
return cached_item
elif (key, None) in self.cache:
# return shared entities from cache!
return self.cache[(key, None)]
else:
# construct it.
if iden in vm_res_ids:
# create new & add to cache!
result = self._construct_occi_compute(iden, extras)[0]
elif iden in stor_res_ids:
result = self._construct_occi_storage(iden, extras)[0]
else:
# doesn't exist!
raise KeyError
if result.identifier != key:
raise AttributeError('Key/identifier mismatch! Requested: ' +
key + ' Got: ' + result.identifier)
return result
def get_resource(self, key, extras):
"""
Retrieve a single resource.
"""
context = extras['nova_ctx']
iden = key[key.rfind('/') + 1:]
vms = vm.get_vms(context)
vm_res_ids = [item['uuid'] for item in vms]
stors = storage.get_storage_volumes(context)
stor_res_ids = [item['id'] for item in stors]
if (key, context.user_id) in self.cache:
# I have seen it - need to update or delete if gone in OS!
# I have already seen it
cached_item = self.cache[(key, context.user_id)]
if not iden in vm_res_ids and cached_item.kind == \
infrastructure.COMPUTE:
# it was delete in OS -> remove links, cache + KeyError!
# can delete it because it was my item!
for link in cached_item.links:
self.cache.pop((link.identifier, repr(extras)))
self.cache.pop((key, repr(extras)))
raise KeyError
if not iden in stor_res_ids and cached_item.kind == \
infrastructure.STORAGE:
# it was delete in OS -> remove from cache + KeyError!
# can delete it because it was my item!
self.cache.pop((key, repr(extras)))
raise KeyError
elif iden in vm_res_ids:
# it also exists in OS -> update it (take links, mixins
# from cached one)
result = self._update_occi_compute(cached_item, extras)
elif iden in stor_res_ids:
# it also exists in OS -> update it!
result = self._update_occi_storage(cached_item, extras)
else:
# return cached item (links)
return cached_item
elif (key, None) in self.cache:
# return shared entities from cache!
return self.cache[(key, None)]
else:
# construct it.
if iden in vm_res_ids:
# create new & add to cache!
result = self._construct_occi_compute(iden, extras)[0]
elif iden in stor_res_ids:
result = self._construct_occi_storage(iden, extras)[0]
else:
# doesn't exist!
raise KeyError
if result.identifier != key:
raise AttributeError('Key/identifier mismatch! Requested: ' + key +
' Got: ' + result.identifier)
return result
def get_resources(self, extras):
"""
Retrieve a set of resources.
"""
# TODO: add security rules!
context = extras['nova_ctx']
result = []
# VMs
vms = vm.get_vms(context)
for instance in vms:
occi_compute = self._construct_occi_compute(instance, extras)
result.append(occi_compute)
result.extend(occi_compute.links)
# Volumes
stors = storage.get_storage_volumes(context)
for stor in stors:
occi_storage = self._construct_occi_storage(stor, extras)
result.append(occi_storage)
result.extend(occi_storage.links)
# Networks, XXX not sure if I need to return this
result.extend(self.nets.values())
return result
def get_resources(self, extras):
"""
Retrieve a set of resources.
"""
# TODO: add security rules!
context = extras['nova_ctx']
result = []
vms = vm.get_vms(context)
vm_res_ids = [item['uuid'] for item in vms]
stors = storage.get_storage_volumes(context)
stor_res_ids = [item['id'] for item in stors]
for item in self.cache.values():
if item.extras is not None and item.extras['user_id'] != \
context.user_id:
# filter out items not belonging to this user!
continue
item_id = item.identifier[item.identifier.rfind('/') + 1:]
if item.extras is None:
# add to result set
result.append(item)
elif item_id in vm_res_ids and item.kind == \
infrastructure.COMPUTE:
# check & update (take links, mixins from cache)
# add compute and it's links to result
self._update_occi_compute(item, extras)
result.append(item)
result.extend(item.links)
elif item_id in stor_res_ids and item.kind == \
infrastructure.STORAGE:
# check & update (take links, mixins from cache)
# add compute and it's links to result
self._update_occi_storage(item, extras)
result.append(item)
elif item_id not in vm_res_ids and item.kind == \
infrastructure.COMPUTE:
# remove item and it's links from cache!
for link in item.links:
self.cache.pop((link.identifier, item.extras['user_id']))
self.cache.pop((item.identifier, item.extras['user_id']))
elif item_id not in stor_res_ids and item.kind == \
infrastructure.STORAGE:
# remove item
self.cache.pop((item.identifier, item.extras['user_id']))
for item in vms:
if (infrastructure.COMPUTE.location + item['uuid'],
context.user_id) in self.cache:
continue
else:
# construct (with links and mixins and add to cache!
# add compute and it's linke to result
ent_list = self._construct_occi_compute(item['uuid'], extras)
result.extend(ent_list)
for item in stors:
if (infrastructure.STORAGE.location + item['id'],
context.user_id) in self.cache:
continue
else:
# construct (with links and mixins and add to cache!
# add compute and it's linke to result
ent_list = self._construct_occi_storage(item['id'], extras)
result.extend(ent_list)
return result
def _construct_occi_compute(self, identifier, extras):
"""
Construct a OCCI compute instance.
First item in result list is entity self!
Adds it to the cache too!
"""
result = []
context = extras['nova_ctx']
instance = vm.get_vm(identifier, context)
# 1. get identifier
iden = infrastructure.COMPUTE.location + identifier
entity = core_model.Resource(iden, infrastructure.COMPUTE,
[os_addon.OS_VM])
result.append(entity)
# 2. os and res templates
flavor_id = int(instance['instance_type_id'])
res_tmp = self.get_category('/' + str(flavor_id) + '/', extras)
if res_tmp:
entity.mixins.append(res_tmp)
image_id = instance['image_ref']
image_tmp = self.get_category('/' + image_id + '/', extras)
if image_tmp:
entity.mixins.append(image_tmp)
# 3. network links & get links from cache!
net_links = net.get_network_details(identifier, context)
for item in net_links['public']:
link = self._construct_network_link(item, entity, self.pub_net,
extras)
result.append(link)
for item in net_links['admin']:
link = self._construct_network_link(item, entity, self.adm_net,
extras)
result.append(link)
# 4. storage links from the storage (and cache them)
stors = storage.get_storage_volumes(context)
for item in stors:
if item['status'] == 'in-use' and item['instance_uuid'] \
== identifier:
stor = core_model.Resource(
infrastructure.STORAGE.location +
item['id'],
infrastructure.STORAGE,
[])
stor.attributes['occi.core.id'] = item['id']
link = core_model.Link(infrastructure.STORAGELINK.location +
str(uuid.uuid4()),
infrastructure.STORAGELINK, [], entity,
stor)
link.attributes = {
'occi.storagelink.deviceid': item['mountpoint'],
'occi.storagelink.mountpoint': item['mountpoint'],
'occi.storagelink.state': 'active'}
link.extras = self.get_extras(extras)
entity.links.append(link)
result.append(link)
self.cache[(link.identifier, context.user_id)] = link
# core.id and cache it!
entity.attributes['occi.core.id'] = identifier
entity.extras = self.get_extras(extras)
self.cache[(entity.identifier, context.user_id)] = entity
return result
def get_resources(self, extras):
"""
Retrieve a set of resources.
"""
# TODO: add security rules!
context = extras['nova_ctx']
result = []
vms = vm.get_vms(context)
vm_res_ids = [item['uuid'] for item in vms]
stors = storage.get_storage_volumes(context)
stor_res_ids = [item['id'] for item in stors]
for item in self.cache.values():
if item.extras is not None and item.extras['user_id'] != \
context.user_id:
# filter out items not belonging to this user!
continue
item_id = item.identifier[item.identifier.rfind('/') + 1:]
if item.extras is None:
# add to result set
result.append(item)
elif item_id in vm_res_ids and item.kind == \
infrastructure.COMPUTE:
# check & update (take links, mixins from cache)
# add compute and it's links to result
self._update_occi_compute(item, extras)
result.append(item)
result.extend(item.links)
elif item_id in stor_res_ids and item.kind == \
infrastructure.STORAGE:
# check & update (take links, mixins from cache)
# add compute and it's links to result
self._update_occi_storage(item, extras)
result.append(item)
elif item_id not in vm_res_ids and item.kind == \
infrastructure.COMPUTE:
# remove item and it's links from cache!
for link in item.links:
self.cache.pop((link.identifier, item.extras['user_id']))
self.cache.pop((item.identifier, item.extras['user_id']))
elif item_id not in stor_res_ids and item.kind == \
infrastructure.STORAGE:
# remove item
self.cache.pop((item.identifier, item.extras['user_id']))
for item in vms:
if (infrastructure.COMPUTE.location + item['uuid'],
context.user_id) in self.cache:
continue
else:
# construct (with links and mixins and add to cache!
# add compute and it's linke to result
ent_list = self._construct_occi_compute(item['uuid'], extras)
result.extend(ent_list)
for item in stors:
if (infrastructure.STORAGE.location + item['id'],
context.user_id) in self.cache:
continue
else:
# construct (with links and mixins and add to cache!
# add compute and it's linke to result
ent_list = self._construct_occi_storage(item['id'], extras)
result.extend(ent_list)
return result
