423 lines
16 KiB
Python
423 lines
16 KiB
Python
# coding=utf-8
|
|
# vim: tabstop=4 shiftwidth=4 softtabstop=4
|
|
|
|
#
|
|
# Copyright (c) 2012, Intel Performance Learning Solutions Ltd.
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License"); you may
|
|
# not use this file except in compliance with the License. You may obtain
|
|
# a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
|
# License for the specific language governing permissions and limitations
|
|
# under the License.
|
|
|
|
"""
|
|
OCCI registry
|
|
"""
|
|
|
|
#R0201:method could be func.E1002:old style obj,R0914-R0912:# of branches
|
|
#E1121:# positional args.
|
|
#pylint: disable=R0201,E1002,R0914,R0912,E1121
|
|
|
|
import uuid
|
|
|
|
from occi import registry as occi_registry
|
|
from occi import core_model
|
|
from occi.extensions import infrastructure
|
|
|
|
from occi_os_api.backends import openstack
|
|
from occi_os_api.extensions import os_addon
|
|
|
|
from occi_os_api.nova_glue import vm
|
|
from occi_os_api.nova_glue import storage
|
|
from occi_os_api.nova_glue import net
|
|
|
|
from nova.flags import FLAGS
|
|
|
|
|
|
class OCCIRegistry(occi_registry.NonePersistentRegistry):
|
|
"""
|
|
Registry for OpenStack.
|
|
|
|
Idea is the following: Create the OCCI entities (Resource and their
|
|
links) here and let the backends handle actions, attributes etc.
|
|
"""
|
|
|
|
def __init__(self):
|
|
super(OCCIRegistry, self).__init__()
|
|
self.cache = {}
|
|
self.adm_net = core_model.Resource('/network/admin',
|
|
infrastructure.NETWORK,
|
|
[infrastructure.IPNETWORK])
|
|
self.pub_net = core_model.Resource('/network/public',
|
|
infrastructure.NETWORK,
|
|
[infrastructure.IPNETWORK])
|
|
|
|
self._setup_network()
|
|
|
|
def set_hostname(self, hostname):
|
|
if FLAGS.occi_custom_location_hostname:
|
|
hostname = FLAGS.occi_custom_location_hostname
|
|
super(OCCIRegistry, self).set_hostname(hostname)
|
|
|
|
def get_extras(self, extras):
|
|
"""
|
|
Get data which is encapsulated in the extras.
|
|
"""
|
|
sec_extras = None
|
|
if extras is not None:
|
|
sec_extras = {'user_id': extras['nova_ctx'].user_id,
|
|
'project_id': extras['nova_ctx'].project_id}
|
|
return sec_extras
|
|
|
|
# The following two are here to deal with the security group mixins
|
|
|
|
def delete_mixin(self, mixin, extras):
|
|
"""
|
|
Allows for the deletion of user defined mixins.
|
|
If the mixin is a security group mixin then that mixin's
|
|
backend is called.
|
|
"""
|
|
if (hasattr(mixin, 'related') and
|
|
os_addon.SEC_GROUP in mixin.related):
|
|
backend = self.get_backend(mixin, extras)
|
|
backend.destroy(mixin, extras)
|
|
|
|
super(OCCIRegistry, self).delete_mixin(mixin, extras)
|
|
|
|
def set_backend(self, category, backend, extras):
|
|
"""
|
|
Assigns user id and tenant id to user defined mixins
|
|
"""
|
|
if (hasattr(category, 'related') and
|
|
os_addon.SEC_GROUP in category.related):
|
|
backend = openstack.SecurityGroupBackend()
|
|
backend.init_sec_group(category, extras)
|
|
|
|
super(OCCIRegistry, self).set_backend(category, backend, extras)
|
|
|
|
# The following two deal with the creation and deletion os links.
|
|
|
|
def add_resource(self, key, resource, extras):
|
|
"""
|
|
Just here to prevent the super class from filling up an unused dict.
|
|
"""
|
|
if (key, extras['nova_ctx'].user_id) not in self.cache and \
|
|
core_model.Link.kind in resource.kind.related:
|
|
# don't need to cache twice, only adding links :-)
|
|
self.cache[(key, extras['nova_ctx'].user_id)] = resource
|
|
elif (key, extras['nova_ctx'].user_id) not in self.cache and \
|
|
resource.kind == os_addon.SEC_RULE:
|
|
# don't need to cache twice, only adding links :-)
|
|
self.cache[(key, extras['nova_ctx'].user_id)] = resource
|
|
|
|
def delete_resource(self, key, extras):
|
|
"""
|
|
Just here to prevent the super class from messing up.
|
|
"""
|
|
if (key, extras['nova_ctx'].user_id) in self.cache:
|
|
self.cache.pop((key, extras['nova_ctx'].user_id))
|
|
|
|
# the following routines actually retrieve the info form OpenStack. Note
|
|
# that a cache is used. The cache is stable - so delete resources
|
|
# eventually also get deleted form the cache.
|
|
|
|
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_keys(self, extras):
|
|
"""
|
|
Retrieve the keys of all resources.
|
|
"""
|
|
keys = []
|
|
for item in self.cache.values():
|
|
if item.extras is not None and item.extras != extras:
|
|
# filter out items not belonging to this user!
|
|
continue
|
|
else:
|
|
# add identifier
|
|
keys.append(item.identifier)
|
|
|
|
return keys
|
|
|
|
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
|
|
|
|
# Not part of parent
|
|
|
|
def _update_occi_compute(self, entity, extras):
|
|
"""
|
|
Update an occi compute resource instance.
|
|
"""
|
|
# TODO: implement update of mixins and links (remove old mixins and
|
|
# links)!
|
|
return entity
|
|
|
|
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 = instance['instance_type'].flavorid
|
|
res_tmp = self.get_category('/' + flavor_id + '/', extras)
|
|
if res_tmp:
|
|
entity.mixins.append(res_tmp)
|
|
|
|
os_id = instance['image_ref']
|
|
image_id = storage.get_image(os_id, context)['id']
|
|
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)
|
|
|
|
# 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 _update_occi_storage(self, entity, extras):
|
|
"""
|
|
Update a storage resource instance.
|
|
"""
|
|
return entity
|
|
|
|
def _construct_occi_storage(self, identifier, extras):
|
|
"""
|
|
Construct a OCCI storage instance.
|
|
|
|
First item in result list is entity self!
|
|
|
|
Adds it to the cache too!
|
|
"""
|
|
result = []
|
|
context = extras['nova_ctx']
|
|
stor = storage.get_storage(identifier, context)
|
|
|
|
# id, display_name, size, status
|
|
iden = infrastructure.STORAGE.location + identifier
|
|
entity = core_model.Resource(iden, infrastructure.STORAGE, [])
|
|
result.append(entity)
|
|
|
|
# create links on VM resources
|
|
if stor['status'] == 'in-use':
|
|
source = self.get_resource(infrastructure.COMPUTE.location +
|
|
str(stor['instance_uuid']), extras)
|
|
link = core_model.Link(infrastructure.STORAGELINK.location +
|
|
str(uuid.uuid4()),
|
|
infrastructure.STORAGELINK, [], source,
|
|
entity)
|
|
link.extras = self.get_extras(extras)
|
|
source.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 _setup_network(self):
|
|
"""
|
|
Add a public and an admin network interface.
|
|
"""
|
|
# TODO: read from openstack!
|
|
self.pub_net.attributes = {'occi.network.vlan': 'external',
|
|
'occi.network.label': 'default',
|
|
'occi.network.state': 'active',
|
|
'occi.networkinterface.address': '192'
|
|
'.168'
|
|
'.0.0/24',
|
|
'occi.networkinterface.gateway': '192.168'
|
|
'.0.1',
|
|
'occi.networkinterface.allocation':
|
|
'static'}
|
|
self.adm_net.attributes = {'occi.network.vlan': 'admin',
|
|
'occi.network.label': 'default',
|
|
'occi.network.state': 'active',
|
|
'occi.networkinterface.address': '10.0.0'
|
|
'.0/24',
|
|
'occi.networkinterface.gateway': '10.0.0'
|
|
'.1',
|
|
'occi.networkinterface.allocation':
|
|
'static'}
|
|
self.cache[(self.adm_net.identifier, None)] = self.adm_net
|
|
self.cache[(self.pub_net.identifier, None)] = self.pub_net
|
|
|
|
def _construct_network_link(self, net_desc, source, target, extras):
|
|
"""
|
|
Construct a network link and add to cache!
|
|
"""
|
|
link = core_model.Link(infrastructure.NETWORKINTERFACE.location +
|
|
str(uuid.uuid4()),
|
|
infrastructure.NETWORKINTERFACE,
|
|
[infrastructure.IPNETWORKINTERFACE], source,
|
|
target)
|
|
link.attributes = {
|
|
'occi.networkinterface.interface': net_desc['interface'],
|
|
'occi.networkinterface.mac': net_desc['mac'],
|
|
'occi.networkinterface.state': net_desc['state'],
|
|
'occi.networkinterface.address': net_desc['address'],
|
|
'occi.networkinterface.gateway': net_desc['gateway'],
|
|
'occi.networkinterface.allocation': net_desc['allocation']
|
|
}
|
|
link.extras = self.get_extras(extras)
|
|
source.links.append(link)
|
|
self.cache[(link.identifier, extras['nova_ctx'].user_id)] = link
|
|
return link
|