| import os |
| import base64 |
| import traceback |
| from collections import defaultdict |
| from django.db.models import F, Q |
| from planetstack.config import Config |
| from util.logger import Logger, logging |
| from observer.openstacksyncstep import OpenStackSyncStep |
| from core.models import * |
| |
| logger = Logger(logfile='observer.log', level=logging.INFO) |
| |
| class GarbageCollector(OpenStackSyncStep): |
| requested_interval = 86400 |
| provides=[] |
| |
| def call(self, **args): |
| try: |
| #self.gc_roles() |
| self.gc_tenants() |
| self.gc_users() |
| self.gc_user_tenant_roles() |
| self.gc_slivers() |
| self.gc_sliver_ips() |
| self.gc_external_routes() |
| except: |
| traceback.print_exc() |
| |
| def gc_roles(self): |
| """ |
| all role that don't already exist in keystone. Remove keystone roles that |
| don't exist in planetstack |
| """ |
| # sync all roles that don't already in keystone |
| keystone_roles = self.driver.shell.keystone.roles.findall() |
| keystone_role_names = [kr.name for kr in keystone_roles] |
| pending_roles = Role.objects.all() |
| pending_role_names = [r.role_type for r in pending_roles] |
| # don't delete roles for now |
| """ |
| # delete keystone roles that don't exist in planetstack |
| for keystone_role in keystone_roles: |
| if keystone_role.name == 'admin': |
| continue |
| if keystone_role.name not in pending_role_names: |
| try: |
| self.driver.delete_role({id: keystone_role.id}) |
| except: |
| traceback.print_exc() |
| """ |
| |
| def gc_tenants(self): |
| """ |
| Remove sites and slices that no don't exist in openstack db if they |
| have an enacted time (enacted != None). |
| """ |
| # get all sites that where enacted != null. We can assume these sites |
| # have previously been synced and need to be checed for deletion. |
| sites = Site.objects.filter(enacted__isnull=False) |
| site_dict = {} |
| for site in sites: |
| site_dict[site.login_base] = site |
| |
| # get all slices that where enacted != null. We can assume these slices |
| # have previously been synced and need to be checed for deletion. |
| slices = Slice.objects.filter(enacted__isnull=False) |
| slice_dict = {} |
| for slice in slices: |
| slice_dict[slice.name] = slice |
| |
| # delete keystone tenants that don't have a site record |
| tenants = self.driver.shell.keystone.tenants.findall() |
| system_tenants = ['admin','service', 'invisible_to_admin'] |
| for tenant in tenants: |
| if tenant.name in system_tenants: |
| continue |
| if tenant.name not in site_dict and tenant.name not in slice_dict: |
| try: |
| self.driver.delete_tenant(tenant.id) |
| logger.info("deleted tenant: %s" % (tenant)) |
| except: |
| logger.log_exc("delete tenant failed: %s" % tenant) |
| |
| |
| def gc_users(self): |
| """ |
| Remove users that no don't exist in openstack db if they have an |
| enacted time (enacted != None). |
| """ |
| # get all users that where enacted != null. We can assume these users |
| # have previously been synced and need to be checed for deletion. |
| users = User.objects.filter(enacted__isnull=False) |
| user_dict = {} |
| for user in users: |
| user_dict[user.kuser_id] = user |
| |
| # delete keystone users that don't have a user record |
| system_users = ['admin', 'nova', 'quantum', 'glance', 'cinder', 'swift', 'service', 'demo'] |
| users = self.driver.shell.keystone.users.findall() |
| for user in users: |
| if user.name in system_users: |
| continue |
| if user.id not in user_dict: |
| try: |
| self.driver.delete_user(user.id) |
| logger.info("deleted user: %s" % user) |
| except: |
| logger.log_exc("delete user failed: %s" % user) |
| |
| |
| def gc_user_tenant_roles(self): |
| """ |
| Remove roles that don't exist in openstack db if they have |
| an enacted time (enacted != None). |
| """ |
| # get all site privileges and slice memberships that have been enacted |
| user_tenant_roles = defaultdict(list) |
| for site_priv in SitePrivilege.objects.filter(enacted__isnull=False): |
| user_tenant_roles[(site_priv.user.kuser_id, site_priv.site.tenant_id)].append(site_priv.role.role) |
| for slice_memb in SlicePrivilege.objects.filter(enacted__isnull=False): |
| user_tenant_roles[(slice_memb.user.kuser_id, slice_memb.slice.tenant_id)].append(slice_memb.role.role) |
| |
| # Some user tenant role aren't stored in planetstack but they must be preserved. |
| # Role that fall in this category are |
| # 1. Never remove a user's role that their home site |
| # 2. Never remove a user's role at a slice they've created. |
| # Keep track of all roles that must be preserved. |
| users = User.objects.all() |
| preserved_roles = {} |
| for user in users: |
| tenant_ids = [s['tenant_id'] for s in user.slices.values()] |
| if user.site: |
| tenant_ids.append(user.site.tenant_id) |
| preserved_roles[user.kuser_id] = tenant_ids |
| |
| |
| # begin removing user tenant roles from keystone. This is stored in the |
| # Metadata table. |
| for metadata in self.driver.shell.keystone_db.get_metadata(): |
| # skip admin roles |
| if metadata.user_id == self.driver.admin_user.id: |
| continue |
| # skip preserved tenant ids |
| if metadata.user_id in preserved_roles and \ |
| metadata.tenant_id in preserved_roles[metadata.user_id]: |
| continue |
| # get roles for user at this tenant |
| user_tenant_role_ids = user_tenant_roles.get((metadata.user_id, metadata.tenant_id), []) |
| |
| if user_tenant_role_ids: |
| # The user has roles at the tenant. Check if roles need to |
| # be updated. |
| user_keystone_role_ids = metadata.data.get('roles', []) |
| for role_id in user_keystone_role_ids: |
| if role_id not in user_tenant_role_ids: |
| user_keystone_role_ids.pop(user_keystone_role_ids.index(role_id)) |
| else: |
| # The user has no roles at this tenant. |
| metadata.data['roles'] = [] |
| #session.add(metadata) |
| logger.info("pruning metadata for %s at %s" % (metadata.user_id, metadata.tenant_id)) |
| |
| def gc_slivers(self): |
| """ |
| Remove slivers that no don't exist in openstack db if they have |
| an enacted time (enacted != None). |
| """ |
| # get all slivers where enacted != null. We can assume these users |
| # have previously been synced and need to be checed for deletion. |
| slivers = Sliver.objects.filter(enacted__isnull=False) |
| sliver_dict = {} |
| for sliver in slivers: |
| sliver_dict[sliver.instance_id] = sliver |
| |
| # delete sliver that don't have a sliver record |
| ctx = self.driver.shell.nova_db.ctx |
| instances = self.driver.shell.nova_db.instance_get_all(ctx) |
| for instance in instances: |
| if instance.uuid not in sliver_dict: |
| try: |
| # lookup tenant and update context |
| tenant = self.driver.shell.keystone.tenants.find(id=instance.project_id) |
| driver = self.driver.client_driver(tenant=tenant.name) |
| driver.destroy_instance(instance.uuid) |
| logger.info("destroyed sliver: %s" % (instance)) |
| except: |
| logger.log_exc("destroy sliver failed: %s" % instance) |
| |
| |
| def gc_sliver_ips(self): |
| """ |
| Update ips that have changed. |
| """ |
| # fill in null ip addresses |
| slivers = Sliver.objects.filter(ip=None) |
| for sliver in slivers: |
| # update connection |
| driver = self.driver.client_driver(tenant=sliver.slice.name) |
| servers = driver.shell.nova.servers.findall(id=sliver.instance_id) |
| if not servers: |
| continue |
| server = servers[0] |
| ips = server.addresses.get(sliver.slice.name, []) |
| if ips and sliver.ip != ips[0]['addr']: |
| sliver.ip = ips[0]['addr'] |
| sliver.save() |
| logger.info("updated sliver ip: %s %s" % (sliver, ips[0])) |
| |
| def gc_external_routes(self): |
| pass |
| |
| def gc_nodes(self): |
| # collect local nodes |
| nodes = Node.objects.all() |
| nodes_dict = {} |
| for node in nodes: |
| nodes_dict[node.name] = node |
| |
| # collect nova nodes: |
| compute_nodes = self.client.nova.hypervisors.list() |
| compute_nodes_dict = {} |
| for compute_node in compute_nodes: |
| compute_nodes_dict[compute_node.hypervisor_hostname] = compute_node |
| |
| # remove old nodes |
| old_node_names = set(nodes_dict.keys()).difference(compute_nodes_dict.keys()) |
| Node.objects.filter(name__in=old_node_names).delete() |
| |
| def gc_images(self): |
| pass |