def index(self, req):
"""Return a list of existing file shares."""
filesystems = self.fs_driver.list_fs()
# Only return filesystems in the db.
context = req.environ['nova.context']
if self.has_db_support:
db_list = sharedfs_db.filesystem_list(context)
fs_list = []
for fs in filesystems:
name = fs.get('name')
if name in db_list:
db_entry = sharedfs_db.filesystem_get(context, name)
fs_list.append({'name': fs.get('name'),
'size': fs.get('size'),
'scope': db_entry.get('scope'),
'project': db_entry.get('project_id')})
db_list.remove(name)
else:
LOG.warn(_("Found filesystem %s that is not recored "
"in the database. Ignoring.") % name)
if db_list:
LOG.warn(_("Possible database integrity issue. The following "
"filesystems are recorded in the database but cannot "
"be located: %s") % db_list)
else:
fs_list = [{'name': fs.get('name'), 'size': fs.get('size'),
'scope': 'unknown', 'project': 'unknown'}
for fs in filesystems]
return _translate_fs_entries_view(fs_list)
def notify(self, message):
event_type = message.get('event_type')
if event_type not in ['compute.instance.delete.start',
'compute.instance.create.end']:
return
payload = message['payload']
instance = payload['instance_id']
tenant = payload['tenant_id']
user = payload['user_id']
ctxt = context.RequestContext(user, tenant)
# Find all global scope filesystems
# and all project-scope systems that are
# associated with this project.
fs_list = []
db_fs_list = sharedfs_db.filesystem_list(ctxt)
for fs_name in db_fs_list:
fs = sharedfs_db.filesystem_get(ctxt, fs_name)
if not fs:
LOG.debug(_("Database inconsistency: no record for FS %s") %
fs_name)
continue
if fs.scope == 'global':
fs_list.append(fs_name)
elif fs.scope == 'project' and fs.project_id == tenant:
fs_list.append(fs_name)
for fs_name in fs_list:
if event_type == 'compute.instance.delete.start':
self.unattach(ctxt, instance, fs_name)
elif event_type == 'compute.instance.create.end':
self.attach(ctxt, instance, fs_name)
