uncloud/uncloud/api/helper.py

95 lines
2.8 KiB
Python
Executable File

import binascii
import logging
import requests
from pyotp import TOTP
from uncloud.common.shared import shared
from uncloud.common.settings import settings
logger = logging.getLogger(__name__)
def check_otp(name, realm, token):
try:
data = {
'auth_name': settings['otp']['auth_name'],
'auth_token': TOTP(settings['otp']['auth_seed']).now(),
'auth_realm': settings['otp']['auth_realm'],
'name': name,
'realm': realm,
'token': token,
}
except binascii.Error:
logger.error('Cannot compute OTP for seed: {}'.format(settings['otp']['auth_seed']))
return 400
else:
response = requests.post(settings['otp']['verification_controller_url'], json=data)
return response.status_code
def resolve_vm_name(name, owner):
"""Return UUID of Virtual Machine of name == name and owner == owner
Input: name of vm, owner of vm.
Output: uuid of vm if found otherwise None
"""
result = next(
filter(lambda vm: vm.value['owner'] == owner and vm.value['name'] == name, shared.vm_pool.vms),
None
)
if result:
return result.key.split('/')[-1]
return None
def resolve_image_name(name):
"""Return image uuid given its name and its store
* If the provided name is not in correct format
i.e {store_name}:{image_name} return ValueError
* If no such image found then return KeyError
"""
seperator = ':'
# Ensure, user/program passed valid name that is of type string
try:
store_name_and_image_name = name.split(seperator)
"""
Examples, where it would work and where it would raise exception
'images:alpine' --> ['images', 'alpine']
'images' --> ['images'] it would raise Exception as non enough value to unpack
'images:alpine:meow' --> ['images', 'alpine', 'meow'] it would raise Exception
as too many values to unpack
"""
store_name, image_name = store_name_and_image_name
except Exception:
raise ValueError('Image name not in correct format i.e {store_name}:{image_name}')
images = shared.etcd_client.get_prefix(settings['etcd']['image_prefix'], value_in_json=True)
# Try to find image with name == image_name and store_name == store_name
try:
image = next(
filter(
lambda im: im.value['name'] == image_name
and im.value['store_name'] == store_name,
images,
)
)
except StopIteration:
raise KeyError('No image with name {} found.'.format(name))
else:
image_uuid = image.key.split('/')[-1]
return image_uuid
def make_return_message(err, status_code=200):
return {'message': str(err)}, status_code