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[6.14.z] Add a mechanism to swap nailgun versions on demand #13100

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16 changes: 14 additions & 2 deletions robottelo/hosts.py
Original file line number Diff line number Diff line change
Expand Up @@ -1740,14 +1740,26 @@ def __init__(self, hostname=None, **kwargs):
self._api = type('api', (), {'_configured': False})
self._cli = type('cli', (), {'_configured': False})

def _swap_nailgun(self, new_version):
"""Install a different version of nailgun from GitHub and invalidate the module cache."""
import sys

from pip._internal import main as pip_main

pip_main(['uninstall', '-y', 'nailgun'])
pip_main(['install', f'https://github.com/SatelliteQE/nailgun/archive/{new_version}.zip'])
self._api = type('api', (), {'_configured': False})
to_clear = [k for k in sys.modules.keys() if 'nailgun' in k]
[sys.modules.pop(k) for k in to_clear]

@property
def api(self):
"""Import all nailgun entities and wrap them under self.api"""
if not self._api:
self._api = type('api', (), {'_configured': False})
if self._api._configured:
return self._api

from nailgun import entities as _entities # use a private import
from nailgun.config import ServerConfig
from nailgun.entity_mixins import Entity

Expand All @@ -1767,7 +1779,7 @@ class DecClass(cls):
verify=settings.server.verify_ca,
)
# add each nailgun entity to self.api, injecting our server config
for name, obj in entities.__dict__.items():
for name, obj in _entities.__dict__.items():
try:
if Entity in obj.mro():
# create a copy of the class and inject our server config into the __init__
Expand Down