matthew/netbox-docker
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Merge core functionality into configuration.py

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Which is the file `docker/configuration.docker.py` in our repo.
The common code is then imported by `docker/ldap_config.docker.py`.
This commit is contained in:
Christian Mäder 2020-10-26 14:43:11 +01:00
parent 2dba2b8811
commit 58050e5287
2 changed files with 70 additions and 98 deletions
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76
docker/configuration.docker.py
View File

@ -1,45 +1,39 @@
## Generic Parts
# These functions are providing the functionality to load
# arbitrary configuration files.
#
# They can be imported by other code (see `ldap_config.py` for an example).
from os.path import abspath, isfile
from os import scandir
import importlib.util
import sys
_CONFIG_DIR = '/etc/netbox/config/'
_MAIN_CONFIG = 'configuration'
_MODULE = 'netbox.configuration'
_loaded_configurations = []
def __getattr__(name):
for config in _loaded_configurations:
try:
return getattr(config, name)
except:
pass
raise AttributeError
def _filename(f):
return f.name
def _import(module_name, path):
def _import(module_name, path, loaded_configurations):
spec = importlib.util.spec_from_file_location('', path)
module = importlib.util.module_from_spec(spec)
spec.loader.exec_module(module)
sys.modules[module_name] = module
_loaded_configurations.insert(0, module)
loaded_configurations.insert(0, module)
print(f"🧬 loaded config '{path}'")
_main_config_path = abspath(f'{_CONFIG_DIR}/{_MAIN_CONFIG}.py')
if isfile(_main_config_path):
_import(f'{_MODULE}.{_MAIN_CONFIG}', _main_config_path)
else:
print(f"⚠️ Main configuration '{_main_config_path}' not found.")
def read_configurations(config_module, config_dir, main_config):
loaded_configurations = []
with scandir(_CONFIG_DIR) as it:
main_config_path = abspath(f'{config_dir}/{main_config}.py')
if isfile(main_config_path):
_import(f'{config_module}.{main_config}', main_config_path, loaded_configurations)
else:
print(f"⚠️ Main configuration '{main_config_path}' not found.")
with scandir(config_dir) as it:
for f in sorted(it, key=_filename):
if not f.is_file():
continue
@ -50,12 +44,36 @@ with scandir(_CONFIG_DIR) as it:
if not f.name.endswith('.py'):
continue
if f.name == f'{_MAIN_CONFIG}.py':
if f.name == f'{config_dir}.py':
continue
module_name = f"{_MODULE}.{f.name[:-len('.py')]}".replace(".", "_")
_import(module_name, f.path)
module_name = f"{config_module}.{f.name[:-len('.py')]}".replace(".", "_")
_import(module_name, f.path, loaded_configurations)
if len(_loaded_configurations) == 0:
print(f"‼️ No configuration files found in '{_CONFIG_DIR}'.")
raise ImportError(f"No configuration files found in '{_CONFIG_DIR}'.")
if len(loaded_configurations) == 0:
print(f"‼️ No configuration files found in '{config_dir}'.")
raise ImportError(f"No configuration files found in '{config_dir}'.")
return loaded_configurations
## Specific Parts
# This section's code actually loads the various configuration files
# into the module with the given name.
# It contains the logic to resolve arbitrary configuration options by
# levaraging dynamic programming using `__getattr__`.
_loaded_configurations = read_configurations(
config_dir = '/etc/netbox/config/',
config_module = 'netbox.configuration',
main_config = 'configuration')
def __getattr__(name):
for config in _loaded_configurations:
try:
return getattr(config, name)
except:
pass
raise AttributeError

56
docker/ldap_config.docker.py
View File

@ -1,12 +1,9 @@
from os.path import abspath, isfile
from os import scandir
import importlib.util
import sys
from .configuration import read_configurations
_CONFIG_DIR = '/etc/netbox/config/ldap/'
_MAIN_CONFIG = 'ldap_config'
_MODULE = 'netbox.configuration.ldap'
_loaded_configurations = []
_loaded_configurations = read_configurations(
config_dir = '/etc/netbox/config/ldap/',
config_module = 'netbox.configuration.ldap',
main_config = 'ldap_config')
def __getattr__(name):
@ -16,46 +13,3 @@ def __getattr__(name):
except:
pass
raise AttributeError
def _filename(f):
return f.name
def _import(module_name, path):
spec = importlib.util.spec_from_file_location('', path)
module = importlib.util.module_from_spec(spec)
spec.loader.exec_module(module)
sys.modules[module_name] = module
_loaded_configurations.insert(0, module)
print(f"🧬 loaded config '{path}'")
_main_config_path = abspath(f'{_CONFIG_DIR}/{_MAIN_CONFIG}.py')
if isfile(_main_config_path):
_import(f'{_MODULE}.{_MAIN_CONFIG}', _main_config_path)
else:
print(f"⚠️ Main configuration '{_main_config_path}' not found.")
with scandir(_CONFIG_DIR) as it:
for f in sorted(it, key=_filename):
if not f.is_file():
continue
if f.name.startswith('__'):
continue
if not f.name.endswith('.py'):
continue
if f.name == f'{_MAIN_CONFIG}.py':
continue
module_name = f"{_MODULE}.{f.name[:-len('.py')]}".replace(".", "_")
_import(module_name, f.path)
if len(_loaded_configurations) == 0:
print(f"‼️ No configuration files found in '{_CONFIG_DIR}'.")
raise ImportError(f"No configuration files found in '{_CONFIG_DIR}'.")