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config: allow reading teuthology config from env var location #1998

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config: allow reading teuthology config from env var location #1998

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29 changes: 22 additions & 7 deletions teuthology/config.py
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Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,12 @@
from collections import MutableMapping


# Configuration constants
_SYSTEM_CONFIG_PATH = '/etc/teuthology.yaml'
_USER_CONFIG_PATH = '~/.teuthology.yaml'
_ALT_PATH_ENV_VAR = 'TEUTHOLOGY_CONFIG'


def init_logging():
log = logging.getLogger(__name__)
return log
Expand Down Expand Up @@ -135,9 +141,9 @@ class TeuthologyConfig(YamlConfig):
"""
This class is intended to unify teuthology's many configuration files and
objects. Currently it serves as a convenient interface to
~/.teuthology.yaml and nothing else.
~/.teuthology.yaml or equivalent.
"""
yaml_path = os.path.join(os.path.expanduser('~/.teuthology.yaml'))
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I guess if drop this line you have to update the comment above about "interface to ~/.teuthology.yaml and nothing else".

yaml_path = _USER_CONFIG_PATH # yaml_path is updated in _get_config_path
_defaults = {
'archive_base': '/home/teuthworker/archive',
'archive_upload': None,
Expand Down Expand Up @@ -285,10 +291,19 @@ def set_config_attr(obj):


def _get_config_path():
system_config_path = '/etc/teuthology.yaml'
if not os.path.exists(TeuthologyConfig.yaml_path) and \
os.path.exists(system_config_path):
return system_config_path
return TeuthologyConfig.yaml_path
"""Look for a teuthology config yaml and return it's path.
Raises ValueError if no config yaml can be found.
"""
paths = [
os.path.join(os.path.expanduser(_USER_CONFIG_PATH)),
_SYSTEM_CONFIG_PATH,
]
if _ALT_PATH_ENV_VAR in os.environ:
paths.insert(0, os.path.expanduser(os.environ[_ALT_PATH_ENV_VAR]))
for path in paths:
if os.path.exists(path):
return path
raise ValueError(f"no teuthology config found, looked for: {paths}")


config = TeuthologyConfig(yaml_path=_get_config_path())
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