def load(self):
"""Load mrack configuration, first config file wins, rest is ignored."""
cfg_paths = self.get_config_paths()
chosen = None
for cfg_path in cfg_paths:
if os.path.exists(cfg_path):
chosen = cfg_path
break
if not chosen:
logger.debug("No config file found.")
self._parser.read_dict({"mrack": {}}) # empty mrack section
return
try:
logger.debug(f"Loading config file: {chosen}.")
self._parser.read(chosen)
except ParsingError as parse_err:
raise ConfigError(f"Invalid syntax in configuration file {chosen}."
) from parse_err
if not self._parser.has_section(self.section):
raise ConfigError(f"Configuration file {chosen} doesn't have "
f"required section [{self.section}].")
return
def init_metadata(ctx, user_defined_path):
"""Load and initialize job metadata."""
config = ctx.obj[CONFIG]
meta_path = user_defined_path or config.metadata_path()
if not meta_path:
raise ConfigError("Job metadata file path not provided.")
if not os.path.exists(meta_path):
raise ConfigError(f"Job metadata file not found: {meta_path}")
metadata_data = load_yaml(meta_path)
ctx.obj[METADATA] = metadata_data
return metadata_data
def _locate_mrack_section(self):
"""Locate mrack managed section."""
start = -1
end = -1
mrack_lines = []
errors = []
for index, line in enumerate(self.lines):
if MRACK_START in line:
if start != -1:
errors.append("Multiple start marks.")
start = index
if MRACK_END in line:
if end != -1:
errors.append("Multiple end marks.")
end = index
if start != -1 and end == -1 and index > start:
mrack_lines.append([index, line])
# Check errors:
if start == -1 and end != -1:
errors.append("Doesn't have start mark.")
if start != -1 and end == -1:
errors.append("Doesn't have end mark.")
if end < start:
errors.append("End mark before start mark.")
if errors:
error = "/etc/hosts has broken mrack managed section and needs fixing:\n"
for err in errors:
error += f" {err}\n"
raise ConfigError(error)
return (start, end, mrack_lines)
def create_inventory(self):
"""Create the Ansible inventory in dict form."""
provisioned = self._db.hosts
inventory = deepcopy(
self._config.get("inventory_layout", DEFAULT_INVENTORY_LAYOUT))
if not isinstance(inventory, dict):
raise ConfigError("Inventory layout should be a dictionary")
all_group = ensure_all_group(inventory)
for host in provisioned.values():
meta_host, _meta_domain = get_host_from_metadata(
self._metadata, host.name)
# Groups can be defined in both "groups" and "group" variable.
groups = meta_host.get("groups", [])
group = meta_host.get("group")
if group and group not in groups:
groups.append(group)
# Add only a reference custom groups
for group in groups:
added = add_to_group(inventory, group, host.name)
if not added: # group doesn't exist
add_group(inventory, group, host.name)
# Main record belongs in "all" group
all_group["hosts"][host.name] = self.create_ansible_host(host.name)
return inventory
def config(self):
"""Get transformer/provider configuration from provisioning configuration."""
key = self._config_key
try:
return self._config[key]
except KeyError as key_err:
error = f"No '{key}' entry in provisioning configuration"
raise ConfigError(error) from key_err
def validate_dict_attrs(dct, attr_list, dct_name):
"""Validate that dictionary contains all attributes.
Based on provided attribute list.
"""
missing = [a for a in attr_list if a not in dct]
if missing:
error = f"""
'{dct_name} definition:'
{dct}
'Is missing required attributes: {missing}'
"""
raise ConfigError(error)
def wrapped_f(*args, **kwargs):
try:
return func(*args, **kwargs)
except FileNotFoundError as file_error:
raise ConfigError(self.error.format(
path=file_error.filename)) from file_error