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"""Configuration file handling""" |
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from __future__ import annotations |
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5
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import configparser |
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import os.path |
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7
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from glob import glob |
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9
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try: |
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import tomllib |
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except ImportError: |
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import tomli as tomllib |
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import annif |
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import annif.util |
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from annif.exception import ConfigurationException |
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logger = annif.logger |
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class AnnifConfigCFG: |
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"""Class for reading configuration in CFG/INI format""" |
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def __init__(self, filename: str = None, projstr: str = None) -> None: |
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self._config = configparser.ConfigParser() |
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self._config.optionxform = annif.util.identity |
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if filename is not None: |
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logger.debug(f"Reading configuration file {filename} in CFG format") |
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read_method = self._config.read |
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source = filename |
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elif projstr is not None: |
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logger.debug("Reading configuration from a string in CFG format") |
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read_method = self._config.read_string |
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source = projstr |
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self._read_config(read_method, source) |
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def _read_config(self, read_method, source): |
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encoding = "utf-8-sig" |
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try: |
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read_method(source, encoding) |
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except ( |
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configparser.DuplicateOptionError, |
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configparser.DuplicateSectionError, |
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) as err: |
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raise ConfigurationException(err.message) |
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@property |
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def project_ids(self) -> list[str]: |
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return self._config.sections() |
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def __getitem__(self, key: str) -> configparser.SectionProxy: |
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return self._config[key] |
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54
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55
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class AnnifConfigTOML: |
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"""Class for reading configuration in TOML format""" |
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def __init__(self, filename: str) -> None: |
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with open(filename, "rb") as projf: |
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try: |
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logger.debug(f"Reading configuration file {filename} in TOML format") |
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self._config = tomllib.load(projf) |
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except tomllib.TOMLDecodeError as err: |
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raise ConfigurationException( |
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f"Parsing TOML file '{filename}' failed: {err}" |
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) |
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68
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@property |
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def project_ids(self): |
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return self._config.keys() |
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def __getitem__(self, key: str) -> dict[str, str]: |
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return self._config[key] |
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75
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class AnnifConfigDirectory: |
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"""Class for reading configuration from directory""" |
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def __init__(self, directory: str) -> None: |
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files = glob(os.path.join(directory, "*.cfg")) |
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files.extend(glob(os.path.join(directory, "*.toml"))) |
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logger.debug(f"Reading configuration files in directory {directory}") |
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84
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self._config = dict() |
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for file in sorted(files): |
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source_config = parse_config(file) |
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for proj_id in source_config.project_ids: |
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self._check_duplicate_project_ids(proj_id, file) |
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self._config[proj_id] = source_config[proj_id] |
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91
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def _check_duplicate_project_ids(self, proj_id: str, file: str) -> None: |
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if proj_id in self._config: |
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# Error message resembles configparser's DuplicateSection message |
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raise ConfigurationException( |
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f'While reading from "{file}": project ID "{proj_id}" already ' |
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"exists in another configuration file in the directory." |
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) |
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@property |
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def project_ids(self): |
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return self._config.keys() |
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103
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def __getitem__(self, key: str) -> dict[str, str] | configparser.SectionProxy: |
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return self._config[key] |
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106
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107
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def check_config(projects_config_path: str) -> str | None: |
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if os.path.exists(projects_config_path): |
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return projects_config_path |
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else: |
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logger.warning( |
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"Project configuration file or directory " |
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+ f'"{projects_config_path}" is missing. Please provide one. ' |
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+ "You can set the path to the project configuration " |
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+ "using the ANNIF_PROJECTS environment " |
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+ 'variable or the command-line option "--projects".' |
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) |
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return None |
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120
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121
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def find_config() -> str | None: |
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for path in ("projects.cfg", "projects.toml", "projects.d"): |
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if os.path.exists(path): |
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return path |
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125
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126
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logger.warning( |
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"Could not find project configuration " |
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+ '"projects.cfg", "projects.toml" or "projects.d". ' |
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129
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+ "You can set the path to the project configuration " |
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+ "using the ANNIF_PROJECTS environment " |
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+ 'variable or the command-line option "--projects".' |
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) |
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return None |
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134
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135
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136
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def parse_config( |
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projects_config_path: str, |
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) -> AnnifConfigDirectory | AnnifConfigCFG | AnnifConfigTOML | None: |
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if projects_config_path: |
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projects_config_path = check_config(projects_config_path) |
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else: |
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projects_config_path = find_config() |
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144
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if not projects_config_path: # not found |
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return None |
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146
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147
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if os.path.isdir(projects_config_path): |
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return AnnifConfigDirectory(projects_config_path) |
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149
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elif projects_config_path.endswith(".toml"): # TOML format |
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return AnnifConfigTOML(projects_config_path) |
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151
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else: # classic CFG/INI style format |
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return AnnifConfigCFG(projects_config_path) |
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153
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NatLibFi /
Annif
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