Nominatim configuration accessor.
"""
from typing import Dict, Any, List, Mapping, Optional
+import importlib.util
import logging
import os
+import sys
from pathlib import Path
import json
import yaml
from dotenv import dotenv_values
+from psycopg2.extensions import parse_dsn
from nominatim.typing import StrPath
from nominatim.errors import UsageError
+import nominatim.paths
LOG = logging.getLogger()
CONFIG_CACHE : Dict[str, Any] = {}
class Configuration:
- """ Load and manage the project configuration.
-
- Nominatim uses dotenv to configure the software. Configuration options
- are resolved in the following order:
-
- * from the OS environment (or the dirctionary given in `environ`
- * from the .env file in the project directory of the installation
- * from the default installation in the configuration directory
+ """ This class wraps access to the configuration settings
+ for the Nominatim instance in use.
All Nominatim configuration options are prefixed with 'NOMINATIM_' to
- avoid conflicts with other environment variables.
+ avoid conflicts with other environment variables. All settings can
+ be accessed as properties of the class under the same name as the
+ setting but with the `NOMINATIM_` prefix removed. In addition, there
+ are accessor functions that convert the setting values to types
+ other than string.
"""
- def __init__(self, project_dir: Path, config_dir: Path,
+ def __init__(self, project_dir: Optional[Path],
environ: Optional[Mapping[str, str]] = None) -> None:
self.environ = environ or os.environ
self.project_dir = project_dir
- self.config_dir = config_dir
- self._config = dotenv_values(str((config_dir / 'env.defaults').resolve()))
- if project_dir is not None and (project_dir / '.env').is_file():
- self._config.update(dotenv_values(str((project_dir / '.env').resolve())))
+ self.config_dir = nominatim.paths.CONFIG_DIR
+ self._config = dotenv_values(str(self.config_dir / 'env.defaults'))
+ if self.project_dir is not None and (self.project_dir / '.env').is_file():
+ self.project_dir = self.project_dir.resolve()
+ self._config.update(dotenv_values(str(self.project_dir / '.env')))
class _LibDirs:
module: Path
osm2pgsql: Path
- php: Path
- sql: Path
- data: Path
+ php = nominatim.paths.PHPLIB_DIR
+ sql = nominatim.paths.SQLLIB_DIR
+ data = nominatim.paths.DATA_DIR
self.lib_dir = _LibDirs()
+ self._private_plugins: Dict[str, object] = {}
def set_libdirs(self, **kwargs: StrPath) -> None:
""" Set paths to library functions and data.
"""
for key, value in kwargs.items():
- setattr(self.lib_dir, key, Path(value).resolve())
+ setattr(self.lib_dir, key, Path(value))
def __getattr__(self, name: str) -> str:
def get_bool(self, name: str) -> bool:
""" Return the given configuration parameter as a boolean.
- Values of '1', 'yes' and 'true' are accepted as truthy values,
- everything else is interpreted as false.
+
+ Parameters:
+ name: Name of the configuration parameter with the NOMINATIM_
+ prefix removed.
+
+ Returns:
+ `True` for values of '1', 'yes' and 'true', `False` otherwise.
"""
return getattr(self, name).lower() in ('1', 'yes', 'true')
def get_int(self, name: str) -> int:
""" Return the given configuration parameter as an int.
+
+ Parameters:
+ name: Name of the configuration parameter with the NOMINATIM_
+ prefix removed.
+
+ Returns:
+ The configuration value converted to int.
+
+ Raises:
+ ValueError: when the value is not a number.
"""
try:
return int(getattr(self, name))
def get_str_list(self, name: str) -> Optional[List[str]]:
""" Return the given configuration parameter as a list of strings.
The values are assumed to be given as a comma-sparated list and
- will be stripped before returning them. On empty values None
- is returned.
+ will be stripped before returning them.
+
+ Parameters:
+ name: Name of the configuration parameter with the NOMINATIM_
+ prefix removed.
+
+ Returns:
+ (List[str]): The comma-split parameter as a list. The
+ elements are stripped of leading and final spaces before
+ being returned.
+ (None): The configuration parameter was unset or empty.
"""
raw = getattr(self, name)
def get_path(self, name: str) -> Optional[Path]:
""" Return the given configuration parameter as a Path.
- If a relative path is configured, then the function converts this
- into an absolute path with the project directory as root path.
- If the configuration is unset, None is returned.
+
+ Parameters:
+ name: Name of the configuration parameter with the NOMINATIM_
+ prefix removed.
+
+ Returns:
+ (Path): A Path object of the parameter value.
+ If a relative path is configured, then the function converts this
+ into an absolute path with the project directory as root path.
+ (None): The configuration parameter was unset or empty.
"""
value = getattr(self, name)
if not value:
cfgpath = Path(value)
if not cfgpath.is_absolute():
+ assert self.project_dir is not None
cfgpath = self.project_dir / cfgpath
return cfgpath.resolve()
return dsn
+ def get_database_params(self) -> Mapping[str, str]:
+ """ Get the configured parameters for the database connection
+ as a mapping.
+ """
+ dsn = self.DATABASE_DSN
+
+ if dsn.startswith('pgsql:'):
+ return dict((p.split('=', 1) for p in dsn[6:].split(';')))
+
+ return parse_dsn(dsn)
+
+
def get_import_style_file(self) -> Path:
""" Return the import style file as a path object. Translates the
name of the standard styles automatically into a file in the
style = getattr(self, 'IMPORT_STYLE')
if style in ('admin', 'street', 'address', 'full', 'extratags'):
- return self.config_dir / f'import-{style}.style'
+ return self.config_dir / f'import-{style}.lua'
return self.find_config_file('', 'IMPORT_STYLE')
- def get_os_env(self) -> Dict[str, Optional[str]]:
+ def get_os_env(self) -> Dict[str, str]:
""" Return a copy of the OS environment with the Nominatim configuration
merged in.
"""
- env = dict(self._config)
+ env = {k: v for k, v in self._config.items() if v is not None}
env.update(self.environ)
return env
return result
+ def load_plugin_module(self, module_name: str, internal_path: str) -> Any:
+ """ Load a Python module as a plugin.
+
+ The module_name may have three variants:
+
+ * A name without any '.' is assumed to be an internal module
+ and will be searched relative to `internal_path`.
+ * If the name ends in `.py`, module_name is assumed to be a
+ file name relative to the project directory.
+ * Any other name is assumed to be an absolute module name.
+
+ In either of the variants the module name must start with a letter.
+ """
+ if not module_name or not module_name[0].isidentifier():
+ raise UsageError(f'Invalid module name {module_name}')
+
+ if '.' not in module_name:
+ module_name = module_name.replace('-', '_')
+ full_module = f'{internal_path}.{module_name}'
+ return sys.modules.get(full_module) or importlib.import_module(full_module)
+
+ if module_name.endswith('.py'):
+ if self.project_dir is None or not (self.project_dir / module_name).exists():
+ raise UsageError(f"Cannot find module '{module_name}' in project directory.")
+
+ if module_name in self._private_plugins:
+ return self._private_plugins[module_name]
+
+ file_path = str(self.project_dir / module_name)
+ spec = importlib.util.spec_from_file_location(module_name, file_path)
+ if spec:
+ module = importlib.util.module_from_spec(spec)
+ # Do not add to global modules because there is no standard
+ # module name that Python can resolve.
+ self._private_plugins[module_name] = module
+ assert spec.loader is not None
+ spec.loader.exec_module(module)
+
+ return module
+
+ return sys.modules.get(module_name) or importlib.import_module(module_name)
+
+
def find_config_file(self, filename: StrPath,
config: Optional[str] = None) -> Path:
""" Resolve the location of a configuration file given a filename and
projects / nominatim.git / blobdiff