Source code for deeppavlov.core.common.metrics_registry

import importlib
import json
from pathlib import Path
from typing import Callable, Any

from deeppavlov.core.common.errors import ConfigError
from deeppavlov.core.common.log import get_logger

log = get_logger(__name__)

_registry_path = Path(__file__).parent / 'metrics_registry.json'
if _registry_path.exists():
    with'utf-8') as f:
        _REGISTRY = json.load(f)
    _REGISTRY = {}

[docs]def fn_from_str(name: str) -> Callable[..., Any]: """Returns a function object with the name given in string.""" try: module_name, fn_name = name.split(':') except ValueError: raise ConfigError('Expected function description in a `module.submodules:function_name` form, but got `{}`' .format(name)) return getattr(importlib.import_module(module_name), fn_name)
[docs]def register_metric(metric_name: str) -> Callable[..., Any]: """Decorator for metric registration.""" def decorate(fn): fn_name = fn.__module__ + ':' + fn.__name__ if metric_name in _REGISTRY and _REGISTRY[metric_name] != fn_name: log.warning('"{}" is already registered as a metric name, the old function will be ignored' .format(metric_name)) _REGISTRY[metric_name] = fn_name return fn return decorate
[docs]def get_metric_by_name(name: str) -> Callable[..., Any]: """Returns a metric callable with a corresponding name.""" if name not in _REGISTRY: raise ConfigError(f'"{name}" is not registered as a metric') return fn_from_str(_REGISTRY[name])