62 lines
2.0 KiB
Python
62 lines
2.0 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright (c) Alibaba, Inc. and its affiliates.
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import inspect
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from scepter.modules.utils.registry import (Registry, deep_copy,
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old_python_version)
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def build_sampler_config(cfg, registry, logger=None, **kwargs):
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""" Default builder function.
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Args:
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cfg (objective attribution): A set of objective attirbutions which contain
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parameters passes to target class or function.
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Must contains key 'type', indicates the target class or function name.
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registry (Registry): An registry to search target class or function.
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kwargs (dict, optional): Other params not in config dict.
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Returns:
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Target class object or object returned by invoking function.
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Raises:
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TypeError:
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KeyError:
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Exception:
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"""
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from scepter.modules.utils.config import Config
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if not isinstance(cfg, Config):
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raise TypeError(f'config must be type dict, got {type(cfg)}')
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if not cfg.have('NAME'):
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raise KeyError(f'config must contain key NAME, got {cfg}')
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if not isinstance(registry, Registry):
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raise TypeError(
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f'registry must be type Registry, got {type(registry)}')
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cfg = deep_copy(cfg)
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req_type = cfg.get('NAME')
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if isinstance(req_type, str):
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req_type_entry = registry.get(req_type)
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if req_type_entry is None:
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raise KeyError(f'{req_type} not found in {registry.name} registry')
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if kwargs is not None:
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cfg._update_dict(kwargs)
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if old_python_version:
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logger = None
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if inspect.isclass(req_type_entry):
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try:
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sampler = req_type_entry(cfg, logger=logger)
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return sampler
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except Exception as e:
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raise Exception(f'Failed to init class {req_type_entry}, with {e}')
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else:
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raise TypeError(f'type must be class, got {type(req_type_entry)}')
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SAMPLERS = Registry('SAMPLERS', build_func=build_sampler_config)
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