112 lines
3.8 KiB
Python
112 lines
3.8 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright (c) Alibaba, Inc. and its affiliates.
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from abc import ABCMeta, abstractmethod
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from torch.utils.data import Dataset
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from scepter.modules.transform.registry import TRANSFORMS, build_pipeline
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from scepter.modules.utils.config import dict_to_yaml
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from scepter.modules.utils.distribute import we
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from scepter.modules.utils.file_system import FS
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from scepter.modules.utils.logger import get_logger
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from scepter.modules.utils.registry import old_python_version
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class BaseDataset(Dataset, metaclass=ABCMeta):
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para_dict = {
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'MODE': {
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'value': 'train',
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'description': 'solver phase, select from [train, test, eval]'
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},
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'FILE_SYSTEM': {},
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'TRANSFORMS': [{
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'ImageToTensor': {
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'PADDING': {
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'value': None,
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'description': 'padding'
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},
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'PAD_IF_NEEDED': {
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'value': False,
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'description': 'pad if needed'
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},
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'FILL': {
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'value': 0,
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'description': 'fill'
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},
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'PADDING_MODE': {
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'value': 'constant',
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'description': 'padding mode'
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}
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}
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}]
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}
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def __init__(self, cfg, logger=None):
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mode = cfg.get('MODE', 'train')
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pipeline = cfg.get('TRANSFORMS', [])
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super(BaseDataset, self).__init__()
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self.mode = mode
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self.logger = logger
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self.worker_logger = get_logger(name='datasets')
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self.pipeline = build_pipeline(pipeline,
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TRANSFORMS,
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logger=self.worker_logger)
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self.file_systems = cfg.get('FILE_SYSTEM', None)
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if isinstance(self.file_systems, list):
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for file_sys in self.file_systems:
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self.fs_prefix = FS.init_fs_client(file_sys,
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logger=self.logger,
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overwrite=False)
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elif self.file_systems is not None:
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self.fs_prefix = FS.init_fs_client(self.file_systems,
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logger=self.logger,
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overwrite=False)
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self.local_we = we.get_env()
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if old_python_version:
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self.file_systems.logger = None
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def __getitem__(self, index: int):
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item = self._get(index)
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return self.pipeline(item)
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def worker_init_fn(self, worker_id, num_workers=1):
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if isinstance(self.file_systems, list):
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for file_sys in self.file_systems:
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self.fs_prefix = FS.init_fs_client(file_sys,
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logger=self.logger,
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overwrite=False)
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elif self.file_systems is not None:
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self.fs_prefix = FS.init_fs_client(self.file_systems,
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logger=self.logger,
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overwrite=False)
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self.worker_id = worker_id
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self.logger = self.worker_logger
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we.set_env(self.local_we)
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@abstractmethod
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def _get(self, index: int):
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pass
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def __repr__(self) -> str:
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return f'{self.__class__.__name__}: mode={self.mode}, len={len(self)}'
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@staticmethod
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def get_config_template():
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'''
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{ "ENV" :
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{ "description" : "",
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"A" : {
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"value": 1.0,
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"description": ""
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}
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}
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}
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:return:
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'''
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return dict_to_yaml('DATASETS',
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__class__.__name__,
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BaseDataset.para_dict,
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set_name=True)
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