def autogenerate_dataset(
cls,
data: Any,
running_stage: RunningStage,
whole_data_load_fn: Optional[Callable] = None,
per_sample_load_fn: Optional[Callable] = None,
data_pipeline: Optional[DataPipeline] = None,
) -> AutoDataset:
"""
This function is used to generate an ``AutoDataset`` from a ``DataPipeline`` if provided
or from the provided ``whole_data_load_fn``, ``per_sample_load_fn`` functions directly
"""
if whole_data_load_fn is None:
whole_data_load_fn = getattr(
cls.preprocess_cls,
DataPipeline._resolve_function_hierarchy(
'load_data', cls.preprocess_cls, running_stage,
Preprocess))
if per_sample_load_fn is None:
per_sample_load_fn = getattr(
cls.preprocess_cls,
DataPipeline._resolve_function_hierarchy(
'load_sample', cls.preprocess_cls, running_stage,
Preprocess))
return AutoDataset(data,
whole_data_load_fn,
per_sample_load_fn,
data_pipeline,
running_stage=running_stage)
def generate_dataset(
self,
data: Optional[DATA_TYPE],
running_stage: RunningStage,
) -> Optional[Union[AutoDataset, IterableAutoDataset]]:
is_none = data is None
if isinstance(data, Sequence):
is_none = data[0] is None
if not is_none:
from flash.data.data_pipeline import DataPipeline
mock_dataset = typing.cast(AutoDataset, MockDataset())
with CurrentRunningStageFuncContext(running_stage, "load_data", self):
load_data: Callable[[DATA_TYPE, Optional[Any]], Any] = getattr(
self, DataPipeline._resolve_function_hierarchy(
"load_data",
self,
running_stage,
DataSource,
)
)
parameters = signature(load_data).parameters
if len(parameters) > 1 and "dataset" in parameters: # TODO: This was DATASET_KEY before
data = load_data(data, mock_dataset)
else:
data = load_data(data)
if has_len(data):
dataset = AutoDataset(data, self, running_stage)
else:
dataset = IterableAutoDataset(data, self, running_stage)
dataset.__dict__.update(mock_dataset.metadata)
return dataset
def autogenerate_dataset(
cls,
data: Any,
running_stage: RunningStage,
whole_data_load_fn: Optional[Callable] = None,
per_sample_load_fn: Optional[Callable] = None,
data_pipeline: Optional[DataPipeline] = None,
use_iterable_auto_dataset: bool = False,
) -> BaseAutoDataset:
"""
This function is used to generate an ``BaseAutoDataset`` from a ``DataPipeline`` if provided
or from the provided ``whole_data_load_fn``, ``per_sample_load_fn`` functions directly
"""
preprocess = getattr(data_pipeline, '_preprocess_pipeline', None)
if whole_data_load_fn is None:
whole_data_load_fn = getattr(
preprocess,
DataPipeline._resolve_function_hierarchy(
'load_data', preprocess, running_stage, Preprocess))
if per_sample_load_fn is None:
per_sample_load_fn = getattr(
preprocess,
DataPipeline._resolve_function_hierarchy(
'load_sample', preprocess, running_stage, Preprocess))
if use_iterable_auto_dataset:
return IterableAutoDataset(data,
whole_data_load_fn,
per_sample_load_fn,
data_pipeline,
running_stage=running_stage)
return BaseAutoDataset(data,
whole_data_load_fn,
per_sample_load_fn,
data_pipeline,
running_stage=running_stage)
def generate_dataset(
self,
data: Optional[DATA_TYPE],
running_stage: RunningStage,
) -> Optional[Union[AutoDataset, IterableAutoDataset]]:
"""Generate a single dataset with the given input to :meth:`~flash.data.data_source.DataSource.load_data` for
the given ``running_stage``.
Args:
data: The input to :meth:`~flash.data.data_source.DataSource.load_data` to use to create the dataset.
running_stage: The running_stage for this dataset.
Returns:
The constructed :class:`~flash.data.auto_dataset.BaseAutoDataset`.
"""
is_none = data is None
if isinstance(data, Sequence):
is_none = data[0] is None
if not is_none:
from flash.data.data_pipeline import DataPipeline
mock_dataset = typing.cast(AutoDataset, MockDataset())
with CurrentRunningStageFuncContext(running_stage, "load_data",
self):
load_data: Callable[[DATA_TYPE, Optional[Any]], Any] = getattr(
self,
DataPipeline._resolve_function_hierarchy(
"load_data",
self,
running_stage,
DataSource,
))
parameters = signature(load_data).parameters
if len(
parameters
) > 1 and "dataset" in parameters: # TODO: This was DATASET_KEY before
data = load_data(data, mock_dataset)
else:
data = load_data(data)
if has_len(data):
dataset = AutoDataset(data, self, running_stage)
else:
dataset = IterableAutoDataset(data, self, running_stage)
dataset.__dict__.update(mock_dataset.metadata)
return dataset
def running_stage(self, running_stage: RunningStage) -> None:
from flash.data.data_pipeline import DataPipeline # noqa F811
from flash.data.data_source import DataSource # noqa F811 # TODO: something better than this
self._running_stage = running_stage
self._load_sample_context = CurrentRunningStageFuncContext(
self.running_stage, "load_sample", self.data_source)
self.load_sample: Callable[[DATA_TYPE, Optional[Any]], Any] = getattr(
self.data_source,
DataPipeline._resolve_function_hierarchy(
'load_sample',
self.data_source,
self.running_stage,
DataSource,
))
def test_data_pipeline_is_overriden_and_resolve_function_hierarchy(tmpdir):
class CustomPreprocess(Preprocess):
def load_data(self, *_, **__):
pass
def test_load_data(self, *_, **__):
pass
def predict_load_data(self, *_, **__):
pass
def predict_load_sample(self, *_, **__):
pass
def val_load_sample(self, *_, **__):
pass
def val_pre_tensor_transform(self, *_, **__):
pass
def predict_to_tensor_transform(self, *_, **__):
pass
def train_post_tensor_transform(self, *_, **__):
pass
def test_collate(self, *_, **__):
pass
def val_per_sample_transform_on_device(self, *_, **__):
pass
def train_per_batch_transform_on_device(self, *_, **__):
pass
def test_per_batch_transform_on_device(self, *_, **__):
pass
preprocess = CustomPreprocess()
data_pipeline = DataPipeline(preprocess)
train_func_names = {
k: data_pipeline._resolve_function_hierarchy(
k, data_pipeline._preprocess_pipeline, RunningStage.TRAINING, Preprocess
)
for k in data_pipeline.PREPROCESS_FUNCS
}
val_func_names = {
k: data_pipeline._resolve_function_hierarchy(
k, data_pipeline._preprocess_pipeline, RunningStage.VALIDATING, Preprocess
)
for k in data_pipeline.PREPROCESS_FUNCS
}
test_func_names = {
k: data_pipeline._resolve_function_hierarchy(
k, data_pipeline._preprocess_pipeline, RunningStage.TESTING, Preprocess
)
for k in data_pipeline.PREPROCESS_FUNCS
}
predict_func_names = {
k: data_pipeline._resolve_function_hierarchy(
k, data_pipeline._preprocess_pipeline, RunningStage.PREDICTING, Preprocess
)
for k in data_pipeline.PREPROCESS_FUNCS
}
# load_data
assert train_func_names["load_data"] == "load_data"
assert val_func_names["load_data"] == "load_data"
assert test_func_names["load_data"] == "test_load_data"
assert predict_func_names["load_data"] == "predict_load_data"
# load_sample
assert train_func_names["load_sample"] == "load_sample"
assert val_func_names["load_sample"] == "val_load_sample"
assert test_func_names["load_sample"] == "load_sample"
assert predict_func_names["load_sample"] == "predict_load_sample"
# pre_tensor_transform
assert train_func_names["pre_tensor_transform"] == "pre_tensor_transform"
assert val_func_names["pre_tensor_transform"] == "val_pre_tensor_transform"
assert test_func_names["pre_tensor_transform"] == "pre_tensor_transform"
assert predict_func_names["pre_tensor_transform"] == "pre_tensor_transform"
# to_tensor_transform
assert train_func_names["to_tensor_transform"] == "to_tensor_transform"
assert val_func_names["to_tensor_transform"] == "to_tensor_transform"
assert test_func_names["to_tensor_transform"] == "to_tensor_transform"
assert predict_func_names["to_tensor_transform"] == "predict_to_tensor_transform"
# post_tensor_transform
assert train_func_names["post_tensor_transform"] == "train_post_tensor_transform"
assert val_func_names["post_tensor_transform"] == "post_tensor_transform"
assert test_func_names["post_tensor_transform"] == "post_tensor_transform"
assert predict_func_names["post_tensor_transform"] == "post_tensor_transform"
# collate
assert train_func_names["collate"] == "collate"
assert val_func_names["collate"] == "collate"
assert test_func_names["collate"] == "test_collate"
assert predict_func_names["collate"] == "collate"
# per_sample_transform_on_device
assert train_func_names["per_sample_transform_on_device"] == "per_sample_transform_on_device"
assert val_func_names["per_sample_transform_on_device"] == "val_per_sample_transform_on_device"
assert test_func_names["per_sample_transform_on_device"] == "per_sample_transform_on_device"
assert predict_func_names["per_sample_transform_on_device"] == "per_sample_transform_on_device"
# per_batch_transform_on_device
assert train_func_names["per_batch_transform_on_device"] == "train_per_batch_transform_on_device"
assert val_func_names["per_batch_transform_on_device"] == "per_batch_transform_on_device"
assert test_func_names["per_batch_transform_on_device"] == "test_per_batch_transform_on_device"
assert predict_func_names["per_batch_transform_on_device"] == "per_batch_transform_on_device"
train_worker_preprocessor = data_pipeline.worker_preprocessor(RunningStage.TRAINING)
val_worker_preprocessor = data_pipeline.worker_preprocessor(RunningStage.VALIDATING)
test_worker_preprocessor = data_pipeline.worker_preprocessor(RunningStage.TESTING)
predict_worker_preprocessor = data_pipeline.worker_preprocessor(RunningStage.PREDICTING)
_seq = train_worker_preprocessor.per_sample_transform
assert _seq.pre_tensor_transform.func == preprocess.pre_tensor_transform
assert _seq.to_tensor_transform.func == preprocess.to_tensor_transform
assert _seq.post_tensor_transform.func == preprocess.train_post_tensor_transform
assert train_worker_preprocessor.collate_fn.func == default_collate
assert train_worker_preprocessor.per_batch_transform.func == preprocess.per_batch_transform
_seq = val_worker_preprocessor.per_sample_transform
assert _seq.pre_tensor_transform.func == preprocess.val_pre_tensor_transform
assert _seq.to_tensor_transform.func == preprocess.to_tensor_transform
assert _seq.post_tensor_transform.func == preprocess.post_tensor_transform
assert val_worker_preprocessor.collate_fn.func == data_pipeline._identity
assert val_worker_preprocessor.per_batch_transform.func == preprocess.per_batch_transform
_seq = test_worker_preprocessor.per_sample_transform
assert _seq.pre_tensor_transform.func == preprocess.pre_tensor_transform
assert _seq.to_tensor_transform.func == preprocess.to_tensor_transform
assert _seq.post_tensor_transform.func == preprocess.post_tensor_transform
assert test_worker_preprocessor.collate_fn.func == preprocess.test_collate
assert test_worker_preprocessor.per_batch_transform.func == preprocess.per_batch_transform
_seq = predict_worker_preprocessor.per_sample_transform
assert _seq.pre_tensor_transform.func == preprocess.pre_tensor_transform
assert _seq.to_tensor_transform.func == preprocess.predict_to_tensor_transform
assert _seq.post_tensor_transform.func == preprocess.post_tensor_transform
assert predict_worker_preprocessor.collate_fn.func == default_collate
assert predict_worker_preprocessor.per_batch_transform.func == preprocess.per_batch_transform
