mindspore2022/mindspore/dataset/engine/validators.py

984 lines
35 KiB
Python

# Copyright 2019 Huawei Technologies Co., Ltd
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# ==============================================================================
"""Built-in validators.
"""
import inspect as ins
import os
from functools import wraps
from multiprocessing import cpu_count
from mindspore._c_expression import typing
from . import samplers
from . import datasets
INT32_MAX = 2147483647
valid_detype = [
"bool", "int8", "int16", "int32", "int64", "uint8", "uint16",
"uint32", "uint64", "float16", "float32", "float64"
]
def check(method):
"""Check the function parameters and return the function ."""
func_name = method.__name__
# Required parameter
req_param_int = []
req_param_bool = []
# Non-required parameter
nreq_param_int = []
nreq_param_bool = []
if func_name in 'repeat':
nreq_param_int = ['count', 'prefetch_size']
if func_name in 'take':
req_param_int = ['count']
nreq_param_int = ['prefetch_size']
elif func_name in 'shuffle':
req_param_int = ['buffer_size']
nreq_param_bool = ['reshuffle_each_iteration']
nreq_param_int = ['prefetch_size', 'seed']
elif func_name in 'batch':
req_param_int = ['batch_size']
nreq_param_int = ['num_parallel_workers', 'prefetch_size']
nreq_param_bool = ['drop_remainder']
elif func_name in ('zip', 'filter', 'cache', 'rename', 'project'):
nreq_param_int = ['prefetch_size']
elif func_name in ('map', '__init__'):
nreq_param_int = ['num_parallel_workers', 'prefetch_size', 'seed']
nreq_param_bool = ['block_reader']
@wraps(method)
def wrapper(*args, **kwargs):
def _make_key():
sig = ins.signature(method)
params = sig.parameters
keys = list(params.keys())
param_dic = dict()
for name, value in enumerate(args):
param_dic[keys[name]] = value
param_dic.update(zip(params.keys(), args))
param_dic.update(kwargs)
for name, value in params.items():
if name not in param_dic:
param_dic[name] = value.default
return param_dic
# check type
def _check_param_type(arg, param_name, param_type=None):
if param_type is not None and not isinstance(arg, param_type):
raise ValueError(
"The %s function %s type error!" % (func_name, param_name))
# check range
def _check_param_range(arg, param_name):
if isinstance(arg, int) and param_name == "seed" and (
arg < 0 or arg > 2147483647):
raise ValueError(
"The %s function %s exceeds the boundary!" % (
func_name, param_name))
if isinstance(arg, int) and param_name == "count" and ((arg <= 0 and arg != -1) or arg > 2147483647):
raise ValueError(
"The %s function %s exceeds the boundary!" % (
func_name, param_name))
if isinstance(arg, int) and param_name == "prefetch_size" and (
arg <= 0 or arg > 1024):
raise ValueError(
"The %s function %s exceeds the boundary!" % (
func_name, param_name))
if isinstance(arg, int) and param_name == "num_parallel_workers" and (
arg < 1 or arg > cpu_count()):
raise ValueError(
"The %s function %s exceeds the boundary(%s)!" % (
func_name, param_name, cpu_count()))
if isinstance(arg, int) and param_name != "seed" \
and param_name != "count" and param_name != "prefetch_size" \
and param_name != "num_parallel_workers" and (arg < 1 or arg > 2147483647):
raise ValueError(
"The %s function %s exceeds the boundary!" % (
func_name, param_name))
key = _make_key()
# check integer
for karg in req_param_int:
_check_param_type(key[karg], karg, int)
_check_param_range(key[karg], karg)
for karg in nreq_param_int:
if karg in key:
if key[karg] is not None:
_check_param_type(key[karg], karg, int)
_check_param_range(key[karg], karg)
# check bool
for karg in req_param_bool:
_check_param_type(key[karg], karg, bool)
for karg in nreq_param_bool:
if karg in key:
if key[karg] is not None:
_check_param_type(key[karg], karg, bool)
if func_name in '__init__':
if 'columns_list' in key.keys():
columns_list = key['columns_list']
if columns_list is not None:
_check_param_type(columns_list, 'columns_list', list)
if 'columns' in key.keys():
columns = key['columns']
if columns is not None:
_check_param_type(columns, 'columns', list)
if 'partitions' in key.keys():
partitions = key['partitions']
if partitions is not None:
_check_param_type(partitions, 'partitions', list)
if 'schema' in key.keys():
schema = key['schema']
if schema is not None:
check_filename(schema)
if not os.path.isfile(schema) or not os.access(schema, os.R_OK):
raise ValueError(
"The file %s does not exist or permission denied!" % schema)
if 'dataset_dir' in key.keys():
dataset_dir = key['dataset_dir']
if dataset_dir is not None:
if not os.path.isdir(dataset_dir) or not os.access(dataset_dir, os.R_OK):
raise ValueError(
"The folder %s does not exist or permission denied!" % dataset_dir)
if 'dataset_files' in key.keys():
dataset_files = key['dataset_files']
if not dataset_files:
raise ValueError(
"The dataset file does not exists!")
if dataset_files is not None:
_check_param_type(dataset_files, 'dataset_files', list)
for file in dataset_files:
if not os.path.isfile(file) or not os.access(file, os.R_OK):
raise ValueError(
"The file %s does not exist or permission denied!" % file)
if 'dataset_file' in key.keys():
dataset_file = key['dataset_file']
if not dataset_file:
raise ValueError(
"The dataset file does not exists!")
check_filename(dataset_file)
if dataset_file is not None:
if not os.path.isfile(dataset_file) or not os.access(dataset_file, os.R_OK):
raise ValueError(
"The file %s does not exist or permission denied!" % dataset_file)
return method(*args, **kwargs)
return wrapper
def check_valid_detype(type_):
if type_ not in valid_detype:
raise ValueError("Unknown column type")
return True
def check_filename(path):
"""
check the filename in the path
Args:
path (str): the path
Returns:
Exception: when error
"""
if not isinstance(path, str):
raise ValueError("path: {} is not string".format(path))
filename = os.path.basename(path)
# '#', ':', '|', ' ', '}', '"', '+', '!', ']', '[', '\\', '`',
# '&', '.', '/', '@', "'", '^', ',', '_', '<', ';', '~', '>',
# '*', '(', '%', ')', '-', '=', '{', '?', '$'
forbidden_symbols = set(r'\/:*?"<>|`&\';')
if set(filename) & forbidden_symbols:
raise ValueError(r"filename should not contains \/:*?\"<>|`&;\'")
if filename.startswith(' ') or filename.endswith(' '):
raise ValueError("filename should not start/end with space")
return True
def make_param_dict(method, args, kwargs):
"""Return a dictionary of the method's args and kwargs."""
sig = ins.signature(method)
params = sig.parameters
keys = list(params.keys())
param_dict = dict()
try:
for name, value in enumerate(args):
param_dict[keys[name]] = value
except IndexError:
raise TypeError("{0}() expected {1} arguments, but {2} were given".format(
method.__name__, len(keys) - 1, len(args) - 1))
param_dict.update(zip(params.keys(), args))
param_dict.update(kwargs)
for name, value in params.items():
if name not in param_dict:
param_dict[name] = value.default
return param_dict
def check_type(param, param_name, valid_type):
if (not isinstance(param, valid_type)) or (valid_type == int and isinstance(param, bool)):
raise TypeError("Wrong input type for {0}, should be {1}, got {2}".format(param_name, valid_type, type(param)))
def check_param_type(param_list, param_dict, param_type):
for param_name in param_list:
if param_dict.get(param_name) is not None:
if param_name == 'num_parallel_workers':
check_num_parallel_workers(param_dict.get(param_name))
if param_name == 'num_samples':
check_num_samples(param_dict.get(param_name))
else:
check_type(param_dict.get(param_name), param_name, param_type)
def check_positive_int32(param, param_name):
check_interval_closed(param, param_name, [1, INT32_MAX])
def check_interval_closed(param, param_name, valid_range):
if param < valid_range[0] or param > valid_range[1]:
raise ValueError("The value of {0} exceeds the closed interval range {1}.".format(param_name, valid_range))
def check_num_parallel_workers(value):
check_type(value, 'num_parallel_workers', int)
if value < 1 or value > cpu_count():
raise ValueError("num_parallel_workers exceeds the boundary between 1 and {}!".format(cpu_count()))
def check_num_samples(value):
check_type(value, 'num_samples', int)
if value <= 0:
raise ValueError("num_samples must be greater than 0!")
def check_dataset_dir(dataset_dir):
if not os.path.isdir(dataset_dir) or not os.access(dataset_dir, os.R_OK):
raise ValueError("The folder {} does not exist or permission denied!".format(dataset_dir))
def check_dataset_file(dataset_file):
check_filename(dataset_file)
if not os.path.isfile(dataset_file) or not os.access(dataset_file, os.R_OK):
raise ValueError("The file {} does not exist or permission denied!".format(dataset_file))
def check_sampler_shuffle_shard_options(param_dict):
"""check for valid shuffle, sampler, num_shards, and shard_id inputs."""
shuffle, sampler = param_dict.get('shuffle'), param_dict.get('sampler')
num_shards, shard_id = param_dict.get('num_shards'), param_dict.get('shard_id')
if sampler is not None and not isinstance(sampler, (samplers.BuiltinSampler, samplers.Sampler)):
raise ValueError("sampler is not a valid Sampler type.")
if sampler is not None:
if shuffle is not None:
raise RuntimeError("sampler and shuffle cannot be specified at the same time.")
if num_shards is not None:
raise RuntimeError("sampler and sharding cannot be specified at the same time.")
if num_shards is not None:
if shard_id is None:
raise RuntimeError("num_shards is specified and currently requires shard_id as well.")
if shard_id < 0 or shard_id >= num_shards:
raise ValueError("shard_id is invalid, shard_id={}".format(shard_id))
if num_shards is None and shard_id is not None:
raise RuntimeError("shard_id is specified but num_shards is not.")
def check_imagefolderdatasetv2(method):
"""A wrapper that wrap a parameter checker to the original Dataset(ImageFolderDatasetV2)."""
@wraps(method)
def new_method(*args, **kwargs):
param_dict = make_param_dict(method, args, kwargs)
nreq_param_int = ['num_samples', 'num_parallel_workers', 'num_shards', 'shard_id']
nreq_param_bool = ['shuffle', 'decode']
nreq_param_list = ['extensions']
nreq_param_dict = ['class_indexing']
# check dataset_dir; required argument
dataset_dir = param_dict.get('dataset_dir')
if dataset_dir is None:
raise ValueError("dataset_dir is not provided.")
check_dataset_dir(dataset_dir)
check_param_type(nreq_param_int, param_dict, int)
check_param_type(nreq_param_bool, param_dict, bool)
check_param_type(nreq_param_list, param_dict, list)
check_param_type(nreq_param_dict, param_dict, dict)
check_sampler_shuffle_shard_options(param_dict)
return method(*args, **kwargs)
return new_method
def check_mnist_cifar_dataset(method):
"""A wrapper that wrap a parameter checker to the original Dataset(ManifestDataset, Cifar10/100Dataset)."""
@wraps(method)
def new_method(*args, **kwargs):
param_dict = make_param_dict(method, args, kwargs)
nreq_param_int = ['num_samples', 'num_parallel_workers', 'num_shards', 'shard_id']
nreq_param_bool = ['shuffle']
# check dataset_dir; required argument
dataset_dir = param_dict.get('dataset_dir')
if dataset_dir is None:
raise ValueError("dataset_dir is not provided.")
check_dataset_dir(dataset_dir)
check_param_type(nreq_param_int, param_dict, int)
check_param_type(nreq_param_bool, param_dict, bool)
check_sampler_shuffle_shard_options(param_dict)
return method(*args, **kwargs)
return new_method
def check_manifestdataset(method):
"""A wrapper that wrap a parameter checker to the original Dataset(ManifestDataset)."""
@wraps(method)
def new_method(*args, **kwargs):
param_dict = make_param_dict(method, args, kwargs)
nreq_param_int = ['num_samples', 'num_parallel_workers', 'num_shards', 'shard_id']
nreq_param_bool = ['shuffle', 'decode']
nreq_param_str = ['usage']
nreq_param_dict = ['class_indexing']
# check dataset_file; required argument
dataset_file = param_dict.get('dataset_file')
if dataset_file is None:
raise ValueError("dataset_file is not provided.")
check_dataset_file(dataset_file)
check_param_type(nreq_param_int, param_dict, int)
check_param_type(nreq_param_bool, param_dict, bool)
check_param_type(nreq_param_str, param_dict, str)
check_param_type(nreq_param_dict, param_dict, dict)
check_sampler_shuffle_shard_options(param_dict)
return method(*args, **kwargs)
return new_method
def check_tfrecorddataset(method):
"""A wrapper that wrap a parameter checker to the original Dataset(TFRecordDataset)."""
@wraps(method)
def new_method(*args, **kwargs):
param_dict = make_param_dict(method, args, kwargs)
nreq_param_int = ['num_samples', 'num_parallel_workers', 'num_shards', 'shard_id']
nreq_param_list = ['columns_list']
nreq_param_bool = ['shard_equal_rows']
# check dataset_files; required argument
dataset_files = param_dict.get('dataset_files')
if dataset_files is None:
raise ValueError("dataset_files is not provided.")
if not isinstance(dataset_files, (str, list)):
raise TypeError("dataset_files should be of type str or a list of strings.")
check_param_type(nreq_param_int, param_dict, int)
check_param_type(nreq_param_list, param_dict, list)
check_param_type(nreq_param_bool, param_dict, bool)
check_sampler_shuffle_shard_options(param_dict)
return method(*args, **kwargs)
return new_method
def check_vocdataset(method):
"""A wrapper that wrap a parameter checker to the original Dataset(VOCDataset)."""
@wraps(method)
def new_method(*args, **kwargs):
param_dict = make_param_dict(method, args, kwargs)
nreq_param_int = ['num_samples', 'num_parallel_workers', 'num_shards', 'shard_id']
nreq_param_bool = ['shuffle', 'decode']
# check dataset_dir; required argument
dataset_dir = param_dict.get('dataset_dir')
if dataset_dir is None:
raise ValueError("dataset_dir is not provided.")
check_dataset_dir(dataset_dir)
check_param_type(nreq_param_int, param_dict, int)
check_param_type(nreq_param_bool, param_dict, bool)
check_sampler_shuffle_shard_options(param_dict)
return method(*args, **kwargs)
return new_method
def check_celebadataset(method):
"""A wrapper that wrap a parameter checker to the original Dataset(CelebADataset)."""
@wraps(method)
def new_method(*args, **kwargs):
param_dict = make_param_dict(method, args, kwargs)
nreq_param_int = ['num_samples', 'num_parallel_workers', 'num_shards', 'shard_id']
nreq_param_bool = ['shuffle', 'decode']
nreq_param_list = ['extensions']
nreq_param_str = ['dataset_type']
# check dataset_dir; required argument
dataset_dir = param_dict.get('dataset_dir')
if dataset_dir is None:
raise ValueError("dataset_dir is not provided.")
check_dataset_dir(dataset_dir)
check_param_type(nreq_param_int, param_dict, int)
check_param_type(nreq_param_bool, param_dict, bool)
check_param_type(nreq_param_list, param_dict, list)
check_param_type(nreq_param_str, param_dict, str)
dataset_type = param_dict.get('dataset_type')
if dataset_type is not None and dataset_type not in ('all', 'train', 'valid', 'test'):
raise ValueError("dataset_type should be one of 'all', 'train', 'valid' or 'test'.")
check_sampler_shuffle_shard_options(param_dict)
sampler = param_dict.get('sampler')
if sampler is not None and isinstance(sampler, samplers.PKSampler):
raise ValueError("CelebADataset does not support PKSampler.")
return method(*args, **kwargs)
return new_method
def check_minddataset(method):
"""A wrapper that wrap a parameter checker to the original Dataset(MindDataset)."""
@wraps(method)
def new_method(*args, **kwargs):
param_dict = make_param_dict(method, args, kwargs)
nreq_param_int = ['num_samples', 'num_parallel_workers', 'seed', 'num_shards', 'shard_id']
nreq_param_list = ['columns_list']
nreq_param_bool = ['block_reader']
# check dataset_file; required argument
dataset_file = param_dict.get('dataset_file')
if dataset_file is None:
raise ValueError("dataset_file is not provided.")
if isinstance(dataset_file, list):
for f in dataset_file:
check_dataset_file(f)
else:
check_dataset_file(dataset_file)
check_param_type(nreq_param_int, param_dict, int)
check_param_type(nreq_param_list, param_dict, list)
check_param_type(nreq_param_bool, param_dict, bool)
num_shards, shard_id = param_dict.get('num_shards'), param_dict.get('shard_id')
if (num_shards is not None and shard_id is None) or (num_shards is None and shard_id is not None):
raise ValueError("num_shards and shard_id need to be set or not set at the same time")
return method(*args, **kwargs)
return new_method
def check_generatordataset(method):
"""A wrapper that wrap a parameter checker to the original Dataset(GeneratorDataset)."""
@wraps(method)
def new_method(*args, **kwargs):
param_dict = make_param_dict(method, args, kwargs)
# check generator_function; required argument
source = param_dict.get('source')
if source is None:
raise ValueError("source is not provided.")
if not callable(source):
try:
iter(source)
except TypeError:
raise TypeError("source should be callable, iterable or random accessible")
# check column_names or schema; required argument
column_names = param_dict.get('column_names')
schema = param_dict.get('schema')
if column_names is None and schema is None:
raise ValueError("Neither columns_names not schema are provided.")
if schema is not None:
if not isinstance(schema, datasets.Schema) and not isinstance(schema, str):
raise ValueError("schema should be a path to schema file or a schema object.")
# check optional argument
nreq_param_int = ["num_samples", "num_parallel_workers", "num_shards", "shard_id"]
check_param_type(nreq_param_int, param_dict, int)
nreq_param_list = ["column_types"]
check_param_type(nreq_param_list, param_dict, list)
nreq_param_bool = ["shuffle"]
check_param_type(nreq_param_bool, param_dict, bool)
num_shards = param_dict.get("num_shards")
shard_id = param_dict.get("shard_id")
if (num_shards is None) != (shard_id is None):
# These two parameters appear together.
raise ValueError("num_shards and shard_id need to be passed in together")
if num_shards is not None:
if shard_id >= num_shards:
raise ValueError("shard_id should be less than num_shards")
sampler = param_dict.get("sampler")
if sampler is not None:
if isinstance(sampler, samplers.PKSampler):
raise ValueError("PKSampler is not supported by GeneratorDataset")
if not isinstance(sampler, (samplers.SequentialSampler, samplers.DistributedSampler,
samplers.RandomSampler, samplers.SubsetRandomSampler,
samplers.WeightedRandomSampler, samplers.Sampler)):
try:
iter(sampler)
except TypeError:
raise TypeError("sampler should be either iterable or from mindspore.dataset.samplers")
if sampler is not None and not hasattr(source, "__getitem__"):
raise ValueError("sampler is not supported if source does not have attribute '__getitem__'")
if num_shards is not None and not hasattr(source, "__getitem__"):
raise ValueError("num_shards is not supported if source does not have attribute '__getitem__'")
return method(*args, **kwargs)
return new_method
def check_batch_size(batch_size):
if not (isinstance(batch_size, int) or (callable(batch_size))):
raise ValueError("batch_size should either be an int or a callable.")
if callable(batch_size):
sig = ins.signature(batch_size)
if len(sig.parameters) != 1:
raise ValueError("batch_size callable should take one parameter (BatchInfo).")
def check_count(count):
check_type(count, 'count', int)
if (count <= 0 and count != -1) or count > INT32_MAX:
raise ValueError("count should be either -1 or positive integer.")
def check_columns(columns, name):
if isinstance(columns, list):
for column in columns:
if not isinstance(column, str):
raise TypeError("Each column in {0} should be of type str. Got {1}.".format(name, type(column)))
elif not isinstance(columns, str):
raise TypeError("{} should be either a list of strings or a single string.".format(name))
def check_pad_info(key, val):
"""check the key and value pair of pad_info in batch"""
check_type(key, "key in pad_info", str)
if val is not None:
assert len(val) == 2, "value of pad_info should be a tuple of size 2"
check_type(val, "value in pad_info", tuple)
if val[0] is not None:
check_type(val[0], "pad_shape", list)
for dim in val[0]:
if dim is not None:
check_type(dim, "dim in pad_shape", int)
assert dim > 0, "pad shape should be positive integers"
if val[1] is not None:
check_type(val[1], "pad_value", (int, float))
def check_batch(method):
"""check the input arguments of batch."""
@wraps(method)
def new_method(*args, **kwargs):
param_dict = make_param_dict(method, args, kwargs)
nreq_param_int = ['num_parallel_workers']
nreq_param_bool = ['drop_remainder']
nreq_param_columns = ['input_columns']
# check batch_size; required argument
batch_size = param_dict.get("batch_size")
if batch_size is None:
raise ValueError("batch_size is not provided.")
check_batch_size(batch_size)
check_param_type(nreq_param_int, param_dict, int)
check_param_type(nreq_param_bool, param_dict, bool)
if (param_dict.get('pad_info') is not None) and (param_dict.get('per_batch_map') is not None):
raise ValueError("pad_info and per_batch_map can't both be set")
if param_dict.get('pad_info') is not None:
check_type(param_dict["pad_info"], "pad_info", dict)
for k, v in param_dict.get('pad_info').items():
check_pad_info(k, v)
for param_name in nreq_param_columns:
param = param_dict.get(param_name)
if param is not None:
check_columns(param, param_name)
per_batch_map, input_columns = param_dict.get('per_batch_map'), param_dict.get('input_columns')
if (per_batch_map is None) != (input_columns is None):
# These two parameters appear together.
raise ValueError("per_batch_map and input_columns need to be passed in together.")
if input_columns is not None:
if not input_columns: # Check whether input_columns is empty.
raise ValueError("input_columns can not be empty")
if len(input_columns) != (len(ins.signature(per_batch_map).parameters) - 1):
raise ValueError("the signature of per_batch_map should match with input columns")
return method(*args, **kwargs)
return new_method
def check_sync_wait(method):
"""check the input arguments of sync_wait."""
@wraps(method)
def new_method(*args, **kwargs):
param_dict = make_param_dict(method, args, kwargs)
nreq_param_str = ['condition_name']
nreq_param_int = ['step_size']
check_param_type(nreq_param_int, param_dict, int)
check_param_type(nreq_param_str, param_dict, str)
return method(*args, **kwargs)
return new_method
def check_shuffle(method):
"""check the input arguments of shuffle."""
@wraps(method)
def new_method(*args, **kwargs):
param_dict = make_param_dict(method, args, kwargs)
# check buffer_size; required argument
buffer_size = param_dict.get("buffer_size")
if buffer_size is None:
raise ValueError("buffer_size is not provided.")
check_type(buffer_size, 'buffer_size', int)
check_interval_closed(buffer_size, 'buffer_size', [2, INT32_MAX])
return method(*args, **kwargs)
return new_method
def check_map(method):
"""check the input arguments of map."""
@wraps(method)
def new_method(*args, **kwargs):
param_dict = make_param_dict(method, args, kwargs)
nreq_param_list = ['columns_order']
nreq_param_int = ['num_parallel_workers']
nreq_param_columns = ['input_columns', 'output_columns']
nreq_param_bool = ['python_multiprocessing']
check_param_type(nreq_param_list, param_dict, list)
check_param_type(nreq_param_int, param_dict, int)
check_param_type(nreq_param_bool, param_dict, bool)
for param_name in nreq_param_columns:
param = param_dict.get(param_name)
if param is not None:
check_columns(param, param_name)
return method(*args, **kwargs)
return new_method
def check_filter(method):
""""check the input arguments of filter."""
@wraps(method)
def new_method(*args, **kwargs):
param_dict = make_param_dict(method, args, kwargs)
predicate = param_dict.get("predicate")
if not callable(predicate):
raise ValueError("Predicate should be a python function or a callable python object.")
nreq_param_int = ['num_parallel_workers']
check_param_type(nreq_param_int, param_dict, int)
param_name = "input_columns"
param = param_dict.get(param_name)
if param is not None:
check_columns(param, param_name)
return method(*args, **kwargs)
return new_method
def check_repeat(method):
"""check the input arguments of repeat."""
@wraps(method)
def new_method(*args, **kwargs):
param_dict = make_param_dict(method, args, kwargs)
count = param_dict.get('count')
if count is not None:
check_count(count)
return method(*args, **kwargs)
return new_method
def check_skip(method):
"""check the input arguments of skip."""
@wraps(method)
def new_method(*args, **kwargs):
param_dict = make_param_dict(method, args, kwargs)
count = param_dict.get('count')
check_type(count, 'count', int)
if count < 0:
raise ValueError("Skip count must be positive integer or 0.")
return method(*args, **kwargs)
return new_method
def check_take(method):
"""check the input arguments of take."""
@wraps(method)
def new_method(*args, **kwargs):
param_dict = make_param_dict(method, args, kwargs)
count = param_dict.get('count')
check_count(count)
return method(*args, **kwargs)
return new_method
def check_zip(method):
"""check the input arguments of zip."""
@wraps(method)
def new_method(*args, **kwargs):
param_dict = make_param_dict(method, args, kwargs)
# check datasets; required argument
ds = param_dict.get("datasets")
if ds is None:
raise ValueError("datasets is not provided.")
check_type(ds, 'datasets', tuple)
return method(*args, **kwargs)
return new_method
def check_zip_dataset(method):
"""check the input arguments of zip method in `Dataset`."""
@wraps(method)
def new_method(*args, **kwargs):
param_dict = make_param_dict(method, args, kwargs)
# check datasets; required argument
ds = param_dict.get("datasets")
if ds is None:
raise ValueError("datasets is not provided.")
if not isinstance(ds, (tuple, datasets.Dataset)):
raise ValueError("datasets is not tuple or of type Dataset.")
return method(*args, **kwargs)
return new_method
def check_rename(method):
"""check the input arguments of rename."""
@wraps(method)
def new_method(*args, **kwargs):
param_dict = make_param_dict(method, args, kwargs)
req_param_columns = ['input_columns', 'output_columns']
# check req_param_list; required arguments
for param_name in req_param_columns:
param = param_dict.get(param_name)
if param is None:
raise ValueError("{} is not provided.".format(param_name))
check_columns(param, param_name)
input_size, output_size = 1, 1
if isinstance(param_dict.get(req_param_columns[0]), list):
input_size = len(param_dict.get(req_param_columns[0]))
if isinstance(param_dict.get(req_param_columns[1]), list):
output_size = len(param_dict.get(req_param_columns[1]))
if input_size != output_size:
raise ValueError("Number of column in input_columns and output_columns is not equal.")
return method(*args, **kwargs)
return new_method
def check_project(method):
"""check the input arguments of project."""
@wraps(method)
def new_method(*args, **kwargs):
param_dict = make_param_dict(method, args, kwargs)
# check columns; required argument
columns = param_dict.get("columns")
if columns is None:
raise ValueError("columns is not provided.")
check_columns(columns, 'columns')
return method(*args, **kwargs)
return new_method
def check_shape(shape, name):
if isinstance(shape, list):
for element in shape:
if not isinstance(element, int):
raise TypeError(
"Each element in {0} should be of type int. Got {1}.".format(name, type(element)))
else:
raise TypeError("Expected int list.")
def check_add_column(method):
"""check the input arguments of add_column."""
@wraps(method)
def new_method(*args, **kwargs):
param_dict = make_param_dict(method, args, kwargs)
# check name; required argument
name = param_dict.get("name")
if not isinstance(name, str) or not name:
raise TypeError("Expected non-empty string.")
# check type; required argument
de_type = param_dict.get("de_type")
if de_type is not None:
if not isinstance(de_type, typing.Type) and not check_valid_detype(de_type):
raise ValueError("Unknown column type.")
else:
raise TypeError("Expected non-empty string.")
# check shape
shape = param_dict.get("shape")
if shape is not None:
check_shape(shape, "shape")
return method(*args, **kwargs)
return new_method
def check_textfiledataset(method):
"""A wrapper that wrap a parameter checker to the original Dataset(TextFileDataset)."""
@wraps(method)
def new_method(*args, **kwargs):
param_dict = make_param_dict(method, args, kwargs)
nreq_param_int = ['num_samples', 'num_parallel_workers', 'num_shards', 'shard_id']
# check dataset_files; required argument
dataset_files = param_dict.get('dataset_files')
if dataset_files is None:
raise ValueError("dataset_files is not provided.")
if not isinstance(dataset_files, (str, list)):
raise TypeError("dataset_files should be of type str or a list of strings.")
check_param_type(nreq_param_int, param_dict, int)
check_sampler_shuffle_shard_options(param_dict)
return method(*args, **kwargs)
return new_method