class Preprocess1Container:
def __init__(self):
self._init_execution()
self._init_preprocessing()
self._init_data()
self.logger = get_logger(__file__)
random.seed(self.random_seed)
self._setup_data_manager()
self._setup_vocab_builder()
self._setup_preprocessor()
self._setup_data_loader()
self._store_config()
# =========================================================================
# Parameter initializations
# =========================================================================
@ex.capture(prefix='execution')
def _init_execution(self, num_processes, batch_size, save_every,
random_seed):
self.num_processes = num_processes
self.batch_size = batch_size
self.save_every = save_every
self.random_seed = random_seed
@ex.capture(prefix='preprocessing')
def _init_preprocessing(self, hard_num_tokens_limit, allow_empty_methods,
use_tokens_limiter, separate_label_vocabulary):
self.hard_num_tokens_limit = hard_num_tokens_limit
self.allow_empty_methods = allow_empty_methods
self.use_tokens_limiter = use_tokens_limiter
self.separate_label_vocabulary = separate_label_vocabulary
@ex.capture(prefix='data')
def _init_data(self, language, partition):
self.partition = partition
if language in {'java-small', 'java-medium', 'java-large'}:
self.dataset_name = language
self.language = "java"
self.dataset_type = "code2seq"
else:
self.dataset_name = language
self.dataset_type = "code-search-net"
self.language = language
if self.dataset_type == 'code2seq':
self.input_data_path = CODE2SEQ_EXTRACTED_METHODS_DATA_PATH
else:
self.input_data_path = CSN_RAW_DATA_PATH
@ex.capture
def _store_config(self, _config):
self.data_manager.save_config(_config)
# =========================================================================
# Setup Helper methods
# =========================================================================
def _setup_data_manager(self):
self.data_manager = CTBufferedDataManager(DATA_PATH_STAGE_1,
self.dataset_name,
self.partition)
def _setup_vocab_builder(self):
if self.partition == 'train':
word_counter = WordCounter()
token_type_counter = WordCounter()
node_type_counter = WordCounter()
if self.separate_label_vocabulary:
word_counter_labels = WordCounter()
self.word_counters = (word_counter, token_type_counter,
node_type_counter, word_counter_labels)
self.vocab_builder = CodeSummarizationVocabularyBuilder(
*self.word_counters)
else:
self.word_counters = (word_counter, token_type_counter,
node_type_counter)
self.vocab_builder = VocabularyBuilder(*self.word_counters)
def _setup_preprocessor(self):
self.preprocessor = CTStage1Preprocessor(
self.language,
allow_empty_methods=self.allow_empty_methods,
use_tokens_limiter=self.use_tokens_limiter,
max_num_tokens=self.hard_num_tokens_limit)
def _setup_data_loader(self):
self.logger.info(
f"loading dataset {self.dataset_name} for {self.language}...")
if self.dataset_type == 'code2seq':
self.dataloader = C2SRawDataLoader(self.input_data_path)
self.dataloader.load_dataset(self.dataset_name,
partition=self.partition)
else:
self.dataloader = CSNRawDataLoader(self.input_data_path)
self.dataloader.load_all_for(self.language,
partition=self.partition)
self.n_raw_samples = len(self.dataloader)
self.logger.info(f"Loaded {self.n_raw_samples} snippets")
# =========================================================================
# Processing Helper Methods
# =========================================================================
@staticmethod
def _process_batch(preprocessor, x):
i, batch = x
try:
return preprocessor.process(batch, i)
except PreprocessingException as e:
# Cannot use logger in parallel worker, as loggers cannot be pickled
print(str(e))
# This is an expected exception, thus we just return an empty list, such that preprocessing can go on
return []
except Exception as e:
print(f"Error processing batch {i}:")
func_names, docstrings, code_snippets = zip(*batch)
print(str(e))
for snippet in code_snippets:
print(snippet)
traceback.print_exc()
return []
def _save_dataset(self, dataset):
# Building vocabulary before saving. Ensures that it is run in main process => no race conditions when updating
# vocabulary
if self.partition == 'train':
for sample in dataset:
self.vocab_builder(sample)
dataset = [sample.compress() for sample in dataset]
if dataset:
self.logger.info(
f"saving dataset batch with {len(dataset)} samples ...")
self.data_manager.save(dataset)
def _handle_shutdown(self, sig=None, frame=None):
self.data_manager.shutdown()
sys.exit(0)
# =========================================================================
# Main method
# =========================================================================
def run(self):
os.umask(0o007)
# Ensure graceful shutdown when preprocessing is interrupted
signal.signal(signal.SIGINT, self._handle_shutdown)
n_processed_samples = 0
with parallel_backend("loky") as parallel_config:
execute_parallel = Parallel(self.num_processes, verbose=0)
batched_samples_generator = enumerate(
self.dataloader.read(self.batch_size, shuffle=True))
while True:
self.logger.info("start processing batch ...")
dataset_slice = itertools.islice(
batched_samples_generator,
int(self.save_every / self.batch_size))
with Timing() as t:
dataset = execute_parallel(
delayed(self._process_batch)(self.preprocessor, batch)
for batch in dataset_slice)
if dataset:
dataset = [
sample for batch in dataset for sample in batch
] # List[batches] -> List[samples]
self.logger.info(
f"processing {len(dataset)} samples took {t[0]:0.2f} seconds ({t[0] / len(dataset):0.3f} seconds per "
f"sample)")
self._save_dataset(dataset)
n_processed_samples += len(dataset)
else:
break
if self.partition == 'train':
self.data_manager.save_word_counters(*self.word_counters)
self.logger.info("PREPROCESS-1 DONE!")
self.logger.info(
f"Successfully processed {n_processed_samples}/{self.n_raw_samples} samples ({n_processed_samples / self.n_raw_samples:0.2%})"
)
self._handle_shutdown()
class Preprocess2Container:
def __init__(self):
self._init_execution()
self._init_preprocessing()
self._init_distances()
self._init_binning()
self._init_data()
self.logger = get_logger(__file__)
self._setup_data_managers()
self._setup_vocabularies()
self._setup_vocabulary_transformer()
self._setup_distances_transformer()
self._store_config()
@ex.capture(prefix="execution")
def _init_execution(self, num_processes, batch_size, dataset_slice_size):
self.num_processes = num_processes
self.batch_size = batch_size
self.dataset_slice_size = dataset_slice_size
@ex.capture(prefix="preprocessing")
def _init_preprocessing(self, remove_punctuation, max_num_tokens,
vocab_size, min_vocabulary_frequency,
separate_label_vocabulary, vocab_size_labels,
min_vocabulary_frequency_labels):
self.remove_punctuation = remove_punctuation
self.max_num_tokens = max_num_tokens
self.vocab_size = vocab_size
self.min_vocabulary_frequency = min_vocabulary_frequency
self.separate_label_vocabulary = separate_label_vocabulary
self.vocab_size_labels = vocab_size_labels
self.min_vocabulary_frequency_labels = min_vocabulary_frequency_labels
@ex.capture(prefix="distances")
def _init_distances(self, ppr_alpha, ppr_use_log, ppr_threshold,
sp_threshold, ancestor_sp_forward,
ancestor_sp_backward,
ancestor_sp_negative_reverse_dists,
ancestor_sp_threshold, sibling_sp_forward,
sibling_sp_backward, sibling_sp_negative_reverse_dists,
sibling_sp_threshold):
self.ppr_alpha = ppr_alpha
self.ppr_use_log = ppr_use_log
self.ppr_threshold = ppr_threshold
self.sp_threshold = sp_threshold
self.ancestor_sp_forward = ancestor_sp_forward
self.ancestor_sp_backward = ancestor_sp_backward
self.ancestor_sp_negative_reverse_dists = ancestor_sp_negative_reverse_dists
self.ancestor_sp_threshold = ancestor_sp_threshold
self.sibling_sp_forward = sibling_sp_forward
self.sibling_sp_backward = sibling_sp_backward
self.sibling_sp_negative_reverse_dists = sibling_sp_negative_reverse_dists
self.sibling_sp_threshold = sibling_sp_threshold
@ex.capture(prefix='data')
def _init_data(self, language, partition):
self.language = language
self.partition = partition
self.use_multi_language = ',' in self.language
if self.use_multi_language:
self.languages = self.language.split(',')
self.input_path = DATA_PATH_STAGE_1
self.output_path = DATA_PATH_STAGE_2
@ex.capture(prefix="binning")
def _init_binning(self, num_bins, n_fixed_bins, exponential_binning,
exponential_binning_growth_factor, bin_padding):
self.num_bins = num_bins
self.n_fixed_bins = n_fixed_bins
self.exponential_binning = exponential_binning
self.exponential_binning_growth_factor = exponential_binning_growth_factor
self.bin_padding = bin_padding
@ex.capture
def _store_config(self, _config):
config = deepcopy(_config)
config['preprocessing']['special_symbols'] = SPECIAL_SYMBOLS
config['preprocessing'][
'special_symbols_node_token_types'] = SPECIAL_SYMBOLS_NODE_TOKEN_TYPES
self.output_data_manager.save_config(config)
# =========================================================================
# Setup Helper Methods
# =========================================================================
def _setup_data_managers(self):
if self.use_multi_language:
self.input_data_managers = [
CTBufferedDataManager(self.input_path, l, self.partition)
for l in self.languages
]
word_counters = zip(*[
input_data_manager.load_word_counters()
for input_data_manager in self.input_data_managers
])
word_counters = [
self._combine_counters(
word_counter, self.min_vocabulary_frequency) if i < 3 or
not self.separate_label_vocabulary else self._combine_counters(
word_counter, self.min_vocabulary_frequency_labels)
for i, word_counter in enumerate(word_counters)
]
self.input_data_manager = CombinedDataManager(
self.input_data_managers, self.languages)
else:
self.input_data_manager = CTBufferedDataManager(
self.input_path, self.language, self.partition)
word_counters = self.input_data_manager.load_word_counters()
if self.separate_label_vocabulary:
self.word_counter, self.token_type_counter, self.node_type_counter, self.word_counter_labels = word_counters
else:
self.word_counter, self.token_type_counter, self.node_type_counter = word_counters
self.output_data_manager = CTBufferedDataManager(
self.output_path, self.language, self.partition)
def _setup_vocabularies(self):
if self.partition == "train":
# Only build vocabularies on train data
self.word_vocab = self.word_counter.to_vocabulary(
limit_most_common=self.vocab_size,
min_frequency=self.min_vocabulary_frequency,
special_symbols=SPECIAL_SYMBOLS)
self.token_type_vocab = self.token_type_counter.to_vocabulary(
special_symbols=SPECIAL_SYMBOLS_NODE_TOKEN_TYPES)
self.node_type_vocab = self.node_type_counter.to_vocabulary(
special_symbols=SPECIAL_SYMBOLS_NODE_TOKEN_TYPES)
if self.separate_label_vocabulary:
self.word_vocab_labels = self.word_counter_labels.to_vocabulary(
limit_most_common=self.vocab_size_labels,
min_frequency=self.min_vocabulary_frequency_labels,
special_symbols=SPECIAL_SYMBOLS)
else:
# On valid and test set, use already built vocabulary from train run
if self.separate_label_vocabulary:
self.word_vocab, self.token_type_vocab, self.node_type_vocab, self.word_vocab_labels = self.output_data_manager.load_vocabularies(
)
else:
self.word_vocab, self.token_type_vocab, self.node_type_vocab = self.output_data_manager.load_vocabularies(
)
def _setup_vocabulary_transformer(self):
if self.separate_label_vocabulary:
self.vocabulary_transformer = CodeSummarizationVocabularyTransformer(
self.word_vocab, self.token_type_vocab, self.node_type_vocab,
self.word_vocab_labels)
else:
self.vocabulary_transformer = VocabularyTransformer(
self.word_vocab, self.token_type_vocab, self.node_type_vocab)
def _setup_distances_transformer(self):
distance_metrics = [
PersonalizedPageRank(threshold=self.ppr_threshold,
log=self.ppr_use_log,
alpha=self.ppr_alpha),
ShortestPaths(threshold=self.sp_threshold),
AncestorShortestPaths(
forward=self.ancestor_sp_forward,
backward=self.ancestor_sp_backward,
negative_reverse_dists=self.ancestor_sp_negative_reverse_dists,
threshold=self.ancestor_sp_threshold),
SiblingShortestPaths(
forward=self.sibling_sp_forward,
backward=self.sibling_sp_backward,
negative_reverse_dists=self.sibling_sp_negative_reverse_dists,
threshold=self.sibling_sp_threshold)
]
if self.exponential_binning:
db = DistanceBinning(
self.num_bins, self.n_fixed_bins,
ExponentialBinning(self.exponential_binning_growth_factor))
else:
db = DistanceBinning(self.num_bins, self.n_fixed_bins)
self.distances_transformer = DistancesTransformer(distance_metrics, db)
def _combine_counters(self, counters, min_vocab_frequency):
"""
If multiple languages are used, we need to combine the word counts for all of them.
Additionally, if MIN_VOCABULARY_FREQUENCY is set, we only allow a token if if passed the
threshold in ANY of the languages
"""
combined_counter = WordCounter()
# Dataframe with token x language -> count
df = pd.DataFrame.from_dict({
language: counter.words
for language, counter in zip(self.languages, counters)
})
df = df.fillna(0)
if min_vocab_frequency is not None:
idx_frequent_words = (df > min_vocab_frequency).any(axis=1)
df = df[idx_frequent_words]
df = df.sum(axis=1)
combined_counter.words = df.to_dict()
return combined_counter
@staticmethod
def _process_batch(x, vocabulary_transformer, distances_transformer,
use_multi_language, max_num_tokens, remove_punctuation):
i, batch = x
try:
output = []
for sample in batch:
if use_multi_language:
sample_language, sample = sample
assert len(sample) == 6, f"Unexpected sample format! {sample}"
sample = CTStage1Sample.from_compressed(sample)
if max_num_tokens is not None and len(
sample.tokens) > max_num_tokens:
print(
f"Snippet with {len(sample.tokens)} tokens exceeds limit of {max_num_tokens}! Skipping"
)
continue
if remove_punctuation:
sample.remove_punctuation()
sample = vocabulary_transformer(sample)
sample = distances_transformer(sample)
if use_multi_language:
sample = CTStage2MultiLanguageSample(
sample.tokens,
sample.graph_sample,
sample.token_mapping,
sample.stripped_code_snippet,
sample.func_name,
sample.docstring,
sample_language,
encoded_func_name=sample.encoded_func_name if hasattr(
sample, 'encoded_func_name') else None)
output.append(sample)
return output
except Exception as e:
# Cannot use logger in parallel worker, as loggers cannot be pickled
print(str(e))
traceback.print_exc()
return []
def _handle_shutdown(self, sig=None, frame=None):
if self.use_multi_language:
for idm in self.input_data_managers:
idm.shutdown()
else:
self.input_data_manager.shutdown()
self.output_data_manager.shutdown()
sys.exit(0)
def run(self):
# -----------------------------------------------------------------------------
# Multiprocessing Loop
# -----------------------------------------------------------------------------
self.logger.info("Start processing...")
# Ensure graceful shutdown when preprocessing is interrupted
signal.signal(signal.SIGINT, self._handle_shutdown)
n_samples_after = 0
with parallel_backend("loky") as parallel_config:
execute_parallel = Parallel(self.num_processes, verbose=0)
batched_samples_generator = enumerate(
self.input_data_manager.read(self.batch_size))
while True:
dataset_slice = itertools.islice(
batched_samples_generator,
int(self.dataset_slice_size / self.batch_size))
with Timing() as t:
dataset = execute_parallel(
delayed(self._process_batch)
(batch, self.vocabulary_transformer,
self.distances_transformer, self.use_multi_language,
self.max_num_tokens, self.remove_punctuation)
for batch in dataset_slice)
if dataset:
dataset = [sample for batch in dataset for sample in batch]
n_samples_after += len(dataset)
self.logger.info(
f"processing {len(dataset)} samples took {t[0]:0.2f} seconds ({t[0] / len(dataset):0.3f} seconds "
f"per sample)")
self.output_data_manager.save(dataset)
else:
break
self.logger.info("Saving vocabulary")
if self.separate_label_vocabulary:
self.output_data_manager.save_vocabularies(self.word_vocab,
self.token_type_vocab,
self.node_type_vocab,
self.word_vocab_labels)
else:
self.output_data_manager.save_vocabularies(self.word_vocab,
self.token_type_vocab,
self.node_type_vocab)
self.logger.info("PREPROCESS-2 DONE!")
self.logger.info(f"Successfully processed {n_samples_after} samples")
self._handle_shutdown()