File size: 2,029 Bytes
20d0351 5c28faf 20d0351 13b2261 20d0351 13b2261 5c28faf 20d0351 5c28faf 20d0351 7f7ff14 13b2261 5c28faf 20d0351 13b2261 20d0351 5c28faf 13b2261 20d0351 5c28faf 20d0351 13b2261 20d0351 |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 |
import os
import sys
import utils
import argparse
import tarfile
from constants import *
import concurrent.futures
def compress_chunk(chunk, chunk_index, output_dir):
with tarfile.open(os.path.join(output_dir, f"chunk_{chunk_index}.tar"), "w") as tar:
for image_path, metadata_path in chunk:
tar.add(image_path, arcname=os.path.basename(image_path))
tar.add(metadata_path, arcname=os.path.basename(metadata_path))
def parse_args():
parser = argparse.ArgumentParser(description="Group images into uncompressed tar files.")
parser.add_argument("-i", "--input-dir", default=IMAGE_DIR, help="Input directory for the images to chunk into tars")
parser.add_argument("-o", "--output-dir", default=COMPRESSED_DIR, help="Output directory for chunked tars")
parser.add_argument("-n", "--num-images-per-chunk", type=int, default=sys.maxsize, help="Number of images per chunk, default to infinite")
args = parser.parse_args()
if args.num_images_per_chunk < 1:
print("Number of images per chunk needs to be a positive integer!")
sys.exit(1)
return args
def main():
args = parse_args()
image_metadata_path_tuple_list = [e[1] for e in sorted(utils.get_image_id_image_metadata_path_tuple_dict(args.input_dir).items(), key=lambda x: x[0])]
os.makedirs(args.output_dir, exist_ok=True)
with concurrent.futures.ThreadPoolExecutor(max_workers=os.cpu_count()) as executor:
futures = []
for i in range(0, len(image_metadata_path_tuple_list), args.num_images_per_chunk):
chunk = image_metadata_path_tuple_list[i:i + args.num_images_per_chunk]
chunk_index = i // args.num_images_per_chunk
future = executor.submit(compress_chunk, chunk, chunk_index, args.output_dir)
futures.append(future)
concurrent.futures.wait(futures)
if __name__ == "__main__":
try:
main()
except KeyboardInterrupt:
print("\nScript interrupted by user, exiting...")
sys.exit(1)
|