|
import io
|
|
import argparse
|
|
import concurrent.futures
|
|
import json
|
|
import os
|
|
import time
|
|
import urllib.error
|
|
import urllib.request
|
|
|
|
from tqdm import tqdm
|
|
|
|
parser = argparse.ArgumentParser()
|
|
parser.add_argument("--output_folder", type=str, default="V3Det")
|
|
parser.add_argument("--max_retries", type=int, default=3)
|
|
parser.add_argument("--max_workers", type=int, default=16)
|
|
args = parser.parse_args()
|
|
headers = {'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.0.0 Safari/537.36'}
|
|
|
|
|
|
def cache(response):
|
|
f = io.BytesIO()
|
|
block_sz = 8192
|
|
while True:
|
|
buffer = response.read(block_sz)
|
|
if not buffer:
|
|
break
|
|
f.write(buffer)
|
|
return f
|
|
|
|
def download_image(url, path, timeout):
|
|
result = {
|
|
"status": "",
|
|
"url": url,
|
|
"path": path,
|
|
}
|
|
cnt = 0
|
|
while True:
|
|
try:
|
|
response = urllib.request.urlopen(urllib.request.Request(url=url, headers=headers), timeout=timeout)
|
|
image_path = os.path.join(args.output_folder, path)
|
|
os.makedirs(os.path.dirname(image_path), exist_ok=True)
|
|
f = cache(response)
|
|
with open(image_path, "wb") as fp:
|
|
fp.write(f.getvalue())
|
|
result["status"] = "success"
|
|
except Exception as e:
|
|
if not isinstance(e, urllib.error.HTTPError):
|
|
cnt += 1
|
|
if cnt <= args.max_retries:
|
|
continue
|
|
if isinstance(e, urllib.error.HTTPError):
|
|
result["status"] = "expired"
|
|
else:
|
|
result["status"] = "timeout"
|
|
break
|
|
return result
|
|
|
|
|
|
def main():
|
|
start = time.time()
|
|
if os.path.exists(args.output_folder) and os.listdir(args.output_folder):
|
|
try:
|
|
c = input(
|
|
f"'{args.output_folder}' already exists and is not an empty directory, continue? (y/n) "
|
|
)
|
|
if c.lower() not in ["y", "yes"]:
|
|
exit(0)
|
|
except KeyboardInterrupt:
|
|
exit(0)
|
|
if not os.path.exists(args.output_folder):
|
|
os.makedirs(args.output_folder)
|
|
image_folder_path = os.path.join(args.output_folder, "images")
|
|
record_path = os.path.join(args.output_folder, "records.json")
|
|
record = {'success': [], 'expired': [], 'timeout': []}
|
|
if os.path.isfile(record_path):
|
|
try:
|
|
with open(record_path, encoding="utf8") as f:
|
|
record['success'] = json.load(f)['success']
|
|
except:
|
|
pass
|
|
if not os.path.exists(image_folder_path):
|
|
os.makedirs(image_folder_path)
|
|
|
|
list_url = 'https://raw.githubusercontent.com/V3Det/v3det_resource/main/resource/download_list.txt'
|
|
response = urllib.request.urlopen(urllib.request.Request(url=list_url, headers=headers), timeout=10)
|
|
url_list = [url for url in response.read().decode('utf-8').split('\n') if len(url) > 0]
|
|
image2url = {}
|
|
for url in url_list:
|
|
response = urllib.request.urlopen(urllib.request.Request(url=url, headers=headers), timeout=10)
|
|
image2url.update(eval(response.read().decode('utf-8')))
|
|
|
|
data = []
|
|
rec_suc = set(record['success'])
|
|
for image, url in image2url.items():
|
|
if image not in rec_suc:
|
|
data.append((url, image))
|
|
with tqdm(total=len(data)) as pbar:
|
|
with concurrent.futures.ThreadPoolExecutor(max_workers=args.max_workers) as executor:
|
|
|
|
chunk_size = min(5000, args.max_workers * 500)
|
|
for i in range(0, len(data), chunk_size):
|
|
futures = [
|
|
executor.submit(download_image, url, path, 10)
|
|
for url, path in data[i: i + chunk_size]
|
|
]
|
|
for future in concurrent.futures.as_completed(futures):
|
|
r = future.result()
|
|
record[r["status"]].append(r["path"])
|
|
pbar.update(1)
|
|
with open(record_path, "w", encoding="utf8") as f:
|
|
json.dump(record, f, indent=2)
|
|
|
|
end = time.time()
|
|
print(f"consuming time {end - start:.1f} sec")
|
|
print(f"{len(record['success'])} images downloaded.")
|
|
print(f"{len(record['timeout'])} urls failed due to request timeout.")
|
|
print(f"{len(record['expired'])} urls failed due to url expiration.")
|
|
if len(record['success']) == len(image2url):
|
|
os.remove(record_path)
|
|
print('All images have been downloaded!')
|
|
else:
|
|
print('Please run this file again to download failed image!')
|
|
|
|
|
|
if __name__ == "__main__":
|
|
main()
|
|
|
