Update and rename download_model.py to download_2model.py

scripts/download_model.py → scripts/download_2model.py

@@ -3,22 +3,25 @@
 import json
 import requests
 from tqdm import tqdm
+from concurrent.futures import ThreadPoolExecutor
 
 def download_file(url: str, filename: str, download_dir: str):
     """Download a file if it does not already exist."""
 
     try:
         filepath = os.path.join(download_dir, filename)
-        content_length = int(requests.head(url).headers.get("content-length", 0))
 
-        # If file already exists and size matches, skip download
-        if os.path.isfile(filepath) and os.path.getsize(filepath) == content_length:
-            print(f"{filepath} already exists. Skipping download.")
-            return
-        if os.path.isfile(filepath) and os.path.getsize(filepath) != content_length:
-            print(f"{filepath} already exists but size does not match. Redownloading.")
-        else:
-            print(f"Downloading {filename} from {url}")
+        # Check if the file already exists and its size matches the remote file
+        if os.path.isfile(filepath):
+            local_file_size = os.path.getsize(filepath)
+            remote_file_size = int(requests.head(url).headers.get("content-length", 0))
+            if local_file_size == remote_file_size:
+                print(f"{filepath} already exists. Skipping download.")
+                return
+            else:
+                print(f"{filepath} already exists, but its size does not match. Redownloading.")
+
+        print(f"Downloading {filename} from {url}")
 
         # Start download, stream=True allows for progress tracking
         response = requests.get(url, stream=True)
@@ -29,14 +32,14 @@ def download_file(url: str, filename: str, download_dir: str):
         # Create progress bar
         total_size = int(response.headers.get('content-length', 0))
         progress_bar = tqdm(
-            total=total_size, 
-            unit='iB', 
-            unit_scale=True, 
-            ncols=70, 
+            total=total_size,
+            unit='iB',
+            unit_scale=True,
+            ncols=70,
             file=sys.stdout
         )
 
-        # Write response content to file
+        # Write response content to file using a buffer
         with open(filepath, 'wb') as f:
             for data in response.iter_content(chunk_size=1024):
                 f.write(data)
@@ -50,13 +53,23 @@ def download_file(url: str, filename: str, download_dir: str):
             print("ERROR, something went wrong while downloading")
             raise Exception()
 
-
     except Exception as e:
         print(f"An error occurred: {e}")
 
+def download_files_parallel(config, download_dir, num_threads=4):
+    """Download files in parallel using ThreadPoolExecutor."""
+    with ThreadPoolExecutor(max_workers=num_threads) as executor:
+        futures = []
+
+        for url, filename in config.items():
+            futures.append(executor.submit(download_file, url, filename, download_dir))
+
+        for future in futures:
+            future.result()
+
 def main():
     """Main function to download files from URLs in a config file."""
-    
+
     # Get JSON config file path
     script_dir = os.path.dirname(os.path.realpath(__file__))
     config_file_path = os.path.join(script_dir, "download_models.json")
@@ -69,10 +82,8 @@ def main():
     with open(config_file_path, "r") as f:
         config = json.load(f)
 
-    # Download each file specified in config
-    for url, filename in config.items():
-        download_file(url, filename, download_dir)
-
+    # Download files in parallel
+    download_files_parallel(config, download_dir, num_threads=4)
 
 if __name__ == "__main__":
     main()