Update warc_wat_url_processor.py

warc_wat_url_processor.py

@@ -1,9 +1,9 @@
-import subprocess
 import os
 import gzip
 import re
 import traceback
-from multiprocessing import Pool
+from concurrent.futures import ProcessPoolExecutor, as_completed, wait
+import subprocess
 
 def extract_urls_from_file(file_path):
     urls = []
@@ -23,6 +23,7 @@ def extract_urls_from_file(file_path):
     return urls
 
 def process_file(file_path):
+    try:
         print(f"Processing file: {file_path}")
 
         # Extract URLs from the gzipped file
@@ -40,7 +41,11 @@ def process_file(file_path):
         # Use zstd command-line tool for compression
         compressed_file_path = f'{output_file_path}.zst'
         command_compress = f'zstd -T0 -12 --long {output_file_path} -o {compressed_file_path}'
-    subprocess.run(command_compress, shell=True)
+
+        # Run the compression command synchronously and wait for it to complete
+        compression_process = subprocess.Popen(command_compress, shell=True)
+        compression_process.communicate()
+
         print(f"Compressed file saved as '{compressed_file_path}'")
 
         # Remove the original gzipped file
@@ -62,30 +67,33 @@ def process_file(file_path):
         else:
             print(f"Failed to remove {filename} from urls_to_download.txt")
 
-def extract_urls_from_directory(directory_path):
-    file_list = sorted(os.listdir(directory_path))
-    pool = Pool(processes=7)
-    pool.map(process_file, [os.path.join(directory_path, filename) for filename in file_list if filename.endswith('.warc.gz')])
-    pool.close()
-    pool.join()
+    except Exception as e:
+        print(f"Error during processing {file_path}: {e}")
+        traceback.print_exc()
 
-with open('urls_to_download.txt', 'r') as file:
+def download_and_process_file(url):
+    try:
+        command = f'axel -n 4 {url}'
+        subprocess.run(command, shell=True)
+        file_path = os.path.join(os.getcwd(), os.path.basename(url))
+        process_file(file_path)
+    except Exception as e:
+        print(f"Error during download and processing {url}: {e}")
+
+def main():
+    with open('urls_to_download.txt', 'r') as file:
         urls = file.readlines()
 
-urls = [url.strip() for url in urls]
+    urls = [url.strip() for url in urls]
 
-batch_size = 48
-concurrency_level = 4
-batches = [urls[i:i+batch_size] for i in range(0, len(urls), batch_size)]
+    download_concurrency_level = 4
 
-for batch in batches:
-    pool = Pool(processes=concurrency_level)
+    # Start downloading and processing files in parallel
+    with ProcessPoolExecutor(max_workers=download_concurrency_level) as executor:
+        futures = [executor.submit(download_and_process_file, url) for url in urls]
 
-    for url in batch:
-        command = f'axel -n 4 {url}'
-        pool.apply_async(subprocess.run, args=(command,), kwds={'shell': True})
+        # Wait for all downloads and processing to complete before starting the next iteration
+        wait(futures)
 
-    pool.close()
-    pool.join()
-
-extract_urls_from_directory(os.getcwd())
+if __name__ == "__main__":
+    main()