Handle vdb download exceptions. Disable non-depscan logging

Signed-off-by: Prabhu Subramanian <[email protected]>

depscan/cli.py

@@ -723,6 +723,8 @@ def run_depscan(args):
     if db_lib.needs_update(days=0, hours=VDB_AGE_HOURS, default_status=db_lib.get_db_file_metadata is not None):
         if ORAS_AVAILABLE:
             LOG.debug(f"Downloading the latest vulnerability database to {config.DATA_DIR}. Please wait ...")
+            # This line may exit with an exception if the database cannot be downloaded.
+            # Example: urllib3.exceptions.IncompleteRead, urllib3.exceptions.ProtocolError, requests.exceptions.ChunkedEncodingError
             download_image(vdb_database_url, config.DATA_DIR)
         else:
             LOG.warning("The latest vulnerability database is not found. Follow the documentation to manually download it.")

depscan/lib/logger.py

@@ -65,5 +65,5 @@ class CustomHighlighter(RegexHighlighter):
 DEBUG = logging.DEBUG
 
 for log_name, log_obj in logging.Logger.manager.loggerDict.items():
-    if log_name != __name__:
+    if not log_name.startswith("depscan"):
         log_obj.disabled = True