Added new pattern to export asset_id regex for different url pattern (#…

…2343)

* Added new pattern to export asset_id regex for different url pattern

* Changed exception type to be more appropriate

exporter/views.py

@@ -68,18 +68,23 @@ def get_original_asset_id(download_url):
     """
     download_url = download_url.replace("https", "http")
     if download_url.startswith("http://tile.loc.gov/"):
-        pattern = r"/service:([A-Za-z0-9:.\-\_]+)/|/master/([A-Za-z0-9/]+)([0-9.]+)"
+        pattern = (
+            r"/service:([A-Za-z0-9:.\-\_]+)/"
+            + r"|/master/([A-Za-z0-9/]+)([0-9.]+)"
+            + r"|/public:music:([A-Za-z0-9:.\-\_]+)/"
+        )
         asset_id = re.search(pattern, download_url)
         if not asset_id:
             logger.error(
                 "Couldn't find a matching asset ID in download URL %s", download_url
             )
-            raise AssertionError
+            raise ValueError(
+                f"Couldn't find a matching asset ID in download URL {download_url}"
+            )
         else:
-            if asset_id.group(1):
-                matching_asset_id = asset_id.group(1)
-            else:
-                matching_asset_id = asset_id.group(2)
+            for matching_asset_id in asset_id.groups():
+                if matching_asset_id:
+                    break
             logger.debug(
                 "Found asset ID %s in download URL %s", matching_asset_id, download_url
             )