Add Progress bar to AlpineImporter

Signed-off-by: Harsh Mishra <hmisraji07@gmail.com>

Author: harsh098

vulnerabilities/importers/alpine_linux.py

@@ -17,6 +17,7 @@
 
 from bs4 import BeautifulSoup
 from packageurl import PackageURL
+from progress.bar import ChargingBar
 from univers.versions import AlpineLinuxVersion
 
 from vulnerabilities.importer import AdvisoryData
@@ -41,18 +42,26 @@ def advisory_data(self) -> Iterable[AdvisoryData]:
         page_response_content = fetch_response(BASE_URL).content
         advisory_directory_links = fetch_advisory_directory_links(page_response_content)
         advisory_links = []
-        for advisory_directory_link in advisory_directory_links:
-            advisory_directory_page = fetch_response(advisory_directory_link).content
-            advisory_links.extend(
-                fetch_advisory_links(advisory_directory_page, advisory_directory_link)
-            )
-        for link in advisory_links:
-            record = fetch_response(link).json()
-            if not record["packages"]:
-                LOGGER.error(f'"packages" not found in {link!r}')
-                continue
-            yield from process_record(record=record, url=link)
-
+        progress_for_package_fetch = ChargingBar("\tFetching Packages", max=len(advisory_directory_links))
+
+        try:
+            progress_for_package_fetch.start()
+            for advisory_directory_link in advisory_directory_links:
+                advisory_directory_page = fetch_response(advisory_directory_link).content
+                advisory_links.extend(
+                    fetch_advisory_links(advisory_directory_page, advisory_directory_link)
+                )
+            for link in advisory_links:
+                try:
+                    record = fetch_response(link).json()
+                    if not record["packages"]:
+                        LOGGER.error(f'"packages" not found in {link!r}')
+                        continue
+                    yield from process_record(record=record, url=link)
+                finally:
+                    progress_for_package_fetch.next()
+        finally:
+            progress_for_package_fetch.finish()
 
 def fetch_advisory_directory_links(page_response_content: str) -> List[str]:
     """