Update reset_indexes.py (#2921)

Error Handling: Add more specific error handling to make it easier to debug issues.
Configuration Management: Use environment variables or a configuration file for settings like DOCUMENT_INDEX_NAME and DOCUMENT_ID_ENDPOINT.
Logging: Improve logging to include more details about the operations.
Retry Mechanism: Add a retry mechanism for network requests to handle transient errors.
Testing: Add unit tests for the functions to ensure they work as expected

Co-authored-by: YASH <[email protected]>

backend/scripts/reset_indexes.py

@@ -1,8 +1,10 @@
 # This file is purely for development use, not included in any builds
 import os
 import sys
+from time import sleep
 
 import requests
+from requests.exceptions import RequestException
 
 # makes it so `PYTHONPATH=.` is not required when running this script
 parent_dir = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
@@ -15,22 +17,58 @@
 logger = setup_logger()
 
 
-def wipe_vespa_index() -> None:
+def wipe_vespa_index() -> bool:
+    """
+    Wipes the Vespa index by deleting all documents.
+    """
     continuation = None
     should_continue = True
+    RETRIES = 3
+
     while should_continue:
         params = {"selection": "true", "cluster": DOCUMENT_INDEX_NAME}
         if continuation:
-            params = {**params, "continuation": continuation}
-        response = requests.delete(DOCUMENT_ID_ENDPOINT, params=params)
-        response.raise_for_status()
+            params["continuation"] = continuation
+
+        for attempt in range(RETRIES):
+            try:
+                response = requests.delete(DOCUMENT_ID_ENDPOINT, params=params)
+                response.raise_for_status()
+
+                response_json = response.json()
+                logger.info(f"Response: {response_json}")
+
+                continuation = response_json.get("continuation")
+                should_continue = bool(continuation)
+                break  # Exit the retry loop if the request is successful
+
+            except RequestException:
+                logger.exception("Request failed")
+                sleep(2**attempt)  # Exponential backoff
+        else:
+            logger.error(f"Max retries ({RETRIES}) exceeded. Exiting.")
+            return False
+
+    return True
+
+
+def main() -> int:
+    """
+    Main function to execute the script.
+    """
+    try:
+        succeeded = wipe_vespa_index()
+    except Exception:
+        logger.exception("wipe_vespa_index exceptioned.")
+        return 1
 
-        response_json = response.json()
-        print(response_json)
+    if not succeeded:
+        logger.info("Vespa index wipe failed.")
+        return 0
 
-        continuation = response_json.get("continuation")
-        should_continue = bool(continuation)
+    logger.info("Vespa index wiped successfully.")
+    return 1
 
 
 if __name__ == "__main__":
-    wipe_vespa_index()
+    sys.exit(main())