refactor: apply SSL retry decorator to all tool modules

gmail/gmail_tools.py

@@ -18,7 +18,7 @@ from mcp import types
 from fastapi import Body
 
 from auth.service_decorator import require_google_service
-from core.utils import handle_http_errors
+from core.utils import handle_http_errors, retry_on_ssl_error
 from core.server import (
     GMAIL_READONLY_SCOPE,
     GMAIL_SEND_SCOPE,
@@ -31,28 +31,6 @@ from core.server import (
 logger = logging.getLogger(__name__)
 
 
-def retry_on_ssl_error(max_retries=3, base_delay=1):
-    """
-    A decorator to retry a function call on ssl.SSLError with exponential backoff.
-    """
-    def decorator(func):
-        @functools.wraps(func)
-        async def wrapper(*args, **kwargs):
-            for attempt in range(max_retries):
-                try:
-                    return await func(*args, **kwargs)
-                except ssl.SSLError as e:
-                    if attempt < max_retries - 1:
-                        delay = base_delay * (2 ** attempt)
-                        logger.warning(f"SSL error in {func.__name__} on attempt {attempt + 1}: {e}. Retrying in {delay} seconds...")
-                        await asyncio.sleep(delay)
-                    else:
-                        logger.error(f"SSL error in {func.__name__} on final attempt: {e}. Raising exception.")
-                        raise
-        return wrapper
-    return decorator
-
-
 def _extract_message_body(payload):
     """
     Helper function to extract plain text body from a Gmail message payload.