#!/usr/bin/env python
+import functools
+import inspect
+import pycurl
import time
from collections import deque
"queried loop results before any were recorded")
-def check_http_response_success(result):
- """Convert an httplib2 request result to a loop control flag.
+def check_http_response_success(status_code):
+ """Convert an HTTP status code to a loop control flag.
- Pass this method the 2-tuple returned by httplib2.Http.request. It
- returns True if the response indicates success, None if it indicates
- temporary failure, and False otherwise. You can use this as the
+ Pass this method a numeric HTTP status code. It returns True if
+ the code indicates success, None if it indicates temporary
+ failure, and False otherwise. You can use this as the
success_check for a RetryLoop.
Implementation details:
3xx status codes. They don't indicate success, and you can't
retry those requests verbatim.
"""
- try:
- status = int(result[0].status)
- except Exception:
- return None
- if status in _HTTP_SUCCESSES:
+ if status_code in _HTTP_SUCCESSES:
return True
- elif status in _HTTP_CAN_RETRY:
+ elif status_code in _HTTP_CAN_RETRY:
return None
- elif 100 <= status < 600:
+ elif 100 <= status_code < 600:
return False
else:
return None # Get well soon, server.
+
+def retry_method(orig_func):
+ """Provide a default value for a method's num_retries argument.
+
+ This is a decorator for instance and class methods that accept a
+ num_retries argument, with a None default. When the method is called
+ without a value for num_retries, it will be set from the underlying
+ instance or class' num_retries attribute.
+ """
+ @functools.wraps(orig_func)
+ def num_retries_setter(self, *args, **kwargs):
+ arg_vals = inspect.getcallargs(orig_func, self, *args, **kwargs)
+ if arg_vals['num_retries'] is None:
+ kwargs['num_retries'] = self.num_retries
+ return orig_func(self, *args, **kwargs)
+ return num_retries_setter
projects / arvados.git / blobdiff