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https://github.com/element-hq/synapse
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Better handle 404 response for federation /send/
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parent
ab55794b6f
commit
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2 changed files with 14 additions and 2 deletions
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@ -319,6 +319,7 @@ class TransactionQueue(object):
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destination,
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self.clock,
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self.store,
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backoff_on_404=True, # If we get a 404 the other side has gone
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)
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device_message_edus, device_stream_id, dev_list_id = (
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@ -88,7 +88,7 @@ class RetryDestinationLimiter(object):
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def __init__(self, destination, clock, store, retry_interval,
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min_retry_interval=10 * 60 * 1000,
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max_retry_interval=24 * 60 * 60 * 1000,
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multiplier_retry_interval=5,):
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multiplier_retry_interval=5, backoff_on_404=False):
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"""Marks the destination as "down" if an exception is thrown in the
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context, except for CodeMessageException with code < 500.
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@ -107,6 +107,7 @@ class RetryDestinationLimiter(object):
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a failed request, in milliseconds.
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multiplier_retry_interval (int): The multiplier to use to increase
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the retry interval after a failed request.
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backoff_on_404 (bool): Back off if we get a 404
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"""
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self.clock = clock
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self.store = store
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@ -116,6 +117,7 @@ class RetryDestinationLimiter(object):
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self.min_retry_interval = min_retry_interval
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self.max_retry_interval = max_retry_interval
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self.multiplier_retry_interval = multiplier_retry_interval
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self.backoff_on_404 = backoff_on_404
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def __enter__(self):
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pass
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@ -123,7 +125,16 @@ class RetryDestinationLimiter(object):
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def __exit__(self, exc_type, exc_val, exc_tb):
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valid_err_code = False
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if exc_type is not None and issubclass(exc_type, CodeMessageException):
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valid_err_code = exc_val.code != 429 and 0 <= exc_val.code < 500
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if exc_val.code < 400:
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valid_err_code = True
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elif exc_val.code == 404 and self.backoff_on_404:
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valid_err_code = False
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elif exc_val.code == 429:
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valid_err_code = False
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elif exc_val.code < 500:
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valid_err_code = True
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else:
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valid_err_code = False
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if exc_type is None or valid_err_code:
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# We connected successfully.
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