From 8c5b84441bdcc0f321ca9a58e8ec20cb35cdb456 Mon Sep 17 00:00:00 2001 From: Erik Johnston Date: Wed, 12 Sep 2018 16:22:14 +0100 Subject: [PATCH 1/2] Log outbound requests when we retry --- synapse/http/matrixfederationclient.py | 145 ++++++++++++------------- 1 file changed, 72 insertions(+), 73 deletions(-) diff --git a/synapse/http/matrixfederationclient.py b/synapse/http/matrixfederationclient.py index f9a1fbf95..cf920bc04 100644 --- a/synapse/http/matrixfederationclient.py +++ b/synapse/http/matrixfederationclient.py @@ -177,11 +177,6 @@ class MatrixFederationHttpClient(object): txn_id = "%s-O-%s" % (method, self._next_id) self._next_id = (self._next_id + 1) % (MAXINT - 1) - outbound_logger.info( - "{%s} [%s] Sending request: %s %s", - txn_id, destination, method, url - ) - # XXX: Would be much nicer to retry only at the transaction-layer # (once we have reliable transactions in place) if long_retries: @@ -194,85 +189,89 @@ class MatrixFederationHttpClient(object): ).decode('ascii') log_result = None - try: - while True: - try: - if json_callback: - json = json_callback() + while True: + try: + if json_callback: + json = json_callback() - if json: - data = encode_canonical_json(json) - headers_dict["Content-Type"] = ["application/json"] - self.sign_request( - destination, method, http_url, headers_dict, json - ) - else: - data = None - self.sign_request(destination, method, http_url, headers_dict) - - request_deferred = treq.request( - method, - url, - headers=Headers(headers_dict), - data=data, - agent=self.agent, - ) - add_timeout_to_deferred( - request_deferred, - timeout / 1000. if timeout else 60, - self.hs.get_reactor(), - cancelled_to_request_timed_out_error, - ) - response = yield make_deferred_yieldable( - request_deferred, + if json: + data = encode_canonical_json(json) + headers_dict["Content-Type"] = ["application/json"] + self.sign_request( + destination, method, http_url, headers_dict, json ) + else: + data = None + self.sign_request(destination, method, http_url, headers_dict) - log_result = "%d %s" % (response.code, response.phrase,) - break - except Exception as e: - if not retry_on_dns_fail and isinstance(e, DNSLookupError): - logger.warn( - "DNS Lookup failed to %s with %s", - destination, - e - ) - log_result = "DNS Lookup failed to %s with %s" % ( - destination, e - ) - raise + outbound_logger.info( + "{%s} [%s] Sending request: %s %s", + txn_id, destination, method, url + ) + request_deferred = treq.request( + method, + url, + headers=Headers(headers_dict), + data=data, + agent=self.agent, + ) + add_timeout_to_deferred( + request_deferred, + timeout / 1000. if timeout else 60, + self.hs.get_reactor(), + cancelled_to_request_timed_out_error, + ) + response = yield make_deferred_yieldable( + request_deferred, + ) + + log_result = "%d %s" % (response.code, response.phrase,) + break + except Exception as e: + if not retry_on_dns_fail and isinstance(e, DNSLookupError): logger.warn( - "{%s} Sending request failed to %s: %s %s: %s", - txn_id, + "DNS Lookup failed to %s with %s", destination, - method, - url, - _flatten_response_never_received(e), + e ) + log_result = "DNS Lookup failed to %s with %s" % ( + destination, e + ) + raise - log_result = _flatten_response_never_received(e) + logger.warn( + "{%s} Sending request failed to %s: %s %s: %s", + txn_id, + destination, + method, + url, + _flatten_response_never_received(e), + ) - if retries_left and not timeout: - if long_retries: - delay = 4 ** (MAX_LONG_RETRIES + 1 - retries_left) - delay = min(delay, 60) - delay *= random.uniform(0.8, 1.4) - else: - delay = 0.5 * 2 ** (MAX_SHORT_RETRIES - retries_left) - delay = min(delay, 2) - delay *= random.uniform(0.8, 1.4) + log_result = _flatten_response_never_received(e) - yield self.clock.sleep(delay) - retries_left -= 1 + if retries_left and not timeout: + if long_retries: + delay = 4 ** (MAX_LONG_RETRIES + 1 - retries_left) + delay = min(delay, 60) + delay *= random.uniform(0.8, 1.4) else: - raise - finally: - outbound_logger.info( - "{%s} [%s] Result: %s", - txn_id, - destination, - log_result, - ) + delay = 0.5 * 2 ** (MAX_SHORT_RETRIES - retries_left) + delay = min(delay, 2) + delay *= random.uniform(0.8, 1.4) + + yield self.clock.sleep(delay) + retries_left -= 1 + else: + raise + finally: + outbound_logger.info( + "{%s} [%s] Result: %s", + txn_id, + destination, + log_result, + ) if 200 <= response.code < 300: pass From 3db016b641bf9141c56d10376c7dcbc8108a6a9e Mon Sep 17 00:00:00 2001 From: Erik Johnston Date: Wed, 12 Sep 2018 16:25:18 +0100 Subject: [PATCH 2/2] Newsfile --- changelog.d/3853.misc | 1 + 1 file changed, 1 insertion(+) create mode 100644 changelog.d/3853.misc diff --git a/changelog.d/3853.misc b/changelog.d/3853.misc new file mode 100644 index 000000000..db45d4983 --- /dev/null +++ b/changelog.d/3853.misc @@ -0,0 +1 @@ +Log when we retry outbound requests