diff options
| -rw-r--r-- | changelog.d/5332.misc | 1 | ||||
| -rw-r--r-- | synapse/http/matrixfederationclient.py | 71 |
2 files changed, 56 insertions, 16 deletions
diff --git a/changelog.d/5332.misc b/changelog.d/5332.misc new file mode 100644 index 0000000000..dcfac4eac9 --- /dev/null +++ b/changelog.d/5332.misc @@ -0,0 +1 @@ +Improve docstrings on MatrixFederationClient. diff --git a/synapse/http/matrixfederationclient.py b/synapse/http/matrixfederationclient.py index 8197619a78..663ea72a7a 100644 --- a/synapse/http/matrixfederationclient.py +++ b/synapse/http/matrixfederationclient.py @@ -285,7 +285,24 @@ class MatrixFederationHttpClient(object): request (MatrixFederationRequest): details of request to be sent timeout (int|None): number of milliseconds to wait for the response headers - (including connecting to the server). 60s by default. + (including connecting to the server), *for each attempt*. + 60s by default. + + long_retries (bool): whether to use the long retry algorithm. + + The regular retry algorithm makes 4 attempts, with intervals + [0.5s, 1s, 2s]. + + The long retry algorithm makes 11 attempts, with intervals + [4s, 16s, 60s, 60s, ...] + + Both algorithms add -20%/+40% jitter to the retry intervals. + + Note that the above intervals are *in addition* to the time spent + waiting for the request to complete (up to `timeout` ms). + + NB: the long retry algorithm takes over 20 minutes to complete, with + a default timeout of 60s! ignore_backoff (bool): true to ignore the historical backoff data and try the request anyway. @@ -566,10 +583,14 @@ class MatrixFederationHttpClient(object): the request body. This will be encoded as JSON. json_data_callback (callable): A callable returning the dict to use as the request body. - long_retries (bool): A boolean that indicates whether we should - retry for a short or long time. - timeout(int): How long to try (in ms) the destination for before - giving up. None indicates no timeout. + + long_retries (bool): whether to use the long retry algorithm. See + docs on _send_request for details. + + timeout (int|None): number of milliseconds to wait for the response headers + (including connecting to the server), *for each attempt*. + self._default_timeout (60s) by default. + ignore_backoff (bool): true to ignore the historical backoff data and try the request anyway. backoff_on_404 (bool): True if we should count a 404 response as @@ -627,15 +648,22 @@ class MatrixFederationHttpClient(object): Args: destination (str): The remote server to send the HTTP request to. + path (str): The HTTP path. + data (dict): A dict containing the data that will be used as the request body. This will be encoded as JSON. - long_retries (bool): A boolean that indicates whether we should - retry for a short or long time. - timeout(int): How long to try (in ms) the destination for before - giving up. None indicates no timeout. + + long_retries (bool): whether to use the long retry algorithm. See + docs on _send_request for details. + + timeout (int|None): number of milliseconds to wait for the response headers + (including connecting to the server), *for each attempt*. + self._default_timeout (60s) by default. + ignore_backoff (bool): true to ignore the historical backoff data and try the request anyway. + args (dict): query params Returns: Deferred[dict|list]: Succeeds when we get a 2xx HTTP response. The @@ -686,14 +714,19 @@ class MatrixFederationHttpClient(object): Args: destination (str): The remote server to send the HTTP request to. + path (str): The HTTP path. + args (dict|None): A dictionary used to create query strings, defaults to None. - timeout (int): How long to try (in ms) the destination for before - giving up. None indicates no timeout and that the request will - be retried. + + timeout (int|None): number of milliseconds to wait for the response headers + (including connecting to the server), *for each attempt*. + self._default_timeout (60s) by default. + ignore_backoff (bool): true to ignore the historical backoff data and try the request anyway. + try_trailing_slash_on_400 (bool): True if on a 400 M_UNRECOGNIZED response we should try appending a trailing slash to the end of the request. Workaround for #3622 in Synapse <= v0.99.3. @@ -742,12 +775,18 @@ class MatrixFederationHttpClient(object): destination (str): The remote server to send the HTTP request to. path (str): The HTTP path. - long_retries (bool): A boolean that indicates whether we should - retry for a short or long time. - timeout(int): How long to try (in ms) the destination for before - giving up. None indicates no timeout. + + long_retries (bool): whether to use the long retry algorithm. See + docs on _send_request for details. + + timeout (int|None): number of milliseconds to wait for the response headers + (including connecting to the server), *for each attempt*. + self._default_timeout (60s) by default. + ignore_backoff (bool): true to ignore the historical backoff data and try the request anyway. + + args (dict): query params Returns: Deferred[dict|list]: Succeeds when we get a 2xx HTTP response. The result will be the decoded JSON body. |