Various cleanups in the federation client code (#4031)

- Improve logging: log things in the right order, include destination and txids
  in all log lines, don't log successful responses twice

- Fix the docstring on TransportLayerClient.send_transaction

- Don't use treq.request, which is overcomplicated for our purposes: just use a
  twisted.web.client.Agent.

- simplify the logic for setting up the bodyProducer

- fix bytes/str confusions
This commit is contained in:
Richard van der Hoff 2018-10-16 10:44:49 +01:00 committed by GitHub
parent 03c11032c3
commit b8a5b0097c
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4 changed files with 64 additions and 61 deletions

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@ -195,7 +195,7 @@ class MatrixFederationHttpClient(object):
)
self.clock = hs.get_clock()
self._store = hs.get_datastore()
self.version_string = hs.version_string.encode('ascii')
self.version_string_bytes = hs.version_string.encode('ascii')
self.default_timeout = 60
def schedule(x):
@ -261,8 +261,8 @@ class MatrixFederationHttpClient(object):
ignore_backoff=ignore_backoff,
)
method = request.method
destination = request.destination
method_bytes = request.method.encode("ascii")
destination_bytes = request.destination.encode("ascii")
path_bytes = request.path.encode("ascii")
if request.query:
query_bytes = encode_query_args(request.query)
@ -270,8 +270,8 @@ class MatrixFederationHttpClient(object):
query_bytes = b""
headers_dict = {
"User-Agent": [self.version_string],
"Host": [request.destination],
b"User-Agent": [self.version_string_bytes],
b"Host": [destination_bytes],
}
with limiter:
@ -282,50 +282,51 @@ class MatrixFederationHttpClient(object):
else:
retries_left = MAX_SHORT_RETRIES
url = urllib.parse.urlunparse((
b"matrix", destination.encode("ascii"),
url_bytes = urllib.parse.urlunparse((
b"matrix", destination_bytes,
path_bytes, None, query_bytes, b"",
)).decode('ascii')
))
url_str = url_bytes.decode('ascii')
http_url = urllib.parse.urlunparse((
url_to_sign_bytes = urllib.parse.urlunparse((
b"", b"",
path_bytes, None, query_bytes, b"",
)).decode('ascii')
))
while True:
try:
json = request.get_json()
if json:
data = encode_canonical_json(json)
headers_dict["Content-Type"] = ["application/json"]
headers_dict[b"Content-Type"] = [b"application/json"]
self.sign_request(
destination, method, http_url, headers_dict, json
destination_bytes, method_bytes, url_to_sign_bytes,
headers_dict, json,
)
else:
data = None
self.sign_request(destination, method, http_url, headers_dict)
logger.info(
"{%s} [%s] Sending request: %s %s",
request.txn_id, destination, method, url
)
if data:
data = encode_canonical_json(json)
producer = FileBodyProducer(
BytesIO(data),
cooperator=self._cooperator
cooperator=self._cooperator,
)
else:
producer = None
self.sign_request(
destination_bytes, method_bytes, url_to_sign_bytes,
headers_dict,
)
request_deferred = treq.request(
method,
url,
logger.info(
"{%s} [%s] Sending request: %s %s",
request.txn_id, request.destination, request.method,
url_str,
)
# we don't want all the fancy cookie and redirect handling that
# treq.request gives: just use the raw Agent.
request_deferred = self.agent.request(
method_bytes,
url_bytes,
headers=Headers(headers_dict),
data=producer,
agent=self.agent,
reactor=self.hs.get_reactor(),
unbuffered=True
bodyProducer=producer,
)
request_deferred = timeout_deferred(
@ -344,9 +345,9 @@ class MatrixFederationHttpClient(object):
logger.warn(
"{%s} [%s] Request failed: %s %s: %s",
request.txn_id,
destination,
method,
url,
request.destination,
request.method,
url_str,
_flatten_response_never_received(e),
)
@ -366,7 +367,7 @@ class MatrixFederationHttpClient(object):
logger.debug(
"{%s} [%s] Waiting %ss before re-sending...",
request.txn_id,
destination,
request.destination,
delay,
)
@ -378,7 +379,7 @@ class MatrixFederationHttpClient(object):
logger.info(
"{%s} [%s] Got response headers: %d %s",
request.txn_id,
destination,
request.destination,
response.code,
response.phrase.decode('ascii', errors='replace'),
)
@ -411,8 +412,9 @@ class MatrixFederationHttpClient(object):
destination_is must be non-None.
method (bytes): The HTTP method of the request
url_bytes (bytes): The URI path of the request
headers_dict (dict): Dictionary of request headers to append to
content (bytes): The body of the request
headers_dict (dict[bytes, list[bytes]]): Dictionary of request headers to
append to
content (object): The body of the request
destination_is (bytes): As 'destination', but if the destination is an
identity server