def test_should_retry_on_error(retry_flag, error_code, result):
request = Request(
headers={'re': retry_flag},
)
error = TChannelError.from_code(error_code, description="retry")
assert request.should_retry_on_error(error) == result
def test_should_retry_on_error(retry_flag, error_code, result):
request = Request(
headers={'re': retry_flag},
)
error = TChannelError.from_code(error_code, description="retry")
assert request.should_retry_on_error(error) == result
def test_after_receive_system_error_per_attempt(statsd_hook, req):
error = TChannelError.from_code(code=ErrorCode.bad_request)
statsd_hook.after_receive_system_error_per_attempt(req, error)
statsd_hook._statsd.count.assert_called_with(
"tchannel.outbound.calls.per-attempt.system-errors.no-service." +
"test.endpoint1.bad-request", 1
)
def send(self,
arg1,
arg2,
arg3,
headers=None,
traceflag=None,
retry_limit=None,
ttl=None):
arg1, arg2, arg3 = map(maybe_stream, [arg1, arg2, arg3])
endpoint = yield read_full(arg1)
headers = headers or {}
headers.setdefault('as', self.arg_scheme)
vcr_request = proxy.Request(
serviceName=self.service.encode('utf-8'),
hostPort=self.hostport,
knownPeers=self.original_tchannel.peers.hosts,
endpoint=endpoint,
headers=(yield read_full(arg2)),
body=(yield read_full(arg3)),
argScheme=getattr(proxy.ArgScheme, self.arg_scheme.upper()),
transportHeaders=[
proxy.TransportHeader(bytes(k), bytes(v))
for k, v in headers.items()
],
)
# TODO what to do with traceflag, attempt-times, ttl
# TODO catch protocol errors
from tchannel import TChannel
tchannel = TChannel('proxy-client')
with force_reset():
vcr_response_future = tchannel.thrift(
proxy.VCRProxy.send(vcr_request),
hostport=self.vcr_hostport,
)
try:
vcr_response = yield vcr_response_future
except proxy.RemoteServiceError as e:
raise TChannelError.from_code(
e.code,
description=("The remote service threw a protocol error: %s" %
e.message))
response = Response(
code=vcr_response.body.code,
argstreams=[
maybe_stream(endpoint),
maybe_stream(vcr_response.body.headers),
maybe_stream(vcr_response.body.body),
],
# TODO headers=vcr_response.transportHeaders,
)
raise gen.Return(response)
def test_after_receive_system_error_per_attempt(statsd_hook, request):
error = TChannelError.from_code(code=ErrorCode.bad_request)
statsd_hook.after_receive_system_error_per_attempt(request, error)
statsd_hook._statsd.count.assert_called_with(
"tchannel.outbound.calls.per-attempt.system-errors.no-service." +
"test.endpoint1.bad-request", 1
)
def send(self, arg1, arg2, arg3,
headers=None,
traceflag=None,
retry_limit=None,
ttl=None):
arg1, arg2, arg3 = map(maybe_stream, [arg1, arg2, arg3])
endpoint = yield read_full(arg1)
headers = headers or {}
headers.setdefault('as', self.arg_scheme)
vcr_request = proxy.Request(
serviceName=self.service.encode('utf-8'),
hostPort=self.hostport,
knownPeers=self.original_tchannel.peers.hosts,
endpoint=endpoint,
headers=(yield read_full(arg2)),
body=(yield read_full(arg3)),
argScheme=getattr(proxy.ArgScheme, self.arg_scheme.upper()),
transportHeaders=[
proxy.TransportHeader(bytes(k), bytes(v))
for k, v in headers.items()
],
)
# TODO what to do with traceflag, attempt-times, ttl
# TODO catch protocol errors
from tchannel import TChannel
tchannel = TChannel('proxy-client')
with force_reset():
vcr_response_future = tchannel.thrift(
proxy.VCRProxy.send(vcr_request),
hostport=self.vcr_hostport,
)
try:
vcr_response = yield vcr_response_future
except proxy.RemoteServiceError as e:
raise TChannelError.from_code(
e.code,
description=(
"The remote service threw a protocol error: %s" %
e.message
)
)
response = Response(
code=vcr_response.body.code,
argstreams=[
maybe_stream(endpoint),
maybe_stream(vcr_response.body.headers),
maybe_stream(vcr_response.body.body),
],
# TODO headers=vcr_response.transportHeaders,
)
raise gen.Return(response)
def send(self, arg1, arg2, arg3, headers=None, ttl=None, **kwargs):
arg1, arg2, arg3 = list(map(maybe_stream, [arg1, arg2, arg3]))
endpoint = yield read_full(arg1)
headers = headers or {}
headers.setdefault('as', self.arg_scheme)
vcr_request = proxy.Request(
serviceName=self.service.encode('utf-8'),
hostPort=self.hostport,
knownPeers=self.original_tchannel.peers.hosts,
endpoint=endpoint,
headers=(yield read_full(arg2)),
body=(yield read_full(arg3)),
argScheme=getattr(proxy.ArgScheme, self.arg_scheme.upper()),
transportHeaders=[
proxy.TransportHeader(bytes(k.encode('utf8')),
bytes(v.encode('utf8')))
for k, v in headers.items()
],
)
# TODO what to do with traceflag, attempt-times, ttl
# TODO catch protocol errors
from tchannel import TChannel
tchannel = TChannel('proxy-client')
with force_reset():
vcr_response_future = tchannel.thrift(
proxy.VCRProxy.send(vcr_request),
hostport=self.vcr_hostport,
timeout=float(ttl) * 1.1 if ttl else ttl,
# If a timeout was specified, use that plus 10% to give some
# leeway to the VCR proxy request itself.
)
try:
vcr_response = yield vcr_response_future
except proxy.RemoteServiceError as e:
raise TChannelError.from_code(
e.code,
description=("The remote service threw a protocol error: %s" %
(e, )))
response = Response(
code=vcr_response.body.code,
argstreams=[
maybe_stream(endpoint),
maybe_stream(vcr_response.body.headers),
maybe_stream(vcr_response.body.body),
],
# TODO headers=vcr_response.transportHeaders,
)
raise gen.Return(response)
def handler_error(request, response):
yield tornado.gen.sleep(0.01)
response.connection.send_error(
ErrorCode.busy,
"retry",
response.id,
)
# stop normal response streams
response.set_exception(TChannelError("stop stream"))
def execute(request, response):
# send error message for test purpose only
connection = response.connection
connection.send_error(
protocoal_error.code,
protocoal_error.description,
response.id,
)
# stop normal response streams
response.set_exception(TChannelError("stop stream"))
def test_protocol_error(vcr_service, cassette, call, mock_server):
allow(cassette).can_replay.and_return(False)
expect(cassette).record.never()
mock_server.expect_call("endpoint").and_raise(TChannelError.from_code(1, description="great sadness"))
with pytest.raises(VCRProxy.RemoteServiceError) as exc_info:
yield call("endpoint", "body")
assert "great sadness" in str(exc_info)
assert exc_info.value.code == 1
def test_protocol_error(vcr_service, cassette, call, mock_server):
allow(cassette).can_replay.and_return(False)
expect(cassette).record.never()
mock_server.expect_call('endpoint').and_raise(
TChannelError.from_code(1, description='great sadness'))
with pytest.raises(proxy.RemoteServiceError) as exc_info:
yield call('endpoint', 'body')
assert 'great sadness' in str(exc_info)
assert exc_info.value.code == 1
def handler_error(request, response):
yield tornado.gen.sleep(0.01)
yield response.connection.send_error(BusyError("retry", request.id))
# stop normal response streams
response.set_exception(TChannelError("stop stream"))