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WIP. Implement CB interop test

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pull/25142/head
Richard Belleville 4 years ago
parent 9f533f753c
commit c4d3fc749f
1 changed files with 102 additions and 22 deletions
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  1. 124
      src/python/grpcio_tests/tests_py3_only/interop/xds_interop_client.py

124
src/python/grpcio_tests/tests_py3_only/interop/xds_interop_client.py
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@ -13,6 +13,8 @@
# limitations under the License.
import argparse
import collections
import datetime
import logging
import signal
import threading
@ -42,8 +44,16 @@ _SUPPORTED_METHODS = (
"EmptyCall",
)
_METHOD_STR_TO_ENUM = {
"UnaryCall": messages_pb2.ClientConfigureRequest.UNARY_CALL,
"EmptyCall": messages_pb2.ClientConfigureRequest.EMPTY_CALL,
}
_METHOD_ENUM_TO_STR = {v: k for k, v in _METHOD_STR_TO_ENUM.items()}
PerMethodMetadataType = Mapping[str, Sequence[Tuple[str, str]]]
_CONFIG_CHANGE_TIMEOUT = datetime.timedelta(milliseconds=500)
class _StatsWatcher:
_start: int
@ -98,6 +108,9 @@ _stop_event = threading.Event()
_global_rpc_id: int = 0
_watchers: Set[_StatsWatcher] = set()
_global_server = None
_global_rpcs_started: Mapping[str, int] = collections.defaultdict(int)
_global_rpcs_succeeded: Mapping[str, int] = collections.defaultdict(int)
_global_rpcs_failed: Mapping[str, int] = collections.defaultdict(int)
def _handle_sigint(sig, frame):
@ -129,6 +142,17 @@ class _LoadBalancerStatsServicer(test_pb2_grpc.LoadBalancerStatsServiceServicer
logger.info("Returning stats response: {}".format(response))
return response
def GetClientAccumulatedStats(self, request: messages_pb2.LoadBalancerAccumulatedStatsRequest, context: grpc.ServicerContext):
logger.info("Received cumulative stats request.")
response = messages_pb2.LoadBalancerAccumulatedStatsResponse()
with _global_lock:
for method in _SUPPORTED_METHODS:
response.num_rpcs_started_by_method[method] = _global_rpcs_started.get[method]
response.num_rpcs_succeeded_by_method[method] = _global_rpcs_succeeded.get[method]
response.num_rpcs_failed_by_method[method] = _global_rpcs_succeeded.get[method]
logger.info("Returning cumulative stats request.")
return response
def _start_rpc(method: str, metadata: Sequence[Tuple[str, str]],
request_id: int, stub: test_pb2_grpc.TestServiceStub,
@ -153,11 +177,15 @@ def _on_rpc_done(rpc_id: int, future: grpc.Future, method: str,
exception = future.exception()
hostname = ""
if exception is not None:
with _global_lock:
_global_rpcs_failed[method] += 1
if exception.code() == grpc.StatusCode.DEADLINE_EXCEEDED:
logger.error(f"RPC {rpc_id} timed out")
else:
logger.error(exception)
else:
with _global_lock:
_global_rpcs_succeeded[method] += 1
response = future.result()
hostname = None
for metadatum in future.initial_metadata():
@ -193,25 +221,52 @@ def _cancel_all_rpcs(futures: Mapping[int, Tuple[grpc.Future, str]]) -> None:
for future, _ in futures.values():
future.cancel()
class _ChannelConfiguration:
"""Configuration for a single client channel.
Instances of this class are meant to be dealt with as PODs. That is,
data member should be accessed directly. This class is not thread-safe.
When accessing any of its members, the lock member should be held.
"""
def __init__(self, method: str, metadata: Sequence[Tuple[str, str]],
qps: int, server: str, rpc_timeout_sec: int,
print_response: bool):
# condition is signalled when a change is made to the config.
self.condition = threading.Condition()
def _run_single_channel(method: str, metadata: Sequence[Tuple[str, str]],
qps: int, server: str, rpc_timeout_sec: int,
print_response: bool):
self.method = method
self.metadata = metadata
self.qps = qps
self.server = server
self.rpc_timeout_sec = rpc_timeout_sec
self.print_response = print_response
def _run_single_channel(config: _ChannelConfiguration):
global _global_rpc_id # pylint: disable=global-statement
duration_per_query = 1.0 / float(qps)
with config.condition:
server = config.server
with grpc.insecure_channel(server) as channel:
stub = test_pb2_grpc.TestServiceStub(channel)
futures: Dict[int, Tuple[grpc.Future, str]] = {}
while not _stop_event.is_set():
with config.condition:
if config.qps == 0:
config.condition.wait(timeout=_CONFIG_CHANGE_TIMEOUT.total_seconds())
continue
else:
duration_per_query = 1.0 / float(config.qps)
request_id = None
with _global_lock:
request_id = _global_rpc_id
_global_rpc_id += 1
_global_rpcs_started[config.method] += 1
start = time.time()
end = start + duration_per_query
_start_rpc(method, metadata, request_id, stub,
float(rpc_timeout_sec), futures)
_remove_completed_rpcs(futures, print_response)
with config.condition:
_start_rpc(config.method, config.metadata, request_id, stub,
float(config.rpc_timeout_sec), futures)
with config.condition:
_remove_completed_rpcs(futures, config.print_response)
logger.debug(f"Currently {len(futures)} in-flight RPCs")
now = time.time()
while now < end:
@ -220,26 +275,44 @@ def _run_single_channel(method: str, metadata: Sequence[Tuple[str, str]],
_cancel_all_rpcs(futures)
class _XdsUpdateClientConfigureServicer(test_pb2_grpc.XdsUpdateClientConfigureServiceServicer):
def __init__(self, per_method_configs: Mapping[str, _ChannelConfiguration], qps: int):
super(_XdsUpdateClientConfigureServicer).__init__()
self._per_method_configs = per_method_configs
self._qps = qps
def Configure(self, request: messages_pb2.ClientConfigureRequest,
context: grpc.ServicerContext) -> messages_pb2.ClientConfigureResponse:
method_strs = (_METHOD_ENUM_TO_STR[t] for t in request.types)
for method in _SUPPORTED_METHODS:
method_enum = _METHOD_STR_TO_ENUM[method]
if method in method_strs:
qps = self._qps
metadata = ((md.key, md.value) for md in request.metadata if md.type == method_enum)
else:
qps = 0
metadata = ()
channel_config = self._per_method_config[method]
with channel_config.condition:
channel_config.qps = qps
channel_config.metadata = metadata
channel_config.condition.notify_all()
# TODO: Wait for all channels to respond until responding to RPC?
return messages_pb2.ClientConfigureResponse()
class _MethodHandle:
"""An object grouping together threads driving RPCs for a method."""
_channel_threads: List[threading.Thread]
def __init__(self, method: str, metadata: Sequence[Tuple[str, str]],
num_channels: int, qps: int, server: str, rpc_timeout_sec: int,
print_response: bool):
def __init__(self, num_channels: int, channel_config: _ChannelConfiguration):
"""Creates and starts a group of threads running the indicated method."""
self._channel_threads = []
for i in range(num_channels):
thread = threading.Thread(target=_run_single_channel,
args=(
method,
metadata,
qps,
server,
rpc_timeout_sec,
print_response,
))
args=(channel_config,))
thread.start()
self._channel_threads.append(thread)
@ -254,15 +327,22 @@ def _run(args: argparse.Namespace, methods: Sequence[str],
logger.info("Starting python xDS Interop Client.")
global _global_server # pylint: disable=global-statement
method_handles = []
for method in methods:
channel_configs = {}
for method in _SUPPORTED_METHODS:
if method in methods:
qps = args.qps
else:
qps = 0
channel_config = _ChannelConfiguration(method, per_method_metadata.get(method, []),
qps, args.server, args.rpc_timeout_sec, args.print_response)
channel_configs[method] = channel_config
method_handles.append(
_MethodHandle(method, per_method_metadata.get(method, []),
args.num_channels, args.qps, args.server,
args.rpc_timeout_sec, args.print_response))
_MethodHandle(args.num_channels, channel_config))
_global_server = grpc.server(futures.ThreadPoolExecutor())
_global_server.add_insecure_port(f"0.0.0.0:{args.stats_port}")
test_pb2_grpc.add_LoadBalancerStatsServiceServicer_to_server(
_LoadBalancerStatsServicer(), _global_server)
test_pb2_grpc.add_XdsUpdateClientConfigureServiceServicer_to_server(_XdsUpdateClientConfigureServicer(channel_configs, args.qps), _global_server)
_global_server.start()
_global_server.wait_for_termination()
for method_handle in method_handles:

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