1 # Copyright 2016 gRPC authors. 2 # 3 # Licensed under the Apache License, Version 2.0 (the "License"); 4 # you may not use this file except in compliance with the License. 5 # You may obtain a copy of the License at 6 # 7 # http://www.apache.org/licenses/LICENSE-2.0 8 # 9 # Unless required by applicable law or agreed to in writing, software 10 # distributed under the License is distributed on an "AS IS" BASIS, 11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 # See the License for the specific language governing permissions and 13 # limitations under the License. 14 """MetricsService for publishing stress test qps data.""" 15 16 import time 17 18 from src.proto.grpc.testing import metrics_pb2 19 from src.proto.grpc.testing import metrics_pb2_grpc 20 21 GAUGE_NAME = 'python_overall_qps' 22 23 24 class MetricsServer(metrics_pb2_grpc.MetricsServiceServicer): 25 26 def __init__(self, histogram): 27 self._start_time = time.time() 28 self._histogram = histogram 29 30 def _get_qps(self): 31 count = self._histogram.get_data().count 32 delta = time.time() - self._start_time 33 self._histogram.reset() 34 self._start_time = time.time() 35 return int(count / delta) 36 37 def GetAllGauges(self, request, context): 38 qps = self._get_qps() 39 return [metrics_pb2.GaugeResponse(name=GAUGE_NAME, long_value=qps)] 40 41 def GetGauge(self, request, context): 42 if request.name != GAUGE_NAME: 43 raise Exception('Gauge {} does not exist'.format(request.name)) 44 qps = self._get_qps() 45 return metrics_pb2.GaugeResponse(name=GAUGE_NAME, long_value=qps) 46
