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 16import time 17 18from src.proto.grpc.testing import metrics_pb2 19from src.proto.grpc.testing import metrics_pb2_grpc 20 21GAUGE_NAME = 'python_overall_qps' 22 23 24class 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