src/python/grpcio/tests/stress/metrics_server.py

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"""MetricsService for publishing stress test qps data."""

import time

from src.proto.grpc.testing import metrics_pb2

GAUGE_NAME = 'python_overall_qps'


class MetricsServer(metrics_pb2.BetaMetricsServiceServicer):

  def __init__(self, histogram):
    self._start_time = time.time()
    self._histogram = histogram

  def _get_qps(self):
    count = self._histogram.get_data().count
    delta = time.time() - self._start_time
    self._histogram.reset()
    self._start_time = time.time()
    return int(count/delta)

  def GetAllGauges(self, request, context):
    qps = self._get_qps()
    return [metrics_pb2.GaugeResponse(name=GAUGE_NAME, long_value=qps)]

  def GetGauge(self, request, context):
    if request.name != GAUGE_NAME:
      raise Exception('Gauge {} does not exist'.format(request.name))
    qps = self._get_qps()
    return metrics_pb2.GaugeResponse(name=GAUGE_NAME, long_value=qps)