heron/instance/tests/python/utils/global_metrics_unittest.py

#!/usr/bin/env python3
# -*- encoding: utf-8 -*-

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# pylint: disable=missing-docstring

import unittest
import threading

from heronpy.api import global_metrics
import heron.instance.tests.python.utils.mock_generator as mock_generator

class GlobalMetricsTest(unittest.TestCase):
  def setUp(self):
    self.metrics_collector = mock_generator.MockMetricsCollector()
    global_metrics.init(self.metrics_collector, 10)
    self.lock = threading.Lock()

  def test_normal(self):
    global_metrics.incr("mycounter_a")
    global_metrics.incr("mycounter_b", 3)
    global_metrics.safe_incr("mycounter_c", 5)
    counter = global_metrics.metricsContainer
    d = counter.get_value_and_reset()
    self.assertTrue("mycounter_a" in d)
    self.assertTrue("mycounter_b" in d)
    self.assertTrue("mycounter_c" in d)
    self.assertEqual(d["mycounter_a"], 1)
    self.assertEqual(d["mycounter_b"], 3)
    self.assertEqual(d["mycounter_c"], 5)

  def concurrent_incr(self):
    def incr_worker():
      global_metrics.safe_incr("K")
      global_metrics.safe_incr("K", 2)
      global_metrics.safe_incr("K", 3)
    threads = []
    for i in range(10):
      t = threading.Thread(target=incr_worker)
      threads.append(t)
      t.start()
    for t in threads:
      t.join()
    counter = global_metrics.metricsContainer
    d = counter.get_value_and_reset()
    self.assertTrue("K" in d)
    self.assertEqual(d["K"], 60)

  def test_concurrent_incr(self):
    for i in range(100):
      global_metrics.metricsContainer.get_value_and_reset()
      self.concurrent_incr()