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"""Test hook for running the $operationMetrics stage in the background.
This hook runs every five seconds.
"""
import os.path
from buildscripts.resmokelib import errors
from buildscripts.resmokelib.testing.hooks import jsfile
from buildscripts.resmokelib.testing.hooks.background_job import _BackgroundJob, _ContinuousDynamicJSTestCase
class AggregateResourceConsumptionMetricsInBackground(jsfile.JSHook):
"""A hook to run $operationMetrics stage in the background"""
def __init__(self, hook_logger, fixture, shell_options=None):
"""Initialize AggregateResourceConsumptionMetricsInBackground."""
description = "Run background $operationMetrics on all mongods while a test is running"
js_filename = os.path.join(
"jstests", "hooks", "run_aggregate_metrics_background.js")
jsfile.JSHook.__init__(self, hook_logger, fixture,
js_filename, description, shell_options=shell_options)
self._background_job = None
def before_suite(self, test_report):
"""Start the background thread."""
self._background_job = _BackgroundJob(
"AggregateResourceConsumptionMetricsInBackground")
self.logger.info("Starting the background aggregate metrics thread.")
self._background_job.start()
def after_suite(self, test_report):
"""Signal the background aggregate metrics thread to exit, and wait until it does."""
if self._background_job is None:
return
self.logger.info("Stopping the background aggregate metrics thread.")
self._background_job.stop()
def before_test(self, test, test_report):
"""Instruct the background aggregate metrics thread to run while 'test' is also running."""
if self._background_job is None:
return
hook_test_case = _ContinuousDynamicJSTestCase.create_before_test(
self.logger, test, self, self._js_filename, self._shell_options)
hook_test_case.configure(self.fixture)
self.logger.info(
"Resuming the background aggregate metrics thread.")
self._background_job.resume(hook_test_case, test_report)
def after_test(self, test, test_report): # noqa: D205,D400
"""Instruct the background aggregate metrics thread to stop running now that 'test' has
finished running.
"""
if self._background_job is None:
return
self.logger.info(
"Pausing the background aggregate metrics thread.")
self._background_job.pause()
if self._background_job.exc_info is not None:
if isinstance(self._background_job.exc_info[1], errors.TestFailure):
# If the mongo shell process running the JavaScript file exited with a non-zero
# return code, then we raise an errors.ServerFailure exception to cause resmoke.py's
# test execution to stop.
raise errors.ServerFailure(
self._background_job.exc_info[1].args[0])
else:
self.logger.error(
"Encountered an error inside the background aggregate metrics thread.",
exc_info=self._background_job.exc_info)
raise self._background_job.exc_info[1]
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