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#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""Tests for the multi-processing worker process."""
from __future__ import unicode_literals
import unittest
from dfvfs.lib import errors as dfvfs_errors
from dfvfs.path import fake_path_spec
from plaso.containers import sessions
from plaso.containers import tasks
from plaso.engine import configurations
from plaso.engine import worker
from plaso.multi_processing import multi_process_queue
from plaso.multi_processing import worker_process
from tests import test_lib as shared_test_lib
from tests.multi_processing import test_lib
class TestEventExtractionWorker(worker.EventExtractionWorker):
"""Event extraction worker for testing."""
# pylint: disable=unused-argument
def ProcessPathSpec(self, mediator, path_spec):
"""Processes a path specification.
Args:
mediator (ParserMediator): mediates interactions between parsers and
other components, such as storage and dfvfs.
path_spec (dfvfs.PathSpec): path specification.
"""
pass # pylint: disable=unnecessary-pass
class TestFailureEventExtractionWorker(worker.EventExtractionWorker):
"""Event extraction worker for testing failure."""
# pylint: disable=unused-argument
def ProcessPathSpec(self, mediator, path_spec):
"""Processes a path specification.
Args:
mediator (ParserMediator): mediates interactions between parsers and
other components, such as storage and dfvfs.
path_spec (dfvfs.PathSpec): path specification.
Raises:
dfvfs_errors.CacheFullError: cache full error.
"""
raise dfvfs_errors.CacheFullError()
class WorkerProcessTest(test_lib.MultiProcessingTestCase):
"""Tests the multi-processing worker process."""
# pylint: disable=protected-access
def testInitialization(self):
"""Tests the initialization."""
test_process = worker_process.WorkerProcess(
None, None, None, None, None, name='TestWorker')
self.assertIsNotNone(test_process)
def testGetStatus(self):
"""Tests the _GetStatus function."""
test_process = worker_process.WorkerProcess(
None, None, None, None, None, name='TestWorker')
status_attributes = test_process._GetStatus()
self.assertIsNotNone(status_attributes)
self.assertEqual(status_attributes['identifier'], 'TestWorker')
self.assertEqual(status_attributes['last_activity_timestamp'], 0.0)
self.assertIsNone(status_attributes['number_of_produced_errors'])
session = sessions.Session()
storage_writer = self._CreateStorageWriter(session)
knowledge_base = self._CreateKnowledgeBase()
test_process._parser_mediator = self._CreateParserMediator(
storage_writer, knowledge_base)
status_attributes = test_process._GetStatus()
self.assertIsNotNone(status_attributes)
self.assertEqual(status_attributes['identifier'], 'TestWorker')
self.assertEqual(status_attributes['last_activity_timestamp'], 0.0)
self.assertEqual(status_attributes['number_of_produced_errors'], 0)
def testMain(self):
"""Tests the _Main function."""
task_queue = multi_process_queue.MultiProcessingQueue(timeout=1)
configuration = configurations.ProcessingConfiguration()
test_process = worker_process.WorkerProcess(
task_queue, None, None, None, configuration, name='TestWorker')
test_process._abort = True
test_process._pid = 0
test_process._Main()
def testProcessPathSpec(self):
"""Tests the _ProcessPathSpec function."""
configuration = configurations.ProcessingConfiguration()
test_process = worker_process.WorkerProcess(
None, None, None, None, configuration, name='TestWorker')
session = sessions.Session()
storage_writer = self._CreateStorageWriter(session)
knowledge_base = self._CreateKnowledgeBase()
parser_mediator = self._CreateParserMediator(storage_writer, knowledge_base)
path_spec = fake_path_spec.FakePathSpec(location='/test/file')
extraction_worker = TestEventExtractionWorker()
test_process._ProcessPathSpec(extraction_worker, parser_mediator, path_spec)
self.assertEqual(parser_mediator._number_of_errors, 0)
extraction_worker = TestFailureEventExtractionWorker()
test_process._ProcessPathSpec(extraction_worker, parser_mediator, path_spec)
self.assertEqual(parser_mediator._number_of_errors, 0)
self.assertTrue(test_process._abort)
test_process._ProcessPathSpec(None, parser_mediator, path_spec)
self.assertEqual(parser_mediator._number_of_errors, 1)
def testProcessTask(self):
"""Tests the _ProcessTask function."""
session = sessions.Session()
storage_writer = self._CreateStorageWriter(session)
knowledge_base = self._CreateKnowledgeBase()
configuration = configurations.ProcessingConfiguration()
test_process = worker_process.WorkerProcess(
None, storage_writer, knowledge_base, session.identifier, configuration,
name='TestWorker')
test_process._parser_mediator = self._CreateParserMediator(
storage_writer, knowledge_base)
task = tasks.Task(session_identifier=session.identifier)
test_process._ProcessTask(task)
def testStartAndStopProfiling(self):
"""Tests the _StartProfiling and _StopProfiling functions."""
with shared_test_lib.TempDirectory() as temp_directory:
configuration = configurations.ProcessingConfiguration()
configuration.profiling.directory = temp_directory
configuration.profiling.profilers = set([
'memory', 'parsers', 'processing', 'serializers', 'storage',
'task_queue'])
test_process = worker_process.WorkerProcess(
None, None, None, None, configuration, name='TestWorker')
test_process._extraction_worker = TestEventExtractionWorker()
test_process._StartProfiling(None)
test_process._StartProfiling(configuration.profiling)
test_process._StopProfiling()
def testSignalAbort(self):
"""Tests the SignalAbort function."""
test_process = worker_process.WorkerProcess(
None, None, None, None, None, name='TestWorker')
test_process.SignalAbort()
if __name__ == '__main__':
unittest.main()
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