Differential D23 Diff 74 swh/storage/tests/test_archiver.py

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swh/storage/tests/test_archiver.py

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				# Copyright (C) 2015 The Software Heritage developers
				# See the AUTHORS file at the top-level directory of this distribution
				# License: GNU General Public License version 3, or any later version
				# See top-level LICENSE file for more information

				import tempfile
				import unittest
				import os

				from nose.tools import istest
				from nose.plugins.attrib import attr
				from datetime import datetime, timedelta

				from swh.core import hashutil
				from swh.core.tests.db_testing import DbTestFixture
				from server_testing import ServerTestFixture

				from swh.storage import Storage
				from swh.storage.exc import ObjNotFoundError
				from swh.storage.archiver import ArchiverDirector
				from swh.storage.objstorage.api.client import RemoteObjStorage
				from swh.storage.objstorage.api.server import app

				TEST_DIR = os.path.dirname(os.path.abspath(__file__))
				TEST_DATA_DIR = os.path.join(TEST_DIR, '../../../../swh-storage-testdata')


				@attr('db')
				class TestArchiver(DbTestFixture, ServerTestFixture,
				unittest.TestCase):
				""" Test the objstorage archiver.
				"""

				TEST_DB_DUMP = os.path.join(TEST_DATA_DIR, 'dumps/swh.dump')

				def setUp(self):
				# Launch the backup server
				self.backup_objroot = tempfile.mkdtemp()
				self.config = {'storage_base': self.backup_objroot,
				'storage_depth': 3}
				self.app = app
				super().setUp()

				# Launch a client to check objects presence
				print("url", self.url())
				self.remote_objstorage = RemoteObjStorage(self.url())
				# Create the local storage.
				self.objroot = tempfile.mkdtemp()
				self.storage = Storage(self.conn, self.objroot)
				# Initializes and fill the tables.
				self.initialize_tables()
				# Create the archiver
				self.archiver = self.__create_director()

				def tearDown(self):
				self.empty_tables()
				super().tearDown()

				def initialize_tables(self):
				""" Initializes the database with a sample of items.
				"""
				# Add an archive
				self.cursor.execute("""INSERT INTO archives(id, url)
				VALUES('Local', 'http://localhost:{}/')
				""".format(self.port))
				self.conn.commit()

				def empty_tables(self):
				# Remove all content
				self.cursor.execute('DELETE FROM content_archive')
				self.cursor.execute('DELETE FROM archives')
				self.conn.commit()
				qcamposAuthorUnsubmitted Done Inline Actions I had to do some db commits because the archiver directly uses the local storage's db. As the test class uses it's own cursor, the archiver would not have been aware of these changes otherwise. But that don't seems very nice. Is there another way? qcampos: I had to do some db commits because the archiver directly uses the local storage's db. As the…
				ardumontUnsubmitted Done Inline Actions Using self.conn? ardumont: Using self.conn?

				def __add_content(self, content_data, status='missing', date='now()'):
				# Add the content
				content = hashutil.hashdata(content_data)
				content.update({'data': content_data})
				self.storage.content_add([content])
				# Then update database
				content_id = r'\x' + hashutil.hash_to_hex(content['sha1'])
				self.cursor.execute("""INSERT INTO content_archive
				VALUES('%s'::sha1, 'Local', '%s', %s)
				""" % (content_id, status, date))
				return content['sha1']

				def __get_missing(self):
				self.cursor.execute("""SELECT content_id
				FROM content_archive
				WHERE status='missing'""")
				return self.cursor.fetchall()

				def __create_director(self, batch_size=5000, archival_max_age=3600,
				retention_policy=1, asynchronous=False):
				config = {
				'objstorage_path': self.objroot,
				'batch_max_size': batch_size,
				'archival_max_age': archival_max_age,
				'retention_policy': retention_policy,
				'asynchronous': asynchronous # Avoid depending on queue for tests.
				}
				director = ArchiverDirector(self.conn, config)
				return director

				@istest
				def archive_missing_content(self):
				""" Run archiver on a missing content should archive it.
				"""
				content_data = b'archive_missing_content'
				id = self.__add_content(content_data)
				# After the run, the content should be in the archive.
				self.archiver.run()
				remote_data = self.remote_objstorage.content_get(id)
				self.assertEquals(content_data, remote_data)

				@istest
				def archive_present_content(self):
				""" A content that is not 'missing' shouldn't be archived.
				"""
				id = self.__add_content(b'archive_present_content', status='present')
				# After the run, the content should NOT be in the archive.*
				self.archiver.run()
				with self.assertRaises(ObjNotFoundError):
				self.remote_objstorage.content_get(id)

				@istest
				def archive_ongoing_remaining(self):
				""" A content that is ongoing and still have some time
				to be archived should not be rescheduled.
				"""
				id = self.__add_content(b'archive_ongoing_remaining', status='ongoing')
				items = [x for batch in self.archiver.get_unarchived_content()
				for x in batch]
				id = r'\x' + hashutil.hash_to_hex(id)
				self.assertNotIn(id, items)

				@istest
				def archive_ongoing_elapsed(self):
				""" A content that is ongoing but with elapsed time should
				be rescheduled.
				"""
				# Create an ongoing archive content with time elapsed by 1s.
				id = self.__add_content(
				b'archive_ongoing_elapsed',
				status='ongoing',
				date="'%s'" % (datetime.now() - timedelta(
				seconds=self.archiver.archival_max_age + 1
				))
				)
				items = [x for batch in self.archiver.get_unarchived_content()
				for x in batch]
				id = r'\x' + hashutil.hash_to_hex(id)
				self.assertIn(id, items)

				@istest
				def archive_already_enough(self):
				""" A content missing should not be archived if there
				is already enough copies.
				"""
				id = self.__add_content(b'archive_alread_enough')
				director = self.__create_director(retention_policy=0)
				director.run()
				with self.assertRaises(ObjNotFoundError):
				self.remote_objstorage.content_get(id)