647b66a2ce
This patch adds the erasure code reconstructor. It follows the
design of the replicator but:
- There is no notion of update() or update_deleted().
- There is a single job processor
- Jobs are processed partition by partition.
- At the end of processing a rebalanced or handoff partition, the
reconstructor will remove successfully reverted objects if any.
And various ssync changes such as the addition of reconstruct_fa()
function called from ssync_sender which performs the actual
reconstruction while sending the object to the receiver
Co-Authored-By: Alistair Coles <alistair.coles@hp.com>
Co-Authored-By: Thiago da Silva <thiago@redhat.com>
Co-Authored-By: John Dickinson <me@not.mn>
Co-Authored-By: Clay Gerrard <clay.gerrard@gmail.com>
Co-Authored-By: Tushar Gohad <tushar.gohad@intel.com>
Co-Authored-By: Samuel Merritt <sam@swiftstack.com>
Co-Authored-By: Christian Schwede <christian.schwede@enovance.com>
Co-Authored-By: Yuan Zhou <yuan.zhou@intel.com>
blueprint ec-reconstructor
Change-Id: I7d15620dc66ee646b223bb9fff700796cd6bef51
274 lines
9.5 KiB
Python
274 lines
9.5 KiB
Python
#!/usr/bin/python -u
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# Copyright (c) 2010-2012 OpenStack Foundation
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from io import StringIO
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from tempfile import mkdtemp
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from textwrap import dedent
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import functools
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import unittest
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import os
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import shutil
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import uuid
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from swift.common import internal_client, utils
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from test.probe.brain import BrainSplitter
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from test.probe.common import ReplProbeTest
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def _sync_methods(object_server_config_paths):
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"""
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Get the set of all configured sync_methods for the object-replicator
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sections in the list of config paths.
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"""
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sync_methods = set()
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for config_path in object_server_config_paths:
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options = utils.readconf(config_path, 'object-replicator')
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sync_methods.add(options.get('sync_method', 'rsync'))
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return sync_methods
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def expected_failure_with_ssync(m):
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"""
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Wrapper for probetests that don't pass if you use ssync
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"""
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@functools.wraps(m)
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def wrapper(self, *args, **kwargs):
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obj_conf = self.configs['object-server']
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config_paths = [v for k, v in obj_conf.items()
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if k in self.brain.handoff_numbers]
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using_ssync = 'ssync' in _sync_methods(config_paths)
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failed = False
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try:
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return m(self, *args, **kwargs)
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except AssertionError:
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failed = True
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if not using_ssync:
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raise
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finally:
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if using_ssync and not failed:
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self.fail('This test is expected to fail with ssync')
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return wrapper
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class Test(ReplProbeTest):
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def setUp(self):
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"""
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Reset all environment and start all servers.
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"""
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super(Test, self).setUp()
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self.container_name = 'container-%s' % uuid.uuid4()
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self.object_name = 'object-%s' % uuid.uuid4()
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self.brain = BrainSplitter(self.url, self.token, self.container_name,
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self.object_name, 'object',
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policy=self.policy)
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self.tempdir = mkdtemp()
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conf_path = os.path.join(self.tempdir, 'internal_client.conf')
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conf_body = """
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[DEFAULT]
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swift_dir = /etc/swift
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[pipeline:main]
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pipeline = catch_errors cache proxy-server
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[app:proxy-server]
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use = egg:swift#proxy
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object_post_as_copy = false
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[filter:cache]
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use = egg:swift#memcache
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[filter:catch_errors]
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use = egg:swift#catch_errors
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"""
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with open(conf_path, 'w') as f:
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f.write(dedent(conf_body))
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self.int_client = internal_client.InternalClient(conf_path, 'test', 1)
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def tearDown(self):
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super(Test, self).tearDown()
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shutil.rmtree(self.tempdir)
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def _put_object(self, headers=None):
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headers = headers or {}
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self.int_client.upload_object(StringIO(u'stuff'), self.account,
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self.container_name,
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self.object_name, headers)
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def _post_object(self, headers):
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self.int_client.set_object_metadata(self.account, self.container_name,
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self.object_name, headers)
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def _delete_object(self):
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self.int_client.delete_object(self.account, self.container_name,
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self.object_name)
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def _get_object(self, headers=None, expect_statuses=(2,)):
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return self.int_client.get_object(self.account,
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self.container_name,
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self.object_name,
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headers,
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acceptable_statuses=expect_statuses)
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def _get_object_metadata(self):
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return self.int_client.get_object_metadata(self.account,
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self.container_name,
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self.object_name)
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def test_object_delete_is_replicated(self):
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self.brain.put_container(policy_index=int(self.policy))
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# put object
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self._put_object()
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# put newer object with sysmeta to first server subset
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self.brain.stop_primary_half()
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self._put_object()
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self.brain.start_primary_half()
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# delete object on second server subset
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self.brain.stop_handoff_half()
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self._delete_object()
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self.brain.start_handoff_half()
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# run replicator
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self.get_to_final_state()
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# check object deletion has been replicated on first server set
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self.brain.stop_primary_half()
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self._get_object(expect_statuses=(4,))
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self.brain.start_primary_half()
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# check object deletion persists on second server set
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self.brain.stop_handoff_half()
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self._get_object(expect_statuses=(4,))
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# put newer object to second server set
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self._put_object()
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self.brain.start_handoff_half()
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# run replicator
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self.get_to_final_state()
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# check new object has been replicated on first server set
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self.brain.stop_primary_half()
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self._get_object()
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self.brain.start_primary_half()
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# check new object persists on second server set
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self.brain.stop_handoff_half()
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self._get_object()
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@expected_failure_with_ssync
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def test_sysmeta_after_replication_with_subsequent_post(self):
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sysmeta = {'x-object-sysmeta-foo': 'sysmeta-foo'}
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usermeta = {'x-object-meta-bar': 'meta-bar'}
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self.brain.put_container(policy_index=int(self.policy))
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# put object
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self._put_object()
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# put newer object with sysmeta to first server subset
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self.brain.stop_primary_half()
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self._put_object(headers=sysmeta)
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metadata = self._get_object_metadata()
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for key in sysmeta:
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self.assertTrue(key in metadata)
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self.assertEqual(metadata[key], sysmeta[key])
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self.brain.start_primary_half()
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# post some user meta to second server subset
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self.brain.stop_handoff_half()
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self._post_object(usermeta)
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metadata = self._get_object_metadata()
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for key in usermeta:
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self.assertTrue(key in metadata)
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self.assertEqual(metadata[key], usermeta[key])
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for key in sysmeta:
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self.assertFalse(key in metadata)
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self.brain.start_handoff_half()
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# run replicator
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self.get_to_final_state()
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# check user metadata has been replicated to first server subset
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# and sysmeta is unchanged
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self.brain.stop_primary_half()
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metadata = self._get_object_metadata()
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expected = dict(sysmeta)
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expected.update(usermeta)
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for key in expected.keys():
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self.assertTrue(key in metadata, key)
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self.assertEqual(metadata[key], expected[key])
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self.brain.start_primary_half()
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# check user metadata and sysmeta both on second server subset
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self.brain.stop_handoff_half()
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metadata = self._get_object_metadata()
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for key in expected.keys():
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self.assertTrue(key in metadata, key)
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self.assertEqual(metadata[key], expected[key])
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def test_sysmeta_after_replication_with_prior_post(self):
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sysmeta = {'x-object-sysmeta-foo': 'sysmeta-foo'}
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usermeta = {'x-object-meta-bar': 'meta-bar'}
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self.brain.put_container(policy_index=int(self.policy))
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# put object
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self._put_object()
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# put user meta to first server subset
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self.brain.stop_handoff_half()
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self._post_object(headers=usermeta)
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metadata = self._get_object_metadata()
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for key in usermeta:
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self.assertTrue(key in metadata)
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self.assertEqual(metadata[key], usermeta[key])
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self.brain.start_handoff_half()
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# put newer object with sysmeta to second server subset
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self.brain.stop_primary_half()
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self._put_object(headers=sysmeta)
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metadata = self._get_object_metadata()
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for key in sysmeta:
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self.assertTrue(key in metadata)
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self.assertEqual(metadata[key], sysmeta[key])
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self.brain.start_primary_half()
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# run replicator
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self.get_to_final_state()
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# check stale user metadata is not replicated to first server subset
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# and sysmeta is unchanged
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self.brain.stop_primary_half()
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metadata = self._get_object_metadata()
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for key in sysmeta:
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self.assertTrue(key in metadata)
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self.assertEqual(metadata[key], sysmeta[key])
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for key in usermeta:
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self.assertFalse(key in metadata)
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self.brain.start_primary_half()
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# check stale user metadata is removed from second server subset
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# and sysmeta is replicated
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self.brain.stop_handoff_half()
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metadata = self._get_object_metadata()
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for key in sysmeta:
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self.assertTrue(key in metadata)
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self.assertEqual(metadata[key], sysmeta[key])
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for key in usermeta:
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self.assertFalse(key in metadata)
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if __name__ == "__main__":
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unittest.main()
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