374 lines
14 KiB
Python
374 lines
14 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 hashlib import md5
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import itertools
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import unittest
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import uuid
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import random
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import shutil
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from collections import defaultdict
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from test.probe.common import ECProbeTest, Body
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from swift.common import direct_client
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from swift.common.storage_policy import EC_POLICY
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from swift.common.manager import Manager
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from swift.obj import reconstructor
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from swiftclient import client
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class TestReconstructorRevert(ECProbeTest):
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def setUp(self):
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super(TestReconstructorRevert, 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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# sanity
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self.assertEqual(self.policy.policy_type, EC_POLICY)
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self.reconstructor = Manager(["object-reconstructor"])
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def proxy_get(self):
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# GET object
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headers, body = client.get_object(self.url, self.token,
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self.container_name,
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self.object_name,
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resp_chunk_size=64 * 2 ** 10)
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resp_checksum = md5()
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for chunk in body:
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resp_checksum.update(chunk)
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return resp_checksum.hexdigest()
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def direct_get(self, node, part):
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req_headers = {'X-Backend-Storage-Policy-Index': int(self.policy)}
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headers, data = direct_client.direct_get_object(
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node, part, self.account, self.container_name,
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self.object_name, headers=req_headers,
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resp_chunk_size=64 * 2 ** 20)
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hasher = md5()
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for chunk in data:
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hasher.update(chunk)
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return hasher.hexdigest()
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def test_revert_object(self):
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# create EC container
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headers = {'X-Storage-Policy': self.policy.name}
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client.put_container(self.url, self.token, self.container_name,
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headers=headers)
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# get our node lists
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opart, onodes = self.object_ring.get_nodes(
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self.account, self.container_name, self.object_name)
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hnodes = self.object_ring.get_more_nodes(opart)
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# kill 2 a parity count number of primary nodes so we can
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# force data onto handoffs, we do that by renaming dev dirs
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# to induce 507
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p_dev1 = self.device_dir(onodes[0])
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p_dev2 = self.device_dir(onodes[1])
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self.kill_drive(p_dev1)
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self.kill_drive(p_dev2)
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# PUT object
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contents = Body()
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headers = {'x-object-meta-foo': 'meta-foo'}
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headers_post = {'x-object-meta-bar': 'meta-bar'}
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client.put_object(self.url, self.token, self.container_name,
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self.object_name, contents=contents,
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headers=headers)
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client.post_object(self.url, self.token, self.container_name,
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self.object_name, headers=headers_post)
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# (Some versions of?) swiftclient will mutate the headers dict on post
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headers_post.pop('X-Auth-Token', None)
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# these primaries can't serve the data any more, we expect 507
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# here and not 404 because we're using mount_check to kill nodes
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for onode in (onodes[0], onodes[1]):
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try:
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self.direct_get(onode, opart)
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except direct_client.DirectClientException as err:
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self.assertEqual(err.http_status, 507)
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else:
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self.fail('Node data on %r was not fully destroyed!' %
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(onode,))
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# now take out another primary
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p_dev3 = self.device_dir(onodes[2])
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self.kill_drive(p_dev3)
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# this node can't servce the data any more
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try:
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self.direct_get(onodes[2], opart)
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except direct_client.DirectClientException as err:
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self.assertEqual(err.http_status, 507)
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else:
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self.fail('Node data on %r was not fully destroyed!' %
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(onode,))
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# make sure we can still GET the object and its correct
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# we're now pulling from handoffs and reconstructing
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etag = self.proxy_get()
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self.assertEqual(etag, contents.etag)
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# rename the dev dirs so they don't 507 anymore
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self.revive_drive(p_dev1)
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self.revive_drive(p_dev2)
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self.revive_drive(p_dev3)
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# fire up reconstructor on handoff nodes only
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for hnode in hnodes:
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hnode_id = (hnode['port'] % 100) // 10
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self.reconstructor.once(number=hnode_id)
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# first three primaries have data again
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for onode in (onodes[0], onodes[2]):
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self.direct_get(onode, opart)
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# check meta
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meta = client.head_object(self.url, self.token,
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self.container_name,
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self.object_name)
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for key in headers_post:
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self.assertIn(key, meta)
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self.assertEqual(meta[key], headers_post[key])
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# handoffs are empty
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for hnode in hnodes:
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try:
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self.direct_get(hnode, opart)
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except direct_client.DirectClientException as err:
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self.assertEqual(err.http_status, 404)
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else:
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self.fail('Node data on %r was not fully destroyed!' %
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(hnode,))
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def test_delete_propagate(self):
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# create EC container
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headers = {'X-Storage-Policy': self.policy.name}
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client.put_container(self.url, self.token, self.container_name,
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headers=headers)
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# get our node lists
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opart, onodes = self.object_ring.get_nodes(
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self.account, self.container_name, self.object_name)
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hnodes = list(itertools.islice(
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self.object_ring.get_more_nodes(opart), 2))
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# PUT object
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contents = Body()
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client.put_object(self.url, self.token, self.container_name,
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self.object_name, contents=contents)
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# now lets shut down a couple of primaries
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failed_nodes = random.sample(onodes, 2)
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for node in failed_nodes:
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self.kill_drive(self.device_dir(node))
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# Write tombstones over the nodes that are still online
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client.delete_object(self.url, self.token,
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self.container_name,
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self.object_name)
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# spot check the primary nodes that are still online
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delete_timestamp = None
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for node in onodes:
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if node in failed_nodes:
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continue
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try:
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self.direct_get(node, opart)
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except direct_client.DirectClientException as err:
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self.assertEqual(err.http_status, 404)
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delete_timestamp = err.http_headers['X-Backend-Timestamp']
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else:
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self.fail('Node data on %r was not fully destroyed!' %
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(node,))
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# run the reconstructor on the handoff node multiple times until
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# tombstone is pushed out - each handoff node syncs to a few
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# primaries each time
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iterations = 0
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while iterations < 52:
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self.reconstructor.once(number=self.config_number(hnodes[0]))
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iterations += 1
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# see if the tombstone is reverted
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try:
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self.direct_get(hnodes[0], opart)
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except direct_client.DirectClientException as err:
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self.assertEqual(err.http_status, 404)
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if 'X-Backend-Timestamp' not in err.http_headers:
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# this means the tombstone is *gone* so it's reverted
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break
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else:
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self.fail('Still found tombstone on %r after %s iterations' % (
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hnodes[0], iterations))
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# tombstone is still on the *second* handoff
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try:
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self.direct_get(hnodes[1], opart)
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except direct_client.DirectClientException as err:
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self.assertEqual(err.http_status, 404)
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self.assertEqual(err.http_headers['X-Backend-Timestamp'],
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delete_timestamp)
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else:
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self.fail('Found obj data on %r' % hnodes[1])
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# repair the primaries
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self.revive_drive(self.device_dir(failed_nodes[0]))
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self.revive_drive(self.device_dir(failed_nodes[1]))
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# run reconstructor on second handoff
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self.reconstructor.once(number=self.config_number(hnodes[1]))
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# verify tombstone is reverted on the first pass
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try:
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self.direct_get(hnodes[1], opart)
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except direct_client.DirectClientException as err:
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self.assertEqual(err.http_status, 404)
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self.assertNotIn('X-Backend-Timestamp', err.http_headers)
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else:
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self.fail('Found obj data on %r' % hnodes[1])
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# sanity make sure proxy get can't find it
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try:
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self.proxy_get()
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except Exception as err:
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self.assertEqual(err.http_status, 404)
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else:
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self.fail('Node data on %r was not fully destroyed!' %
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(onodes[0]))
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def test_reconstruct_from_reverted_fragment_archive(self):
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headers = {'X-Storage-Policy': self.policy.name}
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client.put_container(self.url, self.token, self.container_name,
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headers=headers)
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# get our node lists
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opart, onodes = self.object_ring.get_nodes(
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self.account, self.container_name, self.object_name)
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# find a primary server that only has one of it's devices in the
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# primary node list
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group_nodes_by_config = defaultdict(list)
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for n in onodes:
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group_nodes_by_config[self.config_number(n)].append(n)
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for config_number, node_list in group_nodes_by_config.items():
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if len(node_list) == 1:
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break
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else:
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self.fail('ring balancing did not use all available nodes')
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primary_node = node_list[0]
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# ... and 507 it's device
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primary_device = self.device_dir(primary_node)
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self.kill_drive(primary_device)
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# PUT object
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contents = Body()
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etag = client.put_object(self.url, self.token, self.container_name,
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self.object_name, contents=contents)
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self.assertEqual(contents.etag, etag)
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# fix the primary device and sanity GET
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self.revive_drive(primary_device)
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self.assertEqual(etag, self.proxy_get())
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# find a handoff holding the fragment
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for hnode in self.object_ring.get_more_nodes(opart):
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try:
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reverted_fragment_etag = self.direct_get(hnode, opart)
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except direct_client.DirectClientException as err:
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if err.http_status != 404:
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raise
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else:
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break
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else:
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self.fail('Unable to find handoff fragment!')
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# we'll force the handoff device to revert instead of potentially
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# racing with rebuild by deleting any other fragments that may be on
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# the same server
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handoff_fragment_etag = None
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for node in onodes:
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if self.is_local_to(node, hnode):
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# we'll keep track of the etag of this fragment we're removing
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# in case we need it later (queue forshadowing music)...
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try:
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handoff_fragment_etag = self.direct_get(node, opart)
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except direct_client.DirectClientException as err:
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if err.http_status != 404:
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raise
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# this just means our handoff device was on the same
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# machine as the primary!
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continue
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# use the primary nodes device - not the hnode device
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part_dir = self.storage_dir(node, part=opart)
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shutil.rmtree(part_dir, True)
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# revert from handoff device with reconstructor
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self.reconstructor.once(number=self.config_number(hnode))
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# verify fragment reverted to primary server
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self.assertEqual(reverted_fragment_etag,
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self.direct_get(primary_node, opart))
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# now we'll remove some data on one of the primary node's partners
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partner = random.choice(reconstructor._get_partners(
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primary_node['index'], onodes))
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try:
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rebuilt_fragment_etag = self.direct_get(partner, opart)
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except direct_client.DirectClientException as err:
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if err.http_status != 404:
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raise
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# partner already had it's fragment removed
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if (handoff_fragment_etag is not None and
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self.is_local_to(hnode, partner)):
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# oh, well that makes sense then...
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rebuilt_fragment_etag = handoff_fragment_etag
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else:
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# I wonder what happened?
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self.fail('Partner inexplicably missing fragment!')
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part_dir = self.storage_dir(partner, part=opart)
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shutil.rmtree(part_dir, True)
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# sanity, it's gone
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try:
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self.direct_get(partner, opart)
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except direct_client.DirectClientException as err:
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if err.http_status != 404:
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raise
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else:
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self.fail('successful GET of removed partner fragment archive!?')
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# and force the primary node to do a rebuild
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self.reconstructor.once(number=self.config_number(primary_node))
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# and validate the partners rebuilt_fragment_etag
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try:
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self.assertEqual(rebuilt_fragment_etag,
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self.direct_get(partner, opart))
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except direct_client.DirectClientException as err:
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if err.http_status != 404:
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raise
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else:
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self.fail('Did not find rebuilt fragment on partner node')
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if __name__ == "__main__":
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unittest.main()
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