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# Copyright (c) 2010-2016 OpenStack Foundation
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from unittest import main
from uuid import uuid4
from swiftclient import client, ClientException
from test.probe.common import kill_server, ReplProbeTest, start_server
from swift.common import direct_client, utils
from swift.common.manager import Manager
class TestDbUsyncReplicator(ReplProbeTest):
object_puts = 1 # Overridden in subclass to force rsync
def test_metadata_sync(self):
# Create container
container = 'container-%s' % uuid4()
client.put_container(self.url, self.token, container,
headers={'X-Storage-Policy': self.policy.name,
'X-Container-Meta-A': '1',
'X-Container-Meta-B': '1',
'X-Container-Meta-C': '1'})
cpart, cnodes = self.container_ring.get_nodes(self.account, container)
cnode = cnodes.pop()
# 2 of 3 container servers are temporarily down
for node in cnodes:
kill_server((node['ip'], node['port']),
self.ipport2server)
# Put some meta on the lone server, to make sure it's merged properly
# This will 503 (since we don't have a quorum), but we don't care (!)
try:
client.post_container(self.url, self.token, container,
headers={'X-Container-Meta-A': '2',
'X-Container-Meta-B': '2',
'X-Container-Meta-D': '2'})
except ClientException:
pass
# object updates come to only one container server
for _ in range(self.object_puts):
obj = 'object-%s' % uuid4()
client.put_object(self.url, self.token, container, obj, 'VERIFY')
# 2 container servers make comeback
for node in cnodes:
start_server((node['ip'], node['port']),
self.ipport2server)
# But, container-server which got object updates is down
kill_server((cnode['ip'], cnode['port']),
self.ipport2server)
# Metadata update will be applied to 2 container servers
# (equal to quorum)
client.post_container(self.url, self.token, container,
headers={'X-Container-Meta-B': '3',
'X-Container-Meta-E': '3'})
# container-server which got object updates makes comeback
start_server((cnode['ip'], cnode['port']),
self.ipport2server)
# other nodes have no objects
for node in cnodes:
resp_headers = direct_client.direct_head_container(
node, cpart, self.account, container)
self.assertIn(resp_headers.get('x-container-object-count'),
(None, '0', 0))
# If container-replicator on the node which got the object updates
# runs in first, db file may be replicated by rsync to other
# containers. In that case, the db file does not information about
# metadata, so metadata should be synced before replication
Manager(['container-replicator']).once(
number=self.config_number(cnode))
expected_meta = {
'x-container-meta-a': '2',
'x-container-meta-b': '3',
'x-container-meta-c': '1',
'x-container-meta-d': '2',
'x-container-meta-e': '3',
}
# node that got the object updates now has the meta
resp_headers = direct_client.direct_head_container(
cnode, cpart, self.account, container)
for header, value in expected_meta.items():
self.assertIn(header, resp_headers)
self.assertEqual(value, resp_headers[header])
self.assertNotIn(resp_headers.get('x-container-object-count'),
(None, '0', 0))
# other nodes still have the meta, as well as objects
for node in cnodes:
resp_headers = direct_client.direct_head_container(
node, cpart, self.account, container)
for header, value in expected_meta.items():
self.assertIn(header, resp_headers)
self.assertEqual(value, resp_headers[header])
self.assertNotIn(resp_headers.get('x-container-object-count'),
(None, '0', 0))
# and after full pass on remaining nodes
for node in cnodes:
Manager(['container-replicator']).once(
number=self.config_number(node))
# ... all is right
for node in cnodes + [cnode]:
resp_headers = direct_client.direct_head_container(
node, cpart, self.account, container)
for header, value in expected_meta.items():
self.assertIn(header, resp_headers)
self.assertEqual(value, resp_headers[header])
self.assertNotIn(resp_headers.get('x-container-object-count'),
(None, '0', 0))
class TestDbRsyncReplicator(TestDbUsyncReplicator):
def setUp(self):
super(TestDbRsyncReplicator, self).setUp()
cont_configs = [utils.readconf(p, 'container-replicator')
for p in self.configs['container-replicator'].values()]
# Do more than per_diff object PUTs, to force rsync instead of usync
self.object_puts = 1 + max(int(c.get('per_diff', '1000'))
for c in cont_configs)
if __name__ == '__main__':
main()
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