7be7cc966b
When you've got a container server that's struggling to respond to HEAD requests, it's really not helpful to keep evicting the cache when some of the hundreds of concurrent requests trying to repopulate the cache return 503. Change-Id: I49174a21a854a4e8e564a7bbf997e1841f9dda71 Closes-Bug: #1883211
216 lines
8.7 KiB
Python
216 lines
8.7 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 os import listdir
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from os.path import join as path_join
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from unittest import main
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from uuid import uuid4
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from eventlet import GreenPool, Timeout
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import eventlet
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from sqlite3 import connect
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from swiftclient import client
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from swift.common import direct_client
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from swift.common.exceptions import ClientException
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from swift.common.utils import hash_path, readconf
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from test.probe.common import kill_nonprimary_server, \
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kill_server, ReplProbeTest, start_server
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eventlet.monkey_patch(all=False, socket=True)
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def get_db_file_path(obj_dir):
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files = sorted(listdir(obj_dir), reverse=True)
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for filename in files:
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if filename.endswith('db'):
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return path_join(obj_dir, filename)
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class TestContainerFailures(ReplProbeTest):
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def test_one_node_fails(self):
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# Create container1
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container1 = 'container-%s' % uuid4()
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cpart, cnodes = self.container_ring.get_nodes(self.account, container1)
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client.put_container(self.url, self.token, container1)
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# Kill container1 servers excepting two of the primaries
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kill_nonprimary_server(cnodes, self.ipport2server)
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kill_server((cnodes[0]['ip'], cnodes[0]['port']), self.ipport2server)
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# Delete container1
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client.delete_container(self.url, self.token, container1)
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# Restart other container1 primary server
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start_server((cnodes[0]['ip'], cnodes[0]['port']), self.ipport2server)
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# Create container1/object1 (allowed because at least server thinks the
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# container exists)
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client.put_object(self.url, self.token, container1, 'object1', '123')
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# Get to a final state
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self.get_to_final_state()
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# Assert all container1 servers indicate container1 is alive and
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# well with object1
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for cnode in cnodes:
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self.assertEqual(
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[o['name'] for o in direct_client.direct_get_container(
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cnode, cpart, self.account, container1)[1]],
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['object1'])
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# Assert account level also indicates container1 is alive and
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# well with object1
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headers, containers = client.get_account(self.url, self.token)
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self.assertEqual(headers['x-account-container-count'], '1')
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self.assertEqual(headers['x-account-object-count'], '1')
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self.assertEqual(headers['x-account-bytes-used'], '3')
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def test_two_nodes_fail(self):
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# Create container1
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container1 = 'container-%s' % uuid4()
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cpart, cnodes = self.container_ring.get_nodes(self.account, container1)
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client.put_container(self.url, self.token, container1)
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# Kill container1 servers excepting one of the primaries
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cnp_ipport = kill_nonprimary_server(cnodes, self.ipport2server)
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kill_server((cnodes[0]['ip'], cnodes[0]['port']),
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self.ipport2server)
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kill_server((cnodes[1]['ip'], cnodes[1]['port']),
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self.ipport2server)
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# Delete container1 directly to the one primary still up
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direct_client.direct_delete_container(cnodes[2], cpart, self.account,
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container1)
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# Restart other container1 servers
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start_server((cnodes[0]['ip'], cnodes[0]['port']),
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self.ipport2server)
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start_server((cnodes[1]['ip'], cnodes[1]['port']),
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self.ipport2server)
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start_server(cnp_ipport, self.ipport2server)
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# Get to a final state
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self.get_to_final_state()
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# Assert all container1 servers indicate container1 is gone (happens
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# because the one node that knew about the delete replicated to the
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# others.)
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for cnode in cnodes:
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try:
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direct_client.direct_get_container(cnode, cpart, self.account,
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container1)
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except ClientException as err:
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self.assertEqual(err.http_status, 404)
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else:
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self.fail("Expected ClientException but didn't get it")
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# Assert account level also indicates container1 is gone
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headers, containers = client.get_account(self.url, self.token)
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self.assertEqual(headers['x-account-container-count'], '0')
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self.assertEqual(headers['x-account-object-count'], '0')
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self.assertEqual(headers['x-account-bytes-used'], '0')
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def test_all_nodes_fail(self):
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# Create container1
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container1 = 'container-%s' % uuid4()
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cpart, cnodes = self.container_ring.get_nodes(self.account, container1)
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client.put_container(self.url, self.token, container1)
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client.put_object(self.url, self.token, container1, 'obj1', 'data1')
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# All primaries go down
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for cnode in cnodes:
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kill_server((cnode['ip'], cnode['port']), self.ipport2server)
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# Can't GET the container
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with self.assertRaises(client.ClientException) as caught:
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client.get_container(self.url, self.token, container1)
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self.assertEqual(caught.exception.http_status, 503)
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# But we can still write objects! The old info is still in memcache
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client.put_object(self.url, self.token, container1, 'obj2', 'data2')
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# Can't POST the container, either
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with self.assertRaises(client.ClientException) as caught:
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client.post_container(self.url, self.token, container1, {})
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self.assertEqual(caught.exception.http_status, 503)
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# Though it *does* evict the cache
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with self.assertRaises(client.ClientException) as caught:
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client.put_object(self.url, self.token, container1, 'obj3', 'x')
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self.assertEqual(caught.exception.http_status, 503)
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def _get_container_db_files(self, container):
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opart, onodes = self.container_ring.get_nodes(self.account, container)
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onode = onodes[0]
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db_files = []
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for onode in onodes:
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node_id = (onode['port'] - 6000) // 10
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device = onode['device']
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hash_str = hash_path(self.account, container)
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server_conf = readconf(self.configs['container-server'][node_id])
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devices = server_conf['app:container-server']['devices']
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obj_dir = '%s/%s/containers/%s/%s/%s/' % (devices,
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device, opart,
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hash_str[-3:], hash_str)
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db_files.append(get_db_file_path(obj_dir))
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return db_files
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def test_locked_container_dbs(self):
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def run_test(num_locks, catch_503):
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container = 'container-%s' % uuid4()
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client.put_container(self.url, self.token, container)
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# Get the container info into memcache (so no stray
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# get_container_info calls muck up our timings)
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client.get_container(self.url, self.token, container)
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db_files = self._get_container_db_files(container)
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db_conns = []
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for i in range(num_locks):
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db_conn = connect(db_files[i])
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db_conn.execute('begin exclusive transaction')
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db_conns.append(db_conn)
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if catch_503:
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try:
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client.delete_container(self.url, self.token, container)
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except client.ClientException as err:
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self.assertEqual(err.http_status, 503)
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else:
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self.fail("Expected ClientException but didn't get it")
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else:
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client.delete_container(self.url, self.token, container)
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proxy_conf = readconf(self.configs['proxy-server'],
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section_name='app:proxy-server')
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node_timeout = int(proxy_conf.get('node_timeout', 10))
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pool = GreenPool()
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try:
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with Timeout(node_timeout + 5):
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pool.spawn(run_test, 1, False)
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pool.spawn(run_test, 2, True)
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pool.spawn(run_test, 3, True)
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pool.waitall()
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except Timeout as err:
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raise Exception(
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"The server did not return a 503 on container db locks, "
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"it just hangs: %s" % err)
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if __name__ == '__main__':
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main()
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