# Copyright (c) 2010 OpenStack, LLC.
#
# 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.
import unittest
from contextlib import contextmanager
import os
import logging
from swift.common import db_replicator
from swift.common import db, utils
from swift.container import server as container_server
def teardown_module():
"clean up my monkey patching"
reload(db_replicator)
@contextmanager
def lock_parent_directory(filename):
yield True
class FakeRing:
class Ring:
devs = []
def __init__(self, path):
pass
def get_part_nodes(self, part):
return []
def get_more_nodes(self, *args):
return []
class FakeProcess:
def __init__(self, *codes):
self.codes = iter(codes)
def __call__(self, *args, **kwargs):
class Failure:
def communicate(innerself):
next = self.codes.next()
if isinstance(next, int):
innerself.returncode = next
return next
raise next
return Failure()
@contextmanager
def _mock_process(*args):
orig_process = db_replicator.subprocess.Popen
db_replicator.subprocess.Popen = FakeProcess(*args)
yield
db_replicator.subprocess.Popen = orig_process
class PostReplHttp:
def __init__(self, response=None):
self.response = response
posted = False
host = 'localhost'
def post(self, *args):
self.posted = True
class Response:
status = 200
data = self.response
def read(innerself):
return self.response
return Response()
class ChangingMtimesOs:
def __init__(self):
self.mtime = 0
self.path = self
self.basename = os.path.basename
def getmtime(self, file):
self.mtime += 1
return self.mtime
class FakeBroker:
db_file = __file__
def __init__(self, *args, **kwargs):
return None
@contextmanager
def lock(self):
yield True
def get_sync(self, *args, **kwargs):
return 5
def get_syncs(self):
return []
def get_items_since(self, point, *args):
if point == 0:
return [{'ROWID': 1}]
return []
def merge_syncs(self, *args, **kwargs):
self.args = args
def merge_items(self, *args):
self.args = args
def get_replication_info(self):
return {'delete_timestamp': 0, 'put_timestamp': 1, 'count': 0}
def reclaim(self, item_timestamp, sync_timestamp):
pass
db_replicator.ring = FakeRing()
class TestReplicator(db_replicator.Replicator):
server_type = 'container'
ring_file = 'container.ring.gz'
brokerclass = FakeBroker
datadir = container_server.DATADIR
default_port = 1000
class TestDBReplicator(unittest.TestCase):
def test_repl_connection(self):
node = {'ip': '127.0.0.1', 'port': 80, 'device': 'sdb1'}
conn = db_replicator.ReplConnection(node, '1234567890', 'abcdefg',
logging.getLogger())
def req(method, path, body, headers):
self.assertEquals(method, 'POST')
self.assertEquals(headers['Content-Type'], 'application/json')
class Resp:
def read(self): return 'data'
resp = Resp()
conn.request = req
conn.getresponse = lambda *args: resp
self.assertEquals(conn.post(1, 2, 3), resp)
def other_req(method, path, body, headers):
raise Exception('blah')
conn.request = other_req
self.assertEquals(conn.post(1, 2, 3), None)
def test_rsync_file(self):
replicator = TestReplicator({}, {})
with _mock_process(-1):
fake_device = {'ip': '127.0.0.1', 'device': 'sda1'}
self.assertEquals(False,
replicator._rsync_file('/some/file', 'remote:/some/file'))
with _mock_process(0):
fake_device = {'ip': '127.0.0.1', 'device': 'sda1'}
self.assertEquals(True,
replicator._rsync_file('/some/file', 'remote:/some/file'))
def test_rsync_db(self):
replicator = TestReplicator({}, {})
replicator._rsync_file = lambda *args: True
fake_device = {'ip': '127.0.0.1', 'device': 'sda1'}
replicator._rsync_db(FakeBroker(), fake_device, PostReplHttp(), 'abcd')
def test_in_sync(self):
replicator = TestReplicator({}, {})
self.assertEquals(replicator._in_sync(
{'id': 'a', 'point': -1, 'max_row': 0, 'hash': 'b'},
{'id': 'a', 'point': -1, 'max_row': 0, 'hash': 'b'},
FakeBroker(), -1), True)
self.assertEquals(replicator._in_sync(
{'id': 'a', 'point': -1, 'max_row': 0, 'hash': 'b'},
{'id': 'a', 'point': -1, 'max_row': 10, 'hash': 'b'},
FakeBroker(), -1), True)
self.assertEquals(bool(replicator._in_sync(
{'id': 'a', 'point': -1, 'max_row': 0, 'hash': 'c'},
{'id': 'a', 'point': -1, 'max_row': 10, 'hash': 'd'},
FakeBroker(), -1)), False)
def test_replicate_once(self):
replicator = TestReplicator({}, {})
replicator.replicate_once()
def test_usync(self):
fake_http = PostReplHttp()
replicator = TestReplicator({}, {})
replicator._usync_db(0, FakeBroker(), fake_http, '12345', '67890')
def test_repl_to_node(self):
replicator = TestReplicator({}, {})
fake_node = {'ip': '127.0.0.1', 'device': 'sda1', 'port': 1000}
fake_info = {'id': 'a', 'point': -1, 'max_row': 0, 'hash': 'b',
'created_at': 100, 'put_timestamp': 0,
'delete_timestamp': 0}
replicator._http_connect = lambda *args: PostReplHttp('{"id": 3, "point": -1}')
self.assertEquals(replicator._repl_to_node(
fake_node, FakeBroker(), '0', fake_info), True)
def test_stats(self):
# I'm not sure how to test that this logs the right thing,
# but we can at least make sure it gets covered.
replicator = TestReplicator({}, {})
replicator._zero_stats()
replicator._report_stats()
def test_replicate_object(self):
db_replicator.lock_parent_directory = lock_parent_directory
replicator = TestReplicator({}, {})
replicator._replicate_object('0', 'file', 'node_id')
# def test_dispatch(self):
# rpc = db_replicator.ReplicatorRpc('/', '/', FakeBroker, False)
# no_op = lambda *args, **kwargs: True
# self.assertEquals(rpc.dispatch(('drv', 'part', 'hash'), ('op',)
# ).status_int, 400)
# rpc.mount_check = True
# self.assertEquals(rpc.dispatch(('drv', 'part', 'hash'), ['op',]
# ).status_int, 507)
# rpc.mount_check = False
# rpc.rsync_then_merge = lambda drive, db_file, args: self.assertEquals(args, ['test1'])
# rpc.complete_rsync = lambda drive, db_file, args: self.assertEquals(args, ['test2'])
# rpc.dispatch(('drv', 'part', 'hash'), ['rsync_then_merge','test1'])
# rpc.dispatch(('drv', 'part', 'hash'), ['complete_rsync','test2'])
# rpc.dispatch(('drv', 'part', 'hash'), ['other_op',])
def test_rsync_then_merge(self):
rpc = db_replicator.ReplicatorRpc('/', '/', FakeBroker, False)
rpc.rsync_then_merge('sda1', '/srv/swift/blah', ('a', 'b'))
def test_merge_items(self):
rpc = db_replicator.ReplicatorRpc('/', '/', FakeBroker, False)
fake_broker = FakeBroker()
args = ('a', 'b')
rpc.merge_items(fake_broker, args)
self.assertEquals(fake_broker.args, args)
def test_merge_syncs(self):
rpc = db_replicator.ReplicatorRpc('/', '/', FakeBroker, False)
fake_broker = FakeBroker()
args = ('a', 'b')
rpc.merge_syncs(fake_broker, args)
self.assertEquals(fake_broker.args, (args[0],))
if __name__ == '__main__':
unittest.main()