openstack/swift
Code Issues Proposed changes

ring: Centralize device normalization

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This puts replication info in antique rings loaded with metadata_only=True.

Closes-Bug: #1696837
Change-Id: Idf263a7f7a984a1307bd74040ac8f8bb1651bc79
This commit is contained in:
Tim Burke 2023-04-26 15:34:04 -07:00
parent 9f75279739
commit b8f0a0ed5c
2 changed files with 32 additions and 25 deletions
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41
swift/common/ring/ring.py
View File

@ -48,6 +48,23 @@ def calc_replica_count(replica2part2dev_id):
return base + extra
def normalize_devices(devs):
# NOTE(akscram): Replication parameters like replication_ip
# and replication_port are required for
# replication process. An old replication
# ring doesn't contain this parameters into
# device. Old-style pickled rings won't have
# region information.
for dev in devs:
if dev is None:
continue
dev.setdefault('region', 1)
if 'ip' in dev:
dev.setdefault('replication_ip', dev['ip'])
if 'port' in dev:
dev.setdefault('replication_port', dev['port'])
class RingReader(object):
chunk_size = 2 ** 16
@ -118,6 +135,7 @@ class RingData(object):
def __init__(self, replica2part2dev_id, devs, part_shift,
next_part_power=None, version=None):
normalize_devices(devs)
self.devs = devs
self._replica2part2dev_id = replica2part2dev_id
self._part_shift = part_shift
@ -125,10 +143,6 @@ class RingData(object):
self.version = version
self.md5 = self.size = self.raw_size = None
for dev in self.devs:
if dev is not None:
dev.setdefault("region", 1)
@property
def replica_count(self):
"""Number of replicas (full or partial) used in the ring."""
@ -194,7 +208,10 @@ class RingData(object):
gz_file.seek(0)
ring_data = pickle.load(gz_file)
if not hasattr(ring_data, 'devs'):
if hasattr(ring_data, 'devs'):
# pickled RingData; make sure we've got region/replication info
normalize_devices(ring_data.devs)
else:
ring_data = RingData(ring_data['replica2part2dev_id'],
ring_data['devs'], ring_data['part_shift'],
ring_data.get('next_part_power'),
@ -306,20 +323,6 @@ class Ring(object):
self._mtime = getmtime(self.serialized_path)
self._devs = ring_data.devs
# NOTE(akscram): Replication parameters like replication_ip
# and replication_port are required for
# replication process. An old replication
# ring doesn't contain this parameters into
# device. Old-style pickled rings won't have
# region information.
for dev in self._devs:
if dev:
dev.setdefault('region', 1)
if 'ip' in dev:
dev.setdefault('replication_ip', dev['ip'])
if 'port' in dev:
dev.setdefault('replication_port', dev['port'])
self._replica2part2dev_id = ring_data._replica2part2dev_id
self._part_shift = ring_data._part_shift
self._rebuild_tier_data()

16
test/unit/common/ring/test_ring.py
View File

@ -68,8 +68,10 @@ class TestRingData(unittest.TestCase):
def test_attrs(self):
r2p2d = [[0, 1, 0, 1], [0, 1, 0, 1]]
d = [{'id': 0, 'zone': 0, 'region': 0, 'ip': '10.1.1.0', 'port': 7000},
{'id': 1, 'zone': 1, 'region': 1, 'ip': '10.1.1.1', 'port': 7000}]
d = [{'id': 0, 'zone': 0, 'region': 0, 'ip': '10.1.1.0', 'port': 7000,
'replication_ip': '10.1.1.0', 'replication_port': 7000},
{'id': 1, 'zone': 1, 'region': 1, 'ip': '10.1.1.1', 'port': 7000,
'replication_ip': '10.1.1.1', 'replication_port': 7000}]
s = 30
rd = ring.RingData(r2p2d, d, s)
self.assertEqual(rd._replica2part2dev_id, r2p2d)
@ -88,10 +90,12 @@ class TestRingData(unittest.TestCase):
pickle.dump(rd, f, protocol=p)
meta_only = ring.RingData.load(ring_fname, metadata_only=True)
self.assertEqual([
{'id': 0, 'zone': 0, 'region': 1, 'ip': '10.1.1.0',
'port': 7000},
{'id': 1, 'zone': 1, 'region': 1, 'ip': '10.1.1.1',
'port': 7000},
{'id': 0, 'zone': 0, 'region': 1,
'ip': '10.1.1.0', 'port': 7000,
'replication_ip': '10.1.1.0', 'replication_port': 7000},
{'id': 1, 'zone': 1, 'region': 1,
'ip': '10.1.1.1', 'port': 7000,
'replication_ip': '10.1.1.1', 'replication_port': 7000},
], meta_only.devs)
# Pickled rings can't load only metadata, so you get it all
self.assert_ring_data_equal(rd, meta_only)