def test_repr(self):
lock = volume.VolumeLease(HOST_ID, 'dom', 'img', 'vol')
lock_string = str(lock)
self.assertIn("VolumeLease", lock_string)
self.assertIn("ns=04_lease_dom", lock_string)
self.assertIn("name=vol", lock_string)
self.assertIn("mode=exclusive", lock_string)
self.assertIn("%x" % id(lock), lock_string)
def expected_locks(self, subchain):
img_ns = rm.getNamespace(sc.IMAGE_NAMESPACE, subchain.sd_id)
return [
rm.ResourceManagerLock(sc.STORAGE, subchain.sd_id, rm.SHARED),
rm.ResourceManagerLock(img_ns, subchain.img_id, rm.EXCLUSIVE),
volume.VolumeLease(subchain.host_id, subchain.sd_id,
subchain.img_id, subchain.base_id)
]
def test_repr(self):
lock = volume.VolumeLease(HOST_ID, 'dom', 'img', 'vol')
lock_string = str(lock)
assert "VolumeLease" in lock_string
assert "ns=04_lease_dom" in lock_string
assert "name=vol" in lock_string
assert "mode=exclusive" in lock_string
assert "%x" % id(lock) in lock_string
def locks(self):
img_ns = rm.getNamespace(sc.IMAGE_NAMESPACE, self.sd_id)
ret = [rm.ResourceManagerLock(sc.STORAGE, self.sd_id, rm.SHARED),
rm.ResourceManagerLock(img_ns, self.img_id, rm.EXCLUSIVE)]
dom = sdCache.produce_manifest(self.sd_id)
if dom.hasVolumeLeases():
ret.append(volume.VolumeLease(self._host_id, self.sd_id,
self.img_id, self.vol_id))
return ret
def locks(self):
img_ns = rm.getNamespace(sc.IMAGE_NAMESPACE, self.sd_id)
ret = [rm.ResourceManagerLock(sc.STORAGE, self.sd_id, rm.SHARED),
rm.ResourceManagerLock(img_ns, self.img_id, rm.EXCLUSIVE)]
dom = sdCache.produce_manifest(self.sd_id)
if dom.hasVolumeLeases():
# We take only the base lease since no other volumes are modified
ret.append(volume.VolumeLease(self.host_id, self.sd_id,
self.img_id, self.base_id))
return ret
def locks(self):
img_ns = rm.getNamespace(sc.IMAGE_NAMESPACE, self.sd_id)
mode = rm.EXCLUSIVE if self._writable else rm.SHARED
ret = [rm.Lock(sc.STORAGE, self.sd_id, rm.SHARED),
rm.Lock(img_ns, self.img_id, mode)]
if self._writable:
dom = sdCache.produce_manifest(self.sd_id)
if dom.hasVolumeLeases():
ret.append(volume.VolumeLease(self._host_id, self.sd_id,
self.img_id, self.vol_id))
return ret
def expected_locks(self, base_vol):
img_ns = rm.getNamespace(sc.IMAGE_NAMESPACE, base_vol.sdUUID)
ret = [
# Domain lock
rm.ResourceManagerLock(sc.STORAGE, base_vol.sdUUID, rm.SHARED),
# Image lock
rm.ResourceManagerLock(img_ns, base_vol.imgUUID, rm.EXCLUSIVE),
# Volume lease
volume.VolumeLease(
0, base_vol.sdUUID, base_vol.imgUUID, base_vol.volUUID)
]
return ret
def test_acquire_release(self):
sdcache = FakeStorageDomainCache()
manifest = FakeSDManifest()
sdcache.domains['dom'] = FakeSD(manifest)
expected = [('acquireVolumeLease', (HOST_ID, 'img', 'vol'), {}),
('releaseVolumeLease', ('img', 'vol'), {})]
with MonkeyPatchScope([(volume, 'sdCache', sdcache)]):
lock = volume.VolumeLease(HOST_ID, 'dom', 'img', 'vol')
lock.acquire()
self.assertEqual(expected[:1], manifest.__calls__)
lock.release()
self.assertEqual(expected, manifest.__calls__)
def test_acquire_release(self, monkeypatch):
sdcache = FakeStorageDomainCache()
manifest = FakeSDManifest()
sdcache.domains['dom'] = FakeSD(manifest)
expected = [('acquireVolumeLease', (HOST_ID, 'img', 'vol'), {}),
('releaseVolumeLease', ('img', 'vol'), {})]
monkeypatch.setattr(volume, 'sdCache', sdcache)
lock = volume.VolumeLease(HOST_ID, 'dom', 'img', 'vol')
lock.acquire()
assert expected[:1] == manifest.__calls__
lock.release()
assert expected == manifest.__calls__
def expected_locks(src_vol, dst_vol):
src_img_ns = rm.getNamespace(sc.IMAGE_NAMESPACE, src_vol.sdUUID)
dst_img_ns = rm.getNamespace(sc.IMAGE_NAMESPACE, dst_vol.sdUUID)
ret = [
# Domain lock for each volume
rm.Lock(sc.STORAGE, src_vol.sdUUID, rm.SHARED),
rm.Lock(sc.STORAGE, dst_vol.sdUUID, rm.SHARED),
# Image lock for each volume, exclusive for the destination
rm.Lock(src_img_ns, src_vol.imgUUID, rm.SHARED),
rm.Lock(dst_img_ns, dst_vol.imgUUID, rm.EXCLUSIVE),
# Volume lease for the destination volume
volume.VolumeLease(0, dst_vol.sdUUID, dst_vol.imgUUID, dst_vol.volUUID)
]
return ret
def locks(self):
# A shared lock is always required
ret = [rm.Lock(sc.STORAGE, self.sd_id, rm.SHARED)]
# An exclusive lock will be taken if source and destination images
# are not the same, otherwise there will be a deadlock.
if self.lock_image:
img_ns = rm.getNamespace(sc.IMAGE_NAMESPACE, self.sd_id)
mode = rm.EXCLUSIVE if self._writable else rm.SHARED
ret.append(rm.Lock(img_ns, self.img_id, mode))
if self._writable:
dom = sdCache.produce_manifest(self.sd_id)
if dom.hasVolumeLeases():
ret.append(
volume.VolumeLease(self._host_id, self.sd_id, self.img_id,
self.vol_id))
return ret
def test_equality_different_host_id(self):
a = volume.VolumeLease(0, 'dom', 'img', 'vol')
b = volume.VolumeLease(1, 'dom', 'img', 'vol')
self.assertEqual(a, b)
def test_equality_different_image(self):
a = volume.VolumeLease(HOST_ID, 'dom', 'img1', 'vol')
b = volume.VolumeLease(HOST_ID, 'dom', 'img2', 'vol')
self.assertEqual(a, b)
def test_equality(self):
a = volume.VolumeLease(HOST_ID, 'dom', 'img', 'vol')
b = volume.VolumeLease(HOST_ID, 'dom', 'img', 'vol')
self.assertEqual(a, b)
def test_less_than(self, a, b):
b = volume.VolumeLease(HOST_ID, *b)
a = volume.VolumeLease(HOST_ID, *a)
self.assertLess(a, b)
def test_properties(self):
a = volume.VolumeLease(HOST_ID, 'dom', 'img', 'vol')
self.assertEqual(rm.getNamespace(sc.VOLUME_LEASE_NAMESPACE, 'dom'),
a.ns)
self.assertEqual('vol', a.name)
self.assertEqual(rm.EXCLUSIVE, a.mode)
def test_equality(self):
a = volume.VolumeLease(HOST_ID, 'dom', 'img', 'vol')
b = volume.VolumeLease(HOST_ID, 'dom', 'img', 'vol')
assert a == b
def test_properties(self):
a = volume.VolumeLease(HOST_ID, 'dom', 'img', 'vol')
assert rm.getNamespace(sc.VOLUME_LEASE_NAMESPACE, 'dom') == a.ns
assert 'vol' == a.name
assert rm.EXCLUSIVE == a.mode