def handle_conflict(key, action_1, client_1, action_2, client_2):
print(
"\n"
'Conflict for "{}". Which version would you like to keep?\n'
" (1) {}{} updated at {} ({})\n"
" (2) {}{} updated at {} ({})\n"
" (d) View difference (requires the diff command)\n"
" (X) Skip this file\n".format(
key,
client_1.get_uri(),
key,
action_1.get_remote_datetime(),
action_1.state,
client_2.get_uri(),
key,
action_2.get_remote_datetime(),
action_2.state,
),
file=sys.stderr,
)
while True:
choice = utils.get_input("Choice (default=skip): ")
print("", file=sys.stderr)
if choice == "d":
show_diff(client_1, client_2, key)
else:
break
if choice == "1":
return Resolution.get_resolution(key, action_1, client_2, client_1)
elif choice == "2":
return Resolution.get_resolution(key, action_2, client_1, client_2)
def test_repr(self):
s3_client = s3.S3SyncClient(None, 'mortybucket', 'dimensional/portals')
local_client = local.LocalSyncClient('/home/picklerick')
resolution = Resolution(Resolution.CREATE, s3_client, local_client,
'foo', 20023)
expected_repr = ("Resolution<action=CREATE, "
"to=s3://mortybucket/dimensional/portals/, "
"from=/home/picklerick/, "
"key=foo, timestamp=20023>")
assert repr(resolution) == expected_repr
def sync(self, conflict_choice=None, keys=None, dry_run=False):
self.client_1.lock()
self.client_2.lock()
try:
resolutions, unhandled_events = self.get_sync_states(keys)
self.logger.debug(
'There are %s unhandled events for the user to solve', len(unhandled_events)
)
self.logger.debug(
'There are %s automatically resolved calls', len(resolutions)
)
for key in sorted(unhandled_events.keys()):
action_1, action_2 = unhandled_events[key]
if conflict_choice == '1':
resolutions[key] = Resolution.get_resolution(
key, action_1, self.client_2, self.client_1
)
elif conflict_choice == '2':
resolutions[key] = Resolution.get_resolution(
key, action_2, self.client_1, self.client_2
)
if self.conflict_handler is not None:
resolution = self.conflict_handler(
key, action_1, self.client_1, action_2, self.client_2
)
if resolution is not None:
resolutions[key] = resolution
else:
self.logger.info('Ignoring sync conflict for %s', key)
else:
self.logger.info('Unable to resolve conflict for %s', key)
self.run_resolutions(resolutions, dry_run)
except KeyboardInterrupt:
self.logger.warning('Session interrupted by Keyboard Interrupt. Aborting....')
finally:
self.client_1.unlock()
self.client_2.unlock()
def test_get_resolution_updated(self, state, action, s3_client,
local_client):
sync_state = SyncState(state, 1234, 4567)
resolution = Resolution.get_resolution('foo/bar', sync_state,
s3_client, local_client)
assert resolution.action == action
assert resolution.to_client == s3_client
assert resolution.key == 'foo/bar'
if state != SyncState.DELETED:
assert resolution.timestamp == 1234
assert resolution.from_client == local_client
else:
assert resolution.timestamp == 4567
assert resolution.from_client is None
def sync(self, conflict_choice=None, keys=None, dry_run=False):
self.client_1.lock()
self.client_2.lock()
try:
resolutions, unhandled_events = self.get_sync_states(keys)
self.logger.debug(
"There are %s unhandled events for the user to solve",
len(unhandled_events),
)
self.logger.debug("There are %s automatically resolved calls",
len(resolutions))
for key in sorted(unhandled_events.keys()):
action_1, action_2 = unhandled_events[key]
if conflict_choice == "1":
resolutions[key] = Resolution.get_resolution(
key, action_1, self.client_2, self.client_1)
elif conflict_choice == "2":
resolutions[key] = Resolution.get_resolution(
key, action_2, self.client_1, self.client_2)
if self.conflict_handler is not None:
resolution = self.conflict_handler(key, action_1,
self.client_1, action_2,
self.client_2)
if resolution is not None:
resolutions[key] = resolution
else:
self.logger.info("Ignoring sync conflict for %s", key)
else:
self.logger.info("Unable to resolve conflict for %s", key)
self.run_resolutions(resolutions, dry_run)
finally:
self.client_1.unlock()
self.client_2.unlock()
def get_sync_states(self, keys=None):
# we store a list of resolutions to make sure we can handle everything before
# running any updates on the file system and indexes
resolutions = {}
# list of unhandled events which cannot be solved automatically (or alternatively the
# the automated solution has not yet been implemented)
unhandled_events = {}
self.logger.debug("Generating deferred calls based on client states")
for key, state_1, state_2 in self.get_states(keys):
self.logger.debug("%s: %s %s", key, state_1, state_2)
if (state_1.state == SyncState.NOCHANGES
and state_2.state == SyncState.NOCHANGES):
if state_1.remote_timestamp == state_2.remote_timestamp:
continue
elif state_1.remote_timestamp > state_2.remote_timestamp:
resolutions[key] = Resolution(
Resolution.UPDATE,
self.client_2,
self.client_1,
key,
state_1.remote_timestamp,
)
elif state_2.remote_timestamp > state_1.remote_timestamp:
resolutions[key] = Resolution(
Resolution.UPDATE,
self.client_1,
self.client_2,
key,
state_2.remote_timestamp,
)
elif (state_1.state == SyncState.CREATED
and state_2.state == SyncState.DOESNOTEXIST):
resolutions[key] = Resolution(
Resolution.CREATE,
self.client_2,
self.client_1,
key,
state_1.local_timestamp,
)
elif (state_2.state == SyncState.CREATED
and state_1.state == SyncState.DOESNOTEXIST):
resolutions[key] = Resolution(
Resolution.CREATE,
self.client_1,
self.client_2,
key,
state_2.local_timestamp,
)
elif (state_1.state == SyncState.NOCHANGES
and state_2.state == SyncState.DOESNOTEXIST):
resolutions[key] = Resolution(
Resolution.CREATE,
self.client_2,
self.client_1,
key,
state_1.remote_timestamp,
)
elif (state_2.state == SyncState.NOCHANGES
and state_1.state == SyncState.DOESNOTEXIST):
resolutions[key] = Resolution(
Resolution.CREATE,
self.client_1,
self.client_2,
key,
state_2.remote_timestamp,
)
elif (state_1.state == SyncState.UPDATED
and state_2.state == SyncState.DOESNOTEXIST):
resolutions[key] = Resolution(
Resolution.CREATE,
self.client_2,
self.client_1,
key,
state_1.local_timestamp,
)
elif (state_2.state == SyncState.UPDATED
and state_1.state == SyncState.DOESNOTEXIST):
resolutions[key] = Resolution(
Resolution.CREATE,
self.client_2,
self.client_1,
key,
state_1.local_timestamp,
)
elif state_1.state in (
SyncState.DELETED,
SyncState.DOESNOTEXIST,
) and state_2.state in (SyncState.DELETED, SyncState.DOESNOTEXIST):
# nothing to do, they have already both been deleted/do not exist
continue
elif (state_1.state == SyncState.UPDATED
and state_2.state == SyncState.NOCHANGES
and state_1.remote_timestamp == state_2.remote_timestamp):
resolutions[key] = Resolution(
Resolution.UPDATE,
self.client_2,
self.client_1,
key,
state_1.local_timestamp,
)
elif (state_2.state == SyncState.UPDATED
and state_1.state == SyncState.NOCHANGES
and state_1.remote_timestamp == state_2.remote_timestamp):
resolutions[key] = Resolution(
Resolution.UPDATE,
self.client_1,
self.client_2,
key,
state_2.local_timestamp,
)
elif (state_1.state == SyncState.DELETED
and state_2.state == SyncState.NOCHANGES
and state_1.remote_timestamp == state_2.remote_timestamp):
resolutions[key] = Resolution(
Resolution.DELETE,
self.client_2,
None,
key,
state_1.remote_timestamp,
)
elif (state_2.state == SyncState.DELETED
and state_1.state == SyncState.NOCHANGES
and state_1.remote_timestamp == state_2.remote_timestamp):
resolutions[key] = Resolution(
Resolution.DELETE,
self.client_1,
None,
key,
state_2.remote_timestamp,
)
elif (state_1.state == SyncState.DELETED
and state_2.state == SyncState.CREATED
and state_1.remote_timestamp == state_2.remote_timestamp):
resolutions[key] = Resolution(
Resolution.CREATE,
self.client_1,
self.client_2,
key,
state_2.local_timestamp,
)
elif (state_2.state == SyncState.DELETED
and state_1.state == SyncState.CREATED
and state_1.remote_timestamp == state_2.remote_timestamp):
resolutions[key] = Resolution(
Resolution.CREATE,
self.client_2,
self.client_1,
key,
state_1.local_timestamp,
)
else:
unhandled_events[key] = (state_1, state_2)
self.logger.debug("Action=%s", resolutions.get(key))
return resolutions, unhandled_events
def test_equal_wrong_instance(self):
resolution = Resolution(Resolution.CREATE, None, None, 'bar', 23232)
assert resolution != "Not a Resolution"
def test_invalid_sync_state(self):
with pytest.raises(ValueError) as exc:
Resolution.get_resolution('', SyncState('Invalid', None, None),
None, None)
assert exc.value
def test_not_equal(self):
resolution_1 = Resolution(Resolution.UPDATE, None, None, 'fffff',
232323)
resolution_2 = Resolution(Resolution.DELETE, None, None, 'wew', 3823)
assert resolution_1 != resolution_2
def test_equal(self):
resolution_1 = Resolution(Resolution.UPDATE, None, None, 'fffff',
232323)
resolution_2 = Resolution(Resolution.UPDATE, None, None, 'fffff',
232323)
assert resolution_1 == resolution_2
def test_equal_to_self(self):
resolution = Resolution(Resolution.UPDATE, None, None, 'fffff', 232323)
assert resolution == resolution
def test_not_equal(self):
resolution_1 = Resolution(Resolution.UPDATE, None, None, "fffff",
232323)
resolution_2 = Resolution(Resolution.DELETE, None, None, "wew", 3823)
assert resolution_1 != resolution_2
