diff options
Diffstat (limited to 'backends')
| -rw-r--r-- | backends/openstack.py | 124 |
1 files changed, 0 insertions, 124 deletions
diff --git a/backends/openstack.py b/backends/openstack.py index ec4609b4..6c971485 100644 --- a/backends/openstack.py +++ b/backends/openstack.py @@ -32,8 +32,6 @@ class OpenStackDatabase(CommonBackend): def whats_changed(self, old_generation=0): self._get_u1db_data() - # This method is implemented in TransactionLog because testing is - # easier like this for now, but it can be moved to here afterwards. return self._transaction_log.whats_changed(old_generation) def _get_doc(self, doc_id, check_for_conflicts=False): @@ -245,125 +243,3 @@ class OpenStackSyncTarget(HTTPSyncTarget): source_replica_transaction_id) -class SimpleLog(object): - def __init__(self): - self._log = [] - - def _set_log(self, log): - self._log = log - - def _get_log(self): - return self._log - - log = property( - _get_log, _set_log, doc="Log contents.") - - def append(self, msg): - self._log.append(msg) - - def reduce(self, func, initializer=None): - return reduce(func, self.log, initializer) - - def map(self, func): - return map(func, self.log) - - def filter(self, func): - return filter(func, self.log) - - -class TransactionLog(SimpleLog): - """ - A list of (generation, doc_id, transaction_id) tuples. - """ - - def _set_log(self, log): - self._log = log - - def _get_log(self): - return sorted(self._log, reverse=True) - - log = property( - _get_log, _set_log, doc="Log contents.") - - def get_generation(self): - """ - Return the current generation. - """ - gens = self.map(lambda x: x[0]) - if not gens: - return 0 - return max(gens) - - def get_generation_info(self): - """ - Return the current generation and transaction id. - """ - if not self._log: - return(0, '') - info = self.map(lambda x: (x[0], x[2])) - return reduce(lambda x, y: x if (x[0] > y[0]) else y, info) - - def get_trans_id_for_gen(self, gen): - """ - Get the transaction id corresponding to a particular generation. - """ - log = self.reduce(lambda x, y: y if y[0] == gen else x) - if log is None: - return None - return log[2] - - def whats_changed(self, old_generation): - results = self.filter(lambda x: x[0] > old_generation) - seen = set() - changes = [] - newest_trans_id = '' - for generation, doc_id, trans_id in results: - if doc_id not in seen: - changes.append((doc_id, generation, trans_id)) - seen.add(doc_id) - if changes: - cur_gen = changes[0][1] # max generation - newest_trans_id = changes[0][2] - changes.reverse() - else: - results = self.log - if not results: - cur_gen = 0 - newest_trans_id = '' - else: - cur_gen, _, newest_trans_id = results[0] - - return cur_gen, newest_trans_id, changes - - - -class SyncLog(SimpleLog): - """ - A list of (replica_id, generation, transaction_id) tuples. - """ - - def find_by_replica_uid(self, replica_uid): - if not self.log: - return () - return self.reduce(lambda x, y: y if y[0] == replica_uid else x) - - def get_replica_gen_and_trans_id(self, other_replica_uid): - """ - Return the last known generation and transaction id for the other db - replica. - """ - info = self.find_by_replica_uid(other_replica_uid) - if not info: - return (0, '') - return (info[1], info[2]) - - def set_replica_gen_and_trans_id(self, other_replica_uid, - other_generation, other_transaction_id): - """ - Set the last-known generation and transaction id for the other - database replica. - """ - self.log = self.filter(lambda x: x[0] != other_replica_uid) - self.append((other_replica_uid, other_generation, - other_transaction_id)) - |