diff options
| -rw-r--r-- | __init__.py | 131 | ||||
| -rw-r--r-- | backends/openstack.py | 124 | ||||
| -rw-r--r-- | tests/__init__.py | 6 |
3 files changed, 134 insertions, 127 deletions
diff --git a/__init__.py b/__init__.py index b7082e53..7f742a89 100644 --- a/__init__.py +++ b/__init__.py @@ -41,3 +41,134 @@ class GPGWrapper(): def import_keys(self, data): return self.gpg.import_keys(data) + + +#---------------------------------------------------------------------------- +# u1db Transaction and Sync logs as JSON structures. +#---------------------------------------------------------------------------- + +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): + """ + An ordered 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): + """ + Return a list of documents that have changed since 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)) + 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)) - diff --git a/tests/__init__.py b/tests/__init__.py index 8e0a5c52..b6585755 100644 --- a/tests/__init__.py +++ b/tests/__init__.py @@ -7,13 +7,13 @@ import unittest import os import u1db -from soledad import GPGWrapper -from soledad.backends import leap -from soledad.backends.openstack import ( +from soledad import ( + GPGWrapper, SimpleLog, TransactionLog, SyncLog, ) +from soledad.backends import leap class EncryptedSyncTestCase(unittest.TestCase): |