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-rw-r--r--backends/objectstore.py69
1 files changed, 59 insertions, 10 deletions
diff --git a/backends/objectstore.py b/backends/objectstore.py
index 54ffa9dd..cd051588 100644
--- a/backends/objectstore.py
+++ b/backends/objectstore.py
@@ -16,6 +16,7 @@ class ObjectStore(CommonBackend):
self.set_document_factory(Document)
self._sync_log = soledadutil.SyncLog()
self._transaction_log = soledadutil.TransactionLog()
+ self._conflict_log = soledadutil.ConflictLog()
self._replica_uid = replica_uid
self._ensure_u1db_data()
@@ -44,6 +45,12 @@ class ObjectStore(CommonBackend):
def _put_doc(self, doc):
raise NotImplementedError(self._put_doc)
+ def _update_gen_and_transaction_log(self, doc_id):
+ new_gen = self._get_generation() + 1
+ trans_id = self._allocate_transaction_id()
+ self._transaction_log.append((new_gen, doc_id, trans_id))
+ self._set_u1db_data()
+
def put_doc(self, doc):
# consistency check
if doc.doc_id is None:
@@ -66,11 +73,7 @@ class ObjectStore(CommonBackend):
new_rev = self._allocate_doc_rev(doc.rev)
doc.rev = new_rev
self._put_doc(doc)
- # update u1db generation and logs
- new_gen = self._get_generation() + 1
- trans_id = self._allocate_transaction_id()
- self._transaction_log.append((new_gen, doc.doc_id, trans_id))
- self._set_u1db_data()
+ self._update_gen_and_transaction_log(doc.doc_id)
return doc.rev
def delete_doc(self, doc):
@@ -87,6 +90,7 @@ class ObjectStore(CommonBackend):
doc.rev = new_rev
doc.make_tombstone()
self._put_doc(doc)
+ self._update_gen_and_transaction_log(doc.doc_id)
return new_rev
# start of index-related methods: these are not supported by this backend.
@@ -130,6 +134,16 @@ class ObjectStore(CommonBackend):
other_transaction_id)
self._set_u1db_data()
+ def _do_set_replica_gen_and_trans_id(self, other_replica_uid,
+ other_generation, other_transaction_id):
+ return self._set_replica_gen_and_trans_id(
+ other_replica_uid,
+ other_generation,
+ other_transaction_id)
+
+ def _get_transaction_log(self):
+ return self._transaction_log.get_transaction_log()
+
#-------------------------------------------------------------------------
# implemented methods from CommonBackend
#-------------------------------------------------------------------------
@@ -146,9 +160,10 @@ class ObjectStore(CommonBackend):
# Documents never have conflicts on server.
return False
- def _put_and_update_indexes(self, doc_id, old_doc, new_rev, content):
- raise NotImplementedError(self._put_and_update_indexes)
-
+ def _put_and_update_indexes(self, old_doc, doc):
+ # TODO: implement index update
+ self._put_doc(doc)
+ self._update_gen_and_transaction_log(doc.doc_id)
def _get_trans_id_for_gen(self, generation):
self._get_u1db_data()
@@ -187,8 +202,9 @@ class ObjectStore(CommonBackend):
if self._replica_uid is None:
self._replica_uid = uuid.uuid4().hex
doc = self._factory(doc_id=self.U1DB_DATA_DOC_ID)
- doc.content = { 'transaction_log' : [],
- 'sync_log' : [],
+ doc.content = { 'sync_log' : [],
+ 'transaction_log' : [],
+ 'conflict_log' : [],
'replica_uid' : self._replica_uid }
self._put_doc(doc)
@@ -213,3 +229,36 @@ class ObjectStore(CommonBackend):
replica_uid = property(
_get_replica_uid, _set_replica_uid, doc="Replica UID of the database")
+
+
+ #-------------------------------------------------------------------------
+ # The methods below were cloned from u1db sqlite backend. They should at
+ # least exist and raise a NotImplementedError exception in CommonBackend
+ # (should we maybe fill a bug in u1db bts?).
+ #-------------------------------------------------------------------------
+
+ def _add_conflict(self, doc_id, my_doc_rev, my_content):
+ self._conflict_log.append((doc_id, my_doc_rev, my_content))
+
+ def _delete_conflicts(self, doc, conflict_revs):
+ deleting = [(doc.doc_id, c_rev) for c_rev in conflict_revs]
+ self._conflict_log.delete_conflicts(deleting)
+ doc.has_conflicts = self._has_conflicts(doc.doc_id)
+
+ def _prune_conflicts(self, doc, doc_vcr):
+ if self._has_conflicts(doc.doc_id):
+ autoresolved = False
+ c_revs_to_prune = []
+ for c_doc in self._get_conflicts(doc.doc_id):
+ c_vcr = vectorclock.VectorClockRev(c_doc.rev)
+ if doc_vcr.is_newer(c_vcr):
+ c_revs_to_prune.append(c_doc.rev)
+ elif doc.same_content_as(c_doc):
+ c_revs_to_prune.append(c_doc.rev)
+ doc_vcr.maximize(c_vcr)
+ autoresolved = True
+ if autoresolved:
+ doc_vcr.increment(self._replica_uid)
+ doc.rev = doc_vcr.as_str()
+ c = self._db_handle.cursor()
+ self._delete_conflicts(c, doc, c_revs_to_prune)