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-rw-r--r--src/leap/soledad/backends/objectstore.py26
1 files changed, 23 insertions, 3 deletions
diff --git a/src/leap/soledad/backends/objectstore.py b/src/leap/soledad/backends/objectstore.py
index 5bd864c8..298bdda3 100644
--- a/src/leap/soledad/backends/objectstore.py
+++ b/src/leap/soledad/backends/objectstore.py
@@ -1,5 +1,6 @@
import uuid
from u1db.backends import CommonBackend
+from u1db import errors
from soledad import SyncLog, TransactionLog
from soledad.backends.leap import LeapDocument
@@ -46,8 +47,21 @@ class ObjectStore(CommonBackend):
raise errors.InvalidDocId()
self._check_doc_id(doc.doc_id)
self._check_doc_size(doc)
- # put the document
- doc.rev = self._allocate_doc_rev(doc.rev)
+ # check if document exists
+ old_doc = self._get_doc(doc.doc_id, check_for_conflicts=True)
+ if old_doc and old_doc.has_conflicts:
+ raise errors.ConflictedDoc()
+ if old_doc and doc.rev is None and old_doc.is_tombstone():
+ new_rev = self._allocate_doc_rev(old_doc.rev)
+ else:
+ if old_doc is not None:
+ if old_doc.rev != doc.rev:
+ raise errors.RevisionConflict()
+ else:
+ if doc.rev is not None:
+ raise errors.RevisionConflict()
+ 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
@@ -69,7 +83,7 @@ class ObjectStore(CommonBackend):
new_rev = self._allocate_doc_rev(doc.rev)
doc.rev = new_rev
doc.make_tombstone()
- self._put_doc(olddoc)
+ self._put_doc(doc)
return new_rev
# start of index-related methods: these are not supported by this backend.
@@ -171,9 +185,15 @@ class ObjectStore(CommonBackend):
self._put_doc(doc)
def _get_u1db_data(self, u1db_data_doc_id):
+ """
+ Fetch u1db configuration data from backend storage.
+ """
NotImplementedError(self._get_u1db_data)
def _set_u1db_data(self):
+ """
+ Save u1db configuration data on backend storage.
+ """
doc = self._factory(doc_id=self.U1DB_DATA_DOC_ID)
doc.content = { 'transaction_log' : self._transaction_log.log,
'sync_log' : self._sync_log.log,