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authorVictor Shyba <victor.shyba@gmail.com>2015-08-17 20:23:14 -0300
committerVictor Shyba <victor.shyba@gmail.com>2015-08-26 17:20:22 -0300
commit6ce4114a19ca8a363f264bfc654d839d266dde5c (patch)
tree9bd488661a7df7a92430f8551c2558d7aa1f665b /common/src/leap/soledad
parent7f262d68c0afe43a3bd3864a19aac46051de7571 (diff)
[refactor] _process_incoming_doc is a function now
This was being calculated inside CouchDatabase, but it is not a persistence responsibility. It clearly doesn't belong to this persistence layer and seeing both sides separated allow us to work better on both parts.
Diffstat (limited to 'common/src/leap/soledad')
-rw-r--r--common/src/leap/soledad/common/couch.py121
1 files changed, 64 insertions, 57 deletions
diff --git a/common/src/leap/soledad/common/couch.py b/common/src/leap/soledad/common/couch.py
index 6183be6e..13808502 100644
--- a/common/src/leap/soledad/common/couch.py
+++ b/common/src/leap/soledad/common/couch.py
@@ -149,6 +149,15 @@ class CouchDocument(SoledadDocument):
self._conflicts)
self.has_conflicts = len(self._conflicts) > 0
+ def update(self, new_doc):
+ # update info
+ self.rev = new_doc.rev
+ if new_doc.is_tombstone():
+ self.is_tombstone()
+ else:
+ self.content = new_doc.content
+ self.has_conflicts = new_doc.has_conflicts
+
def _prune_conflicts(self, doc_vcr, autoresolved_increment):
"""
Prune conflicts that are older then the current document's revision, or
@@ -1313,7 +1322,13 @@ class CouchDatabase(CommonBackend):
self._save_source_info(replica_uid, replica_gen,
replica_trans_id, number_of_docs,
doc_idx, sync_id)
- state = self._process_incoming_doc(doc, save_conflict)
+ my_doc = self._get_doc(doc.doc_id, check_for_conflicts=True)
+ if my_doc is not None:
+ my_doc.set_conflicts(self.get_doc_conflicts(my_doc.doc_id, my_doc.couch_rev))
+ state, save_doc = _process_incoming_doc(my_doc, doc, save_conflict, self.replica_uid)
+ if save_doc:
+ self._put_doc(my_doc, save_doc)
+ doc.update(save_doc)
return state, self._get_generation()
def _save_source_info(self, replica_uid, replica_gen, replica_trans_id,
@@ -1327,62 +1342,6 @@ class CouchDatabase(CommonBackend):
number_of_docs=number_of_docs, doc_idx=doc_idx,
sync_id=sync_id)
- def _process_incoming_doc(self, doc, save_conflict):
- """
- Check document, save and return state.
- """
- cur_doc = self._get_doc(doc.doc_id, check_for_conflicts=True)
- # at this point, `doc` has arrived from the other syncing party, and
- # we will decide what to do with it.
- # First, we prepare the arriving doc to update couch database.
- old_doc = doc
- doc = self._factory(doc.doc_id, doc.rev, doc.get_json())
- if cur_doc is None:
- self._put_doc(cur_doc, doc)
- return 'inserted'
- doc.couch_rev = cur_doc.couch_rev
- doc.set_conflicts(self.get_doc_conflicts(doc.doc_id, doc.couch_rev))
- # fetch conflicts because we will eventually manipulate them
- # from now on, it works just like u1db sqlite backend
- doc_vcr = vectorclock.VectorClockRev(doc.rev)
- cur_vcr = vectorclock.VectorClockRev(cur_doc.rev)
- if doc_vcr.is_newer(cur_vcr):
- rev = doc.rev
- doc._prune_conflicts(doc_vcr, self._replica_uid)
- if doc.rev != rev:
- # conflicts have been autoresolved
- state = 'superseded'
- else:
- state = 'inserted'
- self._put_doc(cur_doc, doc)
- elif doc.rev == cur_doc.rev:
- # magical convergence
- state = 'converged'
- elif cur_vcr.is_newer(doc_vcr):
- # Don't add this to seen_ids, because we have something newer,
- # so we should send it back, and we should not generate a
- # conflict
- state = 'superseded'
- elif cur_doc.same_content_as(doc):
- # the documents have been edited to the same thing at both ends
- doc_vcr.maximize(cur_vcr)
- doc_vcr.increment(self._replica_uid)
- doc.rev = doc_vcr.as_str()
- self._put_doc(cur_doc, doc)
- state = 'superseded'
- else:
- state = 'conflicted'
- if save_conflict:
- self._force_doc_sync_conflict(doc)
- # update info
- old_doc.rev = doc.rev
- if doc.is_tombstone():
- old_doc.is_tombstone()
- else:
- old_doc.content = doc.content
- old_doc.has_conflicts = doc.has_conflicts
- return state
-
def get_docs(self, doc_ids, check_for_conflicts=True,
include_deleted=False):
"""
@@ -1525,3 +1484,51 @@ class CouchServerState(ServerState):
delete databases.
"""
raise Unauthorized()
+
+
+def _process_incoming_doc(my_doc, other_doc, save_conflict, replica_uid):
+ """
+ Check document, save and return state.
+ """
+ # at this point, `doc` has arrived from the other syncing party, and
+ # we will decide what to do with it.
+ # First, we prepare the arriving doc to update couch database.
+ new_doc = CouchDocument(other_doc.doc_id, other_doc.rev, other_doc.get_json())
+ if my_doc is None:
+ return 'inserted', new_doc
+ new_doc.couch_rev = my_doc.couch_rev
+ new_doc.set_conflicts(my_doc.get_conflicts())
+ # fetch conflicts because we will eventually manipulate them
+ # from now on, it works just like u1db sqlite backend
+ doc_vcr = vectorclock.VectorClockRev(new_doc.rev)
+ cur_vcr = vectorclock.VectorClockRev(my_doc.rev)
+ if doc_vcr.is_newer(cur_vcr):
+ rev = new_doc.rev
+ new_doc._prune_conflicts(doc_vcr, replica_uid)
+ if new_doc.rev != rev:
+ # conflicts have been autoresolved
+ return 'superseded', new_doc
+ else:
+ return'inserted', new_doc
+ elif new_doc.rev == my_doc.rev:
+ # magical convergence
+ return 'converged', None
+ elif cur_vcr.is_newer(doc_vcr):
+ # Don't add this to seen_ids, because we have something newer,
+ # so we should send it back, and we should not generate a
+ # conflict
+ other_doc.update(new_doc)
+ return 'superseded', None
+ elif my_doc.same_content_as(new_doc):
+ # the documents have been edited to the same thing at both ends
+ doc_vcr.maximize(cur_vcr)
+ doc_vcr.increment(replica_uid)
+ new_doc.rev = doc_vcr.as_str()
+ return 'superseded', new_doc
+ else:
+ if save_conflict:
+ new_doc._prune_conflicts(vectorclock.VectorClockRev(new_doc.rev), replica_uid)
+ new_doc.add_conflict(my_doc)
+ return 'conflicted', new_doc
+ other_doc.update(new_doc)
+ return 'conflicted', None