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authordrebs <drebs@leap.se>2013-01-24 11:58:22 -0200
committerdrebs <drebs@leap.se>2013-01-24 11:58:22 -0200
commit6bd210fac7d5da5efeaa646a51f6c50b00e600a2 (patch)
tree1b949316fd619b7a2f54030d2378d057fc114d88 /src/leap/soledad/backends
parent9fc4829334e337155ef49de168e492ed7cfe58d7 (diff)
Couch backend stores data as attachments.
Diffstat (limited to 'src/leap/soledad/backends')
-rw-r--r--src/leap/soledad/backends/couch.py49
1 files changed, 25 insertions, 24 deletions
diff --git a/src/leap/soledad/backends/couch.py b/src/leap/soledad/backends/couch.py
index 78026af8..8ba42d78 100644
--- a/src/leap/soledad/backends/couch.py
+++ b/src/leap/soledad/backends/couch.py
@@ -1,7 +1,5 @@
-import sys
import uuid
from base64 import b64encode, b64decode
-from u1db import errors
from u1db.sync import LocalSyncTarget
from couchdb.client import Server, Document as CouchDocument
from couchdb.http import ResourceNotFound
@@ -17,7 +15,8 @@ except ImportError:
class CouchDatabase(ObjectStore):
"""A U1DB implementation that uses Couch as its persistence layer."""
- def __init__(self, url, database, replica_uid=None, full_commit=True, session=None):
+ def __init__(self, url, database, replica_uid=None, full_commit=True,
+ session=None):
"""Create a new Couch data container."""
self._url = url
self._full_commit = full_commit
@@ -54,8 +53,9 @@ class CouchDatabase(ObjectStore):
doc_id=doc_id,
rev=cdoc['u1db_rev'],
has_conflicts=has_conflicts)
- if cdoc['u1db_json'] is not None:
- doc.content = json.loads(cdoc['u1db_json'])
+ contents = self._database.get_attachment(cdoc, 'u1db_json')
+ if contents:
+ doc.content = json.loads(contents.getvalue())
else:
doc.make_tombstone()
return doc
@@ -83,13 +83,14 @@ class CouchDatabase(ObjectStore):
cdoc['_rev'] = old_cdoc['_rev']
# store u1db's rev
cdoc['u1db_rev'] = doc.rev
+ # save doc in db
+ self._database.save(cdoc)
# store u1db's content as json string
if not doc.is_tombstone():
- cdoc['u1db_json'] = doc.get_json()
+ self._database.put_attachment(cdoc, doc.get_json(),
+ filename='u1db_json')
else:
- cdoc['u1db_json'] = None
- # save doc in db
- self._database.save(cdoc)
+ self._database.delete_attachment(cdoc, 'u1db_json')
def get_sync_target(self):
return CouchSyncTarget(self)
@@ -103,7 +104,6 @@ class CouchDatabase(ObjectStore):
#self._server = None
self._database = None
return True
-
def sync(self, url, creds=None, autocreate=True):
from u1db.sync import Synchronizer
@@ -114,15 +114,16 @@ class CouchDatabase(ObjectStore):
if self._replica_uid is None:
self._replica_uid = uuid.uuid4().hex
doc = self._factory(doc_id=self.U1DB_DATA_DOC_ID)
- doc.content = { 'sync_log' : [],
- 'transaction_log' : [],
- 'conflict_log' : b64encode(json.dumps([])),
- 'replica_uid' : self._replica_uid }
+ doc.content = {'sync_log': [],
+ 'transaction_log': [],
+ 'conflict_log': b64encode(json.dumps([])),
+ 'replica_uid': self._replica_uid}
self._put_doc(doc)
def _get_u1db_data(self):
cdoc = self._database.get(self.U1DB_DATA_DOC_ID)
- content = json.loads(cdoc['u1db_json'])
+ jsonstr = self._database.get_attachment(cdoc, 'u1db_json').getvalue()
+ content = json.loads(jsonstr)
self._sync_log.log = content['sync_log']
self._transaction_log.log = content['transaction_log']
self._conflict_log.log = json.loads(b64decode(content['conflict_log']))
@@ -131,14 +132,15 @@ class CouchDatabase(ObjectStore):
def _set_u1db_data(self):
doc = self._factory(doc_id=self.U1DB_DATA_DOC_ID)
- doc.content = { 'sync_log' : self._sync_log.log,
- 'transaction_log' : self._transaction_log.log,
- # Here, the b64 encode ensures that document content
- # does not cause strange behaviour in couchdb because
- # of encoding.
- 'conflict_log' : b64encode(json.dumps(self._conflict_log.log)),
- 'replica_uid' : self._replica_uid,
- '_rev' : self._couch_rev}
+ doc.content = {
+ 'sync_log': self._sync_log.log,
+ 'transaction_log': self._transaction_log.log,
+ # Here, the b64 encode ensures that document content
+ # does not cause strange behaviour in couchdb because
+ # of encoding.
+ 'conflict_log': b64encode(json.dumps(self._conflict_log.log)),
+ 'replica_uid': self._replica_uid,
+ '_rev': self._couch_rev}
self._put_doc(doc)
#-------------------------------------------------------------------------
@@ -166,4 +168,3 @@ class CouchSyncTarget(LocalSyncTarget):
self._db._set_replica_gen_and_trans_id(
source_replica_uid, source_replica_generation,
source_replica_transaction_id)
-