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-rw-r--r--client/src/leap/soledad/client/api.py25
1 files changed, 16 insertions, 9 deletions
diff --git a/client/src/leap/soledad/client/api.py b/client/src/leap/soledad/client/api.py
index d86990e6..6fcc8d79 100644
--- a/client/src/leap/soledad/client/api.py
+++ b/client/src/leap/soledad/client/api.py
@@ -115,7 +115,13 @@ class Soledad(object):
local_db_file_name = 'soledad.u1db'
secrets_file_name = "soledad.json"
default_prefix = os.path.join(get_path_prefix(), 'leap', 'soledad')
- _syncing_lock = defaultdict(DeferredLock)
+
+ """
+ A dictionary that holds locks which avoid multiple sync attempts from the
+ same database replica. The dictionary indexes are the paths to each local
+ db, so we guarantee that only one sync happens for a local db at a time.
+ """
+ _sync_lock = defaultdict(DeferredLock)
def __init__(self, uuid, passphrase, secrets_path, local_db_path,
server_url, cert_file, shared_db=None,
@@ -673,10 +679,11 @@ class Soledad(object):
# -----------------------------------------------------------------
sync_url = urlparse.urljoin(self._server_url, 'user-%s' % self.uuid)
- d = self.syncing_lock.run(lambda: self._dbsyncer.sync(
+ d = self.sync_lock.run(
+ self._dbsyncer.sync,
sync_url,
creds=self._creds,
- defer_decryption=defer_decryption))
+ defer_decryption=defer_decryption)
def _sync_callback(local_gen):
self._last_received_docs = docs = self._dbsyncer.received_docs
@@ -708,15 +715,15 @@ class Soledad(object):
return d
@property
- def syncing_lock(self):
+ def sync_lock(self):
"""
- Class based lock to ensure consistency on concurrent calls to sync.
- Each lock is based on the path of db file.
+ Class based lock to prevent concurrent syncs using the same local db
+ file.
- :return: DeferredLock based on this instance path of db file
+ :return: A shared lock based on this instance's db file path.
:rtype: DeferredLock
"""
- return self._syncing_lock[self._local_db_path]
+ return self._sync_lock[self._local_db_path]
@property
def syncing(self):
@@ -726,7 +733,7 @@ class Soledad(object):
:return: Wether Soledad is currently synchronizing with the server.
:rtype: bool
"""
- return self.syncing_lock.locked
+ return self.sync_lock.locked
def _set_token(self, token):
"""