def _list_collections(self, sock_info, slave_okay, session,
read_preference, **kwargs):
"""Internal listCollections helper."""
coll = self.get_collection("$cmd", read_preference=read_preference)
if sock_info.max_wire_version > 2:
cmd = SON([("listCollections", 1), ("cursor", {})])
cmd.update(kwargs)
with self.__client._tmp_session(session,
close=False) as tmp_session:
cursor = self._command(sock_info,
cmd,
slave_okay,
read_preference=read_preference,
session=tmp_session)["cursor"]
cmd_cursor = CommandCursor(coll,
cursor,
sock_info.address,
session=tmp_session,
explicit_session=session
is not None)
else:
match = _INDEX_REGEX
if "filter" in kwargs:
match = {"$and": [_INDEX_REGEX, kwargs["filter"]]}
dblen = len(self.name.encode("utf8") + b".")
pipeline = [{
"$project": {
"name": {
"$substr": ["$name", dblen, -1]
},
"options": 1
}
}, {
"$match": match
}]
cmd = SON([("aggregate", "system.namespaces"),
("pipeline", pipeline),
("cursor", kwargs.get("cursor", {}))])
cursor = self._command(sock_info, cmd, slave_okay)["cursor"]
cmd_cursor = CommandCursor(coll, cursor, sock_info.address)
cmd_cursor._maybe_pin_connection(sock_info)
return cmd_cursor
def _list_collections(self, sock_info, secondary_okay, session,
read_preference, **kwargs):
"""Internal listCollections helper."""
coll = self.get_collection("$cmd", read_preference=read_preference)
cmd = SON([("listCollections", 1), ("cursor", {})])
cmd.update(kwargs)
with self.__client._tmp_session(session, close=False) as tmp_session:
cursor = self._command(sock_info,
cmd,
secondary_okay,
read_preference=read_preference,
session=tmp_session)["cursor"]
cmd_cursor = CommandCursor(coll,
cursor,
sock_info.address,
session=tmp_session,
explicit_session=session is not None)
cmd_cursor._maybe_pin_connection(sock_info)
return cmd_cursor
