def get_children(self, path, watcher=None):
"""Return the list of the children of the node of the given path.
If the `watcher` function is provided and the call is successful (no
exception is thrown), a watch will be left on the node with the given
path. The watch will be triggered by a successful operation that
deletes the node of the given path or creates/delete a child under the
node.
The list of children returned is not sorted and no guarantee is
provided as to its natural or lexical order.
:Parameters:
- `path`: path to node
- `watcher`: (optional) watcher function to call when changes occur
:Return:
list of children nodes
:Exceptions:
- `NoNodeException`: if node does not exist
"""
if watcher:
watcher = self._wrap_watcher(watcher)
children = _zookeeper.get_children(self.zk_handle, path, watcher)
assert isinstance(children, list)
return children
def test_sync_delete(self):
ZOO_OPEN_ACL_UNSAFE = {"perms":0x1f, "scheme":"world", "id" :"anyone"}
self.assertEqual(self.connected, True)
ret = zookeeper.create(self.handle, "/zk-python-deletetest", "nodecontents", [ZOO_OPEN_ACL_UNSAFE], zookeeper.EPHEMERAL)
self.assertEqual(ret, "/zk-python-deletetest")
ret = zookeeper.delete(self.handle,"/zk-python-deletetest")
self.assertEqual(ret, zookeeper.OK)
children = zookeeper.get_children(self.handle, "/")
self.assertEqual(False, "zk-python-deletetest" in children)
# test exception
self.assertRaises(zookeeper.NoNodeException,
zookeeper.delete,
self.handle,
"/zk-python-deletetest")
def test_sync_getchildren(self):
self.ensureCreated("/zk-python-getchildrentest", flags=0)
self.ensureCreated("/zk-python-getchildrentest/child")
children = zookeeper.get_children(self.handle, "/zk-python-getchildrentest")
self.assertEqual(len(children), 1, "Expected to find 1 child, got " + str(len(children)))
