Can anyone help me with this? I am stuck on this problem.. Or if there any better python client for Zookeeper then please let me know as well?
On Mon, Nov 18, 2013 at 9:41 PM, Techy Teck <[email protected]> wrote: > I recently started working with Python for Zookeeper. I am using `kazoo` > library for Zookeeper. I need to keep a watch on my root node which is - > > /my/example > > couple of other nodes which might get added to my above root node will be > like this - > > /my/example/workflow > /my/example/workflow/v1 > /my/example/workflow/v1/step1 > /my/example/workflow/v1/step2 > > > Now I need to check whether the children which got added in root node > `/my/example` is `/my/example/workflow` or not. If `workflow` node gets > added up in `/my/example` then I will keep a watch on > `/my/example/workflow` node only and if any new children gets added up in > `/my/example/workflow` node then I need to keep a watch on that node as > well. > > Let's say, children of `/my/example/workflow` is > `/my/example/workflow/v1`, so now I need to keep a watch on > `/my/example/workflow/v1` and then if any new nodes gets added up on this > node `/my/example/workflow/v1` such as `/my/example/workflow/v1/step1` and > `/my/example/workflow/v1/step2` then I need to print the children of > `/my/example/workflow/v1` node and I won't make any new watches now. > > Now I am not sure how to keep on calling watches on my children until > certain point, here in this case till `/my/example/workflow/v1` I need to > keep on watching and as soon as all the steps nodes gets added up, I need > to print the children of `/my/example/workflow/v1`. Below is my code which > works fine for watching on only one root node and now I am not sure how to > do my above problem? > > > #!/usr/bin/python > from kazoo.client import KazooClient > > zk = KazooClient(hosts='127.0.0.1:2181') > zk.start() > > @zk.ChildrenWatch("/my/example") > def watch_children(children): > print("Children are now: %s" % children) > > > Any help is really appreciated on this. I was following the documentation > by reading the kazoo tutorial from [here]( > http://kazoo.readthedocs.org/en/latest/basic_usage.html#watchers) >
