Zookeeper Python调用

安装：pip install kazoo 1、链接 from kazoo.client import KazooClient

zk = KazooClient(hosts='127.0.0.1:2181') zk.start()

zk.stop()

2、创建节点

Ensure a path, create if necessary

zk.ensure_path("/my/favorite")

Create a node with data

zk.create("/my/favorite/node", b"a value")

3、获取数据

Determine if a node exists

if zk.exists("/my/favorite"): # Do something

Print the version of a node and its data

data, stat = zk.get("/my/favorite") print("Version: %s, data: %s" % (stat.version, data.decode("utf-8")))

List the children

children = zk.get_children("/my/favorite") print("There are %s children with names %s" % (len(children), children))

4、更新数据 zk.set("/my/favorite", b"some data")

5、递归删除节点 zk.delete("/my/favorite/node", recursive=True)

6、监视节点变化 @zk.ChildrenWatch("/my/favorite/node") def watch_children(children): print("Children are now: %s" % children)

Above function called immediately, and from then on

@zk.DataWatch("/my/favorite") def watch_node(data, stat): print("Version: %s, data: %s" % (stat.version, data.decode("utf-8")))

7、监听事件：LOST/CONNECTED/SUSPENDED from kazoo.client import KazooState

def my_listener(state): if state == KazooState.LOST: # Register somewhere that the session was lost elif state == KazooState.SUSPENDED: # Handle being disconnected from Zookeeper else: # Handle being connected/reconnected to Zookeeper

zk.add_listener(my_listener)

8、kazoo支持异步 9、API DOCUMENT：https://kazoo.readthedocs.io/en/latest/api/client.html