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114 lines
3.5 KiB
114 lines
3.5 KiB
#coding:utf8
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from kazoo.client import KazooClient
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import threading
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import time
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from global_dict import global_scenes_manager
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import json
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# 初始化日志
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import logging
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logger = logging.getLogger(__name__)
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def start_zookeeper_listeners(zk, node_path, stop_event, initial_data, initial_children):
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'''
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在独立的线程中启动 ZooKeeper 监听器，忽略启动之前的节点变化。
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:param zk:
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:param node_path:
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:param stop_event:
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:param initial_data:
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:param initial_children:
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:return:
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'''
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def data_change_listener(data, stat):
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if data == initial_data:
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return # 忽略之前的状态
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if data:
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logger.info(f"[DataWatch] 节点数据变化：{data.decode('utf-8')}")
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node_data = json.loads(data)
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if 'version' in node_data:
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scenes_id = str(node_data['scenes_id'])
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version = str(node_data['version'])
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global_scenes_manager[scenes_id] = version
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else:
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logger.info("[DataWatch] 节点已删除或不存在")
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def children_change_listener(children):
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if children == initial_children:
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return # 忽略之前的状态
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logger.info(f"[ChildrenWatch] 子节点列表变化：{children}")
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# 设置监听器
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zk.DataWatch(node_path, data_change_listener)
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zk.ChildrenWatch(node_path, children_change_listener)
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# 等待停止事件
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stop_event.wait()
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def simulate_changes(zk, node_path):
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"""
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模拟节点的数据和子节点的变化。
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"""
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try:
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time.sleep(2)
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print("模拟：更新节点数据")
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zk.set(node_path, b"updated data")
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time.sleep(2)
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print("模拟：创建子节点 child1")
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zk.create(f"{node_path}/child1", b"child1 data")
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time.sleep(2)
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print("模拟：删除子节点 child1")
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zk.delete(f"{node_path}/child1")
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time.sleep(2)
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print("模拟：删除节点")
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zk.delete(node_path)
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except Exception as e:
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print(f"模拟过程中发生错误: {e}")
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def monitor(hosts,node_path):
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# 连接到 ZooKeeper 服务器
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zk = KazooClient(hosts=hosts)
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zk.start()
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# 获取启动监听器之前的节点状态
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if zk.exists(node_path):
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initial_data, _ = zk.get(node_path) # 获取节点数据
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initial_children = zk.get_children(node_path) # 获取子节点列表
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else:
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# 如果节点不存在，初始化为空
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initial_data = None
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initial_children = []
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# 创建一个停止事件
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stop_event = threading.Event()
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# 创建一个线程来运行监听器
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listener_thread = threading.Thread(target=start_zookeeper_listeners, args=(zk, node_path, stop_event, initial_data, initial_children))
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listener_thread.daemon = True
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listener_thread.start()
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# 创建一个线程来模拟节点变化
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# simulator_thread = threading.Thread(target=simulate_changes, args=(zk, node_path))
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# simulator_thread.start()
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#
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# try:
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# # 主线程可以执行其他任务，或者等待子线程完成
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# simulator_thread.join()
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# except KeyboardInterrupt:
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# print("程序被用户中断")
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# finally:
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# # 触发停止事件
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# stop_event.set()
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# listener_thread.join()
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# zk.stop()
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# zk.close()
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# print("ZooKeeper 客户端已关闭")
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if __name__ == "__main__":
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from config_loader import load_config
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config = load_config()
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monitor(config['zookeeper']['host'], config['zookeeper']['node'])
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