nodepool/tools/print-zk.py
James E. Blair 10df93540f Use Zuul-style ZooKeeper connections
We have made many improvements to connection handling in Zuul.
Bring those back to Nodepool by copying over the zuul/zk directory
which has our base ZK connection classes.

This will enable us to bring other Zuul classes over, such as the
component registry.

The existing connection-related code is removed and the remaining
model-style code is moved to nodepool.zk.zookeeper.  Almost every
file imported the model as nodepool.zk, so import adjustments are
made to compensate while keeping the code more or less as-is.

Change-Id: I9f793d7bbad573cb881dfcfdf11e3013e0f8e4a3
2022-05-23 07:40:20 -07:00

61 lines
1.7 KiB
Python
Executable File

#!/usr/bin/env python
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import argparse
import logging
import nodepool.config
from nodepool.zk import zookeeper as zk
from nodepool.zk import ZooKeeperClient
# A script to print the zookeeper tree given a nodepool config file.
logging.basicConfig()
parser = argparse.ArgumentParser(description='Print the zookeeper tree')
parser.add_argument('-c', dest='config',
default='/etc/nodepool/nodepool.yaml',
help='path to config file')
args = parser.parse_args()
config = nodepool.config.loadConfig(args.config)
zk_client = ZooKeeperClient(
config.zookeeper_servers,
tls_cert=config.zookeeper_tls_cert,
tls_key=config.zookeeper_tls_key,
tls_ca=config.zookeeper_tls_ca,
timeout=config.zookeeper_timeout,
)
zk_client.connect()
zk = zk.ZooKeeper(zk_client, enable_cache=False)
def join(a, b):
if a.endswith('/'):
return a+b
return a+'/'+b
def print_tree(node):
data, stat = zk.client.get(node)
print("Node: %s %s" % (node, stat))
if data:
print(data)
for child in zk.client.get_children(node):
print()
print_tree(join(node, child))
print_tree('/')
zk.disconnect()