kolla/docker/rabbitmq/rabbitmq_get_gospel_node.py

71 lines
1.9 KiB
Python

#!/usr/bin/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 json
import re
import subprocess
import traceback
def convert_erlang_to_json(term):
term = re.sub('[\s+]', '', term)
term = re.sub('([<>].*?)}', r'"\1"}', term)
term = re.sub('{([a-z].*?),', r'{"\1":', term)
term = re.sub(':([a-z].*?)}', r':"\1"}', term)
return json.loads(term)
def main():
try:
raw_status = subprocess.check_output(
"rabbitmqctl eval 'rabbit_clusterer:status().'",
shell=True, stderr=subprocess.STDOUT
)
if "Rabbit is running in cluster configuration" not in raw_status:
raise AttributeError
status = convert_erlang_to_json(
'\n'.join(raw_status.split('\n')[1:-3])
)
gospel_node = None
for msg in status:
if 'gospel' in msg:
gospel_node = msg['gospel']['node'].split('@')[1]
if gospel_node is None:
raise AttributeError
except AttributeError:
result = {
'failed': True,
'error': raw_status,
'changed': True
}
except Exception:
result = {
'failed': True,
'error': traceback.format_exc(),
'changed': True
}
else:
result = {
'failed': False,
'hostname': gospel_node,
'changed': False
}
print(json.dumps(result))
if __name__ == '__main__':
main()