frappy/bin/frappy-cli
Markus Zolliker c0f6569f1b frappy-cli: connect to servers on localhost by default
--scan option: specify where to scan if not on localhost

Change-Id: I51a694eb3cb045e7d18c19a332db8e6ba063009b
2025-06-02 15:24:04 +02:00

101 lines
3.3 KiB
Python
Executable File

#!/usr/bin/env python3
# *****************************************************************************
# Copyright (c) 2015-2024 by the authors, see LICENSE
#
# This program is free software; you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free Software
# Foundation; either version 2 of the License, or (at your option) any later
# version.
#
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
# details.
#
# You should have received a copy of the GNU General Public License along with
# this program; if not, write to the Free Software Foundation, Inc.,
# 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# Module authors:
# Alexander Lenz <alexander.lenz@frm2.tum.de>
# Markus Zolliker <markus.zolliker@psi.ch>
#
# *****************************************************************************
import sys
import argparse
import socket
from pathlib import Path
# Add import path for inplace usage
sys.path.insert(0, str(Path(__file__).absolute().parents[1]))
from frappy.client.interactive import init, run, clientenv, interact
from frappy.protocol.discovery import scan
def parseArgv(argv):
parser = argparse.ArgumentParser()
parser.add_argument('-i', '--include',
help='file to execute after connecting to the clients', metavar='file',
type=Path, action='append', default=[])
parser.add_argument('-s', '--scan',
help='hosts to scan for (-s subnet for all nodes in subnet)',
action='append', default=[])
parser.add_argument('-o', '--only-execute',
help='Do not go into interactive mode after executing files. \
Has no effect without --include.', action='store_true')
parser.add_argument('node',
help='Nodes the client should connect to.\n', metavar='host:port',
nargs='*', type=str, default=[])
return parser.parse_args(argv)
def own_ip():
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
s.settimeout(0)
try:
# doesn't even have to be reachable
s.connect(('10.254.254.254', 1))
return s.getsockname()[0]
except Exception:
return '127.0.0.1'
finally:
s.close()
args = parseArgv(sys.argv[1:])
nodes = args.node
hosts = args.scan
if not nodes and not hosts:
host = ['localhost']
if hosts:
answers = []
for host in hosts:
ans = scan()
if host == 'subnet': # all in subnet
answers.extend(ans)
else: # filter by ip
ip = socket.gethostbyname(host)
if ip == '127.0.0.1':
ip = own_ip()
answers.extend(a for a in ans if a.address == ip)
nodes.extend(f'{h.hostname}:{h.port}' for h in answers)
success = init(*nodes)
run_error = ''
file_success = False
try:
for file in args.include:
run(file)
file_success = True
except Exception as e:
run_error = f'\n{clientenv.short_traceback()}'
if success:
if args.include and file_success and args.only_execute:
print('skipping interactive mode')
exit()
interact(run_error)