248 lines
8 KiB
Python
Executable file
248 lines
8 KiB
Python
Executable file
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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#
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# 2010-2012 Nico Schottelius (nico-cdist at schottelius.org)
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#
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# This file is part of cdist.
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#
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# cdist is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# cdist is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with cdist. If not, see <http://www.gnu.org/licenses/>.
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#
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#
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def commandline():
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"""Parse command line"""
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import argparse
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import cdist.banner
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import cdist.config
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import cdist.install
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# Construct parser others can reuse
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parser = {}
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# Options _all_ parsers have in common
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parser['loglevel'] = argparse.ArgumentParser(add_help=False)
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parser['loglevel'].add_argument('-d', '--debug',
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help='Set log level to debug', action='store_true',
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default=False)
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parser['loglevel'].add_argument('-v', '--verbose',
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help='Set log level to info, be more verbose',
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action='store_true', default=False)
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# Main subcommand parser
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parser['main'] = argparse.ArgumentParser(description='cdist ' + cdist.VERSION,
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parents=[parser['loglevel']])
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parser['main'].add_argument('-V', '--version',
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help='Show version', action='version',
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version='%(prog)s ' + cdist.VERSION)
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parser['sub'] = parser['main'].add_subparsers(title="Commands")
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# Banner
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parser['banner'] = parser['sub'].add_parser('banner',
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parents=[parser['loglevel']])
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parser['banner'].set_defaults(func=cdist.banner.banner)
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# Config and install (common stuff)
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parser['configinstall'] = argparse.ArgumentParser(add_help=False)
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parser['configinstall'].add_argument('host', nargs='+',
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help='one or more hosts to operate on')
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parser['configinstall'].add_argument('-c', '--cdist-home',
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help='Change cdist home (default: .. from bin directory)',
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action='store')
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parser['configinstall'].add_argument('-i', '--initial-manifest',
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help='Path to a cdist manifest or \'-\' to read from stdin.',
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dest='manifest', required=False)
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parser['configinstall'].add_argument('-p', '--parallel',
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help='Operate on multiple hosts in parallel',
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action='store_true', dest='parallel')
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parser['configinstall'].add_argument('-s', '--sequential',
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help='Operate on multiple hosts sequentially (default)',
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action='store_false', dest='parallel')
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parser['configinstall'].add_argument('--remote-copy',
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help='Command to use for remote copy (should behave like scp)',
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action='store', dest='remote_copy',
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default="scp -o User=root -q")
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parser['configinstall'].add_argument('--remote-exec',
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help='Command to use for remote execution (should behave like ssh)',
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action='store', dest='remote_exec',
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default="ssh -o User=root -q")
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# Config
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parser['config'] = parser['sub'].add_parser('config',
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parents=[parser['loglevel'], parser['configinstall']])
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parser['config'].set_defaults(func=config)
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# Install
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# 20120525/sar: commented until it actually does something
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#parser['install'] = parser['sub'].add_parser('install',
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# parents=[parser['loglevel'], parser['configinstall']])
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#parser['install'].set_defaults(func=install)
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for p in parser:
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parser[p].epilog = "Get cdist at http://www.nico.schottelius.org/software/cdist/"
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args = parser['main'].parse_args(sys.argv[1:])
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# Loglevels are handled globally in here and debug wins over verbose
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if args.verbose:
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logging.root.setLevel(logging.INFO)
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if args.debug:
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logging.root.setLevel(logging.DEBUG)
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log.debug(args)
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args.func(args)
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def config(args):
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configinstall(args, mode=cdist.config.Config)
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def install(args):
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configinstall(args, mode=cdist.install.Install)
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def configinstall(args, mode):
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"""Configure or install remote system"""
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import multiprocessing
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import time
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initial_manifest_tempfile = None
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if args.manifest == '-':
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# read initial manifest from stdin
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import tempfile
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try:
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handle, initial_manifest_temp_path = tempfile.mkstemp(prefix='cdist.stdin.')
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with os.fdopen(handle, 'w') as fd:
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fd.write(sys.stdin.read())
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except (IOError, OSError) as e:
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raise cdist.Error("Creating tempfile for stdin data failed: %s" % e)
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args.manifest = initial_manifest_temp_path
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import atexit
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atexit.register(lambda: os.remove(initial_manifest_temp_path))
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process = {}
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failed_hosts = []
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time_start = time.time()
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for host in args.host:
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if args.parallel:
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log.debug("Creating child process for %s", host)
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process[host] = multiprocessing.Process(target=configinstall_onehost, args=(host, args, mode, True))
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process[host].start()
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else:
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try:
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configinstall_onehost(host, args, mode, parallel=False)
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except cdist.Error as e:
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failed_hosts.append(host)
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# Catch errors in parallel mode when joining
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if args.parallel:
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for host in process.keys():
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log.debug("Joining process %s", host)
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process[host].join()
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if not process[host].exitcode == 0:
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failed_hosts.append(host)
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time_end = time.time()
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log.info("Total processing time for %s host(s): %s", len(args.host),
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(time_end - time_start))
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if len(failed_hosts) > 0:
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raise cdist.Error("Failed to deploy to the following hosts: " +
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" ".join(failed_hosts))
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def configinstall_onehost(host, args, mode, parallel):
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"""Configure or install ONE remote system"""
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try:
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import cdist.context
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context = cdist.context.Context(
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target_host=host,
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remote_copy=args.remote_copy,
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remote_exec=args.remote_exec,
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initial_manifest=args.manifest,
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base_path=args.cdist_home,
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exec_path=sys.argv[0],
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debug=args.debug)
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c = mode(context)
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c.deploy_and_cleanup()
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context.cleanup()
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except cdist.Error as e:
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# We are running in our own process here, need to sys.exit!
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if parallel:
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log.error(e)
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sys.exit(1)
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else:
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raise
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except KeyboardInterrupt:
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# Ignore in parallel mode, we are existing anyway
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if parallel:
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sys.exit(0)
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# Pass back to controlling code in sequential mode
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else:
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raise
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def emulator():
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"""Prepare and run emulator"""
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import cdist.emulator
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emulator = cdist.emulator.Emulator(sys.argv)
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return emulator.run()
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if __name__ == "__main__":
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# Sys is needed for sys.exit()
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import sys
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cdistpythonversion = '3.2'
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if sys.version < cdistpythonversion:
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print('Cdist requires Python >= ' + cdistpythonversion +
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' on the source host.', file=sys.stderr)
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sys.exit(1)
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exit_code = 0
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try:
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import logging
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import os
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import re
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# Ensure our /lib/ is included into PYTHON_PATH
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sys.path.insert(0, os.path.abspath(
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os.path.join(os.path.dirname(os.path.realpath(__file__)), '../lib')))
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# And now import our stuff
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import cdist
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log = logging.getLogger("cdist")
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logging.basicConfig(format='%(levelname)s: %(message)s')
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if re.match("__", os.path.basename(sys.argv[0])):
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emulator()
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else:
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commandline()
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except KeyboardInterrupt:
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pass
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except cdist.Error as e:
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log.error(e)
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exit_code = 1
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# Determine exit code by return value of function
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sys.exit(exit_code)
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