711 lines
27 KiB
Python
711 lines
27 KiB
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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#
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# 2010-2015 Nico Schottelius (nico-cdist at schottelius.org)
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# 2013-2017 Steven Armstrong (steven-cdist at armstrong.cc)
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# 2016-2017 Darko Poljak (darko.poljak at gmail.com)
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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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import logging
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import os
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import sys
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import time
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import itertools
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import tempfile
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import multiprocessing
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from cdist.mputil import mp_pool_run, mp_sig_handler
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import atexit
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import shutil
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import cdist
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import cdist.hostsource
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import cdist.exec.local
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import cdist.exec.remote
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import cdist.util.ipaddr as ipaddr
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import cdist.configuration
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from cdist import core, inventory
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from cdist.util.remoteutil import inspect_ssh_mux_opts
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class Config(object):
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"""Cdist main class to hold arbitrary data"""
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# list of paths (files and/or directories) that will be removed on finish
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_paths_for_removal = []
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@classmethod
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def _register_path_for_removal(cls, path):
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cls._paths_for_removal.append(path)
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@classmethod
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def _remove_paths(cls):
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while cls._paths_for_removal:
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path = cls._paths_for_removal.pop()
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if os.path.isfile(path):
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os.remove(path)
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else:
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shutil.rmtree(path)
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def __init__(self, local, remote, dry_run=False, jobs=None,
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cleanup_cmds=None, remove_remote_files_dirs=False):
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self.local = local
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self.remote = remote
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self._open_logger()
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self.dry_run = dry_run
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self.jobs = jobs
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if cleanup_cmds:
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self.cleanup_cmds = cleanup_cmds
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else:
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self.cleanup_cmds = []
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self.remove_remote_files_dirs = remove_remote_files_dirs
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self.explorer = core.Explorer(self.local.target_host, self.local,
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self.remote, jobs=self.jobs)
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self.manifest = core.Manifest(self.local.target_host, self.local)
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self.code = core.Code(self.local.target_host, self.local, self.remote)
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def _init_files_dirs(self):
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"""Prepare files and directories for the run"""
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self.local.create_files_dirs()
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self.remote.create_files_dirs()
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def _remove_remote_files_dirs(self):
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"""Remove remote files and directories for the run"""
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self.remote.remove_files_dirs()
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def _remove_files_dirs(self):
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"""Remove files and directories for the run"""
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if self.remove_remote_files_dirs:
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self._remove_remote_files_dirs()
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@staticmethod
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def hosts(source):
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try:
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yield from cdist.hostsource.HostSource(source)()
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except (IOError, OSError, UnicodeError) as e:
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raise cdist.Error(
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"Error reading hosts from \'{}\': {}".format(
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source, e))
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@staticmethod
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def construct_remote_exec_copy_patterns(args):
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# default remote cmd patterns
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args.remote_cmds_cleanup_pattern = ""
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args.remote_exec_pattern = None
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args.remote_copy_pattern = None
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args_dict = vars(args)
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# if remote-exec and/or remote-copy args are None then user
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# didn't specify command line options nor env vars:
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# inspect multiplexing options for default cdist.REMOTE_COPY/EXEC
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if (args_dict['remote_copy'] is None or
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args_dict['remote_exec'] is None):
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mux_opts = inspect_ssh_mux_opts()
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if args_dict['remote_exec'] is None:
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args.remote_exec_pattern = cdist.REMOTE_EXEC + mux_opts
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if args_dict['remote_copy'] is None:
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args.remote_copy_pattern = cdist.REMOTE_COPY + mux_opts
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if mux_opts:
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cleanup_pattern = cdist.REMOTE_CMDS_CLEANUP_PATTERN
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else:
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cleanup_pattern = ""
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args.remote_cmds_cleanup_pattern = cleanup_pattern
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@classmethod
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def _check_and_prepare_args(cls, args):
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if args.manifest == '-' and args.hostfile == '-':
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raise cdist.Error(("Cannot read both, manifest and host file, "
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"from stdin"))
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# if no host source is specified then read hosts from stdin
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if not (args.hostfile or args.host):
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args.hostfile = '-'
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if args.manifest == '-':
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# read initial manifest from stdin
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try:
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handle, initial_manifest_temp_path = tempfile.mkstemp(
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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 "
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"failed: %s" % e))
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args.manifest = initial_manifest_temp_path
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atexit.register(lambda: os.remove(initial_manifest_temp_path))
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@classmethod
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def commandline(cls, args):
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"""Configure remote system"""
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# FIXME: Refactor relict - remove later
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log = logging.getLogger("cdist")
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# No new child process if only one host at a time.
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if args.parallel == 1:
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log.debug("Only 1 parallel process, doing it sequentially")
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args.parallel = 0
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if args.parallel or args.jobs:
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# If parallel execution then also log process id
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cdist.log.setupParallelLogging()
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log = logging.getLogger("cdist")
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if args.parallel:
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import signal
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signal.signal(signal.SIGTERM, mp_sig_handler)
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signal.signal(signal.SIGHUP, mp_sig_handler)
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cls._check_and_prepare_args(args)
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failed_hosts = []
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time_start = time.time()
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cls.construct_remote_exec_copy_patterns(args)
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base_root_path = cls.create_base_root_path(args.out_path)
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hostcnt = 0
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cfg = cdist.configuration.Configuration(args)
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configuration = cfg.get_config(section='GLOBAL')
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if args.tag or args.all_tagged_hosts:
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inventory.determine_default_inventory_dir(args, configuration)
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if args.all_tagged_hosts:
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inv_list = inventory.InventoryList(
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hosts=None, istag=True, hostfile=None,
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db_basedir=args.inventory_dir)
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else:
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inv_list = inventory.InventoryList(
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hosts=args.host, istag=True, hostfile=args.hostfile,
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db_basedir=args.inventory_dir,
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has_all_tags=args.has_all_tags)
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it = inv_list.entries()
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else:
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it = itertools.chain(cls.hosts(args.host),
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cls.hosts(args.hostfile))
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process_args = []
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if args.parallel:
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log.trace("Processing hosts in parallel")
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else:
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log.trace("Processing hosts sequentially")
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for entry in it:
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if isinstance(entry, tuple):
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# if configuring by specified tags
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host = entry[0]
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host_tags = entry[1]
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else:
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# if configuring by host then check inventory for tags
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host = entry
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inventory.determine_default_inventory_dir(args, configuration)
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inv_list = inventory.InventoryList(
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hosts=(host,), db_basedir=args.inventory_dir)
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inv = tuple(inv_list.entries())
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if inv:
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# host is present in inventory and has tags
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host_tags = inv[0][1]
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else:
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# host is not present in inventory or has no tags
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host_tags = None
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host_base_path, hostdir = cls.create_host_base_dirs(
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host, base_root_path)
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log.debug("Base root path for target host \"{}\" is \"{}\"".format(
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host, host_base_path))
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hostcnt += 1
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if args.parallel:
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pargs = (host, host_tags, host_base_path, hostdir, args, True,
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configuration)
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log.trace(("Args for multiprocessing operation "
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"for host {}: {}".format(host, pargs)))
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process_args.append(pargs)
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else:
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try:
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cls.onehost(host, host_tags, host_base_path, hostdir,
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args, parallel=False,
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configuration=configuration)
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except cdist.Error as e:
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failed_hosts.append(host)
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if args.parallel and len(process_args) == 1:
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log.debug("Only 1 host for parallel processing, doing it "
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"sequentially")
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try:
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cls.onehost(*process_args[0])
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except cdist.Error as e:
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failed_hosts.append(host)
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elif args.parallel:
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log.trace("Multiprocessing start method is {}".format(
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multiprocessing.get_start_method()))
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log.trace(("Starting multiprocessing Pool for {} "
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"parallel host operation".format(args.parallel)))
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results = mp_pool_run(cls.onehost,
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process_args,
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jobs=args.parallel)
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log.trace(("Multiprocessing for parallel host operation "
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"finished"))
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log.trace("Multiprocessing for parallel host operation "
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"results: %s", results)
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failed_hosts = [host for host, result in results if not result]
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time_end = time.time()
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log.verbose("Total processing time for %s host(s): %s", hostcnt,
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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 configure the following hosts: " +
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" ".join(failed_hosts))
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elif not args.out_path:
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# If tmp out path created then remove it, but only if no failed
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# hosts.
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shutil.rmtree(base_root_path)
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@classmethod
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def _resolve_ssh_control_path(cls):
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base_path = tempfile.mkdtemp()
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cls._register_path_for_removal(base_path)
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control_path = os.path.join(base_path, "s")
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return control_path
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@classmethod
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def _resolve_remote_cmds(cls, args):
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if (args.remote_exec_pattern or
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args.remote_copy_pattern or
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args.remote_cmds_cleanup_pattern):
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control_path = cls._resolve_ssh_control_path()
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# If we constructed patterns for remote commands then there is
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# placeholder for ssh ControlPath, format it and we have unique
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# ControlPath for each host.
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#
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# If not then use args.remote_exec/copy that user specified.
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if args.remote_exec_pattern:
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remote_exec = args.remote_exec_pattern.format(control_path)
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else:
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remote_exec = args.remote_exec
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if args.remote_copy_pattern:
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remote_copy = args.remote_copy_pattern.format(control_path)
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else:
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remote_copy = args.remote_copy
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if args.remote_cmds_cleanup_pattern:
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remote_cmds_cleanup = args.remote_cmds_cleanup_pattern.format(
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control_path)
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else:
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remote_cmds_cleanup = ""
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return (remote_exec, remote_copy, remote_cmds_cleanup, )
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@classmethod
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def onehost(cls, host, host_tags, host_base_path, host_dir_name, args,
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parallel, configuration, remove_remote_files_dirs=False):
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"""Configure ONE system.
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If operating in parallel then return tuple (host, True|False, )
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so that main process knows for which host function was successful.
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"""
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log = logging.getLogger(host)
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try:
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remote_exec, remote_copy, cleanup_cmd = cls._resolve_remote_cmds(
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args)
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log.debug("remote_exec for host \"{}\": {}".format(
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host, remote_exec))
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log.debug("remote_copy for host \"{}\": {}".format(
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host, remote_copy))
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target_host = ipaddr.resolve_target_addresses(host)
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log.debug("target_host for host \"{}\": {}".format(
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host, target_host))
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local = cdist.exec.local.Local(
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target_host=target_host,
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target_host_tags=host_tags,
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base_root_path=host_base_path,
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host_dir_name=host_dir_name,
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initial_manifest=args.manifest,
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add_conf_dirs=args.conf_dir,
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cache_path_pattern=args.cache_path_pattern,
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quiet_mode=args.quiet,
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configuration=configuration,
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exec_path=sys.argv[0])
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remote = cdist.exec.remote.Remote(
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target_host=target_host,
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remote_exec=remote_exec,
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remote_copy=remote_copy,
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base_path=args.remote_out_path,
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quiet_mode=args.quiet,
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archiving_mode=args.use_archiving,
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configuration=configuration,
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stdout_base_path=local.stdout_base_path,
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stderr_base_path=local.stderr_base_path)
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cleanup_cmds = []
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if cleanup_cmd:
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cleanup_cmds.append(cleanup_cmd)
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c = cls(local, remote, dry_run=args.dry_run, jobs=args.jobs,
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cleanup_cmds=cleanup_cmds,
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remove_remote_files_dirs=remove_remote_files_dirs)
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c.run()
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cls._remove_paths()
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except cdist.Error as e:
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log.error(e)
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if parallel:
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return (host, False, )
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else:
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raise
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if parallel:
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return (host, True, )
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@staticmethod
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def create_base_root_path(out_path=None):
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if out_path:
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base_root_path = out_path
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else:
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base_root_path = tempfile.mkdtemp()
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return base_root_path
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@staticmethod
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def create_host_base_dirs(host, base_root_path):
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hostdir = cdist.str_hash(host)
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host_base_path = os.path.join(base_root_path, hostdir)
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return (host_base_path, hostdir)
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def run(self):
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"""Do what is most often done: deploy & cleanup"""
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start_time = time.time()
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self.log.info("Starting {} run".format(
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'dry' if self.dry_run else 'configuration'))
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self._init_files_dirs()
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self.explorer.run_global_explorers(self.local.global_explorer_out_path)
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try:
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self.manifest.run_initial_manifest(self.local.initial_manifest)
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except cdist.Error as e:
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which = "init"
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stderr_path = os.path.join(self.local.stderr_base_path, which)
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raise cdist.InitialManifestError(self.local.initial_manifest,
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stderr_path, e)
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self.iterate_until_finished()
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self.cleanup()
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self._remove_files_dirs()
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self.local.save_cache(start_time)
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self.log.info("Finished {} run in {:.2f} seconds".format(
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'dry' if self.dry_run else 'successful',
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time.time() - start_time))
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def cleanup(self):
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self.log.debug("Running cleanup commands")
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for cleanup_cmd in self.cleanup_cmds:
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cmd = cleanup_cmd.split()
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cmd.append(self.local.target_host[0])
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try:
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if self.log.getEffectiveLevel() <= logging.DEBUG:
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quiet_mode = False
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else:
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quiet_mode = True
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self.local.run(cmd, return_output=False, save_output=False,
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quiet_mode=quiet_mode)
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except cdist.Error as e:
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# Log warning but continue.
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self.log.warning("Cleanup command failed: %s", e)
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def object_list(self):
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"""Short name for object list retrieval"""
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for cdist_object in core.CdistObject.list_objects(
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self.local.object_path, self.local.type_path,
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self.local.object_marker_name):
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if cdist_object.cdist_type.is_install:
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self.log.debug(("Running in config mode, ignoring install "
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"object: {0}").format(cdist_object))
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else:
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yield cdist_object
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def iterate_once(self):
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"""
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Iterate over the objects once - helper method for
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iterate_until_finished
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"""
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if self.jobs:
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objects_changed = self._iterate_once_parallel()
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else:
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objects_changed = self._iterate_once_sequential()
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return objects_changed
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def _iterate_once_sequential(self):
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self.log.debug("Iteration in sequential mode")
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objects_changed = False
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for cdist_object in self.object_list():
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try:
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if cdist_object.requirements_unfinished(
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cdist_object.requirements):
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"""We cannot do anything for this poor object"""
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continue
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if cdist_object.state == core.CdistObject.STATE_UNDEF:
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"""Prepare the virgin object"""
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self.object_prepare(cdist_object)
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objects_changed = True
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if cdist_object.requirements_unfinished(
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cdist_object.autorequire):
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"""The previous step created objects we depend on -
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wait for them
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"""
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continue
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if cdist_object.state == core.CdistObject.STATE_PREPARED:
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self.object_run(cdist_object)
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objects_changed = True
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except cdist.Error as e:
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raise cdist.CdistObjectError(cdist_object, e)
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return objects_changed
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def _iterate_once_parallel(self):
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self.log.debug("Iteration in parallel mode in {} jobs".format(
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self.jobs))
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objects_changed = False
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cargo = []
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for cdist_object in self.object_list():
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if cdist_object.requirements_unfinished(cdist_object.requirements):
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"""We cannot do anything for this poor object"""
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continue
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if cdist_object.state == core.CdistObject.STATE_UNDEF:
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"""Prepare the virgin object"""
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# self.object_prepare(cdist_object)
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# objects_changed = True
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cargo.append(cdist_object)
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n = len(cargo)
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if n == 1:
|
|
self.log.debug("Only one object, preparing sequentially")
|
|
self.object_prepare(cargo[0])
|
|
objects_changed = True
|
|
elif cargo:
|
|
self.log.trace("Multiprocessing start method is {}".format(
|
|
multiprocessing.get_start_method()))
|
|
|
|
self.log.trace("Multiprocessing cargo: %s", cargo)
|
|
|
|
cargo_types = set()
|
|
for c in cargo:
|
|
cargo_types.add(c.cdist_type)
|
|
self.log.trace("Multiprocessing cargo_types: %s", cargo_types)
|
|
nt = len(cargo_types)
|
|
if nt == 1:
|
|
self.log.debug(("Only one type, transfering explorers "
|
|
"sequentially"))
|
|
self.explorer.transfer_type_explorers(cargo_types.pop())
|
|
else:
|
|
self.log.trace(("Starting multiprocessing Pool for {} "
|
|
"parallel transfering types' explorers".format(
|
|
nt)))
|
|
args = [
|
|
(ct, ) for ct in cargo_types
|
|
]
|
|
mp_pool_run(self.explorer.transfer_type_explorers, args,
|
|
jobs=self.jobs)
|
|
self.log.trace(("Multiprocessing for parallel transfering "
|
|
"types' explorers finished"))
|
|
|
|
self.log.trace(("Starting multiprocessing Pool for {} parallel "
|
|
"objects preparation".format(n)))
|
|
args = [
|
|
(c, False, ) for c in cargo
|
|
]
|
|
mp_pool_run(self.object_prepare, args, jobs=self.jobs)
|
|
self.log.trace(("Multiprocessing for parallel object "
|
|
"preparation finished"))
|
|
objects_changed = True
|
|
|
|
del cargo[:]
|
|
for cdist_object in self.object_list():
|
|
if cdist_object.requirements_unfinished(cdist_object.requirements):
|
|
"""We cannot do anything for this poor object"""
|
|
continue
|
|
|
|
if cdist_object.state == core.CdistObject.STATE_PREPARED:
|
|
if cdist_object.requirements_unfinished(
|
|
cdist_object.autorequire):
|
|
"""The previous step created objects we depend on -
|
|
wait for them
|
|
"""
|
|
continue
|
|
|
|
# self.object_run(cdist_object)
|
|
# objects_changed = True
|
|
|
|
# put objects in chuncks of distinct types
|
|
# so that there is no more than one object
|
|
# of the same type in one chunk because there is a
|
|
# possibility of object's process locking which
|
|
# prevents parallel execution at remote
|
|
# and do this only for nonparallel marked types
|
|
for chunk in cargo:
|
|
for obj in chunk:
|
|
if (obj.cdist_type == cdist_object.cdist_type and
|
|
cdist_object.cdist_type.is_nonparallel):
|
|
break
|
|
else:
|
|
chunk.append(cdist_object)
|
|
break
|
|
else:
|
|
chunk = [cdist_object, ]
|
|
cargo.append(chunk)
|
|
|
|
for chunk in cargo:
|
|
self.log.trace("Running chunk: %s", chunk)
|
|
n = len(chunk)
|
|
if n == 1:
|
|
self.log.debug("Only one object, running sequentially")
|
|
self.object_run(chunk[0])
|
|
objects_changed = True
|
|
elif chunk:
|
|
self.log.trace("Multiprocessing start method is {}".format(
|
|
multiprocessing.get_start_method()))
|
|
self.log.trace(("Starting multiprocessing Pool for {} "
|
|
"parallel object run".format(n)))
|
|
args = [
|
|
(c, ) for c in chunk
|
|
]
|
|
mp_pool_run(self.object_run, args, jobs=self.jobs)
|
|
self.log.trace(("Multiprocessing for parallel object "
|
|
"run finished"))
|
|
objects_changed = True
|
|
|
|
return objects_changed
|
|
|
|
def _open_logger(self):
|
|
self.log = logging.getLogger(self.local.target_host[0])
|
|
|
|
# logger is not pickable, so remove it when we pickle
|
|
def __getstate__(self):
|
|
state = self.__dict__.copy()
|
|
if 'log' in state:
|
|
del state['log']
|
|
return state
|
|
|
|
# recreate logger when we unpickle
|
|
def __setstate__(self, state):
|
|
self.__dict__.update(state)
|
|
self._open_logger()
|
|
|
|
def iterate_until_finished(self):
|
|
"""
|
|
Go through all objects and solve them
|
|
one after another
|
|
"""
|
|
|
|
objects_changed = True
|
|
|
|
while objects_changed:
|
|
objects_changed = self.iterate_once()
|
|
|
|
# Check whether all objects have been finished
|
|
unfinished_objects = []
|
|
for cdist_object in self.object_list():
|
|
if not cdist_object.state == cdist_object.STATE_DONE:
|
|
unfinished_objects.append(cdist_object)
|
|
|
|
if unfinished_objects:
|
|
info_string = []
|
|
|
|
for cdist_object in unfinished_objects:
|
|
|
|
requirement_names = []
|
|
autorequire_names = []
|
|
|
|
for requirement in cdist_object.requirements_unfinished(
|
|
cdist_object.requirements):
|
|
requirement_names.append(requirement.name)
|
|
|
|
for requirement in cdist_object.requirements_unfinished(
|
|
cdist_object.autorequire):
|
|
autorequire_names.append(requirement.name)
|
|
|
|
requirements = "\n ".join(requirement_names)
|
|
autorequire = "\n ".join(autorequire_names)
|
|
info_string.append(("%s requires:\n"
|
|
" %s\n"
|
|
"%s ""autorequires:\n"
|
|
" %s" % (
|
|
cdist_object.name,
|
|
requirements, cdist_object.name,
|
|
autorequire)))
|
|
|
|
raise cdist.UnresolvableRequirementsError(
|
|
("The requirements of the following objects could not be "
|
|
"resolved:\n%s") % ("\n".join(info_string)))
|
|
|
|
def object_prepare(self, cdist_object, transfer_type_explorers=True):
|
|
"""Prepare object: Run type explorer + manifest"""
|
|
self.log.verbose("Preparing object {}".format(cdist_object.name))
|
|
self.log.verbose(
|
|
"Running manifest and explorers for " + cdist_object.name)
|
|
self.explorer.run_type_explorers(cdist_object, transfer_type_explorers)
|
|
self.manifest.run_type_manifest(cdist_object)
|
|
cdist_object.state = core.CdistObject.STATE_PREPARED
|
|
|
|
def object_run(self, cdist_object):
|
|
"""Run gencode and code for an object"""
|
|
|
|
self.log.verbose("Running object " + cdist_object.name)
|
|
if cdist_object.state == core.CdistObject.STATE_DONE:
|
|
raise cdist.Error(("Attempting to run an already finished "
|
|
"object: %s"), cdist_object)
|
|
|
|
# Generate
|
|
self.log.debug("Generating code for %s" % (cdist_object.name))
|
|
cdist_object.code_local = self.code.run_gencode_local(cdist_object)
|
|
cdist_object.code_remote = self.code.run_gencode_remote(cdist_object)
|
|
if cdist_object.code_local or cdist_object.code_remote:
|
|
cdist_object.changed = True
|
|
|
|
# Execute
|
|
if cdist_object.code_local or cdist_object.code_remote:
|
|
self.log.info("Processing %s" % (cdist_object.name))
|
|
if not self.dry_run:
|
|
if cdist_object.code_local:
|
|
self.log.trace("Executing local code for %s"
|
|
% (cdist_object.name))
|
|
self.code.run_code_local(cdist_object)
|
|
if cdist_object.code_remote:
|
|
self.log.trace("Executing remote code for %s"
|
|
% (cdist_object.name))
|
|
self.code.transfer_code_remote(cdist_object)
|
|
self.code.run_code_remote(cdist_object)
|
|
|
|
# Mark this object as done
|
|
self.log.trace("Finishing run of " + cdist_object.name)
|
|
cdist_object.state = core.CdistObject.STATE_DONE
|