685 lines
24 KiB
Python
Executable file
685 lines
24 KiB
Python
Executable file
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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#
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# 2010-2011 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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import argparse
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import datetime
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import logging
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import multiprocessing
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import os
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import subprocess
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import shutil
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import stat
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import sys
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import tempfile
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BANNER = """
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.. . .x+=:. s
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dF @88> z` ^% :8
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'88bu. %8P . <k .88
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. '*88888bu . .@8Ned8" :888ooo
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.udR88N ^"*8888N .@88u .@^%8888" -*8888888
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<888'888k beWE "888L ''888E` x88: `)8b. 8888
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9888 'Y" 888E 888E 888E 8888N=*8888 8888
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9888 888E 888E 888E %8" R88 8888
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9888 888E 888F 888E @8Wou 9% .8888Lu=
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?8888u../ .888N..888 888& .888888P` ^%888*
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"8888P' `"888*"" R888" ` ^"F 'Y"
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"P' "" ""
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"""
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# Given paths from installation
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REMOTE_BASE_DIR = "/var/lib/cdist"
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REMOTE_CONF_DIR = os.path.join(REMOTE_BASE_DIR, "conf")
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REMOTE_OBJECT_DIR = os.path.join(REMOTE_BASE_DIR, "object")
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REMOTE_TYPE_DIR = os.path.join(REMOTE_CONF_DIR, "type")
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REMOTE_GLOBAL_EXPLORER_DIR = os.path.join(REMOTE_CONF_DIR, "explorer")
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CODE_HEADER = "#!/bin/sh -e\n"
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DOT_CDIST = ".cdist"
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VERSION = "2.0.0"
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logging.basicConfig(level=logging.INFO, format='%(levelname)s: %(message)s')
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log = logging.getLogger()
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class TypeEmulator:
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def __init__(self, name):
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self.name = name
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self.type = os.path.basename(name)
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def type_emulator(self):
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type = basename(sys.argv[0])
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type_is_singleton(type)
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# Check object id
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# Prevent double slash if id begins with /
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# Record parameter: opt_file="${opt#--}"
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# [ $# -ge 1 ] || __cdist_usage "Missing value for $opt"
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# echo "${value}" > "${__cdist_parameter_dir}/${opt_file}"
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# Record requirements
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# echo $requirement >> "$(__cdist_object_require "$__cdist_object_self")"
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# Ensure required parameters are given
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# Ensure that only optional or required parameters are given
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# [ "$is_valid" ] || __cdist_usage "Unknown parameter $parameter"
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# Merge object (creating twice with the same parameter + requirements == allowed)
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# diff -ru "${__cdist_new_object_dir}/${__cdist_name_parameter}
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# # Add "I was here message"
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# _cdist_object_source_add "${__cdist_object_dir}"
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class Cdist:
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"""Cdist main class to hold arbitrary data"""
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def __init__(self, target_host,
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initial_manifest=False, remote_user="root",
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home=None, debug=False):
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self.target_host = target_host
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self.remote_prefix = ["ssh", "root@" + self.target_host]
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# Setup directory paths
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self.temp_dir = tempfile.mkdtemp()
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self.debug = debug
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if home:
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self.base_dir = home
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else:
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self.base_dir = os.path.abspath(os.path.join(os.path.dirname(__file__), os.pardir))
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self.conf_dir = os.path.join(self.base_dir, "conf")
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self.cache_base_dir = os.path.join(self.base_dir, "cache")
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self.cache_dir = os.path.join(self.cache_base_dir, self.target_host)
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self.global_explorer_dir = os.path.join(self.conf_dir, "explorer")
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self.lib_dir = os.path.join(self.base_dir, "lib")
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self.manifest_dir = os.path.join(self.conf_dir, "manifest")
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self.type_base_dir = os.path.join(self.conf_dir, "type")
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self.out_dir = os.path.join(self.temp_dir, "out")
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os.mkdir(self.out_dir)
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self.global_explorer_out_dir = os.path.join(self.out_dir, "explorer")
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os.mkdir(self.global_explorer_out_dir)
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self.object_base_dir = os.path.join(self.out_dir, "object")
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# Setup binary directory + contents
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self.bin_dir = os.path.join(self.out_dir, "bin")
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os.mkdir(self.bin_dir)
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self.link_type_to_emulator()
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# List of type explorers transferred
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self.type_explorers_transferred = {}
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# objects
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self.objects_prepared = []
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self.remote_user = remote_user
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# Mostly static, but can be overwritten on user demand
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if initial_manifest:
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self.initial_manifest = initial_manifest
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else:
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self.initial_manifest = os.path.join(self.manifest_dir, "init")
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def cleanup(self):
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# Do not use in __del__:
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# http://docs.python.org/reference/datamodel.html#customization
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# "other globals referenced by the __del__() method may already have been deleted
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# or in the process of being torn down (e.g. the import machinery shutting down)"
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#
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log.debug("Saving" + self.temp_dir + "to " + self.cache_dir)
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# Remove previous cache
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if os.path.exists(self.cache_dir):
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shutil.rmtree(self.cache_dir)
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os.rename(self.temp_dir, self.cache_dir)
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def exit_error(self, *args):
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log.error(*args)
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sys.exit(1)
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def remote_mkdir(self, directory):
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"""Create directory on remote side"""
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self.run_or_fail(["mkdir", "-p", directory], remote=True)
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def remote_cat(filename):
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"""Use cat on the remote side for output"""
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self.run_or_fail(["cat", filename], remote=True)
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def shell_run_or_debug_fail(self, script, *args, **kargs):
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# Manually execute /bin/sh, because sh -e does what we want
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# and sh -c -e does not exit if /bin/false called
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args[0][:0] = [ "/bin/sh", "-e" ]
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remote = False
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if "remote" in kargs:
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if kargs["remote"]:
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args[0][:0] = self.remote_prefix
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remote = true
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del kargs["remote"]
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log.debug("Shell exec cmd: %s", args)
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log.debug("Shell exec env: %s", kargs['env'])
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try:
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subprocess.check_call(*args, **kargs)
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except subprocess.CalledProcessError:
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log.error("Code that raised the error:\n")
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if remote:
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remote_cat(script)
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else:
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script_fd = open(script)
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print(script_fd.read())
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script_fd.close()
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self.exit_error("Non-Zero exit code exit of " + " ".join(*args))
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def run_or_fail(self, *args, **kargs):
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if "remote" in kargs:
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if kargs["remote"]:
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args[0][:0] = self.remote_prefix
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del kargs["remote"]
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log.debug("Exec: " + " ".join(*args))
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try:
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subprocess.check_call(*args, **kargs)
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except subprocess.CalledProcessError:
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self.exit_error("Command failed: " + " ".join(*args))
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def remove_remote_dir(self, destination):
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self.run_or_fail(["rm", "-rf", destination], remote=True)
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def transfer_dir(self, source, destination):
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"""Transfer directory and previously delete the remote destination"""
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self.remove_remote_dir(destination)
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self.run_or_fail(["scp", "-qr", source,
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self.remote_user + "@" +
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self.target_host + ":" +
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destination])
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def transfer_file(self, source, destination):
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"""Transfer file"""
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self.run_or_fail(["scp", "-q", source,
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self.remote_user + "@" +
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self.target_host + ":" +
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destination])
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def global_explorer_output_path(self, explorer):
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"""Returns path of the output for a global explorer"""
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return os.path.join(self.global_explorer_out_dir, explorer)
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def type_explorer_output_dir(self, cdist_object):
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"""Returns and creates dir of the output for a type explorer"""
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dir = os.path.join(self.object_dir(cdist_object), "explorer")
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if not os.path.isdir(dir):
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os.mkdir(dir)
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return dir
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def remote_global_explorer_path(self, explorer):
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"""Returns path to the remote explorer"""
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return os.path.join(REMOTE_GLOBAL_EXPLORER_DIR, explorer)
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def list_global_explorers(self):
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"""Return list of available explorers"""
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return os.listdir(self.global_explorer_dir)
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def list_type_explorers(self, type):
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"""Return list of available explorers for a specific type"""
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dir = self.type_explorer_dir(type)
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if os.path.isdir(dir):
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list = os.listdir(dir)
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else:
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list = []
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log.debug("Explorers for %s in %s: %s", type, dir, list)
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return list
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def list_types(self):
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return os.listdir(self.type_base_dir)
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def list_object_paths(self, starting_point):
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"""Return list of paths of existing objects"""
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object_paths = []
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for content in os.listdir(starting_point):
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full_path = os.path.join(starting_point, content)
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if os.path.isdir(full_path):
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object_paths.extend(self.list_object_paths(starting_point = full_path))
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# Directory contains .cdist -> is an object
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if content == DOT_CDIST:
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object_paths.append(starting_point)
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return object_paths
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def get_type_from_object(self, cdist_object):
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"""Returns the first part (i.e. type) of an object"""
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return cdist_object.split(os.sep)[0]
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def get_object_id_from_object(self, cdist_object):
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"""Returns everything but the first part (i.e. object_id) of an object"""
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return os.sep.join(cdist_object.split(os.sep)[1:])
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def object_dir(self, cdist_object):
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"""Returns the full path to the object (including .cdist)"""
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return os.path.join(self.object_base_dir, cdist_object, DOT_CDIST)
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def remote_object_dir(self, cdist_object):
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"""Returns the remote full path to the object (including .cdist)"""
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return os.path.join(REMOTE_OBJECT_DIR, cdist_object, DOT_CDIST)
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def object_parameter_dir(self, cdist_object):
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"""Returns the dir to the object parameter"""
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return os.path.join(self.object_dir(cdist_object), "parameter")
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def remote_object_parameter_dir(self, cdist_object):
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"""Returns the remote dir to the object parameter"""
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return os.path.join(self.remote_object_dir(cdist_object), "parameter")
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def object_code_paths(self, cdist_object):
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"""Return paths to code scripts of object"""
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return [os.path.join(self.object_dir(cdist_object), "code-local"),
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os.path.join(self.object_dir(cdist_object), "code-remote")]
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def list_objects(self):
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"""Return list of existing objects"""
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objects = []
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if os.path.isdir(self.object_base_dir):
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object_paths = self.list_object_paths(self.object_base_dir)
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for path in object_paths:
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objects.append(os.path.relpath(path, self.object_base_dir))
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return objects
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def type_dir(self, type):
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"""Return directory the type"""
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return os.path.join(self.type_base_dir, type)
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def type_explorer_dir(self, type):
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"""Return directory that holds the explorers of a type"""
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return os.path.join(self.type_dir(type), "explorer")
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def type_gencode_paths(self, type):
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"""Return paths to gencode scripts of type"""
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return [os.path.join(self.type_base_dir, type, "gencode-local"),
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os.path.join(self.type_base_dir, type, "gencode-remote")]
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def type_manifest_path(self, type):
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"""Return path to manifest of type"""
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return os.path.join(self.type_base_dir, type, "manifest")
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def remote_type_explorer_dir(self, type):
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"""Return remote directory that holds the explorers of a type"""
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return os.path.join(REMOTE_TYPE_DIR, type, "explorer")
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def transfer_object_parameter(self, cdist_object):
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"""Transfer the object parameter to the remote destination"""
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# Create base path before using mkdir -p
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self.remote_mkdir(self.remote_object_parameter_dir(cdist_object))
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# Synchronise parameter dir afterwards
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self.transfer_dir(self.object_parameter_dir(cdist_object),
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self.remote_object_parameter_dir(cdist_object))
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def transfer_global_explorers(self):
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"""Transfer the global explorers"""
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self.remote_mkdir(REMOTE_GLOBAL_EXPLORER_DIR)
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self.transfer_dir(self.global_explorer_dir, REMOTE_GLOBAL_EXPLORER_DIR)
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def transfer_type_explorers(self, type):
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"""Transfer explorers of a type, but only once"""
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if type in self.type_explorers_transferred:
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log.debug("Skipping retransfer for explorers of %s", type)
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return
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else:
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# Do not retransfer
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self.type_explorers_transferred[type] = 1
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src = self.type_explorer_dir(type)
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remote_base = os.path.join(REMOTE_TYPE_DIR, type)
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dst = self.remote_type_explorer_dir(type)
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# Only continue, if there is at least the directory
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if os.path.isdir(src):
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# Ensure that the path exists
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self.remote_mkdir(remote_base)
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self.transfer_dir(src, dst)
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def link_type_to_emulator(self):
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"""Link type names to cdist-type-emulator"""
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for type in self.list_types():
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source = os.path.join(self.lib_dir, "cdist-type-emulator")
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destination = os.path.join(self.bin_dir, type)
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log.debug("Linking %s to %s", source, destination)
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os.symlink(source, destination)
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def run_global_explores(self):
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"""Run global explorers"""
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explorers = self.list_global_explorers()
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if(len(explorers) == 0):
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self.exit_error("No explorers found in", self.global_explorer_dir)
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self.transfer_global_explorers()
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for explorer in explorers:
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output = self.global_explorer_output_path(explorer)
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output_fd = open(output, mode='w')
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cmd = []
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cmd.append("__explorer=" + REMOTE_GLOBAL_EXPLORER_DIR)
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cmd.append(self.remote_global_explorer_path(explorer))
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self.run_or_fail(cmd, stdout=output_fd, remote=True)
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output_fd.close()
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def run_type_explorer(self, cdist_object):
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"""Run type specific explorers for objects"""
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# Based on bin/cdist-object-explorer-run
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# Transfering explorers for this type
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type = self.get_type_from_object(cdist_object)
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self.transfer_type_explorers(type)
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cmd = []
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cmd.append("__explorer=" + REMOTE_GLOBAL_EXPLORER_DIR)
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cmd.append("__type_explorer=" + self.remote_type_explorer_dir(type))
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cmd.append("__object=" + self.remote_object_dir(cdist_object))
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cmd.append("__object_id=" + self.get_object_id_from_object(cdist_object))
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cmd.append("__object_fq=" + cdist_object)
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# Need to transfer at least the parameters for objects to be useful
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self.transfer_object_parameter(cdist_object)
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explorers = self.list_type_explorers(type)
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for explorer in explorers:
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remote_cmd = cmd + [os.path.join(self.remote_type_explorer_dir(type), explorer)]
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output = os.path.join(self.type_explorer_output_dir(cdist_object), explorer)
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output_fd = open(output, mode='w')
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log.debug("%s exploring %s using %s storing to %s",
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cdist_object, explorer, remote_cmd, output)
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self.run_or_fail(remote_cmd, stdout=output_fd, remote=True)
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output_fd.close()
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def init_deploy(self):
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"""Ensure the base directories are cleaned up"""
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log.debug("Creating clean directory structure")
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self.remove_remote_dir(REMOTE_BASE_DIR)
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self.remote_mkdir(REMOTE_BASE_DIR)
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def run_initial_manifest(self):
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"""Run the initial manifest"""
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env = { "__manifest" : self.manifest_dir }
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self.run_manifest(self.initial_manifest, extra_env=env)
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def run_type_manifest(self, cdist_object):
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"""Run manifest for a specific object"""
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type = self.get_type_from_object(cdist_object)
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manifest = self.type_manifest_path(type)
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log.debug("%s: Running %s", cdist_object, manifest)
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if os.path.exists(manifest):
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env = { "__object" : self.object_dir(cdist_object),
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"__object_id": self.get_object_id_from_object(cdist_object),
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"__object_fq": cdist_object,
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"__type": self.type_dir(type)
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}
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self.run_manifest(manifest, extra_env=env)
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def run_manifest(self, manifest, extra_env=None):
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"""Run a manifest"""
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log.debug("Running manifest %s, env=%s", manifest, extra_env)
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env = os.environ.copy()
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env['PATH'] = self.bin_dir + ":" + env['PATH']
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env['__target_host'] = self.target_host
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env['__global'] = self.out_dir
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# Legacy stuff to make cdist-type-emulator work
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env['__cdist_conf_dir'] = self.conf_dir
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env['__cdist_core_dir'] = os.path.join(self.base_dir, "core")
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env['__cdist_local_base_dir'] = self.temp_dir
|
|
env['__cdist_manifest'] = self.initial_manifest
|
|
|
|
# Other environment stuff
|
|
if extra_env:
|
|
env.update(extra_env)
|
|
|
|
self.shell_run_or_debug_fail(manifest, [manifest], env=env)
|
|
|
|
def list_object_requirements(self, cdist_object):
|
|
"""Return list of requirements for specific object"""
|
|
file=os.path.join(self.object_dir(cdist_object), "require")
|
|
|
|
if os.path.isfile(file):
|
|
file_fd = open(file, "r")
|
|
requirements = file_fd.readlines()
|
|
file_fd.close()
|
|
|
|
# Remove \n from all lines
|
|
requirements = map(lambda s: s.strip(), requirements)
|
|
|
|
log.debug("Requirements for %s: %s", cdist_object, requirements)
|
|
else:
|
|
requirements = []
|
|
|
|
return requirements
|
|
|
|
def object_run(self, cdist_object, mode):
|
|
"""Run gencode or code for an object"""
|
|
log.debug("Running %s from %s", mode, cdist_object)
|
|
requirements = self.list_object_requirements(cdist_object)
|
|
|
|
for requirement in requirements:
|
|
log.debug("Object %s requires %s", cdist_object, requirement)
|
|
self.object_run(requirement, mode=mode)
|
|
|
|
#
|
|
# Setup env Variable:
|
|
#
|
|
env = os.environ.copy()
|
|
env['__target_host'] = self.target_host
|
|
env['__global'] = self.out_dir
|
|
env["__object"] = self.object_dir(cdist_object)
|
|
env["__object_id"] = self.get_object_id_from_object(cdist_object)
|
|
env["__object_fq"] = cdist_object
|
|
|
|
if mode == "gencode":
|
|
paths = self.type_gencode_paths(self.get_type_from_object(cdist_object))
|
|
for bin in paths:
|
|
if os.path.isfile(bin):
|
|
# omit "gen" from gencode and
|
|
outfile=os.path.join(self.object_dir(cdist_object),
|
|
os.path.basename(bin)[3:])
|
|
|
|
outfile_fd = open(outfile, "w")
|
|
|
|
# Need to flush to ensure our write is done before stdout write
|
|
outfile_fd.write(CODE_HEADER)
|
|
outfile_fd.flush()
|
|
|
|
self.shell_run_or_debug_fail(bin, [bin], env=env, stdout=outfile_fd)
|
|
outfile_fd.close()
|
|
|
|
status = os.stat(outfile)
|
|
|
|
# Remove output if empty, else make it executable
|
|
if status.st_size == len(CODE_HEADER):
|
|
os.unlink(outfile)
|
|
else:
|
|
# Add header and make executable - identically to 0o700
|
|
os.chmod(outfile, stat.S_IXUSR | stat.S_IRUSR | stat.S_IWUSR)
|
|
|
|
if mode == "code":
|
|
local_dir = self.object_dir(cdist_object)
|
|
remote_dir = self.remote_object_dir(cdist_object)
|
|
|
|
bin = os.path.join(local_dir, "code-local")
|
|
if os.path.isfile(bin):
|
|
self.run_or_fail([bin], remote=False)
|
|
|
|
|
|
local_remote_code = os.path.join(local_dir, "code-remote")
|
|
remote_remote_code = os.path.join(remote_dir, "code-remote")
|
|
if os.path.isfile(local_remote_code):
|
|
self.transfer_file(local_remote_code, remote_remote_code)
|
|
self.run_or_fail([remote_remote_code], remote=True)
|
|
|
|
def deploy_to(self):
|
|
"""Mimic the old deploy to: Deploy to one host"""
|
|
log.info("Deploying to " + self.target_host)
|
|
time_start = datetime.datetime.now()
|
|
self.init_deploy()
|
|
self.run_global_explores()
|
|
self.run_initial_manifest()
|
|
|
|
old_objects = []
|
|
objects = self.list_objects()
|
|
|
|
# Continue process until no new objects are created anymore
|
|
while old_objects != objects:
|
|
log.debug("Prepare stage")
|
|
old_objects = list(objects)
|
|
for cdist_object in objects:
|
|
if cdist_object in self.objects_prepared:
|
|
log.debug("Skipping rerun of object %s", cdist_object)
|
|
continue
|
|
else:
|
|
self.run_type_explorer(cdist_object)
|
|
self.run_type_manifest(cdist_object)
|
|
self.objects_prepared.append(cdist_object)
|
|
|
|
objects = self.list_objects()
|
|
|
|
log.debug("Actual run objects")
|
|
# Now do the final steps over the existing objects
|
|
for cdist_object in objects:
|
|
log.debug("Run object: %s", cdist_object)
|
|
self.object_run(cdist_object, mode="gencode")
|
|
self.object_run(cdist_object, mode="code")
|
|
|
|
time_end = datetime.datetime.now()
|
|
duration = time_end - time_start
|
|
log.info("Finished run of %s in %s seconds",
|
|
self.target_host,
|
|
duration.total_seconds())
|
|
|
|
def deploy_and_cleanup(self):
|
|
"""Do what is most often done: deploy & cleanup"""
|
|
self.deploy_to()
|
|
self.cleanup()
|
|
|
|
def banner(args):
|
|
"""Guess what :-)"""
|
|
print(BANNER)
|
|
sys.exit(0)
|
|
|
|
def config(args):
|
|
"""Configure remote system"""
|
|
process = {}
|
|
|
|
if len(args.host) == 0:
|
|
parser.print_help()
|
|
sys.exit(1)
|
|
|
|
time_start = datetime.datetime.now()
|
|
|
|
for host in args.host:
|
|
c = Cdist(host, initial_manifest=args.manifest, home=args.cdist_home, debug=args.debug)
|
|
if args.parallel:
|
|
log.debug("Starting child process for %s", host)
|
|
process[host] = multiprocessing.Process(target=c.deploy_and_cleanup)
|
|
process[host].start()
|
|
log.debug("After process for %s", host)
|
|
else:
|
|
c.deploy_and_cleanup()
|
|
|
|
if args.parallel:
|
|
for p in process.keys():
|
|
log.debug("Joining %s", p)
|
|
process[p].join()
|
|
|
|
time_end = datetime.datetime.now()
|
|
log.info("Total processing time for %s host(s): %s", len(args.host),
|
|
(time_end - time_start).total_seconds())
|
|
|
|
if __name__ == "__main__":
|
|
# Construct parser others can reuse
|
|
parser = {}
|
|
# Options _all_ parsers have in common
|
|
parser['most'] = argparse.ArgumentParser(add_help=False,
|
|
epilog="Get cdist at http://www.nico.schottelius.org/software/cdist/")
|
|
parser['most'].add_argument('-d', '--debug',
|
|
help='Set log level to debug', action='store_true')
|
|
parser['most'].add_argument('-V', '--version',
|
|
help='Show version', action='version',
|
|
version='%(prog)s ' + VERSION)
|
|
|
|
# Main subcommand parser
|
|
parser['main'] = argparse.ArgumentParser(description='cdist ' + VERSION,
|
|
parents=[parser['most']])
|
|
parser['sub'] = parser['main'].add_subparsers()
|
|
|
|
parser['banner'] = parser['sub'].add_parser('banner')
|
|
parser['banner'].set_defaults(func=banner)
|
|
|
|
parser['config'] = parser['sub'].add_parser('config',
|
|
parents=[parser['most']])
|
|
parser['config'].add_argument('host', nargs='+',
|
|
help='one or more hosts to operate on')
|
|
parser['config'].add_argument('-c', '--cdist-home',
|
|
help='Change cdist home (default: .. from bin directory)',
|
|
action='store')
|
|
parser['config'].add_argument('-i', '--initial-manifest',
|
|
help='Path to a cdist manifest',
|
|
dest='manifest', required=False)
|
|
parser['config'].add_argument('-p', '--parallel',
|
|
help='Operate on multiple hosts in parallel',
|
|
action='store_true', dest='parallel')
|
|
parser['config'].add_argument('-s', '--sequential',
|
|
help='Operate on multiple hosts sequentially (default)',
|
|
action='store_false', dest='parallel')
|
|
parser['config'].set_defaults(func=config)
|
|
|
|
args = parser['main'].parse_args(sys.argv[1:])
|
|
|
|
# Most subcommands have --debug, so handle it here
|
|
if 'debug' in args:
|
|
if args.debug:
|
|
logging.root.setLevel(logging.DEBUG)
|
|
log.debug(args)
|
|
|
|
try:
|
|
args.func(args)
|
|
except KeyboardInterrupt:
|
|
sys.exit(0)
|