228 lines
7.7 KiB
Python
Executable file
228 lines
7.7 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 logging
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import os
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import subprocess
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import shutil
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import sys
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import tempfile
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# Given paths from installation
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BASE_DIR = os.path.abspath(os.path.join(os.path.dirname(__file__), os.pardir))
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CONF_DIR = os.path.join(BASE_DIR, "conf")
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GLOBAL_EXPLORER_DIR = os.path.join(CONF_DIR, "explorer")
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LIB_DIR = os.path.join(BASE_DIR, "lib")
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MANIFEST_DIR = os.path.join(CONF_DIR, "manifest")
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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_GLOBAL_EXPLORER_DIR = os.path.join(REMOTE_CONF_DIR, "explorer")
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VERSION = "2.0.0"
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#class Context(object):
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#
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# def __init__(self, target_host):
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# self.target_host = target_host
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#
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# # class variable
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# user_selber_shuld_wenn_aendert = 'bla'
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#
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# # read only, aber statisch
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# @property
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# def remote_base_directory(self):
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# return "/var/lib/cdist"
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# @property.setter
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#
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# @property
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# def special_foo(self):
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# return 'foo/{0}'.format(self.target_host)
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#
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logging.basicConfig(level=logging.DEBUG, format='%(levelname)s: %(message)s')
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log = logging.getLogger()
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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, initial_manifest=False):
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self.target_host = target_host
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# log.info("foobar")
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# Setup directory paths
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self.temp_dir = tempfile.mkdtemp()
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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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# 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(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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print("I should cleanup " + self.temp_dir)
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# shutil.rmtree(self.temp_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 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].insert(0,"/bin/sh")
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args[0].insert(1,"-e")
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log.debug("Shell 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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script_fd = open(script)
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log.error("Code that raised the error:\n" + 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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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 remote_run_or_fail(self, *args, **kargs):
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"""Run something on the remote side and fail is something breaks"""
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newargs = ["ssh", "root@" + self.target_host]
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newargs.extend(*args)
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self.run_or_fail(newargs, **kargs)
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def remove_remote_dir(self, destination):
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self.remote_run_or_fail(["rm", "-rf", destination])
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def transfer_dir(self, source, destination):
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self.remove_remote_dir(destination)
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self.run_or_fail(["scp", "-qr", source, "root@" + self.target_host + ":" + 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 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(GLOBAL_EXPLORER_DIR)
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def transfer_global_explorers(self):
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self.transfer_dir(GLOBAL_EXPLORER_DIR, REMOTE_GLOBAL_EXPLORER_DIR)
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def global_explore(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", 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.remote_run_or_fail(cmd, stdout=output_fd)
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output_fd.close()
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def init_deploy(self):
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log.info("Creating clean directory structure")
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# Ensure there is no old stuff, neither local nor remote
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# remote_run_or_fail(hostname, ["rm -rf", "${__cdist_remote_base_dir}"])
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#
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# # Create base directories
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# remote_run_or_fail(hostname,["mkdir -p", "${__cdist_remote_base_dir}"])
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#
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# # Link configuraion source directory - consistent with remote
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# run_or_fail(["ln -sf", "$__cdist_conf_dir", "$__cdist_local_base_dir/$__cdist_name_conf_dir"])
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def run_initial_manifest(self):
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"""Run the initial manifest"""
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log.info("Running the initial manifest")
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env = os.environ.copy()
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env['__target_host'] = self.target_host
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self.shell_run_or_debug_fail(self.initial_manifest,
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[self.initial_manifest],
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env=env)
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def deploy_to(self):
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"""Mimic the old deploy to: Deploy to one host"""
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log.info("Deploying to host " + self.target_host)
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self.init_deploy()
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self.global_explore()
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self.run_initial_manifest()
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if __name__ == "__main__":
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parser = argparse.ArgumentParser(description='cdist ' + VERSION)
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parser.add_argument('host', nargs='+', help='one or more hosts to operate on')
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parser.add_argument('-d', '--debug', help='set log level to debug',
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action='store_true')
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parser.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.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.add_argument('-s', '--sequential',
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help='operate on multiple hosts sequentially',
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action='store_false', dest='parallel')
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args = parser.parse_args(sys.argv[1:])
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if args.debug:
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logging.root.setLevel(logging.DEBUG)
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try:
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log.debug(args)
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for host in args.host:
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c = Cdist(host, initial_manifest=args.manifest)
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c.deploy_to()
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c.cleanup()
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except KeyboardInterrupt:
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sys.exit(0)
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