cdist/cdist/config_install.py

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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
#
# 2010-2013 Nico Schottelius (nico-cdist at schottelius.org)
#
# This file is part of cdist.
#
# cdist is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# cdist is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with cdist. If not, see <http://www.gnu.org/licenses/>.
#
#
import logging
import os
import shutil
import time
2012-01-19 06:51:02 +00:00
import pprint
import cdist
from cdist import core
class ConfigInstall(object):
"""Cdist main class to hold arbitrary data"""
def __init__(self, context):
self.context = context
self.log = logging.getLogger(self.context.target_host)
self.explorer = core.Explorer(self.context.target_host, self.context.local, self.context.remote)
self.manifest = core.Manifest(self.context.target_host, self.context.local)
self.code = core.Code(self.context.target_host, self.context.local, self.context.remote)
# Add switch to disable code execution
self.dry_run = False
def _init_files_dirs(self):
"""Prepare files and directories for the run"""
self.context.local.create_files_dirs()
self.context.remote.create_files_dirs()
def run(self):
"""Do what is most often done: deploy & cleanup"""
start_time = time.time()
self._init_files_dirs()
self.explorer.run_global_explorers(self.context.local.global_explorer_out_path)
self.manifest.run_initial_manifest(self.context.initial_manifest)
self.iterate_until_finished()
self.context.local.save_cache()
self.log.info("Finished successful run in %s seconds", time.time() - start_time)
def object_list(self):
"""Short name for object list retrieval"""
for cdist_object in core.CdistObject.list_objects(self.context.local.object_path,
self.context.local.type_path):
yield cdist_object
def iterate_once(self):
"""
Iterate over the objects once - helper method for
iterate_until_finished
"""
objects_changed = False
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_UNDEF:
"""Prepare the virgin object"""
self.object_prepare(cdist_object)
objects_changed = True
if cdist_object.requirements_unfinished(cdist_object.autorequire):
"""The previous step created objects we depend on - wait for them"""
continue
if cdist_object.state == core.CdistObject.STATE_PREPARED:
self.object_run(cdist_object)
objects_changed = True
return objects_changed
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 = ", ".join(requirement_names)
autorequire = ", ".join(autorequire_names)
info_string.append("%s requires: %s autorequires: %s" % (cdist_object.name, requirements, autorequire))
raise cdist.Error("The requirements of the following objects could not be resolved: %s" %
("; ".join(info_string)))
def object_prepare(self, cdist_object):
"""Prepare object: Run type explorer + manifest"""
self.log.info("Running manifest and explorers for " + cdist_object.name)
self.explorer.run_type_explorers(cdist_object)
self.manifest.run_type_manifest(cdist_object)
cdist_object.state = core.CdistObject.STATE_PREPARED
def object_run(self, cdist_object, dry_run=False):
"""Run gencode and code for an object"""
self.log.debug("Trying to run 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)
cdist_type = cdist_object.cdist_type
# Generate
self.log.info("Generating and executing code for " + 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 not dry_run:
if cdist_object.code_local:
self.code.run_code_local(cdist_object)
if cdist_object.code_remote:
self.code.transfer_code_remote(cdist_object)
self.code.run_code_remote(cdist_object)
# Mark this object as done
self.log.debug("Finishing run of " + cdist_object.name)
cdist_object.state = core.CdistObject.STATE_DONE