cdist/cdist/config_install.py

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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
#
# 2010-2012 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 stat
import shutil
import sys
import tempfile
import time
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import itertools
import pprint
import cdist
from cdist import core
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from cdist import resolver
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)
# For easy access
self.local = context.local
self.remote = context.remote
# Initialise local directory structure
self.local.create_files_dirs()
# Initialise remote directory structure
self.remote.create_files_dirs()
self.explorer = core.Explorer(self.context.target_host, self.local, self.remote)
self.manifest = core.Manifest(self.context.target_host, self.local)
self.code = core.Code(self.context.target_host, self.local, self.remote)
def cleanup(self):
# FIXME: move to local?
destination = os.path.join(self.local.cache_path, self.context.target_host)
self.log.debug("Saving " + self.local.out_path + " to " + destination)
if os.path.exists(destination):
shutil.rmtree(destination)
shutil.move(self.local.out_path, destination)
def deploy_to(self):
"""Mimic the old deploy to: Deploy to one host"""
self.stage_prepare()
self.stage_run()
def deploy_and_cleanup(self):
"""Do what is most often done: deploy & cleanup"""
start_time = time.time()
self.deploy_to()
self.cleanup()
self.log.info("Finished successful run in %s seconds",
time.time() - start_time)
def stage_prepare(self):
"""Do everything for a deploy, minus the actual code stage"""
self.explorer.run_global_explorers(self.local.global_explorer_out_path)
self.manifest.run_initial_manifest(self.context.initial_manifest)
self.log.info("Running object manifests and type explorers")
# Continue process until no new objects are created anymore
new_objects_created = True
while new_objects_created:
new_objects_created = False
for cdist_object in core.CdistObject.list_objects(self.local.object_path,
self.local.type_path):
if cdist_object.state == core.CdistObject.STATE_PREPARED:
self.log.debug("Skipping re-prepare of object %s", cdist_object)
continue
else:
self.object_prepare(cdist_object)
new_objects_created = True
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):
"""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:
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# TODO: remove once we are sure that this really never happens.
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 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
def stage_run(self):
"""The final (and real) step of deployment"""
self.log.info("Generating and executing code")
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objects = core.CdistObject.list_objects(
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self.local.object_path,
self.local.type_path)
dependency_resolver = resolver.DependencyResolver(objects)
self.log.debug(pprint.pformat(dependency_resolver.dependencies))
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for cdist_object in dependency_resolver:
self.log.debug("Run object: %s", cdist_object)
self.object_run(cdist_object)