forked from ungleich-public/cdist
173 lines
6.3 KiB
Python
173 lines
6.3 KiB
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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#
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# 2010-2013 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 logging
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import os
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import shutil
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import time
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import pprint
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import cdist
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from cdist import core
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class ConfigInstall(object):
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"""Cdist main class to hold arbitrary data"""
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def __init__(self, context, dry_run=False):
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self.context = context
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self.log = logging.getLogger(self.context.target_host)
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self.dry_run = dry_run
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self.explorer = core.Explorer(self.context.target_host, self.context.local, self.context.remote)
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self.manifest = core.Manifest(self.context.target_host, self.context.local)
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self.code = core.Code(self.context.target_host, self.context.local, self.context.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.context.local.create_files_dirs()
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self.context.remote.create_files_dirs()
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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._init_files_dirs()
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self.explorer.run_global_explorers(self.context.local.global_explorer_out_path)
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self.manifest.run_initial_manifest(self.context.initial_manifest)
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self.iterate_until_finished()
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self.context.local.save_cache()
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self.log.info("Finished successful run in %s seconds", time.time() - start_time)
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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(self.context.local.object_path,
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self.context.local.type_path):
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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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objects_changed = False
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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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if cdist_object.requirements_unfinished(cdist_object.autorequire):
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"""The previous step created objects we depend on - wait for them"""
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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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return objects_changed
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def iterate_until_finished(self):
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"""
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Go through all objects and solve them
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one after another
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"""
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objects_changed = True
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while objects_changed:
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objects_changed = self.iterate_once()
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# Check whether all objects have been finished
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unfinished_objects = []
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for cdist_object in self.object_list():
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if not cdist_object.state == cdist_object.STATE_DONE:
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unfinished_objects.append(cdist_object)
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if unfinished_objects:
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info_string = []
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for cdist_object in unfinished_objects:
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requirement_names = []
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autorequire_names = []
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for requirement in cdist_object.requirements_unfinished(cdist_object.requirements):
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requirement_names.append(requirement.name)
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for requirement in cdist_object.requirements_unfinished(cdist_object.autorequire):
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autorequire_names.append(requirement.name)
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requirements = ", ".join(requirement_names)
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autorequire = ", ".join(autorequire_names)
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info_string.append("%s requires: %s autorequires: %s" % (cdist_object.name, requirements, autorequire))
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raise cdist.UnresolvableRequirementsError("The requirements of the following objects could not be resolved: %s" %
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("; ".join(info_string)))
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def object_prepare(self, cdist_object):
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"""Prepare object: Run type explorer + manifest"""
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self.log.info("Running manifest and explorers for " + cdist_object.name)
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self.explorer.run_type_explorers(cdist_object)
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self.manifest.run_type_manifest(cdist_object)
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cdist_object.state = core.CdistObject.STATE_PREPARED
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def object_run(self, cdist_object, dry_run=False):
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"""Run gencode and code for an object"""
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self.log.debug("Trying to run object %s" % (cdist_object.name))
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if cdist_object.state == core.CdistObject.STATE_DONE:
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raise cdist.Error("Attempting to run an already finished object: %s", cdist_object)
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cdist_type = cdist_object.cdist_type
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# Generate
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self.log.info("Generating and executing code for %s" % (cdist_object.name))
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cdist_object.code_local = self.code.run_gencode_local(cdist_object)
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cdist_object.code_remote = self.code.run_gencode_remote(cdist_object)
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if cdist_object.code_local or cdist_object.code_remote:
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cdist_object.changed = True
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# Execute
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if not self.dry_run:
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if cdist_object.code_local:
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self.code.run_code_local(cdist_object)
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if cdist_object.code_remote:
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self.code.transfer_code_remote(cdist_object)
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self.code.run_code_remote(cdist_object)
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else:
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self.log.info("Skipping code execution due to DRY RUN")
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# Mark this object as done
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self.log.debug("Finishing run of " + cdist_object.name)
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cdist_object.state = core.CdistObject.STATE_DONE
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