182 lines
7.3 KiB
Python
182 lines
7.3 KiB
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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#
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# 2010-2012 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 stat
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import shutil
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import sys
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import tempfile
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import time
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import itertools
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import pprint
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import cdist
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from cdist import core
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from cdist import resolver
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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):
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self.context = context
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self.log = logging.getLogger(self.context.target_host)
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# Initialise local directory structure
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self.context.local.create_files_dirs()
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# Initialise remote directory structure
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self.context.remote.create_files_dirs()
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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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# Add switch to disable code execution
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self.dry_run = False
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def cleanup(self):
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# FIXME: move to local?
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destination = os.path.join(self.context.local.cache_path, self.context.target_host)
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self.log.debug("Saving " + self.context.local.out_path + " to " + destination)
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if os.path.exists(destination):
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shutil.rmtree(destination)
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shutil.move(self.context.local.out_path, destination)
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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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self.stage_prepare()
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self.stage_run()
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def deploy_and_cleanup(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.deploy_to()
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self.cleanup()
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self.log.info("Finished successful run in %s seconds",
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time.time() - start_time)
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def stage_prepare(self):
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"""Do everything for a deploy, minus the actual code stage"""
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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.log.info("Running object manifests and type explorers")
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# Continue process until no new objects are created anymore
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new_objects_created = True
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while new_objects_created:
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new_objects_created = False
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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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if cdist_object.state == core.CdistObject.STATE_PREPARED:
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self.log.debug("Skipping re-prepare of object %s", cdist_object)
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continue
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else:
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self.object_prepare(cdist_object)
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new_objects_created = True
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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 " + 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 " + 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 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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# 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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def stage_run(self):
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"""The final (and real) step of deployment"""
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self.log.info("Generating and executing code")
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# FIXME: think about parallel execution (same for stage_prepare)
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self.all_resolved = False
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while not self.all_resolved:
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self.stage_run_iterate()
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def stage_run_iterate(self):
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"""
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Run one iteration of the run
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To be repeated until all objects are done
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"""
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objects = list(core.CdistObject.list_objects(self.context.local.object_path, self.context.local.type_path))
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object_state_list=' '.join('%s:%s:%s:%s' % (o, o.state, o.all_requirements, o.satisfied_requirements) for o in objects)
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self.log.debug("Object state (name:state:requirements:satisfied): %s" % object_state_list)
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objects_changed = False
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self.all_resolved = True
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for cdist_object in objects:
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if not cdist_object.state == cdist_object.STATE_DONE:
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self.all_resolved = False
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self.log.debug("Object %s not done" % cdist_object.name)
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if cdist_object.satisfied_requirements:
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self.log.debug("Running object %s with satisfied requirements" % cdist_object.name)
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self.object_run(cdist_object, self.dry_run)
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objects_changed = True
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self.log.debug("All resolved: %s Objects changed: %s" % (self.all_resolved, objects_changed))
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# Not all are resolved, but nothing has been changed => bad dependencies!
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if not objects_changed and not self.all_resolved:
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# Create list of unfinished objects + their requirements for print
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evil_objects = []
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good_objects = []
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for cdist_object in objects:
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if not cdist_object.state == cdist_object.STATE_DONE:
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evil_objects.append("%s: required: %s, autorequired: %s" %
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(cdist_object.name, cdist_object.requirements, cdist_object.autorequire))
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else:
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evil_objects.append("%s (%s): required: %s, autorequired: %s" %
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(cdist_object.state, cdist_object.name,
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cdist_object.requirements, cdist_object.autorequire))
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errormessage = "Cannot solve requirements for the following objects: %s - solved: %s" % (",".join(evil_objects), ",".join(good_objects))
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raise cdist.Error(errormessage)
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