fancsali/cdist-backup
1
0
Fork 0
Code Issues Pull requests Projects Releases Wiki Activity

new feature: dependency resolver

Browse source
This commit is contained in:
Steven Armstrong 2012-01-19 07:51:02 +01:00
commit 252ae5ea56
22 changed files with 271 additions and 45 deletions
Download patch file Download diff file Expand all files Collapse all files

37
lib/cdist/config_install.py
View file

@ -27,9 +27,12 @@ import shutil
import sys
import tempfile
import time
import itertools
import pprint
import cdist
from cdist import core
from cdist import resolver
class ConfigInstall(object):
@ -105,29 +108,12 @@ class ConfigInstall(object):
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.Object.STATE_RUNNING:
# FIXME: resolve dependency circle / show problem source
raise cdist.Error("Detected circular dependency in " + cdist_object.name)
elif cdist_object.state == core.Object.STATE_DONE:
self.log.debug("Ignoring run of already finished object %s", cdist_object)
return
else:
cdist_object.state = core.Object.STATE_RUNNING
if cdist_object.state == core.Object.STATE_DONE:
# 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.type
for requirement in cdist_object.requirements:
self.log.debug("Object %s requires %s", cdist_object, requirement)
required_object = cdist_object.object_from_name(requirement)
# The user may have created dependencies without satisfying them
if not required_object.exists:
raise cdist.Error(cdist_object.name + " requires non-existing " + required_object.name)
else:
self.log.debug("Required object %s exists", required_object.name)
self.object_run(required_object)
# Generate
self.log.info("Generating and executing code for " + cdist_object.name)
cdist_object.code_local = self.code.run_gencode_local(cdist_object)
@ -149,7 +135,14 @@ class ConfigInstall(object):
def stage_run(self):
"""The final (and real) step of deployment"""
self.log.info("Generating and executing code")
for cdist_object in core.Object.list_objects(self.local.object_path,
self.local.type_path):
objects = core.Object.list_objects(
self.local.object_path,
self.local.type_path)
dependency_resolver = resolver.DependencyResolver(objects)
self.log.debug(pprint.pformat(dependency_resolver.graph))
for cdist_object in dependency_resolver:
self.log.debug("Run object: %s", cdist_object)
self.object_run(cdist_object)