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# Copyright (C) 2012 Codethink Limited
#
# This program 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; version 2 of the License.
#
# This program 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 this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
class Artifact(object):
'''Represent a build result generated from a source.
Has the following properties:
* ``source`` -- the source from which the artifact is built
* ``name`` -- the name of the artifact
* ``cache_key`` -- a cache key to uniquely identify the artifact
* ``cache_id`` -- a dict describing the components of the cache key
* ``dependencies`` -- list of Artifacts that need to be built beforehand
* ``dependents`` -- list of Artifacts that need this Artifact to be built
The ``dependencies`` and ``dependents`` lists MUST be modified by
the ``add_dependencies`` and ``add_dependent`` methods only.
'''
def __init__(self, source, name):
self.source = source
self.name = name
self.cache_id = None
self.cache_key = None
self.dependencies = []
self.dependents = []
def add_dependency(self, artifact):
'''Add ``artifact`` to the dependency list.'''
if artifact not in self.dependencies:
self.dependencies.append(artifact)
artifact.dependents.append(self)
def depends_on(self, artifact):
'''Do we depend on ``artifact``?'''
return artifact in self.dependencies
def basename(self): # pragma: no cover
return '%s.%s.%s' % (self.cache_key,
self.source.morphology['kind'],
self.name)
def metadata_basename(self, metadata_name): # pragma: no cover
return '%s.%s.%s.%s' % (self.cache_key,
self.source.morphology['kind'],
self.name,
metadata_name)
def __str__(self): # pragma: no cover
return '%s|%s' % (self.source, self.name)
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