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# Copyright (C) 2012-2013 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.
import cliapp
import os
import morphlib
class ShowDependenciesPlugin(cliapp.Plugin):
def enable(self):
self.app.add_subcommand('show-dependencies',
self.show_dependencies,
arg_synopsis='(REPO REF MORPHOLOGY)...')
def disable(self):
pass
def show_dependencies(self, args):
'''Dumps the dependency tree of all input morphologies.
Command line arguments:
* `REPO` is a git repository URL.
* `REF` is a branch or other commit reference in that repository.
* `FILENAME` is a morphology filename at that ref.
This command analyses a system morphology and produces a listing
of build dependencies of the constituent components.
'''
if not os.path.exists(self.app.settings['cachedir']):
os.mkdir(self.app.settings['cachedir'])
cachedir = os.path.join(self.app.settings['cachedir'], 'gits')
tarball_base_url = self.app.settings['tarball-server']
repo_resolver = morphlib.repoaliasresolver.RepoAliasResolver(
self.app.settings['repo-alias'])
lrc = morphlib.localrepocache.LocalRepoCache(
self.app, cachedir, repo_resolver, tarball_base_url)
remote_url = morphlib.util.get_git_resolve_cache_server(
self.app.settings)
if remote_url:
rrc = morphlib.remoterepocache.RemoteRepoCache(
remote_url, repo_resolver)
else:
rrc = None
build_command = morphlib.buildcommand.BuildCommand(self.app)
# traverse the morphs to list all the sources
for repo, ref, filename in self.app.itertriplets(args):
morph = filename[:-len('.morph')]
self.app.output.write('dependency graph for %s|%s|%s:\n' %
(repo, ref, morph))
srcpool = build_command.create_source_pool(repo, ref, filename)
root_artifact = build_command.resolve_artifacts(srcpool)
for artifact in reversed(root_artifact.walk()):
self.app.output.write(' %s\n' % artifact)
for dependency in sorted(artifact.dependencies, key=str):
self.app.output.write(' -> %s\n' % dependency)
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