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# -*- coding: utf-8 -*-
# Copyright © 2015 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, see <http://www.gnu.org/licenses/>.
import logging
import os
import shutil
import cliapp
import morphlib
class DirectoryAlreadyExistsError(morphlib.Error):
def __init__(self, chunk, dirname):
self.msg = ('Failed to clone repo for %s, destination directory %s '
'already exists.' % (chunk, dirname))
class GetRepoPlugin(cliapp.Plugin):
def enable(self):
self.app.add_subcommand(
'get-repo', self.get_repo, arg_synopsis='CHUNK [PATH]')
self.app.settings.string(['ref', 'r'],
'ref to checkout in the cloned repo',
metavar='REF', default='',
group='get-repo options')
def disable(self):
pass
def extract_repo(self, repo_cache, repo, sha1, destdir,
submodules_map=None): #pragma: no cover
self.app.status(msg='Extracting %(source)s into %(target)s',
source=repo.original_name,
target=destdir)
gd = morphlib.gitdir.checkout_from_cached_repo(repo, sha1, destdir)
morphlib.git.reset_workdir(self.app.runcmd, destdir)
# Configure the "origin" remote to use the upstream git repository,
# and not the locally cached copy.
resolver = morphlib.repoaliasresolver.RepoAliasResolver(
self.app.settings['repo-alias'])
remote = gd.get_remote('origin')
remote.set_fetch_url(resolver.pull_url(repo.url))
remote.set_push_url(resolver.push_url(repo.original_name))
# Check and handle submodules
submodules = morphlib.git.Submodules(repo.dirname, sha1,
self.app.runcmd)
try:
submodules.load()
except morphlib.git.NoModulesFileError:
return []
else:
tuples = []
for sub in submodules:
if submodules_map and sub.name in submodules_map:
url = submodules_map[sub.name]['url']
else:
url = sub.url
cached_repo = repo_cache.get_updated_repo(url, sub.commit)
sub_dir = os.path.join(destdir, sub.path)
tuples.append((cached_repo, sub.commit, sub_dir))
return tuples
def _get_chunk_dirname(self, path, definitions_repo, spec):
if path:
return path
else:
return definitions_repo.relative_path_to_chunk(spec['repo'])
def get_repo(self, args):
'''Checkout a component repository.
Command line arguments:
* `CHUNK` is the name of a chunk
* `PATH` is the path at which the checkout will be located.
* `REF` is the ref to checkout. By default this is the ref defined in
the stratum containing the chunk.
This makes a local checkout of CHUNK in PATH (or in the current system
branch if PATH isn't given).
'''
if len(args) < 1:
raise cliapp.AppException('morph get-repo needs a chunk '
'as parameter: `morph get-repo '
'CHUNK [PATH]')
chunk_name = args[0]
path = None
if len(args) > 1:
path = os.path.abspath(args[1])
ref = self.app.settings['ref']
def checkout_chunk(morph, chunk_spec, definitions_version):
dirname = self._get_chunk_dirname(path, definitions_repo,
chunk_spec)
if not os.path.exists(dirname):
os.makedirs(dirname)
self.app.status(
msg='Checking out ref %(ref)s of %(chunk)s in '
'%(stratum)s stratum',
ref=ref or chunk_spec['ref'], chunk=chunk_spec['name'],
stratum=morph['name'])
repo_cache = morphlib.util.new_repo_cache(self.app)
cached_repo = repo_cache.get_updated_repo(chunk_spec['repo'],
chunk_spec['ref'])
submodules = {}
if definitions_version >= 8:
submodules = chunk_spec.get('submodules', {})
repo_cache.ensure_submodules(
cached_repo, chunk_spec['ref'], submodules)
try:
todo = [(cached_repo, ref or chunk_spec['ref'], dirname)]
while todo:
repo, sha1, destdir = todo.pop()
todo += self.extract_repo(repo_cache, repo, sha1,
destdir, submodules)
except morphlib.gitdir.InvalidRefError:
raise cliapp.AppException(
"Cannot get '%s', repo has no commit at ref %s."
% (chunk_spec['name'], ref or chunk_spec['ref']))
except BaseException as e:
logging.debug('Removing %s due to %s', dirname, e)
shutil.rmtree(dirname)
raise
else:
raise DirectoryAlreadyExistsError(chunk_spec['name'], dirname)
return dirname
strata = set()
found = 0
definitions_repo = morphlib.definitions_repo.open(
'.', search_for_root=True, app=self.app)
version = definitions_repo.get_version()
self.app.status(msg='Loading in all morphologies')
for morph in definitions_repo.load_all_morphologies():
if morph['kind'] == 'stratum':
for chunk in morph['chunks']:
if chunk['name'] == chunk_name:
if found >= 1:
self.app.status(
msg='Chunk %(chunk)s also found in '
'%(stratum)s stratum.',
chunk=chunk_name, stratum=morph['name'],
chatty=True)
else:
chunk_dirname = checkout_chunk(morph, chunk,
version)
strata.add(morph['name'])
found = found + 1
if found == 0:
self.app.status(
msg="No chunk %(chunk)s found. If you want to create one, add "
"an entry to a stratum morph file.", chunk=chunk_name)
if found >= 1:
self.app.status(
msg="Chunk %(chunk)s source is available at %(dir)s",
chunk=chunk_name, dir=chunk_dirname)
if found > 1:
self.app.status(
msg="Note that this chunk appears in more than one stratum: "
"%(strata)s",
strata=', '.join(strata))
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