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# Copyright 2014-2015 Canonical Limited.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import os
from subprocess import check_call
from charmhelpers.fetch import (
BaseFetchHandler,
UnhandledSource,
filter_installed_packages,
install,
)
from charmhelpers.core.host import mkdir
if filter_installed_packages(['bzr']) != []:
install(['bzr'])
if filter_installed_packages(['bzr']) != []:
raise NotImplementedError('Unable to install bzr')
class BzrUrlFetchHandler(BaseFetchHandler):
"""Handler for bazaar branches via generic and lp URLs."""
def can_handle(self, source):
url_parts = self.parse_url(source)
if url_parts.scheme not in ('bzr+ssh', 'lp', ''):
return False
elif not url_parts.scheme:
return os.path.exists(os.path.join(source, '.bzr'))
else:
return True
def branch(self, source, dest, revno=None):
if not self.can_handle(source):
raise UnhandledSource("Cannot handle {}".format(source))
cmd_opts = []
if revno:
cmd_opts += ['-r', str(revno)]
if os.path.exists(dest):
cmd = ['bzr', 'pull']
cmd += cmd_opts
cmd += ['--overwrite', '-d', dest, source]
else:
cmd = ['bzr', 'branch']
cmd += cmd_opts
cmd += [source, dest]
check_call(cmd)
def install(self, source, dest=None, revno=None):
url_parts = self.parse_url(source)
branch_name = url_parts.path.strip("/").split("/")[-1]
if dest:
dest_dir = os.path.join(dest, branch_name)
else:
dest_dir = os.path.join(os.environ.get('CHARM_DIR'), "fetched",
branch_name)
if dest and not os.path.exists(dest):
mkdir(dest, perms=0o755)
try:
self.branch(source, dest_dir, revno)
except OSError as e:
raise UnhandledSource(e.strerror)
return dest_dir
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