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