70 lines
2.5 KiB
Python
70 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 check_output, CalledProcessError, STDOUT
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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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if filter_installed_packages(['git']) != []:
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install(['git'])
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if filter_installed_packages(['git']) != []:
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raise NotImplementedError('Unable to install git')
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class GitUrlFetchHandler(BaseFetchHandler):
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"""Handler for git branches via generic and github URLs."""
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def can_handle(self, source):
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url_parts = self.parse_url(source)
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# TODO (mattyw) no support for ssh git@ yet
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if url_parts.scheme not in ('http', 'https', 'git', ''):
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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, '.git'))
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else:
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return True
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def clone(self, source, dest, branch="master", depth=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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if os.path.exists(dest):
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cmd = ['git', '-C', dest, 'pull', source, branch]
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else:
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cmd = ['git', 'clone', source, dest, '--branch', branch]
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if depth:
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cmd.extend(['--depth', depth])
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check_output(cmd, stderr=STDOUT)
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def install(self, source, branch="master", dest=None, depth=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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try:
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self.clone(source, dest_dir, branch, depth)
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except CalledProcessError as e:
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raise UnhandledSource(e)
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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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