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Viewing changes to charms/precise/webui/hooks/charmhelpers/fetch/bzrurl.py

  • Committer: Joe Talbott
  • Date: 2014-01-27 14:54:08 UTC
  • mfrom: (126.3.8 webui)
  • mto: This revision was merged to the branch mainline in revision 161.
  • Revision ID: joe.talbott@canonical.com-20140127145408-zpubebx02y6oumxq
merge doanac's cleanup branch

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charms/precise/webui/hooks/charmhelpers/fetch/bzrurl.py
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import os
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from charmhelpers.fetch import (
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    BaseFetchHandler,
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    UnhandledSource
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)
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from charmhelpers.core.host import mkdir
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try:
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    from bzrlib.branch import Branch
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except ImportError:
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    from charmhelpers.fetch import apt_install
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    apt_install("python-bzrlib")
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    from bzrlib.branch import Branch
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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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        else:
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            return True
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    def branch(self, source, dest):
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        url_parts = self.parse_url(source)
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        # If we use lp:branchname scheme we need to load plugins
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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 url_parts.scheme == "lp":
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            from bzrlib.plugin import load_plugins
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            load_plugins()
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        try:
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            remote_branch = Branch.open(source)
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            remote_branch.bzrdir.sprout(dest).open_branch()
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        except Exception as e:
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            raise e
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    def install(self, source):
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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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        dest_dir = os.path.join(os.environ.get('CHARM_DIR'), "fetched", branch_name)
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        if not os.path.exists(dest_dir):
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            mkdir(dest_dir, perms=0755)
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        try:
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            self.branch(source, dest_dir)
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        except OSError as e:
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            raise UnhandledSource(e.strerror)
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        return dest_dir