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repos: factor git-cmds out of a common Repo implementation

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This creates an interface that could also be used to support other
version control systems.

Signed-off-by: Henning Schild <henning.schild@siemens.com>
This commit is contained in:
Henning Schild 2018-01-05 16:00:30 +01:00 committed by Daniel Wagner
parent 6a85296836
commit c47b511d34
1 changed files with 41 additions and 21 deletions
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62
kas/repos.py
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@ -86,7 +86,7 @@ class Repo:
disable_operations = False
if url is None:
# No git operation on repository
# No version control operation on repository
if path is None:
path = Repo.get_root_path(os.path.dirname(config.filename),
config.environ)
@ -120,9 +120,9 @@ class Repo:
return path
class GitRepo(Repo):
class RepoImpl(Repo):
"""
Provides the git implementations for a Repo.
Provides a generic implementation for a Repo.
"""
@asyncio.coroutine
@ -135,14 +135,11 @@ class GitRepo(Repo):
if not os.path.exists(self.path):
os.makedirs(os.path.dirname(self.path), exist_ok=True)
gitsrcdir = os.path.join(config.get_repo_ref_dir() or '',
self.qualified_name)
logging.debug('Looking for repo ref dir in %s', gitsrcdir)
sdir = os.path.join(config.get_repo_ref_dir() or '',
self.qualified_name)
logging.debug('Looking for repo ref dir in %s', sdir)
cmd = ['git', 'clone', '-q', self.url, self.path]
if config.get_repo_ref_dir() and os.path.exists(gitsrcdir):
cmd.extend(['--reference', gitsrcdir])
(retc, _) = yield from run_cmd_async(cmd,
(retc, _) = yield from run_cmd_async(self.clone_cmd(sdir, config),
env=config.environ,
cwd=config.kas_work_dir)
if retc == 0:
@ -154,9 +151,7 @@ class GitRepo(Repo):
return 0
# Does refspec exist in the current repository?
(retc, output) = yield from run_cmd_async(['git',
'cat-file', '-t',
self.refspec],
(retc, output) = yield from run_cmd_async(self.contains_refspec_cmd(),
env=config.environ,
cwd=self.path,
fail=False,
@ -167,8 +162,7 @@ class GitRepo(Repo):
return retc
# No it is missing, try to fetch
(retc, output) = yield from run_cmd_async(['git',
'fetch', '--all'],
(retc, output) = yield from run_cmd_async(self.fetch_cmd(),
env=config.environ,
cwd=self.path,
fail=False)
@ -187,7 +181,7 @@ class GitRepo(Repo):
return
# Check if repos is dirty
(_, output) = run_cmd(['git', 'diff', '--shortstat'],
(_, output) = run_cmd(self.is_dirty_cmd(),
env=config.environ, cwd=self.path,
fail=False)
if output:
@ -195,8 +189,7 @@ class GitRepo(Repo):
return
# Check if current HEAD is what in the config file is defined.
(_, output) = run_cmd(['git', 'rev-parse',
'--verify', 'HEAD'],
(_, output) = run_cmd(self.current_rev_cmd(),
env=config.environ, cwd=self.path)
if output.strip() == self.refspec:
@ -204,6 +197,33 @@ class GitRepo(Repo):
'refspec. nothing to do', self.name)
return
run_cmd(['git', 'checkout', '-q',
'{refspec}'.format(refspec=self.refspec)],
cwd=self.path)
run_cmd(self.checkout_cmd(), cwd=self.path)
class GitRepo(RepoImpl):
"""
Provides the git implementations for a Repo.
"""
# pylint: disable=no-self-use,missing-docstring
def clone_cmd(self, gitsrcdir, config):
cmd = ['git', 'clone', '-q', self.url, self.path]
if config.get_repo_ref_dir() and os.path.exists(gitsrcdir):
cmd.extend(['--reference', gitsrcdir])
return cmd
def contains_refspec_cmd(self):
return ['git', 'cat-file', '-t', self.refspec]
def fetch_cmd(self):
return ['git', 'fetch', '--all']
def is_dirty_cmd(self):
return ['git', 'diff', '--shortstat']
def current_rev_cmd(self):
return ['git', 'rev-parse', '--verify', 'HEAD']
def checkout_cmd(self):
return ['git', 'checkout', '-q',
'{refspec}'.format(refspec=self.refspec)]