def __fetch_all(self):
try:
cmd(self.__bare_path(), [
"git", "fetch", "--unshallow", self.cache.repository,
self.__ref()
])
except subprocess.CalledProcessError:
# We may already have unshallowed this repository
pass
def __commit_exists(self):
try:
cmd(self.__bare_path(), [
"git", "cat-file", "-e", "{}^{{commit}}".format(self.revision)
])
return True
except subprocess.CalledProcessError as e:
log.debug(
"Did not find commit {} and instead got output: {}".format(
self.revision, e.output))
return False
def archive_ref(source, ref, destination):
try:
os.makedirs(destination)
except FileExistsError:
pass
cmd(
source,
[
"bash",
# Bash will run the following safe bash, and accept the defs
# of $1 and $2 via the following -s
"-c",
"git archive --format=tar \"$1\" | tar -x -C \"$2\"",
# Passing ref and destination this way is much safer than
# using interpolation
"-s",
ref,
destination
])
def make_archive(self):
if not self.__exists():
log.warning("Fetching tag '{}' from {}".format(
self.tag, self.cache.repository))
with self.cache.lock():
bare_path = self.__bare_path()
ref = "refs/tags/{}".format(self.tag)
setup_bare(bare_path)
try:
cmd(bare_path, [
"git", "fetch", "--depth=1", self.cache.repository, ref
])
except subprocess.CalledProcessError as e:
log.debug(
"Did not find tag {}, instead got output: {}".format(
self.tag, e.output))
raise NixError("tag-not-found",
"Tag {} not found".format(self.tag))
archive_ref(bare_path, "FETCH_HEAD", self.__archive_path())
return self.__archive_path()
def setup_bare(path):
if not os.path.isdir(path):
log.debug("About to init a bare repository at {}".format(path))
cmd(None, ["git", "init", "--bare", path])
def __deepen(self, depth):
cmd(self.__bare_path(), [
"git", "fetch", "--deepen",
str(depth), self.cache.repository,
self.__ref()
])