def data(self):
"""The pack data object being used."""
if self._data is None:
self._data = PackData(self._data_path)
assert len(self.index) == len(self._data)
idx_stored_checksum = self.index.get_pack_checksum()
data_stored_checksum = self._data.get_stored_checksum()
if idx_stored_checksum != data_stored_checksum:
raise ChecksumMismatch(sha_to_hex(idx_stored_checksum),
sha_to_hex(data_stored_checksum))
return self._data
def send_pack(self, path, determine_wants, generate_pack_contents):
"""Upload a pack to a remote repository.
:param path: Repository path
:param generate_pack_contents: Function that can return the shas of the
objects to upload.
"""
old_refs, server_capabilities = self.read_refs()
new_refs = determine_wants(old_refs)
if not new_refs:
self.proto.write_pkt_line(None)
return {}
want = []
have = [x for x in old_refs.values() if not x == "0" * 40]
sent_capabilities = False
for refname in set(new_refs.keys() + old_refs.keys()):
old_sha1 = old_refs.get(refname, "0" * 40)
new_sha1 = new_refs.get(refname, "0" * 40)
if old_sha1 != new_sha1:
if sent_capabilities:
self.proto.write_pkt_line("%s %s %s" %
(old_sha1, new_sha1, refname))
else:
self.proto.write_pkt_line(
"%s %s %s\0%s" %
(old_sha1, new_sha1, refname, self.capabilities()))
sent_capabilities = True
if not new_sha1 in (have, "0" * 40):
want.append(new_sha1)
self.proto.write_pkt_line(None)
if not want:
return new_refs
objects = generate_pack_contents(have, want)
(entries, sha) = write_pack_data(self.proto.write_file(), objects,
len(objects))
# read the final confirmation sha
client_sha = self.proto.read(20)
if not client_sha in (None, "", sha):
raise ChecksumMismatch(sha, client_sha)
return new_refs
def check(self):
"""Check this object for internal consistency.
:raise ObjectFormatException: if the object is malformed in some way
:raise ChecksumMismatch: if the object was created with a SHA that does
not match its contents
"""
# TODO: if we find that error-checking during object parsing is a
# performance bottleneck, those checks should be moved to the class's
# check() method during optimization so we can still check the object
# when necessary.
old_sha = self.id
try:
self._deserialize(self.as_raw_chunks())
self._sha = None
new_sha = self.id
except Exception as e:
raise ObjectFormatException(e)
if old_sha != new_sha:
raise ChecksumMismatch(new_sha, old_sha)
:raise ChecksumMismatch: if the object was created with a SHA that does
not match its contents
"""
# TODO: if we find that error-checking during object parsing is a
# performance bottleneck, those checks should be moved to the class's
# check() method during optimization so we can still check the object
# when necessary.
old_sha = self.id
try:
self._deserialize(self.as_raw_chunks())
self._sha = None
new_sha = self.id
except Exception, e:
raise ObjectFormatException(e)
if old_sha != new_sha:
raise ChecksumMismatch(new_sha, old_sha)
def _header(self):
return object_header(self.type, self.raw_length())
def raw_length(self):
"""Returns the length of the raw string of this object."""
ret = 0
for chunk in self.as_raw_chunks():
ret += len(chunk)
return ret
def _make_sha(self):
ret = make_sha()
ret.update(self._header())
for chunk in self.as_raw_chunks():
def check_sha(self):
stored = self.f.read(20)
if stored != self.sha1.digest():
raise ChecksumMismatch(self.sha1.hexdigest(), sha_to_hex(stored))