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commit.py
484 lines | 15.3 KiB | text/x-python | PythonLexer
# Copyright (C) 2014-2023 RhodeCode GmbH
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License, version 3
# (only), as published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# This program is dual-licensed. If you wish to learn more about the
# RhodeCode Enterprise Edition, including its added features, Support services,
# and proprietary license terms, please see https://rhodecode.com/licenses/
"""
GIT commit module
"""
import io
import stat
import configparser
from itertools import chain
from zope.cachedescriptors.property import Lazy as LazyProperty
from rhodecode.lib.datelib import utcdate_fromtimestamp
from rhodecode.lib.str_utils import safe_bytes, safe_str
from rhodecode.lib.vcs.backends import base
from rhodecode.lib.vcs.exceptions import CommitError, NodeDoesNotExistError
from rhodecode.lib.vcs.nodes import (
FileNode, DirNode, NodeKind, RootNode, SubModuleNode,
ChangedFileNodesGenerator, AddedFileNodesGenerator,
RemovedFileNodesGenerator, LargeFileNode)
class GitCommit(base.BaseCommit):
"""
Represents state of the repository at single commit id.
"""
_filter_pre_load = [
# done through a more complex tree walk on parents
"affected_files",
# done through subprocess not remote call
"children",
# done through a more complex tree walk on parents
"status",
# mercurial specific property not supported here
"_file_paths",
# mercurial specific property not supported here
'obsolete',
# mercurial specific property not supported here
'phase',
# mercurial specific property not supported here
'hidden'
]
def __init__(self, repository, raw_id, idx, pre_load=None):
self.repository = repository
self._remote = repository._remote
# TODO: johbo: Tweak of raw_id should not be necessary
self.raw_id = safe_str(raw_id)
self.idx = idx
self._set_bulk_properties(pre_load)
# caches
self._stat_modes = {} # stat info for paths
self._paths = {} # path processed with parse_tree
self.nodes = {}
self._submodules = None
def _set_bulk_properties(self, pre_load):
if not pre_load:
return
pre_load = [entry for entry in pre_load
if entry not in self._filter_pre_load]
if not pre_load:
return
result = self._remote.bulk_request(self.raw_id, pre_load)
for attr, value in result.items():
if attr in ["author", "message"]:
if value:
value = safe_str(value)
elif attr == "date":
value = utcdate_fromtimestamp(*value)
elif attr == "parents":
value = self._make_commits(value)
elif attr == "branch":
value = self._set_branch(value)
self.__dict__[attr] = value
@LazyProperty
def _commit(self):
return self._remote[self.raw_id]
@LazyProperty
def _tree_id(self):
return self._remote[self._commit['tree']]['id']
@LazyProperty
def id(self):
return self.raw_id
@LazyProperty
def short_id(self):
return self.raw_id[:12]
@LazyProperty
def message(self):
return safe_str(self._remote.message(self.id))
@LazyProperty
def committer(self):
return safe_str(self._remote.author(self.id))
@LazyProperty
def author(self):
return safe_str(self._remote.author(self.id))
@LazyProperty
def date(self):
unix_ts, tz = self._remote.date(self.raw_id)
return utcdate_fromtimestamp(unix_ts, tz)
@LazyProperty
def status(self):
"""
Returns modified, added, removed, deleted files for current commit
"""
return self.changed, self.added, self.removed
@LazyProperty
def tags(self):
tags = [safe_str(name) for name,
commit_id in self.repository.tags.items()
if commit_id == self.raw_id]
return tags
@LazyProperty
def commit_branches(self):
branches = []
for name, commit_id in self.repository.branches.items():
if commit_id == self.raw_id:
branches.append(name)
return branches
def _set_branch(self, branches):
if branches:
# actually commit can have multiple branches in git
return safe_str(branches[0])
@LazyProperty
def branch(self):
branches = self._remote.branch(self.raw_id)
return self._set_branch(branches)
def _get_tree_id_for_path(self, path):
path = safe_str(path)
if path in self._paths:
return self._paths[path]
tree_id = self._tree_id
path = path.strip('/')
if path == '':
data = [tree_id, "tree"]
self._paths[''] = data
return data
tree_id, tree_type, tree_mode = \
self._remote.tree_and_type_for_path(self.raw_id, path)
if tree_id is None:
raise self.no_node_at_path(path)
self._paths[path] = [tree_id, tree_type]
self._stat_modes[path] = tree_mode
if path not in self._paths:
raise self.no_node_at_path(path)
return self._paths[path]
def _get_kind(self, path):
tree_id, type_ = self._get_tree_id_for_path(path)
if type_ == 'blob':
return NodeKind.FILE
elif type_ == 'tree':
return NodeKind.DIR
elif type_ == 'link':
return NodeKind.SUBMODULE
return None
def _assert_is_path(self, path):
path = self._fix_path(path)
if self._get_kind(path) != NodeKind.FILE:
raise CommitError(f"File does not exist for commit {self.raw_id} at '{path}'")
return path
def _get_file_nodes(self):
return chain(*(t[2] for t in self.walk()))
@LazyProperty
def parents(self):
"""
Returns list of parent commits.
"""
parent_ids = self._remote.parents(self.id)
return self._make_commits(parent_ids)
@LazyProperty
def children(self):
"""
Returns list of child commits.
"""
children = self._remote.children(self.raw_id)
return self._make_commits(children)
def _make_commits(self, commit_ids):
def commit_maker(_commit_id):
return self.repository.get_commit(commit_id=_commit_id)
return [commit_maker(commit_id) for commit_id in commit_ids]
def get_file_mode(self, path: bytes):
"""
Returns stat mode of the file at the given `path`.
"""
path = self._assert_is_path(path)
# ensure path is traversed
self._get_tree_id_for_path(path)
return self._stat_modes[path]
def is_link(self, path):
return stat.S_ISLNK(self.get_file_mode(path))
def is_node_binary(self, path):
tree_id, _ = self._get_tree_id_for_path(path)
return self._remote.is_binary(tree_id)
def node_md5_hash(self, path):
path = self._assert_is_path(path)
return self._remote.md5_hash(self.raw_id, path)
def get_file_content(self, path):
"""
Returns content of the file at given `path`.
"""
tree_id, _ = self._get_tree_id_for_path(path)
return self._remote.blob_as_pretty_string(tree_id)
def get_file_content_streamed(self, path):
tree_id, _ = self._get_tree_id_for_path(path)
stream_method = getattr(self._remote, 'stream:blob_as_pretty_string')
return stream_method(tree_id)
def get_file_size(self, path):
"""
Returns size of the file at given `path`.
"""
tree_id, _ = self._get_tree_id_for_path(path)
return self._remote.blob_raw_length(tree_id)
def get_path_history(self, path, limit=None, pre_load=None):
"""
Returns history of file as reversed list of `GitCommit` objects for
which file at given `path` has been modified.
"""
path = self._assert_is_path(path)
hist = self._remote.node_history(self.raw_id, path, limit)
return [
self.repository.get_commit(commit_id=commit_id, pre_load=pre_load)
for commit_id in hist]
def get_file_annotate(self, path, pre_load=None):
"""
Returns a generator of four element tuples with
lineno, commit_id, commit lazy loader and line
"""
result = self._remote.node_annotate(self.raw_id, path)
for ln_no, commit_id, content in result:
yield (
ln_no, commit_id,
lambda: self.repository.get_commit(commit_id=commit_id, pre_load=pre_load),
content)
def get_nodes(self, path, pre_load=None):
if self._get_kind(path) != NodeKind.DIR:
raise CommitError(
f"Directory does not exist for commit {self.raw_id} at '{path}'")
path = self._fix_path(path)
tree_id, _ = self._get_tree_id_for_path(path)
dirnodes = []
filenodes = []
# extracted tree ID gives us our files...
str_path = safe_str(path) # libgit operates on bytes
for name, stat_, id_, type_ in self._remote.tree_items(tree_id):
if type_ == 'link':
url = self._get_submodule_url('/'.join((str_path, name)))
dirnodes.append(SubModuleNode(
name, url=url, commit=id_, alias=self.repository.alias))
continue
if str_path != '':
obj_path = '/'.join((str_path, name))
else:
obj_path = name
if obj_path not in self._stat_modes:
self._stat_modes[obj_path] = stat_
if type_ == 'tree':
dirnodes.append(DirNode(safe_bytes(obj_path), commit=self))
elif type_ == 'blob':
filenodes.append(FileNode(safe_bytes(obj_path), commit=self, mode=stat_, pre_load=pre_load))
else:
raise CommitError(f"Requested object should be Tree or Blob, is {type_}")
nodes = dirnodes + filenodes
for node in nodes:
if node.path not in self.nodes:
self.nodes[node.path] = node
nodes.sort()
return nodes
def get_node(self, path, pre_load=None):
path = self._fix_path(path)
if path not in self.nodes:
try:
tree_id, type_ = self._get_tree_id_for_path(path)
except CommitError:
raise NodeDoesNotExistError(
f"Cannot find one of parents' directories for a given "
f"path: {path}")
if type_ in ['link', 'commit']:
url = self._get_submodule_url(path)
node = SubModuleNode(path, url=url, commit=tree_id,
alias=self.repository.alias)
elif type_ == 'tree':
if path == '':
node = RootNode(commit=self)
else:
node = DirNode(safe_bytes(path), commit=self)
elif type_ == 'blob':
node = FileNode(safe_bytes(path), commit=self, pre_load=pre_load)
self._stat_modes[path] = node.mode
else:
raise self.no_node_at_path(path)
# cache node
self.nodes[path] = node
return self.nodes[path]
def get_largefile_node(self, path):
tree_id, _ = self._get_tree_id_for_path(path)
pointer_spec = self._remote.is_large_file(tree_id)
if pointer_spec:
# content of that file regular FileNode is the hash of largefile
file_id = pointer_spec.get('oid_hash')
if self._remote.in_largefiles_store(file_id):
lf_path = self._remote.store_path(file_id)
return LargeFileNode(safe_bytes(lf_path), commit=self, org_path=path)
@LazyProperty
def affected_files(self):
"""
Gets a fast accessible file changes for given commit
"""
added, modified, deleted = self._changes_cache
return list(added.union(modified).union(deleted))
@LazyProperty
def _changes_cache(self):
added = set()
modified = set()
deleted = set()
parents = self.parents
if not self.parents:
parents = [base.EmptyCommit()]
for parent in parents:
if isinstance(parent, base.EmptyCommit):
oid = None
else:
oid = parent.raw_id
_added, _modified, _deleted = self._remote.tree_changes(oid, self.raw_id)
added = added | set(_added)
modified = modified | set(_modified)
deleted = deleted | set(_deleted)
return added, modified, deleted
def _get_paths_for_status(self, status):
"""
Returns sorted list of paths for given ``status``.
:param status: one of: *added*, *modified* or *deleted*
"""
added, modified, deleted = self._changes_cache
return sorted({
'added': list(added),
'modified': list(modified),
'deleted': list(deleted)}[status]
)
@LazyProperty
def added(self):
"""
Returns list of added ``FileNode`` objects.
"""
if not self.parents:
return list(self._get_file_nodes())
return AddedFileNodesGenerator(self.added_paths, self)
@LazyProperty
def added_paths(self):
return [n for n in self._get_paths_for_status('added')]
@LazyProperty
def changed(self):
"""
Returns list of modified ``FileNode`` objects.
"""
if not self.parents:
return []
return ChangedFileNodesGenerator(self.changed_paths, self)
@LazyProperty
def changed_paths(self):
return [n for n in self._get_paths_for_status('modified')]
@LazyProperty
def removed(self):
"""
Returns list of removed ``FileNode`` objects.
"""
if not self.parents:
return []
return RemovedFileNodesGenerator(self.removed_paths, self)
@LazyProperty
def removed_paths(self):
return [n for n in self._get_paths_for_status('deleted')]
def _get_submodule_url(self, submodule_path):
git_modules_path = '.gitmodules'
if self._submodules is None:
self._submodules = {}
try:
submodules_node = self.get_node(git_modules_path)
except NodeDoesNotExistError:
return None
parser = configparser.RawConfigParser()
parser.read_file(io.StringIO(submodules_node.str_content))
for section in parser.sections():
path = parser.get(section, 'path')
url = parser.get(section, 'url')
if path and url:
self._submodules[path.strip('/')] = url
return self._submodules.get(submodule_path.strip('/'))