# Copyright Swiss Data Science Center (SDSC). A partnership between
# École Polytechnique Fédérale de Lausanne (EPFL) and
# Eidgenössische Technische Hochschule Zürich (ETHZ).
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Git utility functions."""
import contextlib
import os
import posixpath
import re
import shutil
import sys
import time
import urllib
from functools import reduce
from pathlib import Path
from subprocess import PIPE, SubprocessError, run
from typing import TYPE_CHECKING, Dict, List, Optional, Set, Tuple, Union, cast
from uuid import uuid4
import git
from renku.core import errors
from renku.infrastructure.repository import DiffChangeType
if TYPE_CHECKING:
from renku.domain_model.entity import Collection, Entity
from renku.domain_model.git import GitURL
from renku.domain_model.provenance.agent import Person, SoftwareAgent
from renku.infrastructure.repository import Commit, Remote, Repository
COMMIT_DIFF_STRATEGY = "DIFF"
STARTED_AT = int(time.time() * 1e3)
BRANCH_NAME_LIMIT = 250
CLI_GITLAB_ENDPOINT = "repos"
PROTECTED_BRANCH_PREFIX = "renku/autobranch"
RENKU_BACKUP_PREFIX = "renku-backup"
# TODO: Make sure caching is thread-safe
_entity_cache: Dict[Tuple[Optional[str], str], Union["Entity", "Collection"]] = {}
[docs]def run_command(command, *paths, separator=None, **kwargs):
"""Execute command by splitting `paths` to make sure that argument list will be within os limits.
Args:
command: A list or tuple containing command and its arguments.
*paths: Paths to run on.
separator: Separator for `paths` if they need to be passed as string. (Default value = None)
Raises:
errors.GitError: If a Git subcommand failed.
Returns:
Result of last invocation.
"""
from renku.infrastructure.repository import split_paths
result = None
for batch in split_paths(*paths):
if separator:
batch = [separator.join(batch)]
try:
if not isinstance(batch, list):
batch = list(batch)
result = run(command + batch, **kwargs)
if result.returncode != 0:
break
except KeyboardInterrupt:
raise
except SubprocessError as e:
raise errors.GitError(f"Cannot run command {command} : {e}")
return result
[docs]def is_valid_git_repository(repository: Optional["Repository"]) -> bool:
"""Return if is a git repository and has a valid HEAD.
Args:
repository(Optional[Repository]): The repository to check.
Returns:
bool: Whether this is a valid Git repository.
"""
return repository is not None and repository.head.is_valid()
[docs]def get_hook_path(path: Path, name: str) -> Path:
"""Return path to the given named hook in the given repository.
Args:
path(Path): The current Git repository's path.
name(str): The name of the hook.
Returns:
Path: Path to the hook.
"""
return path / ".git" / "hooks" / name
[docs]def get_oauth_url(url, gitlab_token):
"""Format URL with a username and password.
Args:
url: The URL to format.
gitlab_token: The Gitlab OAuth2 Token.
Returns:
The URL with credentials added.
"""
parsed_url = urllib.parse.urlparse(url)
if not parsed_url.netloc:
raise ValueError(f"Invalid http git url: {url}")
netloc = f"oauth2:{gitlab_token}@{parsed_url.netloc}"
return parsed_url._replace(netloc=netloc).geturl()
[docs]def get_cache_directory_for_repository(url) -> Path:
"""Return a path to project's cache directory.
Args:
url: The repository URL.
Returns:
Path: The path of the cache.
"""
from renku.core.constant import CACHE
from renku.domain_model.project_context import project_context
return project_context.metadata_path / CACHE / get_full_repository_path(url)
[docs]def parse_git_url(url: Optional[str]) -> "GitURL":
"""Return parsed git url.
Args:
url(Optional[str]): The URL to parse.
Raises:
errors.InvalidGitURL: If ``url`` is empty.
Returns:
GitURL: The parsed GitURL.
"""
from renku.domain_model.git import GitURL
if not url:
raise errors.InvalidGitURL("No URL provided.")
return GitURL.parse(url)
[docs]def have_same_remote(url1, url2) -> bool:
"""Checks if two git urls point to the same remote repo ignoring protocol and credentials.
Args:
url1: The first URL.
url2:The second URL.
Returns:
bool: True if both URLs point to the same repository.
"""
try:
u1 = parse_git_url(url1)
u2 = parse_git_url(url2)
return u1.hostname == u2.hostname and u1.path == u2.path
except (errors.GitError, AttributeError):
return False
[docs]def get_renku_repo_url(remote_url, deployment_hostname=None, access_token=None):
"""Return a repo url that can be authenticated by renku.
Args:
remote_url: The repository URL.
deployment_hostname: The host name used by this deployment (Default value = None).
access_token: The OAuth2 access token (Default value = None).
Returns:
The Renku repository URL with credentials.
"""
parsed_remote = parse_git_url(remote_url)
path = parsed_remote.path.strip("/")
if path.startswith("gitlab/"):
path = path.replace("gitlab/", "")
if not path.startswith(f"{CLI_GITLAB_ENDPOINT}/"):
path = posixpath.join(CLI_GITLAB_ENDPOINT, path)
credentials = f"renku:{access_token}@" if access_token else ""
hostname = deployment_hostname or parsed_remote.hostname
if hostname.startswith("gitlab."):
hostname = hostname.replace("gitlab.", "", 1)
return urllib.parse.urljoin(f"https://{credentials}{hostname}", path)
[docs]def create_backup_remote(repository: "Repository", remote_name: str, url: str) -> Tuple[str, bool, Optional["Remote"]]:
"""Create a backup for ``remote_name`` and sets its url to ``url``.
Args:
repository(Repository): The current repository.
remote_name(str): The name of the backup remote.
url(str): The remote URL.
Returns:
Tuple[str, bool, Optional[Remote]]: Tuple of backup remote name, whether it existed already and the created
remote if successful.
"""
backup_remote_name = f"{RENKU_BACKUP_PREFIX}-{remote_name}"
backup_exists = any(backup_remote_name == r.name for r in repository.remotes)
if backup_exists:
return backup_remote_name, True, None
try:
remote = repository.remotes.add(name=backup_remote_name, url=url)
except errors.GitCommandError:
return backup_remote_name, False, None
else:
return backup_remote_name, False, remote
[docs]def set_git_credential_helper(repository: "Repository", hostname):
"""Set up credential helper for renku git."""
with repository.get_configuration(writable=True) as config:
config.set_value("credential", "helper", f"!renku credentials --hostname {hostname}")
[docs]def get_full_repository_path(url: Optional[str]) -> str:
"""Extract hostname/path of a git repository from its URL.
Args:
url(Optional[str]): The URL.
Returns:
The hostname plus path extracted from the URL.
"""
if url is None:
return ""
parsed_url = parse_git_url(url)
return posixpath.join(parsed_url.hostname, parsed_url.path) # type:ignore
[docs]def get_repository_name(url: str) -> str:
"""Extract name of a git repository from its URL.
Args:
url(str): The URL to get the repository name from.
Returns:
str: The repository name.
"""
return Path(get_renku_repo_url(url)).stem
[docs]def get_committer_agent(commit: "Commit") -> "SoftwareAgent":
"""Return committer SoftwareAgent.
Args:
commit(Commit): The commit to check.
Returns:
SoftwareAgent: The agent responsible for the commit.
"""
from renku.domain_model.provenance.agent import SoftwareAgent
return SoftwareAgent(id=commit.committer.email, name=commit.committer.name)
[docs]def get_git_user(repository: Optional["Repository"]) -> Optional["Person"]:
"""Return git user.
Args:
repository(Optional[Repository]): The Git repository.
Returns:
Optional[Person]: The person associated with the repository.
"""
from renku.domain_model.provenance.agent import Person
if repository is None:
return None
user = repository.get_user()
return Person(name=user.name, email=user.email)
[docs]def get_remote(
repository: Optional["Repository"], *, name: Optional[str] = None, url: Optional[str] = None
) -> Optional["Remote"]:
"""Return repository's remote using its name or url or return default remote if any.
Args:
repository(Optional[Repository]): The Git repository.
name(str, optional): The name of the remote (Default value = None).
url(str, optional): The remote URL (Default value = None).
Returns:
Optional[Remote]: The remote, if found.
"""
if not repository or len(repository.remotes) == 0:
return None
elif name:
return next((r for r in repository.remotes if r.name == name), None)
elif url:
return next((r for r in repository.remotes if r.url == url), None)
elif len(repository.remotes) == 1:
return repository.remotes[0]
elif repository.active_branch and repository.active_branch.remote_branch:
return repository.active_branch.remote_branch.remote
return None
[docs]def is_path_safe(path: Union[Path, str]) -> bool:
"""Check if the path should be used in output.
Args:
path(Union[Path, str]): The path to check.
Returns:
bool: True if the path is safe else False.
"""
path = str(path)
# Should not be in ignore paths.
if path in {".gitignore", ".gitattributes"}:
return False
# Ignore everything in .renku ...
if path.startswith(".renku"):
return False
return True
[docs]def get_entity_from_revision(
repository: "Repository",
path: Union[Path, str],
revision: Optional[str] = None,
bypass_cache: bool = False,
checksum: Optional[str] = None,
) -> "Entity":
"""Return an Entity instance from given path and revision.
Args:
repository(Repository): The current repository.
path(Union[Path, str]): The path of the entity.
revision(str, optional): The revision to check at (Default value = None).
bypass_cache(bool): Whether to ignore cached entries and get information from disk (Default value = False).
checksum(str, optional): Pre-calculated checksum for performance reasons, will be calculated if not set.
Returns:
Entity: The Entity for the given path and revision.
"""
from renku.domain_model.constant import NON_EXISTING_ENTITY_CHECKSUM
from renku.domain_model.entity import Collection, Entity
def get_directory_members(absolute_path: Path) -> List[Entity]:
"""Return first-level files/directories in a directory."""
members: List[Entity] = []
for member in absolute_path.iterdir():
if member.name == ".gitkeep":
continue
member_path = member.relative_to(repository.path)
assert all(member_path != m.path for m in members)
entity = get_entity_from_revision(repository, member_path, revision, bypass_cache=bypass_cache)
# NOTE: If a path is not found at a revision we assume that it didn't exist at that revision
if entity:
members.append(entity)
return members
global _entity_cache
key = (revision, str(path))
cached_entry = _entity_cache.get(key)
if cached_entry and not bypass_cache:
return cached_entry
# NOTE: For untracked directory the hash is None; make sure to stage them first before calling this function.
if not checksum:
checksum = repository.get_object_hash(revision=revision, path=path)
# NOTE: If object was not found at a revision it's either removed or exists in a different revision; keep the
# entity and use revision as checksum
if isinstance(revision, str) and revision == "HEAD":
revision = repository.head.commit.hexsha
checksum = checksum or revision or NON_EXISTING_ENTITY_CHECKSUM
id = Entity.generate_id(checksum=checksum, path=path)
absolute_path = repository.path / path
if str(path) != "." and absolute_path.is_dir():
members = get_directory_members(absolute_path)
entity: Union[Entity, Collection] = Collection(id=id, checksum=checksum, path=path, members=members)
else:
entity = Entity(id=id, checksum=checksum, path=path)
_entity_cache[key] = entity
return entity
[docs]def get_git_path(path: Union[Path, str] = ".") -> Path:
"""Return the repository path."""
# TODO: Implement this using ``git rev-parse --git-dir``
try:
path = get_git_repository(path=path).path
except ValueError:
path = Path(path)
return path.resolve()
[docs]def get_git_repository(path: Union[Path, str] = ".") -> "Repository":
"""Get Git repository from the current path or any of its parents.
Args:
path: Path to start from (Default value = ".").
Raises:
ValueError: If not inside a git repository.
Returns:
Git repository
"""
from renku.infrastructure.repository import Repository
try:
return Repository(path, search_parent_directories=True)
except errors.GitError:
raise ValueError(f"Cannot find a git repository at '{path}'")
[docs]def commit_changes(*paths: Union[Path, str], repository: "Repository", message=None) -> List[str]:
"""Commit paths to the repository.
Args:
*paths(Union[Path, str]): The paths to commit.
repository(Repository): The repository to commit to.
message: The commit message (Default value = None).
Raises:
errors.GitError: If paths couldn't be committed.
Returns:
List of paths that were committed.
"""
if len(paths) == 0:
return []
try:
staged_files = {c.a_path for c in repository.staged_changes} if repository.head.is_valid() else set()
path_to_save = set(paths) - staged_files
repository.add(*path_to_save)
saved_paths = [c.b_path for c in repository.staged_changes]
if saved_paths:
if not message:
# Show saved files in message
max_line_len = 100
max_total_len = 100000
message = "Saved changes to: "
paths_with_lens = cast(
List[Tuple[str, int]],
reduce(
lambda c, x: c + [(x, c[-1][1] + len(x))],
saved_paths,
cast(List[Tuple[Optional[str], int]], [(None, len(message))]),
)[1:],
)
# limit first line to max_len characters
message += " ".join(p if l < max_line_len else "\n\t" + p for p, l in paths_with_lens)
if len(message) > max_total_len:
message = message[: max_total_len - 3] + "..."
repository.commit(message)
except errors.GitCommandError as e:
raise errors.GitError("Cannot commit changes") from e
else:
return saved_paths
[docs]def push_changes(repository: "Repository", remote: Optional[str] = None, reset: bool = True) -> str:
"""Push to a remote branch. If the remote branch is protected a new remote branch will be created and pushed to.
Args:
repository(Repository): The current repository.
remote(str, optional): The remote to push to (Default value = None).
reset(bool, optional): Whether to reset active branch to its upstream branch, used if changes get
pushed to a temporary branch (Default value = True).
Raises:
errors.GitError: If there's no remote or the push fails.
Returns:
str: Name of the branch that was pushed to.
"""
from renku.core.util import communication
if repository.active_branch is None:
raise errors.GitError("Cannot push changes when repository is in detached HEAD state.")
if repository.active_branch.remote_branch:
ref = repository.active_branch.remote_branch.name
pushed_branch = ref.split("/")[-1]
else:
pushed_branch = repository.active_branch.name
if remote is not None:
pushed_remote = get_remote(repository, url=remote) or get_remote(repository, name=remote)
if not pushed_remote:
if get_remote(repository, name="origin") is not None:
pushed_branch = uuid4().hex
pushed_remote_name = uuid4().hex
else:
pushed_remote_name = "origin"
pushed_remote = repository.remotes.add(name=pushed_remote_name, url=remote)
else:
pushed_remote = get_remote(repository)
if not pushed_remote:
raise errors.GitRemoteNotFoundError("No remote has been set up for the current branch")
try:
# NOTE: Push local changes to remote branch.
merge_conflict = False
if len(pushed_remote.references) > 0 and repository.active_branch.remote_branch in pushed_remote.references:
repository.fetch(pushed_remote)
try:
repository.pull(pushed_remote, repository.active_branch)
except errors.GitCommandError as e:
# NOTE: Couldn't pull, probably due to conflicts, try a merge.
# NOTE: the error sadly doesn't tell any details.
unmerged_blobs = repository.unmerged_blobs.values()
conflicts = (stage != 0 for blobs in unmerged_blobs for stage, _ in blobs)
if any(conflicts):
merge_conflict = True
if communication.confirm(
"There were conflicts when updating the local data with remote changes,"
" do you want to resolve them (if not, a new remote branch will be created)?",
warning=True,
):
repository.run_git_command("mergetool", "-g")
repository.commit("merging conflict", no_edit=True)
merge_conflict = False
else:
repository.reset(hard=True)
else:
raise errors.GitError("Cannot pull changes from remote") from e
push_failed = False
if not merge_conflict:
# NOTE: Try pushing to remote branch which might fail if the branch is protected
try:
repository.push(pushed_remote, f"{repository.active_branch.name}:{pushed_branch}")
except errors.GitCommandError:
push_failed = True
if merge_conflict or push_failed:
# NOTE: Push to a new remote branch and reset the cache.
last_short_sha = repository.head.commit.hexsha[0:8]
old_active_branch = str(repository.active_branch)
fixed_chars_len = len(PROTECTED_BRANCH_PREFIX) + len(last_short_sha) + 2
if len(old_active_branch) + fixed_chars_len > BRANCH_NAME_LIMIT:
old_branch_reference = old_active_branch[0 : (BRANCH_NAME_LIMIT - fixed_chars_len)]
else:
old_branch_reference = old_active_branch
pushed_branch = f"{PROTECTED_BRANCH_PREFIX}/{old_branch_reference}/{last_short_sha}"
try:
repository.branches.add(pushed_branch)
repository.checkout(pushed_branch)
repository.push(pushed_remote, pushed_branch, set_upstream=True)
except Exception:
reset = False # NOTE: Don't reset the repository if push to the new remote branch failed
raise
finally:
repository.checkout(old_active_branch)
if reset:
repository.reset(reference=repository.active_branch.remote_branch, hard=True)
except errors.GitCommandError as e:
raise errors.GitError("Cannot push changes") from e
return pushed_branch
[docs]def clone_renku_repository(
url: str,
path: Optional[Union[Path, str]],
gitlab_token=None,
deployment_hostname=None,
depth: Optional[int] = None,
install_githooks=False,
install_lfs=True,
skip_smudge=True,
recursive=False,
progress=None,
config: Optional[dict] = None,
raise_git_except=False,
checkout_revision=None,
use_renku_credentials: bool = False,
reuse_existing_repository: bool = False,
) -> "Repository":
"""Clone a Renku Repository.
Args:
url(str): The Git URL to clone.
path(Union[Path, str]): The path to clone into.
gitlab_token: The gitlab OAuth2 token (Default value = None).
deployment_hostname: The hostname of the current renku deployment (Default value = None).
depth(Optional[int], optional): The clone depth, number of commits from HEAD (Default value = None).
install_githooks: Whether to install git hooks (Default value = False).
install_lfs: Whether to install Git LFS (Default value = True).
skip_smudge: Whether to pull files from Git LFS (Default value = True).
recursive: Whether to clone recursively (Default value = False).
progress: The GitProgress object (Default value = None).
config(Optional[dict], optional): Set configuration for the project (Default value = None).
raise_git_except: Whether to raise git exceptions (Default value = False).
checkout_revision: The revision to check out after clone (Default value = None).
use_renku_credentials(bool, optional): Whether to use Renku provided credentials (Default value = False).
reuse_existing_repository(bool, optional): Whether to clone over an existing repository (Default value = False).
Returns:
The cloned repository.
"""
from renku.core.login import has_credentials_for_hostname
parsed_url = parse_git_url(url)
clone_options = None
create_backup = False
if parsed_url.hostname == "localhost":
absolute_path = Path(parsed_url.path).resolve()
git_url = str(absolute_path)
elif parsed_url.scheme in ["http", "https"] and gitlab_token:
git_url = get_oauth_url(url, gitlab_token)
elif (
parsed_url.scheme in ["http", "https"]
and use_renku_credentials
and has_credentials_for_hostname(parsed_url.hostname) # NOTE: Don't change remote URL if no credentials exist
):
clone_options = [f"--config credential.helper='!renku credentials --hostname {parsed_url.hostname}'"]
deployment_hostname = deployment_hostname or parsed_url.hostname
git_url = get_renku_repo_url(url, deployment_hostname=deployment_hostname, access_token=None)
create_backup = True
else:
git_url = url
repository = clone_repository(
git_url,
path=path,
install_githooks=install_githooks,
depth=depth,
clean=reuse_existing_repository,
install_lfs=install_lfs,
skip_smudge=skip_smudge,
recursive=recursive,
progress=progress,
config=config,
raise_git_except=raise_git_except,
checkout_revision=checkout_revision,
clone_options=clone_options,
)
if create_backup:
create_backup_remote(repository=repository, remote_name="origin", url=url)
set_git_credential_helper(
repository=cast("Repository", repository), hostname=deployment_hostname or parsed_url.hostname
)
return repository
[docs]def clone_repository(
url,
path: Optional[Union[Path, str]] = None,
install_githooks=True,
install_lfs=True,
skip_smudge=True,
recursive=False,
depth=None,
progress: Optional[git.RemoteProgress] = None,
config: Optional[dict] = None,
raise_git_except=False,
checkout_revision=None,
no_checkout: bool = False,
clean: bool = False,
clone_options: Optional[List[str]] = None,
) -> "Repository":
"""Clone a Git repository and install Git hooks and LFS.
Args:
url: The Git URL to clone.
path(Union[Path, str], optional): The path to clone into (Default value = None).
install_githooks: Whether to install git hooks (Default value = True).
install_lfs: Whether to install Git LFS (Default value = True).
skip_smudge: Whether to pull files from Git LFS (Default value = True).
recursive: Whether to clone recursively (Default value = False).
depth: The clone depth, number of commits from HEAD (Default value = None).
progress: The GitProgress object (Default value = None).
config(Optional[dict], optional): Set configuration for the project (Default value = None).
raise_git_except: Whether to raise git exceptions (Default value = False).
checkout_revision: The revision to check out after clone (Default value = None).
no_checkout(bool, optional): Whether to perform a checkout (Default value = False).
clean(bool, optional): Whether to require the target folder to be clean (Default value = False).
clone_options(List[str], optional): Additional clone options (Default value = None).
Returns:
The cloned repository.
"""
from renku.core.githooks import install_githooks as install_githooks_function
from renku.infrastructure.repository import Repository
path = Path(path) if path else Path(get_repository_name(url))
def error_from_progress(progress: Optional[git.RemoteProgress], url: str) -> errors.GitError:
"""Format a Git command error into a more user-friendly format."""
message = f"Cannot clone repo from {url}"
if progress:
lines = progress.other_lines + progress.error_lines
error = "".join([f"\n\t{line}" for line in lines if line.strip()])
message += f" - error message:\n {error}"
return errors.GitError(message)
def clean_directory(clean: bool):
if not clean or not path:
return
try:
shutil.rmtree(path)
except FileNotFoundError:
pass
except PermissionError as e:
raise errors.InvalidFileOperation(f"Cannot delete files in {path}: Permission denied") from e
def check_and_reuse_existing_repository() -> Optional["Repository"]:
if path is None or not cast(Path, path).exists():
return None
try:
repository = Repository(path)
remote = get_remote(repository, name="origin") or get_remote(repository)
if remote and have_same_remote(remote.url, url):
repository.reset(hard=True)
repository.fetch(all=True, tags=True)
# NOTE: By default we check out remote repository's HEAD since the local HEAD might not point to
# the default branch.
default_checkout_revision = checkout_revision or "origin/HEAD"
repository.checkout(default_checkout_revision)
try:
repository.pull()
except errors.GitCommandError: # NOTE: When ref is not a branch, an error is thrown
pass
else:
# NOTE: not same remote, so don't reuse
clean_directory(clean=clean)
return None
except errors.GitError: # NOTE: Not a git repository, remote not found, or checkout failed
clean_directory(clean=clean)
else:
return repository
return None
def clone(branch, depth):
os.environ["GIT_LFS_SKIP_SMUDGE"] = "1" if skip_smudge else "0"
return Repository.clone_from(
url,
cast(Path, path),
branch=branch,
recursive=recursive,
depth=depth,
no_checkout=no_checkout,
progress=progress,
clone_options=clone_options,
)
assert config is None or isinstance(config, dict), f"Config should be a dict not '{type(config)}'"
existing_repository = check_and_reuse_existing_repository()
if existing_repository is not None:
return existing_repository
try:
# NOTE: Try to clone, assuming checkout_revision is a branch or a tag (if it is set)
repository = clone(branch=checkout_revision, depth=depth)
except errors.GitCommandError:
if not checkout_revision:
if raise_git_except:
raise
raise error_from_progress(progress, url)
# NOTE: Delete the partially-cloned repository
clean_directory(clean=True)
# NOTE: clone without branch set, in case checkout_revision was not a branch or a tag but a commit
try:
repository = clone(branch=None, depth=None)
except errors.GitCommandError:
if raise_git_except:
raise
raise error_from_progress(progress, url)
if checkout_revision is not None and not no_checkout:
try:
repository.checkout(checkout_revision)
except errors.GitCommandError:
raise errors.GitReferenceNotFoundError(
f"Cannot checkout reference '{checkout_revision}' in repository: {url}"
)
if config:
with repository.get_configuration(writable=True) as config_writer:
for key, value in config.items():
try:
section, option = key.rsplit(".", maxsplit=1)
except ValueError:
raise errors.GitError(f"Cannot write to config: Invalid config '{key}'")
config_writer.set_value(section, option, value)
if install_githooks:
install_githooks_function(force=True, path=repository.path)
if install_lfs:
repository.lfs.install(skip_smudge=skip_smudge)
return repository
[docs]def get_git_progress_instance():
"""Return a GitProgress object."""
from git.remote import RemoteProgress
class GitProgress(RemoteProgress):
"""Progress printing for GitPython."""
def __init__(self):
"""Initialize a Git progress printer."""
super().__init__()
self._previous_line_length = 0
def update(self, op_code, cur_count, max_count=None, message=""):
"""Callback for printing Git operation status."""
self._clear_line()
print(self._cur_line, end="\r")
self._previous_line_length = len(self._cur_line) if self._cur_line else 0
if (op_code & RemoteProgress.END) != 0:
print()
def _clear_line(self):
print(self._previous_line_length * " ", end="\r")
return GitProgress()
[docs]def get_file_size(repository_path: Path, path: str) -> Optional[int]:
"""Return file size for a file inside a git repository."""
# NOTE: First try to get file size from Git LFS
try:
lfs_run = run(
("git", "lfs", "ls-files", "--name-only", "--size"),
stdout=PIPE,
cwd=repository_path,
text=True,
)
except SubprocessError:
pass
else:
lfs_output = lfs_run.stdout.split("\n")
# Example line format: relative/path/to/file (7.9 MB)
pattern = re.compile(r".*\((.*)\)")
for line in lfs_output:
if path not in line:
continue
match = pattern.search(line)
if not match:
continue
size_info = match.groups()[0].split()
if len(size_info) != 2:
continue
try:
size = float(size_info[0])
except ValueError:
continue
unit = size_info[1].strip().lower()
conversions = {"b": 1, "kb": 1e3, "mb": 1e6, "gb": 1e9}
multiplier = conversions.get(unit, None)
if multiplier is None:
continue
return int(size * multiplier)
# Return size of the file on disk
full_path = repository_path / path
return os.path.getsize(full_path) if full_path.exists() else None
[docs]def shorten_message(message: str, line_length: int = 100, body_length: int = 65000) -> str:
"""Wraps and shortens a commit message.
Args:
message(str): message to adjust.
line_length(int, optional): maximum line length before wrapping. 0 for infinite (Default value = 100).
body_length(int, optional): maximum body length before cut. 0 for infinite (Default value = 65000).
Raises:
ParameterError: If line_length or body_length < 0
Returns:
message wrapped and trimmed.
"""
if line_length < 0:
raise errors.ParameterError("the length can't be negative.", "line_length")
if body_length < 0:
raise errors.ParameterError("the length can't be negative.", "body_length")
if body_length and len(message) > body_length:
message = message[: body_length - 3] + "..."
if line_length == 0 or len(message) <= line_length:
return message
lines = message.split(" ")
lines = [
line
if len(line) < line_length
else "\n\t".join(line[o : o + line_length] for o in range(0, len(line), line_length))
for line in lines
]
# NOTE: tries to preserve message spacing.
wrapped_message = reduce(
lambda c, x: (f"{c[0]} {x}", c[1] + len(x) + 1)
if c[1] + len(x) <= line_length
else (f"{c[0]}\n\t" + x, len(x)),
lines,
("", 0),
)[0]
return wrapped_message[1:]
[docs]def get_in_submodules(
repository: "Repository", commit: "Commit", path: Union[Path, str]
) -> Tuple["Repository", "Commit", Path]:
"""Resolve filename in submodules."""
original_path = repository.path / path
in_vendor = str(path).startswith(".renku/vendors")
if original_path.is_symlink() or in_vendor:
resolved_path = original_path.resolve()
for submodule in repository.submodules: # type: ignore
if not (submodule.path / ".git").exists():
continue
try:
path_within_submodule = resolved_path.relative_to(submodule.path)
commit = submodule.get_previous_commit(path=path_within_submodule, revision=commit.hexsha)
except (ValueError, errors.GitCommitNotFoundError):
pass
else:
return submodule, commit, path_within_submodule
return repository, commit, Path(path)
[docs]def get_dirty_paths(repository: "Repository") -> Set[str]:
"""Get paths of dirty files in the repository."""
modified_files = [item.b_path for item in repository.unstaged_changes if item.b_path]
staged_files = [d.a_path for d in repository.staged_changes] if repository.head.is_valid() else []
return {os.path.join(repository.path, p) for p in repository.untracked_files + modified_files + staged_files}
[docs]@contextlib.contextmanager
def with_commit(
*,
repository: "Repository",
transaction_id: str,
commit_only=None,
commit_empty=True,
raise_if_empty=False,
commit_message=None,
abbreviate_message=True,
skip_dirty_checks=False,
):
"""Automatic commit."""
diff_before = prepare_commit(repository=repository, commit_only=commit_only, skip_dirty_checks=skip_dirty_checks)
yield
finalize_commit(
diff_before=diff_before,
repository=repository,
transaction_id=transaction_id,
commit_only=commit_only,
commit_empty=commit_empty,
raise_if_empty=raise_if_empty,
commit_message=commit_message,
abbreviate_message=abbreviate_message,
)
[docs]def prepare_commit(*, repository: "Repository", commit_only=None, skip_dirty_checks=False, skip_staging: bool = False):
"""Gather information about repo needed for committing later on."""
def ensure_not_untracked(path):
"""Ensure that path is not part of git untracked files."""
for file_path in repository.untracked_files:
is_parent = (repository.path / file_path).parent == (repository.path / path)
is_equal = str(path) == file_path
if is_parent or is_equal:
raise errors.DirtyRenkuDirectory(repository)
def ensure_not_staged(path):
"""Ensure that path is not part of git staged files."""
path = str(path)
for file_path in repository.staged_changes:
is_parent = str(file_path.a_path).startswith(path)
is_equal = path == file_path.a_path
if is_parent or is_equal:
raise errors.DirtyRenkuDirectory(repository)
if skip_staging:
if not isinstance(commit_only, list) or len(commit_only) == 0:
raise errors.OperationError("Cannot use ``skip_staging`` without specifying files to commit.")
diff_before = set()
if commit_only == COMMIT_DIFF_STRATEGY:
if len(repository.staged_changes) > 0 or len(repository.unstaged_changes) > 0:
repository.reset()
# Exclude files created by pipes.
diff_before = {
file for file in repository.untracked_files if STARTED_AT - int(Path(file).stat().st_ctime * 1e3) >= 1e3
}
if isinstance(commit_only, list) and not skip_dirty_checks:
for path in commit_only:
ensure_not_untracked(path)
ensure_not_staged(path)
return diff_before
[docs]def finalize_commit(
*,
diff_before,
repository: "Repository",
transaction_id: str,
commit_only=None,
commit_empty=True,
raise_if_empty=False,
commit_message=None,
abbreviate_message=True,
skip_staging: bool = False,
):
"""Commit modified/added paths."""
from renku.core.util.urls import remove_credentials
from renku.infrastructure.repository import Actor
from renku.version import __version__, version_url
committer = Actor(name=f"renku {__version__}", email=version_url)
change_types = {item.a_path: item.change_type for item in repository.unstaged_changes}
if commit_only == COMMIT_DIFF_STRATEGY:
# Get diff generated in command.
staged_after = set(change_types.keys())
modified_after_change_types = {item.a_path: item.change_type for item in repository.staged_changes}
modified_after = set(modified_after_change_types.keys())
change_types.update(modified_after_change_types)
diff_after = set(repository.untracked_files).union(staged_after).union(modified_after)
# Remove files not touched in command.
commit_only = list(diff_after - diff_before)
if isinstance(commit_only, list):
for path_ in commit_only:
p = repository.path / path_
if p.exists() or change_types.get(str(path_)) == DiffChangeType.DELETED:
repository.add(path_)
if not commit_only:
repository.add(all=True)
try:
diffs = [d.a_path for d in repository.staged_changes]
except errors.GitError:
diffs = []
if not commit_empty and not diffs:
if raise_if_empty:
raise errors.NothingToCommit()
return
if commit_message and not isinstance(commit_message, str):
raise errors.CommitMessageEmpty()
elif not commit_message:
argv = [os.path.basename(sys.argv[0])] + [remove_credentials(arg) for arg in sys.argv[1:]]
commit_message = " ".join(argv)
if abbreviate_message:
commit_message = shorten_message(commit_message)
# NOTE: Only commit specified paths when skipping staging area
paths = commit_only if skip_staging else []
# Ignore pre-commit hooks since we have already done everything.
repository.commit(commit_message + transaction_id, committer=committer, no_verify=True, paths=paths)