Files
dvc/dvc/command/version.py
T

127 lines
4.0 KiB
Python

import argparse
import itertools
import logging
import os
import platform
import uuid
import pathlib
try:
import psutil
except ImportError:
psutil = None
from dvc.utils import is_binary, relpath
from dvc.command.base import CmdBaseNoRepo, append_doc_link
from dvc.version import __version__
from dvc.exceptions import DvcException, NotDvcRepoError
from dvc.system import System
from dvc.utils.pkg import PKG
logger = logging.getLogger(__name__)
class CmdVersion(CmdBaseNoRepo):
def run(self):
from dvc.repo import Repo
info = [
"DVC version: {}".format(__version__),
"Python version: {}".format(platform.python_version()),
"Platform: {}".format(platform.platform()),
"Binary: {}".format(is_binary()),
"Package: {}".format(PKG),
]
try:
repo = Repo()
root_directory = repo.root_dir
# cache_dir might not exist yet (e.g. after `dvc init`), and we
# can't auto-create it, as it might cause issues if the user
# later decides to enable shared cache mode with
# `dvc config cache.shared group`.
if os.path.exists(repo.cache.local.cache_dir):
info.append(
"Cache: {}".format(self.get_linktype_support_info(repo))
)
if psutil:
fs_type = self.get_fs_type(repo.cache.local.cache_dir)
info.append(
"Filesystem type (cache directory): {}".format(fs_type)
)
else:
logger.warning(
"Unable to detect supported link types, as cache "
"directory '{}' doesn't exist. It is usually auto-created "
"by commands such as `dvc add/fetch/pull/run/import`, "
"but you could create it manually to enable this "
"check.".format(relpath(repo.cache.local.cache_dir))
)
except NotDvcRepoError:
root_directory = os.getcwd()
if psutil:
fs_root = self.get_fs_type(os.path.abspath(root_directory))
info.append("Filesystem type (workspace): {}".format(fs_root))
logger.info("\n".join(info))
return 0
@staticmethod
def get_fs_type(path):
partition = {
pathlib.Path(part.mountpoint): (part.fstype, part.device)
for part in psutil.disk_partitions(all=True)
}
path = pathlib.Path(path)
for parent in itertools.chain([path], path.parents):
if parent in partition:
return partition[parent]
return ("unknown", "none")
@staticmethod
def get_linktype_support_info(repo):
links = {
"reflink": (System.reflink, None),
"hardlink": (System.hardlink, System.is_hardlink),
"symlink": (System.symlink, System.is_symlink),
}
fname = "." + str(uuid.uuid4())
src = os.path.join(repo.cache.local.cache_dir, fname)
open(src, "w").close()
dst = os.path.join(repo.root_dir, fname)
cache = []
for name, (link, is_link) in links.items():
try:
link(src, dst)
status = "supported"
if is_link and not is_link(dst):
status = "broken"
os.unlink(dst)
except DvcException:
status = "not supported"
cache.append("{name} - {status}".format(name=name, status=status))
os.remove(src)
return ", ".join(cache)
def add_parser(subparsers, parent_parser):
VERSION_HELP = "Show DVC version and system/environment information."
version_parser = subparsers.add_parser(
"version",
parents=[parent_parser],
description=append_doc_link(VERSION_HELP, "version"),
help=VERSION_HELP,
formatter_class=argparse.RawDescriptionHelpFormatter,
)
version_parser.set_defaults(func=CmdVersion)