def reflink(self, from_info, to_info):
tmp_info = to_info.parent / tmp_fname(to_info.name)
System.reflink(from_info, tmp_info)
# NOTE: reflink has its own separate inode, so you can set permissions
# that are different from the source.
os.chmod(fspath_py35(tmp_info), self._file_mode)
os.rename(fspath_py35(tmp_info), fspath_py35(to_info))
def copyfile(src, dest, no_progress_bar=False, name=None):
"""Copy file with progress bar"""
from dvc.exceptions import DvcException
from dvc.progress import Tqdm
from dvc.system import System
src = fspath_py35(src)
dest = fspath_py35(dest)
name = name if name else os.path.basename(dest)
total = os.stat(src).st_size
if os.path.isdir(dest):
dest = os.path.join(dest, os.path.basename(src))
try:
System.reflink(src, dest)
except DvcException:
with Tqdm(desc=name, disable=no_progress_bar, total=total,
bytes=True) as pbar:
with open(src, "rb") as fsrc, open(dest, "wb+") as fdest:
while True:
buf = fsrc.read(LOCAL_CHUNK_SIZE)
if not buf:
break
fdest.write(buf)
pbar.update(len(buf))
def erepo_dir(tmp_path_factory, monkeypatch):
from dvc.repo import Repo
from dvc.remote.config import RemoteConfig
path = TmpDir(fspath_py35(tmp_path_factory.mktemp("erepo")))
# Chdir for git and dvc to work locally
with monkeypatch.context() as m:
m.chdir(fspath_py35(path))
_git_init()
path.dvc = Repo.init()
path.scm = path.dvc.scm
path.dvc_gen(REPO_TEMPLATE, commit="init repo")
rconfig = RemoteConfig(path.dvc.config)
rconfig.add("upstream", path.dvc.cache.local.cache_dir, default=True)
path.scm_add([path.dvc.config.config_file], commit="add remote")
path.dvc_gen("version", "master")
path.scm_add([".gitignore", "version.dvc"], commit="master")
path.scm.checkout("branch", create_new=True)
(path / "version").unlink() # For mac ???
path.dvc_gen("version", "branch")
path.scm_add([".gitignore", "version.dvc"], commit="branch")
path.scm.checkout("master")
path.dvc.close()
return path
def test_update_rev(tmp_dir, dvc, scm, git_dir):
with git_dir.chdir():
git_dir.scm_gen({"foo": "foo"}, commit="first")
dvc.imp(fspath(git_dir), "foo")
assert (tmp_dir / "foo.dvc").exists()
with git_dir.chdir(), git_dir.branch("branch1", new=True):
git_dir.scm_gen({"foo": "foobar"}, commit="branch1 commit")
branch1_head = git_dir.scm.get_rev()
with git_dir.chdir(), git_dir.branch("branch2", new=True):
git_dir.scm_gen({"foo": "foobar foo"}, commit="branch2 commit")
branch2_head = git_dir.scm.get_rev()
stage = dvc.update("foo.dvc", rev="branch1")
assert stage.deps[0].def_repo == {
"url": fspath(git_dir),
"rev": "branch1",
"rev_lock": branch1_head,
}
with open(fspath_py35(tmp_dir / "foo")) as f:
assert "foobar" == f.read()
stage = dvc.update("foo.dvc", rev="branch2")
assert stage.deps[0].def_repo == {
"url": fspath(git_dir),
"rev": "branch2",
"rev_lock": branch2_head,
}
with open(fspath_py35(tmp_dir / "foo")) as f:
assert "foobar foo" == f.read()
def copy(self, from_info, to_info):
tmp_info = to_info.parent / tmp_fname(to_info.name)
try:
System.copy(from_info, tmp_info)
os.rename(fspath_py35(tmp_info), fspath_py35(to_info))
except Exception:
self.remove(tmp_info)
raise
def _read_params(repo, configs, rev):
res = {}
for config in configs:
if not repo.tree.exists(fspath_py35(config)):
continue
with repo.tree.open(fspath_py35(config), "r") as fobj:
try:
res[str(config)] = yaml.safe_load(fobj)
except yaml.YAMLError:
logger.debug(
"failed to read '%s' on '%s'", config, rev, exc_info=True
)
continue
return res
def is_protected(self, path_info):
if not self.exists(path_info):
return False
mode = os.stat(fspath_py35(path_info)).st_mode
return stat.S_IMODE(mode) == self.CACHE_MODE
def get(self, path_info):
"""Gets the checksum for the specified path info. Checksum will be
retrieved from the state database if available.
Args:
path_info (dict): path info to get the checksum for.
Returns:
str or None: checksum for the specified path info or None if it
doesn't exist in the state database.
"""
assert path_info.scheme == "local"
path = fspath_py35(path_info)
if not os.path.exists(path):
return None
actual_mtime, actual_size = get_mtime_and_size(path, self.repo.tree)
actual_inode = get_inode(path)
existing_record = self.get_state_record_for_inode(actual_inode)
if not existing_record:
return None
mtime, size, checksum, _ = existing_record
if self._file_metadata_changed(actual_mtime, mtime, actual_size, size):
return None
self._update_state_record_timestamp_for_inode(actual_inode)
return checksum
def chdir(self):
old = os.getcwd()
try:
os.chdir(fspath_py35(self))
yield
finally:
os.chdir(old)
def save(self, path_info, checksum):
"""Save checksum for the specified path info.
Args:
path_info (dict): path_info to save checksum for.
checksum (str): checksum to save.
"""
assert path_info.scheme == "local"
assert checksum is not None
assert os.path.exists(fspath_py35(path_info))
actual_mtime, actual_size = get_mtime_and_size(
path_info, self.repo.tree
)
actual_inode = get_inode(path_info)
existing_record = self.get_state_record_for_inode(actual_inode)
if not existing_record:
self._insert_new_state_record(
actual_inode, actual_mtime, actual_size, checksum
)
return
self._update_state_for_path_changed(
actual_inode, actual_mtime, actual_size, checksum
)
def test_ignore_external(tmp_dir, scm, dvc, tmp_path_factory):
tmp_dir.gen(".dvcignore", "*.backup\ntmp")
ext_dir = TmpDir(fspath_py35(tmp_path_factory.mktemp("external_dir")))
ext_dir.gen({"y.backup": "y", "tmp": "ext tmp"})
remote = RemoteLOCAL(dvc, {})
result = {relpath(f, ext_dir) for f in remote.walk_files(ext_dir)}
assert result == {"y.backup", "tmp"}
def _upload(
self, from_file, to_info, name=None, no_progress_bar=False, **_kwargs
):
makedirs(to_info.parent, exist_ok=True)
tmp_file = tmp_fname(to_info)
copyfile(
from_file, tmp_file, name=name, no_progress_bar=no_progress_bar
)
os.rename(tmp_file, fspath_py35(to_info))
def test_pipeline_file_target_ops(tmp_dir, dvc, local_remote, run_copy):
tmp_dir.dvc_gen("foo", "foo")
run_copy("foo", "bar", single_stage=True)
tmp_dir.dvc_gen("lorem", "lorem")
run_copy("lorem", "lorem2", name="copy-lorem-lorem2")
tmp_dir.dvc_gen("ipsum", "ipsum")
run_copy("ipsum", "baz", name="copy-ipsum-baz")
outs = ["foo", "bar", "lorem", "ipsum", "baz", "lorem2"]
remove(dvc.stage_cache.cache_dir)
dvc.push()
# each one's a copy of other, hence 3
assert len(recurse_list_dir(fspath_py35(local_remote))) == 3
clean(outs, dvc)
assert set(dvc.pull(["dvc.yaml"])["added"]) == {"lorem2", "baz"}
clean(outs, dvc)
assert set(dvc.pull()["added"]) == set(outs)
# clean everything in remote and push
clean(local_remote.iterdir())
dvc.push(["dvc.yaml:copy-ipsum-baz"])
assert len(recurse_list_dir(fspath_py35(local_remote))) == 1
clean(local_remote.iterdir())
dvc.push(["dvc.yaml"])
assert len(recurse_list_dir(fspath_py35(local_remote))) == 2
with pytest.raises(StageNotFound):
dvc.push(["dvc.yaml:StageThatDoesNotExist"])
with pytest.raises(StageNotFound):
dvc.pull(["dvc.yaml:StageThatDoesNotExist"])
def _read_metrics(repo, metrics, rev):
tree = RepoTree(repo)
res = {}
for metric in metrics:
if not tree.exists(fspath_py35(metric)):
continue
with tree.open(fspath_py35(metric), "r") as fobj:
try:
# NOTE this also supports JSON
val = yaml.safe_load(fobj)
except yaml.YAMLError:
logger.debug(
"failed to read '%s' on '%s'", metric, rev, exc_info=True
)
continue
val = _extract_metrics(val)
if val:
res[str(metric)] = val
return res
def makedirs(path, exist_ok=False, mode=None):
path = fspath_py35(path)
if mode is None:
os.makedirs(path, exist_ok=exist_ok)
return
# utilize umask to set proper permissions since Python 3.7 the `mode`
# `makedirs` argument no longer affects the file permission bits of
# newly-created intermediate-level directories.
umask = os.umask(0o777 - mode)
try:
os.makedirs(path, exist_ok=exist_ok)
finally:
os.umask(umask)
def verify_metric(self):
if not self.metric:
return
path = fspath_py35(self.path_info)
if not os.path.exists(path):
return
if os.path.isdir(path):
msg = "directory '{}' cannot be used as metrics."
raise DvcException(msg.format(self.path_info))
if not istextfile(path):
msg = "binary file '{}' cannot be used as metrics."
raise DvcException(msg.format(self.path_info))
def protect(path_info):
path = fspath_py35(path_info)
mode = stat.S_IREAD | stat.S_IRGRP | stat.S_IROTH
try:
os.chmod(path, mode)
except OSError as exc:
# In share cache scenario, we might not own the cache file, so we
# need to check if cache file is already protected.
if exc.errno not in [errno.EPERM, errno.EACCES]:
raise
actual = os.stat(path).st_mode
if actual & mode != mode:
raise
def _get_info(self):
if not self.exists:
return {}
with open(fspath_py35(self.path_info), "r") as fobj:
try:
config = yaml.safe_load(fobj)
except yaml.YAMLError as exc:
raise BadParamFileError(
"Unable to read parameters from '{}'".format(self)
) from exc
ret = {}
for param in self.params:
ret[param] = dpath.util.get(config, param, separator=".")
return ret
def _parse_path(self, remote, path):
parsed = urlparse(path)
if parsed.scheme == "remote":
p = remote.path_info / parsed.path.lstrip("/")
else:
# NOTE: we can path either from command line or .dvc file,
# so we should expect both posix and windows style paths.
# PathInfo accepts both, i.e. / works everywhere, \ only on win.
#
# FIXME: if we have Windows path containing / or posix one with \
# then we have #2059 bug and can't really handle that.
p = self.REMOTE.path_cls(path)
if not p.is_absolute():
p = self.stage.wdir / p
abs_p = os.path.abspath(os.path.normpath(fspath_py35(p)))
return self.REMOTE.path_cls(abs_p)
def test_isdir_isfile(tmp_dir, dvc):
tmp_dir.gen({"datafile": "data", "datadir": {"foo": "foo", "bar": "bar"}})
tree = DvcTree(dvc)
assert not tree.isdir("datadir")
assert not tree.isfile("datadir")
assert not tree.isdir("datafile")
assert not tree.isfile("datafile")
dvc.add(["datadir", "datafile"])
shutil.rmtree(fspath_py35(tmp_dir / "datadir"))
(tmp_dir / "datafile").unlink()
assert tree.isdir("datadir")
assert not tree.isfile("datadir")
assert not tree.isdir("datafile")
assert tree.isfile("datafile")
def file_md5(fname):
""" get the (md5 hexdigest, md5 digest) of a file """
from dvc.progress import Tqdm
from dvc.istextfile import istextfile
fname = fspath_py35(fname)
if os.path.exists(fname):
hash_md5 = hashlib.md5()
binary = not istextfile(fname)
size = os.path.getsize(fname)
no_progress_bar = True
if size >= LARGE_FILE_SIZE:
no_progress_bar = False
msg = (
"Computing md5 for a large file '{}'. This is only done once."
)
logger.info(msg.format(relpath(fname)))
name = relpath(fname)
with Tqdm(
desc=name,
disable=no_progress_bar,
total=size,
bytes=True,
leave=False,
) as pbar:
with open(fname, "rb") as fobj:
while True:
data = fobj.read(LOCAL_CHUNK_SIZE)
if not data:
break
if binary:
chunk = data
else:
chunk = dos2unix(data)
hash_md5.update(chunk)
pbar.update(len(data))
return (hash_md5.hexdigest(), hash_md5.digest())
return (None, None)
def save_link(self, path_info):
"""Adds the specified path to the list of links created by dvc. This
list is later used on `dvc checkout` to cleanup old links.
Args:
path_info (dict): path info to add to the list of links.
"""
assert path_info.scheme == "local"
if not os.path.exists(fspath_py35(path_info)):
return
mtime, _ = get_mtime_and_size(path_info, self.repo.tree)
inode = get_inode(path_info)
relative_path = relpath(path_info, self.root_dir)
cmd = "REPLACE INTO {}(path, inode, mtime) " "VALUES (?, ?, ?)".format(
self.LINK_STATE_TABLE)
self._execute(cmd, (relative_path, self._to_sqlite(inode), mtime))
def protect(self, path_info):
path = fspath_py35(path_info)
mode = self.CACHE_MODE
try:
os.chmod(path, mode)
except OSError as exc:
# There is nothing we need to do in case of a read-only file system
if exc.errno == errno.EROFS:
return
# In shared cache scenario, we might not own the cache file, so we
# need to check if cache file is already protected.
if exc.errno not in [errno.EPERM, errno.EACCES]:
raise
actual = stat.S_IMODE(os.stat(path).st_mode)
if actual != mode:
raise
def erepo_dir(tmp_path_factory, monkeypatch):
from dvc.repo import Repo
from dvc.remote.config import RemoteConfig
path = TmpDir(fspath_py35(tmp_path_factory.mktemp("erepo")))
# Chdir for git and dvc to work locally
with path.chdir():
_git_init()
path.dvc = Repo.init()
path.scm = path.dvc.scm
path.scm.commit("init dvc")
rconfig = RemoteConfig(path.dvc.config)
rconfig.add("upstream", path.dvc.cache.local.cache_dir, default=True)
path.scm_add([path.dvc.config.config_file], commit="add remote")
path.dvc.close()
return path
def _open_cached(self, out, remote=None, mode="r", encoding=None):
if out.isdir():
raise ValueError("Can't open a dir")
cache_file = self.cache.local.checksum_to_path_info(out.checksum)
cache_file = fspath_py35(cache_file)
if os.path.exists(cache_file):
return open(cache_file, mode=mode, encoding=encoding)
try:
remote_obj = self.cloud.get_remote(remote)
remote_info = remote_obj.checksum_to_path_info(out.checksum)
return remote_obj.open(remote_info, mode=mode, encoding=encoding)
except RemoteActionNotImplemented:
with self.state:
cache_info = out.get_used_cache(remote=remote)
self.cloud.pull(cache_info, remote=remote)
return open(cache_file, mode=mode, encoding=encoding)
def isfile(path_info):
return os.path.isfile(fspath_py35(path_info))
def exists(path_info):
assert path_info.scheme == "local"
return os.path.lexists(fspath_py35(path_info))
def isdir(path_info):
return os.path.isdir(fspath_py35(path_info))
def open(path_info, mode="r", encoding=None):
return open(fspath_py35(path_info), mode=mode, encoding=encoding)
def getsize(path_info):
return os.path.getsize(fspath_py35(path_info))
