def test_walk_dir(tmp_dir, dvc):
tmp_dir.gen(
{
"dir": {
"subdir1": {"foo1": "foo1", "bar1": "bar1"},
"subdir2": {"foo2": "foo2"},
"foo": "foo",
"bar": "bar",
}
}
)
dvc.add("dir")
fs = DataFileSystem(repo=dvc)
expected = [
"dir/subdir1",
"dir/subdir2",
"dir/subdir1/foo1",
"dir/subdir1/bar1",
"dir/subdir2/foo2",
"dir/foo",
"dir/bar",
]
actual = []
for root, dirs, files in fs.walk("dir"):
for entry in dirs + files:
actual.append(posixpath.join(root, entry))
assert set(actual) == set(expected)
assert len(actual) == len(expected)
def test_exists(tmp_dir, dvc):
tmp_dir.gen("foo", "foo")
dvc.add("foo")
(tmp_dir / "foo").unlink()
fs = DataFileSystem(repo=dvc)
assert fs.exists("foo")
def test_open(tmp_dir, dvc):
tmp_dir.gen("foo", "foo")
dvc.add("foo")
(tmp_dir / "foo").unlink()
fs = DataFileSystem(repo=dvc)
with fs.open("foo", "r") as fobj:
assert fobj.read() == "foo"
def test_isdir_mixed(tmp_dir, dvc):
tmp_dir.gen({"dir": {"foo": "foo", "bar": "bar"}})
dvc.add(str(tmp_dir / "dir" / "foo"))
fs = DataFileSystem(repo=dvc)
assert fs.isdir("dir")
assert not fs.isfile("dir")
def test_get_hash_dir(tmp_dir, dvc, mocker):
tmp_dir.dvc_gen(
{"dir": {"foo": "foo", "bar": "bar", "subdir": {"data": "data"}}}
)
fs = DataFileSystem(repo=dvc)
hash_file_spy = mocker.spy(dvc_data.hashfile.hash, "hash_file")
assert fs.info("dir")["md5"] == "8761c4e9acad696bee718615e23e22db.dir"
assert not hash_file_spy.called
def test_get_hash_dirty_dir(tmp_dir, dvc):
tmp_dir.dvc_gen({"dir": {"foo": "foo", "bar": "bar"}})
(tmp_dir / "dir" / "baz").write_text("baz")
fs = DataFileSystem(repo=dvc)
expected = "5ea40360f5b4ec688df672a4db9c17d1.dir"
assert fs.info("dir").get("md5") == expected
_, _, obj = stage(dvc.odb.local, "dir", fs, "md5", dry_run=True)
assert obj.hash_info == HashInfo("md5", expected)
def test_open_dirty_hash(tmp_dir, dvc):
tmp_dir.dvc_gen("file", "file")
(tmp_dir / "file").write_text("something")
fs = DataFileSystem(repo=dvc)
with fs.open("file", "r") as fobj:
# NOTE: Unlike DvcFileSystem, DataFileSystem should not
# be affected by a dirty workspace.
assert fobj.read() == "file"
def test_get_hash_dirty_file(tmp_dir, dvc):
tmp_dir.dvc_gen("file", "file")
(tmp_dir / "file").write_text("something")
fs = DataFileSystem(repo=dvc)
expected = "8c7dd922ad47494fc02c388e12c00eac"
assert fs.info("file").get("md5") == expected
_, _, obj = stage(dvc.odb.local, "file", fs, "md5", dry_run=True)
assert obj.hash_info == HashInfo("md5", expected)
def get(url, path, out=None, rev=None, jobs=None):
import shortuuid
from dvc.dvcfile import is_valid_filename
from dvc.external_repo import external_repo
from dvc.fs.callbacks import Callback
out = resolve_output(path, out)
if is_valid_filename(out):
raise GetDVCFileError()
# Creating a directory right beside the output to make sure that they
# are on the same filesystem, so we could take the advantage of
# reflink and/or hardlink. Not using tempfile.TemporaryDirectory
# because it will create a symlink to tmpfs, which defeats the purpose
# and won't work with reflink/hardlink.
dpath = os.path.dirname(os.path.abspath(out))
tmp_dir = os.path.join(dpath, "." + str(shortuuid.uuid()))
# Try any links possible to avoid data duplication.
#
# Not using symlink, because we need to remove cache after we
# are done, and to make that work we would have to copy data
# over anyway before removing the cache, so we might just copy
# it right away.
#
# Also, we can't use theoretical "move" link type here, because
# the same cache file might be used a few times in a directory.
cache_types = ["reflink", "hardlink", "copy"]
try:
with external_repo(
url=url, rev=rev, cache_dir=tmp_dir, cache_types=cache_types
) as repo:
if os.path.isabs(path):
from dvc.fs.data import DataFileSystem
fs = DataFileSystem(repo=repo, workspace="local")
fs_path = path
else:
fs = repo.dvcfs
fs_path = fs.from_os_path(path)
with Callback.as_tqdm_callback(
desc=f"Downloading {fs.path.name(path)}",
unit="files",
) as cb:
fs.get(
fs_path,
os.path.abspath(out),
batch_size=jobs,
callback=cb,
)
finally:
remove(tmp_dir)
def test_open_no_remote(tmp_dir, dvc):
tmp_dir.dvc_gen("file", "file")
(tmp_dir / "file").unlink()
remove(dvc.odb.local.cache_dir)
fs = DataFileSystem(repo=dvc)
with pytest.raises(FileNotFoundError) as exc_info:
with fs.open("file", "r"):
pass
assert isinstance(exc_info.value.__cause__, NoRemoteError)
def test_open_dirty_no_hash(tmp_dir, dvc):
tmp_dir.gen("file", "file")
(tmp_dir / "file.dvc").write_text("outs:\n- path: file\n")
fs = DataFileSystem(repo=dvc)
# NOTE: Unlike DvcFileSystem, DataFileSystem should not
# be affected by a dirty workspace.
with pytest.raises(FileNotFoundError):
with fs.open("file", "r"):
pass
def test_get_hash_granular(tmp_dir, dvc):
tmp_dir.dvc_gen(
{"dir": {"foo": "foo", "bar": "bar", "subdir": {"data": "data"}}}
)
fs = DataFileSystem(repo=dvc)
subdir = "dir/subdir"
assert fs.info(subdir).get("md5") is None
_, _, obj = stage(dvc.odb.local, subdir, fs, "md5", dry_run=True)
assert obj.hash_info == HashInfo(
"md5", "af314506f1622d107e0ed3f14ec1a3b5.dir"
)
data = posixpath.join(subdir, "data")
assert fs.info(data)["md5"] == "8d777f385d3dfec8815d20f7496026dc"
_, _, obj = stage(dvc.odb.local, data, fs, "md5", dry_run=True)
assert obj.hash_info == HashInfo("md5", "8d777f385d3dfec8815d20f7496026dc")
def test_isdir_isfile(tmp_dir, dvc):
tmp_dir.gen({"datafile": "data", "datadir": {"foo": "foo", "bar": "bar"}})
fs = DataFileSystem(repo=dvc)
assert not fs.isdir("datadir")
assert not fs.isfile("datadir")
assert not fs.isdir("datafile")
assert not fs.isfile("datafile")
dvc.add(["datadir", "datafile"])
shutil.rmtree(tmp_dir / "datadir")
(tmp_dir / "datafile").unlink()
assert fs.isdir("datadir")
assert not fs.isfile("datadir")
assert not fs.isdir("datafile")
assert fs.isfile("datafile")
def test_open_in_history(tmp_dir, scm, dvc):
tmp_dir.gen("foo", "foo")
dvc.add("foo")
dvc.scm.add(["foo.dvc", ".gitignore"])
dvc.scm.commit("foo")
tmp_dir.gen("foo", "foofoo")
dvc.add("foo")
dvc.scm.add(["foo.dvc", ".gitignore"])
dvc.scm.commit("foofoo")
for rev in dvc.brancher(revs=["HEAD~1"]):
if rev == "workspace":
continue
fs = DataFileSystem(repo=dvc)
with fs.open("foo", "r") as fobj:
assert fobj.read() == "foo"
def open_by_relpath(self, path, remote=None, mode="r", encoding=None):
"""Opens a specified resource as a file descriptor"""
from dvc.fs.data import DataFileSystem
from dvc.fs.dvc import DvcFileSystem
if os.path.isabs(path):
fs = DataFileSystem(repo=self, workspace="local")
fs_path = path
else:
fs = DvcFileSystem(repo=self, subrepos=True)
fs_path = fs.from_os_path(path)
try:
with fs.open(
fs_path,
mode=mode,
encoding=encoding,
remote=remote,
) as fobj:
yield fobj
except FileNotFoundError as exc:
raise FileMissingError(path) from exc
except IsADirectoryError as exc:
raise DvcIsADirectoryError(f"'{path}' is a directory") from exc
def datafs(self):
from dvc.fs.data import DataFileSystem
return DataFileSystem(repo=self)
def test_walk_missing(tmp_dir, dvc):
fs = DataFileSystem(repo=dvc)
for _ in fs.walk("dir"):
pass
def test_walk_not_a_dir(tmp_dir, dvc):
tmp_dir.dvc_gen("foo", "foo")
fs = DataFileSystem(repo=dvc)
for _ in fs.walk("foo"):
pass
def test_isdvc(tmp_dir, dvc):
tmp_dir.gen({"foo": "foo", "bar": "bar"})
dvc.add("foo")
fs = DataFileSystem(repo=dvc)
assert fs.isdvc("foo")
assert not fs.isdvc("bar")
def test_get_hash_file(tmp_dir, dvc):
tmp_dir.dvc_gen({"foo": "foo"})
fs = DataFileSystem(repo=dvc)
assert fs.info("foo")["md5"] == "acbd18db4cc2f85cedef654fccc4a4d8"
def test_get_key(tmp_dir, dvc, path, key):
fs = DataFileSystem(repo=dvc)
assert fs.fs._get_key(path) == key
