import: allow downloading regular files/dirs tracked by git #2889

Baranowski · 2019-12-04T15:03:27Z

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Thank you for the contribution - we'll try to review it as soon as possible. 🙏

Baranowski · 2019-12-04T15:09:17Z

This is rebased on top of #2837 by danihodovic (for some reason I couldn't find his repo on the list of available forks when submitting the PR).

Baranowski · 2019-12-04T15:10:23Z

dvc/dependency/repo.py

Not sure what's an idiomatic way to avoid this duplication from fetch(), so I left it like this and I'm open to suggestions.

efiop

Hi @Baranowski ! Thanks for the PR 🙏 We need to also test this case #2837 (comment) . Here is an example:

#!/bin/bash

set -x
set -e

rm -rf mytest
mkdir mytest
cd mytest

mkdir erepo
pushd erepo
git init
dvc init
dvc run -O foo 'echo foo > foo'  # note that foo is not cached by dvc, hence the "-O"
git add .
git commit -m "init"
popd

mkdir repo
pushd repo
git init
dvc init
dvc import ../erepo foo
popd

Baranowski · 2019-12-04T18:45:23Z

Related dvc.org issue: iterative/dvc.org#835

Baranowski · 2019-12-04T18:47:17Z

@efiop, sure I will see if danihodovic writes the test soonish so that I can copy it for import. If not, I will write it myself.

efiop · 2019-12-04T20:56:37Z

@Baranowski The tests would be different, so you could work async, I guess :) Looks like the only piece that you are reusing here is _copy_git_file, which is not that crucial.

tests/func/test_import.py

Baranowski · 2019-12-05T13:10:43Z

@efiop, added. The test passed without code modifications, somewhat to my surprise.

efiop · 2019-12-05T14:21:52Z

@Baranowski Btw, please note that get PR was revisited so you might want to adjust your PR accordingly. Sorry for this clash of PRs 🙁

Baranowski · 2019-12-05T19:28:28Z

Thanks for pointing that out, @efiop. Rebased and updated.

efiop · 2019-12-10T17:22:26Z

@Baranowski Fixed get implementation, please rebase. Sorry for the delay 🙁

Baranowski · 2019-12-11T12:26:38Z

@efiop, this is rebased and ready for a review

efiop · 2019-12-11T17:30:55Z

@Baranowski Please check the tests, they are failing on py2.

dvc/dependency/repo.py

efiop · 2019-12-12T04:09:28Z

dvc/dependency/repo.py

Just a note: Not setting to.info as we do down below is fine, as git files are tiny and the hash will be computed later in the output itself.

tests/func/test_import.py

Fixes iterative#2862

This reverts commit 4d59bcd.

efiop · 2019-12-14T18:38:43Z

dvc/dependency/repo.py

+    def _git_status(self):
+        cache_dir = self.repo.cache.local.cache_dir
+        with self._make_repo(
+            cache_dir=os.path.join(cache_dir, "old")


No need to pass cache dir, as you are not pulling anything anyway

Suggested change

cache_dir=os.path.join(cache_dir, "old")

efiop · 2019-12-14T18:38:58Z

dvc/dependency/repo.py

+            cache_dir=os.path.join(cache_dir, "old")
+        ) as old_repo:
+            with self._make_repo(
+                cache_dir=os.path.join(cache_dir, "new"), rev_lock=None


Same here

Suggested change

cache_dir=os.path.join(cache_dir, "new"), rev_lock=None

rev_lock=None

Without cache_dir specified explicitly, both repos seem to be pulled into the same directory, and so the update to the imported file is never detected.

@Baranowski But cache_dir has nothing to do with the update, right? So I suppose the reason might be a bug in the caching system in dvc/external_repo.py?

You are right, @efiop, I think I can see the bug in external_repo.py. Thanks!

@Baranowski please see #2889 (comment) . Let's create a separate ticket.

Suor · 2019-12-15T03:29:22Z

tests/func/test_import.py

+    assert os.path.isfile(str(tmp_dir / dst))
+    assert filecmp.cmp(str(erepo_dir / src), str(tmp_dir / dst), shallow=False)
+    assert tmp_dir.scm.repo.git.check_ignore(str(tmp_dir / dst))


Should only use str() on Path-like objects for presentation purposes, to get str file path one should use fspath(). Or fspath_py35() when passing to an util working with Path-likes in Python 3.6+.

Also, Path has .is_file() and .is_dir(). May also skip .exists() since it is covered with is_file() anyway.

This reverts commit 8985759.

This reverts commit 48bf449.

efiop · 2019-12-17T12:10:25Z

Thanks @Baranowski ! 🙏

This update reflects iterative/dvc#2889

Baranowski · 2019-12-17T18:23:28Z

Other than the dvc status issue, there are also two things worth pointing out:

dvc update for Git-tracked import-ed files fails with the same error msg as dvc status,
You cannot dvc import a file from a Git repo that's not a DVC repo. There is still must be a DVC repo in the remote Git repo. It's sufficient if the DVC repo is empty.

Apologies for raising this only after merging the PR.

shcheklein · 2019-12-17T23:26:35Z

@Baranowski @efiop create issue just to keep track of those?

Baranowski · 2019-12-18T15:50:39Z

Created #2976 and #2977

This update reflects iterative/dvc#2889

Baranowski commented Dec 4, 2019

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Baranowski mentioned this pull request Dec 4, 2019

import: allow downloading regular files/dirs tracked by Git? #2862

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efiop suggested changes Dec 4, 2019

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Baranowski mentioned this pull request Dec 4, 2019

import: allows to download/copy also files that are not output iterative/dvc.org#835

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Baranowski commented Dec 5, 2019

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tests/func/test_import.py Outdated Show resolved Hide resolved

Baranowski force-pushed the import_regulars.squashed branch from 49707d4 to 0738afd Compare December 5, 2019 18:26

jorgeorpinel changed the title ~~WiP import: allow downloading regular files/dirs tracked by git~~ [WIP] import: allow downloading regular files/dirs tracked by git Dec 5, 2019

Baranowski force-pushed the import_regulars.squashed branch from 0738afd to 7fb0a68 Compare December 5, 2019 19:26

weekly-digest bot mentioned this pull request Dec 8, 2019

Weekly Digest (1 December, 2019 - 8 December, 2019) #2919

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Baranowski force-pushed the import_regulars.squashed branch from 7fb0a68 to e137887 Compare December 11, 2019 12:22

Baranowski changed the title ~~[WIP] import: allow downloading regular files/dirs tracked by git~~ import: allow downloading regular files/dirs tracked by git Dec 11, 2019

Baranowski marked this pull request as ready for review December 11, 2019 12:25

efiop reviewed Dec 12, 2019

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dvc/dependency/repo.py Outdated Show resolved Hide resolved

efiop reviewed Dec 12, 2019

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Suor suggested changes Dec 12, 2019

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tests/func/test_import.py Outdated Show resolved Hide resolved

Baranowski added 5 commits December 14, 2019 14:08

import: allow downloading regular files/dirs tracked by git

c04f5a0

Fixes iterative#2862

New tests use tmp_dir

0ee6998

dependency/repo: fix py2 support

a36ac0c

os.path.isfile(str(...))

5ceaf5a

os.path.isdir(str(...))

c8c2855

Baranowski added 3 commits December 14, 2019 14:08

Wrap tmp_dir in str()

11d890a

DependencyREPO.status: handle git-tracked files

48bf449

_git_status(): use different cache dirs

8985759

Baranowski force-pushed the import_regulars.squashed branch from 9aa4c06 to 8985759 Compare December 14, 2019 12:43

Baranowski added 2 commits December 14, 2019 19:38

test_status_imported_git_file

4d59bcd

Revert "test_status_imported_git_file"

5915602

This reverts commit 4d59bcd.

efiop reviewed Dec 14, 2019

View reviewed changes

Suor suggested changes Dec 15, 2019

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Baranowski mentioned this pull request Dec 15, 2019

status: implement support for import-ed files #2959

Closed

Baranowski added 3 commits December 15, 2019 18:14

Revert "_git_status(): use different cache dirs"

7461f14

This reverts commit 8985759.

Revert "DependencyREPO.status: handle git-tracked files"

c02c016

This reverts commit 48bf449.

Use fspath() in tests

ad98f0f

efiop approved these changes Dec 17, 2019

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efiop requested review from a user and pared December 17, 2019 01:48

Suor approved these changes Dec 17, 2019

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efiop merged commit 032d094 into iterative:master Dec 17, 2019

Baranowski added a commit to Baranowski/dvc.org that referenced this pull request Dec 17, 2019

import: supports also non-output files/dirs

4bff952

This update reflects iterative/dvc#2889

Baranowski mentioned this pull request Dec 17, 2019

import: supports also non-output files/dirs iterative/dvc.org#873

Merged

This was referenced Dec 18, 2019

update: Handle Git-tracked import-ed files #2976

Closed

import: Handle non-DVC Git repositories #2977

Closed

Baranowski added a commit to Baranowski/dvc.org that referenced this pull request Dec 18, 2019

import: supports also non-output files/dirs

41cb722

This update reflects iterative/dvc#2889

weekly-digest bot mentioned this pull request Dec 22, 2019

Weekly Digest (15 December, 2019 - 22 December, 2019) #2996

Closed

jorgeorpinel mentioned this pull request Jan 6, 2020

get/import: help output should reflect non-DVC Git repo support #3077

Closed

	cache_dir=os.path.join(cache_dir, "new"), rev_lock=None
	rev_lock=None

import: allow downloading regular files/dirs tracked by git #2889

import: allow downloading regular files/dirs tracked by git #2889

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