⚙ D8218 feat: Make the Gogs lister incremental

KShivendu created this revision.Aug 9 2022, 7:45 AM

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commit bb14166804858e0a0f1afcaa25d33c66403f8815
Author: KShivendu <shivendu@iitbhilai.ac.in>
Date:   Tue Aug 9 11:13:32 2022 +0530

    feat: Make the Gogs lister incremental

See https://jenkins.softwareheritage.org/job/DLS/job/tests-on-diff/576/ for more details.

Harbormaster completed remote builds in B30701: Diff 29633.Aug 9 2022, 7:50 AM

KShivendu requested review of this revision.Aug 9 2022, 7:50 AM

test: Improve variable names and comments in gogs lister tests

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commit 642286955d9183eae1858ee4f4d9ad206d633918
Author: KShivendu <shivendu@iitbhilai.ac.in>
Date:   Tue Aug 9 11:36:53 2022 +0530

    test: Improve variable names and comments in gogs lister tests

commit bb14166804858e0a0f1afcaa25d33c66403f8815
Author: KShivendu <shivendu@iitbhilai.ac.in>
Date:   Tue Aug 9 11:13:32 2022 +0530

    feat: Make the Gogs lister incremental

See https://jenkins.softwareheritage.org/job/DLS/job/tests-on-diff/577/ for more details.

Harbormaster completed remote builds in B30702: Diff 29634.Aug 9 2022, 8:12 AM

KShivendu mentioned this in T1721: Implementation of Gogs Lister.Aug 9 2022, 8:16 AM

vlorentz added a subscriber: vlorentz.Aug 9 2022, 3:12 PM

vlorentz added inline comments.

swh/lister/gogs/lister.py
143	not covered?

test: Add test for incremental gogs lister and improve existing tests

Add test for incremental listing in gogs
Use 3 mocked pages instead of 2 in existing tests
In test_gogs_list_http_error, successfully parse 1 page before throwing HTTPError
Minor improvement in variables names (P1, P2, P3)

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Applying: feat: Make the Gogs lister incremental
Applying: test: Improve variable names and comments in gogs lister tests
Applying: test: Add test for incremental gogs lister and improve existing tests

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commit b2557d51dce0981cdbc405d466324e99076cfd73
Author: KShivendu <shivendu@iitbhilai.ac.in>
Date:   Thu Aug 11 09:51:24 2022 +0530

    test: Add test for incremental gogs lister and improve existing tests

commit 1e4556b621f0b35b692f168995c38558430a31b7
Author: KShivendu <shivendu@iitbhilai.ac.in>
Date:   Tue Aug 9 11:36:53 2022 +0530

    test: Improve variable names and comments in gogs lister tests

commit 3a7288a149195d3be35f42dc2163cbf4b75c1680
Author: KShivendu <shivendu@iitbhilai.ac.in>
Date:   Tue Aug 9 11:13:32 2022 +0530

    feat: Make the Gogs lister incremental

See https://jenkins.softwareheritage.org/job/DLS/job/tests-on-diff/580/ for more details.

Harbormaster completed remote builds in B30757: Diff 29703.Aug 11 2022, 6:29 AM

fix: Improvements for edge cases and coverage

state.last_seen_next_link should be None if last page is encountered (no next link)
assert page.repos is not None in get_origins_from_page
Improve comments and formatting

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Patch application report for D8218 (id=29704)

Rebasing onto cee6bcb514...

First, rewinding head to replay your work on top of it...
Applying: feat: Make the Gogs lister incremental
Applying: test: Improve variable names and comments in gogs lister tests
Applying: test: Add test for incremental gogs lister and improve existing tests
Applying: fix: Improvements for edge cases and coverage

Changes applied before test

commit 549190d9035b556954478f145849d05f31924cb5
Author: KShivendu <shivendu@iitbhilai.ac.in>
Date:   Thu Aug 11 10:17:13 2022 +0530

    fix: Improvements for edge cases and coverage
    
    - state.last_seen_next_link should be None if last page is encountered
      (no next link)
    - `assert page.repos is not None` in get_origins_from_page
    - Improve comments and formatting

commit 590dd1a36165b8eed65d035897a88f3496c783a9
Author: KShivendu <shivendu@iitbhilai.ac.in>
Date:   Thu Aug 11 09:51:24 2022 +0530

    test: Add test for incremental gogs lister and improve existing tests

commit 5d83c3f66f8fc03edb30b99db86682e87e561787
Author: KShivendu <shivendu@iitbhilai.ac.in>
Date:   Tue Aug 9 11:36:53 2022 +0530

    test: Improve variable names and comments in gogs lister tests

commit e43e17f9712a943a9d7457f00fdef90172ada4ea
Author: KShivendu <shivendu@iitbhilai.ac.in>
Date:   Tue Aug 9 11:13:32 2022 +0530

    feat: Make the Gogs lister incremental

Link to build: https://jenkins.softwareheritage.org/job/DLS/job/tests-on-diff/581/
See console output for more information: https://jenkins.softwareheritage.org/job/DLS/job/tests-on-diff/581/console

Harbormaster failed remote builds in B30758: Diff 29704!Aug 11 2022, 6:56 AM

test: fix test failures

make last_seen_next_link = None if the last page is encountered
in test_gogs_incremental_lister, throw 400 in the 1st listing attempt and succeed in the 2nd one.

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Applying: feat: Make the Gogs lister incremental

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commit 6a49b9dfddc78e13bc3e3629005db93dd6dd4a40
Author: KShivendu <shivendu@iitbhilai.ac.in>
Date:   Tue Aug 9 11:13:32 2022 +0530

    feat: Make the Gogs lister incremental

See https://jenkins.softwareheritage.org/job/DLS/job/tests-on-diff/582/ for more details.

Harbormaster completed remote builds in B30759: Diff 29705.Aug 11 2022, 7:32 AM

vlorentz added inline comments.Aug 11 2022, 10:56 AM

swh/lister/gogs/tests/test_lister.py
235–238	Does it really mock the first listing attempt? I would expect the second request (with `P2`) not to have a `Link` header, so the lister wouldn't send the third request (with `P3`).

KShivendu added inline comments.Aug 11 2022, 2:18 PM

swh/lister/gogs/tests/test_lister.py
235–238	I would expect the second request (with P2) not to have a Link header If `P2` doesn't provide a "next" link header then the lister will throw an error because of `assert len(response.links) > 0, "API changed: no Link header found"` (same happens for Gitea lister) What is the difference between a normal lister and an incremental one? It is just that it restarts itself from the last state stored in the scheduler on running `lister.run()`

KShivendu added inline comments.Aug 11 2022, 2:32 PM

swh/lister/gogs/tests/test_lister.py
235–238	*If `P2` doesn't provide a ~~"next"~~ link header But, if it does provide a link header without a "next" link, then the first attempt will stop at page 2 and `last_seen_next_link` will be `None`. Now when `lister.run()` is used for the second time, it will recrawl both the pages again. In the current test, the first lister fails and `last_seen_next_link` points to page 3. Hence in the second attempt, the lister only crawls that. Isn't this the expected behavior? Am I missing something?

vlorentz added inline comments.Aug 11 2022, 2:45 PM

swh/lister/gogs/tests/test_lister.py

235–238

It doesn't make sense for the last page to link to another page that doesn't exist.

I didn't try with Gogs as their API requires authentication, but with Gitea:

$ curl -i https://try.gitea.io/api/v1/repos/search/\?limit\=3 | grep "^link"
link: <https://try.gitea.io/api/v1/repos/search/?limit=3&page=2>; rel="next",<https://try.gitea.io/api/v1/repos/search/?limit=3&page=1753>; rel="last"

$ curl -i https://try.gitea.io/api/v1/repos/search/\?limit\=3\&page\=1753 | grep "^link"
link: <https://try.gitea.io/api/v1/repos/search/?limit=3&page=1>; rel="first",<https://try.gitea.io/api/v1/repos/search/?limit=3&page=1752>; rel="prev"

So there is indeed a link header, but no next link.

KShivendu added a subscriber: ardumont.Aug 12 2022, 1:11 PM

KShivendu added inline comments.

swh/lister/gogs/tests/test_lister.py
235–238	It doesn't make sense for the last page to link to another page that doesn't exist. Actually, there are instances like T4423 where certain pages cannot be crawled because of some fatal repos. I've created an issue in the upstream but we haven't received any update from the Gogs maintainers. I proposed T1721#88903 to fix this. You can read @ardumont's opinion on this in T1721#88915

vlorentz added inline comments.Aug 12 2022, 2:12 PM

swh/lister/gogs/tests/test_lister.py
235–238	but that's not what this test does. This test is written as a "normal" listing run and ends with a 400. T4423 is a bug, which is not normal, and ends with a 500.

Introduce last_seen_repo_id in GogsListerState to properly set the value of self.updated in`finalize()`
Update incremental listing test to test happy flow (instead of the buggy T4423)

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Applying: feat: Make the Gogs lister incremental
Applying: feat: Introduce last_seen_repo_id in GogsListerState and update incremental listing test

Changes applied before test

commit 577d6104d6d67eec60d9661ca33dcc63609a9b9a
Author: KShivendu <shivendu@iitbhilai.ac.in>
Date:   Mon Aug 15 16:24:22 2022 +0530

    feat: Introduce last_seen_repo_id in GogsListerState and update incremental listing test

commit 5464574bba36bfa0e5f317b2bbd5bb3f75c9bc4f
Author: KShivendu <shivendu@iitbhilai.ac.in>
Date:   Tue Aug 9 11:13:32 2022 +0530

    feat: Make the Gogs lister incremental

See https://jenkins.softwareheritage.org/job/DLS/job/tests-on-diff/585/ for more details.

Harbormaster completed remote builds in B30780: Diff 29729.Aug 16 2022, 5:11 AM

Please add a test for when a new page (P4) is added after P3

Introduce 4th page in incremental listing test
Improve comments

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First, rewinding head to replay your work on top of it...
Applying: feat: Make the Gogs lister incremental
Applying: feat: Introduce last_seen_repo_id in GogsListerState and update incremental listing test
Applying: test: Introduce 4th page and update the incremental listing test accordingly

Changes applied before test

commit a4dc4f9ec4348d379efca1e65bd8a522d44e1b21
Author: KShivendu <shivendu@iitbhilai.ac.in>
Date:   Wed Aug 17 13:10:19 2022 +0530

    test: Introduce 4th page and update the incremental listing test accordingly

commit 64fb84ed6716325c55c1fcb1bae57ce9a0b24c9f
Author: KShivendu <shivendu@iitbhilai.ac.in>
Date:   Mon Aug 15 16:24:22 2022 +0530

    feat: Introduce last_seen_repo_id in GogsListerState and update incremental listing test

commit a93300c88d7b0fa7b5a26f0df05d7c09c884a421
Author: KShivendu <shivendu@iitbhilai.ac.in>
Date:   Tue Aug 9 11:13:32 2022 +0530

    feat: Make the Gogs lister incremental

See https://jenkins.softwareheritage.org/job/DLS/job/tests-on-diff/592/ for more details.

Harbormaster completed remote builds in B30824: Diff 29772.Aug 17 2022, 10:12 AM

Thanks!

This revision is now accepted and ready to land.Aug 17 2022, 11:30 AM

Squash commits and rebase

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commit 6a53a6ad06d5677d246732a8525fc931f2a2c7b1
Author: KShivendu <shivendu@iitbhilai.ac.in>
Date:   Tue Aug 9 11:13:32 2022 +0530

    feat: Make the Gogs lister incremental

See https://jenkins.softwareheritage.org/job/DLS/job/tests-on-diff/593/ for more details.

Harbormaster completed remote builds in B30830: Diff 29778.Aug 17 2022, 11:37 AM

Closed by commit rDLS6a53a6ad06d5: feat: Make the Gogs lister incremental (authored by KShivendu). · Explain WhyAug 17 2022, 11:38 AM

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KShivendu added a commit: rDLS6a53a6ad06d5: feat: Make the Gogs lister incremental.

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swh/lister/gogs/lister.py

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swh/lister/gogs/tests/test_lister.py

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