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CI: Link checker script #27116

Merged
merged 2 commits into from
Oct 17, 2023
Merged

CI: Link checker script #27116

merged 2 commits into from
Oct 17, 2023

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vipul-21
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@vipul-21 vipul-21 commented Jul 27, 2023

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Enabling the link checker for the CI.

ci: Enable link checker to ensure that all links in documentation are valid

Related: #10601

@vipul-21 vipul-21 requested a review from a team as a code owner July 27, 2023 15:21
@vipul-21 vipul-21 requested a review from learnitall July 27, 2023 15:21
@maintainer-s-little-helper maintainer-s-little-helper bot added the dont-merge/needs-release-note-label The author needs to describe the release impact of these changes. label Jul 27, 2023
@github-actions github-actions bot added the kind/community-contribution This was a contribution made by a community member. label Jul 27, 2023
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@qmonnet Please let me know your thoughts about this one. Appreciate the help !

@qmonnet qmonnet self-requested a review July 27, 2023 15:25
@qmonnet qmonnet added area/documentation Impacts the documentation, including textual changes, sphinx, or other doc generation code. area/CI-improvement Topic or proposal to improve the Continuous Integration workflow release-note/ci This PR makes changes to the CI. dont-merge/blocked Another PR must be merged before this one. labels Jul 27, 2023
@maintainer-s-little-helper maintainer-s-little-helper bot removed the dont-merge/needs-release-note-label The author needs to describe the release impact of these changes. label Jul 27, 2023
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qmonnet commented Jul 27, 2023

The change looks good, now we need to see how it looks like in practice in the CI:

  • How long does the workflow take to run (I can already notice it's longer than usual, it's becoming one of the longest among workflows that are triggered automatically)
  • How well does it work, in particular, can it validate all links or does it hit some rate limiting (which is likely, especially if several instances of the workflow run in parallel on different PRs)
  • How stable it is, meaning, does it fail often to validate a link because of external error - We'll need to run the workflow several times to get an idea.

@qmonnet qmonnet requested review from a team and christarazi and removed request for a team July 27, 2023 15:34
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qmonnet commented Jul 27, 2023

Turning to draft given it's blocked on #26880 for now.

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qmonnet commented Jul 27, 2023

Documentation workflow took 11 minutes to complete. I hope it gets faster once more links are fixed and it doesn't have to wait for timeouts.

@qmonnet qmonnet marked this pull request as draft July 27, 2023 15:36
@qmonnet qmonnet added dont-merge/needs-rebase This PR needs to be rebased because it has merge conflicts. and removed dont-merge/blocked Another PR must be merged before this one. labels Jul 28, 2023
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vipul-21 commented Aug 9, 2023

@qmonnet Need some help regarding fixing the issue:

warning: Circular inclusion in the include directive example: WARNING: circular inclusion in "include" directive. " I don't see any circular inclusion.

I went through the issues in the docutils and found this: https://sourceforge.net/p/docutils/bugs/459/ . It seems to have been resolved in version 0.18 of docutils and only exixts in version 0.17.
I tried upgrading the version of docutils and see if the relevant packages dependencies could be resolved, but the pip -r time out due to maxdepth reached while resolving dependencies.

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qmonnet commented Aug 10, 2023

I'm not sure we can update to Docutils 0.18 yet, last time I checked we were still stuck with some dependencies on 0.17 somewhere. Possibly for the theme, I don't think we've rebased our fork on top of readthedocs/sphinx_rtd_theme#1381 yet.

If it's just dependent on 0.17, let's filter out this warning with a comment in the script telling to remove it after we've upgraded to a newer docutils version?

@learnitall learnitall removed their request for review August 10, 2023 17:38
@vipul-21 vipul-21 force-pushed the enable_link_checker branch 3 times, most recently from 3efb255 to 0208bdb Compare August 11, 2023 02:43
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Looking at my latest run, it was maybe not the failure() that blocked the artifact download, but possibly the needs.links-checker.outputs.status == 'failure' instead: I don't think we're ever setting this output for links-checker? Looking at a similar usage of outputs.status in file .github/workflows/conformance-ginkgo.yaml, there is echo "status=failure" >> $GITHUB_OUTPUT to set the status, it's not automatic. So we probably need something similar.

Annoyingly, the link checker step also failed (consistently, it seems) on this new run, and I've no idea what's causing it:

[...]
reading sources... [ 58%] gettingstarted/hubble_setup
reading sources... [ 58%] gettingstarted/k8s-install-default
Please fix the following documentation warnings:

Exception occurred:
  File "/usr/local/lib/python3.11/site-packages/docutils/parsers/rst/states.py", line 2297, in comment
    self.document.include_log.pop()
IndexError: pop from empty list
The full traceback has been saved in /tmp/sphinx-err-1xnht2gf.log, if you want to report the issue to the developers.
Please also report this if it was a user error, so that a better error message can be provided next time.
A bug report can be filed in the tracker at <https://github.com/sphinx-doc/sphinx/issues>. Thanks!

Adding the warnings to the file.

Did you observe this before, by any chance?

Documentation/check-links.sh Outdated Show resolved Hide resolved
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qmonnet commented Sep 27, 2023

I can reproduce the link checker issue locally and dump the logs, but that's not super useful. Looks like a Sphinx bug (we recently bumped the version and updated the docs-builder image). I'd like to check if this happens with the latest version, but I think we're stuck to the current one because of some dependencies 😞 [EDIT: Or just the Netlify preview that doesn't know about the latest versions yet].

$ docker run --workdir /github/workspace --rm --entrypoint "./Documentation/check-links.sh" -v $PWD:"/github/workspace" quay.io/cilium/docs-builder:9eb38bbec80e56a8a498b0cac42456e42cfe7f04@sha256:9936a2f648cb25cad6cf1fe5772ad1a5800d0033eb88b0dce77ad70a083661d
Logs from Sphinx
# Platform:         linux; (Linux-6.2.0-33-generic-x86_64-with)
# Sphinx version:   7.1.2
# Python version:   3.11.5 (CPython)
# Docutils version: 0.18.1
# Jinja2 version:   3.1.2
# Pygments version: 2.16.1

# Last messages:
#   gettingstarted/hubble_intro
#

#   reading sources... [ 58%]
#   gettingstarted/hubble_setup
#

#   reading sources... [ 58%]
#   gettingstarted/k8s-install-default
#

# Loaded extensions:
#   sphinx.ext.mathjax (7.1.2)
#   alabaster (0.7.13)
#   sphinxcontrib.applehelp (1.0.4)
#   sphinxcontrib.devhelp (1.0.2)
#   sphinxcontrib.htmlhelp (2.0.1)
#   sphinxcontrib.serializinghtml (1.1.5)
#   sphinxcontrib.qthelp (1.0.3)
#   myst_parser (2.0.0)
#   sphinx.ext.ifconfig (7.1.2)
#   sphinx.ext.githubpages (7.1.2)
#   sphinx.ext.extlinks (7.1.2)
#   sphinxcontrib.httpdomain (unknown version)
#   sphinxcontrib.openapi (0.8.1)
#   sphinx_tabs.tabs (unknown version)
#   sphinxcontrib.googleanalytics (0.3)
#   sphinxcontrib.spelling (8.0.0)
#   versionwarning.extension (1.1.2)

# Traceback:
Traceback (most recent call last):
  File "/usr/local/lib/python3.11/site-packages/sphinx/cmd/build.py", line 290, in build_main
    app.build(args.force_all, args.filenames)
  File "/usr/local/lib/python3.11/site-packages/sphinx/application.py", line 351, in build
    self.builder.build_update()
  File "/usr/local/lib/python3.11/site-packages/sphinx/builders/__init__.py", line 290, in build_update
    self.build(to_build,
  File "/usr/local/lib/python3.11/site-packages/sphinx/builders/__init__.py", line 310, in build
    updated_docnames = set(self.read())
                           ^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/sphinx/builders/__init__.py", line 417, in read
    self._read_serial(docnames)
  File "/usr/local/lib/python3.11/site-packages/sphinx/builders/__init__.py", line 438, in _read_serial
    self.read_doc(docname)
  File "/usr/local/lib/python3.11/site-packages/sphinx/builders/__init__.py", line 494, in read_doc
    publisher.publish()
  File "/usr/local/lib/python3.11/site-packages/docutils/core.py", line 217, in publish
    self.document = self.reader.read(self.source, self.parser,
                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/sphinx/io.py", line 104, in read
    self.parse()
  File "/usr/local/lib/python3.11/site-packages/docutils/readers/__init__.py", line 78, in parse
    self.parser.parse(self.input, document)
  File "/usr/local/lib/python3.11/site-packages/sphinx/parsers.py", line 80, in parse
    self.statemachine.run(inputlines, document, inliner=self.inliner)
  File "/usr/local/lib/python3.11/site-packages/docutils/parsers/rst/states.py", line 170, in run
    results = StateMachineWS.run(self, input_lines, input_offset,
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/docutils/statemachine.py", line 240, in run
    context, next_state, result = self.check_line(
                                  ^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/docutils/statemachine.py", line 452, in check_line
    return method(match, context, next_state)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/docutils/parsers/rst/states.py", line 3018, in text
    self.section(title.lstrip(), source, style, lineno + 1, messages)
  File "/usr/local/lib/python3.11/site-packages/docutils/parsers/rst/states.py", line 327, in section
    self.new_subsection(title, lineno, messages)
  File "/usr/local/lib/python3.11/site-packages/docutils/parsers/rst/states.py", line 393, in new_subsection
    newabsoffset = self.nested_parse(
                   ^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/docutils/parsers/rst/states.py", line 281, in nested_parse
    state_machine.run(block, input_offset, memo=self.memo,
  File "/usr/local/lib/python3.11/site-packages/docutils/parsers/rst/states.py", line 196, in run
    results = StateMachineWS.run(self, input_lines, input_offset)
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/docutils/statemachine.py", line 240, in run
    context, next_state, result = self.check_line(
                                  ^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/docutils/statemachine.py", line 452, in check_line
    return method(match, context, next_state)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/docutils/parsers/rst/states.py", line 2779, in underline
    self.section(title, source, style, lineno - 1, messages)
  File "/usr/local/lib/python3.11/site-packages/docutils/parsers/rst/states.py", line 327, in section
    self.new_subsection(title, lineno, messages)
  File "/usr/local/lib/python3.11/site-packages/docutils/parsers/rst/states.py", line 393, in new_subsection
    newabsoffset = self.nested_parse(
                   ^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/docutils/parsers/rst/states.py", line 281, in nested_parse
    state_machine.run(block, input_offset, memo=self.memo,
  File "/usr/local/lib/python3.11/site-packages/docutils/parsers/rst/states.py", line 196, in run
    results = StateMachineWS.run(self, input_lines, input_offset)
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/docutils/statemachine.py", line 240, in run
    context, next_state, result = self.check_line(
                                  ^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/docutils/statemachine.py", line 452, in check_line
    return method(match, context, next_state)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/docutils/parsers/rst/states.py", line 2352, in explicit_markup
    nodelist, blank_finish = self.explicit_construct(match)
                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/docutils/parsers/rst/states.py", line 2364, in explicit_construct
    return method(self, expmatch)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/docutils/parsers/rst/states.py", line 2101, in directive
    return self.run_directive(
           ^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/docutils/parsers/rst/states.py", line 2151, in run_directive
    result = directive_instance.run()
             ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/sphinx_tabs/tabs.py", line 103, in run
    self.state.nested_parse(self.content, self.content_offset, node)
  File "/usr/local/lib/python3.11/site-packages/docutils/parsers/rst/states.py", line 281, in nested_parse
    state_machine.run(block, input_offset, memo=self.memo,
  File "/usr/local/lib/python3.11/site-packages/docutils/parsers/rst/states.py", line 196, in run
    results = StateMachineWS.run(self, input_lines, input_offset)
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/docutils/statemachine.py", line 240, in run
    context, next_state, result = self.check_line(
                                  ^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/docutils/statemachine.py", line 452, in check_line
    return method(match, context, next_state)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/docutils/parsers/rst/states.py", line 2354, in explicit_markup
    self.explicit_list(blank_finish)
  File "/usr/local/lib/python3.11/site-packages/docutils/parsers/rst/states.py", line 2379, in explicit_list
    newline_offset, blank_finish = self.nested_list_parse(
                                   ^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/docutils/parsers/rst/states.py", line 318, in nested_list_parse
    state_machine.run(block, input_offset, memo=self.memo,
  File "/usr/local/lib/python3.11/site-packages/docutils/parsers/rst/states.py", line 196, in run
    results = StateMachineWS.run(self, input_lines, input_offset)
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/docutils/statemachine.py", line 240, in run
    context, next_state, result = self.check_line(
                                  ^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/docutils/statemachine.py", line 452, in check_line
    return method(match, context, next_state)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/docutils/parsers/rst/states.py", line 2657, in explicit_markup
    nodelist, blank_finish = self.explicit_construct(match)
                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/docutils/parsers/rst/states.py", line 2364, in explicit_construct
    return method(self, expmatch)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/docutils/parsers/rst/states.py", line 2101, in directive
    return self.run_directive(
           ^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/docutils/parsers/rst/states.py", line 2151, in run_directive
    result = directive_instance.run()
             ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/sphinx_tabs/tabs.py", line 220, in run
    node = super().run()
           ^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/sphinx_tabs/tabs.py", line 197, in run
    self.state.nested_parse(self.content[1:], self.content_offset, panel)
  File "/usr/local/lib/python3.11/site-packages/docutils/parsers/rst/states.py", line 281, in nested_parse
    state_machine.run(block, input_offset, memo=self.memo,
  File "/usr/local/lib/python3.11/site-packages/docutils/parsers/rst/states.py", line 196, in run
    results = StateMachineWS.run(self, input_lines, input_offset)
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/docutils/statemachine.py", line 240, in run
    context, next_state, result = self.check_line(
                                  ^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/docutils/statemachine.py", line 452, in check_line
    return method(match, context, next_state)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/docutils/parsers/rst/states.py", line 2352, in explicit_markup
    nodelist, blank_finish = self.explicit_construct(match)
                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/docutils/parsers/rst/states.py", line 2370, in explicit_construct
    nodelist, blank_finish = self.comment(match)
                             ^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/docutils/parsers/rst/states.py", line 2297, in comment
    self.document.include_log.pop()
IndexError: pop from empty list

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qmonnet commented Sep 27, 2023

Looks like a bug caused by the bump of docutils from 0.17.1 to 0.18.1 - bisecting shows it is introduced by https://repo.or.cz/docutils.git/commitdiff/93dc79108625a3af6be11a3eb85e50be59b2c910?hp=0515f37ca519ecfde133040425a06b6e4887aea0.

Not sure how to handle this, though 🤔

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ti-mo commented Oct 9, 2023

Ping, anything we can do to move this along?

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qmonnet commented Oct 9, 2023

Thanks Timo. I must admit I'm a bit stuck here. I talked with @zacharysarah about this PR, and we don't see a good path forward.

This bug in the link checker is clearly an issue. We know the cause, but it's tricky to address.

  • We can't just ignore the bug if we enable the link checker, because it won't run at all, this is not a warning we could just skip.

  • We could report or try to fix the bug upstream. However, we're already behind on docutils versions: we're limited to 0.18.1 because of the sphinx-tabs extension, when 0.20.0 is out already. This means that even if the issue is fixed upstream, we won't be able to pull it immediately, likely not before a few years. Even if sphinx-tabs got updated quickly, there's still an issue with Netlify not being aware of the latest versions of Sphinx and dependencies in its repo, forcing us to stay a few versions behind. So I don't see the fix available from upstream before a couple years at least.

  • We could revert to a working version of docutils, but this would mean downgrading Sphinx and several other add-ons - in other words, reverting all the recent version changes, and this may get us stuck with older versions until the bug is fixed upstream - which will take a while, as explained above. I don't really expect security vulnerabilities in Sphinx or its add-ons to be exploitable, but being stuck on old versions does not sound great.

  • The bug itself is easy to “fix” (although I'm not sure this is the right fix). We could use a fork of docutils to add a fix, which is not difficult to do but means more work for future upgrades.

Add to that that there are internal discussions about moving away from Sphinx in the future (but nothing decided yet), so there's little appetite for long-term commitments/solutions at the moment.

Maybe the simplest option for now would be to drop the CI workflow (sorry Vipul 😢), and try to merge check-links.sh with the accompanying config update and doc fixes. Possibly adding an echo at the beginning of the script to print a warning about the fact it may be broken, and link to this discussion?

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I can remove the workflow and update the script, if that is the suggested path forward. Let me know.

@vipul-21 vipul-21 force-pushed the enable_link_checker branch 2 times, most recently from a13bb95 to 966d910 Compare October 11, 2023 18:25
@vipul-21 vipul-21 requested a review from qmonnet October 11, 2023 18:26
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The changes look all good, thanks a lot.

On the second commit, can you please:

  • Update the commit title, given that we no longer enable the link checker in the CI
  • Add a commit description that summarises what we're doing here (and why we don't enable it in CI)
  • Drop the Co-authored-by: tag, or updated it with my work email address (<quentin@isovalent.com>)

We should be all good after that

@qmonnet qmonnet removed request for a team and viktor-kurchenko October 12, 2023 08:02
Link checker is separated out from the check-build.sh into a separate
script. It creates a separate file with the broken links and filters
based on the known/expected errors. It is not added to the github
workflow as there is a known issue in the docutils pkg used.
(Issue: cilium#27116 (comment))

Co-authored-by: Quentin Monnet <quentin@isovalent.com>
Signed-off-by: Vipul Singh <vipul21sept@gmail.com>
@vipul-21 vipul-21 changed the title CI: enabling link checker CI: Link checker script Oct 12, 2023
@vipul-21 vipul-21 requested a review from qmonnet October 12, 2023 17:27
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Thanks a lot for this work!

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qmonnet commented Oct 16, 2023

/test

@joestringer joestringer removed the request for review from christarazi October 16, 2023 21:42
@maintainer-s-little-helper maintainer-s-little-helper bot added the ready-to-merge This PR has passed all tests and received consensus from code owners to merge. label Oct 16, 2023
@qmonnet qmonnet removed the ready-to-merge This PR has passed all tests and received consensus from code owners to merge. label Oct 16, 2023
@maintainer-s-little-helper maintainer-s-little-helper bot added the ready-to-merge This PR has passed all tests and received consensus from code owners to merge. label Oct 17, 2023
@joestringer joestringer merged commit 1a1f98a into cilium:main Oct 17, 2023
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Thanks for the contribution, merged!

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