Clarify temporary PD lifecycle in pd-recover #36513

	name: ci / external-links-in-changed-lines (pull_request)

	on:
	pull_request:

	env:
	DOCS_SITE_BASE_URL: "https://docs.pingcap.com"

	permissions:
	contents: read

	jobs:
	linkChecker:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v6
	with:
	fetch-depth: 2

	- name: Collect changed markdown lines with links
	id: changed-lines
	run: \|
	git -c core.quotePath=false diff --unified=0 --diff-filter=AM --no-ext-diff --no-color HEAD^1 HEAD -- '*.md' \|
	perl .github/scripts/extract-changed-markdown-lines.pl .lychee-pr-changed-lines .lychee-pr-inputs.txt

	count=$(wc -l < .lychee-pr-inputs.txt \| tr -d ' ')
	echo "count=${count}" >> "$GITHUB_OUTPUT"

	if [ "$count" -gt 0 ]; then
	echo "has_inputs=true" >> "$GITHUB_OUTPUT"
	sed 's/^/- /' .lychee-pr-inputs.txt
	else
	echo "has_inputs=false" >> "$GITHUB_OUTPUT"
	fi

	- name: Collect doc site href URLs
	if: ${{ steps.changed-lines.outputs.has_inputs == 'true' }}
	run: \|
	tr '\n' '\0' < .lychee-pr-inputs.txt \|
	perl .github/scripts/extract-site-hrefs.pl .lychee-site-hrefs .lychee-site-href-files.txt

	count=$(wc -l < .lychee-site-href-files.txt \| tr -d ' ')
	if [ "$count" -gt 0 ]; then
	cat .lychee-site-href-files.txt >> .lychee-pr-inputs.txt
	sed 's/^/- /' .lychee-site-href-files.txt
	fi

	- name: Link Checker
	if: ${{ steps.changed-lines.outputs.has_inputs == 'true' }}
	uses: lycheeverse/lychee-action@v2
	with:
	fail: true
	failIfEmpty: false
	args: --root-dir $(pwd) --exclude '^file://' -E -i -n -t 45 --files-from .lychee-pr-inputs.txt
	env:
	GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}

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