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fix: download schema via REST API to avoid raw.githubusercontent.com 429s #264

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fix: download schema via REST API to avoid raw.githubusercontent.com 429s #264

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fix: download schema via REST API to avoid raw.githubusercontent.com …
stekern Jul 6, 2026
6e95e3e
refactor: prefer POSIX shell constructs
stekern Jul 6, 2026
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29 changes: 25 additions & 4 deletions build-gp-config/action.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -31,16 +31,37 @@ runs:
shell: bash --noprofile --norc -euo pipefail {0}
env:
CONFIG_FILE: ${{ inputs.config-file }}
GH_TOKEN: ${{ github.token }}
run: |
schema_url="$(jq -r '."$schema" // empty' "$CONFIG_FILE")"
if [ "$schema_url" == "" ]; then
schemafile="$(jq -r '."$schema" // empty' "$CONFIG_FILE")"
if [ "$schemafile" = "" ]; then
echo "::error::Config file $CONFIG_FILE is not using any schema."
exit 1
fi

# Download the schema via the REST API: unauthenticated fetches from
# raw.githubusercontent.com are rate-limited per runner IP (HTTP 429),
# and that host ignores auth tokens.
# See https://github.com/orgs/community/discussions/160828
case "$schemafile" in
https://raw.githubusercontent.com/*)
# https://raw.githubusercontent.com/OWNER/REPO/[refs/heads/|refs/tags/]REF/PATH -> repos/OWNER/REPO/contents/PATH?ref=REF
api_path="$(echo "$schemafile" | sed \
-e 's|^\(https://raw\.githubusercontent\.com/[^/]\{1,\}/[^/]\{1,\}\)/refs/heads/|\1/|' \
-e 's|^\(https://raw\.githubusercontent\.com/[^/]\{1,\}/[^/]\{1,\}\)/refs/tags/|\1/|' \
-e 's|^https://raw\.githubusercontent\.com/\([^/]\{1,\}\)/\([^/]\{1,\}\)/\([^/]\{1,\}\)/\(.\{1,\}\)$|repos/\1/\2/contents/\4?ref=\3|')"
if [ "$api_path" = "$schemafile" ]; then
echo "::error::Could not parse schema URL: $schemafile"
exit 1
fi
gh api -H "Accept: application/vnd.github.raw" "$api_path" > "$RUNNER_TEMP/schema.json"
schemafile="$RUNNER_TEMP/schema.json"
;;
esac

# renovate: datasource=pypi depName=check-jsonschema
CHECK_JSONSCHEMA_VERSION="0.37.0"
pip install --quiet "check-jsonschema==$CHECK_JSONSCHEMA_VERSION"
check-jsonschema --schemafile "$schema_url" "$CONFIG_FILE"
uvx "check-jsonschema@$CHECK_JSONSCHEMA_VERSION" --schemafile "$schemafile" "$CONFIG_FILE"

- name: Build config
id: build
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