nixpkgs/ci/request-reviews/request-reviews.sh
Lin Jian f4c6e1174c
ci/request-reviews: fix headRef to point to the PR head
Previously, headRef points to the master branch of Nixpkgs, which
basically means no code owner review will be requested.

The problem can be verified using the following command.

$ DRY_MODE=1 ./ci/request-reviews/request-reviews.sh NixOS/nixpkgs 347973 ci/OWNERS
[...]
This PR touches 0 files
Requesting reviews from: {
  "reviewers": []
}
[...]

Additionally, the comment about conflicts is removed thanks to the
unambiguous way of specifying ref.
2024-10-12 06:10:17 +08:00

96 lines
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#!/usr/bin/env bash
# Requests reviews for a PR after verifying that the base branch is correct
set -euo pipefail
tmp=$(mktemp -d)
trap 'rm -rf "$tmp"' exit
SCRIPT_DIR=$(dirname "$0")
log() {
echo "$@" >&2
}
effect() {
if [[ -n "${DRY_MODE:-}" ]]; then
log "Skipping in dry mode:" "${@@Q}"
else
"$@"
fi
}
if (( $# < 3 )); then
log "Usage: $0 GITHUB_REPO PR_NUMBER OWNERS_FILE"
exit 1
fi
baseRepo=$1
prNumber=$2
ownersFile=$3
log "Fetching PR info"
prInfo=$(gh api \
-H "Accept: application/vnd.github+json" \
-H "X-GitHub-Api-Version: 2022-11-28" \
"/repos/$baseRepo/pulls/$prNumber")
baseBranch=$(jq -r .base.ref <<< "$prInfo")
log "Base branch: $baseBranch"
prRepo=$(jq -r .head.repo.full_name <<< "$prInfo")
log "PR repo: $prRepo"
prBranch=$(jq -r .head.ref <<< "$prInfo")
log "PR branch: $prBranch"
prAuthor=$(jq -r .user.login <<< "$prInfo")
log "PR author: $prAuthor"
extraArgs=()
if pwdRepo=$(git rev-parse --show-toplevel 2>/dev/null); then
# Speedup for local runs
extraArgs+=(--reference-if-able "$pwdRepo")
fi
log "Fetching Nixpkgs commit history"
# We only need the commit history, not the contents, so we can do a tree-less clone using tree:0
# https://github.blog/open-source/git/get-up-to-speed-with-partial-clone-and-shallow-clone/#user-content-quick-summary
git clone --bare --filter=tree:0 --no-tags --origin upstream "${extraArgs[@]}" https://github.com/"$baseRepo".git "$tmp"/nixpkgs.git
log "Fetching the PR commit history"
# Fetch the PR
git -C "$tmp/nixpkgs.git" remote add fork https://github.com/"$prRepo".git
# This remote config is the same as --filter=tree:0 when cloning
git -C "$tmp/nixpkgs.git" config remote.fork.partialclonefilter tree:0
git -C "$tmp/nixpkgs.git" config remote.fork.promisor true
git -C "$tmp/nixpkgs.git" fetch --no-tags fork "$prBranch"
headRef=$(git -C "$tmp/nixpkgs.git" rev-parse refs/remotes/fork/"$prBranch")
log "Checking correctness of the base branch"
if ! "$SCRIPT_DIR"/verify-base-branch.sh "$tmp/nixpkgs.git" "$headRef" "$baseRepo" "$baseBranch" "$prRepo" "$prBranch" | tee "$tmp/invalid-base-error" >&2; then
log "Posting error as comment"
if ! response=$(effect gh api \
--method POST \
-H "Accept: application/vnd.github+json" \
-H "X-GitHub-Api-Version: 2022-11-28" \
"/repos/$baseRepo/issues/$prNumber/comments" \
-F "body=@$tmp/invalid-base-error"); then
log "Failed to post the comment: $response"
fi
exit 1
fi
log "Getting code owners to request reviews from"
"$SCRIPT_DIR"/get-reviewers.sh "$tmp/nixpkgs.git" "$ownersFile" "$baseRepo" "$baseBranch" "$headRef" "$prNumber" "$prAuthor" > "$tmp/reviewers.json"
log "Requesting reviews from: $(<"$tmp/reviewers.json")"
if ! response=$(effect gh api \
--method POST \
-H "Accept: application/vnd.github+json" \
-H "X-GitHub-Api-Version: 2022-11-28" \
"/repos/$baseRepo/pulls/$prNumber/requested_reviewers" \
--input "$tmp/reviewers.json"); then
log "Failed to request reviews: $response"
exit 1
fi
log "Successfully requested reviews"