Output the good error message if plan_workflow_name is wrong

[suzuki-shunsuke]

Feature Overview

Output the good error message if plan_workflow_name is wrong.

Why is the feature needed?

Currently, if plan_workflow_name is wrong, it would fail to download plan files.

tfaction/terraform-apply/download_plan_file.sh

Lines 8 to 28 in 5200c6c

	workflow=$PLAN_WORKFLOW_NAME
	pr_head_sha=$(jq -r ".head.sha" "$CI_INFO_TEMP_DIR/pr.json")
	# https://github.com/suzuki-shunsuke/tfaction/pull/1570#issuecomment-1987382651
	# We don't use gh run list's -c option because
	# 1. this requires GitHub CLI v2.40.0 or newer
	# 2. we should check the latest workflow run
	body=$(gh run list -w "$workflow" -b "$branch" -L 1 --json headSha,databaseId --jq '.[0]')
	run_id=$(echo "$body" | jq -r ".databaseId")
	head_sha=$(echo "$body" | jq -r ".headSha")
	if [ "$head_sha" != "$pr_head_sha" ]; then
	echo "::error::workflow run's headSha ($head_sha) is different from the associated pull request's head sha ($pr_head_sha)"
	github-comment post \
	-config "${GITHUB_ACTION_PATH}/github-comment.yaml" \
	-k invalid-workflow-sha \
	-var "wf_sha:$head_sha" \
	-var "pr_sha:$pr_head_sha"
	exit 1
	fi

In this case, tfaction should output good an error message so that users can find the root cause.

Example Code

No response

Note

https://twitter.com/b0xp2/status/1767012149732549045