add license header check v2

[YanxuanLiu]

fix #37

Add v2 for new branch strategy. Allow to check main branch

test run: https://github.com/YanxuanLiu/spark-rapids/actions/runs/15484134743/job/43595238006?pr=31

[pxLi]

LGTM, just a quick skim. Lets mark this as draft for now, we will get back to this in July to see if fulfill the latest requirement at that moment, thanks

Please also include update to the common repo directly in this change, as this one is main development based, thanks

[pxLi]

It looks like simply adding a switch to the existing action may be more efficient here as we will always need to change the ref place. So old branches can keep using it with default value, and new release/branch-* will just need to add a param for the action. Thanks

[YanxuanLiu]

After discussion offline, added a flag check_main to original action, set its default value as false to avoid any change of old branches.

Test runs:

• check_main=false: https://github.com/YanxuanLiu/spark-rapids/actions/runs/15530882376/job/43719421353?pr=31
• check_main=true: https://github.com/YanxuanLiu/spark-rapids/actions/runs/15531106802/job/43720096189?pr=31

[Copilot]

Pull Request Overview

Adds an optional flag to control whether the license header check runs on PRs targeting the main branch.

• Introduce a new check_main boolean input (default: false).
• Update the composite action script to skip or perform the check on the main branch based on check_main.

Comments suppressed due to low confidence (2)

license-header-check/action.yml:26

• The new check_main input isn't documented in the action's README or usage examples. Please update the documentation to include its purpose, default value, and usage.

check_main:

license-header-check/action.yml:45

• Consider adding or updating test cases to cover the scenario when check_main is true, ensuring that license header checks run on PRs targeting the main branch.

if [[ "${{ inputs.check_main }}" == "false" ]]; then

[Copilot]

[nitpick] The nested if blocks around check_main can be simplified into a single conditional to improve readability, for example: if [[ "${{ inputs.check_main }}" == "false" && "${{ github.event.pull_request.base.ref }}" == "main" ]]; then ... fi.

Suggested change

	if [[ "${{ inputs.check_main }}" == "false" ]]; then
	if [[ "${{ github.event.pull_request.base.ref }}" == "main" ]]; then
	echo "Skip this check for Merge to main PR."
	exit 0
	fi
	if [[ "${{ inputs.check_main }}" == "false" && "${{ github.event.pull_request.base.ref }}" == "main" ]]; then
	echo "Skip this check for Merge to main PR."
	exit 0
	fi

[pxLi]

Thanks! Please help file dummy PR of common repo to do a post-merge check~

[YanxuanLiu]

Thanks! Please help file dummy PR of common repo to do a post-merge check~

test run works as expected. https://github.com/NVIDIA/spark-rapids-common/actions/runs/15549785211/job/43778010969?pr=39