feat: enable hermetic library generation #8

	# Copyright 2024 Google LLC
	#
	# Licensed under the Apache License, Version 2.0 (the "License");
	# you may not use this file except in compliance with the License.
	# You may obtain a copy of the License at
	#
	# http://www.apache.org/licenses/LICENSE-2.0
	#
	# Unless required by applicable law or agreed to in writing, software
	# distributed under the License is distributed on an "AS IS" BASIS,
	# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	# See the License for the specific language governing permissions and
	# limitations under the License.
	# GitHub action job to test core java library features on
	# downstream client libraries before they are released.
	name: Hermetic library generation upon generation config change through pull requests
	on:
	pull_request:

	jobs:
	library_generation:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	with:
	fetch-depth: 0
	token: ${{ secrets.CLOUD_JAVA_BOT_TOKEN }}
	- name: Generate changed libraries
	shell: bash
	run: \|
	set -x
	[ -z "$(git config user.email)" ] && git config --global user.email "[email protected]"
	[ -z "$(git config user.name)" ] && git config --global user.name "cloud-java-bot"
	bash .github/scripts/hermetic_library_generation.sh \
	--target_branch ${{ github.base_ref }} \
	--current_branch ${{ github.head_ref }}
	env:
	GH_TOKEN: ${{ secrets.CLOUD_JAVA_BOT_TOKEN }}

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