v2-ci

[DO NOT MERGE] feat: reduce allocs & improve throughput #1286

	name: v2-ci
	on:
	pull_request:
	branches:
	- master
	paths:
	- 'v2/**'
	- '.github/workflows/v2.yml'
	- '.github/workflows/pr-title.yml'
	- '.github/workflows/release.yml'
	- 'commitlint.config.js'
	push:
	branches:
	- master
	paths:
	- 'v2/**'
	- '.github/workflows/v2.yml'
	- '.github/workflows/pr-title.yml'
	- '.github/workflows/release.yml'
	- 'commitlint.config.js'
	jobs:
	test:
	name: Build and test (go ${{ matrix.go }} / ${{ matrix.os }})
	runs-on: ${{ matrix.os }}
	strategy:
	matrix:
	go: [ '1.21' ]
	os: [ubuntu-latest, windows-latest]
	steps:
	- name: Set git to use LF
	run: \|
	git config --global core.autocrlf false
	git config --global core.eol lf
	- name: Check out code into the Go module directory
	uses: actions/checkout@v3
	- name: Set up Go ${{ matrix.go }}
	uses: actions/setup-go@v4
	with:
	go-version: ^${{ matrix.go }}
	id: go
	- name: CI
	working-directory: v2
	run: make ci
	- name: Run tests under race detector
	working-directory: v2
	if: runner.os != 'Windows' # These are very slow on Windows, skip them
	run: make test-race

	lint:
	name: Linters
	runs-on: ubuntu-latest
	steps:
	- name: Check out code into the Go module directory
	uses: actions/checkout@v3
	- name: Set up Go 1.21
	uses: actions/setup-go@v4
	with:
	go-version: 1.21
	- name: Run linters
	uses: golangci/golangci-lint-action@v3
	with:
	working-directory: v2
	version: v1.55.2
	args: --timeout=3m
	ci:
	name: CI Success
	if: ${{ always() }}
	runs-on: ubuntu-latest
	needs: [test, lint]
	steps:
	- run: exit 1
	if: >-
	${{
	contains(needs.*.result, 'failure')
	\|\| contains(needs.*.result, 'cancelled')
	}}

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