Merge pull request #4773 from IntersectMBO/lehins/drep-undelegation #1245

	name: Ledger Benchmarks
	on:
	push:
	branches:
	- master
	- nc/bench-tx

	permissions:
	contents: write
	deployments: write

	jobs:
	benchmark:
	name: cardano-ledger benchmarks
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	- uses: cachix/install-nix-action@v15
	with:
	nix_path: nixpkgs=channel:nixos-unstable
	extra_nix_config: \|
	trusted-public-keys = hydra.iohk.io:f/Ea+s+dFdN+3Y/G+FDgSq+a5NEWhJGzdjvKNGv0/EQ= cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY=
	substituters = https://cache.iog.io https://cache.nixos.org/
	- name: Build benchmarks
	run: nix build .#cardano-ledger-test:bench:bench
	- name: Run benchmark
	run: \|
	cd libs/cardano-ledger-test
	../../result/bin/bench "applyTxBenchmarks" --json bench.json
	- name: Transform results
	run: \|
	nix-env -i jq -f '<nixpkgs>'
	jq -f .github/tools/extract_criterion.jq < libs/cardano-ledger-test/bench.json > output.json
	- name: Store benchmark result
	uses: benchmark-action/github-action-benchmark@v1
	with:
	name: Haskell Benchmark
	tool: 'customSmallerIsBetter'
	output-file-path: output.json
	github-token: ${{ secrets.GITHUB_TOKEN }}
	auto-push: true
	# Show alert with commit comment on detecting possible performance regression
	alert-threshold: '200%'
	comment-on-alert: true
	fail-on-alert: true
	alert-comment-cc-users: '@nc6'

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