Track Benchmarks with Bencher #418

	name: Track Benchmarks with Bencher

	on:
	workflow_run:
	workflows: [benchmark pull requests]
	types: [completed]

	jobs:
	track_fork_pr_branch:
	name: track pr benchmarks
	if: ${{ github.event.workflow_run.conclusion == 'success' }}
	runs-on: ubuntu-latest
	env:
	BENCHMARK_RESULTS: criterion-output
	PR_EVENT: event.json
	steps:
	- name: Download Benchmark Results
	uses: dawidd6/action-download-artifact@v7
	with:
	name: ${{ env.BENCHMARK_RESULTS }}
	run_id: ${{ github.event.workflow_run.id }}
	- name: Download PR Event
	uses: dawidd6/action-download-artifact@v7
	with:
	name: ${{ env.PR_EVENT }}
	run_id: ${{ github.event.workflow_run.id }}
	- name: Export PR Event Data
	uses: actions/github-script@v7
	with:
	script: \|
	let fs = require('fs');
	let prEvent = JSON.parse(fs.readFileSync(process.env.PR_EVENT, {encoding: 'utf8'}));
	core.exportVariable("PR_HEAD", prEvent.pull_request.head.ref);
	core.exportVariable("PR_BASE", prEvent.pull_request.base.ref);
	core.exportVariable("PR_BASE_SHA", prEvent.pull_request.base.sha);
	core.exportVariable("PR_NUMBER", prEvent.number);
	- uses: bencherdev/bencher@main
	- name: Track Benchmarks with Bencher
	run: \|
	bencher run \
	--project nickel \
	--token '${{ secrets.BENCHER_API_TOKEN }}' \
	--branch "$PR_HEAD" \
	--start-point "$PR_BASE" \
	--start-point-hash "$PR_BASE_SHA" \
	--start-point-clone-thresholds \
	--start-point-reset \
	--testbed ubuntu-latest \
	--adapter rust_criterion \
	--err \
	--github-actions '${{ secrets.GITHUB_TOKEN }}' \
	--ci-number "$PR_NUMBER" \
	--file "$BENCHMARK_RESULTS.txt"

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