From cfc5fe29bd7faaa2f04a3cd7de2acb466ad104ec Mon Sep 17 00:00:00 2001
From: Martin Hutchinson <mhutchinson@gmail.com>
Date: Mon, 9 Dec 2024 16:55:02 +0000
Subject: [PATCH] Set up benchmark action (#405)

Towards #338.
---
 .github/workflows/benchmark-go.yml | 36 ++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100644 .github/workflows/benchmark-go.yml

diff --git a/.github/workflows/benchmark-go.yml b/.github/workflows/benchmark-go.yml
new file mode 100644
index 00000000..b07517c8
--- /dev/null
+++ b/.github/workflows/benchmark-go.yml
@@ -0,0 +1,36 @@
+name: Benchmark Go
+
+on:
+  push:
+    branches:
+      - main
+
+permissions:
+  # deployments permission to deploy GitHub pages website
+  deployments: write
+  # contents permission to update benchmark contents in gh-pages branch
+  contents: write
+  # allow posting comments to pull request
+  pull-requests: write
+
+jobs:
+  benchmark:
+    name: Performance regression check
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-go@v4
+        with:
+          go-version-file: go.mod
+      - name: Run benchmark
+        run: set -o pipefail; go test ./... -benchmem -run=^$ -bench . | tee output.txt
+      - name: Store benchmark result
+        uses: benchmark-action/github-action-benchmark@v1.20.4
+        with:
+          tool: 'go'
+          output-file-path: output.txt
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          auto-push: true
+          alert-threshold: "150%"
+          comment-on-alert: true
+          fail-on-alert: true