From 47853d3ab1f51be283f150667066de9de0d24f0f Mon Sep 17 00:00:00 2001
From: Jan Schlicht <jan@d2iq.com>
Date: Fri, 21 Feb 2020 10:04:38 +0100
Subject: [PATCH] Add a pre-commit hook to check for signed-off commits (#1168)

Signed-off-by: Jan Schlicht <jan@d2iq.com>
---
 .pre-commit-config.yaml         | 18 ++++++++++++++++--
 hack/check-commit-signed-off.sh | 14 ++++++++++++++
 2 files changed, 30 insertions(+), 2 deletions(-)
 create mode 100755 hack/check-commit-signed-off.sh

diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 1ef7baa5d..20e165026 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,5 +1,19 @@
+# Git hooks for KUDO. Install with
+# pre-commit install -t pre-commit -t commit-msg
 repos:
-  - repo: git://github.com/golangci/golangci-lint
-    rev: v1.22.0
+  - repo: local
     hooks:
       - id: golangci-lint
+        name: golangci-lint
+        description: Check that source code is linted
+        entry: make lint
+        language: system
+        stages: [commit]
+  - repo: local
+    hooks:
+      - id: signed-off-commits
+        name: signed-off-commits
+        description: Check that commit messages include a 'Signed-off-by' line
+        entry: ./hack/check-commit-signed-off.sh
+        language: script
+        stages: [commit-msg]
diff --git a/hack/check-commit-signed-off.sh b/hack/check-commit-signed-off.sh
new file mode 100755
index 000000000..f48a6965c
--- /dev/null
+++ b/hack/check-commit-signed-off.sh
@@ -0,0 +1,14 @@
+#!/usr/bin/env bash
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+file="$1"
+
+signedoff_regex='^Signed-off-by: '
+
+if [ "$(grep -c "$signedoff_regex" "$file")" != "1" ]; then
+	printf >&2 "Signed-off-by line is missing.\n"
+	exit 1
+fi