From 80d42931cbf93be24f8ef73b2325a65b940ccfe8 Mon Sep 17 00:00:00 2001
From: Nicholas J <nicholas.a.johns5@gmail.com>
Date: Sun, 15 Oct 2017 23:47:22 -0400
Subject: [PATCH] Feature: Add check_license.sh
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There is currently no automated script to ensure all source files have
a license header, fortunately Prometheus already has a script provided by @jonboulle and I have simply
copied that script and applied it to this code base.

Example output:
```
github.com/prometheus/common on  feat-add-license-check [+]
➜ ./scripts/check_license.sh
-e license header checking failed:
-e   ./route/route.go
-e   ./route/route_test.go
```

All credit to @jonboulle for the initial script.
---
 scripts/check_license.sh | 10 ++++++++++
 1 file changed, 10 insertions(+)
 create mode 100755 scripts/check_license.sh

diff --git a/scripts/check_license.sh b/scripts/check_license.sh
new file mode 100755
index 000000000..c88d3cacb
--- /dev/null
+++ b/scripts/check_license.sh
@@ -0,0 +1,10 @@
+#!/bin/sh
+
+licRes=$(
+for file in $(find . -type f -iname '*.go' ! -path './internal/*'); do
+	head -n3 "${file}" | grep -Eq "(Copyright|generated|GENERATED)" || echo -e "  ${file}"
+done;)
+if [ -n "${licRes}" ]; then
+	echo -e "license header checking failed:\n${licRes}"
+	exit 255
+fi