From 1a905ab966549bf9ce80494a36728c497dcaea9e Mon Sep 17 00:00:00 2001
From: CrazyMax <crazy-max@users.noreply.github.com>
Date: Wed, 20 Jul 2022 14:18:18 +0200
Subject: [PATCH] ci: git validation target

Signed-off-by: CrazyMax <crazy-max@users.noreply.github.com>
---
 .github/workflows/validate.yml |  7 ++++---
 Makefile                       |  5 ++++-
 docker-bake.hcl                | 15 ++++++++++++++-
 dockerfiles/git.Dockerfile     | 23 +++++++++++++++++++++++
 4 files changed, 45 insertions(+), 5 deletions(-)
 create mode 100644 dockerfiles/git.Dockerfile

diff --git a/.github/workflows/validate.yml b/.github/workflows/validate.yml
index 9a5b4dec..73e953af 100644
--- a/.github/workflows/validate.yml
+++ b/.github/workflows/validate.yml
@@ -8,8 +8,6 @@ on:
     tags:
       - 'v*'
   pull_request:
-    branches:
-      - '*'
 
 jobs:
   validate:
@@ -20,11 +18,14 @@ jobs:
         target:
           - lint
           - validate-vendor
+          - validate-git
     steps:
       -
         name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       -
         name: Run
         run: |
           make ${{ matrix.target }}
+        env:
+          COMMIT_RANGE: ${{ format('{0}..{1}', github.sha, 'HEAD') }}
diff --git a/Makefile b/Makefile
index 2f58f44f..42db005e 100644
--- a/Makefile
+++ b/Makefile
@@ -38,7 +38,7 @@ BINARIES=$(addprefix bin/,$(COMMANDS))
 TESTFLAGS ?= -v $(TESTFLAGS_RACE)
 TESTFLAGS_PARALLEL ?= 8
 
-.PHONY: all build binaries clean test test-race test-full integration coverage validate lint validate-vendor vendor mod-outdated
+.PHONY: all build binaries clean test test-race test-full integration coverage validate lint validate-git validate-vendor vendor mod-outdated
 .DEFAULT: all
 
 all: binaries
@@ -103,6 +103,9 @@ validate: ## run all validators
 lint: ## run all linters
 	docker buildx bake $@
 
+validate-git: ## validate git
+	docker buildx bake $@
+
 validate-vendor: ## validate vendor
 	docker buildx bake $@
 
diff --git a/docker-bake.hcl b/docker-bake.hcl
index 4b776fcc..db9fa1f5 100644
--- a/docker-bake.hcl
+++ b/docker-bake.hcl
@@ -3,7 +3,7 @@ group "default" {
 }
 
 group "validate" {
-  targets = ["lint", "validate-vendor"]
+  targets = ["lint", "validate-git", "validate-vendor"]
 }
 
 target "lint" {
@@ -11,6 +11,19 @@ target "lint" {
   output = ["type=cacheonly"]
 }
 
+variable "COMMIT_RANGE" {
+  default = ""
+}
+target "validate-git" {
+  dockerfile = "./dockerfiles/git.Dockerfile"
+  target = "validate"
+  args = {
+    COMMIT_RANGE = COMMIT_RANGE
+    BUILDKIT_CONTEXT_KEEP_GIT_DIR = 1
+  }
+  output = ["type=cacheonly"]
+}
+
 target "validate-vendor" {
   dockerfile = "./dockerfiles/vendor.Dockerfile"
   target = "validate"
diff --git a/dockerfiles/git.Dockerfile b/dockerfiles/git.Dockerfile
new file mode 100644
index 00000000..1d217eff
--- /dev/null
+++ b/dockerfiles/git.Dockerfile
@@ -0,0 +1,23 @@
+# syntax=docker/dockerfile:1
+
+ARG GO_VERSION=1.18
+ARG ALPINE_VERSION=3.16
+
+FROM alpine:${ALPINE_VERSION} AS base
+RUN apk add --no-cache git gpg
+
+FROM golang:${GO_VERSION}-alpine${ALPINE_VERSION} AS gitvalidation
+ARG GIT_VALIDATION_VERSION=v1.1.0
+RUN --mount=type=cache,target=/root/.cache \
+  --mount=type=cache,target=/go/pkg/mod \
+    GOBIN=/out go install "github.com/vbatts/git-validation@${GIT_VALIDATION_VERSION}"
+
+FROM base AS validate
+ARG COMMIT_RANGE
+RUN if [ -z "$COMMIT_RANGE" ]; then echo "COMMIT_RANGE required" && exit 1; fi
+ENV GIT_CHECK_EXCLUDE="./vendor"
+WORKDIR /src
+RUN --mount=type=bind,target=. \
+  --mount=type=cache,target=/root/.cache \
+  --mount=from=gitvalidation,source=/out/git-validation,target=/usr/bin/git-validation \
+    git-validation -q -range "$COMMIT_RANGE" -run short-subject,dangling-whitespace