chore: add go pre-commit checks (#7056)

adapted from https://github.com/Bahjat/pre-commit-golang

.pre-commit-config.yaml

@@ -49,6 +49,28 @@ repos:
         entry: ./pre-commit/check.py
         require_serial: true
         language: python
+      # golang hooks based on https://github.com/Bahjat/pre-commit-golang
+      - id: go-fmt-import
+        name: "go import/fmt"
+        entry: ./pre-commit/run-go-fmt-import.sh
+        files: '\.go$'
+        language: "script"
+        description: "Runs `goimport,gofmt`, requires golang"
+        exclude: ^(proto/pkg)
+      - id: gofumpt
+        name: "gofumpt"
+        entry: ./pre-commit/run-go-gofumpt.sh
+        files: '\.go$'
+        language: "script"
+        description: "Runs `gofumpt`, requires github.com/mvdan/gofumpt"
+        exclude: ^(proto/pkg)
+      - id: golangci-lint
+        name: "go golangci-lint"
+        entry: ./pre-commit/run-golangci-lint.sh
+        files: '\.go$'
+        language: "script"
+        description: "Runs `golangci-lint`, install https://github.com/golangci/golangci-lint"
+        exclude: ^(proto/pkg)
 
   - repo: https://github.com/adrienverge/yamllint.git
     rev: v1.28.0

pre-commit/run-go-fmt-import.sh

@@ -0,0 +1,8 @@
+#!/bin/sh
+
+LIST_OF_FILES=$(goimports -l -w "$@")
+# print a list of affected files if any
+echo "$LIST_OF_FILES"
+if [ -n "$LIST_OF_FILES" ]; then
+    exit 1
+fi

pre-commit/run-go-gofumpt.sh

@@ -0,0 +1,8 @@
+#!/bin/sh
+
+LIST_OF_FILES=$(gofumpt -l -w "$@")
+# print a list of affected files if any
+echo "$LIST_OF_FILES"
+if [ -n "$LIST_OF_FILES" ]; then
+    exit 1
+fi

pre-commit/run-golangci-lint.sh

@@ -0,0 +1,16 @@
+#!/bin/sh
+
+CONFIG_FILE="$1"
+
+if ! command -v golangci-lint /dev/null 2>&1; then
+    echo "golangci-lint could not be found"
+    exit
+fi
+
+ERRS=$(golangci-lint run --new-from-rev="$(git rev-parse HEAD)" "$CONFIG_FILE")
+
+if [ -n "${ERRS}" ]; then
+    echo "${ERRS}"
+    exit 1
+fi
+exit 0