removing go.sum from github workflow and adding unused pkg check (#1698)

Signed-off-by: rajdas98 <mail.rajdas@gmail.com>

.github/workflows/build.yaml

@@ -43,6 +43,10 @@ jobs:
       - name: golangci-lint
         uses: reviewdog/action-golangci-lint@v1
 
+      - name: Checking unused pkgs using go mod tidy
+        run: |
+          make unused-package-check
+
   build-init-kyverno:
     runs-on: ubuntu-latest
     needs: pre-checks

Makefile

@@ -20,6 +20,16 @@ LD_FLAGS="-s -w -X $(PACKAGE)/pkg/version.BuildVersion=$(GIT_VERSION) -X $(PACKA
 # KYVERNO
 ##################################
 
+.PHONY: unused-package-check
+unused-package-check:
+	@echo "------------------"
+	@echo "--> Check unused packages for the all kyverno components"
+	@echo "------------------"
+	@tidy=$$(go mod tidy); \
+	if [ -n "$${tidy}" ]; then \
+		echo "go mod tidy checking failed!"; echo "$${tidy}"; echo; \
+	fi
+
 KYVERNO_PATH:= cmd/kyverno
 build: kyverno
 PWD := $(CURDIR)

go.mod

@@ -7,19 +7,15 @@ require (
 	github.com/cornelk/hashmap v1.0.1
 	github.com/evanphx/json-patch/v5 v5.2.0
 	github.com/fatih/color v1.9.0
-	github.com/fsnotify/fsnotify v1.4.9 // indirect
 	github.com/gardener/controller-manager-library v0.2.0
 	github.com/ghodss/yaml v1.0.1-0.20190212211648-25d852aebe32
 	github.com/go-git/go-billy/v5 v5.0.0
 	github.com/go-git/go-git/v5 v5.2.0
 	github.com/go-logr/logr v0.3.0
-	github.com/golang/groupcache v0.0.0-20200121045136-8c9f03a8e57e // indirect
 	github.com/googleapis/gnostic v0.5.4
-	github.com/hashicorp/golang-lru v0.5.4 // indirect
 	github.com/jmespath/go-jmespath v0.0.0-20180206201540-c2b33e8439af
 	github.com/julienschmidt/httprouter v1.3.0
 	github.com/kataras/tablewriter v0.0.0-20180708051242-e063d29b7c23
-	github.com/kr/pretty v0.2.0 // indirect
 	github.com/lensesio/tableprinter v0.0.0-20201125135848-89e81fc956e7
 	github.com/mattbaird/jsonpatch v0.0.0-20171005235357-81af80346b1a
 	github.com/mattn/go-isatty v0.0.12 // indirect
@@ -32,8 +28,6 @@ require (
 	github.com/sirupsen/logrus v1.6.0 // indirect
 	github.com/spf13/cobra v1.1.1
 	github.com/stretchr/testify v1.6.1
-	golang.org/x/oauth2 v0.0.0-20200107190931-bf48bf16ab8d // indirect
-	golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 // indirect
 	gopkg.in/yaml.v2 v2.3.0
 	gopkg.in/yaml.v3 v3.0.0-20200615113413-eeeca48fe776
 	gotest.tools v2.2.0+incompatible