diff --git a/Gopkg.lock b/Gopkg.lock
index 10dbae69..11ca84e3 100644
--- a/Gopkg.lock
+++ b/Gopkg.lock
@@ -874,6 +874,7 @@
     "github.com/operator-framework/operator-sdk/version",
     "github.com/stretchr/testify/assert",
     "k8s.io/api/core/v1",
+    "k8s.io/api/rbac/v1",
     "k8s.io/apimachinery/pkg/api/errors",
     "k8s.io/apimachinery/pkg/api/resource",
     "k8s.io/apimachinery/pkg/apis/meta/v1",
@@ -885,6 +886,7 @@
     "k8s.io/apimachinery/pkg/util/wait",
     "k8s.io/client-go/kubernetes/scheme",
     "k8s.io/client-go/plugin/pkg/client/auth/gcp",
+    "k8s.io/client-go/util/workqueue",
     "k8s.io/code-generator/cmd/client-gen",
     "k8s.io/code-generator/cmd/conversion-gen",
     "k8s.io/code-generator/cmd/deepcopy-gen",
@@ -898,6 +900,7 @@
     "sigs.k8s.io/controller-runtime/pkg/client/fake",
     "sigs.k8s.io/controller-runtime/pkg/controller",
     "sigs.k8s.io/controller-runtime/pkg/controller/controllerutil",
+    "sigs.k8s.io/controller-runtime/pkg/event",
     "sigs.k8s.io/controller-runtime/pkg/handler",
     "sigs.k8s.io/controller-runtime/pkg/manager",
     "sigs.k8s.io/controller-runtime/pkg/reconcile",
diff --git a/README.md b/README.md
index 2f38c0f0..2e92efe7 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,8 @@
 # Jenkins Operator
 
+[![Build Status](https://travis-ci.org/VirtusLab/jenkins-operator.svg?branch=master)](https://travis-ci.org/VirtusLab/jenkins-operator)
+[![Go Report Card](https://goreportcard.com/badge/github.com/VirtusLab/jenkins-operator "Go Report Card")](https://goreportcard.com/report/github.com/VirtusLab/jenkins-operator)
+
 ## What's Jenkins Operator?
 
 Jenkins operator it's a Kubernetes native operator which fully manages Jenkins on Kubernetes.
diff --git a/pkg/controller/jenkins/configuration/base/reconcile.go b/pkg/controller/jenkins/configuration/base/reconcile.go
index db677eb6..a056be90 100644
--- a/pkg/controller/jenkins/configuration/base/reconcile.go
+++ b/pkg/controller/jenkins/configuration/base/reconcile.go
@@ -437,7 +437,7 @@ func (r *ReconcileJenkinsBaseConfiguration) baseConfiguration(jenkinsClient jenk
 	hash := sha256.New()
 
 	var keys []string
-	for key, _ := range configuration.Data {
+	for key := range configuration.Data {
 		keys = append(keys, key)
 	}
 	sort.Strings(keys)
diff --git a/pkg/controller/jenkins/configuration/base/resources/pod.go b/pkg/controller/jenkins/configuration/base/resources/pod.go
index ffbfe17d..57ef94f0 100644
--- a/pkg/controller/jenkins/configuration/base/resources/pod.go
+++ b/pkg/controller/jenkins/configuration/base/resources/pod.go
@@ -65,7 +65,7 @@ func NewJenkinsMasterPod(objectMeta metav1.ObjectMeta, jenkins *virtuslabv1alpha
 		ObjectMeta: objectMeta,
 		Spec: corev1.PodSpec{
 			ServiceAccountName: objectMeta.Name,
-			RestartPolicy: corev1.RestartPolicyNever,
+			RestartPolicy:      corev1.RestartPolicyNever,
 			SecurityContext: &corev1.PodSecurityContext{
 				RunAsUser:  &runAsUser,
 				RunAsGroup: &runAsUser,
diff --git a/pkg/controller/jenkins/configuration/base/resources/rbac.go b/pkg/controller/jenkins/configuration/base/resources/rbac.go
index 845be317..0944ab30 100644
--- a/pkg/controller/jenkins/configuration/base/resources/rbac.go
+++ b/pkg/controller/jenkins/configuration/base/resources/rbac.go
@@ -15,6 +15,7 @@ const (
 	updateVerb = "update"
 )
 
+// NewRole returns rbac role for jenkins master
 func NewRole(meta metav1.ObjectMeta) *v1.Role {
 	return &v1.Role{
 		TypeMeta: metav1.TypeMeta{
@@ -48,6 +49,7 @@ func NewRole(meta metav1.ObjectMeta) *v1.Role {
 	}
 }
 
+// NewRoleBinding returns rbac role binding for jenkins master
 func NewRoleBinding(meta metav1.ObjectMeta) *v1.RoleBinding {
 	return &v1.RoleBinding{
 		TypeMeta: metav1.TypeMeta{
diff --git a/pkg/controller/jenkins/configuration/base/resources/service_account.go b/pkg/controller/jenkins/configuration/base/resources/service_account.go
index e84e3f52..5fc45c19 100644
--- a/pkg/controller/jenkins/configuration/base/resources/service_account.go
+++ b/pkg/controller/jenkins/configuration/base/resources/service_account.go
@@ -5,6 +5,7 @@ import (
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 )
 
+// NewServiceAccount return kubernetes service account
 func NewServiceAccount(meta metav1.ObjectMeta) *v1.ServiceAccount {
 	return &v1.ServiceAccount{
 		TypeMeta: metav1.TypeMeta{
diff --git a/pkg/controller/jenkins/jobs/jobs.go b/pkg/controller/jenkins/jobs/jobs.go
index 9ea716cb..cb01f6ce 100644
--- a/pkg/controller/jenkins/jobs/jobs.go
+++ b/pkg/controller/jenkins/jobs/jobs.go
@@ -219,7 +219,7 @@ func (jobs *Jobs) ensureExpiredBuild(build virtuslabv1alpha1.Build, jenkins *vir
 }
 
 func (jobs *Jobs) removeBuildFromStatus(build virtuslabv1alpha1.Build, jenkins *virtuslabv1alpha1.Jenkins) error {
-	builds := make([]virtuslabv1alpha1.Build, len(jenkins.Status.Builds), len(jenkins.Status.Builds))
+	builds := make([]virtuslabv1alpha1.Build, len(jenkins.Status.Builds))
 	for _, existingBuild := range jenkins.Status.Builds {
 		if existingBuild.JobName != build.JobName && existingBuild.Hash != build.Hash {
 			builds = append(builds, existingBuild)
diff --git a/pkg/controller/jenkins/plugin/plugin.go b/pkg/controller/jenkins/plugin/plugin.go
index 5d232644..ea17197c 100644
--- a/pkg/controller/jenkins/plugin/plugin.go
+++ b/pkg/controller/jenkins/plugin/plugin.go
@@ -46,22 +46,20 @@ func VerifyDependencies(values ...map[string][]Plugin) bool {
 	valid := true
 
 	for _, value := range values {
-		if value != nil {
-			for rootPluginNameAndVersion, plugins := range value {
-				if rootPlugin, err := New(rootPluginNameAndVersion); err != nil {
-					valid = false
-				} else {
-					allPlugins[rootPlugin.Name] = append(allPlugins[rootPlugin.Name], Plugin{
-						Name:                     rootPlugin.Name,
-						Version:                  rootPlugin.Version,
-						rootPluginNameAndVersion: rootPluginNameAndVersion})
-				}
-				for _, plugin := range plugins {
-					allPlugins[plugin.Name] = append(allPlugins[plugin.Name], Plugin{
-						Name:                     plugin.Name,
-						Version:                  plugin.Version,
-						rootPluginNameAndVersion: rootPluginNameAndVersion})
-				}
+		for rootPluginNameAndVersion, plugins := range value {
+			if rootPlugin, err := New(rootPluginNameAndVersion); err != nil {
+				valid = false
+			} else {
+				allPlugins[rootPlugin.Name] = append(allPlugins[rootPlugin.Name], Plugin{
+					Name:                     rootPlugin.Name,
+					Version:                  rootPlugin.Version,
+					rootPluginNameAndVersion: rootPluginNameAndVersion})
+			}
+			for _, plugin := range plugins {
+				allPlugins[plugin.Name] = append(allPlugins[plugin.Name], Plugin{
+					Name:                     plugin.Name,
+					Version:                  plugin.Version,
+					rootPluginNameAndVersion: rootPluginNameAndVersion})
 			}
 		}
 	}
diff --git a/pkg/log/log.go b/pkg/log/log.go
index 0947ca4b..3f16e90e 100644
--- a/pkg/log/log.go
+++ b/pkg/log/log.go
@@ -1,13 +1,12 @@
 package log
 
 import (
-	"github.com/go-logr/logr"
 	"sigs.k8s.io/controller-runtime/pkg/runtime/log"
 	logf "sigs.k8s.io/controller-runtime/pkg/runtime/log"
 )
 
 // Log represents global logger
-var Log logr.Logger = log.Log.WithName("controller-jenkins")
+var Log = log.Log.WithName("controller-jenkins")
 
 const (
 	// VWarn defines warning log level