#43 Add support for JENKINS_OPTS, fix the --prefix bug

pkg/controller/jenkins/configuration/base/reconcile.go

@@ -127,6 +127,29 @@ func (r *ReconcileJenkinsBaseConfiguration) Reconcile() (reconcile.Result, jenki
 	return result, jenkinsClient, err
 }
 
+// GetJenkinsOpts put container JENKINS_OPTS env parameters in map and returns it
+func GetJenkinsOpts(jenkins *v1alpha2.Jenkins) map[string]string {
+	envs := jenkins.Spec.Master.Containers[0].Env
+	jenkinsOpts := make(map[string]string)
+
+	for k, v := range envs {
+		if v.Name == "JENKINS_OPTS" {
+			jenkinsOptsEnv := envs[k]
+			jenkinsOptsWithDashes := jenkinsOptsEnv.Value
+			jenkinsOptsWithDashes = strings.ReplaceAll(jenkinsOptsWithDashes, "--", "") // Remove dashes
+			jenkinsOptsWithEqOperators := strings.Split(jenkinsOptsWithDashes, " ")
+
+			for _, vx := range jenkinsOptsWithEqOperators {
+				opt := strings.Split(vx, "=")
+				jenkinsOpts[opt[0]] = opt[1]
+			}
+
+			return jenkinsOpts
+		}
+	}
+	return nil
+}
+
 func (r *ReconcileJenkinsBaseConfiguration) ensureResourcesRequiredForJenkinsPod(metaObject metav1.ObjectMeta) error {
 	if err := r.createOperatorCredentialsSecret(metaObject); err != nil {
 		return err
@@ -748,6 +771,11 @@ func (r *ReconcileJenkinsBaseConfiguration) waitForJenkins(meta metav1.ObjectMet
 func (r *ReconcileJenkinsBaseConfiguration) ensureJenkinsClient(meta metav1.ObjectMeta) (jenkinsclient.Jenkins, error) {
 	jenkinsURL, err := jenkinsclient.BuildJenkinsAPIUrl(
 		r.jenkins.ObjectMeta.Namespace, resources.GetJenkinsHTTPServiceName(r.jenkins), r.jenkins.Spec.Service.Port, r.local, r.minikube)
+
+	if prefix, ok := GetJenkinsOpts(r.jenkins)["prefix"]; ok {
+		jenkinsURL = jenkinsURL + prefix
+	}
+
 	if err != nil {
 		return nil, err
 	}

pkg/controller/jenkins/configuration/base/reconcile_test.go

@@ -14,6 +14,44 @@ import (
 	corev1 "k8s.io/api/core/v1"
 )
 
+func TestGetJenkinsOpts(t *testing.T) {
+	envs := []corev1.EnvVar{
+		{Name: "JENKINS_OPTS", Value: "--prefix=/jenkins --httpPort=8080"},
+	}
+
+	jenkins := &v1alpha2.Jenkins{
+		Spec: v1alpha2.JenkinsSpec{
+			Master: v1alpha2.JenkinsMaster{
+				Containers: []v1alpha2.Container{
+					{
+						Env: envs,
+					},
+				},
+			},
+		},
+	}
+
+	opts := GetJenkinsOpts(jenkins)
+
+	t.Run("equal env vars", func(t *testing.T) {
+		assert.Equal(t, opts["prefix"], "/jenkins")
+		assert.Equal(t, opts["httpPort"], "8080")
+	})
+
+	t.Run("not equal env vars", func(t *testing.T) {
+		assert.NotEqual(t, opts["prefix"], "/jenkins_not_equal")
+		assert.NotEqual(t, opts["httpPort"], "80808")
+	})
+
+	t.Run("should exists", func(t *testing.T) {
+		assert.Contains(t, opts, "httpPort")
+	})
+
+	t.Run("should exists", func(t *testing.T) {
+		assert.NotContains(t, opts, "should_not_exists")
+	})
+}
+
 func TestCompareContainerVolumeMounts(t *testing.T) {
 	t.Run("happy with service account", func(t *testing.T) {
 		expectedContainer := corev1.Container{

pkg/controller/jenkins/jenkins_controller.go

@@ -3,8 +3,7 @@ package jenkins
 import (
 	"context"
 	"fmt"
-	"reflect"
+	"github.com/go-logr/logr"
-
 	"github.com/jenkinsci/kubernetes-operator/pkg/apis/jenkins/v1alpha2"
 	jenkinsclient "github.com/jenkinsci/kubernetes-operator/pkg/controller/jenkins/client"
 	"github.com/jenkinsci/kubernetes-operator/pkg/controller/jenkins/configuration/base"
@@ -16,8 +15,6 @@ import (
 	"github.com/jenkinsci/kubernetes-operator/pkg/event"
 	"github.com/jenkinsci/kubernetes-operator/pkg/log"
 	"github.com/jenkinsci/kubernetes-operator/version"
-
-	"github.com/go-logr/logr"
 	"github.com/pkg/errors"
 	corev1 "k8s.io/api/core/v1"
 	apierrors "k8s.io/apimachinery/pkg/api/errors"
@@ -27,6 +24,7 @@ import (
 	"k8s.io/apimachinery/pkg/util/intstr"
 	"k8s.io/client-go/kubernetes"
 	"k8s.io/client-go/rest"
+	"reflect"
 	"sigs.k8s.io/controller-runtime/pkg/client"
 	"sigs.k8s.io/controller-runtime/pkg/controller"
 	"sigs.k8s.io/controller-runtime/pkg/handler"