This is a code-linting refactor

This refactors a large part of the codebase using the suggestions from
golangci-lint

Change-Id: I2b7735086a64e50f3d5e0b30c225870bddc70935

client/client.go

@@ -20,27 +20,28 @@ type Client struct {
 }
 
 func (c Client) Pods(namespace string) v1core.PodInterface {
-	return c.Clientset.Core().Pods(namespace)
+	return c.Clientset.CoreV1().Pods(namespace)
 }
 
 func (c Client) Jobs(namespace string) v1batch.JobInterface {
-	return c.Clientset.Batch().Jobs(namespace)
+	return c.Clientset.BatchV1().Jobs(namespace)
 }
 
 func (c Client) Endpoints(namespace string) v1core.EndpointsInterface {
-	return c.Clientset.Core().Endpoints(namespace)
+	return c.Clientset.CoreV1().Endpoints(namespace)
 }
 func (c Client) DaemonSets(namespace string) v1beta1extensions.DaemonSetInterface {
-	return c.Clientset.Extensions().DaemonSets(namespace)
+	return c.Clientset.ExtensionsV1beta1().DaemonSets(namespace)
 }
 
 func (c Client) Services(namespace string) v1core.ServiceInterface {
-	return c.Clientset.Core().Services(namespace)
+	return c.Clientset.CoreV1().Services(namespace)
 }
 
 func New(config *rest.Config) (ClientInterface, error) {
 	if config == nil {
-		config, err := rest.InClusterConfig()
+		var err error
+		config, err = rest.InClusterConfig()
 		if err != nil {
 			return nil, err
 		}

dependencies/config/config.go

@@ -80,7 +80,7 @@ func (c Config) IsResolved(entrypoint entry.EntrypointInterface) (bool, error) {
 
 }
 
-func (c Config) createAndTemplateConfig() (err error) {
+func (c Config) createAndTemplateConfig() error {
 	config, err := os.Create(c.name)
 	if err != nil {
 		return err
@@ -91,7 +91,7 @@ func (c Config) createAndTemplateConfig() (err error) {
 	if err = temp.Execute(config, c.params); err != nil {
 		return err
 	}
-	return
+	return nil
 }
 
 func getSrcConfig(prefix string, config string) (srcConfig string) {

dependencies/config/config_suite_test.go

@@ -1,10 +1,10 @@
 package config_test
 
 import (
+	"testing"
+
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
-
-	"testing"
 )
 
 func TestConfig(t *testing.T) {

dependencies/config/config_test.go

@@ -7,11 +7,11 @@ import (
 	"os"
 	"path/filepath"
 
-	"github.com/stackanetes/kubernetes-entrypoint/entrypoint"
-	"github.com/stackanetes/kubernetes-entrypoint/mocks"
-
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
+
+	"github.com/stackanetes/kubernetes-entrypoint/entrypoint"
+	"github.com/stackanetes/kubernetes-entrypoint/mocks"
 )
 
 const (
@@ -28,7 +28,6 @@ var testEntrypoint entrypoint.EntrypointInterface
 var testConfigContents string
 var testConfigPath string
 var testTemplatePath string
-var hostname string
 
 // var testClient cli.ClientInterface
 
@@ -53,17 +52,17 @@ func teardownOsEnvironment() (err error) {
 	return os.Unsetenv(interfaceName)
 }
 
-func setupConfigTemplate(templatePath string) (err error) {
+func setupConfigTemplate(templatePath string) error {
 	configContent := []byte(testConfigContents)
 	if err := os.MkdirAll(filepath.Dir(templatePath), 0755); err != nil {
 		return err
 	}
 
-	if err = ioutil.WriteFile(templatePath, configContent, 0644); err != nil {
+	if err := ioutil.WriteFile(templatePath, configContent, 0644); err != nil {
 		return err
 	}
 
-	return
+	return nil
 }
 
 func teardownConfigTemplate(templatePath string) (err error) {
@@ -111,7 +110,8 @@ var _ = Describe("Config", func() {
 
 	It("checks the format of a newly created config file", func() {
 		config, _ := NewConfig(testConfigPath, templatePrefix)
-		config.IsResolved(testEntrypoint)
+		_, err := config.IsResolved(testEntrypoint)
+		Expect(err).NotTo(HaveOccurred())
 
 		result, err := ioutil.ReadFile(fmt.Sprintf("%s/%s", testDir, testConfigName))
 		Expect(err).NotTo(HaveOccurred())
@@ -121,7 +121,7 @@ var _ = Describe("Config", func() {
 
 		expectedFile := fmt.Sprintf(testConfigContentsFormat, hostname)
 
-		readConfig := string(result[:])
+		readConfig := string(result)
 		Expect(readConfig).To(BeEquivalentTo(expectedFile))
 	})
 

dependencies/container/container.go

@@ -3,14 +3,14 @@ package container
 import (
 	"fmt"
 	"os"
-
 	"strings"
 
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+
 	entry "github.com/stackanetes/kubernetes-entrypoint/entrypoint"
 	"github.com/stackanetes/kubernetes-entrypoint/logger"
 	"github.com/stackanetes/kubernetes-entrypoint/util"
 	"github.com/stackanetes/kubernetes-entrypoint/util/env"
-	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 )
 
 const (
@@ -54,7 +54,7 @@ func (c Container) IsResolved(entrypoint entry.EntrypointInterface) (bool, error
 	}
 
 	if strings.Contains(c.name, env.Separator) {
-		return false, fmt.Errorf("Specifing namespace is not permitted")
+		return false, fmt.Errorf("Specifying namespace is not permitted")
 	}
 	containers := pod.Status.ContainerStatuses
 	for _, container := range containers {

dependencies/container/container_suite_test.go

@@ -1,10 +1,10 @@
 package container_test
 
 import (
+	"testing"
+
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
-
-	"testing"
 )
 
 func TestContainer(t *testing.T) {

dependencies/container/container_test.go

@@ -4,11 +4,11 @@ import (
 	"fmt"
 	"os"
 
-	"github.com/stackanetes/kubernetes-entrypoint/entrypoint"
-	"github.com/stackanetes/kubernetes-entrypoint/mocks"
-
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
+
+	"github.com/stackanetes/kubernetes-entrypoint/entrypoint"
+	"github.com/stackanetes/kubernetes-entrypoint/mocks"
 )
 
 const (

dependencies/daemonset/daemonset.go

@@ -4,11 +4,12 @@ import (
 	"fmt"
 	"os"
 
+	v1 "k8s.io/api/core/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+
 	entry "github.com/stackanetes/kubernetes-entrypoint/entrypoint"
 	"github.com/stackanetes/kubernetes-entrypoint/logger"
 	"github.com/stackanetes/kubernetes-entrypoint/util/env"
-	"k8s.io/api/core/v1"
-	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 )
 
 const (
@@ -24,7 +25,7 @@ type Daemonset struct {
 
 func init() {
 	daemonsetEnv := fmt.Sprintf("%sDAEMONSET", entry.DependencyPrefix)
-	if daemonsetsDeps := env.SplitEnvToDeps(daemonsetEnv); daemonsetsDeps != nil {
+	daemonsetsDeps := env.SplitEnvToDeps(daemonsetEnv)
 	for _, dep := range daemonsetsDeps {
 		daemonset, err := NewDaemonset(dep.Name, dep.Namespace)
 		if err != nil {
@@ -33,7 +34,6 @@ func init() {
 		}
 		entry.Register(daemonset)
 	}
-	}
 }
 
 func NewDaemonset(name string, namespace string) (*Daemonset, error) {
@@ -71,6 +71,7 @@ func (d Daemonset) IsResolved(entrypoint entry.EntrypointInterface) (bool, error
 	myHost := myPod.Status.HostIP
 
 	for _, pod := range daemonsetPods.Items {
+		pod := pod // pinning
 		if !isPodOnHost(&pod, myHost) {
 			continue
 		}
@@ -84,10 +85,7 @@ func (d Daemonset) IsResolved(entrypoint entry.EntrypointInterface) (bool, error
 }
 
 func isPodOnHost(pod *v1.Pod, hostIP string) bool {
-	if pod.Status.HostIP == hostIP {
+	return pod.Status.HostIP == hostIP
-		return true
-	}
-	return false
 }
 
 func isPodReady(pod v1.Pod) bool {

dependencies/daemonset/daemonset_suite_test.go

@@ -1,10 +1,10 @@
 package daemonset_test
 
 import (
+	"testing"
+
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
-
-	"testing"
 )
 
 func TestDaemonset(t *testing.T) {

dependencies/daemonset/daemonset_test.go

@@ -4,11 +4,11 @@ import (
 	"fmt"
 	"os"
 
-	"github.com/stackanetes/kubernetes-entrypoint/entrypoint"
-	"github.com/stackanetes/kubernetes-entrypoint/mocks"
-
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
+
+	"github.com/stackanetes/kubernetes-entrypoint/entrypoint"
+	"github.com/stackanetes/kubernetes-entrypoint/mocks"
 )
 
 const (
@@ -32,7 +32,8 @@ var _ = Describe("Daemonset", func() {
 		daemonset, err := NewDaemonset(mocks.SucceedingDaemonsetName, daemonsetNamespace)
 
 		Expect(daemonset).To(BeNil())
-		Expect(err.Error()).To(Equal(fmt.Sprintf(PodNameNotSetErrorFormat, mocks.SucceedingDaemonsetName, daemonsetNamespace)))
+		errMsg := fmt.Sprintf(PodNameNotSetErrorFormat, mocks.SucceedingDaemonsetName, daemonsetNamespace)
+		Expect(err.Error()).To(Equal(errMsg))
 	})
 
 	It(fmt.Sprintf("creates new daemonset with %s set and checks its name", PodNameEnvVar), func() {
@@ -126,6 +127,5 @@ var _ = Describe("Daemonset", func() {
 
 		Expect(err).NotTo(HaveOccurred())
 		Expect(isResolved).To(BeTrue())
-		err = os.Unsetenv(PodNameEnvVar)
 	})
 })

dependencies/job/job.go

@@ -3,11 +3,12 @@ package job
 import (
 	"fmt"
 
+	v1 "k8s.io/api/batch/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+
 	entry "github.com/stackanetes/kubernetes-entrypoint/entrypoint"
 	"github.com/stackanetes/kubernetes-entrypoint/logger"
 	"github.com/stackanetes/kubernetes-entrypoint/util/env"
-	v1 "k8s.io/api/batch/v1"
-	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 )
 
 const FailingStatusFormat = "Job %s is not completed yet"
@@ -78,13 +79,11 @@ func (j Job) IsResolved(entrypoint entry.EntrypointInterface) (bool, error) {
 }
 
 func (j Job) String() string {
-	var prefix string
+	prefix := "Jobs"
 	if j.name != "" {
 		prefix = fmt.Sprintf("Job %s", j.name)
 	} else if j.labels != nil {
 		prefix = fmt.Sprintf("Jobs with labels %s", j.labels)
-	} else {
-		prefix = "Jobs"
 	}
 	return fmt.Sprintf("%s in namespace %s", prefix, j.namespace)
 }

dependencies/job/job_suite_test.go

@@ -1,10 +1,10 @@
 package job_test
 
 import (
+	"testing"
+
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
-
-	"testing"
 )
 
 func TestJob(t *testing.T) {

dependencies/job/job_test.go

@@ -3,11 +3,11 @@ package job
 import (
 	"fmt"
 
-	"github.com/stackanetes/kubernetes-entrypoint/entrypoint"
-	"github.com/stackanetes/kubernetes-entrypoint/mocks"
-
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
+
+	"github.com/stackanetes/kubernetes-entrypoint/entrypoint"
+	"github.com/stackanetes/kubernetes-entrypoint/mocks"
 )
 
 const testJobName = "TEST_JOB_NAME"

dependencies/pod/pod.go

@@ -4,11 +4,12 @@ import (
 	"fmt"
 	"os"
 
+	v1 "k8s.io/api/core/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+
 	entry "github.com/stackanetes/kubernetes-entrypoint/entrypoint"
 	"github.com/stackanetes/kubernetes-entrypoint/logger"
 	"github.com/stackanetes/kubernetes-entrypoint/util/env"
-	"k8s.io/api/core/v1"
-	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 )
 
 const (
@@ -25,7 +26,7 @@ type Pod struct {
 
 func init() {
 	podEnv := fmt.Sprintf("%sPOD%s", entry.DependencyPrefix, entry.JsonSuffix)
-	if podDeps := env.SplitPodEnvToDeps(podEnv); podDeps != nil {
+	podDeps := env.SplitPodEnvToDeps(podEnv)
 	for _, dep := range podDeps {
 		pod, err := NewPod(dep.Labels, dep.Namespace, dep.RequireSameNode)
 		if err != nil {
@@ -34,7 +35,6 @@ func init() {
 		}
 		entry.Register(pod)
 	}
-	}
 }
 
 func NewPod(labels map[string]string, namespace string, requireSameNode bool) (*Pod, error) {
@@ -73,6 +73,7 @@ func (p Pod) IsResolved(entrypoint entry.EntrypointInterface) (bool, error) {
 	podCount := 0
 	for _, pod := range matchingPods {
 		podCount++
+		pod := pod // pinning
 		if p.requireSameNode && !isPodOnHost(&pod, myHost) {
 			continue
 		}
@@ -92,10 +93,7 @@ func (p Pod) IsResolved(entrypoint entry.EntrypointInterface) (bool, error) {
 }
 
 func isPodOnHost(pod *v1.Pod, hostIP string) bool {
-	if pod.Status.HostIP == hostIP {
+	return pod.Status.HostIP == hostIP
-		return true
-	}
-	return false
 }
 
 func isPodReady(pod v1.Pod) bool {

dependencies/pod/pod_suite_test.go

@@ -1,10 +1,10 @@
 package pod_test
 
 import (
+	"testing"
+
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
-
-	"testing"
 )
 
 func TestPod(t *testing.T) {

dependencies/pod/pod_test.go

@@ -4,11 +4,11 @@ import (
 	"fmt"
 	"os"
 
-	"github.com/stackanetes/kubernetes-entrypoint/entrypoint"
-	"github.com/stackanetes/kubernetes-entrypoint/mocks"
-
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
+
+	"github.com/stackanetes/kubernetes-entrypoint/entrypoint"
+	"github.com/stackanetes/kubernetes-entrypoint/mocks"
 )
 
 const (

dependencies/service/service.go

@@ -3,9 +3,10 @@ package service
 import (
 	"fmt"
 
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+
 	entry "github.com/stackanetes/kubernetes-entrypoint/entrypoint"
 	"github.com/stackanetes/kubernetes-entrypoint/util/env"
-	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 )
 
 const FailingStatusFormat = "Service %v has no endpoints"

dependencies/service/service_suite_test.go

@@ -1,10 +1,10 @@
 package service_test
 
 import (
+	"testing"
+
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
-
-	"testing"
 )
 
 func TestService(t *testing.T) {

dependencies/service/service_test.go

@@ -3,11 +3,11 @@ package service
 import (
 	"fmt"
 
-	"github.com/stackanetes/kubernetes-entrypoint/entrypoint"
-	"github.com/stackanetes/kubernetes-entrypoint/mocks"
-
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
+
+	"github.com/stackanetes/kubernetes-entrypoint/entrypoint"
+	"github.com/stackanetes/kubernetes-entrypoint/mocks"
 )
 
 const testServiceName = "TEST_SERVICE_NAME"

dependencies/socket/socket_suite_test.go

@@ -1,10 +1,10 @@
 package socket_test
 
 import (
+	"testing"
+
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
-
-	"testing"
 )
 
 func TestSocket(t *testing.T) {

dependencies/socket/socket_test.go

@@ -4,11 +4,11 @@ import (
 	"fmt"
 	"os"
 
-	"github.com/stackanetes/kubernetes-entrypoint/entrypoint"
-	"github.com/stackanetes/kubernetes-entrypoint/mocks"
-
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
+
+	"github.com/stackanetes/kubernetes-entrypoint/entrypoint"
+	"github.com/stackanetes/kubernetes-entrypoint/mocks"
 )
 
 const (

entrypoint/entrypoint.go

@@ -4,9 +4,10 @@ import (
 	"sync"
 	"time"
 
+	"k8s.io/client-go/rest"
+
 	cli "github.com/stackanetes/kubernetes-entrypoint/client"
 	"github.com/stackanetes/kubernetes-entrypoint/logger"
-	"k8s.io/client-go/rest"
 )
 
 var dependencies []Resolver // List containing all dependencies to be resolved
@@ -66,7 +67,7 @@ func (e Entrypoint) Resolve() {
 			logger.Info.Printf("Resolving %v", dep)
 			var err error
 			status := false
-			for status == false {
+			for !status {
 				if status, err = dep.IsResolved(e); err != nil {
 					logger.Warning.Printf("Resolving dependency %s failed: %v .", dep, err)
 				}

entrypoint/entrypoint_suite_test.go

@@ -1,10 +1,10 @@
 package entrypoint_test
 
 import (
+	"testing"
+
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
-
-	"testing"
 )
 
 func TestEntrypoint(t *testing.T) {

entrypoint/entrypoint_test.go

@@ -8,6 +8,7 @@ import (
 
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
+
 	cli "github.com/stackanetes/kubernetes-entrypoint/client"
 	"github.com/stackanetes/kubernetes-entrypoint/logger"
 	"github.com/stackanetes/kubernetes-entrypoint/mocks"
@@ -103,6 +104,8 @@ var _ = Describe("Entrypoint", func() {
 		time.Sleep(5 * time.Second)
 
 		stdout, _ := ioutil.ReadAll(r)
-		Expect(string(stdout)).To(Equal(fmt.Sprintf("%sResolving %v\n%sDependency %v is resolved.\n", loggerInfoText, dummy, loggerInfoText, dummy)))
+		resolvedString := fmt.Sprintf("%sResolving %v\n%sDependency %v is resolved.\n",
+			loggerInfoText, dummy, loggerInfoText, dummy)
+		Expect(string(stdout)).To(Equal(resolvedString))
 	})
 })

kubernetes-entrypoint.go

@@ -3,8 +3,6 @@ package main
 import (
 	"os"
 
-	entry "github.com/stackanetes/kubernetes-entrypoint/entrypoint"
-
 	_ "github.com/stackanetes/kubernetes-entrypoint/dependencies/config"
 	_ "github.com/stackanetes/kubernetes-entrypoint/dependencies/container"
 	_ "github.com/stackanetes/kubernetes-entrypoint/dependencies/daemonset"
@@ -12,8 +10,9 @@ import (
 	_ "github.com/stackanetes/kubernetes-entrypoint/dependencies/pod"
 	_ "github.com/stackanetes/kubernetes-entrypoint/dependencies/service"
 	_ "github.com/stackanetes/kubernetes-entrypoint/dependencies/socket"
+	entry "github.com/stackanetes/kubernetes-entrypoint/entrypoint"
 	"github.com/stackanetes/kubernetes-entrypoint/logger"
-	command "github.com/stackanetes/kubernetes-entrypoint/util/command"
+	"github.com/stackanetes/kubernetes-entrypoint/util/command"
 	"github.com/stackanetes/kubernetes-entrypoint/util/env"
 )
 

logger/logger.go

@@ -6,9 +6,9 @@ import (
 )
 
 var (
-	//"Info logger""
+	//Info logger
 	Info *log.Logger
-	//"Error logger"
+	//Error logger
 	Error *log.Logger
 	//Warning logger
 	Warning *log.Logger

mocks/client.go

@@ -1,10 +1,11 @@
 package mocks
 
 import (
-	cli "github.com/stackanetes/kubernetes-entrypoint/client"
 	v1batch "k8s.io/client-go/kubernetes/typed/batch/v1"
 	v1core "k8s.io/client-go/kubernetes/typed/core/v1"
 	v1beta1extensions "k8s.io/client-go/kubernetes/typed/extensions/v1beta1"
+
+	cli "github.com/stackanetes/kubernetes-entrypoint/client"
 )
 
 type Client struct {

mocks/daemonset.go

@@ -25,13 +25,15 @@ const (
 )
 
 func (d dClient) Get(name string, opts metav1.GetOptions) (*v1beta1.DaemonSet, error) {
-	matchLabelName := MockContainerName
+	if name == FailingDaemonsetName || name == IncorrectNamespaceDaemonsetName {
+		return nil, fmt.Errorf("Mock daemonset didn't work")
+	}
 
-	if name == FailingDaemonsetName {
+	matchLabelName := MockContainerName
-		return nil, fmt.Errorf("Mock daemonset didnt work")
+	switch name {
-	} else if name == FailingMatchLabelsDaemonsetName {
+	case FailingMatchLabelsDaemonsetName:
 		matchLabelName = FailingMatchLabel
-	} else if name == NotReadyMatchLabelsDaemonsetName {
+	case NotReadyMatchLabelsDaemonsetName:
 		matchLabelName = SameHostNotReadyMatchLabel
 	}
 
@@ -46,8 +48,6 @@ func (d dClient) Get(name string, opts metav1.GetOptions) (*v1beta1.DaemonSet, e
 
 	if name == CorrectNamespaceDaemonsetName {
 		ds.ObjectMeta.Namespace = CorrectDaemonsetNamespace
-	} else if name == IncorrectNamespaceDaemonsetName {
-		return nil, fmt.Errorf("Mock daemonset didnt work")
 	}
 
 	return ds, nil
@@ -79,7 +79,8 @@ func (d dClient) Watch(options metav1.ListOptions) (watch.Interface, error) {
 	return nil, fmt.Errorf("Not implemented")
 }
 
-func (d dClient) Patch(name string, pt types.PatchType, data []byte, subresources ...string) (result *v1beta1.DaemonSet, err error) {
+func (d dClient) Patch(name string, pt types.PatchType, data []byte,
+	subresources ...string) (result *v1beta1.DaemonSet, err error) {
 	return nil, fmt.Errorf("Not implemented")
 }
 

mocks/endpoints.go

@@ -3,12 +3,12 @@ package mocks
 import (
 	"fmt"
 
-	"k8s.io/api/core/v1"
+	v1 "k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	types "k8s.io/apimachinery/pkg/types"
 	watch "k8s.io/apimachinery/pkg/watch"
 	v1core "k8s.io/client-go/kubernetes/typed/core/v1"
-	"k8s.io/client-go/rest"
+	rest "k8s.io/client-go/rest"
 )
 
 type eClient struct {
@@ -70,11 +70,13 @@ func (e eClient) Watch(options metav1.ListOptions) (watch.Interface, error) {
 	return nil, fmt.Errorf("Not implemented")
 }
 
-func (e eClient) ProxyGet(scheme string, name string, port string, path string, params map[string]string) rest.ResponseWrapper {
+func (e eClient) ProxyGet(scheme string, name string, port string, path string,
+	params map[string]string) rest.ResponseWrapper {
 	return nil
 }
 
-func (e eClient) Patch(name string, pt types.PatchType, data []byte, subresources ...string) (result *v1.Endpoints, err error) {
+func (e eClient) Patch(name string, pt types.PatchType, data []byte,
+	subresources ...string) (result *v1.Endpoints, err error) {
 	return nil, fmt.Errorf("Not implemented")
 }
 

mocks/job.go

@@ -45,13 +45,16 @@ func (j jClient) DeleteCollection(options *metav1.DeleteOptions, listOptions met
 }
 func (j jClient) List(options metav1.ListOptions) (*v1.JobList, error) {
 	var jobs []v1.Job
-	if options.LabelSelector == fmt.Sprintf("name=%s", SucceedingJobLabel) {
+
+	switch options.LabelSelector {
+	case fmt.Sprintf("name=%s", SucceedingJobLabel):
 		jobs = []v1.Job{NewJob(1)}
-	} else if options.LabelSelector == fmt.Sprintf("name=%s", FailingJobLabel) {
+	case fmt.Sprintf("name=%s", FailingJobLabel):
 		jobs = []v1.Job{NewJob(1), NewJob(0)}
-	} else {
+	default:
 		return nil, fmt.Errorf("Mock job didnt work")
 	}
+
 	return &v1.JobList{
 		Items: jobs,
 	}, nil
@@ -69,7 +72,8 @@ func (j jClient) Watch(options metav1.ListOptions) (watch.Interface, error) {
 	return nil, fmt.Errorf("Not implemented")
 }
 
-func (j jClient) Patch(name string, pt types.PatchType, data []byte, subresources ...string) (result *v1.Job, err error) {
+func (j jClient) Patch(name string, pt types.PatchType, data []byte,
+	subresources ...string) (result *v1.Job, err error) {
 	return nil, fmt.Errorf("Not implemented")
 }
 func NewJClient() v1batch.JobInterface {

mocks/pod.go

@@ -3,13 +3,13 @@ package mocks
 import (
 	"fmt"
 
-	"k8s.io/api/core/v1"
+	v1 "k8s.io/api/core/v1"
 	policy "k8s.io/api/policy/v1beta1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	types "k8s.io/apimachinery/pkg/types"
 	watch "k8s.io/apimachinery/pkg/watch"
 	v1core "k8s.io/client-go/kubernetes/typed/core/v1"
-	"k8s.io/client-go/rest"
+	rest "k8s.io/client-go/rest"
 )
 
 const MockContainerName = "TEST_CONTAINER"
@@ -120,7 +120,8 @@ func (p pClient) GetLogs(name string, opts *v1.PodLogOptions) *rest.Request {
 	return nil
 }
 
-func (p pClient) Patch(name string, pt types.PatchType, data []byte, subresources ...string) (result *v1.Pod, err error) {
+func (p pClient) Patch(name string, pt types.PatchType, data []byte,
+	subresources ...string) (result *v1.Pod, err error) {
 	return nil, fmt.Errorf("Not implemented")
 }
 func NewPClient() v1core.PodInterface {

mocks/service.go

@@ -3,12 +3,12 @@ package mocks
 import (
 	"fmt"
 
-	"k8s.io/api/core/v1"
+	v1 "k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	types "k8s.io/apimachinery/pkg/types"
 	watch "k8s.io/apimachinery/pkg/watch"
 	v1core "k8s.io/client-go/kubernetes/typed/core/v1"
-	"k8s.io/client-go/rest"
+	rest "k8s.io/client-go/rest"
 )
 
 type sClient struct {
@@ -57,11 +57,13 @@ func (s sClient) Watch(options metav1.ListOptions) (watch.Interface, error) {
 	return nil, fmt.Errorf("Not implemented")
 }
 
-func (s sClient) ProxyGet(scheme string, name string, port string, path string, params map[string]string) rest.ResponseWrapper {
+func (s sClient) ProxyGet(scheme string, name string, port string, path string,
+	params map[string]string) rest.ResponseWrapper {
 	return nil
 }
 
-func (s sClient) Patch(name string, pt types.PatchType, data []byte, subresources ...string) (result *v1.Service, err error) {
+func (s sClient) Patch(name string, pt types.PatchType, data []byte,
+	subresources ...string) (result *v1.Service, err error) {
 	return nil, fmt.Errorf("Not implemented")
 }
 

util/command/command.go

@@ -8,18 +8,18 @@ import (
 	"github.com/stackanetes/kubernetes-entrypoint/logger"
 )
 
-func Execute(command []string) (err error) {
+func Execute(command []string) error {
 	path, err := exec.LookPath(command[0])
 	if err != nil {
 		logger.Error.Printf("Cannot find a binary %v : %v", command[0], err)
-		return
+		return err
 	}
 
 	env := os.Environ()
 	err = syscall.Exec(path, command, env)
 	if err != nil {
 		logger.Error.Printf("Executing command %v failed: %v", command, err)
-		return
+		return err
 	}
-	return
+	return nil
 }

util/env/env.go

@@ -49,7 +49,7 @@ func SplitEnvToDeps(env string) (envList []Dependency) {
 
 	envVars := strings.Split(e, separator)
 	namespace := GetBaseNamespace()
-	dep := Dependency{}
+	var dep Dependency
 	for _, envVar := range envVars {
 		if strings.Contains(envVar, Separator) {
 			nameAfterSplit := strings.Split(envVar, Separator)
@@ -61,15 +61,11 @@ func SplitEnvToDeps(env string) (envList []Dependency) {
 				logger.Warning.Printf("Invalid format, missing namespace %s", envVar)
 				continue
 			}
-
 			dep = Dependency{Name: nameAfterSplit[1], Namespace: nameAfterSplit[0]}
-
 		} else {
 			dep = Dependency{Name: envVar, Namespace: namespace}
 		}
-
 		envList = append(envList, dep)
-
 	}
 
 	return envList

util/env/env_test.go

@@ -6,79 +6,95 @@ import (
 	"testing"
 )
 
-func TestSplitEnvToListWithColon(t *testing.T) {
+const (
+	name1            = "foo"
+	name2            = "bar"
+	defaultNamespace = "default"
+	altNamespace1    = "fooNS"
+	altNamespace2    = "barNS"
+)
 
+func TestSplitEnvToListWithComma(t *testing.T) {
 	defer os.Unsetenv("TEST_LIST")
-
+	os.Setenv("TEST_LIST", name1+","+name2)
-	os.Setenv("TEST_LIST", "foo,bar")
 	list := SplitEnvToDeps("TEST_LIST")
-	if list == nil {
+	if len(list) != 2 {
-		t.Errorf("Expected: not nil")
+		t.Errorf("Expected len to be 2 not %d", len(list))
 	}
-	if list[0].Name != "foo" {
+	if list[0].Name != name1 {
-		t.Errorf("Expected: foo got %s", list[0])
+		t.Errorf("Expected: %s got %s", name1, list[0])
 	}
-	if list[1].Name != "bar" {
+	if list[1].Name != name2 {
-		t.Errorf("Expected: bar got %s", list[1])
+		t.Errorf("Expected: %s got %s", name2, list[1])
 	}
+}
 
-	os.Setenv("TEST_LIST", "foo1")
+func TestSplitEnvToList(t *testing.T) {
-	list1 := SplitEnvToDeps("TEST_LIST")
+	defer os.Unsetenv("TEST_LIST")
-	if list1 == nil {
+	os.Setenv("TEST_LIST", name1)
-		t.Errorf("Expected: not nil")
+	list := SplitEnvToDeps("TEST_LIST")
+	if len(list) != 1 {
+		t.Errorf("Expected len to be 1 not %d", len(list))
 	}
-	if len(list1) != 1 {
+	if list[0].Name != name1 {
-		t.Errorf("Expected len to be 1 not %d", len(list1))
+		t.Errorf("Expected: %s got %s", name1, list[0])
 	}
-	if list1[0].Name != "foo1" {
+	if list[0].Namespace != defaultNamespace {
-		t.Errorf("Expected: foo1 got %s", list1[0])
+		t.Errorf("Expected: %s got %s", defaultNamespace, list[0].Namespace)
 	}
+}
 
-	os.Setenv("TEST_LIST", "foo:foo")
+func TestSplitEnvToListWithColon(t *testing.T) {
-	list2 := SplitEnvToDeps("TEST_LIST")
+	defer os.Unsetenv("TEST_LIST")
-	if list2[0].Name != "foo" {
+	os.Setenv("TEST_LIST", altNamespace1+":"+name1)
-		t.Errorf("Expected: foo got %s", list2[0].Name)
+	list := SplitEnvToDeps("TEST_LIST")
+	if len(list) != 1 {
+		t.Errorf("Expected len to be 1 not %d", len(list))
 	}
-	if list2[0].Namespace != "foo" {
+	if list[0].Name != name1 {
-		t.Errorf("Expected: foo got %s", list2[0].Namespace)
+		t.Errorf("Expected: %s got %s", name1, list[0].Name)
 	}
+	if list[0].Namespace != altNamespace1 {
+		t.Errorf("Expected: %s got %s", altNamespace1, list[0].Namespace)
+	}
+}
 
-	os.Setenv("TEST_LIST", "bar")
+func TestSplitEnvToListWithTooManyColons(t *testing.T) {
-	list3 := SplitEnvToDeps("TEST_LIST")
+	// TODO(howell): This should probably expect an error
-	if list3[0].Name != "bar" {
+	defer os.Unsetenv("TEST_LIST")
-		t.Errorf("Expected: bar got %s", list3[0].Name)
+	os.Setenv("TEST_LIST", "too:many:colons")
-	}
+	list := SplitEnvToDeps("TEST_LIST")
-	if list3[0].Namespace != "default" {
+	if len(list) != 0 {
-		t.Errorf("Expected: default got %s", list3[0].Namespace)
-	}
-
-	os.Setenv("TEST_LIST", "foo:foo1:foo2")
-	list4 := SplitEnvToDeps("TEST_LIST")
-	if len(list4) != 0 {
 		t.Errorf("Expected list to be empty")
 	}
+}
 
-	os.Setenv("TEST_LIST", "foo:foo1:foo2,bar")
+func TestSplitEnvToListWithColonsAndCommas(t *testing.T) {
-	list5 := SplitEnvToDeps("TEST_LIST")
+	defer os.Unsetenv("TEST_LIST")
-	if list5[0].Namespace != "default" {
+	os.Setenv("TEST_LIST", altNamespace1+":"+name1+","+altNamespace2+":"+name2)
-		t.Errorf("Expected: default got %s", list5[0].Namespace)
+	list := SplitEnvToDeps("TEST_LIST")
+	if len(list) != 2 {
+		t.Errorf("Expected len to be 2 not %d", len(list))
 	}
-	if list5[0].Name != "bar" {
+	if list[0].Name != name1 {
-		t.Errorf("Expected: bar got %s", list5[0].Name)
+		t.Errorf("Expected: %s got %s", name1, list[0].Name)
 	}
+	if list[0].Namespace != altNamespace1 {
+		t.Errorf("Expected: %s got %s", altNamespace1, list[0].Namespace)
+	}
+	if list[1].Name != name2 {
+		t.Errorf("Expected: %s got %s", name2, list[0].Name)
+	}
+	if list[1].Namespace != altNamespace2 {
+		t.Errorf("Expected: %s got %s", altNamespace2, list[0].Namespace)
+	}
+}
 
-	os.Setenv("TEST_LIST", "foo:foo1:foo2,bar:foo")
+func TestSplitEnvToListWithMissingNamespace(t *testing.T) {
-	list6 := SplitEnvToDeps("TEST_LIST")
+	defer os.Unsetenv("TEST_LIST")
-	if list6[0].Namespace != "bar" {
+	os.Setenv("TEST_LIST", ":name")
-		t.Errorf("Expected: bar got %s", list6[0].Namespace)
+	list := SplitEnvToDeps("TEST_LIST")
-	}
+	if len(list) != 0 {
-	if list6[0].Name != "foo" {
-		t.Errorf("Expected: foo got %s", list6[0].Name)
-	}
-
-	os.Setenv("TEST_LIST", ":foo")
-	list7 := SplitEnvToDeps("TEST_LIST")
-	if len(list7) != 0 {
 		t.Errorf("Invalid format, missing namespace in pod")
 	}
 }
@@ -87,26 +103,48 @@ func TestSplitEmptyEnvWithColon(t *testing.T) {
 	defer os.Unsetenv("TEST_LIST")
 	os.Setenv("TEST_LIST", "")
 	list := SplitEnvToDeps("TEST_LIST")
-	if list != nil {
+	if len(list) != 0 {
-		t.Errorf("Expected nil got %v", list)
+		t.Errorf("Expected list to be empty")
 	}
 }
 
 func TestSplitPodEnvToDepsSuccess(t *testing.T) {
-	defer os.Unsetenv("NAMESPACE")
+	testListJSONVal := `[
-	os.Setenv("NAMESPACE", `TEST_NAMESPACE`)
+  {
-	defer os.Unsetenv("TEST_LIST_JSON")
+    "namespace": "` + name1 + `",
-	os.Setenv("TEST_LIST_JSON", `[{"namespace": "foo", "labels": {"k1": "v1", "k2": "v2"}, "requireSameNode": true}, {"labels": {"k1": "v1", "k2": "v2"}}]`)
+    "labels": {
+      "k1": "v1",
+      "k2": "v2"
+    },
+    "requireSameNode": true
+  },
+  {
+    "labels": {
+      "k1": "v1",
+      "k2": "v2"
+     }
+  }
+]`
+	os.Setenv("NAMESPACE", "TEST_NAMESPACE")
+	os.Setenv("TEST_LIST_JSON", testListJSONVal)
 	actual := SplitPodEnvToDeps("TEST_LIST_JSON")
 	expected := []PodDependency{
-		PodDependency{Namespace: "foo", Labels: map[string]string{
+		{
+			Namespace: name1,
+			Labels: map[string]string{
 				"k1": "v1",
 				"k2": "v2",
-		}, RequireSameNode: true},
+			},
-		PodDependency{Namespace: "TEST_NAMESPACE", Labels: map[string]string{
+			RequireSameNode: true,
+		},
+		{
+			Namespace: "TEST_NAMESPACE",
+			Labels: map[string]string{
 				"k1": "v1",
 				"k2": "v2",
-		}, RequireSameNode: false},
+			},
+			RequireSameNode: false,
+		},
 	}
 
 	if !reflect.DeepEqual(expected, actual) {
@@ -133,19 +171,35 @@ func TestSplitPodEnvToDepsIgnoreInvalid(t *testing.T) {
 }
 
 func TestSplitJobEnvToDepsJsonSuccess(t *testing.T) {
+	testListJSONVal := `[
+  {
+    "namespace": "` + altNamespace1 + `",
+    "labels": {
+      "k1": "v1",
+      "k2": "v2"
+    }
+  },
+  {
+    "name": "` + name1 + `"
+  }
+]`
 	defer os.Unsetenv("NAMESPACE")
-	os.Setenv("NAMESPACE", `TEST_NAMESPACE`)
+	os.Setenv("NAMESPACE", "TEST_NAMESPACE")
 	defer os.Unsetenv("TEST_LIST_JSON")
-	os.Setenv("TEST_LIST_JSON", `[{"namespace": "foo", "labels": {"k1": "v1", "k2": "v2"}}, {"name": "bar"}]`)
+	os.Setenv("TEST_LIST_JSON", testListJSONVal)
 	actual := SplitJobEnvToDeps("TEST_LIST", "TEST_LIST_JSON")
 	expected := []JobDependency{
-		JobDependency{
+		{
-			Name:      "",
+			Namespace: altNamespace1,
-			Namespace: "foo", Labels: map[string]string{
+			Labels: map[string]string{
 				"k1": "v1",
 				"k2": "v2",
-			}},
+			},
-		JobDependency{Name: "bar", Namespace: "TEST_NAMESPACE", Labels: nil},
+		},
+		{
+			Name:      name1,
+			Namespace: "TEST_NAMESPACE",
+		},
 	}
 
 	if !reflect.DeepEqual(expected, actual) {
@@ -155,14 +209,16 @@ func TestSplitJobEnvToDepsJsonSuccess(t *testing.T) {
 
 func TestSplitJobEnvToDepsPlainSuccess(t *testing.T) {
 	defer os.Unsetenv("NAMESPACE")
-	os.Setenv("NAMESPACE", `TEST_NAMESPACE`)
+	os.Setenv("NAMESPACE", "TEST_NAMESPACE")
 	defer os.Unsetenv("TEST_LIST")
-	os.Setenv("TEST_LIST", `plain`)
+	os.Setenv("TEST_LIST", "plain")
 	actual := SplitJobEnvToDeps("TEST_LIST", "TEST_LIST_JSON")
 	expected := []JobDependency{
-		JobDependency{Name: "plain", Namespace: "TEST_NAMESPACE", Labels: nil},
+		{
+			Name:      "plain",
+			Namespace: "TEST_NAMESPACE",
+		},
 	}
-
 	if !reflect.DeepEqual(expected, actual) {
 		t.Errorf("Expected: %v Got: %v", expected, actual)
 	}
@@ -170,16 +226,18 @@ func TestSplitJobEnvToDepsPlainSuccess(t *testing.T) {
 
 func TestSplitJobEnvToDepsJsonPrecedence(t *testing.T) {
 	defer os.Unsetenv("NAMESPACE")
-	os.Setenv("NAMESPACE", `TEST_NAMESPACE`)
+	os.Setenv("NAMESPACE", "TEST_NAMESPACE")
 	defer os.Unsetenv("TEST_LIST_JSON")
 	os.Setenv("TEST_LIST_JSON", `[{"name": "json"}]`)
 	defer os.Unsetenv("TEST_LIST")
-	os.Setenv("TEST_LIST", `plain`)
+	os.Setenv("TEST_LIST", "plain")
 	actual := SplitJobEnvToDeps("TEST_LIST", "TEST_LIST_JSON")
 	expected := []JobDependency{
-		JobDependency{Name: "json", Namespace: "TEST_NAMESPACE", Labels: nil},
+		{
+			Name:      "json",
+			Namespace: "TEST_NAMESPACE",
+		},
 	}
-
 	if !reflect.DeepEqual(expected, actual) {
 		t.Errorf("Expected: %v Got: %v", expected, actual)
 	}
@@ -201,18 +259,27 @@ func TestSplitJobEnvToDepsIgnoreInvalid(t *testing.T) {
 	}
 }
 
+func TestSplitCommandUnset(t *testing.T) {
+	defer os.Unsetenv("COMMAND")
+	list := SplitCommand()
+	if len(list) > 0 {
+		t.Errorf("Expected len to be 0, got %d", len(list))
+	}
+}
+
+func TestSplitCommandEmpty(t *testing.T) {
+	defer os.Unsetenv("COMMAND")
+	os.Setenv("COMMAND", "")
+	list := SplitCommand()
+	if len(list) > 0 {
+		t.Errorf("Expected len to be 0, got %v", len(list))
+	}
+}
+
 func TestSplitCommand(t *testing.T) {
 	defer os.Unsetenv("COMMAND")
-	list2 := SplitCommand()
-	if len(list2) > 0 {
-		t.Errorf("Expected len to be 0, got %v", len(list2))
-	}
 	os.Setenv("COMMAND", "echo test")
 	list := SplitCommand()
-	if list == nil {
-		t.Errorf("Expected slice, got nil")
-		return
-	}
 	if len(list) != 2 {
 		t.Errorf("Expected two elements, got %v", len(list))
 	}
@@ -222,30 +289,22 @@ func TestSplitCommand(t *testing.T) {
 	if list[1] != "test" {
 		t.Errorf("Expected test, got %s", list[1])
 	}
+}
 
-	os.Setenv("COMMAND", "")
+func TestGetBaseNamespaceEmpty(t *testing.T) {
-	list1 := SplitCommand()
+	defer os.Unsetenv("NAMESPACE")
-	if len(list1) > 0 {
+	os.Setenv("NAMESPACE", "")
-		t.Errorf("Expected len to be 0, got %v", len(list1))
+	getBaseNamespace := GetBaseNamespace()
+	if getBaseNamespace != defaultNamespace {
+		t.Errorf("Expected namespace to be %s, got %s", defaultNamespace, getBaseNamespace)
 	}
-
 }
 
 func TestGetBaseNamespace(t *testing.T) {
 	defer os.Unsetenv("NAMESPACE")
-	os.Setenv("NAMESPACE", "")
-	getBaseNamespace := GetBaseNamespace()
-	if getBaseNamespace != "default" {
-		t.Errorf("Expected namespace to be default, got %v", getBaseNamespace)
-	}
 	os.Setenv("NAMESPACE", "foo")
-	getBaseNamespace = GetBaseNamespace()
+	getBaseNamespace := GetBaseNamespace()
 	if getBaseNamespace != "foo" {
 		t.Errorf("Expected namespace to be foo, got %v", getBaseNamespace)
 	}
-	os.Setenv("NAMESPACE", "default")
-	getBaseNamespace = GetBaseNamespace()
-	if getBaseNamespace != "default" {
-		t.Errorf("Expected namespace to be default, got %v", getBaseNamespace)
-	}
 }

util/util.go

@@ -2,13 +2,15 @@ package util
 
 import (
 	"fmt"
-	"github.com/stackanetes/kubernetes-entrypoint/util/env"
 	"net"
 	"os"
 	"strings"
+
+	"github.com/stackanetes/kubernetes-entrypoint/logger"
+	"github.com/stackanetes/kubernetes-entrypoint/util/env"
 )
 
-func GetIp() (ip string, err error) {
+func GetIp() (string, error) {
 	var iface string
 	if iface = os.Getenv("INTERFACE_NAME"); iface == "" {
 		return "", fmt.Errorf("Environment variable INTERFACE_NAME not set")
@@ -23,13 +25,13 @@ func GetIp() (ip string, err error) {
 		return "", fmt.Errorf("Cannot get ip: %v", err)
 	}
 	//Take first element to get rid of subnet
-	ip = strings.Split(address[0].String(), "/")[0]
+	ip := strings.Split(address[0].String(), "/")[0]
-	return
+	return ip, nil
 }
 
 func ContainsSeparator(envString string, kind string) bool {
 	if strings.Contains(envString, env.Separator) {
-		fmt.Errorf("%s doesn't accept namespace: %s", kind, envString)
+		logger.Error.Printf("%s doesn't accept namespace: %s", kind, envString)
 		return true
 	}
 	return false

util/util_suite_test.go

@@ -1,10 +1,10 @@
 package util_test
 
 import (
+	"testing"
+
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
-
-	"testing"
 )
 
 func TestUtil(t *testing.T) {