Adds revision get command (#97)

* Renames test names for service get command

 also removes unnecessary commented imports

* Adds revision get command

 renames `revision list` ==> `revision get`

* Adds tests for revision get command

* Updates the vendors/modules.txt

* Removes revision list command

pkg/kn/commands/human_readable_flags.go

@@ -36,8 +36,10 @@ func (f *HumanPrintFlags) AllowedFormats() []string {
 // handling human-readable output.
 func (f *HumanPrintFlags) ToPrinter() (hprinters.ResourcePrinter, error) {
 	p := hprinters.NewTablePrinter(hprinters.PrintOptions{})
-	// Add the column definitions and respective functions
+	// Add the column definitions and respective printing functions for service get command
 	ServiceGetHandlers(p)
+	// Add the column definitions and respective printing functions for revision get command
+	RevisionGetHandlers(p)
 	return p, nil
 }
 

pkg/kn/commands/revision.go

@@ -23,7 +23,7 @@ func NewRevisionCommand(p *KnParams) *cobra.Command {
 		Use:   "revision",
 		Short: "Revision command group",
 	}
-	revisionCmd.AddCommand(NewRevisionListCommand(p))
+	revisionCmd.AddCommand(NewRevisionGetCommand(p))
 	revisionCmd.AddCommand(NewRevisionDescribeCommand(p))
 	return revisionCmd
 }

pkg/kn/commands/revision_get.go

@@ -1,4 +1,4 @@
-// Copyright © 2018 The Knative Authors
+// Copyright © 2019 The Knative Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -15,21 +15,20 @@
 package commands
 
 import (
+	"fmt"
+
 	"github.com/spf13/cobra"
-	v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/runtime/schema"
-	"k8s.io/cli-runtime/pkg/genericclioptions"
 )
 
-var revisionListPrintFlags *genericclioptions.PrintFlags
+// NewRevisionGetCommand represents 'kn revision get' command
+func NewRevisionGetCommand(p *KnParams) *cobra.Command {
+	revisionGetFlags := NewRevisionGetFlags()
 
-// listCmd represents the list command
-func NewRevisionListCommand(p *KnParams) *cobra.Command {
-	revisionListPrintFlags = genericclioptions.NewPrintFlags("").WithDefaultOutput(
-		"jsonpath={range .items[*]}{.metadata.name}{\"\\n\"}{end}")
-	revisionListCmd := &cobra.Command{
-		Use:   "list",
-		Short: "List available revisions.",
+	revisionGetCommand := &cobra.Command{
+		Use:   "get",
+		Short: "Get available revisions.",
 		RunE: func(cmd *cobra.Command, args []string) error {
 			client, err := p.ServingFactory()
 			if err != nil {
@@ -43,15 +42,18 @@ func NewRevisionListCommand(p *KnParams) *cobra.Command {
 			if err != nil {
 				return err
 			}
-
-			printer, err := revisionListPrintFlags.ToPrinter()
-			if err != nil {
-				return err
+			if len(revision.Items) == 0 {
+				fmt.Fprintf(cmd.OutOrStdout(), "No resources found.\n")
+				return nil
 			}
 			revision.GetObjectKind().SetGroupVersionKind(schema.GroupVersionKind{
 				Group:   "knative.dev",
 				Version: "v1alpha1",
-				Kind:    "Revision"})
+				Kind:    "revision"})
+			printer, err := revisionGetFlags.ToPrinter()
+			if err != nil {
+				return err
+			}
 			err = printer.PrintObj(revision, cmd.OutOrStdout())
 			if err != nil {
 				return err
@@ -59,7 +61,7 @@ func NewRevisionListCommand(p *KnParams) *cobra.Command {
 			return nil
 		},
 	}
-	AddNamespaceFlags(revisionListCmd.Flags(), true)
-	revisionListPrintFlags.AddFlags(revisionListCmd)
-	return revisionListCmd
+	AddNamespaceFlags(revisionGetCommand.Flags(), true)
+	revisionGetFlags.AddFlags(revisionGetCommand)
+	return revisionGetCommand
 }

pkg/kn/commands/revision_get_flags.go

@@ -0,0 +1,122 @@
+// Copyright © 2019 The Knative Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or im
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package commands
+
+import (
+	hprinters "github.com/knative/client/pkg/printers"
+	serving "github.com/knative/serving/pkg/apis/serving"
+	servingv1alpha1 "github.com/knative/serving/pkg/apis/serving/v1alpha1"
+	"github.com/spf13/cobra"
+	metav1beta1 "k8s.io/apimachinery/pkg/apis/meta/v1beta1"
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/cli-runtime/pkg/genericclioptions"
+)
+
+// RevisionGetFlags composes common printer flag structs
+// used in the Get command.
+type RevisionGetFlags struct {
+	GenericPrintFlags  *genericclioptions.PrintFlags
+	HumanReadableFlags *HumanPrintFlags
+}
+
+// AllowedFormats is the list of formats in which data can be displayed
+func (f *RevisionGetFlags) AllowedFormats() []string {
+	formats := f.GenericPrintFlags.AllowedFormats()
+	formats = append(formats, f.HumanReadableFlags.AllowedFormats()...)
+	return formats
+}
+
+// ToPrinter attempts to find a composed set of RevisionGetFlags suitable for
+// returning a printer based on current flag values.
+func (f *RevisionGetFlags) ToPrinter() (hprinters.ResourcePrinter, error) {
+	// if there are flags specified for generic printing
+	if f.GenericPrintFlags.OutputFlagSpecified() {
+		p, err := f.GenericPrintFlags.ToPrinter()
+		if err != nil {
+			return nil, err
+		}
+		return p, nil
+	}
+	// if no flags specified, use the table printing
+	p, err := f.HumanReadableFlags.ToPrinter()
+	if err != nil {
+		return nil, err
+	}
+	return p, nil
+}
+
+// AddFlags receives a *cobra.Command reference and binds
+// flags related to humanreadable and template printing.
+func (f *RevisionGetFlags) AddFlags(cmd *cobra.Command) {
+	f.GenericPrintFlags.AddFlags(cmd)
+	f.HumanReadableFlags.AddFlags(cmd)
+}
+
+// NewGetPrintFlags returns flags associated with humanreadable,
+// template, and "name" printing, with default values set.
+func NewRevisionGetFlags() *RevisionGetFlags {
+	return &RevisionGetFlags{
+		GenericPrintFlags:  genericclioptions.NewPrintFlags(""),
+		HumanReadableFlags: NewHumanPrintFlags(),
+	}
+}
+
+// RevisionGetHandlers adds print handlers for revision get command
+func RevisionGetHandlers(h hprinters.PrintHandler) {
+	RevisionColumnDefinitions := []metav1beta1.TableColumnDefinition{
+		{Name: "Service", Type: "string", Description: "Name of the knative service."},
+		{Name: "Name", Type: "string", Description: "Name of the revision."},
+		{Name: "Age", Type: "string", Description: "Age of the revision."},
+		{Name: "Conditions", Type: "string", Description: "Conditions describing statuses of revision."},
+		{Name: "Ready", Type: "string", Description: "Ready condition status of the revision."},
+		{Name: "Reason", Type: "string", Description: "Reason for non-ready condition of the revision."},
+	}
+	h.TableHandler(RevisionColumnDefinitions, printRevision)
+	h.TableHandler(RevisionColumnDefinitions, printRevisionList)
+}
+
+// printRevisionList populates the knative revision list table rows
+func printRevisionList(revisionList *servingv1alpha1.RevisionList, options hprinters.PrintOptions) ([]metav1beta1.TableRow, error) {
+	rows := make([]metav1beta1.TableRow, 0, len(revisionList.Items))
+	for _, rev := range revisionList.Items {
+		r, err := printRevision(&rev, options)
+		if err != nil {
+			return nil, err
+		}
+		rows = append(rows, r...)
+	}
+	return rows, nil
+}
+
+// printRevision populates the knative revision table rows
+func printRevision(revision *servingv1alpha1.Revision, options hprinters.PrintOptions) ([]metav1beta1.TableRow, error) {
+	service := revision.Labels[serving.ConfigurationLabelKey]
+	name := revision.Name
+	age := translateTimestampSince(revision.CreationTimestamp)
+	conditions := conditionsValue(revision.Status.Conditions)
+	ready := readyCondition(revision.Status.Conditions)
+	reason := nonReadyConditionReason(revision.Status.Conditions)
+	row := metav1beta1.TableRow{
+		Object: runtime.RawExtension{Object: revision},
+	}
+	row.Cells = append(row.Cells,
+		service,
+		name,
+		age,
+		conditions,
+		ready,
+		reason)
+	return []metav1beta1.TableRow{row}, nil
+}

pkg/kn/commands/revision_get_test.go

@@ -0,0 +1,98 @@
+// Copyright © 2018 The Knative Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package commands
+
+import (
+	"bytes"
+	"strings"
+	"testing"
+
+	serving "github.com/knative/serving/pkg/apis/serving"
+	v1alpha1 "github.com/knative/serving/pkg/apis/serving/v1alpha1"
+	servingclient "github.com/knative/serving/pkg/client/clientset/versioned/typed/serving/v1alpha1"
+	"github.com/knative/serving/pkg/client/clientset/versioned/typed/serving/v1alpha1/fake"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/runtime"
+	client_testing "k8s.io/client-go/testing"
+)
+
+func fakeRevisionGet(args []string, response *v1alpha1.RevisionList) (action client_testing.Action, output []string, err error) {
+	buf := new(bytes.Buffer)
+	fakeServing := &fake.FakeServingV1alpha1{&client_testing.Fake{}}
+	cmd := NewKnCommand(KnParams{
+		Output:         buf,
+		ServingFactory: func() (servingclient.ServingV1alpha1Interface, error) { return fakeServing, nil },
+	})
+	fakeServing.AddReactor("*", "*",
+		func(a client_testing.Action) (bool, runtime.Object, error) {
+			action = a
+			return true, response, nil
+		})
+	cmd.SetArgs(args)
+	err = cmd.Execute()
+	if err != nil {
+		return
+	}
+	output = strings.Split(buf.String(), "\n")
+	return
+}
+
+func TestRevisionGetEmpty(t *testing.T) {
+	action, output, err := fakeRevisionGet([]string{"revision", "get"}, &v1alpha1.RevisionList{})
+	if err != nil {
+		t.Error(err)
+		return
+	}
+	if action == nil {
+		t.Errorf("No action")
+	} else if !action.Matches("list", "revisions") {
+		t.Errorf("Bad action %v", action)
+	} else if output[0] != "No resources found." {
+		t.Errorf("Bad output %s", output[0])
+	}
+}
+
+func TestRevisionGetDefaultOutput(t *testing.T) {
+	revision1 := createMockRevisionWithParams("foo-abcd", "foo")
+	revision2 := createMockRevisionWithParams("bar-wxyz", "bar")
+	RevisionList := &v1alpha1.RevisionList{Items: []v1alpha1.Revision{*revision1, *revision2}}
+	action, output, err := fakeRevisionGet([]string{"revision", "get"}, RevisionList)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if action == nil {
+		t.Errorf("No action")
+	} else if !action.Matches("list", "revisions") {
+		t.Errorf("Bad action %v", action)
+	}
+	testContains(t, output[0], []string{"SERVICE", "NAME", "AGE", "CONDITIONS", "READY", "REASON"}, "column header")
+	testContains(t, output[1], []string{"foo", "foo-abcd"}, "value")
+	testContains(t, output[2], []string{"bar", "bar-wxyz"}, "value")
+}
+
+func createMockRevisionWithParams(name, svcName string) *v1alpha1.Revision {
+	revision := &v1alpha1.Revision{
+		TypeMeta: metav1.TypeMeta{
+			Kind:       "Revision",
+			APIVersion: "knative.dev/v1alpha1",
+		},
+		ObjectMeta: metav1.ObjectMeta{
+			Name:      name,
+			Namespace: "default",
+			Labels:    map[string]string{serving.ConfigurationLabelKey: svcName},
+		},
+	}
+	return revision
+}

pkg/kn/commands/service_get_test.go

@@ -19,22 +19,21 @@ import (
 	"strings"
 	"testing"
 
-	//servinglib "github.com/knative/client/pkg/serving"
 	duckv1alpha1 "github.com/knative/pkg/apis/duck/v1alpha1"
-	"github.com/knative/serving/pkg/apis/serving/v1alpha1"
-	serving "github.com/knative/serving/pkg/client/clientset/versioned/typed/serving/v1alpha1"
+	v1alpha1 "github.com/knative/serving/pkg/apis/serving/v1alpha1"
+	servingclient "github.com/knative/serving/pkg/client/clientset/versioned/typed/serving/v1alpha1"
 	"github.com/knative/serving/pkg/client/clientset/versioned/typed/serving/v1alpha1/fake"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/runtime"
 	client_testing "k8s.io/client-go/testing"
 )
 
-func fakeGet(args []string, response *v1alpha1.ServiceList) (action client_testing.Action, output []string, err error) {
+func fakeServiceGet(args []string, response *v1alpha1.ServiceList) (action client_testing.Action, output []string, err error) {
 	buf := new(bytes.Buffer)
 	fakeServing := &fake.FakeServingV1alpha1{&client_testing.Fake{}}
 	cmd := NewKnCommand(KnParams{
 		Output:         buf,
-		ServingFactory: func() (serving.ServingV1alpha1Interface, error) { return fakeServing, nil },
+		ServingFactory: func() (servingclient.ServingV1alpha1Interface, error) { return fakeServing, nil },
 	})
 	fakeServing.AddReactor("*", "*",
 		func(a client_testing.Action) (bool, runtime.Object, error) {
@@ -51,7 +50,7 @@ func fakeGet(args []string, response *v1alpha1.ServiceList) (action client_testi
 }
 
 func TestGetEmpty(t *testing.T) {
-	action, output, err := fakeGet([]string{"service", "get"}, &v1alpha1.ServiceList{})
+	action, output, err := fakeServiceGet([]string{"service", "get"}, &v1alpha1.ServiceList{})
 	if err != nil {
 		t.Error(err)
 		return
@@ -65,11 +64,11 @@ func TestGetEmpty(t *testing.T) {
 	}
 }
 
-func TestListDefaultOutput(t *testing.T) {
-	service1 := createMockServiceWithParams(t, "foo", "foo.default.example.com", 1)
-	service2 := createMockServiceWithParams(t, "bar", "bar.default.example.com", 2)
+func TestServiceGetDefaultOutput(t *testing.T) {
+	service1 := createMockServiceWithParams("foo", "foo.default.example.com", 1)
+	service2 := createMockServiceWithParams("bar", "bar.default.example.com", 2)
 	serviceList := &v1alpha1.ServiceList{Items: []v1alpha1.Service{*service1, *service2}}
-	action, output, err := fakeGet([]string{"service", "get"}, serviceList)
+	action, output, err := fakeServiceGet([]string{"service", "get"}, serviceList)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -91,7 +90,7 @@ func testContains(t *testing.T, output string, sub []string, element string) {
 	}
 }
 
-func createMockServiceWithParams(t *testing.T, name, domain string, generation int64) *v1alpha1.Service {
+func createMockServiceWithParams(name, domain string, generation int64) *v1alpha1.Service {
 	service := &v1alpha1.Service{
 		TypeMeta: metav1.TypeMeta{
 			Kind:       "Service",

vendor/modules.txt

@@ -70,13 +70,13 @@ github.com/knative/pkg/kmeta
 github.com/knative/pkg/kmp
 github.com/knative/pkg/configmap
 # github.com/knative/serving v0.5.2
+github.com/knative/serving/pkg/apis/serving
 github.com/knative/serving/pkg/apis/serving/v1alpha1
 github.com/knative/serving/pkg/client/clientset/versioned/typed/serving/v1alpha1
 github.com/knative/serving/pkg/apis/autoscaling
 github.com/knative/serving/pkg/apis/config
 github.com/knative/serving/pkg/apis/networking
 github.com/knative/serving/pkg/apis/networking/v1alpha1
-github.com/knative/serving/pkg/apis/serving
 github.com/knative/serving/pkg/client/clientset/versioned/scheme
 github.com/knative/serving/pkg/client/clientset/versioned/typed/serving/v1alpha1/fake
 github.com/knative/serving/pkg/apis/autoscaling/v1alpha1