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Adds service get command (knative#90)
* Adds service get command replaces service list command * Updates go.mod and vendors/* * Adds message if no services found in requested namespace * Adds tests for service get
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,54 @@ | ||
| // 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 implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
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| package commands | ||
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| import ( | ||
| hprinters "github.com/knative/client/pkg/printers" | ||
| "github.com/spf13/cobra" | ||
| ) | ||
|
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| // HumanPrintFlags provides default flags necessary for printing. | ||
| // Given the following flag values, a printer can be requested that knows | ||
| // how to handle printing based on these values. | ||
| type HumanPrintFlags struct { | ||
| //TODO: Add more flags as required | ||
| } | ||
|
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| // AllowedFormats returns more customized formating options | ||
| func (f *HumanPrintFlags) AllowedFormats() []string { | ||
| // TODO: Add more formats eg: wide | ||
| return []string{""} | ||
| } | ||
|
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| // ToPrinter receives returns a printer capable of | ||
| // handling human-readable output. | ||
| func (f *HumanPrintFlags) ToPrinter() (hprinters.ResourcePrinter, error) { | ||
| p := hprinters.NewTablePrinter(hprinters.PrintOptions{}) | ||
| // Add the column definitions and respective functions | ||
| ServiceGetHandlers(p) | ||
| return p, nil | ||
| } | ||
|
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| // AddFlags receives a *cobra.Command reference and binds | ||
| // flags related to human-readable printing to it | ||
| func (f *HumanPrintFlags) AddFlags(c *cobra.Command) { | ||
| //TODO: Add more flags as required | ||
| } | ||
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| // NewHumanPrintFlags returns flags associated with | ||
| // human-readable printing, with default values set. | ||
| func NewHumanPrintFlags() *HumanPrintFlags { | ||
| return &HumanPrintFlags{} | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,181 @@ | ||
| // 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. | ||
|
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| package commands | ||
|
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| import ( | ||
| "fmt" | ||
| hprinters "github.com/knative/client/pkg/printers" | ||
| duckv1alpha1 "github.com/knative/pkg/apis/duck/v1alpha1" | ||
| servingv1alpha1 "github.com/knative/serving/pkg/apis/serving/v1alpha1" | ||
| "github.com/spf13/cobra" | ||
| metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" | ||
| metav1beta1 "k8s.io/apimachinery/pkg/apis/meta/v1beta1" | ||
| "k8s.io/apimachinery/pkg/runtime" | ||
| "k8s.io/apimachinery/pkg/util/duration" | ||
| "k8s.io/cli-runtime/pkg/genericclioptions" | ||
| "time" | ||
| ) | ||
|
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| // ServiceGetFlags composes common printer flag structs | ||
| // used in the Get command. | ||
| type ServiceGetFlags struct { | ||
| GenericPrintFlags *genericclioptions.PrintFlags | ||
| HumanReadableFlags *HumanPrintFlags | ||
| } | ||
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| // AllowedFormats is the list of formats in which data can be displayed | ||
| func (f *ServiceGetFlags) AllowedFormats() []string { | ||
| formats := f.GenericPrintFlags.AllowedFormats() | ||
| formats = append(formats, f.HumanReadableFlags.AllowedFormats()...) | ||
| return formats | ||
| } | ||
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| // ToPrinter attempts to find a composed set of ServiceGetFlags suitable for | ||
| // returning a printer based on current flag values. | ||
| func (f *ServiceGetFlags) 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 | ||
| } | ||
|
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| // AddFlags receives a *cobra.Command reference and binds | ||
| // flags related to humanreadable and template printing. | ||
| func (f *ServiceGetFlags) AddFlags(cmd *cobra.Command) { | ||
| f.GenericPrintFlags.AddFlags(cmd) | ||
| f.HumanReadableFlags.AddFlags(cmd) | ||
| } | ||
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| // NewGetPrintFlags returns flags associated with humanreadable, | ||
| // template, and "name" printing, with default values set. | ||
| func NewServiceGetFlags() *ServiceGetFlags { | ||
| return &ServiceGetFlags{ | ||
| GenericPrintFlags: genericclioptions.NewPrintFlags(""), | ||
| HumanReadableFlags: NewHumanPrintFlags(), | ||
| } | ||
| } | ||
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| // ServiceGetHandlers adds print handlers for service get command | ||
| func ServiceGetHandlers(h hprinters.PrintHandler) { | ||
| kServiceColumnDefinitions := []metav1beta1.TableColumnDefinition{ | ||
| {Name: "Name", Type: "string", Description: "Name of the knative service."}, | ||
| {Name: "Domain", Type: "string", Description: "Domain name of the knative service."}, | ||
| //{Name: "LastCreatedRevision", Type: "string", Description: "Name of last revision created."}, | ||
| //{Name: "LastReadyRevision", Type: "string", Description: "Name of last ready revision."}, | ||
| {Name: "Generation", Type: "integer", Description: "Sequence number of 'Generation' of the service that was last processed by the controller."}, | ||
| {Name: "Age", Type: "string", Description: "Age of the service."}, | ||
| {Name: "Conditions", Type: "string", Description: "Conditions describing statuses of service components."}, | ||
| {Name: "Ready", Type: "string", Description: "Ready condition status of the service."}, | ||
| {Name: "Reason", Type: "string", Description: "Reason for non-ready condition of the service."}, | ||
| } | ||
| h.TableHandler(kServiceColumnDefinitions, printKService) | ||
| h.TableHandler(kServiceColumnDefinitions, printKServiceList) | ||
| } | ||
|
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| // conditionsValue returns the True conditions count among total conditions | ||
| func conditionsValue(conditions duckv1alpha1.Conditions) string { | ||
| var ok int | ||
| for _, condition := range conditions { | ||
| if condition.Status == "True" { | ||
| ok++ | ||
| } | ||
| } | ||
| return fmt.Sprintf("%d OK / %d", ok, len(conditions)) | ||
| } | ||
|
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| // readyCondition returns status of resource's Ready type condition | ||
| func readyCondition(conditions duckv1alpha1.Conditions) string { | ||
| for _, condition := range conditions { | ||
| if condition.Type == duckv1alpha1.ConditionReady { | ||
| return string(condition.Status) | ||
| } | ||
| } | ||
| return "<unknown>" | ||
| } | ||
|
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| func nonReadyConditionReason(conditions duckv1alpha1.Conditions) string { | ||
| for _, condition := range conditions { | ||
| if condition.Type == duckv1alpha1.ConditionReady { | ||
| if string(condition.Status) == "True" { | ||
| return "" | ||
| } | ||
| if condition.Message != "" { | ||
| return fmt.Sprintf("%s : %s", condition.Reason, condition.Message) | ||
| } | ||
| return string(condition.Reason) | ||
| } | ||
| } | ||
| return "<unknown>" | ||
| } | ||
|
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| // translateTimestampSince returns the elapsed time since timestamp in | ||
| // human-readable approximation. | ||
| func translateTimestampSince(timestamp metav1.Time) string { | ||
| if timestamp.IsZero() { | ||
| return "<unknown>" | ||
| } | ||
| return duration.HumanDuration(time.Since(timestamp.Time)) | ||
| } | ||
|
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| // printKServiceList populates the knative service list table rows | ||
| func printKServiceList(kServiceList *servingv1alpha1.ServiceList, options hprinters.PrintOptions) ([]metav1beta1.TableRow, error) { | ||
| rows := make([]metav1beta1.TableRow, 0, len(kServiceList.Items)) | ||
| for _, ksvc := range kServiceList.Items { | ||
| r, err := printKService(&ksvc, options) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| rows = append(rows, r...) | ||
| } | ||
| return rows, nil | ||
| } | ||
|
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| // printKService populates the knative service table rows | ||
| func printKService(kService *servingv1alpha1.Service, options hprinters.PrintOptions) ([]metav1beta1.TableRow, error) { | ||
| name := kService.Name | ||
| domain := kService.Status.Domain | ||
| //lastCreatedRevision := kService.Status.LatestCreatedRevisionName | ||
| //lastReadyRevision := kService.Status.LatestReadyRevisionName | ||
| generation := kService.Status.ObservedGeneration | ||
| age := translateTimestampSince(kService.CreationTimestamp) | ||
| conditions := conditionsValue(kService.Status.Conditions) | ||
| ready := readyCondition(kService.Status.Conditions) | ||
| reason := nonReadyConditionReason(kService.Status.Conditions) | ||
|
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| row := metav1beta1.TableRow{ | ||
| Object: runtime.RawExtension{Object: kService}, | ||
| } | ||
| row.Cells = append(row.Cells, | ||
| name, | ||
| domain, | ||
| //lastCreatedRevision, | ||
| //lastReadyRevision, | ||
| generation, | ||
| age, | ||
| conditions, | ||
| ready, | ||
| reason) | ||
| return []metav1beta1.TableRow{row}, nil | ||
| } |
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