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Merge pull request #290 from keisukesakasai/cherry-pick-of-#286-v1.1
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,188 @@ | ||
| /* | ||
| 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 kubectl | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "fmt" | ||
| "os" | ||
| "sort" | ||
| "strings" | ||
| "time" | ||
|
|
||
| "github.com/liggitt/tabwriter" | ||
| "github.com/spf13/cobra" | ||
| v1 "k8s.io/api/core/v1" | ||
| metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" | ||
| "k8s.io/apimachinery/pkg/runtime" | ||
| "k8s.io/apimachinery/pkg/runtime/schema" | ||
| "k8s.io/apimachinery/pkg/util/duration" | ||
| "k8s.io/cli-runtime/pkg/printers" | ||
| api "sigs.k8s.io/hierarchical-namespaces/api/v1alpha2" | ||
| ) | ||
|
|
||
| const ( | ||
| tabwriterMinWidth = 6 | ||
| tabwriterWidth = 4 | ||
| tabwriterPadding = 3 | ||
| tabwriterPadChar = ' ' | ||
| tabwriterFlags = tabwriter.RememberWidths | ||
| ) | ||
|
|
||
| var namespace string | ||
|
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| // Define HierarchicalResourceQuota Table Column | ||
| var hierarchicalResourceQuotaColumnDefinitions = []metav1.TableColumnDefinition{ | ||
| {Name: "Name", Type: "string", Format: "name", Description: metav1.ObjectMeta{}.SwaggerDoc()["name"]}, | ||
| {Name: "Age", Type: "string", Description: metav1.ObjectMeta{}.SwaggerDoc()["creationTimestamp"]}, | ||
| {Name: "Request", Type: "string", Description: "Request represents a minimum amount of cpu/memory that a container may consume."}, | ||
| {Name: "Limit", Type: "string", Description: "Limits control the maximum amount of cpu/memory that a container may use independent of contention on the node."}, | ||
| } | ||
|
|
||
| var hrqCmd = &cobra.Command{ | ||
| Use: "hrq [NAME]", | ||
| Short: "Display one or more HierarchicalResourceQuota", | ||
| Run: Run, | ||
| } | ||
|
|
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| func Run(cmd *cobra.Command, args []string) { | ||
| flags := cmd.Flags() | ||
| table := &metav1.Table{ColumnDefinitions: hierarchicalResourceQuotaColumnDefinitions} | ||
|
|
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| showLabels := flags.Changed("show-labels") | ||
|
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| allResourcesNamespaced := !flags.Changed("all-namespaces") | ||
| if !allResourcesNamespaced { | ||
| namespace = "" | ||
| } | ||
|
|
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| // Get HierarchicalResourceQuotaList from the specified namespace | ||
| hrqList := client.getHRQ(args, namespace) | ||
|
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| if len(hrqList.Items) < 1 { | ||
| if allResourcesNamespaced { | ||
| fmt.Printf("No resources found in %s namespace.\n", namespace) | ||
| os.Exit(1) | ||
| } else { | ||
| fmt.Println("No resources found") | ||
| os.Exit(1) | ||
| } | ||
| } | ||
|
|
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| // Create []metav1.TableRow from HierarchicalResourceQuotaList | ||
| tableRaws, err := printHierarchicalResourceQuotaList(hrqList) | ||
| if err != nil { | ||
| fmt.Printf("Error reading hierarchicalresourcequotas: %s\n", err) | ||
| } | ||
| table.Rows = tableRaws | ||
|
|
||
| // Create writer | ||
| w := tabwriter.NewWriter(os.Stdout, tabwriterMinWidth, tabwriterWidth, tabwriterPadding, tabwriterPadChar, tabwriterFlags) | ||
|
|
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| // Create TablePrinter | ||
| p := printers.NewTablePrinter(printers.PrintOptions{ | ||
| NoHeaders: false, | ||
| WithNamespace: !allResourcesNamespaced, | ||
| WithKind: true, | ||
| Wide: true, | ||
| ShowLabels: showLabels, | ||
| Kind: schema.GroupKind{}, | ||
| ColumnLabels: nil, | ||
| SortBy: "", | ||
| AllowMissingKeys: false, | ||
| }) | ||
|
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| p.PrintObj(table, w) | ||
|
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| w.Flush() | ||
| } | ||
|
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| func printHierarchicalResourceQuota(hierarchicalResourceQuota *api.HierarchicalResourceQuota) ([]metav1.TableRow, error) { | ||
| row := metav1.TableRow{ | ||
| Object: runtime.RawExtension{Object: hierarchicalResourceQuota}, | ||
| } | ||
|
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| resources := make([]v1.ResourceName, 0, len(hierarchicalResourceQuota.Status.Hard)) | ||
| for resource := range hierarchicalResourceQuota.Status.Hard { | ||
| resources = append(resources, resource) | ||
| } | ||
| sort.Sort(SortableResourceNames(resources)) | ||
|
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| requestColumn := bytes.NewBuffer([]byte{}) | ||
| limitColumn := bytes.NewBuffer([]byte{}) | ||
| for i := range resources { | ||
| w := requestColumn | ||
| resource := resources[i] | ||
| usedQuantity := hierarchicalResourceQuota.Status.Used[resource] | ||
| hardQuantity := hierarchicalResourceQuota.Status.Hard[resource] | ||
|
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| // use limitColumn writer if a resource name prefixed with "limits" is found | ||
| if pieces := strings.Split(resource.String(), "."); len(pieces) > 1 && pieces[0] == "limits" { | ||
| w = limitColumn | ||
| } | ||
|
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| fmt.Fprintf(w, "%s: %s/%s, ", resource, usedQuantity.String(), hardQuantity.String()) | ||
| } | ||
|
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| age := translateTimestampSince(hierarchicalResourceQuota.CreationTimestamp) | ||
| row.Cells = append(row.Cells, hierarchicalResourceQuota.Name, age, strings.TrimSuffix(requestColumn.String(), ", "), strings.TrimSuffix(limitColumn.String(), ", ")) | ||
| return []metav1.TableRow{row}, nil | ||
| } | ||
|
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| func printHierarchicalResourceQuotaList(list *api.HierarchicalResourceQuotaList) ([]metav1.TableRow, error) { | ||
| rows := make([]metav1.TableRow, 0, len(list.Items)) | ||
| for i := range list.Items { | ||
| r, err := printHierarchicalResourceQuota(&list.Items[i]) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| rows = append(rows, r...) | ||
| } | ||
| return rows, nil | ||
| } | ||
|
|
||
| // translateTimestampSince returns the elapsed time since timestamp in | ||
| // human-readable approximation. | ||
| func translateTimestampSince(timestamp metav1.Time) string { | ||
| if timestamp.IsZero() { | ||
| return "<unknown>" | ||
| } | ||
|
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| return duration.HumanDuration(time.Since(timestamp.Time)) | ||
| } | ||
|
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| // SortableResourceNames - An array of sortable resource names | ||
| type SortableResourceNames []v1.ResourceName | ||
|
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| func (list SortableResourceNames) Len() int { | ||
| return len(list) | ||
| } | ||
|
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| func (list SortableResourceNames) Swap(i, j int) { | ||
| list[i], list[j] = list[j], list[i] | ||
| } | ||
|
|
||
| func (list SortableResourceNames) Less(i, j int) bool { | ||
| return list[i] < list[j] | ||
| } | ||
|
|
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| func newHrqCmd() *cobra.Command { | ||
| hrqCmd.Flags().StringVarP(&namespace, "namespace", "n", v1.NamespaceDefault, "If present, the namespace scope for this CLI request") | ||
|
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| hrqCmd.Flags().BoolP("all-namespaces", "A", false, "Displays all HierarchicalResourceQuota on the cluster") | ||
| hrqCmd.Flags().BoolP("show-labels", "", false, "Displays Labels of HierarchicalResourceQuota") | ||
| return hrqCmd | ||
| } |
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