126 lines
3.9 KiB
Go
126 lines
3.9 KiB
Go
/*
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Copyright © 2019 Vineeth Pothulapati <vineethpothulapati@outlook.com>
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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*/
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package cmd
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import (
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"fmt"
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"log"
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"strconv"
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"time"
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"github.com/spf13/cobra"
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v1 "github.com/zalando/postgres-operator/pkg/apis/acid.zalan.do/v1"
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PostgresqlLister "github.com/zalando/postgres-operator/pkg/generated/clientset/versioned/typed/acid.zalan.do/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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)
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const (
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TrimCreateTimestamp = 6000000000
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)
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// listCmd represents kubectl pg list.
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var listCmd = &cobra.Command{
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Use: "list",
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Short: "Lists all the resources of kind postgresql",
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Long: `Lists all the info specific to postgresql objects.`,
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Run: func(cmd *cobra.Command, args []string) {
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allNamespaces, _ := cmd.Flags().GetBool("all-namespaces")
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namespace, _ := cmd.Flags().GetString("namespace")
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if allNamespaces {
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list(allNamespaces, "")
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} else {
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list(allNamespaces, namespace)
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}
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},
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Example: `
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#Lists postgres cluster in current namespace
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kubectl pg list
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#Lists postgres clusters in all namespaces
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kubectl pg list -A
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`,
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}
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// list command to list postgres.
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func list(allNamespaces bool, namespace string) {
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config := getConfig()
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postgresConfig, err := PostgresqlLister.NewForConfig(config)
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if err != nil {
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log.Fatal(err)
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}
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var listPostgres *v1.PostgresqlList
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listPostgres, err = postgresConfig.Postgresqls(namespace).List(metav1.ListOptions{})
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if err != nil {
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log.Fatal(err)
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}
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if len(listPostgres.Items) == 0 {
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if namespace != "" {
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fmt.Printf("No Postgresql clusters found in namespace: %v\n", namespace)
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} else {
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fmt.Println("No Postgresql clusters found in all namespaces")
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}
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return
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}
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if allNamespaces {
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listAll(listPostgres)
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} else {
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listWithNamespace(listPostgres)
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}
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}
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func listAll(listPostgres *v1.PostgresqlList) {
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template := "%-32s%-16s%-12s%-12s%-12s%-12s%-12s\n"
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fmt.Printf(template, "NAME", "STATUS", "INSTANCES", "VERSION", "AGE", "VOLUME", "NAMESPACE")
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for _, pgObjs := range listPostgres.Items {
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fmt.Printf(template, pgObjs.Name,
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pgObjs.Status.PostgresClusterStatus,
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strconv.Itoa(int(pgObjs.Spec.NumberOfInstances)),
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pgObjs.Spec.PostgresqlParam.PgVersion,
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time.Since(pgObjs.CreationTimestamp.Time).Truncate(TrimCreateTimestamp),
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pgObjs.Spec.Size, pgObjs.Namespace)
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}
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}
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func listWithNamespace(listPostgres *v1.PostgresqlList) {
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template := "%-32s%-16s%-12s%-12s%-12s%-12s\n"
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fmt.Printf(template, "NAME", "STATUS", "INSTANCES", "VERSION", "AGE", "VOLUME")
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for _, pgObjs := range listPostgres.Items {
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fmt.Printf(template, pgObjs.Name,
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pgObjs.Status.PostgresClusterStatus,
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strconv.Itoa(int(pgObjs.Spec.NumberOfInstances)),
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pgObjs.Spec.PostgresqlParam.PgVersion,
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time.Since(pgObjs.CreationTimestamp.Time).Truncate(TrimCreateTimestamp),
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pgObjs.Spec.Size)
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}
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}
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func init() {
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listCmd.Flags().BoolP("all-namespaces", "A", false, "list pg resources across all namespaces.")
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listCmd.Flags().StringP("namespace", "n", getCurrentNamespace(), "provide the namespace")
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rootCmd.AddCommand(listCmd)
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}
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