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182 lines
5.4 KiB
182 lines
5.4 KiB
/*
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Copyright © 2020-2023 The k3d Author(s)
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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 cluster
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import (
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"context"
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"encoding/json"
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"fmt"
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"os"
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"strings"
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"github.com/liggitt/tabwriter"
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"github.com/spf13/cobra"
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"sigs.k8s.io/yaml"
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"github.com/k3d-io/k3d/v5/cmd/util"
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k3cluster "github.com/k3d-io/k3d/v5/pkg/client"
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l "github.com/k3d-io/k3d/v5/pkg/logger"
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"github.com/k3d-io/k3d/v5/pkg/runtimes"
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k3d "github.com/k3d-io/k3d/v5/pkg/types"
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)
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// TODO : deal with --all flag to manage differentiate started cluster and stopped cluster like `docker ps` and `docker ps -a`
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type clusterFlags struct {
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noHeader bool
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token bool
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output string
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}
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// NewCmdClusterList returns a new cobra command
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func NewCmdClusterList() *cobra.Command {
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clusterFlags := clusterFlags{}
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// create new command
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cmd := &cobra.Command{
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Use: "list [NAME [NAME...]]",
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Aliases: []string{"ls", "get"},
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Short: "List cluster(s)",
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Long: `List cluster(s).`,
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Run: func(cmd *cobra.Command, args []string) {
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clusters := buildClusterList(cmd.Context(), args)
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PrintClusters(clusters, clusterFlags)
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},
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ValidArgsFunction: util.ValidArgsAvailableClusters,
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}
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// add flags
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cmd.Flags().BoolVar(&clusterFlags.noHeader, "no-headers", false, "Disable headers")
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cmd.Flags().BoolVar(&clusterFlags.token, "token", false, "Print k3s cluster token")
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cmd.Flags().StringVarP(&clusterFlags.output, "output", "o", "", "Output format. One of: json|yaml")
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// add subcommands
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// done
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return cmd
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}
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func buildClusterList(ctx context.Context, args []string) []*k3d.Cluster {
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var clusters []*k3d.Cluster
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var err error
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if len(args) == 0 {
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// cluster name not specified : get all clusters
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clusters, err = k3cluster.ClusterList(ctx, runtimes.SelectedRuntime)
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if err != nil {
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l.Log().Fatalln(err)
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}
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} else {
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for _, clusterName := range args {
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// cluster name specified : get specific cluster
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retrievedCluster, err := k3cluster.ClusterGet(ctx, runtimes.SelectedRuntime, &k3d.Cluster{Name: clusterName})
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if err != nil {
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l.Log().Fatalln(err)
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}
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clusters = append(clusters, retrievedCluster)
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}
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}
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return clusters
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}
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// PrintPrintClusters : display list of cluster
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func PrintClusters(clusters []*k3d.Cluster, flags clusterFlags) {
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// the output details printed when we dump JSON/YAML
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type jsonOutput struct {
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k3d.Cluster
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ServersRunning int `json:"serversRunning"`
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ServersCount int `json:"serversCount"`
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AgentsRunning int `json:"agentsRunning"`
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AgentsCount int `json:"agentsCount"`
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LoadBalancer bool `json:"hasLoadbalancer,omitempty"`
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}
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jsonOutputEntries := []jsonOutput{}
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outputFormat := strings.ToLower(flags.output)
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tabwriter := tabwriter.NewWriter(os.Stdout, 6, 4, 3, ' ', tabwriter.RememberWidths)
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defer tabwriter.Flush()
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if outputFormat != "json" && outputFormat != "yaml" {
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if !flags.noHeader {
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headers := []string{"NAME", "SERVERS", "AGENTS", "LOADBALANCER"} // TODO: getCluster: add status column
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if flags.token {
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headers = append(headers, "TOKEN")
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}
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_, err := fmt.Fprintf(tabwriter, "%s\n", strings.Join(headers, "\t"))
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if err != nil {
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l.Log().Fatalln("Failed to print headers")
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}
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}
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}
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k3cluster.SortClusters(clusters)
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for _, cluster := range clusters {
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serverCount, serversRunning := cluster.ServerCountRunning()
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agentCount, agentsRunning := cluster.AgentCountRunning()
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hasLB := cluster.HasLoadBalancer()
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if outputFormat == "json" || outputFormat == "yaml" {
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entry := jsonOutput{
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Cluster: *cluster,
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ServersRunning: serversRunning,
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ServersCount: serverCount,
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AgentsRunning: agentsRunning,
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AgentsCount: agentCount,
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LoadBalancer: hasLB,
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}
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if !flags.token {
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entry.Token = ""
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}
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// clear some things
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entry.ExternalDatastore = nil
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jsonOutputEntries = append(jsonOutputEntries, entry)
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} else {
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if flags.token {
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fmt.Fprintf(tabwriter, "%s\t%d/%d\t%d/%d\t%t\t%s\n", cluster.Name, serversRunning, serverCount, agentsRunning, agentCount, hasLB, cluster.Token)
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} else {
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fmt.Fprintf(tabwriter, "%s\t%d/%d\t%d/%d\t%t\n", cluster.Name, serversRunning, serverCount, agentsRunning, agentCount, hasLB)
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}
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}
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}
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if outputFormat == "json" {
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b, err := json.Marshal(jsonOutputEntries)
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if err != nil {
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fmt.Println(err)
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return
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}
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fmt.Println(string(b))
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} else if outputFormat == "yaml" {
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b, err := yaml.Marshal(jsonOutputEntries)
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if err != nil {
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fmt.Println(err)
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return
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}
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fmt.Println(string(b))
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}
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}
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