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137 lines
3.8 KiB
137 lines
3.8 KiB
/*
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Copyright © 2020 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 get
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import (
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"fmt"
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"os"
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"sort"
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"strings"
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"github.com/rancher/k3d/pkg/cluster"
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"github.com/rancher/k3d/pkg/runtimes"
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k3d "github.com/rancher/k3d/pkg/types"
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"github.com/spf13/cobra"
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log "github.com/sirupsen/logrus"
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"github.com/liggitt/tabwriter"
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)
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// NewCmdGetCluster returns a new cobra command
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func NewCmdGetCluster() *cobra.Command {
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// create new command
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cmd := &cobra.Command{
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Use: "cluster [NAME [NAME...]]",
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Aliases: []string{"clusters"},
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Short: "Get cluster",
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Long: `Get cluster.`,
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Args: cobra.MinimumNArgs(0), // 0 or more; 0 = all
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Run: func(cmd *cobra.Command, args []string) {
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log.Debugln("get cluster called")
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c, rt, headersOff := parseGetClusterCmd(cmd, args)
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var existingClusters []*k3d.Cluster
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if c == nil { // Option a) no cluster name specified -> get all clusters
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found, err := cluster.GetClusters(rt)
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if err != nil {
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log.Fatalln(err)
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}
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existingClusters = append(existingClusters, found...)
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} else { // Option b) cluster name specified -> get specific cluster
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found, err := cluster.GetCluster(c, rt)
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if err != nil {
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log.Fatalln(err)
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}
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existingClusters = append(existingClusters, found)
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}
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// print existing clusters
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printClusters(existingClusters, headersOff)
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},
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}
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// add flags
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cmd.Flags().Bool("no-headers", false, "Disable headers")
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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 parseGetClusterCmd(cmd *cobra.Command, args []string) (*k3d.Cluster, runtimes.Runtime, bool) {
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// --runtime
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rt, err := cmd.Flags().GetString("runtime")
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if err != nil {
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log.Fatalln("No runtime specified")
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}
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runtime, err := runtimes.GetRuntime(rt)
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if err != nil {
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log.Fatalln(err)
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}
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// --no-headers
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headersOff, err := cmd.Flags().GetBool("no-headers")
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if err != nil {
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log.Fatalln(err)
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}
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// Args = cluster name
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if len(args) == 0 {
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return nil, runtime, headersOff
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}
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cluster := &k3d.Cluster{Name: args[0]} // TODO: validate name first?
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return cluster, runtime, headersOff
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}
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func printClusters(clusters []*k3d.Cluster, headersOff bool) {
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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 !headersOff {
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headers := []string{"NAME", "MASTERS", "WORKERS"} // TODO: add status
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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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log.Fatalln("Failed to print headers")
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}
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}
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sort.Slice(clusters, func(i, j int) bool {
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return clusters[i].Name < clusters[j].Name
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})
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for _, cluster := range clusters {
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masterCount := 0
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workerCount := 0
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for _, node := range cluster.Nodes {
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if node.Role == k3d.MasterRole {
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masterCount++
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} else if node.Role == k3d.WorkerRole {
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workerCount++
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}
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}
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fmt.Fprintf(tabwriter, "%s\t%d\t%d\n", cluster.Name, masterCount, workerCount)
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}
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}
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