Files
uncloud/cmd/uncloud/volume/ls.go
T

106 lines
2.4 KiB
Go

package volume
import (
"context"
"fmt"
"os"
"slices"
"strings"
"text/tabwriter"
"github.com/psviderski/uncloud/internal/cli"
"github.com/psviderski/uncloud/pkg/api"
"github.com/spf13/cobra"
)
type listOptions struct {
machines []string
quiet bool
context string
}
func NewListCommand() *cobra.Command {
opts := listOptions{}
cmd := &cobra.Command{
Use: "ls",
Aliases: []string{"list"},
Short: "List volumes across all machines in the cluster.",
RunE: func(cmd *cobra.Command, args []string) error {
uncli := cmd.Context().Value("cli").(*cli.CLI)
return list(cmd.Context(), uncli, opts)
},
}
cmd.Flags().StringSliceVarP(&opts.machines, "machine", "m", nil,
"Filter volumes by machine name or ID. Can be specified multiple times or as a comma-separated list. "+
"(default is include all machines)")
cmd.Flags().BoolVarP(&opts.quiet, "quiet", "q", false,
"Only display volume names.")
cmd.Flags().StringVarP(&opts.context, "context", "c", "",
"Name of the cluster context. (default is the current context)")
return cmd
}
func list(ctx context.Context, uncli *cli.CLI, opts listOptions) error {
client, err := uncli.ConnectCluster(ctx, opts.context)
if err != nil {
return fmt.Errorf("connect to cluster: %w", err)
}
defer client.Close()
// Apply machine filter if specified.
var filter *api.VolumeFilter
if len(opts.machines) > 0 {
machines := cli.ExpandCommaSeparatedValues(opts.machines)
filter = &api.VolumeFilter{
Machines: machines,
}
}
volumes, err := client.ListVolumes(ctx, filter)
if err != nil {
return fmt.Errorf("list volumes: %w", err)
}
if len(volumes) == 0 {
if !opts.quiet {
fmt.Println("No volumes found.")
}
return nil
}
// Sort the volumes by name first, then by machine name.
slices.SortFunc(volumes, func(a, b api.MachineVolume) int {
cmp := strings.Compare(a.Volume.Name, b.Volume.Name)
if cmp != 0 {
return cmp
}
return strings.Compare(a.MachineName, b.MachineName)
})
// If quiet mode, just print volume names.
if opts.quiet {
for _, v := range volumes {
fmt.Println(v.Volume.Name)
}
return nil
}
// Print the volumes in a table format.
tw := tabwriter.NewWriter(os.Stdout, 0, 0, 3, ' ', 0)
fmt.Fprintln(tw, "NAME\tDRIVER\tMACHINE")
for _, v := range volumes {
fmt.Fprintf(tw, "%s\t%s\t%s\n",
v.Volume.Name,
v.Volume.Driver,
v.MachineName,
)
}
return tw.Flush()
}