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list.go
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list.go
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/*
Copyright (C) 2022-2024 ApeCloud Co., Ltd
This file is part of KubeBlocks project
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package class
import (
"fmt"
"sort"
"strings"
"github.com/spf13/cobra"
"k8s.io/apimachinery/pkg/api/resource"
"k8s.io/cli-runtime/pkg/genericiooptions"
"k8s.io/client-go/dynamic"
cmdutil "k8s.io/kubectl/pkg/cmd/util"
"k8s.io/kubectl/pkg/util/templates"
"github.com/apecloud/kubeblocks/pkg/controller/component"
"github.com/apecloud/kbcli/pkg/printer"
"github.com/apecloud/kbcli/pkg/util"
"github.com/apecloud/kbcli/pkg/util/flags"
)
type ListOptions struct {
ClusterDefRef string
Factory cmdutil.Factory
dynamic dynamic.Interface
genericiooptions.IOStreams
}
var listClassExamples = templates.Examples(`
# List all components classes in cluster definition apecloud-mysql
kbcli class list --cluster-definition apecloud-mysql
`)
func NewListCommand(f cmdutil.Factory, streams genericiooptions.IOStreams) *cobra.Command {
o := &ListOptions{IOStreams: streams}
cmd := &cobra.Command{
Use: "list",
Short: "List classes",
Example: listClassExamples,
Run: func(cmd *cobra.Command, args []string) {
util.CheckErr(o.complete(f))
util.CheckErr(o.run())
},
}
flags.AddClusterDefinitionFlag(f, cmd, &o.ClusterDefRef)
util.CheckErr(cmd.MarkFlagRequired("cluster-definition"))
return cmd
}
func (o *ListOptions) complete(f cmdutil.Factory) error {
var err error
o.dynamic, err = f.DynamicClient()
return err
}
func (o *ListOptions) run() error {
clsMgr, _, err := GetManager(o.dynamic, o.ClusterDefRef)
if err != nil {
return err
}
for compName, classes := range clsMgr.GetClasses() {
o.printClass(compName, classes)
}
return nil
}
func (o *ListOptions) printClass(compName string, classes []*component.ComponentClassWithRef) {
tbl := printer.NewTablePrinter(o.Out)
tbl.SetHeader("COMPONENT", "CLASS", "CPU", "MEMORY")
sort.Sort(component.ByClassResource(classes))
for _, cls := range classes {
tbl.AddRow(compName, cls.Name, cls.CPU.String(), normalizeMemory(cls.Memory))
}
tbl.Print()
}
func normalizeMemory(mem resource.Quantity) string {
if !strings.HasSuffix(mem.String(), "m") {
return mem.String()
}
var (
value float64
suffix string
bytes = float64(mem.MilliValue()) / 1000
)
switch {
case bytes < 1024:
value = bytes / 1024
suffix = "Ki"
case bytes < 1024*1024:
value = bytes / 1024 / 1024
suffix = "Mi"
case bytes < 1024*1024*1024:
value = bytes / 1024 / 1024 / 1024
suffix = "Gi"
default:
value = bytes / 1024 / 1024 / 1024 / 1024
suffix = "Ti"
}
return strings.TrimRight(fmt.Sprintf("%.3f", value), "0") + suffix
}