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get.go
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get.go
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/*
Copyright 2020 The Flux authors
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package main
import (
"context"
"fmt"
"os"
"strings"
"github.com/spf13/cobra"
apimeta "k8s.io/apimachinery/pkg/api/meta"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"sigs.k8s.io/controller-runtime/pkg/client"
"github.com/fluxcd/pkg/apis/meta"
"github.com/fluxcd/flux2/internal/utils"
)
var getCmd = &cobra.Command{
Use: "get",
Short: "Get the resources and their status",
Long: "The get sub-commands print the statuses of Flux resources.",
}
type GetFlags struct {
allNamespaces bool
}
var getArgs GetFlags
func init() {
getCmd.PersistentFlags().BoolVarP(&getArgs.allNamespaces, "all-namespaces", "A", false,
"list the requested object(s) across all namespaces")
rootCmd.AddCommand(getCmd)
}
type summarisable interface {
listAdapter
summariseItem(i int, includeNamespace bool, includeKind bool) []string
headers(includeNamespace bool) []string
}
// --- these help with implementations of summarisable
func statusAndMessage(conditions []metav1.Condition) (string, string) {
if c := apimeta.FindStatusCondition(conditions, meta.ReadyCondition); c != nil {
return string(c.Status), c.Message
}
return string(metav1.ConditionFalse), "waiting to be reconciled"
}
func nameColumns(item named, includeNamespace bool, includeKind bool) []string {
name := item.GetName()
if includeKind {
name = fmt.Sprintf("%s/%s",
strings.ToLower(item.GetObjectKind().GroupVersionKind().Kind),
item.GetName())
}
if includeNamespace {
return []string{item.GetNamespace(), name}
}
return []string{name}
}
var namespaceHeader = []string{"Namespace"}
type getCommand struct {
apiType
list summarisable
}
func (get getCommand) run(cmd *cobra.Command, args []string) error {
ctx, cancel := context.WithTimeout(context.Background(), rootArgs.timeout)
defer cancel()
kubeClient, err := utils.KubeClient(rootArgs.kubeconfig, rootArgs.kubecontext)
if err != nil {
return err
}
var listOpts []client.ListOption
if !getArgs.allNamespaces {
listOpts = append(listOpts, client.InNamespace(rootArgs.namespace))
}
if len(args) > 0 {
listOpts = append(listOpts, client.MatchingFields{"metadata.name": args[0]})
}
err = kubeClient.List(ctx, get.list.asClientList(), listOpts...)
if err != nil {
return err
}
getAll := cmd.Use == "all"
if get.list.len() == 0 {
if !getAll {
logger.Failuref("no %s objects found in %s namespace", get.kind, rootArgs.namespace)
}
return nil
}
header := get.list.headers(getArgs.allNamespaces)
var rows [][]string
for i := 0; i < get.list.len(); i++ {
row := get.list.summariseItem(i, getArgs.allNamespaces, getAll)
rows = append(rows, row)
}
utils.PrintTable(os.Stdout, header, rows)
if getAll {
fmt.Println()
}
return nil
}