fluxcd-flux2/cmd/flux/get.go
Michael Bridgen 2bb09697ce Centralise adapter types
Since the generic commands tend to share a few of the methods they
need -- at least AsClientObject -- it's worth having just one wrapper
struct for each API type, and adding methods to it where necessary.

For the automation types, I put these in auto.go.

While doing this I also did some tidying:

 - I changed the name of the wrappers to `<type>Adapter`, and the
   generic adapter to `universalAdapter` (it's only needed for delete,
   so far).

 - I de-exported and renamed some interface methods e.g.,
   `exportItem`. They aren't needed outside the package.

Signed-off-by: Michael Bridgen <michael@weave.works>
2020-12-11 16:34:18 +00:00

113 lines
2.8 KiB
Go

/*
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"
"os"
"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 sources and resources",
Long: "The get sub-commands print the statuses of sources and resources.",
}
var allNamespaces bool
func init() {
getCmd.PersistentFlags().BoolVarP(&allNamespaces, "all-namespaces", "A", false,
"list the requested object(s) across all namespaces")
rootCmd.AddCommand(getCmd)
}
type summarisable interface {
adapter
len() int
summariseItem(i int, includeNamespace 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"
}
type named interface {
GetName() string
GetNamespace() string
}
func nameColumns(item named, includeNamespace bool) []string {
if includeNamespace {
return []string{item.GetNamespace(), item.GetName()}
}
return []string{item.GetName()}
}
var namespaceHeader = []string{"Namespace"}
type getCommand struct {
headers []string
list summarisable
}
func (get getCommand) run(cmd *cobra.Command, args []string) error {
ctx, cancel := context.WithTimeout(context.Background(), timeout)
defer cancel()
kubeClient, err := utils.KubeClient(kubeconfig, kubecontext)
if err != nil {
return err
}
var listOpts []client.ListOption
if !allNamespaces {
listOpts = append(listOpts, client.InNamespace(namespace))
}
err = kubeClient.List(ctx, get.list.asRuntimeObject(), listOpts...)
if err != nil {
return err
}
if get.list.len() == 0 {
logger.Failuref("no imagerepository objects found in %s namespace", namespace)
return nil
}
header := get.list.headers(allNamespaces)
var rows [][]string
for i := 0; i < get.list.len(); i++ {
row := get.list.summariseItem(i, allNamespaces)
rows = append(rows, row)
}
utils.PrintTable(os.Stdout, header, rows)
return nil
}