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import.go
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import.go
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// Copyright 2023 The ClusterLink 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 subcommand
import (
"encoding/json"
"fmt"
"github.com/spf13/cobra"
"github.com/spf13/pflag"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"github.com/clusterlink-net/clusterlink/cmd/gwctl/config"
cmdutil "github.com/clusterlink-net/clusterlink/cmd/util"
"github.com/clusterlink-net/clusterlink/pkg/apis/clusterlink.net/v1alpha1"
)
// importOptions is the command line options for 'create import' or 'update import'.
type importOptions struct {
myID string
name string
port uint16
peers []string
merge bool
}
// ImportCreateCmd - create an imported service.
func ImportCreateCmd() *cobra.Command {
o := importOptions{}
cmd := &cobra.Command{
Use: "import",
Short: "Create an imported service",
Long: `Create an imported service that can be bounded to other peers`,
RunE: func(cmd *cobra.Command, args []string) error {
return o.run(false)
},
}
o.addFlags(cmd.Flags())
cmdutil.MarkFlagsRequired(cmd, []string{"name", "port"})
return cmd
}
// ImportUpdateCmd - update an imported service.
func ImportUpdateCmd() *cobra.Command {
o := importOptions{}
cmd := &cobra.Command{
Use: "import",
Short: "Update an imported service",
Long: `Update an imported service that can be bounded to other peers`,
RunE: func(cmd *cobra.Command, args []string) error {
return o.run(true)
},
}
o.addFlags(cmd.Flags())
cmdutil.MarkFlagsRequired(cmd, []string{"name", "port"})
return cmd
}
// addFlags registers flags for the CLI.
func (o *importOptions) addFlags(fs *pflag.FlagSet) {
fs.StringVar(&o.myID, "myid", "", "gwctl ID")
fs.StringVar(&o.name, "name", "", "Imported service name")
fs.Uint16Var(&o.port, "port", 0, "Imported service port")
fs.StringSliceVar(&o.peers, "peer", []string{}, "Remote peer to import the service from")
fs.BoolVar(&o.merge, "merge", false, "Merge with an existing service endpoint")
}
// run performs the execution of the 'create import' or 'update import' subcommand.
func (o *importOptions) run(isUpdate bool) error {
g, err := config.GetClientFromID(o.myID)
if err != nil {
return err
}
importOperation := g.Imports.Create
if isUpdate {
importOperation = g.Imports.Update
}
sources := make([]v1alpha1.ImportSource, len(o.peers))
for i, peer := range o.peers {
sources[i].Peer = peer
sources[i].ExportName = o.name
}
labels := make(map[string]string)
if o.merge {
labels[v1alpha1.LabelImportMerge] = "true"
}
err = importOperation(&v1alpha1.Import{
ObjectMeta: metav1.ObjectMeta{
Name: o.name,
Labels: labels,
},
Spec: v1alpha1.ImportSpec{
Port: o.port,
Sources: sources,
},
})
if err != nil {
return err
}
return nil
}
// importDeleteOptions is the command line options for 'delete import'.
type importDeleteOptions struct {
myID string
name string
}
// ImportDeleteCmd - delete an imported service command.
func ImportDeleteCmd() *cobra.Command {
o := importDeleteOptions{}
cmd := &cobra.Command{
Use: "import",
Short: "Delete an imported service",
Long: `Delete an imported service`,
RunE: func(cmd *cobra.Command, args []string) error {
return o.run()
},
}
o.addFlags(cmd.Flags())
cmdutil.MarkFlagsRequired(cmd, []string{"name"})
return cmd
}
// addFlags registers flags for the CLI.
func (o *importDeleteOptions) addFlags(fs *pflag.FlagSet) {
fs.StringVar(&o.myID, "myid", "", "gwctl ID")
fs.StringVar(&o.name, "name", "", "Imported service name")
}
// run performs the execution of the 'delete import' subcommand.
func (o *importDeleteOptions) run() error {
g, err := config.GetClientFromID(o.myID)
if err != nil {
return err
}
err = g.Imports.Delete(o.name)
if err != nil {
return err
}
return nil
}
// importGetOptions is the command line options for 'get import'.
type importGetOptions struct {
myID string
name string
}
// ImportGetCmd - get imported service command.
func ImportGetCmd() *cobra.Command {
o := importGetOptions{}
cmd := &cobra.Command{
Use: "import",
Short: "Get an imported service",
Long: `Get an imported service`,
RunE: func(cmd *cobra.Command, args []string) error {
return o.run()
},
}
o.addFlags(cmd.Flags())
return cmd
}
// addFlags registers flags for the CLI.I.
func (o *importGetOptions) addFlags(fs *pflag.FlagSet) {
fs.StringVar(&o.myID, "myid", "", "gwctl ID")
fs.StringVar(&o.name, "name", "", "Imported service name. If empty gets all imported services.")
}
// run performs the execution of the 'get import' subcommand.
func (o *importGetOptions) run() error {
importClient, err := config.GetClientFromID(o.myID)
if err != nil {
return err
}
if o.name == "" {
sArr, err := importClient.Imports.List()
if err != nil {
return err
}
imports, ok := sArr.(*[]v1alpha1.Import)
if !ok {
return fmt.Errorf("cannot decode imports list")
}
fmt.Printf("Imported services:\n")
for i := range *imports {
imp := &(*imports)[i]
fmt.Printf(
"%d. Imported Name: %s. Port %v. TargetPort %v. Sources %v.\n",
i+1, imp.Name, imp.Spec.Port, imp.Spec.TargetPort, imp.Spec.Sources)
}
} else {
imp, err := importClient.Imports.Get(o.name)
if err != nil {
return err
}
impJSON, err := json.MarshalIndent(imp, "", " ")
if err != nil {
return err
}
fmt.Printf("%s\n", string(impJSON))
}
return nil
}