/
describeoperator.go
150 lines (135 loc) · 3.42 KB
/
describeoperator.go
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/*
* Copyright 2018-2020 The NATS 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 cmd
import (
"errors"
"fmt"
"github.com/nats-io/jwt/v2"
"github.com/nats-io/nsc/v2/cmd/store"
"github.com/spf13/cobra"
)
func createDescribeOperatorCmd() *cobra.Command {
var params DescribeOperatorParams
cmd := &cobra.Command{
Use: "operator",
Short: "Describes the operator",
Args: cobra.MaximumNArgs(1),
SilenceUsage: true,
RunE: func(cmd *cobra.Command, args []string) error {
return RunMaybeStorelessAction(cmd, args, ¶ms)
},
}
cmd.Flags().StringVarP(¶ms.outputFile, "output-file", "o", "--", "output file, '--' is stdout")
cmd.Flags().StringVarP(¶ms.name, "name", "n", "", "operator name")
return cmd
}
func init() {
describeCmd.AddCommand(createDescribeOperatorCmd())
}
type DescribeOperatorParams struct {
name string
outputFile string
claim jwt.OperatorClaims
raw []byte
}
func (p *DescribeOperatorParams) SetDefaults(ctx ActionCtx) error {
p.name = NameFlagOrArgument(p.name, ctx)
if p.name != "" {
actx, ok := ctx.(*Actx)
if !ok {
return errors.New("unable to cast to actx")
}
s, err := GetStoreForOperator(p.name)
if err != nil {
return err
}
cc, err := s.GetContext()
if err != nil {
return err
}
actx.ctx.Store = s
actx.ctx = cc
} else if ctx.StoreCtx().Store == nil {
return fmt.Errorf("set an operator")
}
return nil
}
func (p *DescribeOperatorParams) PreInteractive(_ ActionCtx) error {
return nil
}
func (p *DescribeOperatorParams) Load(ctx ActionCtx) error {
var err error
if Json || Raw || JsonPath != "" {
p.raw, err = ctx.StoreCtx().Store.ReadRawOperatorClaim()
if err != nil {
return err
}
if Json || JsonPath != "" {
p.raw, err = bodyAsJson(p.raw)
if err != nil {
return err
}
if JsonPath != "" {
p.raw, err = GetField(p.raw, JsonPath)
if err != nil {
return err
}
}
}
} else {
oc, err := ctx.StoreCtx().Store.ReadOperatorClaim()
if err != nil {
return err
}
p.claim = *oc
}
return nil
}
func (p *DescribeOperatorParams) Validate(_ ActionCtx) error {
return nil
}
func (p *DescribeOperatorParams) PostInteractive(_ ActionCtx) error {
return nil
}
func (p *DescribeOperatorParams) Run(_ ActionCtx) (store.Status, error) {
if Raw || Json || JsonPath != "" {
if !IsStdOut(p.outputFile) && Raw {
var err error
p.raw, err = jwt.DecorateJWT(string(p.raw))
if err != nil {
return nil, err
}
}
p.raw = append(p.raw, '\n')
if err := Write(p.outputFile, p.raw); err != nil {
return nil, err
}
} else {
v := NewOperatorDescriber(p.claim).Describe()
data := []byte(v)
if err := Write(p.outputFile, data); err != nil {
return nil, err
}
}
var s store.Status
if !IsStdOut(p.outputFile) {
k := "description"
if Raw {
k = "jwt"
}
s = store.OKStatus("wrote operator %s to %#q", k, AbbrevHomePaths(p.outputFile))
}
return s, nil
}