Files
kustomize/cmd/config/internal/commands/cmdcreatesubstitution.go
2020-07-30 12:51:57 -07:00

86 lines
2.5 KiB
Go

// Copyright 2019 The Kubernetes Authors.
// SPDX-License-Identifier: Apache-2.0
package commands
import (
"fmt"
"github.com/go-openapi/spec"
"github.com/spf13/cobra"
"sigs.k8s.io/kustomize/cmd/config/ext"
"sigs.k8s.io/kustomize/kyaml/errors"
"sigs.k8s.io/kustomize/kyaml/fieldmeta"
"sigs.k8s.io/kustomize/kyaml/openapi"
"sigs.k8s.io/kustomize/kyaml/setters2/settersutil"
)
// NewCreateSubstitutionRunner returns a command runner.
func NewCreateSubstitutionRunner(parent string) *CreateSubstitutionRunner {
r := &CreateSubstitutionRunner{}
cs := &cobra.Command{
Use: "create-subst DIR NAME",
Args: cobra.ExactArgs(2),
PreRunE: r.preRunE,
RunE: r.runE,
}
cs.Flags().StringVar(&r.CreateSubstitution.FieldName, "field", "",
"name of the field to set -- e.g. --field image")
cs.Flags().StringVar(&r.CreateSubstitution.FieldValue, "field-value", "",
"value of the field to create substitution for -- e.g. --field-value nginx:0.1.0")
cs.Flags().StringVar(&r.CreateSubstitution.Pattern, "pattern", "",
`substitution pattern -- e.g. --pattern \${my-image-setter}:\${my-tag-setter}`)
_ = cs.MarkFlagRequired("pattern")
_ = cs.MarkFlagRequired("field-value")
fixDocs(parent, cs)
r.Command = cs
return r
}
func CreateSubstitutionCommand(parent string) *cobra.Command {
return NewCreateSubstitutionRunner(parent).Command
}
type CreateSubstitutionRunner struct {
Command *cobra.Command
CreateSubstitution settersutil.SubstitutionCreator
OpenAPIFile string
Values []string
}
func (r *CreateSubstitutionRunner) runE(c *cobra.Command, args []string) error {
return handleError(c, r.CreateSubstitution.Create(r.OpenAPIFile, args[0]))
}
func (r *CreateSubstitutionRunner) preRunE(c *cobra.Command, args []string) error {
var err error
r.CreateSubstitution.Name = args[1]
if err != nil {
return err
}
r.OpenAPIFile, err = ext.GetOpenAPIFile(args)
if err != nil {
return err
}
if err := openapi.AddSchemaFromFile(r.OpenAPIFile); err != nil {
return err
}
// check if setter with same name exists and throw error
ref, err := spec.NewRef(fieldmeta.DefinitionsPrefix + fieldmeta.SetterDefinitionPrefix + r.CreateSubstitution.Name)
if err != nil {
return err
}
setter, _ := openapi.Resolve(&ref)
// if setter already exists with input substitution name, throw error
if setter != nil {
return errors.Errorf(fmt.Sprintf("setter with name %s already exists, "+
"substitution and setter can't have same name", r.CreateSubstitution.Name))
}
return nil
}