mirror of
https://github.com/kubernetes-sigs/kustomize.git
synced 2026-06-12 01:14:22 +00:00
135 lines
3.5 KiB
Go
135 lines
3.5 KiB
Go
/*
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Copyright 2018 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package configmapandsecret
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import (
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"context"
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"fmt"
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"os/exec"
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"path/filepath"
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"strings"
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"time"
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"github.com/kubernetes-sigs/kustomize/pkg/fs"
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"github.com/kubernetes-sigs/kustomize/pkg/types"
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"github.com/pkg/errors"
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corev1 "k8s.io/api/core/v1"
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"k8s.io/apimachinery/pkg/util/validation"
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)
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// SecretFactory makes Secrets.
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type SecretFactory struct {
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fSys fs.FileSystem
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wd string
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}
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// NewSecretFactory returns a new SecretFactory.
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func NewSecretFactory(fSys fs.FileSystem, wd string) *SecretFactory {
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return &SecretFactory{fSys: fSys, wd: wd}
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}
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func (f *SecretFactory) makeFreshSecret(args *types.SecretArgs) *corev1.Secret {
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s := &corev1.Secret{}
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s.APIVersion = "v1"
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s.Kind = "Secret"
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s.Name = args.Name
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s.Type = corev1.SecretType(args.Type)
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if s.Type == "" {
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s.Type = corev1.SecretTypeOpaque
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}
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s.Data = map[string][]byte{}
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return s
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}
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// MakeSecret returns a new secret.
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func (f *SecretFactory) MakeSecret(args *types.SecretArgs) (*corev1.Secret, error) {
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var all []kvPair
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var err error
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s := f.makeFreshSecret(args)
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pairs, err := f.keyValuesFromEnvFileCommand(args.EnvCommand)
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if err != nil {
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return nil, errors.Wrap(err, fmt.Sprintf(
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"env source file: %s",
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args.EnvCommand))
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}
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all = append(all, pairs...)
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pairs, err = f.keyValuesFromCommands(args.Commands)
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if err != nil {
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return nil, errors.Wrap(err, fmt.Sprintf(
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"commands %v", args.Commands))
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}
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all = append(all, pairs...)
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for _, kv := range all {
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err = addKvToSecret(s, kv.key, kv.value)
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if err != nil {
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return nil, err
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}
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}
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return s, nil
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}
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func addKvToSecret(secret *corev1.Secret, keyName, data string) error {
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// Note, the rules for SecretKeys keys are the exact same as the ones for ConfigMap.
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if errs := validation.IsConfigMapKey(keyName); len(errs) != 0 {
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return fmt.Errorf("%q is not a valid key name for a Secret: %s", keyName, strings.Join(errs, ";"))
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}
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if _, entryExists := secret.Data[keyName]; entryExists {
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return fmt.Errorf("cannot add key %s, another key by that name already exists", keyName)
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}
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secret.Data[keyName] = []byte(data)
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return nil
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}
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func (f *SecretFactory) keyValuesFromEnvFileCommand(cmd string) ([]kvPair, error) {
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content, err := f.createSecretKey(cmd)
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if err != nil {
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return nil, err
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}
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return keyValuesFromLines(content)
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}
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func (f *SecretFactory) keyValuesFromCommands(sources map[string]string) ([]kvPair, error) {
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var kvs []kvPair
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for k, cmd := range sources {
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content, err := f.createSecretKey(cmd)
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if err != nil {
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return nil, err
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}
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kvs = append(kvs, kvPair{key: k, value: string(content)})
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}
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return kvs, nil
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}
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// Run a command, return its output as the secret.
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func (f *SecretFactory) createSecretKey(command string) ([]byte, error) {
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if !f.fSys.IsDir(f.wd) {
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f.wd = filepath.Dir(f.wd)
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if !f.fSys.IsDir(f.wd) {
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return nil, errors.New("not a directory: " + f.wd)
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}
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}
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ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
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defer cancel()
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cmd := exec.CommandContext(ctx, "sh", "-c", command)
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cmd.Dir = f.wd
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return cmd.Output()
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}
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