mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-12-20 20:10:22 +00:00
272 lines
8.0 KiB
Go
272 lines
8.0 KiB
Go
/*
|
|
Copyright 2015 The Kubernetes 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 kubectl
|
|
|
|
import (
|
|
"fmt"
|
|
"io/ioutil"
|
|
"os"
|
|
"path"
|
|
"strings"
|
|
|
|
"k8s.io/api/core/v1"
|
|
"k8s.io/apimachinery/pkg/runtime"
|
|
"k8s.io/apimachinery/pkg/util/validation"
|
|
"k8s.io/kubernetes/pkg/kubectl/util"
|
|
"k8s.io/kubernetes/pkg/kubectl/util/hash"
|
|
)
|
|
|
|
// SecretGeneratorV1 supports stable generation of an opaque secret
|
|
type SecretGeneratorV1 struct {
|
|
// Name of secret (required)
|
|
Name string
|
|
// Type of secret (optional)
|
|
Type string
|
|
// FileSources to derive the secret from (optional)
|
|
FileSources []string
|
|
// LiteralSources to derive the secret from (optional)
|
|
LiteralSources []string
|
|
// EnvFileSource to derive the secret from (optional)
|
|
EnvFileSource string
|
|
// AppendHash; if true, derive a hash from the Secret data and type and append it to the name
|
|
AppendHash bool
|
|
}
|
|
|
|
// Ensure it supports the generator pattern that uses parameter injection
|
|
var _ Generator = &SecretGeneratorV1{}
|
|
|
|
// Ensure it supports the generator pattern that uses parameters specified during construction
|
|
var _ StructuredGenerator = &SecretGeneratorV1{}
|
|
|
|
// Generate returns a secret using the specified parameters
|
|
func (s SecretGeneratorV1) Generate(genericParams map[string]interface{}) (runtime.Object, error) {
|
|
err := ValidateParams(s.ParamNames(), genericParams)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
delegate := &SecretGeneratorV1{}
|
|
fromFileStrings, found := genericParams["from-file"]
|
|
if found {
|
|
fromFileArray, isArray := fromFileStrings.([]string)
|
|
if !isArray {
|
|
return nil, fmt.Errorf("expected []string, found :%v", fromFileStrings)
|
|
}
|
|
delegate.FileSources = fromFileArray
|
|
delete(genericParams, "from-file")
|
|
}
|
|
fromLiteralStrings, found := genericParams["from-literal"]
|
|
if found {
|
|
fromLiteralArray, isArray := fromLiteralStrings.([]string)
|
|
if !isArray {
|
|
return nil, fmt.Errorf("expected []string, found :%v", fromLiteralStrings)
|
|
}
|
|
delegate.LiteralSources = fromLiteralArray
|
|
delete(genericParams, "from-literal")
|
|
}
|
|
fromEnvFileString, found := genericParams["from-env-file"]
|
|
if found {
|
|
fromEnvFile, isString := fromEnvFileString.(string)
|
|
if !isString {
|
|
return nil, fmt.Errorf("expected string, found :%v", fromEnvFileString)
|
|
}
|
|
delegate.EnvFileSource = fromEnvFile
|
|
delete(genericParams, "from-env-file")
|
|
}
|
|
|
|
hashParam, found := genericParams["append-hash"]
|
|
if found {
|
|
hashBool, isBool := hashParam.(bool)
|
|
if !isBool {
|
|
return nil, fmt.Errorf("expected bool, found :%v", hashParam)
|
|
}
|
|
delegate.AppendHash = hashBool
|
|
delete(genericParams, "append-hash")
|
|
}
|
|
|
|
params := map[string]string{}
|
|
for key, value := range genericParams {
|
|
strVal, isString := value.(string)
|
|
if !isString {
|
|
return nil, fmt.Errorf("expected string, saw %v for '%s'", value, key)
|
|
}
|
|
params[key] = strVal
|
|
}
|
|
delegate.Name = params["name"]
|
|
delegate.Type = params["type"]
|
|
|
|
return delegate.StructuredGenerate()
|
|
}
|
|
|
|
// ParamNames returns the set of supported input parameters when using the parameter injection generator pattern
|
|
func (s SecretGeneratorV1) ParamNames() []GeneratorParam {
|
|
return []GeneratorParam{
|
|
{"name", true},
|
|
{"type", false},
|
|
{"from-file", false},
|
|
{"from-literal", false},
|
|
{"from-env-file", false},
|
|
{"force", false},
|
|
{"append-hash", false},
|
|
}
|
|
}
|
|
|
|
// StructuredGenerate outputs a secret object using the configured fields
|
|
func (s SecretGeneratorV1) StructuredGenerate() (runtime.Object, error) {
|
|
if err := s.validate(); err != nil {
|
|
return nil, err
|
|
}
|
|
secret := &v1.Secret{}
|
|
secret.SetGroupVersionKind(v1.SchemeGroupVersion.WithKind("Secret"))
|
|
secret.Name = s.Name
|
|
secret.Data = map[string][]byte{}
|
|
if len(s.Type) > 0 {
|
|
secret.Type = v1.SecretType(s.Type)
|
|
}
|
|
if len(s.FileSources) > 0 {
|
|
if err := handleFromFileSources(secret, s.FileSources); err != nil {
|
|
return nil, err
|
|
}
|
|
}
|
|
if len(s.LiteralSources) > 0 {
|
|
if err := handleFromLiteralSources(secret, s.LiteralSources); err != nil {
|
|
return nil, err
|
|
}
|
|
}
|
|
if len(s.EnvFileSource) > 0 {
|
|
if err := handleFromEnvFileSource(secret, s.EnvFileSource); err != nil {
|
|
return nil, err
|
|
}
|
|
}
|
|
if s.AppendHash {
|
|
h, err := hash.SecretHash(secret)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
secret.Name = fmt.Sprintf("%s-%s", secret.Name, h)
|
|
}
|
|
return secret, nil
|
|
}
|
|
|
|
// validate validates required fields are set to support structured generation
|
|
func (s SecretGeneratorV1) validate() error {
|
|
if len(s.Name) == 0 {
|
|
return fmt.Errorf("name must be specified")
|
|
}
|
|
if len(s.EnvFileSource) > 0 && (len(s.FileSources) > 0 || len(s.LiteralSources) > 0) {
|
|
return fmt.Errorf("from-env-file cannot be combined with from-file or from-literal")
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// handleFromLiteralSources adds the specified literal source information into the provided secret
|
|
func handleFromLiteralSources(secret *v1.Secret, literalSources []string) error {
|
|
for _, literalSource := range literalSources {
|
|
keyName, value, err := util.ParseLiteralSource(literalSource)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if err = addKeyFromLiteralToSecret(secret, keyName, []byte(value)); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// handleFromFileSources adds the specified file source information into the provided secret
|
|
func handleFromFileSources(secret *v1.Secret, fileSources []string) error {
|
|
for _, fileSource := range fileSources {
|
|
keyName, filePath, err := util.ParseFileSource(fileSource)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
info, err := os.Stat(filePath)
|
|
if err != nil {
|
|
switch err := err.(type) {
|
|
case *os.PathError:
|
|
return fmt.Errorf("error reading %s: %v", filePath, err.Err)
|
|
default:
|
|
return fmt.Errorf("error reading %s: %v", filePath, err)
|
|
}
|
|
}
|
|
if info.IsDir() {
|
|
if strings.Contains(fileSource, "=") {
|
|
return fmt.Errorf("cannot give a key name for a directory path.")
|
|
}
|
|
fileList, err := ioutil.ReadDir(filePath)
|
|
if err != nil {
|
|
return fmt.Errorf("error listing files in %s: %v", filePath, err)
|
|
}
|
|
for _, item := range fileList {
|
|
itemPath := path.Join(filePath, item.Name())
|
|
if item.Mode().IsRegular() {
|
|
keyName = item.Name()
|
|
if err = addKeyFromFileToSecret(secret, keyName, itemPath); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
if err := addKeyFromFileToSecret(secret, keyName, filePath); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// handleFromEnvFileSource adds the specified env file source information
|
|
// into the provided secret
|
|
func handleFromEnvFileSource(secret *v1.Secret, envFileSource string) error {
|
|
info, err := os.Stat(envFileSource)
|
|
if err != nil {
|
|
switch err := err.(type) {
|
|
case *os.PathError:
|
|
return fmt.Errorf("error reading %s: %v", envFileSource, err.Err)
|
|
default:
|
|
return fmt.Errorf("error reading %s: %v", envFileSource, err)
|
|
}
|
|
}
|
|
if info.IsDir() {
|
|
return fmt.Errorf("env secret file cannot be a directory")
|
|
}
|
|
|
|
return addFromEnvFile(envFileSource, func(key, value string) error {
|
|
return addKeyFromLiteralToSecret(secret, key, []byte(value))
|
|
})
|
|
}
|
|
|
|
func addKeyFromFileToSecret(secret *v1.Secret, keyName, filePath string) error {
|
|
data, err := ioutil.ReadFile(filePath)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return addKeyFromLiteralToSecret(secret, keyName, data)
|
|
}
|
|
|
|
func addKeyFromLiteralToSecret(secret *v1.Secret, keyName string, data []byte) error {
|
|
if errs := validation.IsConfigMapKey(keyName); len(errs) != 0 {
|
|
return fmt.Errorf("%q is not a valid key name for a Secret: %s", keyName, strings.Join(errs, ";"))
|
|
}
|
|
|
|
if _, entryExists := secret.Data[keyName]; entryExists {
|
|
return fmt.Errorf("cannot add key %s, another key by that name already exists: %v.", keyName, secret.Data)
|
|
}
|
|
secret.Data[keyName] = data
|
|
return nil
|
|
}
|