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base.go
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base.go
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package base
import (
"bytes"
"fmt"
"path"
"path/filepath"
"strconv"
"github.com/pkg/errors"
kotsscheme "github.com/replicatedhq/kots/kotskinds/client/kotsclientset/scheme"
troubleshootscheme "github.com/replicatedhq/troubleshoot/pkg/client/troubleshootclientset/scheme"
"gopkg.in/yaml.v2"
batchv1 "k8s.io/api/batch/v1"
serializer "k8s.io/apimachinery/pkg/runtime/serializer/json"
"k8s.io/client-go/kubernetes/scheme"
)
type Base struct {
Path string
Namespace string
Files []BaseFile
ErrorFiles []BaseFile
AdditionalFiles []BaseFile
Bases []Base
}
type BaseFile struct {
Path string
Content []byte
Error error
}
type OverlySimpleGVK struct {
APIVersion string `yaml:"apiVersion"`
Kind string `yaml:"kind"`
Metadata OverlySimpleMetadata `yaml:"metadata"`
}
type OverlySimpleMetadata struct {
Name string `yaml:"name"`
Namespace string `yaml:"namespace"`
Annotations map[string]interface{} `json:"annotations"`
}
func init() {
kotsscheme.AddToScheme(scheme.Scheme)
troubleshootscheme.AddToScheme(scheme.Scheme)
}
func GetGVKWithNameAndNs(content []byte, baseNS string) string {
o := OverlySimpleGVK{}
if err := yaml.Unmarshal(content, &o); err != nil {
return ""
}
namespace := baseNS
if o.Metadata.Namespace != "" {
namespace = o.Metadata.Namespace
}
return fmt.Sprintf("%s-%s-%s-%s", o.APIVersion, o.Kind, o.Metadata.Name, namespace)
}
func (f *BaseFile) transpileHelmHooksToKotsHooks() error {
decode := scheme.Codecs.UniversalDeserializer().Decode
obj, gvk, err := decode(f.Content, nil, nil)
if err != nil {
return nil // this isn't an error, it's just not a job witih a hook, that's certain
}
// we currently only support hooks on jobs
if gvk.Group != "batch" || gvk.Version != "v1" || gvk.Kind != "Job" {
return nil
}
job := obj.(*batchv1.Job)
helmHookDeletePolicyAnnotation, ok := job.Annotations["helm.sh/hook-delete-policy"]
if !ok {
return nil
}
job.Annotations["kots.io/hook-delete-policy"] = helmHookDeletePolicyAnnotation
s := serializer.NewYAMLSerializer(serializer.DefaultMetaFactory, scheme.Scheme, scheme.Scheme)
var b bytes.Buffer
if err := s.Encode(job, &b); err != nil {
return errors.Wrap(err, "failed to encode job")
}
f.Content = b.Bytes()
return nil
}
type ParseError struct {
Err error
}
func (e ParseError) Error() string {
return e.Err.Error()
}
// ShouldBeIncludedInBaseKustomization attempts to determine if this is a valid Kubernetes manifest.
// It accomplished this by trying to unmarshal the YAML and looking for a apiVersion and Kind
func (f BaseFile) ShouldBeIncludedInBaseKustomization(excludeKotsKinds bool) (bool, error) {
var m interface{}
if err := yaml.Unmarshal(f.Content, &m); err != nil {
// check if this is a yaml file
if ext := filepath.Ext(f.Path); ext == ".yaml" || ext == ".yml" {
return false, ParseError{Err: err}
}
return false, nil
}
o := OverlySimpleGVK{}
_ = yaml.Unmarshal(f.Content, &o) // error should be caught in previous unmarshal
// check if this is a kubernetes document
if o.APIVersion == "" || o.Kind == "" {
if ext := filepath.Ext(f.Path); ext == ".yaml" || ext == ".yml" {
// ignore empty files and files with only comments
if m == nil {
return false, nil
}
return false, ParseError{Err: errors.New("not a kubernetes document")}
}
return false, nil
}
// Backup is never deployed. kots.io/exclude and kots.io/when are used to enable snapshots
if excludeKotsKinds {
if iskotsAPIVersionKind(o) {
return false, nil
}
}
exclude, err := isExcludedByAnnotation(o.Metadata.Annotations)
return !exclude, errors.Wrapf(err, "failed to check if object %s, kind %s/%s is excluded by annotation", o.Metadata.Name, o.APIVersion, o.Kind)
}
func isExcludedByAnnotation(annotations map[string]interface{}) (bool, error) {
if annotations == nil {
return false, nil
}
if val, ok := annotations["kots.io/exclude"]; ok {
if boolVal, ok := val.(bool); ok {
return boolVal, nil
}
if strVal, ok := val.(string); ok {
boolVal, err := strconv.ParseBool(strVal)
if err != nil {
// should this be a ParseError?
return false, errors.Errorf("unable to parse %s as bool in exclude annotation", strVal)
}
return boolVal, nil
}
// should this be a ParseError?
return false, errors.Errorf("unexpected type in exclude annotation: %T", val)
}
if val, ok := annotations["kots.io/when"]; ok {
if boolVal, ok := val.(bool); ok {
return !boolVal, nil
}
if strVal, ok := val.(string); ok {
boolVal, err := strconv.ParseBool(strVal)
if err != nil {
// should this be a ParseError?
return false, errors.Errorf("unable to parse %s as bool in when annotation", strVal)
}
return !boolVal, nil
}
// should this be a ParseError?
return false, errors.Errorf("unexpected type in when annotation: %T", val)
}
return false, nil
}
func (f BaseFile) IsKotsKind() (bool, error) {
var m interface{}
if err := yaml.Unmarshal(f.Content, &m); err != nil {
// check if this is a yaml file
if ext := filepath.Ext(f.Path); ext == ".yaml" || ext == ".yml" {
return false, ParseError{Err: err}
}
return false, nil
}
o := OverlySimpleGVK{}
_ = yaml.Unmarshal(f.Content, &o) // error should be caught in previous unmarshal
// check if this is a kubernetes document
if o.APIVersion == "" || o.Kind == "" {
// check if this is a yaml file
if ext := filepath.Ext(f.Path); ext == ".yaml" || ext == ".yml" {
// ignore empty files and files with only comments
if m == nil {
return false, nil
}
return false, ParseError{Err: errors.New("not a kubernetes document")}
}
return false, nil
}
return iskotsAPIVersionKind(o), nil
}
func iskotsAPIVersionKind(o OverlySimpleGVK) bool {
if o.APIVersion == "velero.io/v1" && o.Kind == "Backup" {
return true
}
if o.APIVersion == "kots.io/v1beta1" {
return true
}
if o.APIVersion == "troubleshoot.sh/v1beta2" {
return true
}
if o.APIVersion == "troubleshoot.replicated.com/v1beta1" {
return true
}
// In addition to kotskinds, we exclude the application crd for now
if o.APIVersion == "app.k8s.io/v1beta1" {
return true
}
return false
}
func (b Base) ListErrorFiles() []BaseFile {
files := append([]BaseFile{}, b.ErrorFiles...)
for _, b := range b.Bases {
files = append(files, PrependBaseFilesPath(b.ListErrorFiles(), b.Path)...)
}
return files
}
func PrependBaseFilesPath(files []BaseFile, prefix string) []BaseFile {
if prefix == "" {
return files
}
next := []BaseFile{}
for _, file := range files {
file.Path = path.Join(prefix, file.Path)
next = append(next, file)
}
return next
}