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config.go
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config.go
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package config
import (
"bytes"
"fmt"
"strings"
"github.com/google/uuid"
"github.com/pkg/errors"
registrytypes "github.com/replicatedhq/kots/pkg/registry/types"
"github.com/replicatedhq/kots/pkg/template"
"github.com/replicatedhq/kots/pkg/util"
kotsv1beta1 "github.com/replicatedhq/kotskinds/apis/kots/v1beta1"
"github.com/replicatedhq/kotskinds/multitype"
yaml "github.com/replicatedhq/yaml/v3"
"k8s.io/apimachinery/pkg/runtime/serializer/json"
"k8s.io/client-go/kubernetes/scheme"
)
func TemplateConfigObjects(configSpec *kotsv1beta1.Config, configValues map[string]template.ItemValue, license *kotsv1beta1.License, app *kotsv1beta1.Application, localRegistry registrytypes.RegistrySettings, versionInfo *template.VersionInfo, appInfo *template.ApplicationInfo, identityconfig *kotsv1beta1.IdentityConfig, namespace string, decryptValues bool) (*kotsv1beta1.Config, error) {
templatedString, err := templateConfigObjects(configSpec, configValues, license, app, localRegistry, versionInfo, appInfo, identityconfig, namespace, decryptValues, MarshalConfig)
if err != nil {
return nil, errors.Wrap(err, "failed to template config")
}
if len(templatedString) == 0 {
return nil, nil
}
decode := scheme.Codecs.UniversalDeserializer().Decode
obj, gvk, err := decode([]byte(templatedString), nil, nil) // TODO fix decode of boolstrings
if err != nil {
return nil, errors.Wrap(err, "failed to decode config data")
}
if gvk.Group != "kots.io" || gvk.Version != "v1beta1" || gvk.Kind != "Config" {
return nil, errors.Errorf("expected Config, but found %s/%s/%s", gvk.Group, gvk.Version, gvk.Kind)
}
config := obj.(*kotsv1beta1.Config)
return config, nil
}
func templateConfigObjects(configSpec *kotsv1beta1.Config, configValues map[string]template.ItemValue, license *kotsv1beta1.License, app *kotsv1beta1.Application, localRegistry registrytypes.RegistrySettings, versionInfo *template.VersionInfo, appInfo *template.ApplicationInfo, identityconfig *kotsv1beta1.IdentityConfig, namespace string, decryptValues bool, marshalFunc func(config *kotsv1beta1.Config) (string, error)) (string, error) {
if configSpec == nil {
return "", nil
}
builderOptions := template.BuilderOptions{
ConfigGroups: configSpec.Spec.Groups,
ExistingValues: configValues,
LocalRegistry: localRegistry,
License: license,
Application: app,
VersionInfo: versionInfo,
ApplicationInfo: appInfo,
IdentityConfig: identityconfig,
Namespace: namespace,
DecryptValues: decryptValues,
}
builder, configVals, err := template.NewBuilder(builderOptions)
if err != nil {
return "", errors.Wrap(err, "failed to create config context")
}
actualizedConfig := ApplyValuesToConfig(configSpec, configVals)
configDocWithData, err := marshalFunc(actualizedConfig)
if err != nil {
return "", errors.Wrap(err, "failed to marshal config")
}
rendered, err := builder.RenderTemplate("config", string(configDocWithData))
if err != nil {
return "", errors.Wrap(err, "failed to render config template")
}
return rendered, nil
}
func ApplyValuesToConfig(config *kotsv1beta1.Config, values map[string]template.ItemValue) *kotsv1beta1.Config {
if config == nil {
return nil
}
configInstance := config.DeepCopy()
for idxG, g := range configInstance.Spec.Groups {
for idxI, i := range g.Items {
// if the item is repeatable
if i.Repeatable {
if configInstance.Spec.Groups[idxG].Items[idxI].ValuesByGroup == nil {
// initialize the appropriate maps
configInstance.Spec.Groups[idxG].Items[idxI].ValuesByGroup = map[string]kotsv1beta1.GroupValues{}
}
if configInstance.Spec.Groups[idxG].Items[idxI].CountByGroup == nil {
configInstance.Spec.Groups[idxG].Items[idxI].CountByGroup = map[string]int{}
}
if configInstance.Spec.Groups[idxG].Items[idxI].ValuesByGroup[g.Name] == nil {
configInstance.Spec.Groups[idxG].Items[idxI].ValuesByGroup[g.Name] = map[string]string{}
configInstance.Spec.Groups[idxG].Items[idxI].CountByGroup[g.Name] = 0
}
for fieldName, item := range values {
if item.RepeatableItem == i.Name {
configInstance.Spec.Groups[idxG].Items[idxI].ValuesByGroup[g.Name][fieldName] = fmt.Sprintf("%s", item.Value)
}
}
for variadicGroup, groupValues := range configInstance.Spec.Groups[idxG].Items[idxI].ValuesByGroup {
configInstance.Spec.Groups[idxG].Items[idxI].CountByGroup[variadicGroup] = len(groupValues)
}
CreateVariadicValues(&configInstance.Spec.Groups[idxG].Items[idxI], g.Name)
}
value, ok := values[i.Name]
if ok {
configInstance.Spec.Groups[idxG].Items[idxI].Value = multitype.FromString(value.ValueStr())
configInstance.Spec.Groups[idxG].Items[idxI].Default = multitype.FromString(value.DefaultStr())
if value.Filename != "" {
configInstance.Spec.Groups[idxG].Items[idxI].Filename = value.Filename
}
}
for idxC, c := range i.Items {
value, ok := values[c.Name]
if ok {
configInstance.Spec.Groups[idxG].Items[idxI].Items[idxC].Value = multitype.FromString(value.ValueStr())
configInstance.Spec.Groups[idxG].Items[idxI].Items[idxC].Default = multitype.FromString(value.DefaultStr())
if value.Filename != "" {
configInstance.Spec.Groups[idxG].Items[idxI].Filename = value.Filename
}
}
}
}
}
return configInstance
}
// MarshalConfig runs the same code path as the k8s json->yaml serializer, but uses a different yaml library for those parts
// first, the object is marshalled to json
// second, the json is unmarshalled to an object as yaml
// third, the object is marshalled as yaml
func MarshalConfig(config *kotsv1beta1.Config) (string, error) {
s := json.NewSerializerWithOptions(
json.DefaultMetaFactory,
scheme.Scheme,
scheme.Scheme,
json.SerializerOptions{Yaml: false, Pretty: true, Strict: false},
)
var marshalledJSON bytes.Buffer
if err := s.Encode(config, &marshalledJSON); err != nil {
return "", errors.Wrap(err, "failed to marshal config as json")
}
var unmarshalledYAML interface{}
if err := yaml.Unmarshal(marshalledJSON.Bytes(), &unmarshalledYAML); err != nil {
return "", errors.Wrap(err, "failed to unmarshal config as yaml")
}
marshalledYAML, err := util.MarshalIndent(2, unmarshalledYAML)
if err != nil {
return "", errors.Wrap(err, "failed to marshal config as yaml")
}
return string(marshalledYAML), nil
}
func UnmarshalConfigValuesContent(content []byte) (map[string]template.ItemValue, error) {
decode := scheme.Codecs.UniversalDeserializer().Decode
obj, gvk, err := decode(content, nil, nil)
if err != nil {
return nil, errors.Wrap(err, "failed to decode values")
}
if gvk.Group != "kots.io" || gvk.Version != "v1beta1" || gvk.Kind != "ConfigValues" {
return nil, errors.New("not a configvalues object")
}
values := obj.(*kotsv1beta1.ConfigValues)
ctx := map[string]template.ItemValue{}
for k, v := range values.Spec.Values {
ctx[k] = template.ItemValue{
Value: v.Value,
Default: v.Default,
RepeatableItem: v.RepeatableItem,
}
}
return ctx, nil
}
func CreateVariadicValues(item *kotsv1beta1.ConfigItem, groupName string) {
if item.ValuesByGroup == nil {
item.ValuesByGroup = map[string]kotsv1beta1.GroupValues{}
}
if item.CountByGroup == nil {
item.CountByGroup = map[string]int{}
}
if item.MinimumCount != 0 && (item.CountByGroup[groupName] < item.MinimumCount) {
item.CountByGroup[groupName] = item.MinimumCount
} else if item.CountByGroup[groupName] == 0 {
item.CountByGroup[groupName] = 1
}
for len(item.ValuesByGroup[groupName]) < item.CountByGroup[groupName] {
shortUUID := strings.Split(uuid.New().String(), "-")[0]
variadicName := fmt.Sprintf("%s-%s", item.Name, shortUUID)
item.ValuesByGroup[groupName][variadicName] = ""
}
}