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values.go
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values.go
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package apps
import (
"encoding/base64"
"fmt"
"github.com/jenkins-x/jx/pkg/environments"
"io"
"io/ioutil"
"os"
"path/filepath"
"strings"
"gopkg.in/AlecAivazis/survey.v1/terminal"
"github.com/ghodss/yaml"
"github.com/jenkins-x/jx/pkg/log"
"github.com/jenkins-x/jx/pkg/util"
"github.com/jenkins-x/jx/pkg/surveyutils"
"github.com/jenkins-x/jx/pkg/vault"
jenkinsv1 "github.com/jenkins-x/jx/pkg/apis/jenkins.io/v1"
"github.com/jenkins-x/jx/pkg/client/clientset/versioned"
"github.com/pkg/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
)
const (
//ValuesAnnotation is the name of the annotation used to stash values
ValuesAnnotation = "jenkins.io/values.yaml"
appsGeneratedSecretKey = "appsGeneratedSecrets"
)
const secretTemplate = `
{{- range .Values.generatedSecrets }}
apiVersion: v1
data:
{{ .key }}: {{ .value }}
kind: Secret
metadata:
name: {{ .name }}
type: Opaque
{{- end }}
`
// StashValues takes the values used to configure an app and annotates the APP CRD with them allowing them to be used
// at a later date e.g. when the app is upgraded
func StashValues(values []byte, name string, jxClient versioned.Interface, ns string, chartDir string, repository string) error {
// locate the app CRD
create := false
app, err := jxClient.JenkinsV1().Apps(ns).Get(name, metav1.GetOptions{})
if err != nil {
create = true
app = &jenkinsv1.App{
ObjectMeta: metav1.ObjectMeta{
Name: name,
},
Spec: jenkinsv1.AppSpec{},
}
}
// base64 encode the values.yaml
encoded := base64.StdEncoding.EncodeToString(values)
if app.Annotations == nil {
app.Annotations = make(map[string]string)
}
app.Annotations[ValuesAnnotation] = encoded
environments.AddAppMetaData(chartDir, app, repository)
if create {
_, err := jxClient.JenkinsV1().Apps(ns).Create(app)
if err != nil {
return errors.Wrapf(err, "creating App %s to annotate with values.yaml", name)
}
} else {
_, err = jxClient.JenkinsV1().Apps(ns).Update(app)
if err != nil {
return errors.Wrapf(err, "updating App %s to annotate with values.yaml", name)
}
}
return nil
}
// AddSecretsToVault adds the generatedSecrets into the vault using client at basepath
func AddSecretsToVault(generatedSecrets []*surveyutils.GeneratedSecret, client vault.Client,
basepath string) (func(), error) {
if len(generatedSecrets) > 0 {
for _, secret := range generatedSecrets {
path := strings.Join([]string{basepath, secret.Name}, "/")
err := vault.WriteMap(client, path, map[string]interface{}{
secret.Key: secret.Value,
})
if err != nil {
return func() {}, err
}
}
}
return func() {}, nil
}
// AddSecretsToTemplate adds the generatedSecrets into the template (rooted at dir) as Kubernetes Secrets,
// using app as the base of the name
func AddSecretsToTemplate(dir string, app string, generatedSecrets []*surveyutils.GeneratedSecret) (string, func(),
error) {
// We write a secret template into the chart, append the values for the generated generatedSecrets to values.yaml
if len(generatedSecrets) > 0 {
// For each secret, we write a file into the chart
templatesDir := filepath.Join(dir, "templates")
err := os.MkdirAll(templatesDir, 0700)
if err != nil {
return "", func() {}, err
}
fileName := filepath.Join(templatesDir, "app-generated-secret-template.yaml")
err = ioutil.WriteFile(fileName, []byte(secretTemplate), 0755)
if err != nil {
return "", func() {}, err
}
allSecrets := map[string][]*surveyutils.GeneratedSecret{
appsGeneratedSecretKey: generatedSecrets,
}
secretsYaml, err := yaml.Marshal(allSecrets)
if err != nil {
return "", func() {}, err
}
secretsFile, err := ioutil.TempFile("", fmt.Sprintf("%s-generatedSecrets.yaml", app))
cleanup := func() {
err = secretsFile.Close()
if err != nil {
log.Warnf("Error closing %s because %v\n", secretsFile.Name(), err)
}
err = util.DeleteFile(secretsFile.Name())
if err != nil {
log.Warnf("Error deleting %s because %v\n", secretsFile.Name(), err)
}
}
if err != nil {
return "", func() {}, err
}
_, err = secretsFile.Write(secretsYaml)
if err != nil {
return "", func() {}, err
}
return secretsFile.Name(), cleanup, nil
}
return "", func() {}, nil
}
// AddValuesToChart adds a values file to the chart rooted at dir
func AddValuesToChart(dir string, app string, values []byte, verbose bool) (string, func(), error) {
valuesYaml, err := yaml.JSONToYAML(values)
if err != nil {
return "", func() {}, errors.Wrapf(err, "error converting values from json to yaml\n\n%v", values)
}
if verbose {
log.Infof("Generated values.yaml:\n\n%v\n", util.ColorInfo(string(valuesYaml)))
}
valuesFile, err := ioutil.TempFile("", fmt.Sprintf("%s-values.yaml", app))
cleanup := func() {
err = valuesFile.Close()
if err != nil {
log.Warnf("Error closing %s because %v\n", valuesFile.Name(), err)
}
err = util.DeleteFile(valuesFile.Name())
if err != nil {
log.Warnf("Error deleting %s because %v\n", valuesFile.Name(), err)
}
}
if err != nil {
return "", func() {}, errors.Wrapf(err, "creating tempfile to write values for %s", app)
}
_, err = valuesFile.Write(valuesYaml)
if err != nil {
return "", func() {}, errors.Wrapf(err, "writing values to %s for %s", valuesFile.Name(), app)
}
return valuesFile.Name(), cleanup, nil
}
//GenerateQuestions asks questions based on the schema
func GenerateQuestions(schema []byte, batchMode bool, askExisting bool, existing map[string]interface{},
in terminal.FileReader,
out terminal.FileWriter, outErr io.Writer) ([]byte, []*surveyutils.GeneratedSecret, error) {
secrets := make([]*surveyutils.GeneratedSecret, 0)
schemaOptions := surveyutils.JSONSchemaOptions{
CreateSecret: func(name string, key string, value string) (*jenkinsv1.ResourceReference, error) {
secret := &surveyutils.GeneratedSecret{
Name: name,
Key: key,
Value: value,
}
secrets = append(secrets, secret)
return &jenkinsv1.ResourceReference{
Name: name,
Kind: "Secret",
}, nil
},
Out: out,
In: in,
OutErr: outErr,
IgnoreMissingValues: false,
NoAsk: batchMode,
AutoAcceptDefaults: batchMode,
AskExisting: askExisting,
}
// For adding an app there are by defintion no existing values,
// and whether we auto-accept defaults is determined by batch mode
values, err := schemaOptions.GenerateValues(schema, existing)
if err != nil {
return nil, nil, errors.WithStack(err)
}
return values, secrets, nil
}